Blood Vessel Prosthesis
Blood Vessel Prosthesis Implantation
Prostheses and Implants
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
Heart Valve Prosthesis
An artificial replacement for one or more natural teeth or part of a tooth, or associated structures, ranging from a portion of a tooth to a complete denture. The dental prosthesis is used for cosmetic or functional reasons, or both. DENTURES and specific types of dentures are also available. (From Boucher's Clinical Dental Terminology, 4th ed, p244 & Jablonski, Dictionary of Dentistry, 1992, p643)
Dental Prosthesis, Implant-Supported
Heart Valve Prosthesis Implantation
A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.
Dental Prosthesis Design
Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.
Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.
Dental Prosthesis Retention
The joining of objects by means of a cement (e.g., in fracture fixation, such as in hip arthroplasty for joining of the acetabular component to the femoral component). In dentistry, it is used for the process of attaching parts of a tooth or restorative material to a natural tooth or for the attaching of orthodontic bands to teeth by means of an adhesive.
Highly specialized EPITHELIAL CELLS that line the HEART; BLOOD VESSELS; and lymph vessels, forming the ENDOTHELIUM. They are polygonal in shape and joined together by TIGHT JUNCTIONS. The tight junctions allow for variable permeability to specific macromolecules that are transported across the endothelial layer.
Denture, Partial, Fixed
Maxillofacial Prosthesis Implantation
Range of Motion, Articular
Vascular Endothelial Growth Factor A
The original member of the family of endothelial cell growth factors referred to as VASCULAR ENDOTHELIAL GROWTH FACTORS. Vascular endothelial growth factor-A was originally isolated from tumor cells and referred to as "tumor angiogenesis factor" and "vascular permeability factor". Although expressed at high levels in certain tumor-derived cells it is produced by a wide variety of cell types. In addition to stimulating vascular growth and vascular permeability it may play a role in stimulating VASODILATION via NITRIC OXIDE-dependent pathways. Alternative splicing of the mRNA for vascular endothelial growth factor A results in several isoforms of the protein being produced.
Unique slender cells with multiple processes extending along the capillary vessel axis and encircling the vascular wall, also called mural cells. Pericytes are imbedded in the BASEMENT MEMBRANE shared with the ENDOTHELIAL CELLS of the vessel. Pericytes are important in maintaining vessel integrity, angiogenesis, and vascular remodeling.
Aortic Valve Stenosis
Equipment Failure Analysis
Reconstructive Surgical Procedures
Total Disc Replacement
Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
A vinyl polymer made from ethylene. It can be branched or linear. Branched or low-density polyethylene is tough and pliable but not to the same degree as linear polyethylene. Linear or high-density polyethylene has a greater hardness and tensile strength. Polyethylene is used in a variety of products, including implants and prostheses.
Coated Materials, Biocompatible
Denture, Partial, Removable
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Metal-on-Metal Joint Prostheses
Disease Models, Animal
Microscopy, Electron, Scanning
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Aortic Valve Insufficiency
The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement.
Endothelial Growth Factors
These growth factors are soluble mitogens secreted by a variety of organs. The factors are a mixture of two single chain polypeptides which have affinity to heparin. Their molecular weight are organ and species dependent. They have mitogenic and chemotactic effects and can stimulate endothelial cells to grow and synthesize DNA. The factors are related to both the basic and acidic FIBROBLAST GROWTH FACTORS but have different amino acid sequences.
Heart Valve Diseases
Vascular Endothelial Growth Factor Receptor-2
A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans.
Tomography, X-Ray Computed
Vascular Endothelial Growth Factors
A tissue preparation technique that involves the injecting of plastic (acrylates) into blood vessels or other hollow viscera and treating the tissue with a caustic substance. This results in a negative copy or a solid replica of the enclosed space of the tissue that is ready for viewing under a scanning electron microscope.
Dental Implantation, Endosseous
Denture, Complete, Lower
Denture, Complete, Upper
Recovery of Function
An angiopoietin that is closely related to ANGIOPOIETIN-1. It binds to the TIE-2 RECEPTOR without receptor stimulation and antagonizes the effect of ANGIOPOIETIN-1. However its antagonistic effect may be limited to cell receptors that occur within the vasculature. Angiopoietin-2 may therefore play a role in down-regulation of BLOOD VESSEL branching and sprouting.
Blood Flow Velocity
Tongues of skin and subcutaneous tissue, sometimes including muscle, cut away from the underlying parts but often still attached at one end. They retain their own microvasculature which is also transferred to the new site. They are often used in plastic surgery for filling a defect in a neighboring region.
Vascular Endothelial Growth Factor Receptor-3
The external reproductive organ of males. It is composed of a mass of erectile tissue enclosed in three cylindrical fibrous compartments. Two of the three compartments, the corpus cavernosa, are placed side-by-side along the upper part of the organ. The third compartment below, the corpus spongiosum, houses the urethra.
Dental Impression Technique
Procedure of producing an imprint or negative likeness of the teeth and/or edentulous areas. Impressions are made in plastic material which becomes hardened or set while in contact with the tissue. They are later filled with plaster of Paris or artificial stone to produce a facsimile of the oral structures present. Impressions may be made of a full complement of teeth, of areas where some teeth have been removed, or in a mouth from which all teeth have been extracted. (Illustrated Dictionary of Dentistry, 1982)
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
Femoral Neck Fractures
Infrainguinal revascularisation in the era of vein-graft surveillance--do clinical factors influence long-term outcome? (1/2458)OBJECTIVES: To investigate the variables affecting the long-term outcome of infrainguinal vein bypass grafts that have undergone postoperative surveillance. DESIGN: A retrospective analysis. PATIENTS AND METHODS: Details of 299 consecutive infrainguinal vein grafts performed in 275 patients from a single university hospital were collected and analysed. All grafts underwent postoperative duplex surveillance. Factors affecting patency, limb salvage and survival rates were examined. These factors were gender, diabetes, hypertension, aspirin, warfarin, ischaemic heart disease, run-off, graft type, early thrombectomy, level of anastomoses and indication for surgery. RESULTS: The 6-year primary, primary assisted and secondary patency rates were 23, 47, and 57%, respectively. Six-year limb salvage and patient survival were 68 and 45%, respectively. Primary patency was adversely influenced by the use of composite vein grafts. Early thrombectomy was the only factor that significantly influenced secondary patency. Limb salvage was worse in diabetic limbs, limbs with poor run-off and in grafts that required early thrombectomy. Postoperative survival was better in males, claudicants and in patients who took aspirin. CONCLUSIONS: Although co-morbid factors did not influence graft patency rates, diabetes did adversely effect limb salvage. This study, like others before it, confirms that aspirin significantly reduces long-term mortality in patients undergoing infrainguinal revascularisation. (+info)
Isolated femoropopliteal bypass graft for limb salvage after failed tibial reconstruction: a viable alternative to amputation. (2/2458)PURPOSE: Femoropopliteal bypass grafting procedures performed to isolated popliteal arteries after failure of a previous tibial reconstruction were studied. The results were compared with those of a study of primary isolated femoropopliteal bypass grafts (IFPBs). METHODS: IFPBs were only constructed if the uninvolved or patent popliteal segment measured at least 7 cm in length and had at least one major collateral supplying the calf. When IFPB was performed for ischemic lesions, these lesions were usually limited to the digits or small portions of the foot. Forty-seven polytetrafluoroethylene grafts and three autogenous reversed saphenous vein grafts were used. RESULTS: Ankle brachial pressure index (ABI) increased after bypass grafting by a mean of 0.46. Three-year primary life table patency and limb-salvage rates for primary IFPBs were 73% and 86%, respectively. All eight IFPBs performed after failed tibial bypass grafts remained patent for 2 to 44 months, with patients having viable, healed feet. CONCLUSION: In the presence of a suitable popliteal artery and limited tissue necrosis, IFPB can have acceptable patency and limb-salvage rates, even when a polytetrafluoroethylene graft is used. Secondary IFPB can be used to achieve limb salvage after failed tibial bypass grafting. (+info)
Superficial femoral eversion endarterectomy combined with a vein segment as a composite artery-vein bypass graft for infrainguinal arterial reconstruction. (3/2458)OBJECTIVE: The purpose of this study was to determine the results of composite artery-vein bypass grafting for infrainguinal arterial reconstruction. METHODS: This study was designed as a retrospective case series in two tertiary referral centers. Forty-eight of 51 patients underwent the procedure of interest for the treatment of ischemic skin lesions (n = 42), rest pain (n = 3), disabling claudication (n = 1), and infected prosthesis (n = 2). The intervention used was infrainguinal composite artery-vein bypass grafting to popliteal (n = 18) and infrapopliteal (n = 30) arteries, with an occluded segment of the superficial femoral artery prepared with eversion endarterectomy and an autogenous vein conduit harvested from greater saphenous veins (n = 43), arm veins (n = 3), and lesser saphenous veins (n = 2). The main outcome measures, primary graft patency rates, foot salvage rates, and patient survival rates, were described by means of the life-table method for a mean follow-up time of 15.5 months. RESULTS: The cumulative loss during the follow-up period was 6% and 24% at 6 and 12 months, respectively. The primary graft patency rates, the foot salvage rates, and the patient survival rates for patients with popliteal grafts were 60.0% +/- 9.07%, 75.7% +/- 9.18%, and 93.5% +/- 6.03%, respectively, at 1 month; 53.7% +/- 11.85%, 68.9% +/- 12.47%, and 85. 0% +/- 9.92% at 1 year; and 46.7% +/- 18.19%, 68.9% +/- 20.54%, and 53.1% +/- 17.15% at 5 years. For infrapopliteal grafts, the corresponding estimates were 72.4% +/- 7.06%, 72.9% +/- 6.99%, and 92.7% +/- 4.79% at 1 month; 55.6% +/- 10.70%, 55.4% +/- 10.07%, and 77.9% +/- 9.02% at 1 year; and 33.6% +/- 22.36%, 55.4% +/- 30.20%, and 20.8% +/- 9.89% at 5 years. CONCLUSION: The composite artery-vein bypass graft is a useful autogenous alternative for infrainguinal arterial reconstruction when a vein of the required quality is not available or when the procedure needs to be confined to the affected limb. (+info)
The value of late computed tomographic scanning in identification of vascular abnormalities after abdominal aortic aneurysm repair. (4/2458)PURPOSE: The purpose of this study was to determine the prevalence of late arterial abnormalities after aortic aneurysm repair and thus to suggest a routine for postoperative radiologic follow-up examination and to establish reference criteria for endovascular repair. METHODS: Computed tomographic (CT) scan follow-up examination was obtained at 8 to 9 years after abdominal aortic aneurysm (AAA) repair on a cohort of patients enrolled in the Canadian Aneurysm Study. The original registry consisted of 680 patients who underwent repair of nonruptured AAA. When the request for CT scan follow-up examination was sent in 1994, 251 patients were alive and potentially available for CT scan follow-up examination and 94 patients agreed to undergo abdominal and thoracic CT scanning procedures. Each scan was interpreted independently by two vascular radiologists. RESULTS: For analysis, the aorta was divided into five defined segments and an aneurysm was defined as a more than 50% enlargement from the expected normal value as defined in the reporting standards for aneurysms. With this strict definition, 64.9% of patients had aneurysmal dilatation and the abnormality was considered as a possible indication for surgical repair in 13.8%. Of the 39 patients who underwent initial repair with a tube graft, 12 (30.8%) were found to have an iliac aneurysm and six of these aneurysms (15.4%) were of possible surgical significance. Graft dilatation was observed from the time of operation (median graft size of 18 mm) to a median size of 22 mm as measured by means of CT scanning at follow-up examination. Fluid or thrombus was seen around the graft in 28% of the cases, and bowel was believed to be intimately associated with the graft in 7%. CONCLUSION: Late follow-up CT scans after AAA repair often show vascular abnormalities. Most of these abnormalities are not clinically significant, but, in 13.8% of patients, the thoracic or abdominal aortic segment was aneurysmal and, in 15.4% of patients who underwent tube graft placement, one of the iliac arteries was significantly abnormal to warrant consideration for surgical repair. On the basis of these findings, a routine CT follow-up examination after 5 years is recommended. This study provides a population-based study for comparison with the results of endovascular repair. (+info)
Right atrial bypass grafting for central venous obstruction associated with dialysis access: another treatment option. (5/2458)PURPOSE: Central venous obstruction is a common problem in patients with chronic renal failure who undergo maintenance hemodialysis. We studied the use of right atrial bypass grafting in nine cases of central venous obstruction associated with upper extremity venous hypertension. To better understand the options for managing this condition, we discuss the roles of surgery and percutaneous transluminal angioplasty with stent placement. METHODS: All patients had previously undergone placement of bilateral temporary subclavian vein dialysis catheters. Severe arm swelling, graft thrombosis, or graft malfunction developed because of central venous stenosis or obstruction in the absence of alternative access sites. A large-diameter (10 to 16 mm) externally reinforced polytetrafluoroethylene (GoreTex) graft was used to bypass the obstructed vein and was anastomosed to the right atrial appendage. This technique was used to bypass six lesions in the subclavian vein, two lesions at the innominate vein/superior vena caval junction, and one lesion in the distal axillary vein. RESULTS: All patients except one had significant resolution of symptoms without operative mortality. Bypass grafts remained patent, allowing the arteriovenous grafts to provide functional access for 1.5 to 52 months (mean, 15.4 months) after surgery. CONCLUSION: Because no mortality directly resulted from the procedure and the morbidity rate was acceptable, this bypass grafting technique was adequate in maintaining the dialysis access needed by these patients. Because of the magnitude of the procedure, we recommend it only for the occasional patient in whom all other access sites are exhausted and in whom percutaneous dilation and/or stenting has failed. (+info)
Infrarenal endoluminal bifurcated stent graft infected with Listeria monocytogenes. (6/2458)Prosthetic graft infection as a result of Listeria monocytogenes is an extremely rare event that recently occurred in a 77-year-old man who underwent endoluminal stent grafting for infrarenal abdominal aortic aneurysm. The infected aortic endoluminal prosthesis was removed by means of en bloc resection of the aneurysm and contained endograft with in situ aortoiliac reconstruction. At the 10-month follow-up examination, the patient was well and had no signs of infection. (+info)
Endovascular stent graft repair of aortopulmonary fistula. (7/2458)Two patients who had aortopulmonary fistula of postoperative origin with hemoptysis underwent successful repair by means of an endovascular stent graft procedure. One patient had undergone repeated thoracotomies two times, and the other one time to repair anastomotic aneurysms of the descending aorta after surgery for Takayasu's arteritis. A self-expanding stainless steel stent covered with a Dacron graft was inserted into the lesion through the external iliac or femoral artery. The patients recovered well, with no signs of infection or recurrent hemoptysis 8 months after the procedure. Endovascular stent grafting may be a therapeutic option for treating patients with aortopulmonary fistula. (+info)
Frame dislocation of body middle rings in endovascular stent tube grafts. (8/2458)OBJECTIVES: To understand the cause, and propose a mechanism for frame dislocation in endovascular grafts. MATERIALS AND METHODS: Five tube grafts were explanted due to secondary distal leakage 15-21 months after operation. One bifurcated graft was removed during emergency operation after aortic rupture caused by secondary leakage. A second bifurcated graft was harvested from a patient with thrombotic occlusion of one limb, who died after transurethral prostatic resection. The inside of the grafts were examined endoscopically. The stent was inspected after removal of the fabric, broken ligatures were counted and examined by scanning electron microscopy. The fabric strength was tested by probe puncture. RESULTS: We found 17-44% of the stent ligatures of the body middle rings to be loose. The knots were intact. Degradation of the polyester textile was not observed. CONCLUSIONS: Continuous movements in the grafted aorta and blood pressure impose permanent stress to the stent frame and the polyester fabric resulting in morphological changes in the body middle ring of grafts. The clinical implications of the suture breakages are unknown although they may be related to distal secondary leakage in tube grafts. (+info)
Patent US20020026232 - Endovascular prosthesis - Google Patents
A novel endovascular approach useful in the treatment of aneurysms, particularly saccular aneurysms. The present endovascular prosthesis comprises a leaf portion capable of being urged against and blocking the opening of the aneurysm thereby leading to obliteration of the aneurysm. The leaf portion is attached to, and independently moveable with respect to, a body comprising at least one expandable portion. Thus, the body serves the general purpose of fixing the endovascular prosthesis in place at a target body passageway in the vicinity at which the aneurysm is located and the leaf portion serves the purpose of blocking the aneurysmal opening thereby leading to obliteration of the aneurysm. A method of delivering and implanting the endovascular prosthesis is also described.
Endurant Stent Graft System Post Approval Study - Full Text View - ClinicalTrials.gov
The purpose of the study is to demonstrate the long term safety and effectiveness of the Endurant Stent Graft System for the endovascular treatment of infrarenal abdominal aortic aneurysms in a post-approval environment, through the endpoints established in this protocol.. The clinical objective of the study is to evaluate the long term safety and effectiveness of the Endurant Stent Graft System assessed at 5 years through freedom from Aneurysm-Related Mortality (ARM). ...
Endovascular Exclusion of Ascending and Thoracic Aortic Pathology - Full Text View - ClinicalTrials.gov
This study is a prospective, non-randomized evaluation of ascending and thoracic pathology endovascular repair in the high-risk patient. The purpose of this study is to assess the role of the thoracic aortic pathology treatment using endovascular prosthesis in high-risk patients. The study objectives include (1) to assess the safety and efficacy of endovascular prosthesis as a means of preventing aneurysm growth and rupture in high risk patients, (2) to measure the physiologic effects and outcomes of endovascular aneurysm repair, (3) to establish selection criteria, improve device design, operative technique, and follow-up procedures for patients undergoing aneurysm repair. There will be up to 15 patients in the ascending aortic lesion arm and 20 patients in Arch Branch arm; all at one site (The Cleveland Clinic). Baseline procedures may include an angiogram, intravascular ultrasound, CT scan, chest x-ray, physical exam, blood work, and ankle-brachial index. The endovascular prosthesis is placed ...
Global Vascular Prostheses Market 2019 With Strategic Trends Growth, Demand & Future Potential Of Industry - PharmiWeb.com
Global Vascular Prostheses Market 2019 report supplies excellent tools to estimate the latest Vascular Prostheses market place position. The study shows the Vascular Prostheses research and modalities plan chased to emphasize that the report perspectives. This record evaluated the lively entire global Vascular Prost...
Phenomenex HPLC Part: SecurityGuard™ PREP cartridge for Prep HPLC CN columns with 30.0 to 49.0mm internal diameters (ID), Ea ...
HPLC Part: AJ0-8311 SecurityGuard™ PREP cartridge for Prep HPLC CN columns with 30.0 to 49.0mm internal diameters (ID), Ea Recomended Use: Column protection for standard HPLC columns Separation Mode: Normal Phase Format: Guard Cartridge (e.g. PHE SecurityGuard )
Duplex Evaluation of Aneurysm/Pseudo-aneurysms and Evaluation of Arterial Bypass Grafts
This ultrasound training video is designed to provide an introduction to the color/duplex ultrasound evaluation of aneurysms, pseudo-aneurysms and ultrasound evaluation of arterial bypass grafts.
Talent™ Thoracic Stent Graft System | Medgadget
Medtronic, Inc. has just submitted the final pre-market approval documents to the FDA for its Talent™ Thoracic Stent Graft System. At the present tim
Thoracic stent graft system of Medtronic approved in Japan
Medtronic Valiant Navion thoracic stent graft system was approved in Japan. It consists of a low-profile delivery system with FreeFlo.
DNA-PK Cell Signaling
Background: Vascular prosthetic graft infection is a severe complication after open aortic aneurysm repair. Reports of infected endografts are scarce. General treatment consensus with infected graft material is that it should be removed completely. The objective of this study was to describe the incidence of endograft infection after endovascular repair of abdominal (EVAR) selleck products and thoracic aortic aneurysm (TEVAR) and to report treatment options and their outcome.. Methods: A retrospective cohort study was performed of patients endovascularly operated for abdominal and thoracic aortic aneurysm in two large hospitals (one tertiary referral center and one large community hospital) between March 1996 and June 2009. Diagnosis of infected endograft was made based on clinical findings, blood tests and cultures, imaging studies (computed tomography, fludeoxyglucose positron emission tomography), and intraoperative findings at reoperation.. Results: Eleven patients with an infected ...
NEN-EN-ISO 25539-1:2008 en - NEN
This part of ISO 25539 specifies requirements for endovascular prostheses, based upon current medical knowledge. With regard to safety, it gives requirements for intended performance, design attributes, materials, design evaluation, manufacturing, sterilization packaging and information supplied by the manufacturer. It should be considered as a supplement to ISO 14630, which specifies general requirements for the performance of non-active surgical implants. This part of ISO 25539 is applicable to endovascular prostheses used to treat arterial aneurysms, arterial stenoses, or other appropriate vascular abnormalities. This part of ISO 25539 is applicable to delivery systems if they comprise an integral component of the deployment of the endovascular prostheses. This part of ISO 25539 is not applicable to vascular occluders, with the exception of contra-lateral iliac occluders when used as an integral part of an aorto-uni-iliac device. See ISO 14630 for excluded products. This part of ISO 25539 is ...
US Patent for Method and apparatus for forming vascular prostheses Patent (Patent # 5,865,723 issued February 2, 1999) -...
A vascular prosthesis comprises pericardial, fascial, or other tissue formed over a tubular support frame. A first exemplary tubular support frame comprises an inner helical member and an outer helical member, where the tissue is rolled and captured therebetween. A second exemplary tubular support frame comprises a plurality of ring elements which are located alternately on the outside and on the inside of the rolled tissue. Other exemplary frames employ fasteners for penetrating the rolled tissue and attaching tissue to frame elements. The tissue is preferably obtained from the patient who is to receive the vascular prosthesis, with the tissue being mounted over the frame immediately prior to use.
Patent US20010053930 - Endovascular graft system - Google Patents
The invention provides an endovascular graft system for repair of aneurysms. The graft system includes a trunk component and first and second leg components. The graft components include graft material supported by a plurality of stents which are spaced apart and affixed to the graft material in a manner that allows articulation of the graft system without excessive wear of the graft material. The stents are formed by intersecting struts which may be tapered to relieve stress. A stabilizing mechanism is provided to stabilize the position of the legs with respect to the trunk when the graft system is deployed.
Patente US6872198 - Double-y-shaped multi-lumen catheter with selectively attachable hubs - Google Patentes
A multi-lumen catheter and method for inserting same in a patient is disclosed. The catheter includes an elongated, central, multi-lumen tube portion having a proximal end and a distal end. The central tube portion has a substantially cylindrical outer shape and is internally segmented into a plurality of lumens. A distal branch portion includes a plurality of single-lumen distal extension tubes. A proximal branch portion includes a plurality of single-lumen proximal extension tubes. Each proximal extension tube has a distal first end and a proximal second end. The distal first end of each proximal extension tube is connected to the proximal end of the central tube portion such that the single lumen of each distal extension tube is in fluid communication with one of the plurality of lumens of the central tube portion. Each lumen of the central tube portion and the lumens of the distal and proximal extension tubes in fluid communication therewith define a flow path through the catheter. Selectively
Global Stent Grafts Market 2017:2022- Medtronic, Endologix, Gore and Cook Medical | Perfect Analyst
Clause 1, describes the global Stent Grafts market introduction, market overview, product image, market opportunities, market summary, market risk, development scope, global Stent Grafts market presence;. Clause 2 and 3 studies the key Stent Grafts market competitors, their sales volume, market profits and price of Stent Grafts in 2016 and 2017;. Clause 4,5 and 6, introduces the global Stent Grafts market by regions, with sales, market revenue, and share of Stent Grafts market for each region from 2017 to 2022;. Clause 7, conducts the region-wise study of the global Stent Grafts market based on the sales ratio in each region and market share from 2012 to 2017;. Clause 8 displays the market by type and application, with sales global Stent Grafts market share and growth rate by application, type, from 2012 to 2017;. Clause 9 and 10 describes the global Stent Grafts market prediction, by regions, application, and type with global Stent Grafts market revenue and sales, from 2017 to 2022.. Clause 11, ...
Yale study sheds light on formation of tissue-engineered vascular grafts to repair heart defect
The Yale surgeons expanded on an earlier study and human trial conducted in Japan on the use of TEVG as conduits in patients with single ventricles.
Patente US6077296 - Endoluminal vascular prosthesis - Google Patentes
Disclosed is a tubular endoluminal vascular prosthesis, useful in treating, for example, an abdominal aortic aneurysm. The prosthesis comprises a self expandable wire support structure surrounded by a flexible tubular membrane. A delivery catheter and methods are also disclosed.
Long-term performance of Gore® EXCLUDER® AAA Endoprosthesis: a single centers experience - Italian Journal of Vascular and...
RESULTS: A total of 144 patients (122 men and 2 women) underwent EVAR with the Gore® Excluder® AAA Endoprosthesis between December 2004 and December 2012. The mean follow-up time was 13.8 months, and the longest recorded follow-up was 67.6 months. There was no migration nor type I or type III endoleaks during the follow-up period. Seven (5.8%) of the 121 patients required reintervention to treat a type II endoleak. Limb thrombosis was present in 1 (0.8%) patient. No patient was identified with aneurysmal rupture postimplant. Also, no patient presented with aneurysm diameter growth of more than 5 mm at any point during follow-up ...
US7674284B2 - Endoluminal graft - Google Patents
An endoluminal graft includes a unitary tube of graft material forming two adjacent legs that are integral and monolithic to each other. The graft can be part of a prosthesis assembly for treatment of branched vascular systems and can function as an integral bifurcated leg extension prosthesis in combination with a main bifurcated prosthesis. In treating abdominal aortic aneurysms, the graft can be deployed within both iliac arteries.
Phenomenex HPLC Part: SecurityGuard™ ULTRA cartridges for PFP UHPLC, sub-2µm and core-shell columns with 4.6mm internal...
HPLC Part: AJ0-8773 SecurityGuard™ ULTRA cartridges for PFP UHPLC, sub-2µm and core-shell columns with 4.6mm internal diameters (ID), 3/Pk Recomended Use: Column protection for UHPLC columns Separation Mode: Reversed Phase Format: Guard Cartridge (e.g. PHE SecurityGuard )
First Surgery in Orange County Using Next Generation Fenestrated Endovascular Graft is Performed at
LAGUNA HILLS, Calif., Feb. 19, 2013 /PRNewswire-USNewswire/ -- First Surgery in Orange County Using Next Generation Fenestrated Endovascular Graft is...
US Patent # 4,319,363. Vascular prostheses - Patents.com
Vascular prosthesis suitable for use as a surgical graft is produced by implanting a rod or tube in a living host animal such as a sheep and allowing collagenous tissue to grow on the implant to form
US4787900A - Process for forming multilayer bioreplaceable blood vessel prosthesis - Google Patents
Process for forming a multilayer blood vessel prosthesis. Each layer is formed from bioreplaceable materials which include those produced by contacting collagen with an aminopolysaccharide and subsequently covalently crosslinking the resulting polymer, polymers of hydroxyacetic acid and the like. Cross flow filtration molding and wet extrusion molding are two processes which are particularly useful for forming the inner layer of the blood vessel prosthesis. The outer layer of the blood vessel prosthesis is preferably formed by freeze drying a dispersion of the bioreplaceable material onto the inner layer(s). The disclosed blood vessel prosthesis is a multilayer structure with each layer having a porosity and other physicochemical and mechanical characteristics selected to maximize the effectiveness of the blood vessel. The prosthesis functions initially as a thromboresistant conduit with mechanical properties which match those of the adjacent natural blood vessel. Eventually, the prosthesis
Elucidation of the ipso-Substitution Mechanism for Side-Chain Cleavage of α-Quaternary 4-Nonylphenols and 4-t-Butoxyphenol in...
Analytical procedures.Metabolites were analyzed with a GC 8060 gas chromatograph (Fisons Instruments, Milan, Italy) coupled to an MD 800 single-quadrupole MS (Fisons Instruments, Manchester, United Kingdom). Interface and source temperatures were set at 250 and 200°C, respectively. Substances were ionized with electron impact (EI; 70 eV, if not otherwise specified) and data acquired in the full-scan mode. For the analysis of nonanols, 2 μl of an appropriately diluted CH2Cl2 extract of the culture was introduced into a splitless injector heated to 270°C. The separation of the analytes was achieved on a 60-m DB-17 MS capillary column (2 by 30 m, 0.25-mm internal diameter, 0.25-μm film thickness; J&W Scientific, Folsom, CA), linked to a 2-m guard and a 2-m transfer column (0.32-mm and 0.18-mm internal diameters, respectively; deactivated with OV-1701-OH; BGB Analytic Ag, Böckten, Switzerland). Helium was used as the carrier gas at a constant flow of 1.2 ml/min. The following temperature ...
Vascular graft financial definition of vascular graft
Definition of vascular graft in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is vascular graft? Meaning of vascular graft as a finance term. What does vascular graft mean in finance?
Collagen and Elastin based Tissue Engineered Vascular Grafts by Alan J. Ryan
Cardiovascular disease is the leading cause of death worldwide, accounting for 29% of all global deaths and is set to rise to 23 million deaths a year by 2030 (World Health Organisation, 2012). Arterial bypassing, both peripheral and coronary, is usually performed with autologously harvested vessels. However, the quantity available is often very limited as well as the vessels of elderly patients often suffering from thrombus, aneurysm formation or arthrosclerosis in high pressure arterial sites. The shortcomings of autografts has led to a substantial amount of research being directed towards tissue engineered vascular grafts (TEVGs) (Kakisis et al., 2005). Currently available artificial grafts for small diameter vasculature (mm) suffer from poor patency rates due to thrombosis, aneurysm formation, and a compliance mismatch, which often stems from the inherent properties of synthetic polymers. The primary goal of the research presented in this thesis was to develop a small diameter tissue engineered
GORE® EXCLUDER®適形性AAA人工血管支架獲得CE標誌 | Business Wire
(美國商業資訊) -- W. L. Gore & Associates, Inc. (Gore)今天宣佈，GORE® EXCLUDER®適形性AAA器材獲得CE標誌，該產品旨在治療具有挑戰性解剖畸形的腹主動脈瘤(AAA)病患。Gore用於主動脈疾病血管內治療的創新解決方案陣容不斷擴大，該器材
Title page for ETD etd-04022007-132345
The failure of synthetic vascular grafts due to de-endothelialization of the lumen as a result of exposure to fluid-induced shear stress prevents the widespread use of such grafts as small-diameter vessel replacements. Physical surface modification, an approach that seeks to alter the topography of the luminal surface, has been investigated as a method of reducing de-endothelialization under physiological stresses. Based on prior experimental evidence supporting this approach, computation fluid dynamics was used to investigate the impact of selected channel geometry parameters (wall angle, channel width, depth, and radius of curvature) on fluid flow and the resulting wall shear stress. Optimization of these parameters was performed in order to determine if micro-topographical modification of the lumen wall could alter fluid flow in a manner such that favorable conditions for both endothelial cell retention and stimulation are produced. It was found that a 50% decrease in the wall angle, width, ...
Coating Durability Tester for Coated and Drug-Eluting Devices | Dynatek Labs
July 2005. Dynatek dalta announces their release of the worlds first Coating Durability Tester (CDT), with the first client installation scheduled for August 1, 2005.. Dynateks CDT adds the benefit of dynamic, real-time evaluation of device coating to the proven accelerated durability testing of the Small Vascular Prosthesis Tester (SVP) and Large Vascular Prosthesis Tester (LVP). The CDT measures both size and number of particles as shedding occurs, without removal of the testing solution.. Applications for the CDT include device and coating durability testing for large vascular stents, small vascular stents, bifurcated stents, and other coated devices. The Coated Durability Tester includes a particle counter, controller, and data acquisition software.. Dynatek, the industry leader in cardiac and vascular device testing, offers customized testers and testing services designed to meet their clients specific needs. Visit us at www.dynateklabs.com. For more information on the CDT, contact Sales ...
STATdx - Thoracic Aortic Endografts
Developed by renowned radiologists in each specialty, STATdx provides comprehensive decision support you can rely on - Thoracic Aortic Endografts
Patent US20070162109 - Intraluminal stent graft - Google Patents
A modular intraluminal stent graft. The intraluminal stent graft is bifurcated having a primary section and a secondary section extending therefrom. The primary section tapers from a larger diameter at an upstream end to a smaller diameter at a downstream end. The downstream end of the primary section has a pair of independent openings each having an expanded diameter. The secondary section provides a first endoleg having an upstream end that is received through the expanded diameter of one opening of the primary section, and a second endoleg having an upstream end that is received through the second opening of the primary section. The upstream ends of each endoleg, in its expanded state, is larger than the downstream portion of the respective endolegs and expands within the primary section to help assemble the graft in situ. The first and second endolegs also expand within the respective openings each is received within to assemble the stent graft in situ as well. The primary section is positioned
Agar - JECFA specification | CyberColloids
Threshold gel concentration: Prepare serial dilutions of the sample with known solids content (0.15%, 0.20%, 0.25%, etc.) and place in tubes, 150 mm long by 16 mm internal diameter, stoppered at both ends. Cool for 1 h at 20-25o. Allow cylinders of gel to slide from the tubes to a level surface. The lowest concentration of gel that resists gravity without rupture for 5-30 sec is the threshold concentration of the sample. ...
Gore Medical | Vascular grafts, endovascular, interventional, and surgical devices
We make vascular grafts, endovascular and interventional devices, and surgical patches and scaffolds used by healthcare professionals to improve the lives of patients worldwide.
Gore Medical | Vascular grafts, endovascular, interventional, and surgical devices
We make vascular grafts, endovascular and interventional devices, and surgical patches and scaffolds used by healthcare professionals to improve the lives of patients worldwide.
Gore Receives CE Mark for GORE® Hybrid Vascular Graft | Business Wire
Gore has received CE Mark for the GORE® Hybrid Vascular Graft. The graft is designed to expand treatment options for optimal outflow by maximizing the
United States Peripheral Vascular Graft Market Report 2017 : ReportsnReports
[97 Pages Report] Check for Discount on United States Peripheral Vascular Graft Market Report 2017 report by QYResearch Group. In this report, the United States Peripheral Vascular Graft market...
Nonporous silicone polymer coating of expanded polytetrafluoroethylene grafts reduces graft neointimal hyperplasia in dog and...
TY - JOUR. T1 - Nonporous silicone polymer coating of expanded polytetrafluoroethylene grafts reduces graft neointimal hyperplasia in dog and baboon models. AU - Lumsden, A. B.. AU - Chen, C.. AU - Coyle, K. A.. AU - Ofenloch, J. C.. AU - Wang, J. H.. AU - Yasuda, H. K.. AU - Hanson, S. R.. PY - 1996. Y1 - 1996. N2 - Purpose: Neointimal hyperplasia frequently develops after placement of prosthetic vascular grafts and is a major cause of graft failure. This study was an attempt to prevent vascular lesion formation by coating the graft luminal surface with a thin layer of nonporous silicone polymer, and subsequently with an ultrathin layer of vapor phase (plasma gas)-deposited fluoropolymer, thereby providing a smooth and chemically uniform surface that was postulated to limit pannus tissue ingrowth across the graft anastomoses. Methods: Bilateral femoral arteriovenous (AV) conduits were constructed in four dogs using expanded polytetrafluoroethylene graft materials (ePTFE; 6- mm inside diameter, ...
Acutely sodded expanded polytetrafluoroethylene grafts produce only prostacyclin: A qualitative difference from saphenous veins...
TY - JOUR. T1 - Acutely sodded expanded polytetrafluoroethylene grafts produce only prostacyclin. T2 - A qualitative difference from saphenous veins. AU - Desai, S. B.. AU - Cable, D. G.. AU - Phillips, M. R.. AU - Schaff, H. V.. PY - 2000. Y1 - 2000. N2 - Select subsets of patients require prosthetic graft material for revascularization. Although arterial prosthetic grafts of large caliber perform acceptably, grafts of ,6 mm exhibit a high attrition rate. Microvessel endothelial sodding, a method resulting in the lining of prosthetic grafts with autologous endothelium, improves graft patency however, aggressive antiplatelet therapy is still required, because terminating an antiplatelet regimen accelerates graft attrition. The present investigation was designed to address the acute production of vasoactive substances in microvessel endothelial cell sodded expanded polytetrafluoroethylene (ePTFE) grafts in an attempt to delineate a possible mechanism behind the continued requirement for ...
Expanded polytetrafluoroethylene graft fistula for chronic hemodialysis<...
TY - JOUR. T1 - Expanded polytetrafluoroethylene graft fistula for chronic hemodialysis. AU - Tellis, V. A.. AU - Kohlberg, W. I.. AU - Bhat, D. J.. AU - Driscoll, B.. AU - Veith, F. J.. PY - 1979. Y1 - 1979. N2 - In a retrospective study of 66 polytetrafluoroethylene arteriovenous fistulae (PTFE) and 71 bovine carotid heterograft arteriovenous fistulae (BCH) for dialysis access, PTFE had a higher patency rate than BCH at 12 months (62.4 versus 32.5%). PTFE was easier to work with and easier to handle in the face of infection. The lateral upper arm approach to placement of the PTFE graft is desirable in patients who have had multiple previous access procedures because this area is usually free from scarring, is distant from neurovascular structures, and provides a greater length of graft for needle punctures.. AB - In a retrospective study of 66 polytetrafluoroethylene arteriovenous fistulae (PTFE) and 71 bovine carotid heterograft arteriovenous fistulae (BCH) for dialysis access, PTFE had a ...
Abstract 14158: Impact of Statin Following Endovascular Aneurysm Repair in Patients With Abdominal Aortic Aneurysm | Circulation
Introduction: Endovascular aneurysm repair (EVAR) has been an established treatment for abdominal aortic aneurysm (AAA). Although statin use has been shown associated with better long-term survival following open AAA surgery, its impact on EVAR has not been systematically explored.. Methods: We retrospectively analyzed a multicenter database of 368 consecutive patients (age, 76 ± 8 years; 84% male) undergoing EVAR for AAA between November 2006 and December 2013. The outcome measure was overall survival following EVAR. Independent predictor associated with the outcome was assessed by Cox proportional hazard regression model. Furthermore, the association between the statin use and the outcome was assessed.. Results: During the follow-up of 30 ± 20 months, 38 patients died from cardiovascular disease (33%), cancer (23%) or infection (23%). Survival rate was 96% and 81% at 1 and 5 years, respectively. In Cox regression analysis, statin use (in 213 AAA patients, 58%) was negatively associated with ...
Magnetic Forces Enable Rapid Endothelialization of Synthetic Vascular Grafts | Circulation
This is the first article to our knowledge to report the use of biophysical forces to attach endothelial cells to the surface of prosthetic vascular grafts. EOCs readily endocytose paramagnetic particles and are rapidly attracted to magnetized graft surfaces. Once seeded, these cells remain attached at shear forces comparable to those seen in the circulation. A porcine study provided proof of concept and demonstrated the presence of a large number of seeded cells after 24 hours of pulsatile blood flow.. Vascular grafts based on either expanded polytetrafluoroethylene or polyethylene terephthalate fiber (Dacron) work very well when positioned in vessels with diameters ,6 mm and in conditions of high flow. However, the majority of vascular disease occurs in vessels with caliber of ,6 mm. Coronary bypass grafting is commonly performed with arterial conduits (when available), and with autologous saphenous vein grafts. However, up to 30% of the patients do not have veins suitable for vascular ...
Worldwide Polytetrafluoroethylene (PTFE) market is estimated to reach 3.4 Billion USD in 2017 - The Edition Time
As per Market.Biz analysis, by the end of 2017, Global sales revenue of Polytetrafluoroethylene (PTFE) Market is expected to touch nearly 3.4 Billion USD, as well as global Polytetrafluoroethylene (PTFE) market, is expected to cross US$ XXXX Mn by the end of the year 2022. The global Polytetrafluoroethylene (PTFE) market is expected to exhibit a CAGR of XX.XX % during the assessment period from 2016-2022.. Global Polytetrafluoroethylene (PTFE) Market 2017 Research refine essential aspects of the Polytetrafluoroethylene (PTFE) market and presents them in the form of a united and all-inclusive document. Polytetrafluoroethylene (PTFE) market report focuses on the top leading manufacturers of Polytetrafluoroethylene (PTFE) industry. Firstly, the Polytetrafluoroethylene (PTFE) market report gives you the basic overview of the Polytetrafluoroethylene (PTFE) industry 2017. Secondly, this Polytetrafluoroethylene (PTFE) market study gives the information about the types of products, price, ...
Endovascular Today - FDA Issues Letter to Providers on Type III Endoleaks Associated With EVAR Graft Systems
September 28, 2017-The US Food and Drug Administration (FDA) has issued a letter to health care providers advising that the agency is evaluating recent information regarding type IIIa and IIIb endoleaks with the use of endovascular graft systems indicated for endovascular aneurysm repair (EVAR) procedures. The letter, addressed to vascular and cardiothoracic surgeons, radiologists, and cardiologists, stated that an increase in the occurrence of type III endoleaks has been suggested by several sources, including the FDAs Medical Device Reporting system and the Annual Clinical Updates to Physicians by the manufacturers. This increase is compared with earlier clinical update reports in patients with various device models and implant duration lengths, including some patients who had previously stable repairs.. The purpose of the FDAs letter is to bring this potential complication to the attention of health care providers and to remind and encourage them to report type IIIa and IIIb endoleak events ...
Bridging stent grafts in fenestrated and branched endovascular aortic repair: current practice and possible complications - The...
Fenestrated and branched endovascular aortic repair (F/B-EVAR) is associated with a high degree of technical and clinical success. Despite this, studies have also reported high reintervention rates, and these are often related to the bridging stent grafts. Often new devices appear on the market before they have been tested in the bridging stent graft position. This review aims to assess the current literature on bridging stent grafts and discuss complications, illustrated by case reports. Complications reported with bridging stent grafts include; endoleak, kink, fracture, migration, occlusion, stenosis and perforation. Some known risk factors for bridging stent occlusions are renal artery stent grafts vs. SMA and celiac artery stent grafts. Some device specific complications have also been reported such as type IIIc endoleak with the Lifestream stent graft (Bard Peripheral Vascular, Tempe, AZ, USA) fractures and type IIId endoleaks with the 1st generation of Begraft (BentleyInnoMed, Hechingen, ...
Pesquisa | Portal Regional da BVS
PURPOSE: To report 5-year results of the prospective, multicenter study designed to evaluate the Zenith Fenestrated AAA Endovascular Graft (William A. Cook Australia, Brisbane, Australia) for juxtarenal abdominal aortic aneurysms (AAAs). METHODS: Sixty-seven patients (54 male, mean age 74 ± 8 years) were prospectively enrolled at 14 U.S. centers from 2005 to 2012. Fenestrated stent grafts were used in patients with infrarenal aortic neck lengths of 4 to 14 mm to target 178 renal-mesenteric arteries with a mean of 2.7 vessels per patient. At 5 years, 42 of the 67 patients completed the final study follow-up, with clinical examination obtained in 41 and computed tomography imaging in 39. Outcomes adjudicated by a clinical events committee included all-cause and aneurysm-related mortality, major adverse events, renal stent occlusion/stenosis, renal function changes and renal infarcts, aneurysm sac enlargement (>5 mm), device migration (≥10 mm), type I/III endoleak, and secondary interventions. ...
Medtronic Receives FDA Breakthrough Device Designation for Developing Stent Graft System to Treat Thoracoabdominal Aortic...
Medtronic Receives FDA Breakthrough Device Designation for Developing Stent Graft System to Treat Thoracoabdominal Aortic Aneurysm - - Minneapolis (Minnesota)
Sustained Thromboresistant Bioactivity with Reduced Intimal Hyperplasia of Heparin-Bonded PTFE Propaten Graft in a Chronic...
Background: Bypass graft thrombosis remains a significant mode of failure in prosthetic graft revascularization. The purpose of this investigation was to evaluate the long-term thromboresistant effect of heparin-bonded expanded polytetrafluoroethylene (ePTFE) graft using Carmeda BioActive Surface technology in a canine model. Methods: Bilateral femorofemoral artery bypass grafts with ePTFE grafts were performed in 25 adult grayhound dogs. In each animal, a heparin-bonded ePTFE graft (Propaten, WL Gore) was placed on one side, whereas a control nonheparin graft was placed on the contralateral side. The graft patency was assessed at 1, 6, 12, 18, and 24 months (n = 5 per group) following the bypass. Heparin bioactivity of the graft material was analyzed. The effect of intimal hyperplasia was also assessed. Results: All bypass grafts were patent at 1 month. Significantly greater patency rates were noted in the Propaten group compared to the control group at 12, 18, and 24 months, which were 84%, ...
Experimentelle und klinische Untersuchungen über den Gebrauch von Allograft-Material zur in situ-Behandlung von Infektionen im...
Infections of the aorta remain one of the most dreaded complications in reconstructive vascular surgery. The purposes of this study were to evaluate the efficacy of a cryopreserved aortic allograft to treat an established vascular graft infection by the surgical in situ replacement of the infected segment in an animal model, and to investigate the role of antibiotics to decontaminate the allograft during the cryopreservation process. Furthermore, the tissue concentrations of the antibiotic and the kinetics of desorption were investigated in in vitro experiments. A model of prosthetic graft infection by Staphylococcus epidermidis RP-62 (inserted in the infrarenal aorta) in dogs was developed. By in situ replacement of the infected prosthetic graft with a cryopreserved aortic allograft, this study demonstrated an intrinsic resistance to infection of cryopreserved aortic allografts. However, antibiotic loading of the cryopreserved aortic allografts appeared to be essential to obtain optimal ...
Apparatus and method for implantation of a bifurcated endovascular prosthesis - Patent application
17. A method for assembling a bifurcated stent graft which is releasable from a collapsed state and releasably engaged to the distal end of a first catheter, for implantation into a blood vessel, comprising the steps of:providing first component having a first end and second end, and having a first aperture at said first end, and having an axial passage communicating therethrough;providing said first component with a first leg extending from said second end and having an axial cavity communicating therethrough with said axial passage,providing first component with a second leg extending from said second end, with second leg extending to a distal end and having an axial passageway therethrough between said axial passage and said distal end;employing means for engagement of said first component to engage it at a distal end of a first catheter;providing a second catheter having a distal end tranlatably positionable relative to said distal end of said first catheter;positioning a second guide wire ...
Endurant II AAA Stent-Graft | MEDcraze
The Endurant II AAA stent graft (Medtronic) is a stent-graft composed with highly elastic nitinol stents with a high-density polyester fiber. Nitinol is an alloy of titanium and nickel and has been shown to have several advantages which include greater resistance to crushing forces as well as lower bending stress when placed within tortuous vessels (which is sometimes the case with aortic aneurysms).. Nitinol is also safe with use of magnetic resonance imaging (MRI). The Endurant stent graft system is often employed in challenging endovascular repairs (e.g. close proximity of the aneurysm to the renal arteries or tortuous aorta). Even while including results from difficult repairs, studies have shown that success and complication rates are comparable to other stent grafts. ...
Long-term Results Following Surgical Management of Aortic Graft Infection | JAMA Surgery | JAMA Network
• Between January 1970 and June 1988, a total of 45 patients with aortic prosthetic graft infection underwent removal of the infected aortic prosthesis. In addi
Characterization of a 2.5 mm internal diameter T-junction and study of the effects of capillary contractions in two-phase flows
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder ...
Results from multiple prospective single-center clinical trials of the off-the-shelf p-Branch fenestrated stent graft | Lund...
Objective: The purpose of this study was to report prospective data of an off-the-shelf fenestrated endograft (Zenith p-Branch; Cook Medical, Bloomington, Ind) from four centers for the treatment of patients with pararenal abdominal aortic aneurysms. Methods: Data were combined from four single-center investigational studies conducted in the United States and Europe. The p-Branch endograft consists of a proximal off-the-shelf component incorporating a scallop for the celiac artery, a superior mesenteric artery fenestration, and two conical pivot fenestrations to preserve flow to the renal vessels. The device is available in two configurations, a left renal fenestration at the same (configuration A) or lower (configuration B) longitudinal position than the right to accommodate varied anatomy of the patients. Results: Between August 2011 and September 2015, 76 patients (82% male; mean age, 72 years; 65 elective and 11 emergent) were enrolled, with 55% implanted with option A and 45% with B. The ...
Abdominal Aortic Stent Grafts - Medical Devices Pipeline Assessment, 2017 : ReportsnReports
[145 Pages Report] Check for Discount on Abdominal Aortic Stent Grafts - Medical Devices Pipeline Assessment, 2017 report by GlobalData. Abdominal Aortic Stent Grafts - Medical Devices Pipeline Assessment, 2017 Summary...
Clinical Trial detail - CheckOrphan
The purpose of this study is to compare acute technical outcomes of the Talent AAA Stent Graft system versus Cook Zenith Endograft at two high volume institutions, Albany Medical Center and St. Peters Hospital in Albany, NY. The investigators are comparing the two devices as part of the evolution of endovascular repair (EVAR) for AAAs. The Zenith AAA Endovascular Graft received FDA approval on May 23, 2003, the Talent Abdominal Stent Graft System on April 15, 2008 ...
Anaconda™ Endovascular Aortic Stent Grafts | Terumo Aortic
Anaconda™ endovascular abdominal aortic stent grafts offer you a fully customisable solution for precise abdominal aneurysm/AAA repair.
Patent CA2365274A1 - Expanded polytetrafluoroethylene vascular graft with coating - Google Patents
A vascular graft comprised of a tubular polytetrafluoroethylene (ePTFE) sheet is provided. The ePTFE sheet has a substantially uniform coating of bioresorbable gel material, for example gelatin, on a surface thereof. The coating minimises bleeding through suture holes in the ePTFE sheet and provides an increase in longitudinal extensibility.
A multilayered electrospun graft as vascular access for hemodialysis. | Physicians Weekly for Medical News, Journals & Articles
Despite medical achievements, the number of patients with end-stage kidney disease keeps steadily raising, thereby entailing a high number of surgical and interventional procedures to establish and maintain arteriovenous vascular access for hemodialysis. Due to vascular disease, aneurysms or infection, the preferred access-an autogenous arteriovenous fistula-is not always available and appropriate. Moreover, when replacing small diameter blood vessels, synthetic vascular grafts possess well-known disadvantages. A continuous multilayered gradient electrospinning was used to produce vascular grafts made of collagen type I nanofibers on luminal and adventitial graft side, and poly-ɛ-caprolactone as medial layer. Therefore, a custom-made electrospinner with robust environmental control was developed. The morphology of electrospun grafts was characterized by scanning electron microscopy and measurement of mechanical properties. Human microvascular endothelial cells were cultured in the graft under ...
Denatured venous homograft as an arterial substitute in civilian vascular injuries. Thirty months experience.
OBJECTIVES: Autologous saphenous vein (ASV) for arterial reconstruction, in vascular limb injuries is the graft material of choice. Denatured saphenous vein homograft (DSVH), thanks to its characteristics of readily available autologous biological pr
Global Aortic Stent Grafts Trends, Growth and Forecast upto By Acute Market Reports
Summary Aortic stent grafts are most commonly used to reinforce a weak spot in an artery, which is known as an aneurysm. The stent grafts are designed to
Gore gains EU approval for vascular graft - Hospital Pharmacy Europe
The Gore Hybrid Vascular Graft, which received FDA clearance in 2010, is indicated for use as a vascular prosthesis for replacement or bypass of diseased vessels impacted by aortic aneurysmal, peripheral vascular and end-stage renal disease, according to the Flagstaff, Ariz.-based company. The device is designed to address the causes of graft failure; intimal hyperplasia, thrombosis and seroma ...
Patent US5437900 - Surface modified porous expanded polytetrafluoroethylene and process for making - Google Patents
Porous expanded polytetrafluoroethylene material having a microstructure of nodes interconnected by fibrils wherein a surface of the material has been modified to have increased hydrophobicity as indicated by having a water droplet roll-off angle of less than about 10 degrees in comparison to a typical roll-off angle of greater than about 12 degrees for the unmodified material. Under magnification, the surface morphology may be indistinguishable from that of the unmodified precursor material. The modification is preferably done by exposing the surface to radio frequency gas plasma discharge with a reactive etching gas for a lengthy amount of time such as about ten minutes. If surface etching is continued beyond a time adequate to produce the highly hydrophobic behavior, then the surface morphology includes the appearance of broken fibrils. Still further treatment results in complete removal of fibrils from the surface so that under magnification the surface has the appearance of freestanding node
ASTM D4895 - 16 Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion
D4895 - 16 Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion , coagulated dispersion polytetrafluoroethylene, fluoropolymers, polytetrafluoroethylene, PTFE,,
The Cryosurgical Maze Procedure | CTSNet
The treatment of thoracic aortic TSXN with endografts presents several technical challenges. The most important is the lack of a dedicated device for these patients. All commercially available aortic endografts, especially those for use in the thoracic aorta, were designed for treatment of aneurysms and dissections. These pathologies usually occur in older individuals with intrinsic arterial disease and larger diameter aortas. The smallest commercially available thoracic aortic endograft, the Gore TAG device (W.L. Gore & Associates, Flagstaff, AZ) is 26 mm diameter, and is not recommended for use in aortas less than 23 mm in diameter . One concern with excessive endograft oversizing is in-folding of the graft material that prevents an adequate seal against the aortic intima. Of greater concern, graft collapse has been reported when this device is used in aortas smaller than 23 mm diameter to treat an aortic TSXN [2,6]. The mechanism of graft collapse is unclear but this complication has also ...
Dittmar Bӧckler - Vascular News
Can you please tell us also about the most challenging aortic aneurysm case you managed to treat with a total endovascular solution?. A young 34-year-old mother of two children comes to mind. She had open surgery for coarctation of the abdominal aorta at the age of 18. She developed proximal and distal anastomotic aneurysms of Dacron graft from the proximal descending to the infrarenal aorta involving a reimplanted single left kidney. We performed embolisation of the residual descending aortic lumen to avoid endoleak, implanted a tapered thoracic stent graft percutaneously and, four weeks later, staged a custom-made device for the abdominal segment preserving the renal artery using fusion navigation in very short landing zones. Avoiding re-thoracotomy and laparotomy, working percutaneously and discharging this young patient after three days is so persuasive that endo, even out of instructions for use and without knowing long-term results, is a huge benefit for many patients, both elderly and ...
Benzamides | Profiles RNS
Duncan DR, Chen PY, Patterson JT, Lee YU, Hibino N, Cleary M, Naito Y, Yi T, Gilliland T, Kurobe H, Church SN, Shinoka T, Fahmy TM, Simons M, Breuer CK. TGFßR1 inhibition blocks the formation of stenosis in tissue-engineered vascular grafts. J Am Coll Cardiol. 2015 Feb 10; 65(5):512-4 ...
Brevet US5755772 - Radially expansible vascular prosthesis having reversible and other locking ... - Google Brevets
A tubular prosthesis is implanted at a target location within a body lumen by transluminally positioning the prosthesis and thereafter radially expanding the prosthesis to conform to an inner wall of the lumen. The prosthesis typically includes a braided tubular body and is typically provided with an everting or other structure for locking the prosthesis in its radially expanded configuration.
SULA-08]A. Sulaiman, Boussel, L., Taconnet, F., Serfaty, J. M., Alsaid, H., Attia, C., Huet, L., et Douek, P., « In vitro non-rigid life-size model of aortic arch aneurysm for endovascular prosthesis assessment. », European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, vol. 33, nᵒ 1, p. 53-7, 2008. ...
Endovascular Today - The INCRAFT® AAA Stent Graft System: Clinical Results and Experience (October 2015)
Prof. Giovanni Pratesi outlines the effectiveness of a new-generation device in expanding EVAR applicability using clinical evidence from trials and real-world experience.
KAKEN - Research Projects | Development of a small diameter vascular prosthesis with capacity of collateral formation to...
Principal Investigator：ENDO Masahiro, Project Period (FY)：1995 - 1996, Research Category：Grant-in-Aid for Scientific Research (B), Section：一般, Research Field：Thoracic surgery
WO1992009311 BIOCOMPATIBLE SYNTHETIC DOUBLE-WALL VASCULAR PROSTHESIS CONTAINING HORMONE-SECRETING CELLS
This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results.
Applications of high performance liquid chromatography to compounds of pharmaceutical interest - Development of semi...
Semi-preparative high performance liquid chromatography facilities have been developed, capable of separating up to 100mg of material per injection. Stirred slurry column packing techniques were studied in detail. The effects of packing pressure, slurrying solvent, slurry concentration and the duration of the packing process were examined. The optimised packing technique was successfully used to pack columns of 12.5 to 50cm length and 4.9 to 10.9mm internal diameter. Analytical columns (4.9mm I.D.) were packed to evaluate twenty-two commercially available packing materials on a cost-performance basis. Semi-preparative columns (8.1 or 10.9mm I.D.) were packed with materials which gave either high efficiency or showed high performance to cost benefit. The performance of these columns compares favourably with the best results reported in the literature. The sample injection technique was studied using dye mixtures. Experimental results showed that the valve injection technique implemented the full ...
shunt from blood vessel to blood vessel. systemic circulation to pulmonary artery shunt Blalock-Taussig shunt. SVC to the right ... Many other types of prostheses are used.. *creation of a stoma, a permanent or semi-permanent opening in the body ... Blood or blood expanders may be administered to compensate for blood lost during surgery. Once the procedure is complete, ... shunt from heart chamber to blood vessel. atrium to pulmonary artery Fontan procedure. left ventricle to aorta Rastelli ...
Blood vessels may be clamped or cauterized to prevent bleeding, and retractors may be used to expose the site or keep the ... Many other types of prostheses are used. creation of a stoma, a permanent or semi-permanent opening in the body in transplant ... or diseased tissue Blood or blood expanders may be administered to compensate for blood lost during surgery. Once the procedure ... ligation - tying off blood vessels, ducts, or "tubes". grafts - may be severed pieces of tissue cut from the same (or different ...
... trachea and esophagus or vessels), resulting in intraoperative blood loss, apoplexy, postoperative paresis or tetraparesis or ... The main goal of using of a prosthesis is to obtain physiological motion between the two affected vertebral bodies. However, in ... The ventral slot is commonly performed by splitting the ventral soft tissues of the neck, pushing the great vessels laterally ... Implanted material can consists of "a cervical disc prosthesis", a fixed spacer out of metal (titanium) or synthetic material ...
Because blood clots do not easily form on it, it is often advisable to line a blood-contacting prosthesis with this material in ... Blood vessel stents, by contrast, are often lined with a polymer that has heparin as a pendant group, relying on drug action to ... Radial head prosthesis. It is also used in automotive industries where a desired amount of friction is required between two ... and in biomedical prostheses. Pyrolytic carbon samples usually have a single cleavage plane, similar to mica, because the ...
Free flap breast reconstruction
... it is perfused by different blood vessels. The superficial epigastric vessels branch off the common femoral vessels in the ... without the emplacement of a breast implant prosthesis. As a type of plastic surgery, the free-flap procedure for breast ... The vessels are routinely anastomosed to the internal mammary vessels, instead of to the thoraco-dorsal vessels in the axilla, ... and one or more perforator vessels of the deep inferior epigastric blood-vessel system. During the harvesting of the DIEAP flap ...
... for eye surgery Bone cement Artificial ligaments and tendons Dental implants for tooth fixation Blood vessel prostheses Heart ... The mechanics involve two semicircular discs moving back and forth, with both allowing the flow of blood as well as the ability ... Modern medical devices and prostheses are often made of more than one material, so it might not always be sufficient to talk ... blood, central nervous system, etc.). In addition to a material being certified as biocompatible, biomaterials must be ...
The vascularization, the entrance of the blood vessels to the muscle tissues, occurs at the anterior (front) face of the muscle ... Therefore, to create an implant-pocket, either for a gluteal prosthesis or for lipoinjection, a low-angle muscle-dissection is ... As the arteries and the veins enter the mass of the gluteal muscle, they divide into narrower blood-vessel ramifications ( ... of the gluteus maximus muscle by carefully separating the muscle fibres to avoid severing the pertinent blood vessels, which ...
List of MeSH codes (E07)
... blood vessel prosthesis MeSH E07.695.120 - bone nails MeSH E07.695.125 - bone plates MeSH E07.695.130 - bone screws MeSH ... joint prosthesis MeSH E07.695.400.400 - hip prosthesis MeSH E07.695.400.410 - knee prosthesis MeSH E07.695.450 - larynx, ... ossicular prosthesis MeSH E07.695.610 - penile prosthesis MeSH E07.695.750 - stents MeSH E07.695.800 - tissue expanders MeSH ... dental prosthesis MeSH E07.695.190.175 - dental abutments MeSH E07.695.190.180 - dental clasps MeSH E07.695.190.185 - dental ...
Until this invention, the available replacement blood vessels were stiff, woven, and not sufficiently porous. The Golaski graft ... was an American Mechanical-Bio-Medical Engineer best known for developing Dense Knit Dacron Vascular Prostheses, which were the ... first practical artificial blood vessel replacements. Golaski died near Philadelphia in 1996 at the age of 83. Golaski was born ...
List of MeSH codes (E04)
... blood vessel prosthesis implantation MeSH E04.100.814.300 - cerebral revascularization MeSH E04.100.814.445 - embolectomy MeSH ... blood vessel prosthesis implantation MeSH E04.650.210 - breast implantation MeSH E04.650.220 - cochlear implantation MeSH ... maxillofacial prosthesis implantation MeSH E04.545.510.500 - mandibular prosthesis implantation MeSH E04.545.550 - oral ... maxillofacial prosthesis implantation MeSH E04.650.510.500 - mandibular prosthesis implantation MeSH E04.650.600 - ossicular ...
Currently, scientists are limited in their ability to grow and print hearts due to difficulties in getting blood vessels and ... Prostheses can roughly be categorized as upper- and lower-extremity and can take many shapes and sizes. New advances in ... thus preventing dangerous constriction of the blood vessels. Allan Doctor, MD, stated that the artificial RBC can be used by ... Artificial red blood cells (RBC) have already been in projects for about 60 years, but they started getting interest when the ...
... and blood vessels of the eyelid has occurred. More severe injuries require reconstruction, however, this usually results in ... The ear can also be reconstructed with cartilage and skin grafts or an external ear prosthesis can be made by an ...
Stent-electrode recording array
Insertion via the blood vessel avoids direct penetration and damage of the brain tissue. As for blood clotting concerns, Oxley ... The device may ultimately be used to control powered exoskeletons, robotic prosthesis, computers or other devices. The device ... brains to keep blood vessels open. Once in place it expands to press the electrodes against the vessel wall close to the brain ... The Stentrode device is implanted via the jugular vein into a blood vessel near the cortical tissue near the motor cortex and ...
Significant blood loss is observed as new blood vessels formed in scar tissues are damaged by incision. Any soft tissues at the ... Small holes may be drilled on the bone graft or the prosthesis to prevent the accumulation of fluid under the repaired defect. ... This may be explained by its larger scalp wound area, a higher volume of blood loss, and the higher complexity and duration of ... The surgery restores regular cerebrospinal fluid (CSF) and cerebral blood flow dynamics, along with normal intracranial ...
... from the globe Rotate and elevate the globe Open Tenon's capsule to visualize optic nerve Cauterize necessary blood vessels ... An ocular prosthesis does not provide vision; this would be a visual prosthesis. Someone with an ocular prosthesis is ... A few ocular prostheses today are made of cryolite glass. A variant of the ocular prosthesis is a very thin hard shell known as ... An ocular prosthesis, artificial eye or glass eye is a type of craniofacial prosthesis that replaces an absent natural eye ...
... is contraindicated in situations whereby vital structures such as nerve bundle, blood vessel and/or vital tooth ... The goal for alveoloplasty is to achieve optimal tissue support for the planned prosthesis, while preserving as much bone and ... This pre-prosthetic surgery which may include bone grafting prepares the mouth to receive a prosthesis or implants by improving ... stability and retention for prosthesis such as denture and even dental implants as the forces acting from the prostheses will ...
With pore sizes exceeding 75 micrometers, fibroblasts, blood vessels, and collagen fibers are permitted through as part of ... This stiffens the prosthesis and results in a more pronounced inflammatory response, which complicates integration into the ... Further, the type of mesh, with a vast choice of available prostheses today, could be distinguished based on the material and ... If an infection settles on a mesh, administration of antibiotics is commonly ineffective, due to the blood-mesh barrier, and ...
2012 in science
The invention could be used to clean up oil spills or even guide medicines through human blood vessels. (BBC) (Soft Matter) 2.8 ... The invention paves the way for advancements in prostheses, personal assistive robots and consumer product testing. (Science ... The sugar structure simulates a human vascular system, allowing artificial blood vessels to be grown to support the liver. (BBC ... "MS damage washed away by stream of young blood". New Scientist. 2012-01-11. Retrieved 2020-10-23. Ruckh, Julia M.; Zhao, Jing- ...
Damage to blood vessels. Infection, either Superficial or Deep Dislocation Dislocation Persistent pain; Loss of range of motion ... The prosthesis may need to be replaced due to complications such as infection or prosthetic fracture. Replacement may be done ... Cross match of blood is routine also, as a high percentage of people receive a blood transfusion. Pre-operative planning ... Alternatively, an initial surgery may be performed to remove previous prosthetic material, and the new prosthesis is then ...
John McFall (athlete)
The motorcycle then fell on him, resulting in the chain severing major blood vessels in his leg. He was flown to a hospital in ... His customized running prosthesis worth £3,000 was in the boot. Following his appeal for the return of the prosthesis, he ... He also started running in the summer of 2003 as soon as he had his prosthesis fitted: "I love that sound of air rushing past ... With his sprinting prosthesis, McFall began training with an ex-Paralympian. In early 2005 former Welsh international athlete ...
Velpeau hernia: a hernia in the groin in front of the femoral blood vessels The benefits of the use of an external device to ... Muscle reinforcement techniques often involve synthetic materials (a mesh prosthesis). The mesh is placed either over the ... Surgical complications include pain that lasts more than three months, surgical site infections, nerve and blood vessel ... The main concern is strangulation, where the blood supply to part of the bowel is blocked. This usually produces severe pain ...
In humans and other mammals, a leg includes the bones, muscles, tendons, ligaments, blood vessels, nerves, and skin. In insects ... A prosthetic leg, a prosthesis, is an artificial leg that is used to replace one that has been lost. "Studies in the Mechanics ...
Adhesive which allows mussels to stick to rocks, piers and boat hulls inspired bioadhesive gel for blood vessels. Through the ... Alvaro Rios Poveda, a researcher in bionics in Latin America, developed an upper limb and hand prosthesis with sensory feedback ... "Mussel glue inspires bioadhesive gel for blood vessels". RobAid. Archived from the original on 20 August 2014. John J. Videler ... Bionic implants differ from mere prostheses by mimicking the original function very closely, or even surpassing it. Bionics' ...
Medication-related osteonecrosis of the jaw
It reduces the blood supply to the tumour by inhibiting new blood vessel formation in the tumor. The tumour may stop growing or ... Patients with removable prostheses should be examined for areas of mucosal irritation. Procedures which are likely to cause ... These cancer-fighting agents tend to hinder the growth of blood vessels that supply the tumour, rather than killing tumour ... Angiogenesis inhibitors interfere with blood vessel formation by interfering with the angiogenesis signalling cascade. They are ...
This occurs when there is damage to the blood vessel and a clot begins to form. The formation of the fibrin strands in the ... The force from the blood flow over the high pressure gradient from the prosthesis leads to fragmentation of red cells, and ... The red blood cells get trapped in the fibrin strands and the sheer force of the blood flow causes the red blood cell to break ... Blood. 35: 104-111. doi:10.1182/blood.V184.108.40.206. PMID 5412670. Lesesve, J; Martin, M; Banasiak, C; Andre-Kerneis, E; Bardet ...
List of surgical procedures
angio- : related to blood vessel. *arthr- : related to a joint. *bi- : two ... plasty : to modify or reshape (sometimes entails replacement with a prosthesis). *-rrhaphy : to strengthen, usually with suture ...
... blood vessel constriction, and other effects that result in increased blood volume. It also results in an increase in diastolic ... prostheses and tightens the mitral valve ring to reduce or eliminate regurgitation. Cardiomyopathy, or disease of the heart ... Excess vitamin A can cause dehydration, joint pain and can also harm the blood vessels, while too much vitamin D can cause ... This causes increased pressure in the pulmonary blood vessels and pulmonary edema (a build-up of fluid in the lungs). Decreased ...
Functional magnetic resonance imaging
This is from both a higher rate of blood flow and an expansion of blood vessels. The blood-flow change is localized to within 2 ... bite bars may also discomfort those with dental prostheses. ... in that brain area's blood vessels. This changes the magnetic ... This, in turn, releases nitric oxide at the contact point of astrocytes and intermediate-sized blood vessels, the arterioles. ... The vascular arterial system supplying fresh blood branches into smaller and smaller vessels as it enters the brain surface and ...
... the attenuation of blood vessels in the retina. Non-syndromic RP usually presents a variety of the following symptoms:[citation ... A visual prosthesis may be an option in certain people with severe disease. It is estimated to affect 1 in 4,000 people. The ... The Argus retinal prosthesis became the first approved treatment for the disease in February 2011, and is currently available ... and therefore markedly reduced expression of all Kell red blood cell antigens. For transfusion purposes these patients are ...
Healthcare in Cuba
Cuba cannot use its own merchant fleet for transporting these goods, but has to make use of vessels from third countries, ... In 2007, Cuba announced that it has undertaken computerizing and creating national networks in blood banks, nephrology and ... "Patients pay for drugs, hearing, dental, and orthopedic prostheses, wheelchairs, crutches, and similar items but prices are low ...
... however it also houses blood vessels and nerves within loose connective tissue. Mechanical loads that are placed on the ... Tooth and Prosthesis Related Factors. Peri-Implant Diseases and Conditions:. Peri-Implant Health. Peri-Implant Mucositis. Peri- ... Smoking decreases the healing abilities of the oral tissues by destroying blood vessels and supply and preventing essential ... Therefore, red blood cells have a pivotal role in maintaining the health of the periodontium, meaning haematological disorders ...
The optic nerve carries the ganglion cell axons to the brain, and the blood vessels that supply the retina. The ganglion cells ... Australian Vision Prosthesis Group, Graduate School of Biomedical Engineering, University of New South Wales ... This area, termed the fovea centralis, is avascular (does not have blood vessels), and has minimal neural tissue in front of ... This organ is extremely rich in blood vessels and is thought to supply nutrition and oxygen to the bird retina by diffusion ...
... the progressive osteolysis is always associated with an angiomatosis of blood and sometimes of lymphatic vessels, which ... Surgical resection Radiation therapy Sclerotherapy Percutaneous bone cement Bone graft Prosthesis Surgical stabilization ... Chyle is rich in protein and white blood cells that are important in fighting infection. The loss of chyle into the chest can ... There is no mention of lymphatic vessels. Though several reports of similar cases were published in the interim, more than 80 ...
To the front left lie the large blood vessels the aortic arch and its branches the left common carotid artery and the ... "Evaluation and Treatment for Tracheoesophageal Puncture and Prosthesis: Technical Report". American Speech-Language-Hearing ... to supply blood to the trachea. The lymphatic vessels of the trachea drain into the pretracheal nodes that lie in front of ... The blood vessels of the thyroid rest on the trachea next to the isthmus; superior thyroid arteries join just above it, and the ...
Intersex medical interventions
Potential surgical problems include maintaining the blood supply. If vessels cannot be stretched into the scrotum, or are ... Testicular prostheses are saline-filled plastic ovoids implanted in the scrotum. They have no function except to provide the ... with blood vessels, from an abdominal or inguinal position to the scrotum. If the inguinal canal is open it must be closed to ... Prostheses made of silastic are no longer available due to safety and perception-of-safety concerns. Potential surgical ...
A steam engine uses heat to boil water contained in a pressure vessel; the expanding steam drives a piston or a turbine. This ...
The venous vessels parallel the arteries. The lymphatic ducts that drain the nipple are the same for the breast. The ... Nipple discharge other than breast milk, including blood. *Any change in the size or the shape of the breast or nipple ... Nipple prosthesis for breast cancer survivors. *Nipple piercing. *Supernumerary (third) nipple. *Udder ...
The principal arterial blood-vessel supply to the nose is two-fold: (i) branches from the internal carotid artery, the branch ... For augmenting the nasal dorsum, autologous cartilage and bone grafts are preferred to (artificial) nose prostheses, because of ... The panda eyes (orbital discoloration) is consequent to trauma and ocular blood vessel disruption. ... and by a confluence of blood vessels from the angular artery and from the supraorbital artery in the medial canthus, (the ...
অক্ষিপট - উইকিপিডিয়া
The blood vessels in a normal human retina. Veins are darker and slightly wider than corresponding arteries. The optic disc is ... Australian Vision Prosthesis Group, Graduate School of Biomedical Engineering, University of New South Wales ...
the repair of a cystocele using a graft or prosthesis ... Blood vessels. *Angiogenesis *Intussusception. *Vasculogenesis ...
The incision is effected to avoid undercutting the skin pedicle and so preserve the nipple-areola complex blood-supply vessels ... Mastopexy by internal surgical approach applies to the woman who has undergone explantation of breast prostheses. In operative ... Blood supply and innervationEdit. The arterial blood supply of the breast has medial and lateral vascular components; it is ... Drainage of venous blood from the breast is by the superficial vein system under the dermis, and by the deep vein system ...
... the vessels are tunnelled beneath the skin surface to the new site) or it may be cut off and new blood supply may be connected. ... Ideally, a prosthesis is made around the time of the mastectomy and it can be used just weeks after the surgery.[citation ... A nipple prosthesis can be used to restore the appearance of the reconstructed breast. Impressions can be made and photographs ... It can be moved into the breast defect while still attached to its blood supply under the arm pit (axilla). A latissimus flap ...
Johnson & Johnson
... blood clot) in combination with low levels of blood platelets (thrombocytopenia) and affected six women between the ages of 18 ... All hip prostheses fail in some patients, but it is expected that the rate will be about 1% a year. Pathologically, the ... vessels, vehicles, buildings or other structures, or upon the ground," i.e., uses which could be confused with its military ... "CDC and FDA recommend US pause use of Johnson & Johnson's Covid-19 vaccine over blood clot concerns". CNN. Retrieved April 13, ...
A.) Blood vessels; B.) Head of epididymis; C.) Efferent ductules; D.) Seminiferous tubules; E.) Parietal lamina of tunica ... Testicular prostheses are available to mimic the appearance and feel of one or both testicles, when absent as from injury or as ... Blood supply and lymphatic drainage. Blood supply and lymphatic drainage of the testes and scrotum are distinct:. *The paired ... The blood-testis barrier. Large molecules cannot pass from the blood into the lumen of a seminiferous tubule due to the ...
The first pathological change in the small blood vessels is narrowing of the blood vessels. As the disease progresses, neuronal ... and now wear a prosthesis. ... Blood vessel opening agents (e.g., ACE inhibitors, α1- ... Blood vessels depend on normal nerve function, and nerves depend on adequate blood flow. ... The autonomic nervous system is composed of nerves serving the heart, lungs, blood vessels, bone, adipose tissue, sweat glands ...
Tear of meniscus
The menisci are nourished by small blood vessels but have a large area in the center with no direct blood supply (avascular). ... "Biostable Prosthesis of a Meniscus , © 2018 Orthopaedic Research Laboratory Nijmegen , Radboud University Medical Center". ... Without the essential nutrients supplied by blood vessels, healing cannot take place. ... A meniscal repair has a higher success rate if there is an adequate blood supply to the peripheral rim. The interior of the ...
Adhesive which allows mussels to stick to rocks, piers and boat hulls inspired bioadhesive gel for blood vessels. ... Bionic implants differ from mere prostheses by mimicking the original function very closely, or even surpassing it. ... Mussel glue inspires bioadhesive gel for blood vessels , RobAid. RobAid.com. Retrieved on 2012-12-13. ...
shunt from blood vessel to blood vessel. systemic circulation to pulmonary artery shunt Blalock-Taussig shunt. SVC to the right ... shunt from heart chamber to blood vessel. atrium to pulmonary artery Fontan procedure. left ventricle to aorta Rastelli ... Cardiac vessels. CHD. Angioplasty. Bypass/Coronary artery bypass MIDCAB. Off-pump CAB. TECAB. Coronary stent. Bare-metal stent ... for transposition of great vessels Arterial switch operation. Mustard procedure. Senning procedure. for univentricular defect ...
... blood vessels and other cellular entities. Together, these items constitute the dental pulp. Endodontic therapy involves the ... "Differences in masticatory function in patients with endodontically treated teeth and single-implant-supported prostheses: a ... With the removal of nerves and blood supply from the tooth, it is best that the tooth be restored with a crown to seal the root ... Blood normally contains 2 mg formaldehyde per liter and the body regulates this in seconds. The rest of an overfill will be ...
... discharge other than breast milk, including blood.. *Any change in the size or the shape of the breast or nipple. ... The venous vessels parallel the arteries.. Stimulation. Main article: Nipple stimulation ... Nipple prosthesis for breast cancer survivors. *Nipple piercing. *Supernumerary (third) nipple. *Udder ...
List of emerging technologies
"Artificial blood vessels created on a 3D printer". BBC News. 16 September 2011. Retrieved 26 December 2011.. ... Body implants, prosthesis Trials, from animal (e.g., brain implants) to human clinical (e.g., insulin pump implant), to ...
... the abnormal buildup of blood vessels, will possibly develop around the facial area at birth and the eyes may be set widely ... Prosthesis is a synthetic alternative for missing limbs, teeth, and various other body parts. Advances in prosthetic limbs have ... Inability to clot blood efficiently due to a low amount of platelets running through the blood ... Occurrence in an individual results in various abnormalities to the face, limbs, ears, nose, vessels and many other ...
... induced coagulation is similar to the coagulation process done within the body to prevent blood loss from damaged blood vessels ... ocular prosthesis, and injectable filler. Other organs and systems. Other types of organ dysfunction can occur ... The inflow of blood causes the tissue to become swollen and may cause cell death. The excess blood, or edema, can activate pain ... Late infections are caused by dormant blood-borne bacteria attached to the implant prior to implantation. The blood-borne ...
blood vessel prosthesis implantation
blood vessel prosthesis*stents*prosthesis design*reoperation*aortic rupture*vascular patency*aortic diseases*risk assessment*x ... blood vessel prosthesis implantation. Summary. Summary: Surgical insertion of synthetic or biological material to repair ... Vascular smooth muscle enhances functionality of tissue-engineered blood vessels in vivo. Lucas P Neff. Wake Forest Institute ... Vascular smooth muscle enhances functionality of tissue-engineered blood vessels in vivo. Lucas P Neff. Wake Forest Institute ...
US4787900A - Process for forming multilayer bioreplaceable blood vessel prosthesis - Google Patents
The outer layer of the blood vessel prosthesis is preferably formed by freeze drying a dispersion of the bioreplaceable ... The disclosed blood vessel prosthesis is a multilayer structure with each layer having a porosity and other physicochemical and ... extrusion molding are two processes which are particularly useful for forming the inner layer of the blood vessel prosthesis. ... mechanical characteristics selected to maximize the effectiveness of the blood vessel. The prosthesis functions initially as a ...
Filters Implantable Into Blood Vessels, Prostheses, Orthopaedic, Nursing or Contraceptive Devices, Fomentation, Treatment or...
Filters Implantable Into Blood Vessels, Prostheses, Orthopaedic, Nursing or Contraceptive Devices, Fomentation, Treatment or...
Patent US6790226 - Endoluminal prosthesis with support wire - Google Patents
An endoluminal prosthesis for implantation within a body lumen to maintain luminal patency, including a support structure and a ... Blood vessel prosthesis. US4482516. Sep 10, 1982. Nov 13, 1984. W. L. Gore & Associates, Inc.. Process for producing a high ... Graft stent and method of repairing blood vessels. US5084065. Jul 10, 1989. Jan 28, 1992. Corvita Corporation. Reinforced graft ... Vascular prosthesis, manufacturing method of the same, and substrate for vascular prosthesis. ...
BVP - blood vessel prosthesis in Medical by AcronymsAndSlang.com
The Medical Acronym /Abbreviation/Slang BVP means blood vessel prosthesis. by AcronymAndSlang.com ... BVP stands for "blood vessel prosthesis". Q: A: How to abbreviate "blood vessel prosthesis"?. "blood vessel prosthesis" can be ... "blood vessel prosthesis". Q: A: What is shorthand of blood vessel prosthesis?. The most common shorthand of "blood vessel ... blood vessel prosthesis can be abbreviated as BVP. BVP - blood vessel prosthesis in Medical by AcronymsAndSlang.com. Image ...
Patent US5728150 - Expandable microporous prosthesis - Google Patents
... when the prosthesis is in the implanted diameter within a vessel. The throughholes are configured to facilitate neointimal cell ... Preferably, the prosthesis is self expandable under the radially outwardly directed spring bias of the rolled sheet. The ... The prosthesis may be used as a graft or a stent. ... to minimize roll bias in the prosthesis as it is expanded from ... perforations in the sheet are configured to provide throughholes in the wall of the multilayer prosthesis, ...
Class 623: PROSTHESIS (I.E., ARTIFICIAL BODY MEMBERS), PARTS THEREOF, OR AIDS AND ACCESSORIES THEREFOR ( Manual of U.S. Patent...
ARTERIAL PROSTHESIS (I.E., BLOOD VESSEL). 1.11. . Stent combined with surgical delivery system (e.g., surgical tools, delivery ... Having enclosed rotary member for directly impelling blood flow. 3.14. . . Blood flow along electromagnetic section of stator ... With means to attach graft to natural blood vessel (e.g., hooks, etc.). ... CORPOREAL ARTIFICIAL HEART, HEART ASSIST (E.G., IMPLANTABLE BLOOD PUMP, ETC.), CONTROL REGULATOR, OR POWER SUPPLY THEREFOR, OR ...
Patente US7404819 - Implantable prosthesis - Google Patentes
The prosthesis is formed of a biologically compatible, flexible layer of repair fabric suitable for reinforcing tissue or ... while limiting the incidence of postoperative adhesions between a portion of the prosthesis and tissue or organs. ... An implantable prosthesis and a method of repairing an anatomical defect, such as a tissue or muscle wall defect, by promoting ... Blood vessel patch. US5110527. 15 Jun 1990. 5 May 1992. Sumitomo Electric Industries Ltd.. Polytetrafluoroethylene porous ...
Patent US6152956 - Prosthesis for endovascular repair of abdominal aortic aneurysms - Google Patents
The tube serves as a conduit for blood flow in an aneurysm of an aorta. First end of the lines are connected to a first end of ... Blood vessel graft and graft introducer. US6719781 *. 24 Dec 1999. 13 Apr 2004. Aptus Medical Inc.. Catheter apparatus having ... Branch vessel prosthesis with anchoring device and method. US20050171597 *. 8 Nov 2004. 4 Aug 2005. Boatman Scott E.. Helical ... Flareable branch vessel prosthesis and method. US8303669. 13 Sep 2010. 6 Nov 2012. Gi Dynamics, Inc.. Methods and apparatus for ...
Artificial Blood Vessels for Cancer Rese - Product - HANNOVER MESSE 2018
Karlsruher Institut für Technologie is exhibiting the product Artificial Blood Vessels for Cancer Rese at HANNOVER MESSE from ... Long-life prostheses and implants Artificial joints or anchorages for implants in dental medicine usually consist of metals. ... Cancer cells migrate into the blood, penetrate the walls of finest blood vessels, and form secondary tumors in other organs. ... For understanding the processes in blood vessels, however, it is important to also consider blood flow. At the Institute of ...
Patent US7121999 - Method of preparing layered graft prostheses - Google Patents
The bioengineered graft prostheses of the invention are prepared using methods that preserve cell compatibility, strength, and ... The bioengineered graft prostheses are used for implantation, repair, or for use in a mammalian host. ... The invention is directed to bioengineered graft prostheses made from two or more superimposed, chemically bonded layers of ... Multilayer bioreplaceable blood vessel prosthesis. US4902290. 29 Jul 1988. 20 Feb 1990. B. Braun-Ssc Ag. Process for the ...
Patent US6355056 - Implantable intraluminal prosthesis - Google Patents
... assembly is provided for use in repairing or replacing damaged or diseased portions of a blood vessel or other like vessel. The ... As such, the implantable prosthesis is provided with internal support for the graft when in a compressed state during ... prosthesis includes an expandable stent/graft combination, with a pair of stents at either end of the graft, and further ... stents and are capable of engagement with blood vessel 50 to assist in anchoring prosthesis 100 in place within blood vessel 50 ...
... through intravenous blood bags to heart valves, and many more. ... Unblocking blood vessels. In the latest heart surgery, thin ... Prosthesis. Plastics are now being used as orthopaedic devices, where they align, support or correct deformities. they can even ... are used to unblock blood vessels, while deposits obstructing them can be broken down with a tiny spiral-shaped implant - a ... An affected section of the aorta is removed and the gap is bridged by a flexible plastic prosthesis. Thanks to this, the bodys ...
Global Blood Vessel Prosthesis Market Professional Survey Report 2018 - Market Research Reports and Market Consultant
This report studies Blood Vessel Prosthesis in Global market, especially in North America, China, Europe, Southeast Asia, Japan ... 9.4 Blood Vessel Prosthesis Market Trend (Application). 10 Blood Vessel Prosthesis Marketing Type Analysis. 10.1 Blood Vessel ... 1.1.1 Definition of Blood Vessel Prosthesis. 1.1.2 Specifications of Blood Vessel Prosthesis. 1.2 Classification of Blood ... Global Blood Vessel Prosthesis Market Professional Survey Report 2018. Global Blood Vessel Prosthesis Market Professional ...
Human blood vessel-derived endothelial progenitors for endothelialization of small diameter vascular prosthesis : Research Bank
2009) Human blood vessel-derived endothelial progenitors for endothelialization of small diameter vascular prosthesis. PLoS ONE ... Human blood vessel-derived endothelial progenitors for endothelialization of small diameter vascular prosthesis. Journal ... item/88wvv/human-blood-vessel-derived-endothelial-progenitors-for-endothelialization-of-small-diameter-vascular-prosthesis ... Differentiation of human umbilical cord blood-derived mononuclear cells to endocrine pancreatic lineage. Parekh, Vishal S., ...
Dengue Vaccine Initiative Happy With Progress in Development of Dengue Vaccine
'Copy-and-paste DNA' Extremely...
Patent US6264684 - Helically supported graft - Google Patents
Blood vessel prosthesis. US4503569 *. 3 Mar 1983. 12 Mar 1985. Dotter Charles T. Transluminally placed expandable graft ... Compliant blood vessel graft. US8409224. 4 Oct 2010. 2 Apr 2013. Edgar L Shriver. Suturing graft tubes to lumen walls ... Graft stent and method of repairing blood vessels. US5084065. 10 Jul 1989. 28 Jan 1992. Corvita Corporation. Reinforced graft ... Process for producing a vessel prosthesis. US4596837. 21 Aug 1984. 24 Jun 1986. Daikin Industries Ltd.. Semisintered ...
TX2® Low Profile TAA Endovascular Graft - Full Text View - ClinicalTrials.gov
Vascular Prosthesis. Vascular Disease. Blood Vessel Prosthesis Implantation. Additional relevant MeSH terms: ... aneurysm or vessel leak requiring re-operation; deep vein thrombosis requiring surgical or lytic therapy; pulmonary embolism ... Endovascular Graft indicated for the treatment of patients with aneurysms/ulcers of the descending thoracic aorta having vessel ...
US4784659A - Vessel and prosthesis impregnated with diisocyanate crosslinked gelatin - Google Patents
The invention relates to vessel prostheses formed from a porous vascular prosthesis impregnated with diisocyanate crosslinked ... Blood vessel patch EP0495127A1 (en) * 1990-07-31. 1992-07-22. Ube Industries, Ltd.. Artificial blood vessel and production ... Vessel prosthesis for replacing hollow organs in humans and animals and in particular blood vessels have long been known. They ... The porous body of the vessel prosthesis can have the conventional structure of a textile vessel prosthesis, e.g. a smooth warp ...
Patent US8128687 - Drug-eluting stent with filament strands - Google Patents
The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial ... for controlled release of therapeutic drugs and for delivery of the therapeutic drugs in localized drug therapy in a blood ... vessel is disclosed. The polymeric sleeve is attached to at least a portion of an outside surface area of the stent structure. ... Multilayer bioreplaceable blood vessel prosthesis. US4994298. 18 Apr 1990. 19 Feb 1991. Biogold Inc.. Method of making a ...
Patent WO1996010375A1 - Assembly for treating blood vessels and a method therefor - Google Patents
... blood vessel in such a way as to substantially stop any loose parts of the blood vessel from obstructing the stream of blood ... through said blood vessel; and introducing means for introducing the artificial blood vessel inner layer into the blood vessel. ... of blood vessel inner layer previously removed from a blood vessel and/or for covering a predetermined length of damaged blood ... vessel inner layer, wherein said artificial blood vessel inner layer is associated with the existing ...
Patente US6206883 - Bioabsorbable materials and medical devices made therefrom - Google Patentes
Blood vessel prosthesis. WO1989001767A1. 31 Ago 1988. 9 Mar 1989. Russell Warren. Surgical fastener. ... Knee prosthesis assembly with ligament link. US8361113. 22 Jun 2009. 29 Ene 2013. Biomet Sports Medicine, Llc. Method and ... Knee prosthesis assembly with ligament link. US8506597. 25 Oct 2011. 13 Ago 2013. Biomet Sports Medicine, Llc. Method and ... Prosthesis with sustained release analgesic. US20040265282 *. 31 May 2002. 30 Dic 2004. Wright Emma Jayne. Fixation devices for ...
Browse School of Medicine | Stanford Medicine Profiles
Browse School of Medicine | Stanford Medicine Profiles
Retina prosthesis - Making artificial vision look more natural
Its a stretch: Giving direction to blood vessels. Dec 14, 2018. Researchers peel off slimy biofilms like old stickers. Dec 14 ... Retina prosthesis - Making artificial vision look more natural. (Nanowerk News) In laboratory tests, researchers have used ... The study was published in Neuron (High-Fidelity Reproduction of Spatiotemporal Visual Signals for Retinal Prosthesis), and ... Several types of retinal prostheses are under development. The Argus II, which was developed by Second Sight Therapeutics with ...
Pediatric cardiopulmonary bypass adaptati... & related info | Mendeley
Blood Vessel Prosthesis Implantation. *Cardiopulmonary Bypass. *Cardiopulmonary Bypass: methods. *Cardiopulmonary Bypass: ... Post-CPB circuit blood was re-infused. Chest tubes were removed with cessation of bleeding. Extubation was performed upon ... Baboon CPB requires modifications to include high systemic blood pressure for adequate perfusion into small coronary arteries, ... mean blood flow = 1.973 +/- .254 L/min, core temperature = 37.1 +/- .1 degree C, and CPB time = 60 +/- 40 minutes. No acidosis ...
Tissue repair fabric - Organogenesis, Inc.
This invention is directed to prosthesis, which, when implanted into a mammalian patient, serve as a functioning replacement ... Multilayer bioreplaceable blood vessel prosthesis. 1990-02-20. Yannas. 4822361. Tubular prosthesis having a composite structure ... Therefore, the prosthesis must be rendered non-thrombogenic if to be useful for small diameter blood vessel repair or ... The prosthesis construct is thrombogenic in small diameter blood vessel replacements. It can only be used in vascular ...
ImplantationStentGraftGraftsAneurysmStentsBoneComponents of the prosthesisComprising an elongateMultilayerOrgansKnee prosthesisRetinal prosthesesTubular prosthesisIntraluminalImplanted into a mammalian patientNerves or blood vesselsAortic2017Injured or diseasedDiameterAortaTissue-engineered blood vesselInfectionSurgicalDiabetesHeart and blood vesselsNervePatient's bodyTRACHEAEndothelializationArteriesCardiovascularExpandableSmall blood vesselsSurgeryAutologousEndoluminalIntervertebralProstheticInvention relatesBonesAtherosclerosisClot
- An endoluminal prosthesis for implantation within a body lumen to maintain luminal patency, including a support structure and a polymer component, which may be in the form of a wire member joined to a polymer cladding. (google.com)
- The bioengineered graft prostheses are used for implantation, repair, or for use in a mammalian host. (google.com.au)
- As such, the implantable prosthesis is provided with internal support for the graft when in a compressed state during implantation and is further provided with radial support along the length of the graft after implantation. (google.ca)
- Postoperative hemorrhage from an endovascular AORTIC ANEURYSM repaired with endoluminal placement of stent grafts (BLOOD VESSEL PROSTHESIS IMPLANTATION). (bioportfolio.com)
- At the previous NATO ASI on angiogenesis we delineated the ongoing attempts by us and others to restore "nature's biocompatible blood container" through " factitious angiogenesis ", i.e., by precoating the luminal surfaces of these prostheses with a functional, nonthrombogenic monolayer of autologous endothelial cells (ECs) prior to implantation (Lelkes et al .1992). (springer.com)
- Angiogenesis by bFGF is important for endothelialization in vascular prostheses and is significant from shortly after implantation. (nii.ac.jp)
- Collateral formation in ischemic heart disease is induced by angiogenic factors including bFGF.We hypothesized that tissue-fragmented (TF-) grafts are rich of angiogenic activity from shortly after implantation and it ability may work for collateral formation to the ischemic area when it is used for a small diameter vascular prosthesis in the coronary artery position. (nii.ac.jp)
- Each group can be further organized into tissue-engineering strategies for in situ vascular regeneration, in which the body's natural healing response is modulated by material design and fabrication, or strategies for ex vivo formation of a blood vessel substitute, whereby in vitro culture of human cells on polymer substrates before implantation defines their mechanical and biological properties. (pubmedcentralcanada.ca)
- 4] H. Sonoda, K. Takamizawa, Y. Nakayama, H. Yasui, and T. Matsuda, "Coaxial double-tubular compliant arterial graft prosthesis: time-dependent morphogenesis and compliance changes after implantation," J. Biomed. (fujipress.jp)
- The prosthesis may be used as a graft or a stent. (google.com)
- The prosthesis includes an expandable stent/graft combination, with a pair of stents at either end of the graft, and further includes a plurality. (google.ca)
- 12. An implantable graft/stent composite prosthesis of claim 11 wherein said elongate strut is secured to said graft at spaced-apart locations therealong. (google.ca)
- An intravascular stent having a prefabricated, patterned polymeric sleeve for controlled release of therapeutic drugs and for delivery of the therapeutic drugs in localized drug therapy in a blood vessel is disclosed. (google.co.uk)
- The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. (google.co.uk)
- A stent-graft prosthesis includes a generally tubular outer PTFE layer, a generally tubular helical stent, a generally tubular inner PTFE layer, and a suture or fabric support strip. (patents.com)
- With means to attach graft to natural blood vessel (e.g., hooks, etc. (uspto.gov)
- The invention is directed to bioengineered graft prostheses made from two or more superimposed, chemically bonded layers of processed tissue material prepared from cleaned tissue material derived from animal sources. (google.com.au)
- The bioengineered graft prostheses of the invention are prepared using methods that. (google.com.au)
- The bioengineered graft prostheses of the invention are prepared using methods that preserve cell compatibility, strength, and bioremodelability of the processed tissue matrix. (google.com.au)
- The invention is directed to bioengineered graft prostheses prepared from cleaned tissue material derived from animal sources. (google.com.au)
- 7. A prosthesis of claim 6 wherein said plurality of struts includes at least four struts substantially equally radially spread about said inner tubular surface of said graft. (google.ca)
- 9. An implantable prosthesis of claim 6 wherein said at least one strut coil is secured to said graft with strut sutures. (google.ca)
- The Zenith® TX2® Low Profile TAA Endovascular Graft study is a clinical trial approved by US FDA to evaluate the safety and effectiveness of the Zenith® TX2® Low Profile TAA Endovascular Graft indicated for the treatment of patients with aneurysms/ulcers of the descending thoracic aorta having vessel structure suitable for repair. (clinicaltrials.gov)
- The chimney graft technique for preserving visceral vessels during endovascular treatment of aortic pathologies. (springer.com)
- A compliant and biomimetic three-layered vascular graft for small blood vessels. (semanticscholar.org)
- Biologically, the graft triggers an inflammatory response with ingrowth of fibrous tissue and blood vessels, accompanied by osteoclasts from the host. (avhandlingar.se)
- The failure of synthetic vascular grafts due to de-endothelialization of the lumen as a result of exposure to fluid-induced shear stress prevents the widespread use of such grafts as small-diameter vessel replacements. (vanderbilt.edu)
- Thus, there is an increasing world-wide demand for permanent cardiovascular prostheses, such as vascular grafts, cardiac assist devices or total artificial hearts. (springer.com)
- It might be possible to have patent grafts in the coronary position, if we could have fine basic small-diameter fabric prosthesis with good handling characteristics, excellent antithrombogenicity. (nii.ac.jp)
- The tube serves as a conduit for blood flow in an aneurysm of an aorta. (google.co.uk)
- The purpose of this study is to assess the role of abdominal aneurysm and iliac aneurysm exclusion using an endovascular prosthesis. (bioportfolio.com)
- Abdominal aortic aneurysm with occlusion of three primary mesenteric vessels treated by surgery with perfusion of the left iliac artery. (bioportfolio.com)
- The BIOMArCS-AAA study aims to investigate the associations of (temporal patterns of) blood biomarkers with aneurysm growth in patients with abdominal aortic aneurysm (AAA), with particula. (bioportfolio.com)
- This invention relates to vascular repair devices, and in particular intravascular stents, which are adapted to be implanted into a patient's body lumen, such as a blood vessel or coronary artery, to maintain the patency thereof. (google.co.uk)
- Stents are particularly useful in the treatment of atherosclerotic stenosis in arteries and blood vessels. (google.co.uk)
- At least one of the stents is particularly suited for treating a widened portion of a blood vessel immediately proximal to a bifurcation. (freepatentsonline.com)
- Vessel stents coated with active substances, e.g. glucocorticoids, cystostatic agents, immune modulators or antiproliferative agents. (dhzb.de)
- He has pioneered a novel foot and ankle reconstruction surgery, using PMMA (Poly Methyl Methacrylate), also called Bone Cement, as foot bone replacement prosthesis for severely destroyed foot and ankle bones. (theseoultimes.com)
- However, this may be avoidable by replacing the bone with a prosthesis or a bone from elsewhere in the body. (dailymail.co.uk)
- The surgeon then sizes the stem of the prosthesis to ensure a snug fit into the hollow bone marrow space of the bone. (orthogate.org)
- A system for long bone arthroplasty includes humeral head prosthesis components, and an array of humeral head prosthesis components, each humeral head. (patents.com)
- Surgeons might also implant a metal prosthesis to replace the removed bone. (everydayhealth.com)
- Allograft bone is morsellised and impacted into the defect before a prosthesis is inserted. (avhandlingar.se)
- Micro-CT showed increased bone density after zoledronate treatment relative to the saline control, but by histology the bone surrounding the prosthesis had a more unstable structure when BMP-7 was used combined with zoledronate. (avhandlingar.se)
Components of the prosthesis2
- The tibial and femoral components of the prosthesis are then brought together to form the new knee joint, and the knee muscles and tendons are reattached. (fondren.com)
- We have already got the various components of the prosthesis and now will be putting them together," says Doctor Butruk-Raszeja. (edu.pl)
Comprising an elongate2
- 1. An endoluminal prosthesis, comprising an elongate support wire member joined alone an entire length thereof to at least one surface of a strip of polymer cladding, the joined support wire member and polymer cladding being helically wrapped into an open cylindrical structure such that adjacent windings of the polymer cladding have overlapping regions that are bonded to one another forming said prosthesis. (google.com)
- 1. An endoluminal prosthesis comprising an elongate support wire member joined along its length to an elongate planar expanded polytetrafluoroethylene film member, the joined support wire member and planar expanded polytetrafluoroethylene film member being helically wound into an open cylindrical configuration with adjacent windings forming overlapping regions of the expanded polytetrafluoroethylene film member bonded to one another. (google.ca)
- The perforations in the sheet are configured to provide throughholes in the wall of the multilayer prosthesis, when the prosthesis is in the implanted diameter within a vessel. (google.com)
- An implantable prosthesis and a method of repairing an anatomical defect, such as a tissue or muscle wall defect, by promoting tissue growth thereto, while limiting the incidence of postoperative adhesions between a portion of the prosthesis and tissue or organs. (google.es)
- Cancer cells migrate into the blood, penetrate the walls of finest blood vessels, and form secondary tumors in other organs. (hannovermesse.de)
- Being a disease of the blood vessels diabetes affects all organs. (theseoultimes.com)
- As a result, at the forefront of research, the paradigm is shifting from mechanical/electronic prostheses towards the development in vitro of tissue engineered organs/tissues, where the artificial part is fully integrated with the biological counterpart. (igi-global.com)
- When tissues and organs are replaced with prostheses it is not uncommon for all sorts of complications to arise. (tue.nl)
- Revision knee replacement surgery involves replacing part or all your previous knee prosthesis with a new prosthesis. (fondren.com)
- Then the old femoral component of the knee prosthesis is removed. (fondren.com)
- Revision knee replacement surgery is performed to replace failed knee prosthesis with a new prosthetic component. (fondren.com)
- A knee prosthesis was inserted into the tibia, which had been filled with impacted, morsellised allograft soaked in BMP-7 and/or zoledronate. (avhandlingar.se)
- Several types of retinal prostheses are under development. (nanowerk.com)
- While most retinal prostheses in the current clinical trials rely on stimulation by electrical pulses from electrode arrays to locally excite the patient's retinal neurons, several research groups are also trying more biologically compatible stimulation methods termed "optogenetics" which deploy viruses to transduce light-activated stimulator protein genes into select groups of retinal neurons which when expressed modulate their neural activity. (utah.edu)
- While most retinal prostheses in the current clinical trials rely on stimulators producing electrical pulses from electrode arrays to locally excite the patient's retinal neurons, several research groups are also trying more biologically compatible stimulation methods termed "optogenetics" which deploy patches of light-activated stimulator proteins expressed in groups of retinal neurons to selectively modulate their neural activity. (utah.edu)
- Disclosed is a tubular prosthesis formed by rolling a perforated sheet around a longitudinal axis. (google.com)
- the first, second, and third groups of apertures arranged on the sheet such that when the sheet is wrapped about an axis through at least about three revolutions to form a tubular prosthesis, apertures from the first, second, and third groups align to produce a plurality of ports extending through the side wall of the prosthesis. (google.com)
- An implantable intraluminal prosthesis assembly is provided for use in repairing or replacing damaged or diseased portions of a blood vessel or other like vessel. (google.ca)
- The MRI sequences will study outcomes related to blood flow inside AAA, microvasculature of the AAA vessel wall and intraluminal thrombus inside AAA. (bioportfolio.com)
Implanted into a mammalian patient1
- This invention is directed to prosthesis, which, when implanted into a mammalian patient, serve as a functioning replacement for a body part, or tissue structure, and will undergo controlled biodegradation occurring concomitantly with bioremodeling by the patient's living cells. (freepatentsonline.com)
Nerves or blood vessels1
- It may be done when the chondrosarcoma has grown into the nerves or blood vessels, or if the tumour is very big. (cancer.ca)
- In the late stage of syphilis, sometimes 20-30 years after the initial infection, damages are often seen in the blood vessels including the AORTA and the AORTIC VALVE. (bioportfolio.com)
- Daisy Wyatt, from Blackwood, Wales, was 14 years old when she died on March 1, 2017, of rare blood cancer Ewing's Sarcoma. (dailymail.co.uk)
Injured or diseased1
- Surgical insertion of synthetic or biological material to repair injured or diseased blood vessels. (labome.org)
- The throughholes are configured to facilitate neointimal cell growth, and in a preferred embodiment, to minimize roll bias in the prosthesis as it is expanded from its reduced, insertion diameter to its expanded, implanted diameter. (google.com)
- 3. An artificial blood vessel inner layer such as an artificial tunica-intima or the like, comprising at least one tube-like section of synthetic material, and diameter arranging means for increasing and/or decreasing the diameter of the tube-like section. (google.com.au)
- and (b) load applying means placing said tubular body in a reduced diameter state prior to the insertion, said load applying means removed from said body after said insertion of the tubular body so as to permit said tubular body to radially self-expand in the vessel. (patents.com)
- Current surgical therapy for diseased vessels less than 6mm in diameter involves bypass grafting with autologous arteries or veins. (semanticscholar.org)
- Antithrombogenicity is important when the diameter of vascular prostheses become small for satisfactory patency. (nii.ac.jp)
- As pointed out by the researcher, large-diameter vascular prostheses have already been applied in medical practice and with success. (edu.pl)
- However, implants for small-diameter vessels, up to 4-5 mm in diameter (such as coronary ones), that would be sufficiently biocompatible are still not available. (edu.pl)
- A big challenge that we face is blood clotting," says Doctor Butruk-Raszeja, "If a small clot forms in a vessel with a large diameter, the blood can still flow. (edu.pl)
- But this won't be possible in a small-diameter vessel. (edu.pl)
- the plurality of thin lines including at least six thin lines spaced about a circumference of the tube, each of the lines being sufficiently thin so as to not obstruct blood flow to the coeliac, mesenteric and renal arteries regardless of the angular orientation of the tube and the anchoring unit within the aorta. (google.co.uk)
- An affected section of the aorta is removed and the gap is bridged by a flexible plastic prosthesis. (plasticseurope.org)
- Blood vessels are derived from another part of the patient's body, usually, the lower leg and a bridge are created between the main artery (aorta) and the coronary artery. (edu.pl)
Tissue-engineered blood vessel2
- These results demonstrated that endogenous bFGF is important for endothelialization due to angiogenesis in fabric vascular prostheses, whereas thrombus and infection might have a negative effect. (nii.ac.jp)
- You may also require other treatment to help you recover fully such as blood vessel repairs (for blood flow problems), or hyperbaric (oxygen) treatments to heal infection. (orlandohealth.com)
- They can also help patients manage diabetes, blood pressure and cholesterol as well as treat artery disease. (vitals.com)
- The use of prosthesis in a patient living with diabetes increases the cardiac strain to over 15%, leading to cardiac failure over a period of time. (theseoultimes.com)
- Blood Vessels: Diabetes damages blood vessels, especially the smallest blood vessels such as those in the penis. (nfb.org)
- Many medications, including common medicines prescribed for diabetes and its complications, can cause ED. The most common offenders are blood pressure drugs, antihistamines, antidepressants, tranquilizers, appetite suppressants, and cimetidine (an ulcer drug). (nfb.org)
- Any of these surgeries may be necessary due to health problems such as poor blood flow - as you might find with diabetes, atherosclerosis (hardening of the arteries), blood clots, severe infections or cancer. (orlandohealth.com)
Heart and blood vessels1
- Method of collecting images of the heart and blood vessels. (dhzb.de)
- When the blood vessels that feed the optic nerve become blocked, it can result in reduced blood flow, or ischemia. (henryford.com)
- This is the more common form of AION and is believed to result from a circulatory insufficiency, or infarct, affecting the blood vessels supplying the optic nerve head. (henryford.com)
- There are a variety of reasons for why men experience erectile dysfunction due to the interaction of numerous bodily systems including blood circulation, nerve interaction, hormonal release and mental awareness. (amazonaws.com)
- The technologies developed here enable new tissues - such as cartilage, intervertebral discs, blood vessels, heart tissue and organ tissue - to be grown inside the patient's body. (tue.nl)
- The ventral slot is commonly performed by splitting the ventral soft tissues of the neck, pushing the great vessels laterally and entering the disc space, securing esophagus and trachea which are located in the midline. (wikipedia.org)
- Because every surgery comes along with some kind of risk, possible complications are an injury of the structures on the way to the disc space ( like nerves, trachea and esophagus or vessels), resulting in intraoperative blood loss, apoplexy, postoperative paresis or tetraparesis or pneumonia. (wikipedia.org)
- In this chapter we discuss new evidence, indicating that endothelialization of the blood contacting surface in some cardiovascular prostheses may occur through "genuine" angiogenic processes. (springer.com)
- Publications] Tomizawa Y: 'Endogenous basic fibroblast growth factor for endothelialization due to angiogenesis in fabric vascular prostheses' ASAIO J. 42. (nii.ac.jp)
- Synthetic material also plays a vital role for diseased arteries that cannot be helped via vessel support. (plasticseurope.org)
- Baboon CPB requires modifications to include high systemic blood pressure for adequate perfusion into small coronary arteries, careful CPB weaning to prevent ventricular distention, and drug and fluid interventions to abate variable venous return related to a muscularized spleno-splanchnic venous capacity. (mendeley.com)
- Vascular surgeons treat and manage disorders in your veins, arteries and your lymphatic system to ensure blood circulation in your heart and in brain is the best it can be. (vitals.com)
- three months, with similar periods for cardiovascular tissues, that is, heart valves and vessels. (innovations-report.com)
- Preferably, the prosthesis is self expandable under the radially outwardly directed spring bias of the rolled sheet. (google.com)
Small blood vessels2
- At the Institute of Microstructure Technology (IMT) of KIT, a microfluidic system has been developed to simulate processes in small blood vessels taking into account flow mechanics. (hannovermesse.de)
- The top plate is provided with capillary channels simulating small blood vessels. (hannovermesse.de)
- In the latest heart surgery, thin tubes (catheters) are used to unblock blood vessels, while deposits obstructing them can be broken down with a tiny spiral-shaped implant - a vessel support. (plasticseurope.org)
- If limb-sparing surgery is not an option, Children's Cancer Hospital offers the most advanced prostheses, with specialized pediatric rehabilitation services. (mdanderson.org)
- This type of surgery is also called an en bloc resection. (cancer.ca)
- Most people who have an amputation will use an artificial limb (prosthesis) after surgery. (cancer.ca)
- Maintain Hardness for Erectile Dysfunction can involve direct injections to the penis, penile prosthesis and vascular surgery. (amazonaws.com)
- Patients who have limb-saving surgery often will have to undergo reconstructive surgery to repair tendons, nerves, and blood vessels damaged by the cancer surgery. (everydayhealth.com)
- So when one of these patients needs surgery for a penile implant or prosthesis, an "awake surgery," conscious sedation or twilight anesthesia might be the answer, says Dr. J. Francois Eid, director of Advanced Urological Care, and Clinical Associate Professor of Urology at Weill/Cornell Medical College in New York City . (marketwired.com)
- Today, if coronary vessels (meaning those around the heart) are blocked, a so-called bypass surgery is performed. (edu.pl)
- Both the anatomical repair of malfunctioning blood vessels and/or their replacement by grafting autologous blood-conduits are only partially successful: a large percentage (up to 30%) of all angioplasty as well as (coronary) bypass procedures eventually fail mainly due to re-stenosis. (springer.com)
- The limited availability of healthy autologous vessels for bypass grafting procedures has led to the fabrication of prosthetic vascular conduits. (pubmedcentralcanada.ca)
- 2. The endoluminal prosthesis according to claim 1 , further comprising a planar polytetrafluoroethylene film member in intimate contact with and monolithically joined to the planar expanded polytetrafluoroethylene film member, the support wire member being intermediate the second planar expanded polytetrafluoroethylene film member and the planar expanded polytetrafluoroethylene film member. (google.ca)
- 3. The endoluminal prosthesis according to claim 1 , further comprising a bonding agent joining the support wire member and the planar expanded polytetrafluoroethylene film member. (google.ca)
- 4. The endoluminal prosthesis according to claim 2 , further comprising an adhesive interlayer interdisposed between the planar polytetrafluoroethylene film member and the planar expanded polytetrafluoroethylene film member. (google.ca)
- The present invention relates to an intervertebral disc prosthesis preferably comprising at least three pieces including an upper plate (1), a lower plate (2). (patents.com)
- A prosthetic device can be used as a prosthesis following a discectomy or a corpectomy. (patents.com)
- The invention relates to a blood vessel treating assembly comprising: an artificial blood vessel inner layer such as an artificial tunica-intima or the like for replacing a section of blood vessel inner layer previously removed from a blood vessel and/or for covering a predetermined length of damaged. (google.com.au)
- Prophylactic antibiotics may be added when the prosthesis is made for replacing the non-infected, destroyed bones of a Charcot foot. (theseoultimes.com)
- However, except for AIMS, PMMA Replacement Prosthesis has probably never been used by any other major diabetic foot centre in the world for the replacement of destroyed foot and ankle bones. (theseoultimes.com)
- The prosthesis is inserted into the ends of both finger bones. (orthogate.org)
- GTM-V, which is cooperating with Gewebebank Mecklenburg-Vorpommern in Rostock, is one of the few facilities in Germany that provides for the entire spectrum of postmortem donations (extraction of eye corneas, bones, tendons, skin, heart valves, blood vessels after death) and some live donations (heart valves). (innovations-report.com)
- There was no invasion of blood vessels, other bones or soft tissue and we are rather puzzled by this. (cancer.org)
- Furthermore, the rejection process per se is not abrogated, and often it manifests itself in the form of accelerated atherosclerosis in the blood vessels of the transplanted tissues (Mills et al . (springer.com)
- You may be asked to stop taking aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve, Naprosyn), clopidogrel (Plavix), warfarin (Coumadin), and any other drugs that make it hard for your blood to clot. (medlineplus.gov)
- Keeping blood moving reduces your risk of getting a blood clot . (medlineplus.gov)