Bone Screws: Specialized devices used in ORTHOPEDIC SURGERY to repair bone fractures.Bone and Bones: A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.Defibrillators, Implantable: Implantable devices which continuously monitor the electrical activity of the heart and automatically detect and terminate ventricular tachycardia (TACHYCARDIA, VENTRICULAR) and VENTRICULAR FIBRILLATION. They consist of an impulse generator, batteries, and electrodes.Osseointegration: The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants).Fracture Fixation, Internal: The use of internal devices (metal plates, nails, rods, etc.) to hold the position of a fracture in proper alignment.Bone Remodeling: The continuous turnover of BONE MATRIX and mineral that involves first an increase in BONE RESORPTION (osteoclastic activity) and later, reactive BONE FORMATION (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium HOMEOSTASIS. An imbalance in the regulation of bone remodeling's two contrasting events, bone resorption and bone formation, results in many of the metabolic bone diseases, such as OSTEOPOROSIS.X-Ray Microtomography: X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.Fracture Healing: The physiological restoration of bone tissue and function after a fracture. It includes BONY CALLUS formation and normal replacement of bone tissue.Bone Density: The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.Bone Resorption: Bone loss due to osteoclastic activity.Bone Marrow: The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells.Bone Neoplasms: Tumors or cancer located in bone tissue or specific BONES.Bone Development: The growth and development of bones from fetus to adult. It includes two principal mechanisms of bone growth: growth in length of long bones at the epiphyseal cartilages and growth in thickness by depositing new bone (OSTEOGENESIS) with the actions of OSTEOBLASTS and OSTEOCLASTS.Bone Marrow Cells: Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells.Equipment Failure: Failure of equipment to perform to standard. The failure may be due to defects or improper use.Bone Diseases: Diseases of BONES.Implantable Neurostimulators: Surgically placed electric conductors through which ELECTRIC STIMULATION of nerve tissue is delivered.Spinal Fusion: Operative immobilization or ankylosis of two or more vertebrae by fusion of the vertebral bodies with a short bone graft or often with diskectomy or laminectomy. (From Blauvelt & Nelson, A Manual of Orthopaedic Terminology, 5th ed, p236; Dorland, 28th ed)Tachycardia, Ventricular: An abnormally rapid ventricular rhythm usually in excess of 150 beats per minute. It is generated within the ventricle below the BUNDLE OF HIS, either as autonomic impulse formation or reentrant impulse conduction. Depending on the etiology, onset of ventricular tachycardia can be paroxysmal (sudden) or nonparoxysmal, its wide QRS complexes can be uniform or polymorphic, and the ventricular beating may be independent of the atrial beating (AV dissociation).Bone Regeneration: Renewal or repair of lost bone tissue. It excludes BONY CALLUS formed after BONE FRACTURES but not yet replaced by hard bone.Internal Fixators: Internal devices used in osteosynthesis to hold the position of the fracture in proper alignment. By applying the principles of biomedical engineering, the surgeon uses metal plates, nails, rods, etc., for the correction of skeletal defects.Bone Transplantation: The grafting of bone from a donor site to a recipient site.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.Electric Countershock: An electrical current applied to the HEART to terminate a disturbance of its rhythm, ARRHYTHMIAS, CARDIAC. (Stedman, 25th ed)Bone Matrix: Extracellular substance of bone tissue consisting of COLLAGEN fibers, ground substance, and inorganic crystalline minerals and salts.Fractures, Bone: Breaks in bones.Bone Plates: Implantable fracture fixation devices attached to bone fragments with screws to bridge the fracture gap and shield the fracture site from stress as bone heals. (UMDNS, 1999)Bone Marrow Transplantation: The transference of BONE MARROW from one human or animal to another for a variety of purposes including HEMATOPOIETIC STEM CELL TRANSPLANTATION or MESENCHYMAL STEM CELL TRANSPLANTATION.Ventricular Fibrillation: A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). It is one of the major electrocardiographic patterns seen with CARDIAC ARREST.Death, Sudden, Cardiac: Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)Equipment Design: Methods of creating machines and devices.Pacemaker, Artificial: A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).Infusion Pumps, Implantable: Implanted fluid propulsion systems with self-contained power source for providing long-term controlled-rate delivery of drugs such as chemotherapeutic agents or analgesics. Delivery rate may be externally controlled or osmotically or peristatically controlled with the aid of transcutaneous monitoring.Bone Substitutes: Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.Device Removal: Removal of an implanted therapeutic or prosthetic device.Arrhythmias, Cardiac: Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.Bone Diseases, MetabolicElectrodes, Implanted: Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body.Equipment Safety: Freedom of equipment from actual or potential hazards.Prosthesis Implantation: Surgical insertion of a prosthesis.Equipment Failure Analysis: The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Thoracic Vertebrae: A group of twelve VERTEBRAE connected to the ribs that support the upper trunk region.Bone Morphogenetic Proteins: Bone-growth regulatory factors that are members of the transforming growth factor-beta superfamily of proteins. They are synthesized as large precursor molecules which are cleaved by proteolytic enzymes. The active form can consist of a dimer of two identical proteins or a heterodimer of two related bone morphogenetic proteins.Lumbar Vertebrae: VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.Bone Nails: Rods of bone, metal, or other material used for fixation of the fragments or ends of fractured bones.Electric Injuries: Injuries caused by electric currents. The concept excludes electric burns (BURNS, ELECTRIC), but includes accidental electrocution and electric shock.Bone Cements: 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.Femur: The longest and largest bone of the skeleton, it is situated between the hip and the knee.Bone Morphogenetic Protein 2: A potent osteoinductive protein that plays a critical role in the differentiation of osteoprogenitor cells into OSTEOBLASTS.Tibia: The second longest bone of the skeleton. It is located on the medial side of the lower leg, articulating with the FIBULA laterally, the TALUS distally, and the FEMUR proximally.Osteogenesis: The process of bone formation. Histogenesis of bone including ossification.Syncope: A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)Temporal Bone: Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).Fluoroscopy: Production of an image when x-rays strike a fluorescent screen.Follow-Up Studies: Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.AxisScoliosis: An appreciable lateral deviation in the normally straight vertical line of the spine. (Dorland, 27th ed)Spinal DiseasesCervical Vertebrae: The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK.Parietal Bone: One of a pair of irregularly shaped quadrilateral bones situated between the FRONTAL BONE and OCCIPITAL BONE, which together form the sides of the CRANIUM.Telemetry: Transmission of the readings of instruments to a remote location by means of wires, radio waves, or other means. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Orthopedic Procedures: Procedures used to treat and correct deformities, diseases, and injuries to the MUSCULOSKELETAL SYSTEM, its articulations, and associated structures.Biomechanical Phenomena: The properties, processes, and behavior of biological systems under the action of mechanical forces.Bone Cysts: Benign unilocular lytic areas in the proximal end of a long bone with well defined and narrow endosteal margins. The cysts contain fluid and the cyst walls may contain some giant cells. Bone cysts usually occur in males between the ages 3-15 years.Osteoporosis: Reduction of bone mass without alteration in the composition of bone, leading to fractures. Primary osteoporosis can be of two major types: postmenopausal osteoporosis (OSTEOPOROSIS, POSTMENOPAUSAL) and age-related or senile osteoporosis.Surgery, Computer-Assisted: Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.Retrospective Studies: 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.Pelvic Bones: Bones that constitute each half of the pelvic girdle in VERTEBRATES, formed by fusion of the ILIUM; ISCHIUM; and PUBIC BONE.Cadaver: A dead body, usually a human body.Anti-Arrhythmia Agents: Agents used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Anti-arrhythmia agents are often classed into four main groups according to their mechanism of action: sodium channel blockade, beta-adrenergic blockade, repolarization prolongation, or calcium channel blockade.Spine: The spinal or vertebral column.Osteoblasts: Bone-forming cells which secrete an EXTRACELLULAR MATRIX. HYDROXYAPATITE crystals are then deposited into the matrix to form bone.Alveolar Bone Loss: Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE.Orthopedic Fixation Devices: Devices which are used in the treatment of orthopedic injuries and diseases.Spinal Fractures: Broken bones in the vertebral column.Amplifiers, Electronic: Electronic devices that increase the magnitude of a signal's power level or current.Sacrum: Five fused VERTEBRAE forming a triangle-shaped structure at the back of the PELVIS. It articulates superiorly with the LUMBAR VERTEBRAE, inferiorly with the COCCYX, and anteriorly with the ILIUM of the PELVIS. The sacrum strengthens and stabilizes the PELVIS.Titanium: A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)Osteoclasts: A large multinuclear cell associated with the BONE RESORPTION. An odontoclast, also called cementoclast, is cytomorphologically the same as an osteoclast and is involved in CEMENTUM resorption.Cervical Atlas: The first cervical vertebra.Amiodarone: An antianginal and class III antiarrhythmic drug. It increases the duration of ventricular and atrial muscle action by inhibiting POTASSIUM CHANNELS and VOLTAGE-GATED SODIUM CHANNELS. There is a resulting decrease in heart rate and in vascular resistance.Electric Power Supplies: Devices that control the supply of electric current for running electrical equipment.Electrocardiography: Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Cardiac Pacing, Artificial: Regulation of the rate of contraction of the heart muscles by an artificial pacemaker.Atlanto-Axial Joint: The joint involving the CERVICAL ATLAS and axis bones.Fracture Fixation, Intramedullary: The use of nails that are inserted into bone cavities in order to keep fractured bones together.Bone Wires: Steel wires, often threaded through the skin, soft tissues, and bone, used to fix broken bones. Kirschner wires or apparatus also includes the application of traction to the healing bones through the wires.Neuronavigation: Intraoperative computer-assisted 3D navigation and guidance system generally used in neurosurgery for tracking surgical tools and localize them with respect to the patient's 3D anatomy. The pre-operative diagnostic scan is used as a reference and is transferred onto the operative field during surgery.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Femoral Fractures: Fractures of the femur.Neural Prostheses: Medical devices which substitute for a nervous system function by electrically stimulating the nerves directly and monitoring the response to the electrical stimulation.Tibial FracturesCardiac Resynchronization Therapy Devices: Types of artificial pacemakers with implantable leads to be placed at multiple intracardial sites. They are used to treat various cardiac conduction disturbances which interfere with the timing of contraction of the ventricles. They may or may not include defibrillating electrodes (IMPLANTABLE DEFIBRILLATORS) as well.Occipital Bone: Part of the back and base of the CRANIUM that encloses the FORAMEN MAGNUM.Radio Frequency Identification Device: Machine readable patient or equipment identification device using radio frequency from 125 kHz to 5.8 Ghz.Postoperative Complications: Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Examples include a wide variety of pins, rods, screws, and plates used to anchor fractured bones while they heal. Metallic ... Biofunctionalisation Implantable devices List of orthopedic implants Medical device Prosthesis Wong, J.Y.; Bronzino, J.D.; ... Orthopaedic implants help alleviate issues with the bones and joints of the body. They're used to treat bone fractures, ... Some implants are bioactive, such as subcutaneous drug delivery devices in the form of implantable pills or drug-eluting stents ...
... bone nails MeSH E07.858.442.660.110 --- bone plates MeSH E07.858.442.660.115 --- bone screws MeSH E07.858.442.660.120 --- bone ... implantable MeSH E07.505.508 --- insulin infusion systems MeSH E07.532.276 --- contact lenses MeSH E07.532.276.360 --- contact ... bone nails MeSH E07.695.125 --- bone plates MeSH E07.695.130 --- bone screws MeSH E07.695.140 --- breast implants MeSH E07.695. ... implantable MeSH E07.296.319 --- electrodes, implanted MeSH E07.296.319.074 --- auditory brain stem implants MeSH E07.296. ...
Examples include a wide variety of pins, rods, screws, and plates used to anchor fractured bones while they heal.[1][2][3] ... Some implants are bioactive, such as subcutaneous drug delivery devices in the form of implantable pills or drug-eluting stents ... Orthopaedic implants help alleviate issues with the bones and joints of the body. They're used to treat bone fractures, ... In United Kingdom, Prof Derek Alderson, president of the Royal College of Surgeons, concludes: "All implantable devices should ...
0.14 percent Screw or abutment loosening: 12.7 percent Abutment screw fracture: 0.35 percent Progressive vertical bone loss but ... The first use of titanium as an implantable material was by Bothe, Beaton and Davenport in 1940, who observed how close the ... large source of bone and microvascular bone graft where the blood supply to the bone is transplanted with the source bone and ... bone or allograft (donor bone or synthetic bone substitute), covered with a semi-permeable membrane and allowed to heal. During ...
... bone fixation screws, prostheses, body piercing jewelry) are made out of austenitic steel, often 316L and 316LVM compliant to ... "ASTM F754 - 08 Standard Specification for Implantable Polytetrafluoroethylene (PTFE) Sheet, Tube, and Rod Shapes Fabricated ... Bone, horn, ivory and such should not be autoclaved, as it will destroy them. They are also unsuitable for unhealed piercings ... Amber is commonly used for inlays in metal jewelry or in plugs made of horn, bone or wood etc., but there are also massive ...
The method works by inserting a titanium bolt into the bone at the end of the stump. After several months the bone attaches ... Wrist units are either screw-on connectors featuring the UNF 1/2-20 thread (USA) or quick-release connector, of which there are ... No neurocognitive prostheses are currently available but the development of implantable neurocognitive brain-computer ... When a subject rotates the residual arm, the magnet will rotate with the residual bone, causing a change in magnetic field ...
The method works by inserting a titanium bolt into the bone at the end of the stump. After several months the bone attaches ... Wrist units are either screw-on connectors featuring the UNF 1/2-20 thread (USA) or quick-release connector, of which there are ... No neurocognitive prostheses are currently available but the development of implantable neurocognitive brain-computer ... Direct bone attachment and osseointegrationEdit. Main article: Osseointegration. Osseointegration is a method of attaching the ...
During a debate with Farrell Till, Hovind said that Donald Johanson had uncovered the leg bones of Lucy at a different site ... Frauenfelder, Mark (1996-12-23). "BS Detector: Mark of the Beast in an Implantable Microchip". Wired. Retrieved 2015-05-31. " ... 1996), at [1]. Drach, Mike (December 15, 2005). "Screw the Taxman: The Weird Ideas of Tax Cheaters". DigitalJournal.com. ...
Pins or screws to set and hold bones may be used. Sections of bone may be replaced with prosthetic rods or other parts. ... Implantable loop recorder. Cardiac stress test Bruce protocol. Electrophysiology study. Cardiac imaging. Angiocardiography. ... arthrodesis - surgical connection of adjacent bones so the bones can grow together into one. Spinal fusion is an example of ... In certain cases, bone may be cut to further access the interior of the body; for example, cutting the skull for brain surgery ...
Cardiology for diagnostic angiography, percutaneous coronary interventions, (pacemakers, implantable cardioverter ... such as bone tissue) on the fluorescent screen. Images on the screen are produced as the unattenuated or mildly attenuated X- ...
A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls. Another form of linear actuator based on a rotating rod is the threadless ballscrew, a.k.a. "rolling ring drive". In this design, three (or more) rolling-ring bearings are arranged symmetrically in a housing surrounding a smooth (thread-less) actuator rod or shaft. The bearings are set at an angle to the rod, and this angle ...
Open Reduction Internal Fixation (ORIF) involves the implementation of implants to guide the healing process of a bone, as well as the open reduction, or setting, of the bone. Open reduction refers to open surgery to set bones, as is necessary for some fractures. Internal fixation refers to fixation of screws and/or plates, intramedullary bone nails (femur, tibia, humerus) to enable or facilitate healing. Rigid fixation prevents micro-motion across lines of fracture to enable healing and prevent infection, which happens when implants such as plates (e.g. dynamic compression plate) are used. Open Reduction Internal Fixation techniques often are used in cases involving serious fractures such as comminuted or displaced fractures or, in cases where the bone otherwise would not heal correctly with casting or splinting alone. ...
From the 1860s to the 1880s, Prussia and later the German Empire built a series of screw corvettes to expand and modernize its fleet of cruising warships. In total, twenty-three ships of the type were built, mostly between six different ship classes. The first two ships, the Nymphe class, were built in the early 1860s as Prussia began to prepare for an eventual conflict with Denmark over the Schleswig-Holstein Question, though only Nymphe entered service in time for the Second Schleswig War in 1864. During the war, Prussia purchased the two Augusta-class corvettes that had been secretly ordered by the Confederate States Navy from France, after the French Emperor Napoleon III blocked their delivery to the Confederates. The three ships of the Ariadne class were laid down in the late 1860s and early 1870s, and these were followed by two Leipzig-class corvettes in the early 1870s. The six-ship Bismarck class was built in the mid-1870s to early 1880s, and was followed by another group of six ships, ...
... , sometimes called the Indian screw tree, is a species of small tree or large shrub found in Asia including Indian Subcontinent, South China, Malay Peninsula, Java and Saudi Arabia. Also, found in Australia. The red flowers are pollinated mainly by birds of the sunbird family. It possesses an impressive range of nutritional and medicinal properties. Fibres from the bark are used to make rope. They are also visited by many butterflies and hymenoptera. Sanskrit - Avartani; Avartphala Hindi - Marorphali (मरोड़ फली ), Bhendu, Jonkphal, English - Indian Screw Tree, East Indian Screw Tree, Deer's Horn Marathi - Kewad, Muradsheng (मुरुड शेंग) Bengali - Antamora Gujarati - Maradashingh Kannada - Yedmuri Telugu - Vadampiri Malayalam - Idampiri Valampiri (ഇടംപിരി വലംപിരി) Thai - สมุนไพรปอกะบิด , S̄amunpra pai ka bid Sinhala - Liniya (ලීනිය) Other vernacular names of H. isora are - Mochra ; ...
The Type C4-class ship were the largest cargo ships built by the United States Maritime Commission (MARCOM) during World War II. The design was originally developed for the American-Hawaiian Lines in 1941, but in late 1941 the plans were taken over by the MARCOM. Eighty-one ships were built as cargo or troopships in four shipyards: Kaiser Richmond, California (35 ships), Kaiser Vancouver, Washington (20 ships), Sun Shipbuilding and Drydock in Chester, Pennsylvania (20 ships) and Bethlehem Steel Sparrows Point, Maryland (6 ships). All ships were capable of 17 knots (31 km/h; 20 mph), driven by a single screw steam turbine generating 9,900 shaft horsepower (7,400 kW). Among the variations of the design were the Haven-class hospital ship. They were followed post-war by thirty-seven of the larger C4-S-1 class, also known as the Mariner class.[1][2] ...
Bolted joints are very common in construction and machine design. They are cap screws or studs that grab and join other parts, and are secured by screw threads. ...
First invented in 1898 by Willard M. Farrow, the "coaster brake", also known as a "back pedal brake" or "foot brake" ("torpedo" or "contra" in some countries, in Italy "contropedale"), is a type of drum brake integrated into the back hub with an internal freewheel. Freewheeling functions as with other systems, but when back pedaled, the brake engages after a fraction of a revolution. The coaster brake can be found in both single-speed and internally geared hubs.. When such a hub is pedaled forwards, the sprocket drives a screw which forces a clutch to move along the axle, driving the hub shell or gear assembly. When pedaling is reversed, the screw drives the clutch in the opposite direction, forcing it either between two brake shoes and pressing them against the brake mantle (which is a steel liner within the hub shell), or into a split collar and expanding it against the mantle. The braking surface is often steel, and the braking element brass or phosphor-bronze, as in the Birmingham-made Perry ...
... 's highly articulated stock body has gone through several changes over the years. Early Pullips-the first 10 releases from July to December 2003-had what is called the Type 1 body, which was a Marmit-style action figure body with visible screws. The first three Pullip releases (Wind/Debut, Street, and Moon) have necks that can snap easily under the weight of the oversized Pullip head, but this fragile neck problem was corrected with later releases. Another common problem with the Type 1 body is vertical splitting between the two halves of the legs. All Pullips released on the Type 1 body have rooted hair.. Starting in January 2004 with the release of Pullip Venus, a new stock body was introduced. The Type 2 body had a soft torso, no visible screws, and joints that could be pulled apart. This body had more realistic proportions and, to date, is the most posable, flexible, and articulated Pullip stock body ever released. The primary disadvantage of this body is that the ...
In wet granulation, granules are formed by the addition of a granulation liquid onto a powder bed which is under the influence of an impeller (in a high-shear granulator), screws (in a twin screw granulator) [1] or air (in a fluidized bed granulator). The agitation resulting in the system along with the wetting of the components within the formulation results in the aggregation of the primary powder particles to produce wet granules.[1] The granulation liquid (fluid) contains a solvent or carrier material which must be volatile so that it can be removed by drying, and depending on the intended application, be non-toxic. Typical liquids include water, ethanol and isopropanol either alone or in combination. The liquid solution can be either aqueous based or solvent-based. Aqueous solutions have the advantage of being safer to deal with than other solvents. Water mixed into the powders can form bonds between powder particles that are strong enough to lock them together. However, once the water ...
For the ARIES algorithm to work a number of log records have to be created during the operation of the database. Log entries are sequentially ordered with Sequence Numbers. Usually the resulting logfile is stored on so-called "stable storage", that is a storage medium that is assumed to survive crashes and hardware failures. To gather the necessary information for the logging two data structures have to be maintained: the dirty page table (DPT) and the transaction table (TT). The dirty page table keeps record of all the pages that have been modified and not yet written back to disc and the first Sequence Number that caused that page to become dirty. The transaction table contains all transactions that are currently running and the Sequence Number of the last log entry they caused. We create log records of the form (Sequence Number, Transaction ID, Page ID, Redo, Undo, Previous Sequence Number). The Redo and Undo fields keep information about the changes this log record saves and how to undo ...
Excessive spindle speed will cause premature tool wear, breakages, and can cause tool chatter, all of which can lead to potentially dangerous conditions. Using the correct spindle speed for the material and tools will greatly enhance tool life and the quality of the surface finish. For a given machining operation, the cutting speed will remain constant for most situations; therefore the spindle speed will also remain constant. However, facing, forming, parting off, and recess operations on a lathe or screw machine involve the machining of a constantly changing diameter. Ideally this means changing the spindle speed as the cut advances across the face of the workpiece, producing constant surface speed (CSS). Mechanical arrangements to effect CSS have existed for centuries, but they were never applied commonly to machine tool control. In the pre-CNC era, the ideal of CSS was ignored for most work. For unusual work that demanded it, special pains were taken to achieve it. The introduction of ...
There are numerous variants of the M203 manufactured in the U.S., and throughout the world, for various applications. These vary chiefly in the length of the barrel, attachment type, and quick detach (QD) capability. The standard M203 is intended for permanent attachment to the M16A1, M16A2 and M16A3 rifles, and utilizes a 12-inch rifled barrel. The M203 unmodified to an A1/A2 series will not fit on the M4 Carbine series. The U.S. M203A1 has a barrel of 12 inches, while the SOPMOD M203A1 has a 9-inch barrel. The M203A1 is intended for use with the M4 and M4A1 Carbine, and uses a special bracket mount consisting of three screws and lacing wire. Only M203A2's consist of a Quick Release Bracket. The Canadian M203A1 by Diemaco (now Colt Canada) is a similar design with a different mounting system that does not require mounting points of the same profile as the M16A1 rifle's.[15] The weapon's 9-inch barrel slides further forward than the standard American models, which allows longer rounds to be ...
Since it is very old, the University has many legends and traditions. These are often passed on by older students to the younger ones. Tour guides also tell these stories to tourists. The wooden spoon tradition was to give this type of spoon to the student who was the worst in the year for mathematics but still passed the exams. This was because the students used to be ranked in order of their result. After 1909 this was changed and so the wooden spoon cannot be given anymore. However, still today in many sport competitions a wooden spoon is given to the last person in the rankings.[25] Many legends exist about places in Cambridge. For example, there is a story about the Mathematical Bridge in Queen's College. Newton built it without using any bolts or screws. Some people then took it down to see how it was made. When they tried to put it up again they could not do it, so they had to insert many bolts. Another tradition is that the King's College choir sings the Nine Lessons and Carols ...
The anchoring assemblies include a linking member attached in a ball-and-socket fashion to a bone-engaging member that is ... The linking member joins one of the included connectors to an associated bone-engaging member. The connectors are selectively ... anchoring assemblies each include a support collar and a split retention ring that cooperate to allow adjustment of the bone- ... adapted to engage a spinal bone of a patient. ... Surgically implantable device for spinal columns. US4887596. 2 ...
The driver member is rotated driving the bone screw into the previously cut bore in the patients bone until the tapered surface ... The bone screw driving end portion is placed in the wedge shaped notch seat of a driver member and a drive collar is mounted ... In operation a bore is drilled in the patients bone with the top portion of the bore having a tapered geometry which widens ... A combination driver and bone screw assembly comprising a screw shank with a uniform diameter threaded portion, an unthreaded ...
The present invention also provides a bone screw having a resorbable material for a threaded first part. The bone screw first ... A lag screw is also provided for positional retention of the first section of the bone with respect to the second section of ... the bone. The lag screw also has a first part of a resorbable material for threaded connection of the lag screw within the bore ... of the bone in at least the first section of the bone, the lag screw having a second part connected with the first part made ...
Bone support device. US5318567. 20 Oct 1992. 7 Jun 1994. Olivier Vichard. Screw-on plate for treatment of fractures of the ... The implantable sensor can additionally be affixed to bone of the skeletal system such that it may monitor the bone, adjacent ... An implantable system for manipulating energy transferred by bones defining a joint, comprising: a first attachment structure ... An implantable system for manipulating energy transferred by bones defining a knee joint, comprising: a first attachment ...
Pedicle screws (140, 142, 148) may be implanted into pedicles of the spine, and may then serve as anchors for the extenders. ... in a manner that mimics the geometry of the pedicle screws (140, 142, 148) so that the selected or configured contoured rod ( ... 270) will properly fit into engagement with the pedicle screws (140, 142, 148). ... Fabrication of implantable bone fixation elements. US5720751 *. 27 Nov 1996. 24 Feb 1998. Jackson; Roger P.. Tools for use in ...
8, 1989 and entitled "Bone Screw".. A second surgically implantable member or rod 36 is illustrated in FIG. 2. The cylindrical ... Bone plate bender system. US8425574. Feb 16, 2011. Apr 23, 2013. Acumed, Llc. Bone fixation with a bone plate attached to a ... Multi-purpose bone plate system. US20070123867 *. Dec 14, 2006. May 31, 2007. X-Spine Systems, Inc.. Capless multiaxial screw ... Bone fastening plate. US20080312655 *. Jun 14, 2007. Dec 18, 2008. X-Spine Systems, Inc.. Polyaxial screw system and method ...
Trilogy bone screws: Zimmer issued a hazard alert and recalled some lots due to a manufacturing fault that could lead to ... St Jude implantable devices when used with the [email protected] transmitter: St Jude Medical issued a hazard alert for some of its ... Stuck screws a common cause. Reports to the TGA indicate that implant surgical tool breakages are often associated with ... St Jude Medical implantable neurostimulators and accessories: The TGA has issued a hazard alert advising that occipital nerve ...
The screwdriver includes a shaft adapted to hold a medical screw at its distal end, a motor adapted to rotate the shaft, and a ... A medical screwdriver for inserting a medical screw connected to a suture into a bone. ... Bone suturing device FR2811218B1 (en) 2000-07-05. 2003-02-28. Patrice Suslian. An implantable device intended to correct ... 24 to the bone with suture 38 already tied to the screw, suture 38 is tied to the screw after the screw is inserted to the bone ...
Antimicrobial Bone Screw Testing Against the Top Six CDC Antibiotic Resistant ... that has developed an antimicrobial technology for implantable medical devices such as orthopedic bone screws, reported today ... Silver Bullet Therapeutics Reports Results of OrthoFuzIon® Antimicrobial Bone Screw Testing Against the Top Six CDC Antibiotic ... This test demonstrated that the OrthoFuzIon Antimicrobial Bone Screw was able to significantly disrupt the development of ...
A bone fastener includes a proximal member having an inner surface that defines an implant cavity and an outer surface ... Implantable compression screws Citations (11). * Cited by examiner, † Cited by third party. Publication number. Priority date. ... The fasteners of the surgical system described herein may be employed as a bone screw, pedicle screw, mono-axial screw or multi ... Dissection type pedicle screw US20170020572A1 (en) * 2015-07-24. 2017-01-26. Warsaw Orthopedic, Inc.. Bone fixation element and ...
metal plates, wires, screws or rods - used during surgery for bone fractures ... an implantable cardioverter-defibrillator (ICD) - a similar device to a pacemaker that uses electrical shocks to regulate ...
An anchoring system implantable in bone. The anchoring system includes a screw having a screw head, a screw shaft, a plurality ... Modular polyaxial bone screw. A modular polyaxial bone screw that incorporates a threaded screw including a head portion and a ... A bone plate sized and shaped for fixation to one of a phalangeal and metacarpal bone includes a head extending from a first ... Bone fixation device for treatment of femoral fractures. A bone fixation device according to an exemplary aspect of the present ...
The material may be used in implantable devices such as bone fixation devices. ... 2. The medical device of claim 1 wherein the device is selected from the group consisting of a bone plate, bone screw, mesh, ... Oriented polymer implantable device and process for making same. US20050228386 *. 8 Abr 2004. 13 Oct 2005. Tara Ziolo. Bone ... Implant for bone reinforcement and for anchoring bone screws, implants and implant parts. ...
Small titanium screws secured the eyelid sling to the small bones of the eye. The sling was attached to a battery-operated ... Using cadavers, the surgeons inserted a sling made of muscle fascia or implantable fabric around the eye. ...
There is also interest in using PLA for plates and screws used to stabilize broken bones. The advantage to PLA implants is that ... For example, PLA is used as a coating for time-release pills and implantable drug delivery systems. If the rate at which PLA ...
Medical devices (orthopedic bone screws, implantable pumps, breast implants, and heart valves) ...
An implantable microphone device may include a housing including a diaphragm with the housing and diaphragm enclosing a chamber ... Two stage implantable microphone devices suitable for use in hearing systems are provided. ... the implantable microphone is placed against bone of the skull and may be attached to the bone (e.g., surgical screws). A shock ... One requirement for an implantable hearing device or system is an implantable microphone. Prior art implantable microphones for ...
The present invention relates generally to implantable bone screws and bone plates, and more particularly to a method and ... The method includes the step of securing a screw locating instrument to a bone screw. The bone screw is screwed into the bone ... a bone screw insertion assembly 222 may be used during the installation of the bone screws 212. The assembly 222 includes a ... 6 and 7). The screw locating instrument 14 is utilized to maintain a bone screw such as a hip lag screw assembly 22 (see FIG. 8 ...
Implantable article and method. US20020107525. 2 Feb 2001. 8 Ago 2002. American Medical Systems, Inc.. Powered bone screw ... In a further embodiment, the urethral prosthesis 10 may be secured in this position by screwing a bone screw proximal to the ... Alternatively, the urethral prosthesis may be secured to the superior or inferior pubic rami with a bone screw. ... Implantable article. US6652450. 27 Jul 2001. 25 Nov 2003. American Medical Systems, Inc.. Implantable article and method for ...
Claims to be the largest manufacturer of bone plates, screws and dental implants in Taiwan ... Initially provided molding and tooling equipment; now produces implantable devices under its own brand and to serve as OEM ... for use in the lumbosacral spine with autogenous bone graft and supplemental fixation; made of PEEK Optima, titanium alloy, ... indicated for use in the OR for placement of pedicle screws in lumbar vertebrae via posterior approach. ...
Cannulated polyaxial screw. A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ... The screw includes a threaded body... US-9,808,297. Bone fixation system with opposed mounting portions. System, including ... The present disclosure relates to an interference screw for creating an interference fit between a bone tunnel and tissue. ... A bone implant comprising an elongate body having a first end and a second end coupled by a shaft is disclosed. The first ...
... metastatic bone disease, osteolytic bone disease, post-plastic surgery, post-prosthetic joint surgery, and post-dental ... of the proteasome or both promote bone formation and are thus useful in treating osteoporosis, bone fracture or deficiency, ... Implantable devices of this type are routinely used in orthopedicsurgery. The films can also be used to coat bone filling ... The films may, for example, be wrapped around the outer surfaces of surgical screws, rods, pins, plates and the like. ...
Examples of passive implants: bone screws and metal plates used for plate osteosynthesis. Source: DGUV Informative publication ... implantable cardioverters and defibrillators) with a therapeutic function for ventricular fibrillation in addition to their ... Such implants include artificial joints and bone screws/plates; active implants such as cardiac pacemakers, defibrillators/ICDs ...
... particularly for improving intervertebral bone growth and improved surgical screw retention. The companys unique implantable ... The companys unique implantable system stimulates the bodys own repair mechanisms, resulting in bone fusion that is faster, ... OsteoVantages unique spinal instrumentation technology enhances bone formation at the site of implantation, thereby improving ... 30,000 to continue the development of a specially designed screw used in lower back fusion surgery. This award follows the ...
Scientists from Brown think they have discovered a way to make anodized titanium screws and other implantable orthopedic ... Scientists from Brown think they have discovered a way to make anodized titanium screws and other implantable orthopedic ... Nano-dized Titanium Spurs Faster Bone Growth. September 19th, 2007 Editors Nanomedicine, Orthopedic Surgery ... Press release: Bone-Growing Nanomaterial Could Improve Orthopaedic Implants. Link to abstract in Nanotechnology…. ...
  • An internal intramedullary fixation device for the stabilization of bone in arthrodesis and fractures of the foot and hand is disclosed. (patents.com)
  • OrthoHelix is an innovative, high growth, and EBITDA positive company that is focused on developing and marketing specialty implantable screw and plate systems for the repair of small bone fractures and deformities predominantly in the foot and ankle. (4-traders.com)
  • This method has been employed to treat a wide variety of bone defects including limb lengthening while correcting concurrent associated angular and rotational malalignments, transporting bone segments to fill fracture gaps, and healing non-union fractures. (aetna.com)
  • A set of at least two osteosynthesis plates (2g, h) is used for the implantation, anatomical repositioning and inner splinting of bone fragments, in particular following fractures of the distal humerus. (allindianpatents.com)
  • Osteosynthesis plates for implantation, anatomical reduction and internal splinting of bone fragments after fractures are widely known. (allindianpatents.com)
  • The screw body has an outer surface, and comprises polyether-ether-ketone (PEEK) material. (patentsencyclopedia.com)
  • We have developed an expertise with implantable PEEK and the full range of bioabsorbable materials, including biocomposites. (spectrumplastics.com)
  • The JUVORA dental disc is made entirely of implantable PEEK-OPTIMA™ polymer from Invibio Biomaterial Solutions. (victrex.com)
  • This implantable PEEK polymer possesses a number of outstanding properties, note the authors of the study, including biocompatibility, biostability, and compatibility with medical diagnostic imaging, that together indicate a favourable potential for metal replacement in dental prosthetics. (victrex.com)
  • While a preferred embodiment utilizes the completely implanted bone growth stimulator, the plate is effectively utilized with an external bone growth stimulator power supply and percutaneous cathodes inserted through positioning holes in the plastic insert of the fixation device. (patents.com)
  • This test demonstrated that the OrthoFuzIon Antimicrobial Bone Screw was able to significantly disrupt the development of biofilm. (businesswire.com)
  • The Company also announced that they will make the OrthoFuzIon Antimicrobial Bone Screw System commercially available to select institutions beginning this Fall in Europe. (spinalorthopedicnews.com)
  • If you have hearing loss due to sounds being blocked (conductive hearing loss) or are deaf on one side, you may benefit from a bone-anchored hearing aid (BAHA). (harboraudiology.com)
  • Surgical approaches to hold the BAHA processor include a magnet attached to your skull under your skin and a small abutment (screw) that provides a direct connection. (harboraudiology.com)
  • 2. The instrument assembly of claim 1 , said plate locating instrument is further adapted to be secured to said bone plate prior to implantation of said bone plate into a body of a patient. (google.com.au)
  • OsteoVantage's unique spinal instrumentation technology enhances bone formation at the site of implantation, thereby improving clinical outcomes. (prweb.com)
  • In this study, they describe the guide-screw system, its method of implantation, and their experience with establishing xenografts and delivering intratumoral therapy. (nih.gov)
  • To determine whether injections into the center of an established xenograft could be reproducibly achieved with the guide-screw system, an adenovirus vector containing the beta-galactosidase gene was injected 3 days after cell implantation in 15 of the mice. (nih.gov)
  • Describe the detailed surgical technique of BB-BCI implantation through a middle fossa approach with self-drilling screws and present preliminary audiometric outcome data following this approach. (biomedcentral.com)
  • The middle fossa technique with self-drilling screws is a safe and effective option for BONEBRIDGE implantation. (biomedcentral.com)
  • In principle, all considerations in the production of osteosynthesis plates were based on the object of forming the shape of these osteosynthesis plates for the implantation on the bone so that anatomically correct positioning and fixing of the osteosynthesis plate without the necessity of changes on the bone and with substantial protection of soft tissue are achieved. (allindianpatents.com)
  • The problem is that, despite preventive measures like the widespread use of vancomycin powder at the surgical site, there is no way to sterilize the screw-bone interface once implantation occurs. (spineuniverse.com)
  • Any contamination of pedicle screw before implantation is permanent and has the potential to cause deep-bone infection or hardware loosening due to encapsulation of biofilm between the bone and the screw," says Dr. Agarwal, Spinal Balance's director of research and clinical affairs. (spineuniverse.com)
  • With this in mind, today we embark on the first of our Evolution of Technology series , taking a look at the innovation history of hip replacement surgery and technologies, from the first femoral head attachments fashioned from ivory to current technologies which may enable surgeons to conserve more natural bone than ever before through the use of synthetic cartilage. (ipwatchdog.com)
  • The second angle can either be greater than the first with respect to an orientation perpendicular to a longitudinal axis of the bone plate, or less than. (justia.com)
  • Two weeks after achieving the target hyperglycemia, stainless steel fracture plates were secured to each femur with stainless steel screws approximately 3 mm in length. (duke.edu)
  • Our OrthoFuzIon coating creates a galvanic zone of bacterial inhibition surrounding the implanted screw within the body," said founder, President and CEO Paul Chirico . (businesswire.com)
  • OrthoHelix's strong growth is led by its MaxLock Extreme ® small bone screw and plate systems featuring proprietary anatomic contouring, low profile, and multiplanar fixation. (4-traders.com)
  • Research has shown the tight rope construct provides a more anatomic reduction than screws, and I believe the physiologic motion allowed by the tight rope allows more anatomic movement during ankle motion. (cyclonefanatic.com)
  • Fixation element for osteosynthesis membranes, bindable to a bone structure comprising a pliable laminated structure (1) that comprises a central plate (2) of an elongated geometry, which has a first free end (6), and a first fixation en. (sumobrain.com)
  • The two claimed osteosynthesis plates (2g, h) are provided with bore holes (3a, b, c) arranged or designed in such a way that the bone screws (12) which extend through them are oriented in various directions in space and the bone mass of the splinted bone (1) is thus crossed by bone screws (12) more completely than in the past. (allindianpatents.com)
  • A bone plate for osteosynthesis could be of a general type, which means that the bone plate is not adapted to a certain anatomical position, or it might be of a specific type, which means that the properties of the bone plate have been adapted in order to correspond to a specific type of an anatomical position. (allindianpatents.com)
  • For example, with the earlier bone plate and screw technology, the physician could only advance the screw along the pre-defined orientation of the threads in the bone plate. (justia.com)
  • The material is easily retrieved once bone growth is complete, and it remains intact as a single membrane to improve safety for the patient and limit errors and complexity during the procedure. (dit-usa.com)
  • Laminectomy - When nerve pressure caused by spinal stenosis is causing pain, the bone overlying the spinal canal can be removed during a surgical procedure called a laminectomy. (cprmc.com)