A process for treating a chromium coating and/or the surface of a chromium alloy to increase hardness, and/or to decrease coefficient of friction; chromium alloys and/or chromium coatings with surfaces having increased hardness and/or decreased coefficient of friction; and, components comprising chromium alloys and/or chromium coatings with surfaces having increased hardness and/or decreased coefficient of friction.

Research Report on Global Cobalt Chromium Coronary Stent Market Research Report 2016. The Report includes market price, demand, trends, size, Share, Growth, Forecast, Analysis & Overview.

Hong Kong based OrbusNeich has announced the European launch of their Genous Bio-engineered Cobalt Chromium Stent, which supposedly accelerates the

Buy 30mmx40mm Chromium Alloy Steel Medium Load Die Spring Red from sourcingmap，you can get reasonable price and fast response worldwide. Please be assured all the products here are quality garanteed.

Use MacRaesBlueBook.com for accurate listings of Chromium Alloys Manufacturers in Florida. See contact details and Send a Request for Quotations.

iVascular Architect Coronary Stent is a stent made of a Cobalt Chromium alloy called L605. See IFUs for further information. Available to download.

Supplier of Metals, Alloys, Ceramics, Polymers, Compounds, Intermetallics & Composites for research & industrial markets. View our small quantity Catalogue.

Both the spin- and charge-density waves of Cr alloys are produced by the Coulomb attraction between electrons and holes on nearly nested Fermi surfaces. Driven by quasi-particle transitions, transverse spin- wave and longitudinal phason modes are associated with rotational and translational symmetries of pure Cr and its dilute alloys. At low frequencies, both spin and charge phasons have a nearly linear dispersion with a mode velocity which approaches the spin-wave velocity as T approaches T{sub N} or as the mismatch between the Fermi surfaces increases.

PMID: 16752620 Purpose: This study aimed to investigate the release of nickel, copper, zinc, cadmium, magnesium, and lead from prosthodontic base metal alloys into protein-containing biologic solutions. Materials and Methods: Dissolution experiments were conducted in either 3% Dulbecco s Modified Eagle Medium or 3% bovine serum albumin solutions for 7 weeks. Results: The protein-containing dissolution solutions and dissolution time did not have a significant effect on release of elements from the alloys (Kruskal-Wallis, P > .05). Conclusions: The amount of the released elements was well below the dietary intake levels of these elements. This study is important given the widespread use of the base metal alloys and the continuing public concerns/questions regarding the health benefits/risks associated with these materials. Int J Prosthodont 2006;19:250 252 ...

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This first-in-human study was designed to examine the temporal patterns of tissue healing and the proof-of-concept for restoration to a BMS. We chose 4 months post stent deployment as the first assessment point because the polymer coating is completely absorbed at ∼3 months. Repeated imaging at 6, 8, and 18 months allowed a detailed assessment of the tissue strut coverage, strut malapposition, positive remodeling, and other changes that have been associated with some of the durable polymer DES.. Our study confirmed, up to 18 months, the preliminary safety and efficacy of the cobalt chromium thin-strut MiStent SES, from which a poly lactide-co-glycolic acid polymer coating is absorbed in 45 to 60 days. Crystalline sirolimus is delivered locally in sustained, therapeutic concentrations up to 6 months, without initial burst. The small angiographic in-stent LLL at each time point, along with the low neointimal volume obstruction on IVUS, indicates stent efficacy. Of particular interest, and in ...

Global Therapeutics, the cardiology unit of Cook Medical, has receivedCE Mark approval for its new cobalt chromium bare metal coronary stent(BMS), the GTX coronary stent system, which will be availableimmediately in the European Union and the United Kingdom.

MedJ-01 Ridaforolimus Eluting Coronary Stent System is a single use device/drug combination product comprising: - A mounted Cobalt Chromium (CoCr) alloy based

CE-certified metal material for series production. For manufacturing crowns and bridges, the EOSINT M 270 processes a special cobalt chromium molybdenum-based superalloy. It is biocompatible and CE-certified for use in the dental industry (CE 0537). This established dental prosthesis material has seen considerable demand in recent years and is very cost-efficient compared to precious metal alloys. The Schwickerath bonding strength according to EN ISO 9693 using recommended VITA VM13 ceramic is 42 MPa. The amount of extractable ions released from EOS CobaltChrome SP2 laser processed according to Instructions for Use is 1.86 mg / cm2 / 7 days determined in the static immersion test according to EN ISO 10993-15.. Benefits. ...

The Carpentier-Edwards Bioprosthetic Valved Conduit (Model 4300) is made from a porcine (pig) aortic valve that has been preserved and mounted on a flexible frame. The flexible frame is composed of a corrosion resistant cobalt chromium metal alloy, silicone rubber, and is covered with polytetrafluoroethylene (PTFE) cloth. The valve is then mounted in a polyester tube. This device can be used to create an extra-cardiac pathway for blood flow in the pulmonic position. This conduit was introduced in the 1970s. ...

Announcing Perseus Open Archives Initiative Services (6 May 2002) The Perseus Project is pleased to announce the first release of its Open Archives Initiative service provider. The Perseus system harvests registered OAI repositories and incorporates the information into its search interface (http://www.perseus.tufts.edu/cgi-bin/vor). Some sample searches: - search for Shakespeare, grouped by collection. Note that not all resources have web-accessible content. http://www.perseus.tufts.edu/cgi-bin/vor?lookup=Shakespeare;group=collcat;extern=1 - search for cloning, dynamically clustered by repeated phrases. Note the different phrases associated with cloning: molecular cloning, amino acid, quantum information. http://www.perseus.tufts.edu/cgi-bin/vor?lookup=cloning;group=stcluster;extern=1 - search for Goethe, grouped by matching field. Books by Goethe are separated from information about Goethe. http://www.perseus.tufts.edu/cgi-bin/vor?lookup=Goethe;group=fieldcat;extern=1 For documents ...

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Of 287 patients who otherwise met inclusion criteria, 200 (70%) either demonstrated RF or had radiographic imaging obtained at a minimum of 1 year after surgery showing lack of RF. The patients mean age was 54.8 ± 15.8 years; 81% were women; 10% were smokers; the mean body mass index (BMI) was 27.1 ± 6.5; the mean number of levels fused was 12.0 ± 3.8; and 50 patients (25%) had a pedicle subtraction osteotomy (PSO). The rod material was cobalt chromium (CC) in 53%, stainless steel (SS), in 26%, or titanium alloy (TA) in 21% of cases; the rod diameters were 5.5 mm (in 68% of cases), 6.0 mm (in 13%), or 6.35 mm (in 19%). RF occurred in 18 cases (9.0%) at a mean of 14.7 months (range 3-27 months); patients without RF had a mean follow-up of 19 months (range 12-24 months). Patients with RF were older (62.3 vs 54.1 years, p = 0.036), had greater BMI (30.6 vs 26.7, p = 0.019), had greater baseline sagittal malalignment (SVA 11.8 vs 5.0 cm, p = 0.001; PT 29.1° vs 21.9°, p = 0.016; and pelvic ...

These options allow for variability in leg size, offset and Model. Femoral heads are created of steel or ceramic product. Metallic heads, fabricated from cobalt chromium for hardness, are machined to sizing and after that polished to lower use in the socket liner. Ceramic heads tend to be more sleek than polished metal heads, have a reduced coefficient of friction than the usual cobalt chrome head, and in principle here will have on down the socket liner more slowly and gradually. As of early 2011, abide by up experiments in people havent shown major reductions in have on rates in between the various kinds of femoral heads in the marketplace. Ceramic implants are more brittle and may break following becoming implanted ...

Currently available stents were designed for straight lesions, optimised to provide scaffolding (coverage and radial strength) and ease of deliverability. In straight lesions, these stents have been shown to provide superb acute and long-term results. One lesion subset that continues to challenge the interventionalist is bifurcations lesions. A number of different strategies have been employed with standard stents to address bifurcation lesions each of which have significant limitations. Large contemporary registries characterising current stent usage in bifurcating lesions have demonstrated decreased procedural success with increased rates in restenosis and thrombosis (acute, subacute and delayed). The limitations of currently available stents have led groups to develop stents designed specifically to treat bifurcation lesions. The Tryton Side-Branch Stent Stent TM (Tryton Medical, Inc., Newton, MA, USA) is a balloon expandable cobalt chromium stent, designed specifically to treat bifurcation ...

Health,Sacramento CA (PRWEB) March 21 2013 Whether hip patients have a concern over a Stryker Hip DePuy Hip or any other hip device currently on the market or that has been recalled people who Google Cobalt Chromium Toxicity continue finding that a href http://www.Cobalt-Chromium-Toxicity.com title Cobalt Chromium Toxicity Resource Center onclick linkClick,Ongoing,Litigation,Over,Failed,DePuy,and,Stryker,Hip,Implants,Continue,Driving,Traffic,to,Number,One,Website,for,Cobalt,Chromium,Toxicity,Information,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news

Sahajanand Medical Technologies (SMT) has announced that it has received CE Mark for its next-generation Supraflex stent system called Supraflex Cruz.. Supraflex Cruz is a sirolimus-eluting stent built on a cobalt chromium platform having implanted in more than 2,50,000 patients in India and in selected international markets over the last 3 years.. The stent design provides ultrathin strut thickness (60 microns for all diameters and lengths), a blend of proprietary biodegradable polymers to release the drug, very thin layer of polymers, high radial strength and low crossing profile.. Supraflex Cruz has undergone multiple clinical studies including the most advanced OCT studies (Sibi and Taxco OCT study) showing healing pattern post-deployment of the stent.. Sibi OCT study demonstrated that Supraflex Cruz had close to 91% endothelialisation in 35 days. In the Taxco study, the stent was compared with market leading Everolimus-eluting stent in a head to head comparison at 6 months. The study showed ...

Copra J. D. , Elsevier Science Ltd. London: 461-488, 1999 4. Thomas P: Allergological aspects of implant biocompatibility. In: Bioceramics in hip joint replacement (eds. Wlllmann G, Zweymuller K), Thieme Stuttgart New York: 117-121, 2000. 5. : Immunologic mechanisms in hypersensitivity reactions to metal ions: an overview. Allergy. 55: 108-115, 2000. 6. : Distribution of cobalt chromium wear and corrosion products and biologic reactions. Clin. Orthop. Rel. Res. 329: S233-S243, 1996. 7. Wever D. Moloney W. , Goodmon S. , Schurmon D. , Snnith R. : Humon serum opsonizotion of orthopaedic biomoteriol particle proteinbinding and monocyte/macrophage activation In vitro. J. Biomed. Mater. Res. Willert H. , Buchhorn G. , Lohmann C. : Histopothoiogische Verdnderungen bei Metal! / Metoil-Gelenken geben Hinweise out eine zellvermittelte Uberempfindlichkelt - vorldufige Untersuchungsergebnlsse von 14 Fallen. Osteologie 9, 165-179,2000. : IL-12 as an adjuvant for cell mediated Immunity. Semin. Immunol. ...

The Modular Revision Hip Stem,Cementless hip stem revisions offering optimal version setting for each patient. Compatible with modular link ceramic or cobalt chromium femoral heads with up to 4 neck lengths, or the link saddle device.,medicine,medical supply,medical supplies,medical product

TCT 2013 presentation of data planned -. DURHAM, N.C., September 30, 2013 - Micell Technologies, Inc. today announced that a peer reviewed article discussing imaging and clinical results of the DESSOLVE I trial of its MiStent Sirolimus Eluting Absorbable Polymer Coronary Stent System (MiStent SES®) was accepted for publication on the JACC Cardiovascular Interventions website. The paper, First-in-Human Evaluation of a Bioabsorbable Polymer-Coated Sirolimus- Eluting Stent: Imaging and Clinical Results of the DESSOLVE I Trial (DES With Sirolimus and a Bioabsorbable Polymer for the Treatment of Patients With De Novo Lesion in the Native Coronary Arteries), is planned to also appear in the October 2013 issue of JACC Cardiovascular Interventions.. The article concluded that, upon 18 months follow-up, the MiStent SES - an absorbable polymer-coated, cobalt chromium, sirolimus-eluting stent - was associated with a low and stable in-stent late lumen loss, complete strut coverage, and no stent ...

The common component in both systems-and what is at the heart of the lawsuits-is the Conserve cup, which is a cast cobalt chromium molybdenum piece that holds the metal femoral head, mimicking the natural movement of a hip joint. It is that unlined cobalt part that is allegedly causing serious harmful effects to patients who receive the implant device. The problem is that these two metal components cause the release of metal particles around the hip joint and surrounding tissue. As a result, a high percentage of patients have developed metallosis and biologic toxicity and are experiencing a high and early failure rate of the device ...

Blueacre Technology can machine complex profiles to create a range of implantable devices. Our femtosecond processing capability ensures that we can cover the widest range of materials commonly used in stents, i.e. nitinol, cobalt chromium and stainless steel. Femtosecond laser technology is also ideal for machining of platinum iridium marker bands without burr. For larger implantable devices our 10 axis Swiss CNC capability adds a new dimension of processing. ...

Expandable Stent System. The TALON Minor 6F Peripheral Balloon Expandable Stent System is a flexible, cobalt chromium stent mounted on an over-the-wire PTA balloon catheter.. It is designed for use in peripheral vessel diameters from 5.0 mm to 10.0 mm. The TALONMinor 6F is mounted on an 0.035 delivery system and is available in a full range of diameters and lengths with a shelf life of 2 years. The TALONMinor 6F Peripheral Balloon Expandable Stent System ...

LFI Medical offers laser-cutting services for metals in a variety of forms, including tube based, flat, and multi-axis designs. Our efficient systems are capable of cutting tightly toleranced, intricate patterns with industry best lead times for development programs through high volume production. We are able to cut a variety of materials including stainless steel, nitinol, cobalt chromium, titanium, Inconel, and platinum ...

Inclusion Criteria:. - AMI definition is accordance with the third universal definition of ESC /ACCF/ AHA/ WHF Task Force10, detection of a rise and/or fall of cardiac biomarker values [preferably cardiac troponin (cTn) I or T] with at least one value above the 99th percentile upper reference limit (URL) and with at least one of the following: Symptoms of ischemia. New or presumed new significant ST-segment-T wave (ST-T) changes or new left bundlebranch block (LBBB).. Development of pathological Q waves in the ECG. Imaging evidence of new loss of viable myocardium or new regional wall motion abnormality.. Identification of an intracoronary thrombus by angiography or autopsy Of the AMI patients who met the above definition, the criterial for inclusion is limited to STEMI patients. STEMI is defined as new ST elevation at the J point in at least 2 contiguous leads of equal or greater than2 mm (0.2 mV) in men equal or greater than1.5 mm (0.15 mV) in women in leads V2-V3 and/or of equal or greater ...

Dental Gold and Gold Alloys. Gold, the most noble of metals, seldom tarnishes or corrodes in the oral cavity. Because of the softness of pure gold, it is not indicated for use in the mouth except in the form of gold foil. Gold is frequently used in combination with other metals to produce alloys that can be used to fabricate various types of dental restorations where metal is indicated. The basic types of gold alloys used in dentistry are casting gold, gold solder, wrought gold, and gold plate. The principal metals used to combine with gold to form the alloys are silver, copper, platinum, palladium, and zinc. ADMINISTRATIVE CONTROL Controlled items subject to strict accountability and safeguarding are gold solder, platinum foil, and gold, silver, and chromium alloys. In addition, scrap from these controlled items and from amalgam are also subject to the same controls. Certain delegated members of a dental facility control these items. However, all members of the dental care system must be aware ...

Nickel Alloy 22 is a fully austenitic, nickel-chromium-molybdenum-tungsten alloy with high corrosion resistance compared to other nickel-chromium alloys

Cobalt-chromium alloy (Co-Cr) particles in the nanometre size range are produced by wear at the articulating surfaces of metal-on-metal implants, and are associated with inflammation, bone loss and implant loosening. Additionally, metal implants undergo corrosion inside the human body releasing ions into the surrounding tissue. This led to the withdrawal from the market of the DePuy ASR™ metal-on-metal hip replacements in 2010. Ions released from Co-Cr particles derived from a resurfacing implant and their subsequent cellular up-take have been measured. Moreover, the ability of the metal debris and Cobalt (Co) ions to induce apoptosis was examined. For this purpose, U937 cells and Co pre-treated U937 cells were exposed to Co, metal debris and Co + debris for 24 and 48 h. To measure metal ion concentrations in culture medium and cell lysates Inductively Coupled Plasma Mass Spectrometry (ICP-MS) analysis was performed. Apoptosis was evaluated with Fluorescence-Activated Cell Sorting (FACS) and ...

This study compared the particulate and ion forms of a cobalt-chrome (Co-Cr) alloy on the differentiation/activation of preosteoblasts. Mouse preosteoblasts (MC3T3-E1) were cultured in an osteoblast-induction medium in the presence of particulate and ion forms of a Co-Cr alloy, followed by cell proliferation and cytotoxicity evaluations. The maturation and function of osteoblasts were assessed by alkaline phosphatase (ALP) assay and related gene expressions. Both particulate and ion forms of the metals significantly reduced the proliferation of MC3T3-E1 cells in a dose-dependent manner. Similarly, cells challenged with high concentrations of particles and ions exhibited a marked cytotoxic effect and diminished expression of ALP. Real-time (RT) polymerase chain reaction (PCR) data have suggested that cells with Co-Cr particles dramatically promoted over-expression of monocyte chemo-attractant protein-1 (MCP-1), tumor necrosis factor- (TNF-), and interleukin-6 (IL-6), whereas Co2+ ions treatment ...

Alloy 601, a nickel-chromium alloy, provides resistance to many corrosive media and high temperature environments. The addition of aluminum enhances the…

To establish the methods of demonstrating early fixation of metal implants to bone, one side of a Cobalt-Chromium (CoCr) based alloy implant surface was seeded with rabbit marrow mesenchymal cells and the other side was left unseeded. The mesenchymal cells were further cultured in the presence of ascorbic acid, β-glycerophosphate and dexamethasone, resulting in the appearance of osteoblasts and bone matrix on the implant surface. Thus, we succeeded in generating tissue-engineered bone on one side of the CoCr implant. The CoCr implants were then implanted in rabbit bone defects. Three weeks after the implantation, evaluations of mechanical test, undecalcified histological section and electron microscope analysis were performed. Histological and electron microscope images of the tissue engineered surface exhibited abundant new bone formation. However, newly formed bone tissue was difficult to detect on the side without cell seeding. In the mechanical test, the mean values of pull-out forces were 77.15 N

Radial strength and low recoil are particularly important in bare-metal stents as Target Lesion Revascularization (TLR) rates are generally higher than drug-eluting stents. The Platinum Chromium Alloy combined with the REBEL customized architecture stent design allows for high radial and axial strength and the lowest stent recoil.

Stryker announced a new voluntary recall involving certain Stryker LFIT V40 cobalt-chromium femoral heads that are used in total hip replacement procedures.

Colorization by anodizing is widely spread in the medical field, but is limited to titanium and aluminum components. In that sense, ALD technology is highly innovative as it can bring color to any material such as stainless steel, nitinol, and cobalt-chromium alloys. Colorization of medical instruments and devices enables clear and reliable identification to avoid mistakes during the operating steps. This has the huge advantage of reducing the stress for clinicians and improving the safety for patients. From a commercial point of view, in our fast paced environment, colorization by ALD NanoDeCo® coatings is a powerful marketing tool to distinguish products from competitors in the same field or to address specific markets. ...

Gertrude Emma Barrett born 1868 married Walter Costar on 23rd December 1888.. The 1891 census shows Walter age 24 and a Game-keeper and Gertrude with 2 children, Lizzie age 1 and Christopher age 8 months, living at Denmans Farm, Chawley, Cumnor, Berkshire.. The 1901 census finds Gertrude, now 32, living with her parents in Tubney. So, where is Walter? He is at 5 Station Road, Stratfield Mortimer, and is a coachman and hotel groom. Children: Lizzie age 11 Christopher age 10 Gertrude age 9 Walter Henry age 6 Frederick age 5 Annie age 3 Sydney age 1. Also there is Ellen, sister-in-law age 22 and described as housemaid.. Why is Gertrude with parents and Ellen with Walter and children? A thought for investigation, which surrounds a letter from one Nellie Costar to great grandfather Harrys wife Annie (Mary Anne Chandler). because the author of the letter is one Nellie Costar, I had assumed initially that it was written by Gertrude as her married name was Costar. However, Gertrudes middle name was ...

Posted by Becca on Jun 6, 2019 in Fun Stuff, Iron Souls , 0 comments Its almost release day! Caught in Crystal, the anthology that includes my novella Iron Tears, goes live tomorrow. So Ive got time to squeeze in one more character interview. As promised, Perseus is next up for the hot seat. Our Scourge warrior doesnt say a whole lot, though he has warmed up recently. Hopefully, he wont be too quiet today. Without further ado, I give you Perseus. Becca: Do you have a last name or title I should add? Perseus: No. Perseus is fine. Those who know me dont require more. Becca: (smiles) It is a unique name and you do seem to have a certain reputation-within the ferromancer race and beyond. But with regard to the name, youve admitted youre immortal and- Perseus: If its all the same, Id rather not go into that. There are those I havent been open with and if word got back that I told you… Becca: Um, you cant be open with me? Perseus: It was my understanding that this conversation would be ...

Aldar Properties announced the launch of Noya Viva, the next phase of its highly successful Noya development on Yas Island. The community is open for buyers from all nationalities to purchase their... | September 19, 2021

The aim of this investigation was to describe a new adaptation of the ST2R technique as reported by Clement et al.10 for thoracic hypokyphotic AIS patients. We focused on whether the ST2R technique would improve the TK apex location and outcomes relative to a case-matched cohort treated with RR.. However, one limitation of our study is the discrepancy of rods used in the RR and ST2R maneuvers, i.e., the 5.5-mm titanium versus the 6.0-mm cobalt-chrome alloy rods, respectively. This discrepancy is primarily due to the retrospective nature of the study and the consequential change in materials used over time in our practice. As such, outcome differences between the two techniques may be in part explained by the differences in the rods applied. Nevertheless, the roles of the rods in the RR and ST2R techniques are inherently different. RR uses a single rod to support a rotational correction of the spine at the concavity side, while a second rod is placed after the correction to provide support to ...

Corning™ Costar™ Cell Culture Triangular Flasks 75cm2 Growth area; Phenolic Cap Corning™ Costar™ Cell Culture Triangular Flasks...

TY - JOUR. T1 - Nanogranulation process into magnetoresistant Co-Cu alloy on the route of bulk mechanical alloying.. AU - Aizawa, T.. AU - Zhoh, C.. PY - 1800. Y1 - 1800. M3 - Article. VL - A285 (2000). SP - 1. EP - 7. JO - Materials Science and Engineering.. JF - Materials Science and Engineering.. ER - ...

Objective: The composition of the salivary interface (pellicle) between dental restorations and oral mucosa may be critical to the biocompatibility of the restoration. The purpose of this study was to examine the molecular composition of the salivary pellicle on nickel-chromium alloy in vivo. Method and materials: The molecular components of nickel-chromium pellicle was examined with sodium dodecyl sulfate polyacrylamide gel electrophoresis and Western blot analyses. Results: Only limited numbers of salivary proteins were found to participate in the formation of nickel-chromium pellicle in vivo. Salivary amylase and secretory immunoglobulin A were among the proteins identified in the pellicle. Conclusion: In vivo, nickel-chromium pellicle consists of selectively adsorbed salivary proteins. Because both salivary amylase and secretory immunoglobulin A are antimicrobial proteins, it is possible that they play a role in modulating the microbial flora on the nickel-chromium prosthesis ...

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Finlay presents treatment of a patient with high aesthetic demands using immediate partial dentures, followed by metal based partial dentures supported with crowns. This is practical and clinically useful; abundantly illustrated with photographs and videos showing how Finlay and his dental technician, Rowan Garstang, produce removable dental prostheses. The lecture aims to show how we can change our patients lives with beautifully made dentures.. Learning objectives:. 1. To learn how to make accurate impressions. 2. To learn how to make partial dentures fit perfectly. 3. To learn how to incorporate crowns into a partial denture. 4. To learn a new system of partial denture design, including planning for future support teeth failure by designing the cobalt chromium minor connectors with tooth additions in mind.. 5. To see the management of challenging cases where implants are not wanted/indicated. 6. To appreciate that good quality removable dentures are a valid alternative to implant supported ...

Everolimus-eluting stents (EES) represent the next generation of drug-eluting stents (DES). Important design modifications include thin strut stent backbones, less inflammatory and more biocompatible polymers, and lower drug dosing. The cobalt chromium EES fluoropolymer XIENCE V stent has been the most extensively studied of such stents. In animal models, this stent demonstrated minimal vessel inflammation, a biologically active endothelium with strut coverage similar to a bare metal stent, and inhibition of intimal hyperplasia comparable to that seen with sirolimus-eluting stents. The SPIRIT family of clinical trials demonstrated low rates of late loss, and clinical restenosis, as well as low rates of very late stent thrombosis. These excellent clinical outcomes addressed limitations of the 1st generation DES, and substantiated widespread clinical use of the EES platform.

Implantable materials or biomaterials are utilized to repair, assist or replace living tissue or organs that are functioning below an acceptable level. A wide range of metals and their alloys, polymers, ceramics and composites are used in surgically implanted medical devices and prostheses and dental materials. These are important materials that provide the best dental implantations for patients. Most implanted devices are constructed of more than one kind of materials. Since the early 1900s, metal alloys have been developed for these applications to provide improved physical and chemical properties, such as strength, durability and corrosion resistance.. Major classes of metals used in medical devices and dental materials include stainless steels, cobalt-chromium alloys and titanium (as alloys and unalloyed). In addition, dental casting alloys are based on precious metals (gold, platinum, palladium or silver), nickel and copper and may in some cases contain smaller amounts of many other ...

Many of the metallic implants used in orthopaedics are made of stainless steel or cobalt-chromium alloys which contain 18-30% chromium. Hexavalent chromium (Cr VI) has been shown to be the predominant form of chromium released following in vivo and in vitro corrosion of these metal implants (Merritt and Brown, 1995 K. Merritt and S.A. Brown, J. Biomed. Mater. Res. 29 (1995), pp. 627-633. Full Text via CrossRef , View Record in Scopus , Cited By in Scopus (67)Merritt and Brown, 1995). Blood chromium levels may be elevated between 50 and 250 times in patients with metal hip implants (Lhotka et al., 2003). At physiological pH, Cr (VI) exists predominantly as the chromate anion and as such can enter cells via non-specific anion channels. The anionic Cr (VI) diffuses readily through the red blood cell (RBC) membrane and is bound by the haemoglobin probably after its rapid reduction to the cationic trivalent state within the RBC (Gray and Sterling, 1950). The aims of this study were to investigate the ...

Definition : Hook prostheses operated by myoelectric power and designed for partial functional replacement of a missing hand. These prostheses are typically external devices made of metal (e.g., cobalt-chromium alloys), hard plastics (e.g., polyethylene), carbon fibers, or a combination of materials; they may include totally or partially implanted components (e.g., sensors, electrodes). The prostheses are usually fixed with a socket to the wrist and require some degree of customization. Myoelectric controlled hand prostheses typically incorporate small electrical motors and electrodes within the socket to pick up electrical signals that trigger hook operation as the muscles in the residual limb contract. They may be used alone as a replacement for a missing hand or as the terminal component of a below-the-elbow, above-the-elbow, or total upper limb prosthesis in patients who have congenital abnormalities or who suffered amputations due to illness (e.g., diabetes) or traumatic accidents.. Entry ...

For successful wetting, the base metal must be at least partially soluble in at least one component of the brazing alloy. The molten alloy therefore tends to attack the base metal and dissolve it, slightly changing its composition in the process. The composition change is reflected in the change of the alloys melting point and the corresponding change of fluidity. For example, some alloys dissolve both silver and copper; dissolved silver lowers their melting point and increases fluidity, copper has the opposite effect. The melting point change can be exploited. As the remelt temperature can be increased by enriching the alloy with dissolved base metal, step brazing using the same braze can be possible. Alloys that do not significantly attack the base metals are more suitable for brazing thin sections. Nonhomogenous microstructure of the braze may cause non-uniform melting and localized erosions of the base metal. Wetting of base metals can be improved by adding a suitable metal to the alloy. ...

CORITEC COCR DISC (NON-PRECIOUS ALLOY) COCR DISC Range of applications Single caps Single crowns Bridges up to 16 units, full bridges, and PFM technology Cone and telescopic technology Primary and secondary components Implant constructions Adhesive bridges Properties Outstanding mechanical features Very good thermal

Current location in this text. Enter a Perseus citation to go to another section or work. Full search options are on the right side and top of the page ...

Current location in this text. Enter a Perseus citation to go to another section or work. Full search options are on the right side and top of the page ...

According to Motilal Oswal, Base metals have been on a roll for much of 2021 and metals which were under dogs in 2020 are the ones leading the pack.

BGC is a leading non-proprietary, inter-dealer broker (IDB) for base metals traded on the London Metal Exchange (LME) and CME/Nymex. By offering clients an execution-only service, we can source competitive quotes from across the market and provide a high degree of anonymity. We provide traditional voice brokerage services, as well as direct market access (DMA) screens to our clients.. ...

Dissecting the markets current action, why base metals are higher, and whether there is panic in the bond market, with Jeff Kilburg, KKM Financial, and Jim Iuorio, TJM Institutional Services.

Base metals were boosted on Wednesday as equity markets headed higher, with copper rising 1.6 percent, but analysts said the sentiment remained vulnerable.

Effect of Ni addition on the microstructures of melt-spun CuCr ribbons. YU, M.; WANGI, Y.; WANG, Y.; SUN, Z. // Materials Science (0137-1339);2008, Vol. 26 Issue 3, p675 The microstructures and resistivities of melt-spun Cu75Cr25 and Cu(75-x)Cr25Nix (x = 1 or 3 wt. %) ribbons were studied. The size of the Cr-rich phase from liquid phase separation in the Cu75Cr25 microstructure can be decreased from the micrometer-scale to about 250 nm by using melt spinning.... ...

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Corning® Costar Clear Polystyrene 96-Well Plates conform to standard microplate footprint and dimensions. They are available with two surface types:. Tissue Culture-Treated Plate EF5354C has a treated surface for optimal cell attachment. Non-Treated Plates have a medium-binding polystyrene surface that is hydrophobic in nature and binds biomolecules through passive interactions. It is suitable primarily for the immobilization of large molecules, such as antibodies, that have large hydrophobic regions that can interact with the surface.. All plates except EF5354H include a non-reversible lid with condensation rings to help reduce contamination. Recommended working volume: 75-200 µL. ...

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Tom Holland made it through Avengers: Endgames release without spoiling the ending for viewers, but his Spider-Man: Far From Home co-stars werent so lucky.

Though she left the show in 2014, Sherri Shepherd exclusively revealed to Closer Weekly that she still keeps in touch with her former The View costars.

Rising star Shia LaBeouf was spotted indulging in a little flirtation with his co-star Megan Fox while on set of the Transformers sequel.

Find out what people are saying about the strange alerts astrology app Co-Star has been sending lately, and why some people love it.

The Young and the Restless actress Michelle Stafford pens touching tribute to departing co-stars Hunter King and Michael Mealor.

Safety concerns with 1st generation of bioabsorbable vascular scaffolds(BRS) have prompted the development of next generation of these devices, focused on thinner struts and faster resorption time. Recently developed, the MeRes100 (Meril Life Sciences) is a sirolimus-eluting (1.25 mg/mm2) BRS, which is built of a thin-strut (100mm) PLLA polymer with a hybrid cell design (closed cells on the edges and open cells on the center). There are couplets of tri-axial radiopaque markets at either end to facilitate scaffold positioning and post dilation. Bioresorption is expected to occur within 2 years.We sought to evaluate the performance of this device in the treatment of real-world, less selected patients. ...

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