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http://www.ipcalculus.com info@ipcalculus.com Overview 2011 © IPCalculus Services Stent is wired tubular structure with balloon expansion or self expansion capability made up of metal or fabric. Stent is used to restore blood flow through narrowed or blocked arteries. Another application of stent is to improve blood flow and to prevent the weakened artery from bursting. Stent is used in coronary arteries, central and peripheral arteries and veins, bile ducts, esophagus, colon, trachea or large bronchi, ureters, and urethra. In the early 1990’s bare metal stents were developed. This was pioneered by Julio Palmaz, a physician-inventor. The bare metal stent was a huge leap forward in treating the problem of restenosis. Like angioplasty, the stent is inserted percutaneously through the femoral artery and then is expanded in the coronary vessel. Having the stent in place, holding open the artery, decreased the restenosis rate to roughly 20-25% instead of 40%. In the late 1990’s the first drug eluting stents (DES) were developed as a solution to the problem of restenosis. Drug eluting stents are now replacing conventional stents as the dominant therapy for coronary artery disease. In 2004, DES was estimated to reach utilization in 87% of all angioplasty procedures, an amazing penetration rate given DES had only been launched one year earlier. DES has already achieved a 0% restenosis rate in many cases. Recently bioabsorbable stents are used widely because they disappear after time and foreign substance will not remain in the body. Bioabsorbable stents would be less invasive because they disappear after time and the foreign substance will not remain the body.

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http://www.ipcalculus.com info@ipcalculus.com About IPCalculus IPCalculus is an Intellectual Property research & analytical consulting firm based in India, providing customized services in the form of Patent landscape analysis, Patent portfolio analysis, Patent searches (Prior-art, Patentability/Novelty, Invalidation, Infringement, and Freedom to Operate), Patent alert and monitoring, Legal status updates, Trend analysis, Patent to Product mapping and Patent licensing. Our expertise lies in generating valuable IP intelligence by analyzing patent, non-patent, product, clinical trial, regulatory filing, premarket approval, recalls and other technical & competitive information. Our customized, interactive, dynamic & collaborative reporting system "IP Analytics Manager" integrate patent, non-patent, product, clinical trial, regulatory filing, premarket approval, recalls and other technical & competitive information. We provide consistent high quality IP research & analytical services in the field of medical devices, pharmaceutical, healthcare, biotechnology, life sciences, electronics, telecommunications, FMCG, chemistry, mechanical and many more. 2011 © IPCalculus Services

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