Stent surface anchor

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01)

Patent

CA 2202363

An endoprosthesis (10) is provided having an expandable, generally cylindrical body pon defining an inside surface (13) and an outside surface (12). The inside surface (13) is preferably regular and smooth to yield a low coefficient of friction, while the outside surface (12) is modified to yield a relatively high coefficient of friction with a vessel surface. The outside surface includes a macroscopic surface modification (17, 18) to engage the vessel surface, or includes an adhesive coating that bonds the stent to the vessel surface.

L'invention concerne une endoprothèse (10) possédant une partie corps dilatable et généralement cylindrique définissant une surface intérieure (13) et une surface extérieure (12). La surface intérieure (13) est, de préférence, régulière et lisse et possède, de ce fait, un coefficient de friction faible, tandis que la surface extérieure (12) est modifiée de façon à présenter un coefficient de friction relativement élevé avec la surface du vaisseau sanguin. Ladite surface extérieure comporte soit une modification macroscopique (17, 18) lui permettant de venir en contact avec la surface du vaisseau sanguin, soit un revêtement adhésif fixant l'extenseur à la surface dudit vaisseau.

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