STENT SURFACE ANCHOR

摘要

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.