Patent ID: 7083640
Filing Date: 2006-08-01
Classification: A61F,A61L

Abstract:
1. A flexible covered stent, comprising: a stent having a wall defining a luminal surface and an abluminal surface; a first tubular layer of expanded polytetrafluoroethylene, substantially covering said abluminal surface of said stent; a second tubular layer of expanded polytetrafluoroethylene having a length less than a length of said first tubular layer and covering a first region of said luminal surface of said stent, wherein said second layer is bonded to said first layer through openings in said wall of said stent; and a third tubular layer of expanded polytetrafluoroethylene, having a length less than a length of said first tubular layer and covering a second region of said luminal surface of said stent, wherein said third layer is bonded to said first layer through openings in said wall of said stent; wherein a third region of said luminal surface of said stent is located between said first and second regions of said luminal surface of said stent, said third region not being covered by either said second or said third tubular layer.