Method of securing a thin-wall intraluminal graft
 A method of securing an intraluminal vascular graft within a living body, the intraluminal vascular graft being in the form of a tube of porous expanded polytetrafluoroethylene film wherein the porous polytetrafluoroethylene film has a microstructure containing a multiplicity of fibrils oriented substantially parallel to each other. The tube has a wall thickness of less than about 0.25 mm and is made from at least one first layer and at least one second layer of porous polytetrafluoroethylene film, wherein the fibrils of the first and second layers are oriented substantially perpendicular to each other. Preferably the fibrils of the at least one first layer are oriented substantially parallel to the longitudinal axis of the tube and the fibrils of the at least one second layer of porous polytetrafluoroethylene film are oriented substantially circumferential to the tube. The first and second layers may be inner and outer layers respectively, or alternatively their relationship may be reversed. Alternatively, either of the first and second film layers may be replaced with alternative reinforcing components such as a braid or at least one reinforcing rib. 
W. L. Gore & Associates, Inc.
A F Y Y Y A A Y B B A B Y B B B Y Y Y Y B B Y Y A A A B B A Y A
A61L F16L Y10T Y10T Y10T A61F A61L Y10T B29L B29C A61L B29K Y10T B29C B29K B29C Y10T Y10T Y10T Y10T B29L B29C Y10T Y10T A61F A61L A61F B29K B29C A61B Y10T A61F
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David J. Carey V. James D.
Myers Campbell Lewis