Stock material or miscellaneous articles – Composite
Patent
1995-06-07
2000-02-22
Woodward, Michael P.
Stock material or miscellaneous articles
Composite
B32B 904
Patent
active
060278110
ABSTRACT:
An intraluminal vascular graft 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.
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Campbell Carey V.
Lewis James D.
Myers David J.
Borin Michael
House Wayne D
W. L. Gore & Associates, Inc.
Woodward Michael P.
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