Thin-wall intraluminal graft

Details Thin-wall intraluminal graft Thin-wall intraluminal graft

1993-08-18

2000-12-12

Woodward, Michael P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 369, 428 3691, 428 3692, 428420, 428421, 428422, 623 1, B29D 2200

Patent

active

061595659

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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