Self-sealing PTFE graft with kink resistance
First Claim
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1. A self-sealing vascular graft, comprising:
- a tubular ePTFE substrate having a first surface and a second surface spaced from the first surface;
a layer of sealant disposed over one of the first and second surfaces, the sealant comprising a polymeric material resistant to plastic deformation upon insertion of a puncture member through the sealant layer;
a first layer of foam disposed over the sealant layer;
a PTFE beading helically wrapped over the first foam layer circumscribing a longitudinal axis of the ePTFE substrate;
a second layer of foam disposed over the PTFE beading; and
an outer layer disposed over the second foam layer.
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Abstract
A self-sealing vascular graft, including a substrate with a sealant layer and several optional additional layers, is described. The substrate can be ePTFE and the material used for the sealant and additional layers can be polyurethane. The sealant layer and additional layers may include one or more base layers, one or more foam layers, beading of different sizes and shapes, and ePTFE tape. A flared cuff may be integral to one or both ends of the substrate or may be attached to one or both ends. Various methods of making a self-sealing vascular graft are also described, including methods of disposition, methods of forming, methods of bonding and methods of attaching.
241 Citations
11 Claims
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1. A self-sealing vascular graft, comprising:
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a tubular ePTFE substrate having a first surface and a second surface spaced from the first surface; a layer of sealant disposed over one of the first and second surfaces, the sealant comprising a polymeric material resistant to plastic deformation upon insertion of a puncture member through the sealant layer; a first layer of foam disposed over the sealant layer; a PTFE beading helically wrapped over the first foam layer circumscribing a longitudinal axis of the ePTFE substrate; a second layer of foam disposed over the PTFE beading; and an outer layer disposed over the second foam layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification