Self-sealing ptfe graft with kink resistance

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/56 (2006.01) A61B 17/11 (2006.01) A61F 2/06 (2006.01) A61L 27/14 (2006.01) A61L 27/28 (2006.01) A61L 27/40 (2006.01) A61L 27/50 (2006.01) A61L 27/54 (2006.01) A61M 1/14 (2006.01) A61M 39/04 (2006.01)

Patent

CA 2577108

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.

L'invention concerne une greffe vasculaire auto-étanche, comprenant un substrat à couche de scellement et plusieurs couches supplémentaires facultatives. Le substrat peut être en polytétrafluoréthylène expansé (PTFEe) et la matière utilisée pour le scellement et les couches supplémentaires peut consister en du polyuréthanne. La couche de scellement et les couches supplémentaires peuvent contenir une ou plusieurs couches de base, une ou plusieurs couches de mousse, des renforcements de différentes tailles et formes et une bande en PTFEe. Un manchon évasé peut faire partie intégrante d'une ou des deux extrémités du substrat ou peut être fixé à une ou aux deux extrémités. Divers procédés de fabrication d'une greffe vasculaire auto-étanche sont également décrits, notamment des procédés de disposition, des procédés de formation, des procédés de liaison et des procédés de fixation.

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