Improved ptfe vascular prosthesis and method of manufacture

Details Improved ptfe vascular prosthesis and method of manufacture Improved ptfe vascular prosthesis and method of manufacture

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61F 2/82 (2006.01)

Patent

CA 2322639

An implantable microporous ePTFE tubular vascular graft exhibits long term patency, superior radial tensile strength and suture hole elongation resistance. The graft includes a first ePTFE tube and a second ePTFE tube circumferentially disposed over the first tube. The first ePTFE tube exhibits a porosity sufficient to promote cell endothelization tissue ingrowth and healing. The second ePTFE tube exhibits enhanced radial strength in excess of the radial tensile strength of the first tube. The stent provides patency to the endoprosthesis.

Cette greffe vasculaire tubulaire, implantable, en PTFEe (polytétrafluoroéthylène expansé) microporeux, possède une perméabilité longue durée, une résistance à la traction radiale supérieure, ainsi qu'une résistance à l'allongement des trous de suture, et elle comprend un premier tube en PTFEe, ainsi qu'un second tube en PTFEe placé de manière circonférentielle sur le premier tube. Le premier tube en PTFEe possède une porosité suffisante pour favoriser une endothélisation des cellules, une croissance interne des tissus, ainsi qu'une cicatrisation. Le second tube en PTFEe possède une résistance radiale améliorée, supérieure à celle de traction radiale du premier tube. Cet extenseur offre une certaine perméabilité à l'endoprothèse.

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