Self-sealing PTFE vascular graft and manufacturing methods

a self-sealing, vascular graft technology, applied in the direction of prosthesis, tubular organ implants, blood vessels, etc., can solve the problems of reducing the ability of the graft to retain a suture, reducing the overall radial tensile strength of the tube, and low axial tear strength, so as to improve the resistance to axially propagating tears, enhance microporous structure, and improve the effect of assimilation ability and re-
US20070244539A1Inactive Publication Date: 2007-10-18LIFEPORT SCI
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
LIFEPORT SCI
Publication Date
2007-10-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

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.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is a continuation of U.S. application Ser. No. 10 / 822,200, filed Apr. 9, 2004, now allowed, which is a continuation of U.S. application Ser. No. 10 / 212,609, filed on Aug. 5, 2002, now U.S. Pat. No. 6,719,783, which is a continuation of U.S. application Ser. No. 09 / 525,710, filed on Mar. 14, 2000, now U.S. Pat. No. 6,428,571, which is a continuation-in-part of U.S. application Ser. No. 09 / 008,265, filed on Jan. 16, 1998, now U.S. Pat. No. 6,036,724, which is a divisional of U.S. application Ser. No. 08 / 588,052, filed on Jan. 22, 1996, now U.S. Pat. No. 5,800,512, the full contents of all of which are incorporated herein by reference.FIELD OF INVENTION

[0002] The present invention relates generally to a tubular implantable prosthesis such as vascular grafts and endoprostheses formed of porous polytetrafluoroethylene. More particularly, the present invention relates to a multi-layered tubular self-sealing graft or endoprost...

Claims

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