PTFE vascular graft and method of manufacture

US6719783B2 · kind B2 · utility

Assignee

• Scimed Life Systems, Inc. · US

Inventors

• David J. Lentz · Salt Lake City, US
• Jamie Henderson · Oakland, US
• Edward Dormier · Rockaway, US
• Richard J. Zdrahala · Bloomington, US
• Gary L. Loomis · Morristown, US
• Ronald Rakos · Neshanic Station, US
• Krzysztof Sowinski · Wallington, US

Key dates

• Filing date: Aug 5, 2002
• Grant date: Apr 13, 2004
• Expiry date: Aug 5, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L27/507
• WIPO field: Medical technology
• WIPO sector: Instruments

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.