Covered stent with encapsulated ends

US6579314B1 · kind B1 · utility

Assignee

• C.R. Bard, Inc. · US

Inventors

• Sylvie Lombardi · Palo Alto, US
• Guido Koch · Karlsruhe, DE
• Richard Layne · Los Altos, US
• Tarun J. Edwin · Tempe, US
• Wolfgang Supper · Karlsruhe, DE
• Walter Gamer · Bruchsal, DE
• Thomas S. Kirchhoff · Walzbachtal, DE

Key dates

• Filing date: Oct 29, 1999
• Grant date: Jun 17, 2003
• Expiry date: Oct 29, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2230/0054
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A portion of a covered stent is encapsulated with ePTFE, so that the unencapsulated portion, which is covered by a single ePTFE covering, imparts an unimpaired flexibility to the stent. One surface of the stent, either the luminal or abluminal surface, is covered by a single continuous layer of ePTFE, while limited regions, preferably near the ends of the stent, of the other surface are also covered by ePTFE. The regions covered by ePTFE on both surfaces become encapsulated when the ePTFE of one layer becomes bonded to second layer. By leaving a middle region of the stent unencapsulated, the stent retains flexibility similar to a bare stent, thereby reducing the loading and deployment forces.