Purification of polymers for coating applications

US7985441B1 · kind B1 · utility

Inventors

• Yiwen Tang · San Jose, US
• Stephen D. Pacetti · San Jose, US
• Qing Lin · San Diego, US
• Ni Ding · San Jose, US

Key dates

• Filing date: May 4, 2006
• Grant date: Jul 26, 2011
• Expiry date: Jul 6, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2420/02
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Various embodiments of methods and devices for coating stents are described herein. Among these embodiments are methods of manufacturing an implantable medical device by purifying a polymer with a fluid capable of swelling the polymer, and subsequently coating a device with the purified polymer or fabricating a device from the purified polymer. A preferred polymer is poly(vinylidene fluoride-co-hexafluoropropylene).