The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Apr. 02, 1999
Hong S. Shim, Santa Ana, CA (US);
Mark C. S. Shu, Mission Viego, CA (US);
David L. Miller, Circle Pines, MN (US);
Edward Di Domenico, Anoka, MN (US);
Catherine E. Taylor, Minneapolis, MN (US);
Kenneth Keeney, Forest Lake, MN (US);
Mark T. Stewart, Lino Lakes, MN (US);
Eileen L. Halverson, Blaine, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
The present invention provides a method for modifying a pyrolytic carbon surface to improve adhesion between it and a subsequently added polymer and/or a bio-active compound. In particular, plasma depositing an oxygen-containing, silicon-containing film forming monomer on a pyrolytic carbon surface improves adhesion of a polymer thereto, wherein the modified pyrolytic carbon surface and silicone rubber has a wet adhesion peel force greater than the wet adhesion peel force between an unmodified pyrolytic carbon and silicone rubber as measured by ASTM D 903-49 after 28 days in an aqueous environment, typically, at least 10 times greater.