(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2005/0112171 Al
Tang et al. (43) Pub. Date: May 26,2005
Patent Application Publication May 26,2005 Sheet 2 of 3 US 2005/0112171 Al
(54) COATINGS FOR IMPLANTABLE DEVICES INCLUDING BIOLOGICALLY ERODABLE POLYESTERS AND METHODS FOR FABRICATING THE SAME
(76) Inventors: Yiwen Tang, San Jose, CA (US);
Stephen D. Pacetti, San Jose, CA (US)
Squire, Sanders & Dempsey L.L.P.
1 Maritime Plaza, Suite 300
San Francisco, CA 94111 (US)
(21) Appl. No.: 10/719,516
(22) Filed: Nov. 21, 2003
A medical article comprising an implantable substrate having a coating is disclosed, the coating comprising a biologically erodable polymer having the glass transition temperature below about -50° C. The biologically erodable polymer can be blended with a polymeric additive which either has the glass transition temperature of about -50° C. or higher, or a degree of crystallinity greater than that of the first polymer.