Patent ID: 8535702
Filing Date: 2013-09-17
Classification: A61L,A61N

Abstract:
1. An implantable or insertable medical device comprising a phase separated polymeric region that comprises a block copolymer comprising a biodegradable polymer block, a biostable low T g elastomeric block and a biostable high T g elastomeric block and is in the form of a polymeric layer overlying a medical device substrate, said phase separated polymeric region comprising (a) a plurality of biostable polymeric phases and (b) a biodisintegrable polymeric phase of nanoscale dimensions that undergoes biodisintegration in vivo, such that said phase separated polymeric region becomes a nanoporous polymeric region when the device is introduced into a patient as a result of the in vivo biodisintegration of the biodisintegrable polymeric phase.