The present invention is directed to polymeric materials (e.g., coatings) comprising biodegradable copolymers and implantable devices (e.g., drug-delivery stents) formed of such materials. The biodegradable copolymers are derived from at least two relatively polar monomers and at least one relatively...http://www.google.com.au/patents/US20090110713?utm_source=gb-gplus-sharePatent US20090110713 - Biodegradable polymeric materials providing controlled release of hydrophobic drugs from implantable devices
