An implantable medical device, perhaps a pacemaker lead, has a medical unit and a casing at least partially enclosing the medical unit. The casing is formed of a base polymer having surface modifying pendant groups formed of an acrylamide polymer or an acrylamide copolymer, perhaps polyisopropyl acrylamide....http://www.google.de/patents/US20030028224?utm_source=gb-gplus-sharePatent US20030028224 - Enhanced chronic lead removal
