A method for forming an implantable medical device, such as a stent, is provided, in which electric discharges are applied to a metal surface of the implantable medical device. The electric discharges pit the surface. The pitted surface improves retention of a coating on the device and increases the...http://www.google.de/patents/US7537610?utm_source=gb-gplus-sharePatent US7537610 - Method and system for creating a textured surface on an implantable medical device
