A coating and method for a coating an implantable device or prostheses are disclosed. The coating includes an undercoat of polymeric material containing an amount of biologically active material, particularly heparin, dispersed therein. The coating further includes a topcoat which covers less than the...http://www.google.fr/patents/US6284305?utm_source=gb-gplus-shareBrevet US6284305 - Drug coating with topcoat
