A vascular stent comprising a drug-eluting outer layer of a porous sputtered columnar metal having each column capped with a biocompatible carbon-containing material is described. This is done by placing the stent over a close-fitting mandrel and rotating the assembly in a sputter flux. The result is...http://www.google.se/patents/US8066764?utm_source=gb-gplus-sharePatent US8066764 - Stent coating for eluting medication
