A non-polymeric or biological coating applied to porous radially expandable interventional medical devices provides uniform drug distribution and permeation of the coating and any therapeutic agents mixed therewith into a targeted treatment area within the body. The coating is sterile, and is capable...http://www.google.co.uk/patents/US20050113687?utm_source=gb-gplus-sharePatent US20050113687 - Application of a therapeutic substance to a tissue location using a porous medical device
