One aspect of the invention is a system for treating vascular conditions, including a catheter, a stent coupled to the catheter, and a polymeric coating on the stent comprising at least one conjugated drug. Each conjugated drug includes a control agent and a bioactive agent, where the control agent controls...http://www.google.com/patents/US20030190341?utm_source=gb-gplus-sharePatent US20030190341 - Conjugated drug-polymer coated stent
