Coating for medical device having increased surface area

摘要

Described herein are implantable medical devices for delivering a therapeutic agent to the body tissue of a patient, and methods for making such medical devices. In particular, the implantable medical devices, such as intravascular stents, have a coating which includes at least one coating composition and has an exposed abluminal surface and an exposed luminal surface or exposed side surface.

主权项

1. An implantable stent comprising:
(a) a stent sidewall structure having an abluminal surface and a luminal surface opposite the abluminal surface, the luminal surface being an outer surface of the stent sidewall structure and the abluminal surface being an inner surface of the stent sidewall structure, when the stent sidewall structure is delivered in a body lumen, the luminal surface to be at least partially exposed to face a lumen wall of the body lumen, and the adluminal surface to be at least partially exposed to face away from the lumen wall; and wherein the coating has a cross-section in the shape of a “T”, (b) a coating comprising a coating composition disposed over at least a portion of the abluminal surface of the stent sidewall structure, wherein the coating has an exposed abluminal surface to face away from the abluminal surface of the stent sidewall structure and an exposed luminal surface to face the abluminal surface of the stent sidewall structure, and wherein the coating composition comprises a therapeutic agent.