MEDICAL DEVICE HAVING RADIO-OPACIFICATION AND BARRIER LAYERS

摘要

A medical device such as a coronary stent is provided that can be visualized in vivo) while further aiding in the prevention of restenosis. The medical device comprises a core having a first layer disposed thereon. The first lay er is made from a material that is radio-opaque so that the medical device may be visualized in-vivo. An outer layer is disposed onto and surrounds at least a portion of the first layer to provide a barrier layer between the radio-opaq ue inner layer and blood and/or tissue disposed within the patient's vessel. Th e outer surface of the outer layer may include a textured surface of micropore s, grooves, cross-hatched lines to receive a therapeutic agent. Drugs and treatments which utilize anti-thombogenic agents and anti-proliferation agen ts may be readily deployed from the textured outer surface of the outer layer o f the medical device.