Biocompatible cardiovascular implants

Abstract

Coronary implants has been used for the revascularization of occluded coronary arteries, but bare metal stents often caused restenosis by thrombosis grown onto the stent. For the increase of biocompatibility decreasing the restenosis effect, the coating layer based on diamond-like carbon film (DLC) is deposited on the implants surface. DLC films have found widespread application in biological coatings for their chemical and temperature stability. Diamond-coated medical nanocrystalline steel has shown a high level resistance to blood platelet adhesion and thrombi formation [1]. DLC coatings have successfully been proposed for applications as artificial heart valves, catheters, stents, etc.,[2].