Development of Novel DLC Film using Plasma Technique for Medical Material

Abstract

Coronary Stent has been used for the revascularization of occluded coronary artery, but bare metal stent often caused restenosis by thrombosis attached on stent or the abnormal proliferation of smooth muscle cells. To decrease the restenosis, the coat of diamond-like carbon (DLC) thin film on the stent has been expected. DLC film has been known as one of biocompatible materials for medical devices because of its chemical stability. The application of DLC films on a coronary stent is specifically required and the improvement of the plasma processing is required for the preparation of more excellent bio-compatible DLC films. Our knowledge and experience bring about an innovative bio-compatible DLC film, which is realized through the precise control of plasma processing. The newly developed biomimetic DLC film will be applied to metalic medical devices as one of the best coating.