Biodegradable vascular stents have better biocompatibility than drug-eluting stents. The blood vessels are rebuilt and degraded after normal physiological functions are restored. Due to it will not stay in the body for a long time and the patients don't need taking anti-rejection drugs all the time, it becomes the focus of attention in the treatment of coronary heart disease. This article introduced the development history of biodegradable stents and reviewed the research status of several different materials of vascular stents (animals or humans) in vivo and pointed out the existing problems. And it also predicted the research direction of biodegradable vascular stents.
Keywords: biodegradable; iron alloy; magnesium alloy; polymer; stents; zinc alloy.