199119972003197919851994198820001982PTCADebulking 设备支架药物释放支架及放射治疗回顾介入治疗的历史A novel solutionA novel solutiondrugdrug-eluting stents eluting stents（DESsDESs）allowing allowing controlled release controlled release of a drug directly of a drug directly to the injured to the injured endothelium endothelium What are What are DESs?DESs?Coronary Coronary artery stentsartery stentscoated with a coated with a variety of variety of pharmacologic pharmacologic agentsagents
