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心脑血管疾病是扼杀人类生命的祸首之一。冠状动脉闭塞是一种严重的心脏病,会导致心肌梗塞。目前,美国治疗冠状动脉闭塞的方法是气球血管整形术即将一微型气球塞进闭塞的血管,然后吹涨气球,扩张血管,清除障碍物。美国大约有超过40万名心脏病患者接受过这种治疗。美国每年为此耗费大约40亿美元。但这种手术存在一个问题:血管经用气球整形术扩张后又会重新闭塞。因此,超过1/4的病人需要做第二次气球整形术或做旁通管外科手术,病人受罪,美国的医疗费用也因此增加10亿多美
Cardiovascular disease is one of the chief culprits that stifles human life. Coronary artery occlusion is a serious heart disease that can lead to myocardial infarction. At present, the United States is the treatment of coronary artery occlusion balloon angioplasty is about to plug a miniature balloon occlusion of blood vessels, and then inflate the balloon, dilation of blood vessels, remove obstacles. About 400,000 heart patients in the United States have received this treatment. The United States spends about 4 billion U.S. dollars each year. However, there is a problem with this operation: blood vessels will balloon again after ballooning. As a result, more than a quarter of patients require a second balloon surgery or bypass surgery and the patient suffers a crime, thereby raising the U.S. medical cost by more than 1 billion U.S. dollars