Objective: to investigate the biocompatibility of the domestic nitinol alloy stent and polyurethane covered nitinol stent, factors for the prevention of stent restenosis due to intimal hyperplasia.

• 摘要目的：探讨国产镍钛记忆合金血管内支架及带聚氨酯膜内支架的生物相容性和影响内支架通畅的因素。