介绍了用Ｎｉ－ Ｔｉ 合金研制的一种新型医用支架。该医用支架无磁无毒、耐蚀耐磨，具有良好的生物相容性， 及手术操作简单， 遇热膨胀， 产生较大的超弹性和回复力， 可撑开狭窄区， 达到消除狭窄的目的。特别适用于食道、贲门、气管、胆道、尿道及肠道等狭窄部位的支撑。 A new type of medical stent developed by Ni-Ti alloy is introduced. The medical stent is non-magnetic, non-toxic, corrosion-resistant and wear-resistant, has good biocompatibility, is easy to operate, expands when heated, produces greater superelasticity and restorative force, can stretch the narrow area and achieve the goal of eliminating the stenosis . Especially for the esophagus, cardia, trachea, biliary, urethral and intestinal and other narrow parts of the support.