RESEARCH ON THE ELASTIC AND PLASTIC DEFORMATION OF CoCr ALLOY USED FOR CORONARY STENTS

摘要：

The Percutaneous Transluminal Coronary Angioplasty (PTCA) assisted with stenting has become one of the effective means to cure heart disease.In practice,when the balloon and stent are assembled and the stent expands after being inputted,the stent will be compressed and stretched with elastic and plastic deformation twice,which affects the limit load and fatigue strength.In order to grasp the elastic or plastic deformation of CoCr alloy used for coronary stents,this paper proposed solutions based on compression and expansion experiments and analyzed the effect that pre-deformation does on materials property,since stents were compressed before being stretched.The results suggested that pre-compression plastic deformation have almost no effect on the tensile strength of the material,but the tensile elongation of the material decreased.

关键词： CoCr alloy elastic deformation plastic deformation coronary stents

作者: H.Q.Feng F.F.Guo C.Z.Liu S.Yamashita

作者单位: Inner Mongolia University of Technology,Hohhoto 10051,China Japan Stent Technology Co.Ltd,5303 Haga Okayama 701-1221,Japan

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 1150-1153

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）