血管支架撑开均匀性问题的随机模型研究  

RANDOMIZED MODEL OF EXPANSION UNIFORMITY OF INTRAVASCULAR STENT

作　　者：杨杰[1] 黄楠[2] 杜全兴[3] 游天雪[2] 

机构地区：[1]西南交通大学应用力学与工程系,成都610031 [2]西南交通大学材料科学与工程学院,成都610031 [3]西南交通大学机械工程学院,成都610031

出　　处：《固体力学学报》2008年第3期217-222,共6页Chinese Journal of Solid Mechanics

基　　金：国家"973"计划项目(2005CB623904)资助

摘　　要：撑开均匀性是血管支架的一个重要力学性能,它对于筋的安全性有极大的影响作用.论文研究支架筋的宽度对于撑开均匀性影响规律.建立了基于串联模型的撑开均匀性力学模型;给出了激光切割过程中微管中心偏移量对于筋宽度的影响关系;建立了撑开均匀性随机分析的方法.论文组织了两个算例,详细说明了对该方法的应用,实现了激光偏心距发生随机变化时,对于血管支架撑开性能的随机分析.Expansion uniformity is an important mechanic property of intravascular stent,which pro- duce a critical effect on safety of the stent. The paper investigates mainly the regularity of expansion uni- formity affected by width of beam. The mechanical model has been set up on the basis of expansion uni- formity in unstable serial structure; the formula of the beam width on the condition of the offset is given in the process of laser cutting~ the method to analyze the stochastic problem is put forth. Two examples are organized to illustrate application of the methods,which analyse the stochastic properties of stents when offset of laser is happen.

关 键 词：血管支架 均匀性 串联 随机 偏移量 

分 类 号：R318.0[医药卫生—生物医学工程]