Wang Weiqiang
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超弹性镍钛合金血管内支架的有限元分析
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Indexed by:Journal Papers

Date of Publication:2005-03-20

Journal:功能材料

Included Journals:Scopus、EI、PKU、ISTIC、CSCD

Volume:36

Issue:3

Page Number:471-473,476

ISSN No.:1001-9731

Key Words:镍钛合金;材料模型;有限元;支架

Abstract:镍钛合金由于其优良的机械性能和生物相容性已经被广泛的应用于生物医用领域,然而由于其超弹性为高度非线性的应力-应变关系,如何对其相关器械的性能进行分析与评价是设计人员面临的主要问题.本文介绍了有限元技术中镍钛合金材料模型的建立方法,并利用有限元软件ANSYS8.0分析了一种超弹性镍钛合金血管内支架的自膨胀过程.结论为支架释放后,将对支架端部血管产生较高的内应力,这容易损伤此处血管,引起血栓及内膜增生等问题;镍钛合金支架释放后,对应的应力水平只有300MPa左右,远远小于不锈钢支架的应力值.因此,支架的柔顺性更好,对血管的刺激更小,这对于提高支架的植入效果将有很大的帮助;有限元技术可以方便的对镍钛合金器械进行模拟分析,这对于镍钛合金器械的研制与开发将有很大的帮助.

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Associate Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:School of Materials Science & Engineering

Discipline:Materials Science. Biomedical Engineering

Business Address:Room 224
School of Materials Science and Engineering,
Dalian University of Technology,
Liaoning 116024,
P. R. of China

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