Application of FEA to coronary stent design

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Application of FEA to coronary stent design

Article | 更新时间：2020-08-12

- Application of FEA to coronary stent design
- Optics and Precision Engineering Vol. 16, Issue 1, Pages: 87-91(2008)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：26 June 2007，
  
  Revised：27 July 2007，
  
  Published Online：22 January 2008，
  
  Published：22 January 2008
- 稿件说明：
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祁磊. 有限元分析在冠脉支架设计中的应用[J]. 光学精密工程, 2008,16(1):87-91

Application of FEA to coronary stent design[J]. Optics and precision engineering, 2008, 16(1): 87-91.
祁磊. 有限元分析在冠脉支架设计中的应用[J]. 光学精密工程, 2008,16(1):87-91 DOI：

Application of FEA to coronary stent design[J]. Optics and precision engineering, 2008, 16(1): 87-91. DOI：

摘要

目的:用有限元法确定所设计的冠脉支架膨胀后的长度缩短率和狗骨头率，以检验结构是否合理。方法:用有限元分析软件ANSYS9.0模拟支架单独自由膨胀过程，在没有考虑球囊和血管壁的作用下研究此支架从原始状态膨胀时的几何建模、网格划分、边界条件、载荷定义等技术。结果：根据有限元模拟结果计算得支架长度缩短率为10.9%，狗骨头率为2.57%。为了验证有限元分析的准确性，对实际加工出来的支架进行了膨胀实验。实际膨胀后计算所得两个参数与有限元模拟结果之误差分别为0.3％和1.32％，结果吻合较好。结论：所设计的冠脉支架膨胀均匀、结构合理，同时也验证了用有限法进行冠脉支模拟分析是可行的。

Abstract

OBJECTIVE:the shortage ratio and dogboning ratio of the new style stent expanded were calculated to determine whether the strcture is reasonable.METHOD:the unrestricted stent was expanded in FEA software ANSYS9.0

the technology of finite element analysis of stent expansion from its initial status including geometry modeling、material selection、meshing、boundary conditions、loads definition in the condition which interacting stent、artery and plaque that unconsidered was studied. RESULTS:The shortage ratio and dog boning ratio of stent calculated based on the FEM results were separately 10.9% and 2.57%. To validate the simulation

a real stent was expanded; the experiment proved the error between the real expansion result and the finite element analysis result were separately 0.3%and1.32%.. CONCLUSION: the expanded stent was uniformity

the structure designed is correct. Using finite element to simulate the coronary stent was feasible

which could help the design and use of the stent. Keywords: Coronary stent finite element analysis expansi

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