Fatigue life analysis of coronary stent by finite element analysis
- VernacularTitle:冠脉支架的疲劳寿命的有限元体分析
- Author:
Jianjun LI
;
Qiyi LUO
;
Zhiyong XIE
;
Yu LI
- Publication Type:Journal Article
- Keywords:
Pulsatile loading;
Finite element;
Goodman criteria;
Fatigue life;
Accelerated fatigue
- From:
Journal of Medical Biomechanics
2010;25(1):68-73
- CountryChina
- Language:Chinese
-
Abstract:
Objective After the implantation,coronary stent is expected at least to keep its integrity and maintain the predicated function for over 10 years or 4e8 cycles under the pulsatile loading conditions,so the fatigue property of the stent should be evaluated.Method The finite method was used to analyze the stress distribution of different phases and evaluate the fatigue life according to Goodman criteria,meanwhile,the accelerated fatigue experiment was also performed.Results It can be concluded that the dangerous points are all but located in the lateral inner surface of stent curvature.Conclusions The results prove that the fatigue property can be simulated through the finite element analysis,which can provide the theoretical guidance for the stent design.
