Numerical simulation of the effect of virtual stent release pose on the expansion results.
10.7507/1001-5515.201703013
- Author:
Jing LI
1
;
Kun PENG
1
;
Xinyang CUI
1
;
Wenyu FU
2
;
Aike QIAO
3
Author Information
1. College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, P.R.China.
2. College of Mechanical and Electrical Engineering, Beijing Union University, Beijing 100020, P.R.China.
3. College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, P.R.China.qak@bjut.edu.cn.
- Publication Type:Journal Article
- Keywords:
endovascular stent;
finite element analysis;
mechanical properties;
numerical simulation
- From:
Journal of Biomedical Engineering
2018;35(2):214-218
- CountryChina
- Language:Chinese
-
Abstract:
The current finite element analysis of vascular stent expansion does not take into account the effect of the stent release pose on the expansion results. In this study, stent and vessel model were established by Pro/E. Five kinds of finite element assembly models were constructed by ABAQUS, including 0 degree without eccentricity model, 3 degree without eccentricity model, 5 degree without eccentricity model, 0 degree axial eccentricity model and 0 degree radial eccentricity model. These models were divided into two groups of experiments for numerical simulation with respect to angle and eccentricity. The mechanical parameters such as foreshortening rate, radial recoil rate and dog boning rate were calculated. The influence of angle and eccentricity on the numerical simulation was obtained by comparative analysis. Calculation results showed that the residual stenosis rates were 38.3%, 38.4%, 38.4%, 35.7% and 38.2% respectively for the 5 models. The results indicate that the pose has less effect on the numerical simulation results so that it can be neglected when the accuracy of the result is not highly required, and the basic model as 0 degree without eccentricity model is feasible for numerical simulation.
