Finite Element Simulation of Double-Stent Parallel Thrombectomy at Y-Shaped Bifurcation of Internal Carotid Artery
10.16156/j.1004-7220.2023.03.06
- VernacularTitle:颈内动脉 Y 形分叉处双支架并联取栓术的有限元模拟
- Author:
Kejia ZHAO
1
;
Yunhan CAI
2
;
Wentao YAN
3
;
Shengzhang WANG
1
,
2
,
4
Author Information
1. Institute of Biomedical Engineering Technology, Academy of Engineering and Technology, Fudan University
2. Department of Aeronautics and Astronautics, Institute of Biomechanics, Fudan University
3. Shanghai Testing and Inspection Institute for Medical Device
4. Yiwu Research Institute, Fudan University
- Publication Type:Journal Article
- Keywords:
internal carotid bifurcation;
stent retriever;
double-stent thrombectomy;
finite element analysis
- From:
Journal of Medical Biomechanics
2023;38(3):E465-E471
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the process of single stent and double-stent thrombectomy at the Y-shaped bifurcation of the ideal internal carotid artery by finite element simulation, analyze the stent-thrombus-vessel interaction during the thrombectomy process based on the simulation results, and provide guidance for improving the effect of stent thrombectomy at the bifurcation. Methods The CAD software was used to build the model and the finite element analysis software was used to simulate the process of single stent and double-stent thrombectomy. Results Thrombectomy was unsuccessful in single stent model and successful in double-stent model, and the maximum stress of thrombus during embolus retrieval was twice that of single stent, the maximum strain was 1.12 times that of single stent, and the maximum contact pressure on the surface of vessel was approximately twice that of single stent. Conclusions Double Solitaire stents can effectively prevent thrombus displacement at the bifurcation and successfully retrieve the thrombus, but there is a risk of fracture due to the high stress level in the middle section of the thrombus. The contact pressure of the vessel on the anterior artery side is higher during thrombectomy, and the risk of vessel damage is greater. Therefore, it is necessary to optimize the design of the stent-retriever to improve its flexibility.
