Influence of bionic texture coronary stent on hemodynamics after implantation.
10.7507/1001-5515.202106050
- Author:
Changsheng LI
1
;
Haiquan FENG
1
;
Shuangquan MA
1
;
Liping BAI
2
Author Information
1. College of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, P. R. China.
2. Cardiovascular Department, Inner Mongolia Medical University, Hohhot 010059, P. R. China.
- Publication Type:Journal Article
- Keywords:
Bionic texture;
Coronary stent;
Finite element method;
Hemodynamics;
Wall shear stress
- MeSH:
Bionics;
Computer Simulation;
Coronary Vessels;
Hemodynamics/physiology*;
Models, Cardiovascular;
Stents;
Stress, Mechanical
- From:
Journal of Biomedical Engineering
2022;39(2):339-346
- CountryChina
- Language:Chinese
-
Abstract:
To explore the influence of bionic texture coronary stents on hemodynamics, a type of bioabsorbable polylactic acid coronary stents was designed, for which a finite element analysis method was used to carry out simulation analysis on blood flow field after the implantation of bionic texture stents with three different shapes (rectangle, triangle and trapezoid), thus revealing the influence of groove shape and size on hemodynamics, and identifying the optimal solution of bionic texture groove. The results showed that the influence of bionic texture grooves of different shapes and sizes on the lower wall shear stress region had a certain regularity. Specifically, the improvement effect of grooves above 0.06 mm on blood flow characteristics was poor, and the effect of grooves below 0.06 mm was good. Furthermore, the smaller the size is, the better the improvement effect is, and the 0.02 mm triangular groove had the best improvement effect. Based on the results of this study, it is expected that bionic texture stents have provided a new method for reducing in-stent restenosis.
