Numerical simulation of fluid-structure interaction in fusiform aneurysm treated with stent with triangular wire cross-section.
- Author:
Tingting YAN
1
;
Fangfang LIN
;
Xue CHEN
;
Aike QIAO
Author Information
1. College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100124, China.
- Publication Type:Journal Article
- MeSH:
Aneurysm;
therapy;
Computer Simulation;
Hemorheology;
physiology;
Humans;
Intracranial Aneurysm;
therapy;
Prosthesis Design;
Stents
- From:
Journal of Biomedical Engineering
2012;29(5):867-871
- CountryChina
- Language:Chinese
-
Abstract:
A new stent with triangular wire cross-section was proposed. The new stents were compared with traditional circular wire cross-section stent in the same porosity in order to investigate its effectiveness in treating intracranial aneurysms. Three models were established separately, including the aneurysm model with circle cross section stent, the aneurysm model with triangular cross section stent and the aneurysm model with non-stent. Then the same boundary conditions were set to contrast the resistance to flow, velocity, pressure, wall shear stress and total mesh displacement. The resistance to flow of triangular cross section stent was lower than circle cross section stent and the velocity, pressure, total mesh displacement of aneurysm model with triangular cross section stent were all higher than those of the model with circle cross section stent. Moreover, the peak value and valley value of wall shear stress in aneurysm model with triangular cross section stent were higher than those of the other. Triangular cross section stent might play a negative role to aneurysm rupturing. Thus, the therapeutic effect of stent with triangle cross section was not better than the stent with circle cross section. In the clinical application, doctors should consider the various factors, and choose the most suitable one.
