Effect of different structural parameters of filter rod on mechanical properties of new vena cava filter.
10.7507/1001-5515.201910015
- Author:
Budan ZHOU
1
;
Haiquan FENG
1
;
Yonggang WANG
2
;
Xiaotian WANG
3
Author Information
1. College of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, P.R.China.
2. Suzhou Venmed Technology Co., Ltd, Suzhou, Jiangsu 215000, P.R.China.
3. The First Affiliated Hospital of University of Science and Technology of China, Hefei 230000, P.R.China.
- Publication Type:Journal Article
- Keywords:
biomechanics properties;
deformation behavior;
finite element method;
structural parameter;
vena cava filter
- MeSH:
Finite Element Analysis;
Vena Cava Filters;
Vena Cava, Inferior
- From:
Journal of Biomedical Engineering
2020;37(4):622-629
- CountryChina
- Language:Chinese
-
Abstract:
The dynamic analysis of the implantation process of a new vena cava filter was carried out by finite element analysis method to reveal the influence of the angle, length, width and thickness of the filter rod on its mechanical properties and the inner wall of the blood vessel. The results showed that the high-stress and high-strain areas of the filter were mainly concentrated in the connection between the filter rod and the filter wire. With the increase of the angle of the filter rod, the maximum equivalent stress and the maximum elastic strain on the filter wall decreased, while the maximum equivalent stress on the vascular wall increased. With the increase of the length of the filter rod, the maximum equivalent stress and strain peak of the filter wall increased, but the maximum equivalent stress of the vessel wall decreased. With the increase of the width and thickness of the filter rod, the maximum equivalent stress of the filter wall, the maximum elastic strain and the maximum equivalent stress of the vessel wall all showed an upward trend. The static safety factor of all filter models was greater than 1, and the structure after implantation was safe and reliable. The results of this study are expected to provide a theoretical basis for the structural optimization and deformation mechanism of the new type vena cava filter.
