Simulation of Stent Ezpansion by Finite Element Method
A nonlinear simulation using the finite element method (FEM) was performed to analyze the interaction between the balloon and cardiovascular stent during stent expansion. A tri-folded balloon was constructed, and the frictions between the balloon and stent were considered in the model. In this FEM model, the stent was compressed onto the balloon surface before the expansion, in accordance with the actual expansion procedure. The simulation was carried out using ABAQUES software. The results show that this model can precisely simulate the properties of a stent. We observed that the stent cell end was warped around and detached from the balloon. More importantly, the phenomenon of non-uniform deformation was simulated, which has heretofore not been reported in FEM simulations, but was observed experimentally. The mechanical properties of the stent are closely related to the balloon, and a real FEM model of the balloon should be constructed if we want to study stent expansion more precisely.
cardiovascular stent folded balloon friction ezpansion non-uniform
YANG Jie LIANG Mingbang HUANG Nan YOU Tianxue Du Quanxing MA Shuwen
College of Mechanics and Engineering;Southwest Jiaotong University Chengdu,China,610031 College of Material Science and Engineering;Southwest Jiaotong University Chengdu,China,610031
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）