Investigation of Plaque Effects on Cardiovascular Stent System
A 3D composite stent model, which consists of thestent, plaque, and artery wall, is generated to characterize stenttransient expansion and deflection behavior using Finite ElementMethod (FEM) approach. Two types (flat and central-thicker) ofplaque models have been employed to evaluate the geometricaleffects of atherosclerotic artery on the cardiovascular stentdeployment system. Simulation results demonstrated that theartery wall sustained a higher value of stress near the distal endof stent for both plaque models. In addition, the dog-boningfactor increased significantly (more than 20-fold) and arteryinjury index was much higher for the central-thicker model.Comparatively, the effects resulted from the foreshortening,recoil rate and expansion rate were much less profound for bothplaque models. However, the expansion rates for both plaquemodels did not meet the requirement of clinical practices.Further study to include plaque rupture mechanics forovercoming the shortcoming of the current models is currentlyproceeding.
Heng-Chuan Kan
Computational Application Division National Center for High-performance Computing No.28, Nan-Ke 3 rd Rd., Hsin-Shi, Tainan County 74147, Taiwan, R.O.C.
国际会议
成都
英文
1-3
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）