Fatigue life analysis and experimental verification of coronary stent.
A computational and experimental method on biomechanics of stent is presented to analyze the stress distribution of different phases and evaluate the fatigue life according to Goodman criteria. As a result, the maximum stress and alternating stress were always located at the curvature area of rings, the fatigue bands in the experiment also verified the computation rationality. Matching between the numerical simulation and experimental results was satisfactory, which proved that the finite element analysis could provide theoretical evidence and help design and optimize the stent structure.
Li
Jianjun
J
MicroPort Medical (Shanghai) Co. Ltd, Shanghai 201203, PR China.
Luo
Qiyi
Q
Xie
Zhiyong
Z
Li
Yu
Y
Zeng
Yanjun
Y
D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D003198:Computer Simulation; D017076:Computer-Aided Design; D055119:Elastic Modulus; D019544:Equipment Failure Analysis; D020342:Finite Element Analysis; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009716:Numerical Analysis, Computer-Assisted; D011474:Prosthesis Design; D011475:Prosthesis Failure; D015607:Stents; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength