Korean Journal of Medical Physics  2009;20(3):119-124

A Study on Fatigue Characteristic of Stent Using Finite Element Analysis.

Han Ki KIM 1 ; Il Gyun SHIN ; Dong Gon KIM ; Seong Hyeon KIM ; Ju Ho LEE ; Byoyng Yun KI ; Tae Suk SUH ; Sang Ho KIM

Affiliations

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Keywords

Finite element method; Stent; Fatigue; Compression of stent; Simulation

Country

Republic of Korea

Language

Korean

Abstract

Stents are frequently used throughout the human body. They keep pathways open in vascular or nonvascular duct for a long time. Therefore its stability is very important factor. In recent years, aconsiderable amount of research has been carried out in order to estimate mechanical properties of the stent such as expansion pressure behavior, radial recoil and longitudinal recoil using FEM (Finite element analyses). However, published works on simulation of stent fatigue behavior using FEM are relatively rare. In this paper, a nonlinear finite-element method was employed to analyses the compression of a stent using external pressure and fatigue behavior. Finite element analyses for the stent system were performed using NASTRAN FX. In conclusion this paper shows how the stent is behaved in the body, and its fatigue behavior.