An FEA method to study flexibility of expanded coronary stents

被引：31

作者：

Wu, W. ^{[1
]}

Yang, D. -Z. ^{[1
]}

Qi, M. ^{[1
]}

Wang, W. -Q. ^{[1
]}

机构：

[1] Dalian Univ Technol, Dept Mat Engn, Dalian 116024, LiaoNing, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2007年 / 184卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

coronary stents; biomechanical characteristics; flexibility; multipoint constraint elements; finite element method;

D O I：

10.1016/j.jmatprotec.2006.12.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this paper is to show how finite element analysis can be used to research flexibility of expanded stainless steel coronary stents. With multipoint constraint elements (MPC), uniform bending moment was applied to a unit model of a commercial tubular stent. Bending stiffness was measured as 16.8 and 1.1 N mm(2) rad(-1) for elastic and plastic deformation, respectively. Furthermore, a complete model of the same stent was bent under multiple moment loadings to test the general application of the method and the result accorded with the expectation. In conclusion, this finite element analysis (FEA) bending method can be used to study and compare flexibility of different stents, and provides a convenient tool for designers to pretest and improve bending characteristics of new stents. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：447 / 450

页数：4

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