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Looped ends versus open ends braided stent: A comparison of the mechanical behaviour using analytical and numerical methods.

Abstract：

:The present study has two major purposes: firstly, to investigate whether the analytical model proposed by Jedwab and Clerc for assessing the mechanical behaviour of an open ends metallic braided stent is applicable to the looped ends stent design and secondly, to compare the response of the two stent designs subjected to radial compression. We use finite element analysis to evaluate the performance of the two braided stents emulating well established designs: WALLSTENT and WallFlex. We validate the WALLSTENT model analytically. We perform a radial crimping simulation and evaluate the radial forces and stresses induced. This study confirms the validity of using the analytical model in the biomechanical analysis of the WALLSTENT design. However, in case of the WallFlex design, a major difference in the results can be observed in the levels of radial forces and wire peak stresses, justifying the decision of using a different alloy in the fabrication of the WallFlex design.

journal_name

J Mech Behav Biomed Mater

journal_title

Journal of the mechanical behavior of biomedical materials

authors

Shanahan C,Tiernan P,Tofail SAM

doi

10.1016/j.jmbbm.2017.08.025

subject

Has Abstract

pub_date

2017-11-01 00:00:00

pages

581-591

eissn

1751-6161

issn

1878-0180

pii

S1751-6161(17)30367-3

journal_volume

75

pub_type

杂志文章

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