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Title: The importance of vessel factors for stent deployment in diseased arteries
Authors: Schiavone, Alessandro
Zhao, Liguo
Keywords: Stent deployment
Finite element
Plaque asymmetry
Artery curvature
Issue Date: 2015
Publisher: OAT / © Schiavone A.
Citation: SCHIAVONE, A. and ZHAO, L., 2015. The importance of vessel factors for stent deployment in diseased arteries. Journal of Integrative Cardiology, 1 (5), pp. 107 - 114
Abstract: Finite element analyses have been carried out to investigate the effects of plaque thickness, plaque asymmetry and artery curvature on stent deployment in stenotic arteries. The Xience stent, one of the latest commercial metallic stents, was considered and its expansion was controlled by the inflation of a folded balloon. Results showed that it became a challenge to open arteries with thick plaque via stent expansion, as stresses and recoiling increased considerably with the increasing level of stenosis. Asymmetric plaque caused non-uniform stent expansion and uneven dogboning effect, with considerably high levels of vessel wall stresses developed in the regions covered by relatively thin layer of plaque. In a curved artery, a reduction in stent expansion was observed with the increase of artery curvature, accompanied by an elevation of stresses in the plaque and arterial layers. Consequently, particular care should be taken when implanting stents in diseased arteries with severe stenosis, unevenly distributed plaque layer and sharp curvature, as tissue damage might occur due to non-uniform expansion of the system.
Description: This is an Open Access article published by OAT and distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Version: Published
DOI: 10.15761/JIC.1000130
URI: https://dspace.lboro.ac.uk/2134/19260
Publisher Link: http://oatext.com/The-importance-of-vessel-factors-for-stent-deployment-in-diseased-arteries.php#Article
ISSN: 2058-3702
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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