Volume 14, Issue 4 (2014)                   Modares Mechanical Engineering 2014, 14(4): 45-53 | Back to browse issues page

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Imani M, Moazami Goudarzi A, Mahdinejad J. Assessing the influence of stent geometry and material properties on the outcome after coronary stenting using finite element method. Modares Mechanical Engineering. 2014; 14 (4) :45-53
URL: http://journals.modares.ac.ir/article-15-5284-en.html
1- Babol University of Technology
Abstract:   (3846 Views)
Recently, the use of coronary stents in interventional procedures has rapidly increased and different stent models, with different geometries and materials, have been introduced in the market. In order to select the most appropriate stent model, it is necessary to analyze and compare the mechanical behavior of different types of stent. In this paper, finite element method is used for investigating the effect of stent geometry and material properties on its behavior. Two commercially available stent designs with different geometries (the Palmaz–Schatz and NIR stents) and two different stent materials (stainless steel 304 and Cobalt alloy MP35N) are modeled and their behavior during the deployment is compared in terms of stress distribution in the stent and vessel, and outer diameter changes. Moreover, the effect of stent geometry and material properties on the restenosis after coronary stent placement is investigated by comparing the stress distribution in the arteries. According to the findings, the possibility of restenosis after coronary stenting is lower for NIR stent in comparison with Palmaz–Schatz stent. Moreover, stainless steel 304 is more suitable material for manufacturing stents, in comparison with the other one.
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Article Type: Research Article | Subject: Biomechanics|Stress Analysis|Finite Elements Method
Received: 2014/01/5 | Accepted: 2014/01/21 | Published: 2014/05/31

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