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Mechanical Properties Of Coronary Stents Determined By Using Finite Element Analysis.

Frederique Etave, Gérard Finet, Marie Claude Boivin, Jayne C Boyer, Gilles Rioufol, Gilbert Thollet
Published 2001 · Engineering, Medicine
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The mechanical function of a stent deployed in a damaged artery is to provide a metallic tubular mesh structure. The purpose of this study was to determine the exact mechanical characteristics of stents. In order to achieve this, we have used finite-element analysis to model two different type of stents: tubular stents (TS) and coil stents (CS). The two stents chosen for this modeling present the most extreme mechanical characteristics of the respective types. Seven mechanical properties were studied by mathematical modeling with determination of: (1) stent deployment pressure, (2) the intrinsic elastic recoil of the material used, (3) the resistance of the stent to external compressive forces, (4) the stent foreshortening, (5) the stent coverage area, (6) the stent flexibility, and (7) the stress maps. The pressure required for deployment of CS was significantly lower than that required for TS, over 2.8 times greater pressure was required for the tubular model. The elastic recoil of TS is higher than CS (5.4% and 2.6%, respectively). TS could be deformed by 10% at compressive pressures of between 0.7 and 1.3 atm whereas CS was only deformed at 0.2 and 0.7 atm. The degree of shortening observed increases with deployment diameter for TS. CS lengthen during deployment. The metal coverage area is two times greater for TS than for CS. The ratio between the stiffness of TS and that of CS varies from 2060 to 2858 depending on the direction in which the force is applied. TS are very rigid and CS are significantly more flexible. Stress mapping shows stress to be localized at link nodes. This series of finite-element analyses illustrates and quantifies the main mechanical characteristics of two different commonly used stents. In interventional cardiology, we need to understand their mechanisms of implantation and action.



This paper is referenced by
10.1520/STP1481-EB
Fatigue and Fracture of Medical Metallic Materials and Devices
Kenneth L. Jerina (2007)
10.4028/www.scientific.net/AMR.383-390.3192
Effect of Thickness on the Mechanical Properties of Magnesium Alloy Stent
Muhammad Iqbal Sabir (2011)
A novel foldable stent graft
Kaori Kuribayashi (2004)
10.1002/marc.201600412
Biomaterial-Based Approaches to Address Vein Graft and Hemodialysis Access Failures.
Timothy C. Boire (2016)
10.1007/s10439-005-2807-6
Effects of Stent Structure on Stent Flexibility Measurements
Koji Mori (2005)
10.1007/978-3-642-14515-5_366
Formula for Elastic Radial Stiffness of the Tubular Vascular Stent
Yang Jie (2010)
10.1007/s11517-016-1574-x
Behaviour of two typical stents towards a new stent evolution
Mariana Simão (2016)
10.22059/JCAMECH.2018.245070.204
Modification of exponential based hyperelastic strain energy to consider free stress initial configuration and Constitutive modeling
K. Narooei (2018)
10.4028/www.scientific.net/AMM.538.323
Effect of Material and Work Status of Vascular Stents on Flexibility Property of Stents
Xiang Shen (2014)
10.1016/j.jbiomech.2004.07.022
Cardiovascular stent design and vessel stresses: a finite element analysis.
Caitríona Lally (2005)
10.1080/10255840701198004
Modeling of stents exhibiting negative Poisson's ratio effect
J. Raamachandran (2007)
10.1016/j.carpath.2007.10.005
Effects of overexpansion on stents' recoil, symmetry/asymmetry, and neointimal hyperplasia in aortas of hypercholesterolemic rabbits.
Daniel H. Berrocal (2008)
10.1002/9781118364987.CH32
Recrystallization of L‐605 Cobalt Superalloy during Hot‐Working Process
Julien Favre (2012)
10.1142/S1756973710000278
A MULTISCALE APPROACH TO FAILURE ASSESSMENT IN DEPLOYMENT FOR CARDIOVASCULAR STENTS
Frank Harewood (2010)
ÉTUDE EXPÉRIMENTALE D'OPTIMISATION DE PROCÉDÉS DE MODIFICATIONS DE SURFACE DE L'ACIER INOXYDABLE 316 POUR APPLICATION AUX DISPOSITIFS ENDOVASCULAIRES
Marie Haïdopoulos (2005)
The Mechanical Performance of Permanent and Bioabsorbable Metal Stents
James A. Grogan (2012)
10.1177/0040517518797342
Comparative bending behaviors between fully covered and bare biodegradable polydioxanone biliary stents using a numerical approach
Yanhui Liu (2019)
Study for the optimization of interfacial properties between metallic substrates and polymeric coatings by plasma-based surface modification methods to improve performance of vascular stents
Megan Mahrokh Dorri (2017)
10.1016/j.jbiomech.2004.06.008
Finite element analysis of covered microstents.
Linxia Gu (2005)
10.1007/s11666-013-0053-2
Effect of Heat Treatment on the Microstructure and Mechanical Properties of Stainless Steel 316L Coatings Produced by Cold Spray for Biomedical Applications
Bandar Almangour (2014)
10.1080/10255840601086234
Finite element comparison of performance related characteristics of balloon expandable stents
Eric W. Donnelly (2007)
10.1155/2013/370582
Study of the Behavior of a Bell-Shaped Colonic Self-Expandable NiTi Stent under Peristaltic Movements
Sergio Puértolas (2013)
The effect of filter depth and media on the removal of bacteria , organic carbon and nutrients
Mark Gerard Healy (2007)
10.3901/CJME.2016.0125.013
Influence of strut cross-section of stents on local hemodynamics in stented arteries
Yongfei Jiang (2016)
10.1002/jbm.b.31028
Materials, fluid dynamics, and solid mechanics aspects of coronary artery stents: a state-of-the-art review.
Gladius Lewis (2008)
10.3109/03091902.2010.481031
Studying the non-uniform expansion of a stent influenced by the balloon
J Yang (2010)
10.1016/j.cad.2012.03.009
Computational modeling of effects of intravascular stent design on key mechanical and hemodynamic behavior
Hao-Ming Hsiao (2012)
Development of a tissue-regenerative vascular graft: Structural and Mechanical Aspects
Mazin Salaheldin Sirry (2010)
10.1080/0309190021000043710
Measurement of the symmetry of in vitro stent expansion: a stereo-photogrammetric approach
Andrew J. Narracott (2003)
Models of stents - comparison and applications.
Jiří Záhora (2007)
10.1142/S021951941850029X
INVESTIGATION OF MECHANICAL BEHAVIOR OF NiTi STENT UNDER DIFFERENT LOADINGS
Reza Mehrabi (2018)
10.1002/9781118402955.CH16
Structure Design of Vascular Stents
Yaling Liu (2013)
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