Finite element simulation of stent and balloon interaction

Chua, S. N. David; Donald, Bryan J. Mac; Hashmi, M.S.J.

doi:10.1016/s0924-0136(03)00435-7

Cited by 79 publications

(10 citation statements)

References 1 publication

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“…To date, a significant number of studies have employed numerical methods of analysis to investigate various aspects of stent performance such as stented‐artery hemodynamics, mass transport from drug‐eluting stents and the degradation of bioabsorbable stents . Because of the strong correlation between stent‐induced arterial injury and subsequent neointimal hyperplasia, however, the majority of these studies have focused on investigating stent deployment characteristics and the impact of stent deployment on the mechanical environment of the coronary artery . These studies are typically conducted using the finite element method and are reviewed in detail elsewhere .…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of balloon‐expandable coronary stent deployment: Influence of angioplasty balloon configuration

Martín¹,

Boyle²

2013

Numer Methods Biomed Eng

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SUMMARYToday, the majority of coronary stents are balloon-expandable and are deployed using a balloon-tipped catheter. To improve deliverability, the membrane of the angioplasty balloon is typically folded about the catheter in a pleated configuration. As such, the deployment of the angioplasty balloon is governed by the material properties of the balloon membrane, its folded configuration and its attachment to the catheter. Despite this observation, however, an optimum strategy for modelling the configuration of the angioplasty balloon in finite element studies of coronary stent deployment has not been identified, and idealised models of the angioplasty balloon are commonly employed in the literature. These idealised models often neglect complex geometrical features, such as the folded configuration of the balloon membrane and its attachment to the catheter, which may have a significant influence on the deployment of a stent. In this study, three increasingly sophisticated models of a typical semi-compliant angioplasty balloon were employed to determine the influence of angioplasty balloon configuration on the deployment of a stent. The results of this study indicate that angioplasty balloon configuration has a significant influence on both the transient behaviour of the stent and its impact on the mechanical environment of the coronary artery.

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Section: Introductionmentioning

confidence: 99%

Finite element analysis of balloon‐expandable coronary stent deployment: Influence of angioplasty balloon configuration

Martín¹,

Boyle²

2013

Numer Methods Biomed Eng

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“…Müller et al proposed a fabrication method for tubes using the extrusion of composite materials [6]. Hashmi and coworkers predicted the expanded shape of stent tubes using FEM analysis [7]. However, to date, the number of published papers on shape-memory-alloys is limited [8].…”

Section: Introductionmentioning

confidence: 99%

Mandrel drawing and plug drawing of shape-memory-alloy fine tubes used in catheters and stents

Yoshida

Furuya

2004

Journal of Materials Processing Technology

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“…3(b), expanding the stent radially until passing its elastic deformation limit to a maximum diameter before failure stress was reached. Ramped pressure is chosen as loading, as suggested by previous study [21], to inflate the balloon steadily until reaching 30-40% deformation and then to deflate it. The balloon was subjected to a uniform internal pressure increasing from 0 to 0.95 MPa for the Palmaz model and from 0 to 0.80 MPa for the Sinusoidal model, as illustrated in Fig.…”

Section: Loading and Solutionmentioning

confidence: 99%

Effects of plaque lengths on stent surface roughness

Syaifudin

Takeda

Sasaki

2015

Bio-Medical Materials and Engineering

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The physical properties of the stent surface influence the effectiveness of vascular disease treatment after stent deployment. During the expanding process, the stent acquires high-level deformation that could alter either its microstructure or the magnitude of surface roughness. This paper constructed a finite element simulation to observe the changes in surface roughness during the stenting process. Structural transient dynamic analysis was performed using ANSYS, to identify the deformation after the stent is placed in a blood vessel. Two types of bare metal stents are studied: a Palmaz type and a Sinusoidal type. The relationship between plaque length and the changes in surface roughness was investigated by utilizing three different length of plaque; plaque length longer than the stent, shorter than the stent and the same length as the stent. In order to reduce computational time, 3D cyclical and translational symmetry was implemented into the FE model. The material models used was defined as a multilinear isotropic for stent and hyperelastic for the balloon, plaque and vessel wall. The correlation between the plastic deformation and the changes in surface roughness was obtained by intermittent pure tensile test using specimen whose chemical composition was similar to that of actual stent material. As the plastic strain is achieved from FE simulation, the surface roughness can be assessed thoroughly. The study found that the plaque size relative to stent length significantly influenced the critical changes in surface roughness. It was found that the length of stent which is equal to the plaque length was preferable due to the fact that it generated only moderate change in surface roughness. This effect was less influential to the Sinusoidal stent.

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Finite element simulation of stent and balloon interaction

Cited by 79 publications

References 1 publication

Finite element analysis of balloon‐expandable coronary stent deployment: Influence of angioplasty balloon configuration

Finite element analysis of balloon‐expandable coronary stent deployment: Influence of angioplasty balloon configuration

Mandrel drawing and plug drawing of shape-memory-alloy fine tubes used in catheters and stents

Effects of plaque lengths on stent surface roughness

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