Finite-element simulation of stent expansion

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

doi:10.1016/s0924-0136(01)01127-x

Cited by 65 publications

(32 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, due to the closed cell design of the stent, the finite element model predicted expansion of the extremities at a far greater rate than the centre of the model, leading to incomplete expansion of the stent. This 'flaring' or 'dog-boning' affect is characterised in various ways and reported to different degrees in the literature (Chua et al, 2002, Liang et al, 2005, Migliavacca et al, 2005, Wang et al, 2006, though full expansion of the stent occurs. To simulate the constraint of the balloon, which generally prevents the stent from expanding beyond the specified diameter of the balloon, spring elements were incorporated into the model (see Fig.…”

Section: Boundary Conditionsmentioning

confidence: 99%

“…The finite element method has proved extremely useful in modelling the mechanics of stent expansion and stentplaque-artery interactions and it has been demonstrated that finite element modelling is useful for analysing stent/wall stress distributions (Takashima et al, 2007). Stent expansion has been modelled using a number of different approaches, including the expansion of the artery beyond the diameter of the stent and subsequent removal of pressure (Lally et al, 2005), application of pressure directly to the internal faces of the stent (Chua et al, 2002, Holzapfel et al, 2005, Migliavacca et al, 2005, and explicit but simplified cylindrical balloon models that use various material models to simulate the changing stiffness of the balloon as it unfolds (Chua et al, 2003, Chua et al, 2004, Gay et al, 2006, Wang et al, 2006. Only recently has the interaction between a folded balloon and stent been modelled (De Beule, 2006, Laroche et al, 2006.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stresses in peripheral arteries following stent placement: a finite element analysis

Early

Lally

Prendergast

et al. 2009

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

The success of stents to restore blood flow in atherosclerotic peripheral arteries is low relative to coronary arteries. It has been shown that joint flexion induces a mechanical environment that makes stent placement in these arteries highly incompatible, and damage and destruction of stents has been recorded. However, the effect of this environment on the stresses in the arteries is unknown. It is hypothesised that the stresses induced in arteries as a result of this mechanical environment could be sufficient to explain the relatively low success rates. To investigate this hypothesis, a finite element model of the stent-artery interaction was developed. Following stent expansion, bending was simulated by applying a displacement boundary condition to the artery. It is found that high stresses occur at the proximal/distal ends of the stent. As stress and vascular injury are hypothesised to cause restenosis, the results presented here suggest that the mechanical environment of peripheral arteries could be the predominant cause of high restenosis rates.

show abstract

Section: Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stresses in peripheral arteries following stent placement: a finite element analysis

Early

Lally

Prendergast

et al. 2009

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

show abstract

“…To date, several studies have been carried out to investigate how geometrical properties, material properties and deployment methods affect the expansion characteristics of various stent designs (Whitcher 1997;Brauer et al 1999;Dumoulin and Cochelin 2000;Etave et al 2001;Tan et al 2001;Chua et al 2002Chua et al , 2003Chua et al , 2004aMigliavacca et al 2002Migliavacca et al , 2005Stolpmann et al 2003;McGarry et al 2004;Petrini et al 2004;Savage et al 2004;Gu et al 2005;Hall and Kasper 2006;Wang et al 2006;De Beule, Mortier, Belis et al 2007;De Beule et al 2008;Donnelly et al 2007;Wu et al 2007a;Xia et al 2007;Ju et al 2008;Lim et al 2008;Mortier et al 2008;Li et al 2009). A number of these studies which represent significant contributions to research in this field are discussed and summarised in this section (Table 1).…”

Section: Fe Analysis Of the Free Expansion Of Coronary Stentsmentioning

confidence: 99%

Computational structural modelling of coronary stent deployment: a review

Martín¹,

Boyle²

2011

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

The finite element (FE) method is a powerful investigative tool in the field of biomedical engineering, particularly in the analysis of medical devices such as coronary stents whose performance is extremely difficult to evaluate in vivo. In recent years, a number of FE studies have been carried out to simulate the deployment of coronary stents, and the results of these studies have been utilised to assess and optimise the performance of these devices. The aim of this paper is to provide a thorough review of the state-of-the-art research in this area, discussing the aims, methods and conclusions drawn from a number of significant studies. It is intended that this paper will provide a valuable reference for future research in this area.

show abstract

“…The negligible balloon is the most simple in stent deployment strategy. The pressure is applied directly to the inner surface of the stent and neglect the impact of balloon expansion [2][3][4]. The negligible balloon strategy needs a loading scenario to keep the expansion force equal as the accounted balloon strategy.…”

Section: Introductionmentioning

confidence: 99%

Design and modeling balloon-expandable coronary stent for manufacturability

Suryawan

Suyitno

2017

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. Coronary artery disease (CAD) is a disease that caused by narrowing of the coronary artery. The narrowing coronary artery is usually caused by cholesterol-containing deposit (plaque) which can cause a heart attack. CAD is the most common cause mortality in Indonesia. The commonly CAD treatment use the stent to opens or alleviate the narrowing coronary artery. In this study, the stent design is optimized for the manufacturability. Modeling is used to determine the free stent expansion due to applied pressure in the inner surface of the stent. The stress distribution, outer diameter change, and dogboning phenomena are investigated in the simulation. The result of modeling and simulating was analyzed and used to optimize the stent design before it is manufactured using EDM (Electric Discharge Machine) in the next research.

show abstract

Finite-element simulation of stent expansion

Cited by 65 publications

References 4 publications

Stresses in peripheral arteries following stent placement: a finite element analysis

Stresses in peripheral arteries following stent placement: a finite element analysis

Computational structural modelling of coronary stent deployment: a review

Design and modeling balloon-expandable coronary stent for manufacturability

Contact Info

Product

Resources

About