An analysis of the contact between the stent and the artery using tube hydroforming simulation

Araújo, Rui; Guimarães, Tobias Anderson; Oliveira, S. A. G.

doi:10.1002/cnm.2569

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…It is particularly unfavourable, especially in terms of numerical errors that are superimposed with every increment. Despite those disadvantages, the explicit solution has been used widely since 2008 in numerical simulations of the balloon‐expandable coronary stent deployment process . Graphical representation of the performed literature review is presented in Figure .…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

Bukała

Kwiatkowski

Małachowski

2017

Numer Methods Biomed Eng

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The paper presents an applied methodology for numerical finite element analysis of coronary stent crimping and the free inflation process with the use of a folded noncompliant angioplasty balloon. The use of an implicit scheme is considered as the most original part of the work, as an explicit finite element procedure is very often preferred. Hitherto, when the implicit solution was used for the finite element solution, the simulated issue was largely simplified. Therefore, the authors focused on the modelling methodology with minimum possible simplification, ie, a full load path (compression and inflation in single analysis), solid element discretization, and sophisticated contact models (bodies with highly different stiffness). The obtained results are partially compared with experimental data (radial force during the crimping procedure) and present satisfactory compliance. The authors believe that presented methodology allow for significant improvement of the obtained results, as well as potential extension of the research scope, compared to previous efforts performed using the explicit integration scheme. Moreover, the presented methodology is believed to be suitable for sensitivity and optimization studies.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

Bukała

Kwiatkowski

Małachowski

2017

Numer Methods Biomed Eng

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“…However, the stainless steel is composed of several metal elements, including nickel element. 17 Nickel ion released from the 316L stainless steel can cause inflammation reaction, stimulate the proliferation of VSMC and increase the ISR. 18 TiO 2 is an inert bio-ceramic material 19 and has good biocompatibility and stability, good anti-oxidation and anticorrosion resistance.…”

Section: Discussionmentioning

confidence: 99%

The effect of REDV/TiO₂ coating coronary stents on in-stent restenosis and re-endothelialization

Wang

et al. 2016

J Biomater Appl

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The coronary artery stent has been widely used in clinic. In-stent restenosis was mainly caused by the excessive proliferation of smooth muscle cell and the inflammation due to the metal ion released from stent scaffold of the drug-eluting stent. Thus, to reduce the in-stent restenosis and promote the vascular endothelialization have become a hot research point in this area. In this paper, a nano-TiO ceramic coating was deposited on 316L stainless steel to reduce the metal ion release and to inhibit the inflammation reaction. An endothelia cell selective adhesion peptide Arg-Glu-Asp-Val (REDV) coating was prepared on the ceramic coating by a polydopamine technology to promote the endothelialization. The corrosion test indicated that nano-TiO ceramic film could effectively decrease the nickel ion released from 316L stainless steel. REDV/TiO coating could promote the endothelial cell adhesion and proliferation, meanwhile REDV/TiO coating could also increase the nitric oxide concentration. Bare metal stent, TiO-coated stent and REDV/TiO-coated stent were implanted in the iliac arteries of rabbit model. In-stent restenosis and re-endothelialization were evaluated at 28 days post-implantation of the stents. The results showed that REDV/TiO-coated stents could effectively reduce in-stent restenosis and promote re-endothelialization in comparison with TiO-coated drug-eluting stent and bare metal stent. These results suggest that REDV/TiO-coated drug-eluting stent maybe a good choice of the application for coronary artery disease.

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“…Some researchers only consider the mechanical properties of the stent to study the fatigue life, radial stiffness, axial compliance and other related factors of the stent, hoping to improve the effect of the stent [2]. Some researchers study the contact analysis of stent and blood vessel, considering the interaction between stent and blood vessel in a short period of time after the stent props open the blood vessel [3]. The above research mainly focuses on the structural design of the stent, but ignores a lot of internal information of blood vessel, such as plaque information.…”

Section: Introductionmentioning

confidence: 99%

Individualized Analysis of the Stent Implantation Performance Based on the Vascular Reconstruction

Shao,

Chen,

Liu

2023

J. Phys.: Conf. Ser.

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More and more researchers pay attention to the method of using stents treats the intracranial aneurysms through the way of minimally invasive surgery. Due to individual differences between patients and complexity of stenosis lesion, there is not an acknowledged criterion on stenting scheme, which mainly depends on clinicians’ experience. Otherwise, inappropriate stenting scheme may lead to severe complications such as intravascular restenosis after a certain period of time after surgery. By means of simulation to explore this problem is a simple and effective way, but most simulation studies only focus on the design of stent structure and ignore the importance of building a real blood vessel model. The use of idealized vascular model will inevitably affect the simulation accuracy, and it leads to a large difference between the theoretical effect and the actual effect of the stent. Therefore, reconstructing the accurate blood vessel model is the crucial work in this study. In order to research the mechanical properties of stents, the model is constructed by the OpenCASCADE kernel. It provides reference for assessing surgical plan and illuminating biomechanical mechanism of in-stent restenosis. At the same time, it may contribute to novel stent development and optimization design, assist doctor to make better surgical scheme as well as predict surgical results.

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An analysis of the contact between the stent and the artery using tube hydroforming simulation

Cited by 5 publications

References 14 publications

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

The effect of REDV/TiO₂ coating coronary stents on in-stent restenosis and re-endothelialization

Individualized Analysis of the Stent Implantation Performance Based on the Vascular Reconstruction

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An analysis of the contact between the stent and the artery using tube hydroforming simulation

Cited by 5 publications

References 14 publications

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

Numerical analysis of crimping and inflation process of balloon‐expandable coronary stent using implicit solution

The effect of REDV/TiO2 coating coronary stents on in-stent restenosis and re-endothelialization

Individualized Analysis of the Stent Implantation Performance Based on the Vascular Reconstruction

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The effect of REDV/TiO₂ coating coronary stents on in-stent restenosis and re-endothelialization