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Numerical Investigation of the Flexibility of a New Self-Expandable Tapered Stent

Published online by Cambridge University Press:  30 April 2020

X. Shen Open the ORCID record for X. Shen [Opens in a new window] ,
J. B. Jiang ,
H. F. Zhu ,
Y. Q. Deng  and
S. Ji
X. Shen*
Affiliation:
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
J. B. Jiang
Affiliation:
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
H. F. Zhu
Affiliation:
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
Y. Q. Deng
Affiliation:
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
S. Ji
Affiliation:
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
*
*Corresponding author (sx@ujs.edu.cn)
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Abstract

Flexibility is one of the important mechanical performance parameters of stent. The flexibility of tapered stents, especially self-expanding tapered stents, remains unknown. In this study, we developed a new selfexpanding tapered stent for tapered arteries and performed a numerical investigation of stent flexibility by using finite element method. The effect of stent design parameters, including taper and link space width, on stent flexibility was studied. The flexibility of the proposed stent was also compared with that of traditional cylindrical stents. Results show that the tapered stent is more flexible than the traditional cylindrical stent. Furthermore, the flexibility of the tapered stent increases with increasing stent taper and stent link space width. The increase in the stent link space width can contribute to the reduction in the peak stress. Therefore, tapered stents with high link space width will improve the stent flexibility. This work provides useful information for improvement of stent design and clinical selection.

Keywords

tapered nitinol stentflexibilityfinite element analysismechanical property
Type
Research Article
Information
Journal of Mechanics , Volume 36 , Issue 4 , August 2020 , pp. 577 - 584
Copyright
Copyright © 2020 The Society of Theoretical and Applied Mechanics

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References

REFERENCE

Ragkousis, G. E., Curzen, N., and Bressloff, N. W., “Multi-objective optimisation of stent dilation strategy in a patient-specific coronary artery via computational and surrogate modelling,” Journal of biomechanics, 49, pp. 205–215 (2016).CrossRefGoogle Scholar
Oderich, G. S., “Endovascular aortic repair: current techniques with fenestrated, branched and parallel stent-grafts,” Springer. (2017)Google Scholar
NoadR, L. R, L., Hanratty, C. G., S. J., “Clinical impact of stant design.” Interventional Cardiology Review,9, pp.89–93 (2014)CrossRefGoogle Scholar
Syaifudin, A., Takeda, R., and Sasaki, K., “Effect of Asymmetric Geometry on the Flexibility of Stent,” The International Journal of Mechanical Engineering and Sciences, 1, pp. 1–7 (2017).CrossRefGoogle Scholar
Azaouzi, M., Makradi, A., and Belouettar, S., “Numerical investigations of the structural behavior of a balloon expandable stent design using finite element method,” Computational Materials Science, 72, pp. 54–61 (2013).CrossRefGoogle Scholar
Guan, Y., Lin, J., Dong, Z., and Wang, L., “Comparative Study of the Effect of Structural Parameters on the Flexibility of Endovascular Stent Grafts,” Advances in Materials Science and Engineering, 2018, pp. 1–10 (2018).Google Scholar
Mori, K., and Saito, T., “Effects of stent structure on stent flexibility measurements,” Annals of Biomedical Engineering, 33, pp. 733–742 (2005).CrossRefGoogle ScholarPubMed
Shen, X., Deng, Y. Q., Ji, S., Xie, Z. M., and Zhu, H. F., “Flexibility behavior of coronary stents: the role of linker investigated with numerical simulation,” Journal of Mechanics in Medicine and Biology, 17, pp. 1750112 (2017).CrossRefGoogle Scholar
Bobel, A. C., Petisco, S., Sarasua, J. R., Wang, W., and McHugh, P. E., “Computational bench testing to evaluate the short-term mechanical performance of a polymeric stent,” Cardiovascular engineering and technology, 6, pp. 519–532 (2015).CrossRefGoogle ScholarPubMed
Ju, F., Xia, Z., and Zhou, C., “Repeated unit cell (RUC) approach for pure bending analysis of coronary stents,” Computer methods in biomechanics and biomedical engineering, 11, pp. 419–431 (2008).CrossRefGoogle ScholarPubMed
Imani, M., Goudarzi, A. M., Ganji, D. D., and Aghili, A. L., “The comprehensive finite element model for stenting: The influence of stent design on the outcome after coronary stent placement,” Journal of Theoretical and Applied Mechanics, 51, pp. 639–648 (2013).Google Scholar
Gu, L., Zhao, S., and Froemming, S. R., “Arterial wall mechanics and clinical implications after coronary stenting: comparisons of three stent designs,” International Journal of Applied Mechanics, 4, pp.1250013 (2012).CrossRefGoogle Scholar
Ni, X. Y., Pan, C. W., and Gangadhara Prusty, B., “Numerical investigations of the mechanical properties of a braided non-vascular stent design using finite element method,” Computer methods in biomechanics and biomedical engineering, 18, pp. 1117–1125 (2015).CrossRefGoogle ScholarPubMed
Ni, Z., Gu, X., and Wang, Y., “Rapid prediction method for nonlinear expansion process of medical vascular stent,” Science in China, 52, pp. 1323 (2009).CrossRefGoogle Scholar
Ni, X. Y., Zhang, Y. H., Zhao, H. X., and Pan, C. W., “Numerical research on the biomechanical behaviour of braided stents with different end shapes and stentoesophagus interaction,” International journal for numerical methods in biomedical engineering, pp. e2971 (2018).CrossRefGoogle Scholar
Gu, L., Zhao, S., and Froemming, S. R., “Arterial wall mechanics and clinical implications after coronary stenting: comparisons of three stent designs,” International Journal of Applied Mechanics, 4, pp. 1250013 (2012).CrossRefGoogle Scholar
Sun, A., Fan, Y., and Deng, X., “Intentionally induced swirling flow may improve the hemodynamic performance of coronary bifurcation stenting,” Catheterization and Cardiovascular Interventions, 79, pp. 371–377 (2012).CrossRefGoogle ScholarPubMed
Imani, M., Goudarzi, A. M., and Hojjati, M. H., “Finite element analysis of mechanical behaviors of multilink stent in a coronary artery with plaque,” World Applied Sciences Journal, 21, pp. 1597–1602 (2013).Google Scholar
Zubaid, M., Buller, C., and Mancini, G. B., “Normal angiographic tapering of the coronary arteries,” The Canadian journal of cardiology, 18, pp. 973–980 (2002).Google ScholarPubMed
Shen, X., Xie, Z. M., Sun, Y. Y., and Wu, B. B., “Balloon-expandable stents expansion in tapered vessels and their interactions,” Journal of Mechanics in Medicine and Biology, 14, pp.1440013 (2014).CrossRefGoogle Scholar
Shen, X., Deng, Y. Q., Xie, Z. M., and Ji, S., “Assessment of coronary stent deployment in tapered arteries: Impact of arterial tapering,” Journal of Mechanics in Medicine and Biology, 16, pp. 1640015 (2016).CrossRefGoogle Scholar
Shen, X., Ji, S., Xie, Z., & Deng, Y., “Effect of different expansion strategies on coronary stent deployment in a tapered artery,” Technology and Health Care, 25, pp. 21–28 (2017).CrossRefGoogle Scholar
Valero, E.et al., “Initial experience with the novel biomime 60mm-long sirolimus-eluting tapered stent system in long coronary lesions,” Eurointervention, 13, pp.1591–1594 (2018).CrossRefGoogle Scholar
Zivelonghi, C.et al., “First report of the use of long-tapered sirolimus - eluting coronary stent for the treatment of chronic total occlusions with the hybrid algorithm,” Catheterization and Cardiovascular Interventions, 92, pp. e299–307 (2018).CrossRefGoogle ScholarPubMed
Auricchio, F., Taylor, R. L., and Lubliner, J., “Shape-memory alloys: macromodelling and numerical simulations of the superelastic behavior,” Computer methods in applied mechanics and engineering, 146, pp. 281–312 (1997).CrossRefGoogle Scholar
Zhao, S., Gu, L., and Froemming, S. R., “Performance of self-expanding Nitinol stent in a curved artery: impact of stent length and deployment orientation,” Journal of biomechanical engineering, 134, pp. 071007 (2012).CrossRefGoogle Scholar
Kleinstreuer, C., Li, Z., Basciano, C. A., Seelecke, S., and Farber, M. A., “Computational mechanics of Nitinol stent grafts,” Journal of biomechanics, 41, pp. 2370–2378 (2008).CrossRefGoogle ScholarPubMed
Rebelo, N., Walker, N., Foadian, H., “Simulation of implantable nitinol stents,” Abaqus User’S Conference, pp. 1–14 (2001).Google Scholar
Hsiao, H. M., et al., “Effects of stent design on new clinical issue of longitudinal stent compression in interventional cardiology,” Biomedical microdevices, 16, pp. 599–607 (2014).CrossRefGoogle ScholarPubMed
Takayuki, O.et al., “A pilot study for evaluating the longitudinal strength and flexibility of coronary stents: results of a bench test (original),” Jikeikai Medical Journal, 62, pp. 9–13 (2015).Google Scholar
Demanget, N.et al., “Severe bending of two aortic stent-grafts: an experimental and numerical mechanical analysis,” Annals of biomedical engineering, 40, pp. 2674–2686 (2012).CrossRefGoogle ScholarPubMed
Wang, J.et al., “Endovascular stent-induced alterations in host artery mechanical environments and their roles in stent restenosis and late thrombosis,” Regenerative Biomaterials, 5, pp. 177–187 (2018)CrossRefGoogle ScholarPubMed