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Structural Design and Numerical Analysis of a Novel Biodegradable Zinc Alloy Stent

Kun Peng1, Aike Qiao1,*, Makoto Ohta2, Narendra Kurnia Putra2, Xinyang Cui1, Yongliang Mu3, Hitomi Anzai2
College of Life Science and Bioengineering, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing, 100022, China.
Institute of Fluid Science, Tohoku University, Sendai, Miyagi, 980-85777 Japan.
Institute of Metallurgical Research, Northeastern University, Shenyang, Liaoning, 110819, China.
*Corresponding Author: Aike Qiao. Email: .

Computer Modeling in Engineering & Sciences 2018, 117(1), 17-28. https://doi.org/10.31614/cmes.2018.04113

Abstract

Biodegradable zinc alloy stents are a prospective solution for complications caused by the incompatibility between artery and permanent stents. However, insufficient scaffolding has limited the clinical application of biodegradable zinc alloy stents. Therefore, in this study, a new stent concept was designed to improve the scaffolding. The mechanical performances of the new and a traditional design stent were investigated and compared using finite element analysis (FEA). The new and traditional design stent were expanded to the intended radial displacement of 0.24 mm under the expansion pressure of 0.58 MPa and 0.45 MPa, respectively. Then, a pressure load of 0.35 MPa was exerted on the outer surfaces of the two stents to compress them. The results showed that the radial recoiling ratio were 45.3% and 83.3% for the new and the traditional stent, respectively. The simulations demonstrate that the biodegradable zinc alloy stent offers enhanced support because of the new structural design. This study implies that biodegradable zinc alloy stent can be a new competitive intervention device for the future clinical cardiovascular application.

Keywords

Biodegradable stent, design, finite element analysis.

Cite This Article

Peng, K., Qiao, A., Ohta, M., Putra, N. K., Cui, X. et al. (2018). Structural Design and Numerical Analysis of a Novel Biodegradable Zinc Alloy Stent. CMES-Computer Modeling in Engineering & Sciences, 117(1), 17–28.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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