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Finite element analysis for compression and expansion behavior of magnesium stent / 中国医疗器械杂志
Chinese Journal of Medical Instrumentation ; (6): 161-176, 2014.
Article in Chinese | WPRIM | ID: wpr-259905
ABSTRACT
Magnesium stents have gained increasing interest as an ideal stent of future intervention. In order to study the deformation behavior of magnesium alloy stents in the interventional treatment, the finite element method was used to analysis the effects of different crimp and expansion dimensions on the mechanical properties (maximum stress, radial recoil rate, longitudinal shortening rate and radial strength). The results showed that crimping and expanding have a minimal influence on the stent radial strength. When the expansion size is same, the maximum equivalent stress and recoil rate decrease with the crimp size. When the crimp size is same, in contrast with the radial recoil rate, the maximum equivalent stress and longitudinal shortening rate increase with the expansion size. In addition the paper verified the radial strength-radial displacement curve obtained by FEM. Results are basically consistent, indicating the finite element method can efficiently provide researchers with reliable, high-quality design.
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Stents / Finite Element Analysis / Alloys / Magnesium Language: Chinese Journal: Chinese Journal of Medical Instrumentation Year: 2014 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Stents / Finite Element Analysis / Alloys / Magnesium Language: Chinese Journal: Chinese Journal of Medical Instrumentation Year: 2014 Type: Article