A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics†
AbstractRecently, the demand for a bio-absorbable coronary stent to promote recovery after an operation has increased. An option for such a stent is one made of a magnesium alloy, which has biodegradable properties. However, magnesium alloys have lower rigidity and lower ductility than other metals; as such, an appropriate stent structure is required to ensure radial rigidity. In this study, design parameters for an AZ31 magnesium alloy stent with sufficient radial rigidity were investigated. The necessary radial rigidity was determined by comparison tests against commercially available stents. The design parameters of the cell struts were selected and the optimum values to achieve high radial rigidity were investigated by means of elastic–plastic finite element analysis. Finally, a trial model stent based on the optimized design parameters was produced. It was confirmed that the model had sufficient radial rigidity, with no fracturing evident during crimping and expansion processes.
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Shimizu, I.; Wada, A.; Sasaki, M. A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics. Proceedings 2018, 2, 523.
Shimizu I, Wada A, Sasaki M. A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics. Proceedings. 2018; 2(8):523.Chicago/Turabian Style
Shimizu, Ichiro; Wada, Akira; Sasaki, Makoto. 2018. "A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics." Proceedings 2, no. 8: 523.
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