Computational and experimental investigation into mechanical performances of Poly-L-Lactide Acid (PLLA) coronary stents

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• 作者：Qian Wang^a ; Gang Fang^a ; ^b ; ^{fangg@tsinghua.edu.cn} ; Yinghong Zhao^c ; Guohui Wang^c ; Tao Cai^c
• 关键词：Biodegradable stent ; PLLA ; Finite element simulation ; Radial property ; Bending flexibility
• 刊名：Journal of the Mechanical Behavior of Biomedical Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：65
• 期：Complete
• 页码：415-427
• 全文大小：10133 K
• 卷排序：65

文摘

Constitutive constants of PLLA were determined by tests and applied in FE modeling. Prediction of the stent’s mechanical deformation was verified by in-vitro experiments. The optimized local structure decreased the strain accumulation of the PLLA stent. The mechanical behaviors of PLLA stent were proven comparable with commercial stents.