| 生物可降解聚合物血管支架膨胀性能有限元分析 |
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| 引用本文： | 赵丹阳,顿锁,田慧卿,王敏杰,于同敏,刘永云.生物可降解聚合物血管支架膨胀性能有限元分析[J].大连理工大学学报,2014,54(1):54-59. |
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| 作者姓名： | 赵丹阳 顿锁 田慧卿 王敏杰 于同敏 刘永云 |
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| 作者单位： | 大连理工大学精密与特种加工教育部重点实验室 |
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| 基金项目： | “九七三”国家重点基础研究发展计划资助项目(2012CB025905)；国家自然科学基金资助项目(51175060,51275071)；中央高校基本科研业务费专项资金资助项目(DUT12JB10,DUT13ZD105). |
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| 摘 要： | 血管支架最有潜力的发展方向是生物可降解聚合物血管支架,而支架的膨胀性能直接影响血管支架的质量和应用.利用有限元方法,采用von Mises屈服和各向同性强化准则,通过与316L不锈钢和WE43镁合金两种支架材料进行对比,分析了聚左旋乳酸(PLLA)材料支架的膨胀性能.结果表明,PLLA新型血管支架具有良好的均匀膨胀性、轴向短缩性和柔顺性,但其回弹性能有待改善.
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| 关 键 词： | 生物可降解 聚合物血管支架 膨胀性能 有限元分析 各向同性强化准则 |
Finite element analysis of expansion performance of biodegradable polymer stents |
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| ZHAOKGDanyang,KGDUNKGSuo,KGTIANKGHuiqing,KGWANGKGMinjie,KGYUKGTongmin,KGLIUKGYongyun.Finite element analysis of expansion performance of biodegradable polymer stents[J].Journal of Dalian University of Technology,2014,54(1):54-59. |
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| Authors: | ZHAOKGDanyang KGDUNKGSuo KGTIANKGHuiqing KGWANGKGMinjie KGYUKGTongmin KGLIUKGYongyun |
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| Institution: | ZHAO Dan-yang;DUN Suo;TIAN Hui-qing;WANG Min-jie;YU Tong-min;LIU Yong-yun;Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education,Dalian University of Technology; |
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| Abstract: | Biodegradable polymer stent is becoming a promising stent, and its expansion performance significantly affects the quality and application of stent. Based on the von Mises yield and isotropic hardening criteria, compared with 316L stainless steel stent and WE43 magnesium alloy stent, the expansion performance of poly L-lactic acid (PLLA) stent was analyzed via the finite element method. It is found that the new PLLA stent has better uniform expansion, foreshortening and flexibility than the other two stents, but the recovery performance needs to be improved. |
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| Keywords: | biodegradable polymer stents expansion performance finite element analysis isotropic hardening criteria |
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