首页> 外文期刊>Journal of Materials Engineering and Performance >Nitinol Stent Fatigue in a Peripheral Human Artery Subjected to Pulsatile and Articulation Loading
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Nitinol Stent Fatigue in a Peripheral Human Artery Subjected to Pulsatile and Articulation Loading

机译:镍钛合金支架疲劳在人脉周围和关节运动负荷下的周围人动脉。

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摘要

Nitinol self-expanding stents are used to treat peripheral occluded vessels such as the superficial femoral artery or the carotid. The complex vessel articulation requires a stent device that is flexible and kink resistant yet durable. The present study shows how the latest advances in commercially available engineering software tools permit engineering simulations of the many aspects of the Nitinol stent design and analysis. Two stent geometries are evaluated: a helical type stent design, and a more traditional straight strut, with multiple crowns design. The fatigue performance of the two stents is compared. The results show that advanced nonlinear finite element simulations and fatigue predictions of the Nitinol stent are possible today inside realistic simulated human arteries. The finite element analysis software used in this study is SimXpert, Marc, and Mentat (MSC Software, Santa Ana, CA).
机译:镍钛诺自膨式支架用于治疗周围闭塞的血管,例如股浅动脉或颈动脉。复杂的血管关节需要支架装置,该支架装置是柔性的并且抗扭结但耐用。本研究显示了商用工程软件工具中的最新进展如何允许对镍钛诺支架设计和分析的许多方面进行工程仿真。评估了两种支架的几何形状:螺旋型支架设计和更传统的直撑杆,带有多个冠部设计。比较了两个支架的疲劳性能。结果表明,如今在现实的模拟人体动脉中,镍钛诺支架的高级非线性有限元模拟和疲劳预测成为可能。本研究中使用的有限元分析软件是SimXpert,Marc和Mentat(MSC软件,加利福尼亚州圣安娜)。

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