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设计可编程铁磁软元结构,用于最小侵入性内血管治疗

Ran Zhuang¹, Jiawei Tian¹, Apostolos Tassiopoulos²

¹Department of Mechanical Engineering, State University of New York at Stony Brook, Stony Brook, New York, USA, 11794.

Proceedings of the ... ASME Design Engineering Technical Conferences. ASME Design Engineering Technical Conferences

|September 23, 2024

概括

这项研究引入了具有负波桑数的新型磁激活结构.

科学领域:

生物医学工程生物医学工程
材料科学材料科学材料科学
机械工程机械工程

背景情况:

最少侵入性内血管治疗 (MIET) 面临着当前设备的局限性,导致诸如动脉瘤再通道化和门泄漏等问题.
现有的设备在不完整的处理和低于最佳的密封性方面扎,需要改进的治疗解决方案.

研究的目的:

引入MIET设备的新型元结构设计,使用具有负波桑比率 (NPR) 的回入蜂结构.
从铁磁软材料开发磁激活结构 (MAS),以实现可调节的机械性能和远程控制.
评估这些MAS-NPR元结构的性能和潜力,以加强血管干预.

主要方法:

拓优化和圆柱形映射被用来设计NPR元结构.
铁磁软材料被用来创建磁激活结构 (MAS).
进行了磁力机械模拟和对原型梁的实验测试,以验证模型并分析变形行为.

主要成果:

经过验证的模型表明,平面矩阵NPR超材料在磁场下垂直和水平扩展.
圆柱形NPR结构在受到磁场的影响时显示出同时的轴向和辐射膨胀.
该研究证实了对铁磁软材料的磁力机械模拟的准确性.

结论:

拟议的方法显示了开发先进的磁激活MIET设备的巨大潜力.
这些设备提供了更好的生物相容性,减少了不良反应,并在血管治疗中增强了治疗结果.
将铁磁软材料集成到元结构中,可以设计具有可调节机械性能的支架,用于复杂的内血管干预.

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