一个被动的机制来解储能和回报在脚脚假肢:回收碰撞能量中的一个案例研究
Hashim A Quraishi1,2,3, Max K Shepherd3,4, Leo McManus2,3
1BioMechanical Engineering Department, Delft University of Technology, Delft, The Netherlands.
Wearable technologies
|March 15, 2024
概括
一种新的脱能量储存和回收 (DESR) 假肢设计旨在改善下肢截肢患者的行走性能. 这种新的假肢在步行周期中回收更多的能量,有可能恢复自然的脚功能.
科学领域:
- 生物医学工程 生物医学工程
- 生物力学 生物力学
- 假肢手术 假肢手术是一门专业.
背景情况:
- 下肢截肢显著减少了脚推卸工作,损害了行走性能.
- 传统的能量储存和返回 (ESR) 假肢提供部分补偿,提供大约30%的健康脚推卸工作.
- 需要新的假肢设计来返回更规范的机械能量水平.
研究的目的:
- 设计和评估一个脱的储能和回收 (DESR) 假肢.
- 增加机械推开工作,通过储存能量在脚跟打击和负载响应,并在终端姿势时返回它.
- 探索假肢独特的机械定制选项.
主要方法:
- 设计了一种DESR假肢,使用两个不同的凸轮形状,具有非线性扭矩角力学.
- 实现了定制的磁开关系统,在步行周期期间自动进行凸轮交换.
- 进行了基准表征,以评估能源脱和返回能力.
主要成果:
- 在DESR假肢中成功演示了能量储存和返回机制的脱.
- 该DESR机制捕获了脚跟撞击和负载响应时的能量,以便在以后返回.
- 机械损失尚未完全克服,能量回收不足以匹配健康的脚功能.
结论:
- 该DESR假肢显示出改善下肢假肢的能量回收和机械定制性的潜力.
- 需要进一步优化,以克服机械损失并实现规范的推离工作.
- 设计允许独特的功能,如增强的脚清除和可调节的能量释放率.
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