I-Corps: A generation-3 shape memory alloy actuated ankle foot orthosis

I-Corps：第三代形状记忆合金驱动踝足矫形器

• 批准号: 1343505
• 负责人: Mohammad Elahinia
• 金额: $ 5万
• 依托单位: University of Toledo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1343505&HistoricalAwards=false
• 关键词: Corps; generation; shape; memory; alloy

The proposed project will optimize the fabrication of an ankle foot orthosis (AFO) to address the needs of drop-foot patients. These patients are unable to dorsiflex their foot because of impaired muscle activity around the ankle. The project team has developed a prototype orthosis using a shape memory alloy (SMA) wire actuator. The actuator captures and releases energy during walking to provide dorsiflexion motion, which drop-foot patients' lack. The proposed research includes performing methodical study toward achieving super-elastic behavior in shape memory parts created using selective laser melting and developing a proof of concept shape memory hinge to capture and release energy to the ankle without the need to external sources of energy.If successful, the proposed research could have a significant impact on the advancement of active ankle foot orthosis. Every year a large number of individuals experience a loss of ability to dorsiflex the ankle due to disease or traumatic injury to the lower extremity that resulted from automobile accident or work-related causes. Of particular note, these last two conditions associated with foot drop (traumatic brain injury and traumatic lower extremity injury) are very common among soldiers.

拟议的项目将优化脚踝矫形器（AFO）的制造，以满足脚下患者的需求。这些患者由于脚踝周围的肌肉活动受损而无法背屈。项目团队使用形状内存合金（SMA）电线执行器开发了原型矫形器。执行器在步行过程中捕获并释放能量，以提供背屈运动，而脚下的患者缺乏。 拟议的研究包括进行有条不紊的研究，以实现使用选择性激光熔融创建的形状记忆零件中的超弹性行为，并开发出概念验证的形状记忆铰链，以捕获和释放能量到脚踝而无需外部能源。每年，由于疾病或因汽车事故或与工作相关的原因导致的下肢造成的疾病或创伤性伤害，大量个人会丧失背屈脚踝的能力丧失。尤其值得注意的是，士兵在士兵中非常普遍，这些与脚下掉落有关的最后两个条件非常普遍。