基于人体扫描的个性化气动软体手套,提升手部精细动作康复效果
Soft Robotic Exogloves for Dexterous Mobility -- Towards Personalized Rehabilitation

- 通过拓扑扫描定制手套结构,贴合个体手部形态
- 实验验证了对掌指关节和近端指间关节的精准压力控制
- 适合需要精细运动康复或假肢辅助的研究者与临床医生
软体气动外手套可提供手部康复与辅助。传统适配依赖标准化测量,难以满足精细动作需求。本文设计并制造了一款个性化气动驱动软体外手套,基于手部拓扑扫描进行硅胶模具浇铸。采用有限元分析(FEA)评估执行器弯曲及人机交互中的接触力,基于简化个性化生物力学手指模型。通过静态与动态参考的气压控制实验,实现用户手指的主动屈曲。制造结果表明,拓扑扫描可精确匹配手部解剖结构;仿真显示个性化设计支持人机交互力分析,且在非理想近节指骨压缩下仍可实现充分关节活动度。气压测试表明,压力控制能实现对掌指关节(MCP)与近端指间关节(PIP)的准确、定向运动,具备固有刚性。多组设计对比发现,放松应变限制层可改善执行器与手指关节的对齐性。本研究实现了结构贴合性、关节拓扑、人机交互建模与时变驱动-变形特性的个性化,为优化外手套设计以支持精细操作辅助与神经肌肉康复奠定基础。
原文摘要 · Abstract (English)
Soft robotic exogloves can provide hand rehabilitation and assistance. Fitting these gloves often relies on standardized measurements not tailored to the individual, limiting their effectiveness, especially for fine articulation necessary for dexterous manipulation. We present the design, fabrication, modeling, and testing of a personalized pneumatically-actuated soft robotic exoglove. The glove was fit to a user's hand with topological scans and fabricated with silicone mold casting. Finite element analysis (FEA) was performed to evaluate actuator bending and forces from physical human-robot interaction (pHRI) between an actuator and a simplified personalized biomechanical finger model. Pneumatic pressure control experiments were conducted to flex the user's finger with static and dynamic references. Fabrication results show that topological scans enable precise tailoring to hand anatomy. Simulations showed that anatomical personalization enables analysis of pHRI contact forces, and results indicate sufficient joint mobilization with non-ideal compression on the proximal phalanx. Pneumatic testing indicates that pressure control allows accurate and targeted mobility of the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints with intrinsic stiffness. Testing of multiple designs showed that relaxing the strain-limiting layer improves actuator-to-finger joint alignment during actuation. This work presents personalization to the human hand in structural conformability, joint topology, modeling of pHRI contact, and time-dependent actuation-deformation profiles. This lays a groundwork for informing exoglove design optimization to enable assistance in dexterous manipulation and neuromuscular rehabilitation of fine motor skills.
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