基于Jack人机仿真的下肢康复助行器设计与优化

Design and Optimization of Lower Limb Rehabilitation Walker Based on Jack Human-Machine Simulation

摘要: 目的：为提高行动不便者使用移动辅具的适配性，提出一种下肢康复助行器改良设计。方法：通过对下肢康复助行器的使用流程进行分析，确定其使用姿态问题，使用Jack仿真软件构建患者模型，模拟分析关键场景下的可触域、行动域、姿势负荷及能耗，并基于模拟结果对座便板、轮组结构、扶手高度与角度以及靠背支撑等部件进行优化设计。结果：优化后，患者对坐姿切换、座便器使用及助行器辅助行走这3个关键动作的操作步骤减少，姿势负荷降低，证明改良设计的人机工程学性能优异。结论：下肢康复助行器的人机改良案例为医疗康复产品设计提供了人机仿真参考，同时验证了Jack仿真技术在产品设计中的实用性和高效性。

Abstract: Objective: To improve the adaptability of mobile assistive devices for people with limited mobility, an improved design of a lower limb rehabilitation walker is proposed. Methods: By analyzing the usage process of the lower limb rehabilitation walker, the usage posture problems were identified. A patient model was constructed using Jack simulation software, and simulations were conducted to analyze the reachable area, movement range, posture load, and energy consumption of the patient in key usage scenarios. Based on these analysis results, targeted design optimizations were made to components such as the seat board, front and rear wheels, handrails, and backrest of the lower limb rehabilitation walker. Results: After analyzing the optimized design, it was found that the number of operation steps for the patient in three key actions—sitting posture switching, toilet seat usage, and assisted walking with the walker—was reduced, and the patient’s posture load was decreased, indicating good ergonomics of the improved design. Conclusion: Through the case of human-machine improvement of the lower limb rehabilitation walker, a reference case for human-machine simulation in the design of medical rehabilitation products is provided, and the practicality and high efficiency of Jack simulation technology are further demonstrated.