Rebuilding motor function of the spinal cord based on functional electrical stimulation

Rebuilding the damaged motor function caused by spinal cord injury is one of the most serious challenges in clinical neuroscience.The function of the neural pathway under the damaged sites can be rebuilt using functional electrical stimulation technology.In this study,the locations of motor function sites in the lumbosacral spinal cord were determined with functional electrical stimulation technology.A three-dimensional map of the lumbosacral spinal cord comprising the relationship between the motor function sites and the corresponding muscle was drawn.Based on the individual experimental parameters and normalized coordinates of the motor function sites,the motor function sites that control a certain muscle were calculated.Phasing pulse sequences were delivered to the determined motor function sites in the spinal cord and hip extension,hip flexion,ankle plantarflexion,and ankle dorsiflexion movements were successfully achieved.The results show that the map of the spinal cord motor function sites was valid.This map can provide guidance for the selection of electrical stimulation sites during the rebuilding of motor function after spinal cord injury.

一种串联式三自由度髋关节机构的设计与分析

分析了人体髋关节运动规律和运动形式,提出了一种串联式三自由度外骨骼机器人髋关节机械结构。外骨骼机器人髋关节屈/伸主"迈腿"运动采用平面四杆机构来实现其大范围的运动,并利用矢量分析法分析了液压缸输出位移、速度、加速度与屈/伸运动的角度、加速度、角加速度的关系,应用Ds Solid Works软件自带的Solid Works Motion运动仿真插件对其进行仿真分析,得出其关系线图,为外骨骼机器人髋关节设机械结构计提供一定的设计依据。