带有表面肌电反馈功能的电刺激系统

Electrical Stimulation System with Surface Electromyography Feedback

目前,多种电刺激治疗仪器应用于偏瘫患者肌肉功能恢复,但这些设计普遍存在反馈参数单一、信息变化不同步和显示不直观等缺陷。因此,该文设计了一种基于Lab VIEW虚拟仪器开发平台的带有反馈功能的电刺激系统。该系统结合了多通道肌电信号实时采集和电刺激器等硬件系统,实现了较广的电刺激频率、脉宽和电流强度的调节范围,全程采集肌电信号,同时提供i EMG、CCR、RMS和MPF等多种表面肌电特征参数。初步实验对系统的有效性和稳定性进行了验证。该系统可以帮助医师客观了解不同患者的不同肌肉状况,探索合适的电刺激参数,制定个性化的治疗方案。

Currently, various kinds of electrical stimulation equipment are used in the rehabilitation of muscle function for patients with hemiplegia, but many defects can be found in those designs, for example, insufficient feedback parameter, unsynchronized information, unintuitive display and so on. Therefore, this study introduces an electrical stimulation system with surface electromyography （sEMG） feedback based on LabVIEW, which combines with multi-channel sEMG acquisition, electrical stimulator and other hardware system. This system can not only provide a wide electrical stimulation parameters range for frequency, pulse width and intensity, but also acquire sEMG during the treatment. Meanwhile, this system can compute iEMG, CCR, RMS and MPF in real-time. The verification results shows that the whole system is effective and stable. This system can help physicians observe the muscle condition of different patients, who can explore suitable electrical stimulation parameters to design individualized treatment projects.