Multichannel asynchronous electrical stimulation device relieves muscle fatigue caused by stimulation therapy

Medical electronic devices using functional electrical stimulation can effectively treat hemiplegia patients who have lost muscle contraction function, but they are not widely used. The purpose of this study is to use low-frequency distributed asynchronous stimulation to alleviate muscle fatigue. We compared previous single-channel stimulation in the same tissue in space and frequency using multiple electrodes of the same muscle. On the whole, the synthetic stimulation effect of multi-channel ordered stimulation is consistent with that of single channel. Results: By comparing the fatigue parameters (muscle signal before and after stimulation, muscle contraction intensity, joint torque, etc.), multi-channel asynchronous stimulation reduced fatigue by 30% compared with single-channel stimulation. The problem of stimulation fatigue is further solved.