Investigation of Low-Current Direct Stimulation for Rehabilitation Treatment Related to Muscle Function Loss Using Self-Powered TENG System

Advanced Science
Jiahui WangChengkuo Lee

Abstract

Muscle function loss is characterized as abnormal or completely lost muscle capabilities, and it can result from neurological disorders or nerve injuries. The currently available clinical treatment is to electrically stimulate the diseased muscles. Here, a self-powered system of a stacked-layer triboelectric nanogenerator (TENG) and a multiple-channel epimysial electrode to directly stimulate muscles is demonstrated. Then, the two challenges regarding direct TENG muscle stimulation are further investigated. For the first challenge of improving low-current TENG stimulation efficiency, it is found that the optimum stimulation efficiency can be achieved by conducting a systematic mapping with a multiple-channel epimysial electrode. The second challenge is TENG stimulation stability. It is found that the force output generated by TENGs is more stable than using the conventional square wave stimulation and enveloped high frequency stimulation. With modelling and in vivo measurements, it is confirmed that the two factors that account for the stable stimulation using TENGs are the long pulse duration and low current amplitude. The current waveform of TENGs can effectively avoid synchronous motoneuron recruitment at the two stimulation...Continue Reading

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Citations

Feb 7, 2020·Journal of Stroke·Shi-Chun BaoRaymond Kai-Yu Tong
Dec 22, 2019·Micromachines·Jianxiong ZhuChengkuo Lee
Apr 8, 2020·Research : a Science Partner Journal·Zhe LiZhou Li
Dec 10, 2020·Bioelectronic Medicine·Youngjun ChoSanghoon Lee
May 4, 2021·Advanced Materials·Chihyeong WonTaeyoon Lee
May 21, 2021·Advanced Materials·Giorgio ContaJun Chen
Jul 18, 2021·Nature Communications·Hanjun RyuSang-Woo Kim

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