A Neurostimulator with Wireless Bidirectional Communication for Controlling Muscle Contraction Force using Electromyography

This paper presents a wirelessly powered neurostimulator with wireless bidirectional communication to control muscle contraction. The transmitter device sends the information about neural stimulation to the receiver device, while the receiver device sends the measured electromyography (EMG) inside a body to the transmitter device. Based on the measured EMG, the neural stimulation was adjusted to achieve the target EMG. The muscle contraction force can be controlled by EMG control. The EMG estimation error by the developed device was less than 2% when the muscle activity was active. This study can contribute to force control of paralyzed patients’ bodies.