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Article

A Wirelessly Powered 4-Channel Neurostimulator for Reconstructing Walking Trajectory

1
Department of Micro-Nano Mechanical Science and Engineering, Nagoya University, Nagoya 464-8601, Japan
2
Department of Human Enhancement and Hand Surgery, Nagoya University, Nagoya 464-8601, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Cataldo
Sensors 2022, 22(19), 7198; https://doi.org/10.3390/s22197198
Received: 5 August 2022 / Revised: 10 September 2022 / Accepted: 19 September 2022 / Published: 22 September 2022
(This article belongs to the Section Wearables)
A wirelessly powered four-channel neurostimulator was developed for applying selective Functional Electrical Stimulation (FES) to four peripheral nerves to control the ankle and knee joints of a rat. The power of the neurostimulator was wirelessly supplied from a transmitter device, and the four nerves were connected to the receiver device, which controlled the ankle and knee joints in the rat. The receiver device had functions to detect the frequency of the transmitter signal from the transmitter coil. The stimulation site of the nerves was selected according to the frequency of the transmitter signal. The rat toe position was controlled by changing the angles of the ankle and knee joints. The joint angles were controlled by the stimulation current applied to each nerve independently. The stimulation currents were adjusted by the Proportional Integral Differential (PID) and feed-forward control method through a visual feedback control system, and the walking trajectory of a rat’s hind leg was reconstructed. This study contributes to controlling the multiple joints of a leg and reconstructing functional motions such as walking using the robotic control technology.
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Keywords: neurostimulation; wireless powering; implantable device neurostimulation; wireless powering; implantable device
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MDPI and ACS Style

Takeuchi, M.; Tokutake, K.; Watanabe, K.; Ito, N.; Aoyama, T.; Saeki, S.; Kurimoto, S.; Hirata, H.; Hasegawa, Y. A Wirelessly Powered 4-Channel Neurostimulator for Reconstructing Walking Trajectory. Sensors 2022, 22, 7198. https://doi.org/10.3390/s22197198

AMA Style

Takeuchi M, Tokutake K, Watanabe K, Ito N, Aoyama T, Saeki S, Kurimoto S, Hirata H, Hasegawa Y. A Wirelessly Powered 4-Channel Neurostimulator for Reconstructing Walking Trajectory. Sensors. 2022; 22(19):7198. https://doi.org/10.3390/s22197198

Chicago/Turabian Style

Takeuchi, Masaru, Katsuhiro Tokutake, Keita Watanabe, Naoyuki Ito, Tadayoshi Aoyama, Sota Saeki, Shigeru Kurimoto, Hitoshi Hirata, and Yasuhisa Hasegawa. 2022. "A Wirelessly Powered 4-Channel Neurostimulator for Reconstructing Walking Trajectory" Sensors 22, no. 19: 7198. https://doi.org/10.3390/s22197198

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