Development of a prototype of portable FES rehabilitation system for relearning of gait for hemiplegic subjects

Healthcare Technology Letters

article

Takashi Watanabe¹  Shun Endo¹  Ryusei Morita¹ 

[1] Graduate School of Biomedical Engineering, Tohoku University

关键词: medical disorders;    gait analysis;    biomedical measurement;    electromyography;    pressure sensors;    patient rehabilitation;    gait relearning;    hemiplegia;    portable functional electrical stimulation rehabilitation system;    portable FES rehabilitation system;    gait information measurement;    walking;    foot drop correction;    gait event detection method;    inertial sensor;    pressure sensor;    electromyogram signal;    tibialis anterior muscle;    ankle dorsiflexion;   

DOI  :  10.1049/htl.2016.0045

学科分类：肠胃与肝脏病学

来源: Wiley

【 摘 要 】

This study aimed at developing a prototype of portable FES rehabilitation system for relearning gait pattern of healthy subjects, which can measure gait information during walking applying electrical stimulation for foot drop correction or providing timing information. A gait event detection method using an inertial sensor attached on the foot was determined based on gait of healthy subjects from simultaneous measurements with pressure sensors. From the result of comparing the detected gait event timings with EMG signal of the tibialis anterior muscle during walking of healthy subjects, the toe off and the foot flat timings detected by the inertial sensor were suggested to be useful to determine the stimulation timing for the foot drop correction. The gait event detection method was implemented in a prototype of portable FES rehabilitation system consisting of an 8-inch tablet-type device, 2 inertial sensors and an electrical stimulator. The portable system was examined with hemiplegic subjects under the conditions of FES foot drop correction and inducing voluntary effort to develop ankle dorsiflexion at the timing given by electrical stimulation with small stimulation intensity. The system was considered to be useful for gait rehabilitation of hemiplegia using FES foot drop correction or inducing voluntary effort.

【 授权许可】

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