Design of a joint-coupled orthosis for FES-aided gait

A hybrid functional electrical stimulation (FES)/orthosis system is being developed which combines two channels of (surface-electrode-based) electrical stimulation with a computer-controlled orthosis for the purpose of restoring gait to spinal cord injured (SCI) individuals (albeit with a stability...

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Main Authors: Farris, R.J., Quintero, H.A., Withrow, T.J., Goldfarb, M.
Format: Conference Proceeding
Language:English
Subjects:
Electrical stimulation
Feedback control
Friction
Hip
Knee
Neuromuscular stimulation
Spinal cord
Springs
Stability
Testing
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creator Farris, R.J.
Quintero, H.A.
Withrow, T.J.
Goldfarb, M.
description A hybrid functional electrical stimulation (FES)/orthosis system is being developed which combines two channels of (surface-electrode-based) electrical stimulation with a computer-controlled orthosis for the purpose of restoring gait to spinal cord injured (SCI) individuals (albeit with a stability aid, such as a walker). The orthosis is an energetically passive, controllable device which 1) unidirectionally couples hip to knee flexion; 2) aids hip and knee flexion with a spring assist; and 3) incorporates sensors and modulated friction brakes, which are used in conjunction with electrical stimulation for the feedback control of joint (and therefore limb) trajectories. This paper describes the hybrid FES approach and the design of the joint coupled orthosis. Preliminary experiments are presented which test the joint coupling concept and assess the extent of quadriceps fatigue imposed by the bias spring and joint coupling.
doi_str_mv 10.1109/ICORR.2009.5209623
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1945-7901
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Electrical stimulation
Feedback control
Friction
Hip
Knee
Neuromuscular stimulation
Spinal cord
Springs
Stability
Testing
title Design of a joint-coupled orthosis for FES-aided gait
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