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Multichannel biphasic muscle stimulation system for post stroke rehabilitation

Multichannel biphasic muscle stimulation system for post stroke rehabilitation
Multichannel biphasic muscle stimulation system for post stroke rehabilitation
We present biphasic stimulator electronics developed for a wearable functional electrical stimulation system. The reported stimulator electronics consist of a twenty four channel biphasic stimulator. The stimulator circuitry is physically smaller per channel and offers a greater degree of control over stimulation parameters than existing functional electrical stimulator systems. The design achieves this by using, off the shelf multichannel high voltage switch integrated circuits combined with discrete current limiting and dc blocking circuitry for the frontend, and field programmable gate array based logic to manage pulse timing. The system has been tested on both healthy adults and those with reduced upper limb function following a stroke. Initial testing on healthy users has shown the stimulator can reliably generate specific target gestures such as palm opening or pointing with an average accuracy of better than 4 degrees across all gestures. Tests on stroke survivors produced some movement but this was limited by the mechanical movement available in those users’ hands.
2079-9292
1-13
Ward, Tyler
42223a20-f8bd-4299-9e87-5d980dadabf1
Grabham, Neil
00695728-6280-4d06-a943-29142f2547c9
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Wei, Yang
c6d13914-4f35-459c-8c25-8f8b77b7c5b3
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Power, Conor
f35fb1f2-81b7-410a-be14-e990f259542c
Tudor, Michael
46eea408-2246-4aa0-8b44-86169ed601ff
Yang, Kai
f1c9b81d-e821-47eb-a69e-b3bc419de9c7
Ward, Tyler
42223a20-f8bd-4299-9e87-5d980dadabf1
Grabham, Neil
00695728-6280-4d06-a943-29142f2547c9
Freeman, Christopher
ccdd1272-cdc7-43fb-a1bb-b1ef0bdf5815
Wei, Yang
c6d13914-4f35-459c-8c25-8f8b77b7c5b3
Hughes, Ann-Marie
11239f51-de47-4445-9a0d-5b82ddc11dea
Power, Conor
f35fb1f2-81b7-410a-be14-e990f259542c
Tudor, Michael
46eea408-2246-4aa0-8b44-86169ed601ff
Yang, Kai
f1c9b81d-e821-47eb-a69e-b3bc419de9c7

Ward, Tyler, Grabham, Neil, Freeman, Christopher, Wei, Yang, Hughes, Ann-Marie, Power, Conor, Tudor, Michael and Yang, Kai (2020) Multichannel biphasic muscle stimulation system for post stroke rehabilitation. Electronics, 9 (7), 1-13. (doi:10.3390/electronics9071156).

Record type: Article

Abstract

We present biphasic stimulator electronics developed for a wearable functional electrical stimulation system. The reported stimulator electronics consist of a twenty four channel biphasic stimulator. The stimulator circuitry is physically smaller per channel and offers a greater degree of control over stimulation parameters than existing functional electrical stimulator systems. The design achieves this by using, off the shelf multichannel high voltage switch integrated circuits combined with discrete current limiting and dc blocking circuitry for the frontend, and field programmable gate array based logic to manage pulse timing. The system has been tested on both healthy adults and those with reduced upper limb function following a stroke. Initial testing on healthy users has shown the stimulator can reliably generate specific target gestures such as palm opening or pointing with an average accuracy of better than 4 degrees across all gestures. Tests on stroke survivors produced some movement but this was limited by the mechanical movement available in those users’ hands.

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electronics-09-01156-v2 - Version of Record
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More information

Accepted/In Press date: 14 July 2020
e-pub ahead of print date: 17 July 2020
Published date: July 2020
Additional Information: In Special Issue: Design and Application of Biomedical Circuits and Systems

Identifiers

Local EPrints ID: 442638
URI: http://eprints.soton.ac.uk/id/eprint/442638
ISSN: 2079-9292
PURE UUID: 61fe0264-f518-4709-8d97-f4581b180581
ORCID for Neil Grabham: ORCID iD orcid.org/0000-0002-6385-0331
ORCID for Yang Wei: ORCID iD orcid.org/0000-0001-6195-8595
ORCID for Ann-Marie Hughes: ORCID iD orcid.org/0000-0002-3958-8206

Catalogue record

Date deposited: 21 Jul 2020 16:55
Last modified: 07 Oct 2020 06:17

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Contributors

Author: Tyler Ward
Author: Neil Grabham ORCID iD
Author: Christopher Freeman
Author: Yang Wei ORCID iD
Author: Conor Power
Author: Michael Tudor
Author: Kai Yang

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