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Wireless control of functional electrical stimulation systems

Z Matjacić1, M Munih, T Bajd

  • 1Faculty of Electrical Engineering, University of Ljubljana, Slovenia.

Artificial Organs
|March 1, 1997
PubMed
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This study introduces a wireless control system for functional electrical stimulation (FES) to aid spinal cord injured (SCI) patients in walking. The new telemetry system enhances current FES rehabilitation by removing wired connections, improving patient mobility.

Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Neuroscience

Background:

  • Current spinal cord injury (SCI) rehabilitation often relies on wired functional electrical stimulation (FES) systems for gait restoration.
  • Patients manually control FES systems using wired crutch pushbuttons, limiting mobility and natural movement during gait training.
  • Existing systems require a hardwired connection between the crutch controls and the FES unit, posing practical challenges.

Observation:

  • A novel surface-mount technology-based telemetry system operating at 40 MHz was developed.
  • This system enables wireless control of FES by transmitting coded signals from crutch-mounted pushbuttons.
  • A waist-worn receiver connected to the stimulator facilitates seamless signal reception.

Findings:

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  • The developed telemetry system successfully provides wireless control for FES in SCI patients.
  • It allows for the restoration of standing and simple gait by wirelessly managing the gait cycle phases.
  • The system effectively transfers coded signals from the crutch transmitter to the receiver unit.

    • Implications:

    • Wireless FES control can significantly improve the mobility and independence of individuals with spinal cord injuries.
    • This technology offers a more practical and less cumbersome rehabilitation experience compared to wired systems.
    • The advancement holds potential for broader applications in assistive technologies for neurological disorders.