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A Vibrotactile Feedback Device for Seated Balance Assessment and Training
09:13

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Published on: January 20, 2019

Development of vibrating insoles.

Juha M Hijmans1, Jan H B Geertzen, Bart Schokker

  • 1Center for Rehabilitation, University Medical Center Groningen, Groningen, The Netherlands. j.m.hijmans@rev.umcg.nl

International Journal of Rehabilitation Research. Internationale Zeitschrift Fur Rehabilitationsforschung. Revue Internationale De Recherches De Readaptation
|November 3, 2007
PubMed
Summary

Vibrating insoles can enhance balance by providing a subsensory mechanical noise signal to the feet. This study details the optimal components for developing these balance-improving insoles.

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Area of Science:

  • Biomechanics
  • Human-Computer Interaction
  • Rehabilitation Engineering

Background:

  • Balance impairment affects healthy individuals and patients with conditions like stroke or diabetic neuropathy.
  • Vibrating insoles offer a potential non-invasive method to improve sensory feedback and balance.
  • Subsensory mechanical noise stimulation to the plantar surface is hypothesized to enhance postural control.

Purpose of the Study:

  • To describe the development requirements for vibrating insoles.
  • To identify suitable tactile actuators (tactors), insole materials, and noise generators.
  • To propose an optimal configuration for vibrating insoles designed to improve balance.

Main Methods:

  • Literature search for components of vibrating insoles.
  • Analysis of potential tactors: electromechanical tactors, piezo actuators, VBW32 skin transducer.
  • Evaluation of noise generator options: NTI Minirator MR1, portable MP3 player, custom-made generator.
  • Consideration of insole materials: foam, silicone, cork.

Main Results:

  • Vibrating insoles require tactors, a noise generator, and an amplifier to deliver a subsensory mechanical noise signal.
  • C2 electromechanical tactors, piezo actuators, or VBW32 skin transducers are viable tactor options.
  • Cork insoles with a leather layer, combined with a custom noise generator and specific tactors, represent an ideal solution.

Conclusions:

  • The development of vibrating insoles is feasible with identified components.
  • Optimal design involves specific tactors (C2 electromechanical, piezo, VBW32) and a custom noise generator.
  • A cork insole with a leather covering is recommended for housing the components for enhanced balance.