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In-body current path manipulation with minimal attenuation.

Donghyeon Kang1,2, Byung-Joon Park1,2, Joon-Ha Hwang2,3

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This study introduces a new method for wireless power transfer neuromodulation using an in-body focusing electrode. This technique enhances therapeutic efficacy by concentrating currents for targeted neural system modulation.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Wearable Technology

Background:

  • Wireless power transfer (WPT) offers a battery-free alternative for neuromodulation implants.
  • Current WPT methods face challenges including low efficiency, shallow penetration, and safety concerns, limiting therapeutic efficacy.

Purpose of the Study:

  • To develop an advanced targeted neuromodulation technology by manipulating and concentrating in-body currents.
  • To overcome the limitations of conventional WPT-based neuromodulation.

Main Methods:

  • Utilized triboelectric current generated by human movement, characterized by low frequency and high impedance.
  • Implanted a focusing electrode to direct and concentrate the triboelectric current towards the target neural area.
  • Evaluated current attenuation irrespective of electrode size, implantation site, and depth.

Main Results:

  • Demonstrated successful concentration of triboelectric current with minimal attenuation.
  • Confirmed therapeutic efficacy in modulating damaged neural systems.
  • Validated the safety of the developed neuromodulation technology.

Conclusions:

  • The developed in-body current focusing technique significantly enhances targeted neuromodulation.
  • This technology shows potential for next-generation neuromodulation therapies, improving efficacy and safety.
  • Overcomes key limitations of existing wireless power transfer neuromodulation systems.