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Related Experiment Video

Updated: Jun 25, 2025

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
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A Wireless Battery-Free Implant With Optical Telemetry for In Vivo Cortical Stimulation.

Abed Benbuk1, Diogo Moniz-Garcia2, Daniel Gulick1

  • 1Department of Electrical, Computer, Energy Engineering, Arizona State University, Tempe AZ 85287 USA.

IEEE Sensors Letters
|May 31, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel, thin, wireless brain stimulator that avoids direct brain contact for enhanced safety. It uses visible light for tracking, demonstrating successful motor response in rodent models.

Keywords:
Sensor applicationsbattery-freecortical stimulationdura substituteimplantoptical telemetrywirelesswireless power transfer (WPT)

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Implantable Devices

Background:

  • Brain stimulation is crucial for treating neurological disorders.
  • Current implants face challenges with safety, power, and monitoring.
  • Minimally invasive and safe stimulation methods are needed.

Purpose of the Study:

  • To develop a wireless, battery-free brain implant for stimulation.
  • To ensure device safety by preventing direct contact with brain tissue.
  • To implement optical telemetry for real-time monitoring of stimulation.

Main Methods:

  • Fabrication of a 100 μm-thick implant on a biocompatible substrate.
  • Encapsulation with a transparent layer for optical telemetry.
  • In vivo testing in rodent models to assess stimulation efficacy and safety.

Main Results:

  • The implant successfully triggered motor responses in rodents.
  • Visible light telemetry allowed for observable brightness tracking through the skin.
  • The device demonstrated safe operation without direct brain contact.

Conclusions:

  • This wireless, battery-free implant offers a safer alternative for brain stimulation.
  • Optical telemetry provides a non-invasive method for monitoring stimulation.
  • The technology shows promise for advanced neurological therapies.