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Related Experiment Video

Updated: May 30, 2026

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
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Remote electrical stimulation by means of implanted rectifiers.

Antoni Ivorra1

  • 1Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain. antoni.ivorra@gmail.com

Plos One
|August 19, 2011
PubMed
Summary
This summary is machine-generated.

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This study proposes a new power method for implantable medical devices. Miniature implants can rectify high-frequency currents into low-frequency stimulation currents, overcoming miniaturization challenges for electrical stimulation.

Area of Science:

  • Biomedical Engineering
  • Medical Device Technology
  • Implantable Devices

Background:

  • Miniaturization of active implantable medical devices is limited by current power supply methods like batteries and inductive couplers.
  • These conventional power sources are often larger than the implant circuitry, hindering device size reduction.

Purpose of the Study:

  • To propose and demonstrate a novel method for powering miniaturized active implantable medical devices for electrical stimulation.
  • To overcome the size limitations imposed by traditional power sources.

Main Methods:

  • Numerical simulations to demonstrate the generation of low-frequency stimulation currents from high-frequency bursts using a diode-like device.
  • In vivo proof-of-concept experiment using an anesthetized earthworm with an implanted commercial diode.

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Related Experiment Videos

Last Updated: May 30, 2026

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
07:13

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing

Published on: October 20, 2021

Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa
08:17

Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa

Published on: September 27, 2018

Chronic Transcranial Electrical Stimulation and Intracortical Recording in Rats
10:51

Chronic Transcranial Electrical Stimulation and Intracortical Recording in Rats

Published on: May 11, 2018

Main Results:

  • Low-frequency currents capable of stimulating excitable tissues were successfully generated by a miniature diode-like device.
  • High-frequency currents used for power transfer caused only innocuous heating, without thermal damage or stimulation.
  • The feasibility of creating injection-deliverable stimulation capsules (<500 µm diameter) using current microelectronic techniques was shown.

Conclusions:

  • Miniature implants can function as rectifiers, converting remote high-frequency power into localized low-frequency stimulation currents.
  • This approach effectively addresses the miniaturization bottleneck for active implantable medical devices used in electrical stimulation.
  • The proposed method offers a viable pathway for developing highly miniaturized, injectable medical implants.