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Wireless Power Delivery Techniques for Miniature Implantable Bioelectronics.

Amanda Singer1, Jacob T Robinson1

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Advanced Healthcare Materials
|June 11, 2021
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Summary
This summary is machine-generated.

Wireless power transfer is crucial for battery-free bioelectronic implants. Different technologies balance power, size, and distance, enabling personalized electronic medicine advancements.

Keywords:
bioelectronicsimplanted devicesreviewwireless power transfer

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Area of Science:

  • Bioelectronic Medicine
  • Implantable Devices
  • Wireless Power Transfer

Background:

  • Implanted bioelectronic technologies are advancing personalized electronic medicine.
  • Power delivery to these devices presents significant challenges.
  • Wireless, battery-free systems offer advantages but face inherent tradeoffs.

Purpose of the Study:

  • To review wireless power transfer technologies for bioelectronic implants.
  • To analyze tradeoffs between power, miniaturization, depth, alignment, and distance.
  • To inform the development of future bioelectronic medical devices.

Main Methods:

  • Review of six wireless power transfer technologies: inductive coupling, radio frequency, mid-field, ultrasound, magnetoelectrics, and light.
  • Analysis of each technology against five key factors: power, miniaturization, depth, alignment tolerance, and transmitter distance.
  • Contextualization of technologies within safety limits for biological applications.

Main Results:

  • Each wireless power transfer technology presents unique advantages and limitations regarding the five key factors.
  • No single technology universally optimizes all factors, necessitating tailored approaches.
  • Tradeoffs are fundamental and depend on specific device requirements and biological targets.

Conclusions:

  • Multiple wireless power transfer modalities are essential for diverse bioelectronic implant applications.
  • Understanding these tradeoffs is critical for designing effective and safe implantable devices.
  • This review provides a framework for future bioelectronic technology development and biological applications.