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Fiber-optic Implantation for Chronic Optogenetic Stimulation of Brain Tissue
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Delivering optical power to subcutaneous implanted devices.

Sahar Ayazian1, Arjang Hassibi

  • 1ECE Department, University of Texas at Austin, TX 78712, USA ayaz@mail.utexas.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 19, 2012
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel, MRI-compatible method to power implantable devices using subcutaneous photovoltaic (PV) cells. This system harvests light energy, offering a feasible solution for low-power medical electronics.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Energy Harvesting

Background:

  • Implantable medical devices require reliable power sources.
  • Existing power delivery methods can be limited by MRI compatibility and invasiveness.
  • Light energy harvesting offers a potential alternative for powering subcutaneous electronics.

Purpose of the Study:

  • To present a new, easy-to-implement, and MRI-compatible power delivery system for implantable devices.
  • To utilize subcutaneous photovoltaic (PV) cells for harvesting light energy.
  • To demonstrate the feasibility of powering embedded electronics or recharging batteries of implanted devices.

Main Methods:

  • Development of a subcutaneous photovoltaic (PV) cell system.
  • Integration of PV cells with CMOS chip technology.
  • Testing of the system under ambient light conditions for power harvesting capabilities.

Main Results:

  • Successful implementation and testing of a CMOS chip based on the proposed concept.
  • Demonstration of μW power harvesting from mm(2)-size PV cells in ambient light.
  • Confirmation that harvested power levels are adequate for many low-power applications.

Conclusions:

  • The presented approach offers a viable, MRI-compatible method for powering implantable devices.
  • Subcutaneous PV cells can effectively harvest light energy for biomedical applications.
  • This technology holds promise for advancing the capabilities of low-power implantable electronics.