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Two-Way Communication Digital Power Controllers for Wireless Retinal Prosthesis Systems.

Ruhaifi Bin Abdullah Zawawi¹, Jungsuk Kim^2,3

¹Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, SAINS@USM, Level 1 Block C, No 10, Persiaran Bukit Jambul, Bayan Lepas 11900, Malaysia.

Sensors (Basel, Switzerland)

|April 23, 2022

Summary

This summary is machine-generated.

New digital power controllers enable two-way communication for wireless retinal prosthetics, enhancing power efficiency and reliability for implantable medical devices.

Keywords:

digital power controller implantable medical devices retinal prosthesis wireless power telemetry

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Area of Science:

Biomedical Engineering
Implantable Medical Devices
Digital Control Systems

Background:

Power management is critical for implantable medical devices, especially wireless retinal prosthetics, to prevent malfunctions and ensure patient safety.
One-way communication in implantable devices leads to uncertain power levels, risking system failure.
Efficient power management is essential for reliable operation and patient well-being.

Purpose of the Study:

To develop power-efficient digital controllers for wireless retinal prosthetic systems.
To enable reliable two-way communication for improved power status monitoring.
To prevent system breakdown caused by inefficient power management in implantable devices.

Main Methods:

Designed three digital power controllers: forward and back telemetry control unit, power control unit, and preamble control unit.
These controllers simultaneously managed class-E amplifier input power, provided command data to stimulators, and monitored implanted device power levels.
Implemented and verified the digital power control system using a field-programmable gate array (FPGA) and a wireless telemetry system.

Main Results:

The developed digital power controllers successfully enabled simultaneous control of amplifier input power, command data delivery, and power level monitoring.
Generated back telemetry data provided crucial power status feedback, addressing the limitations of one-way communication.
The implemented system demonstrated effective performance in a wireless telemetry setup.

Conclusions:

The proposed digital power controllers significantly improve power management in wireless retinal prosthetics.
Achieving two-way communication enhances the reliability and safety of implantable medical devices.
This technology offers a robust solution for power-efficient and dependable wireless prosthetic systems.