Inductively-coupled control unit for fully implantable middle ear hearing devices.

Area of Science:

• Biomedical Engineering
• Medical Devices
• Auditory Prosthetics

Background:

• Fully-implantable middle ear hearing devices (F-IMEHD) offer enhanced hearing for auditory impaired individuals.
• Current F-IMEHD require external controllers and non-invasive power transmitters for battery recharging.
• Internal batteries in F-IMEHD necessitate frequent recharging, limiting user convenience.

Purpose of the Study:

• To implement an inductively coupled control unit for F-IMEHD.
• To enable non-invasive battery recharging and control signal transmission to implanted devices.
• To reduce power consumption and increase recharging intervals for F-IMEHD.

Main Methods:

• Design of coupled antennas for efficient power and signal transfer.
• Development of a data protocol utilizing on-off keying (OOK) modulation.
• Integration of an external control unit to power the internal receiver, bypassing the internal battery for control signals.

Main Results:

• Successful implementation of an inductively coupled control unit.
• Demonstrated ability to transmit power and control signals to a F-IMEHD.
• Experimental verification of the system's performance in recharging and control signal delivery.

Conclusions:

• The developed control unit effectively recharges the internal battery and transmits control signals non-invasively.
• This system reduces the F-IMEHD's power consumption by externally powering the control signal receiver.
• The enhanced recharging strategy increases the operational interval between recharges, improving user experience.