Published February 11, 2022 | Version v1
Conference paper Open

A Fully-Implantable Mems-Based Autonomous Cochlear Implant

Authors/Creators

  • 1. METU

Description

This paper reports a fully implantable, MEMS-based, low-power, energy harvesting, next generation cochlear implant (CI). The implant includes multi-frequency piezoelectric transducers for sound detection and energy harvesting, rectification and signal conditioning electronics, and RF coil for fitting and external powering. These units have outstanding performances: multi-channel transducer can generate 50.7 mVpp (under 100 dB SPL) and recover the daily sound speech signals; signal conditioning IC consumes outstandingly low power (<500 µW) while converting outputs signals of the transducer to biphasic pulses; piezoelectric energy harvester has the highest power density (1.5 × 10−3 W/cm3) with generated 16.25 µW under 120 dB-A sound input; energy harvester IC, provides up to 500% more power compared to an ideal full-bridge rectifier.

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A_Fully-Implantable_Mems-Based_Autonomous_Cochlear_Implant.pdf

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Additional details

Funding

European Commission
FLAMENCO - A Fully-Implantable MEMS-Based Autonomous Cochlear Implant 682756