A bone-guided cochlear implant CMOS microsystem preserving acoustic hearing

Xin Hong Qian, Yi Chung Wu, Tzu Yi Yang, Cheng Hsiang Cheng, Hsing Chien Chu, Wan Hsueh Cheng, Ting Yang Yen, Tsu Han Lin, Yung Jen Lin, Yu Chi Lee, Jia Heng Chang, Shih Ting Lin, Shang Hsuan Li, Tsung Chen Wu, Chien Chang Huang, Chia Fone Lee, Chia Hsiang Yang, Chung-Chih Hung, Tai-Shih Chi, Chien Hao LiuMing-Dou Ker, Chung-Yu Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations


In this paper, a bone-guided cochlear implant (BGCI) SOC microsystem is proposed and designed. The BGCI microsystem uses four or more electrodes placed on the bone surface of the cochlea and one on the round window to preserve partially the acoustic hearing. The external SOC of the BGCI processes the acoustic signals and generates stimulation patterns and command that are transmitted to the implanted chip through the 13.56MHz wireless power and bidirectional data telemetry. The implanted chip with 4-channel high-voltage-tolerant stimulator generates biphasic stimulation currents up to 800μA and sends back the power indication and electrode impedance error signals to the external SOC. Electrical tests on the fabricated BGCI has been performed. The in-vivo animal tests on guinea pigs has shown the evoked Wave III of EABR waveforms. The proposed BGCI can be applied to patients with high-frequency hearing loss, tinnitus, and dizziness.

Original languageEnglish
Title of host publication2017 Symposium on VLSI Circuits, VLSI Circuits 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9784863486065
StatePublished - 10 Aug 2017
Event31st Symposium on VLSI Circuits, VLSI Circuits 2017 - Kyoto, Japan
Duration: 5 Jun 20178 Jun 2017

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers


Conference31st Symposium on VLSI Circuits, VLSI Circuits 2017


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