A FULLY-IMPLANTABLE MEMS-BASED AUTONOMOUS COCHLEAR IMPLANT

KÜLAH H., Ulusah H., Chamanian S., Batu A., UĞUR M. B., Yuksel M. B., ...Daha Fazla

35th IEEE International Conference on Micro Electro Mechanical Systems Conference (IEEE MEMS), Tokyo, Japonya, 9 - 13 Ocak 2022, ss.396-399 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/mems51670.2022.9699689
  • Basıldığı Şehir: Tokyo
  • Basıldığı Ülke: Japonya
  • Sayfa Sayıları: ss.396-399
  • Anahtar Kelimeler: Fully Implantable Cochlear Implant, MEMS, Acoustic Transducer, Acoustic Energy Harvester, Low Power Electronics
  • Gazi Üniversitesi Adresli: Evet

Özet

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 mV(pp) (under 100 dB SPL) and recover the daily sound speech signals; signal conditioning IC consumes outstandingly low power (<500 mu W) while converting outputs signals of the transducer to biphasic pulses; piezoelectric energy harvester has the highest power density (1.5 x 10(-3) W/cm(3)) with generated 16.25 mu W under 120 dB-A sound input; energy harvester IC, provides up to 500% more power compared to an ideal full-bridge rectifier.