An Ultrasonically Powered and Controlled Ultra-High-Frequency Biphasic Electrical Neurostimulator

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Abstract

This paper presents the design of a neurostimulator performing biphasic ultra-high-frequency electrical stimulation while being driven from ultrasound energy. Unlike conventional constant current or constant voltage stimulators or state-of-the-art ultra-high-frequency stimulators, the system does not convert the input AC signal into regulated DC for storing power and supplying the elements of the circuits. Instead, it uses the received ultrasonic signal frequency (≥1 MHz) for electrically stimulating the tissue directly, and it achieves biphasic stimulation with external control and without storing extra power. This results in a highly efficient and miniature circuit, which has the potential to be used in bioelectronic medicine for stimulating small peripheral nerves deep inside the body. The operation of the circuit was first simulated in LTSpice using a lumped elements model for the impedance of the piezoelectric receivers and the load. Finally, a prototype was tested in vitro with commercial transducers and platinum-iridium electrodes as load.

Original languageEnglish
Title of host publication2018 IEEE Biomedical Circuits and Systems Conference (BioCAS)
EditorsE. Alarcon
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Electronic)978-1-5386-3603-9
ISBN (Print)978-1-5386-3604-6
DOIs
Publication statusPublished - 2018
Event2018 IEEE Biomedical Circuits and Systems Conference, BioCAS 2018 - Cleveland, United States
Duration: 17 Oct 201819 Oct 2018

Conference

Conference2018 IEEE Biomedical Circuits and Systems Conference, BioCAS 2018
CountryUnited States
CityCleveland
Period17/10/1819/10/18

Bibliographical note

Accepted author manuscript

Keywords

  • Bioelectronic medicine
  • Biphasic electrical stimulation
  • Neurostimulator
  • Ultra-high-frequency stimulation
  • Ultrasound

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