Circuit Design Considerations for Power-Efficient and Safe Implantable Electrical Neurostimulators

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Abstract

This paper presents the main circuit design considerations for power-efficient and safe implantable electrical neurostimulators. Related to medical applications, low-frequency (LF) stimulation for generating new action potentials and kilohertz-frequency alternating current (KHFAC) for blocking unwanted neural activity are introduced, respectively. For implantable medical devices, the choice of energy source type is important as it has an influence on the total size of the device and device comfort, thereby affecting the quality of life of the patients. In order to lengthen the lifetime of the stimulator, power-efficient designs using the ultra-high frequency (UHF) pulsed technique are proposed. To avoid tissue damage and electrode degradation caused by residual charge on the electrode-tissue interface (ETI), charge balancing (CB) techniques are adopted. Active CB control is shown to be a promising method both for LF and KHFAC stimulation.

Original languageEnglish
Title of host publication2020 IEEE 11th Latin American Symposium on Circuits & Systems (LASCAS)
PublisherIEEE
Number of pages4
ISBN (Electronic)978-1-7281-3427-7
ISBN (Print)978-1-7281-3428-4
DOIs
Publication statusPublished - 2020
Event11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020 - San Jose, Costa Rica
Duration: 25 Feb 202028 Feb 2020

Conference

Conference11th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2020
CountryCosta Rica
CitySan Jose
Period25/02/2028/02/20

Keywords

  • active charge balancing.
  • implantable electrical neurostimulator
  • power efficiency
  • safety

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