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Related Experiment Video

Updated: May 27, 2026

Voltage Biasing, Cyclic Voltammetry, & Electrical Impedance Spectroscopy for Neural Interfaces
07:51

Voltage Biasing, Cyclic Voltammetry, & Electrical Impedance Spectroscopy for Neural Interfaces

Published on: February 24, 2012

Rechargeable internal neural stimulators--is there a problem with efficacy?

Anwen M Harries1, Shannon Major, Mandeep Sandhu

  • 1Department of Neurosurgery, University of British Columbia, Vancouver, BC, Canada. anwen.harries@gmail.com

Neuromodulation : Journal of the International Neuromodulation Society
|November 15, 2011
PubMed
Summary

Most patients are satisfied with rechargeable internal neural stimulators (rINS) for deep brain stimulation, despite some experiencing reduced efficacy or recharging issues. The majority would still recommend this advanced neurostimulation technology.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Clinical Neurology

Background:

  • Rechargeable internal neural stimulators (rINS) represent an advancement in deep brain stimulation (DBS) technology.
  • Early adoption of rINS necessitates evaluation of patient experience and treatment outcomes.

Purpose of the Study:

  • To assess patient satisfaction with rechargeable internal neural stimulators (rINS).
  • To evaluate the clinical efficacy of rINS in an early patient cohort.
  • To identify challenges associated with the use of rINS.

Main Methods:

  • Observational study involving nine patients with rINS, previously treated with non-rechargeable systems.
  • Patient-reported outcomes assessed via questionnaires and the SF-36 quality of life survey.

Related Experiment Videos

Last Updated: May 27, 2026

Voltage Biasing, Cyclic Voltammetry, & Electrical Impedance Spectroscopy for Neural Interfaces
07:51

Voltage Biasing, Cyclic Voltammetry, & Electrical Impedance Spectroscopy for Neural Interfaces

Published on: February 24, 2012

  • Clinical efficacy measured by the total electrical energy delivered (TEED) by the rINS.

    • Main Results:

    • A 22% reduction in rINS efficacy was observed in some patients.
    • 78% of patients encountered recharging difficulties due to poor contact.
    • Despite challenges, 89% of patients would recommend rINS to others.

    Conclusions:

    • The majority of patients reported satisfaction with their rechargeable internal neural stimulator.
    • Efficacy reduction in 22% of patients is comparable to non-rechargeable system replacements.
    • Close post-replacement monitoring of rINS is crucial for potential parameter adjustments.