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Articles linked to this work by shared authors, journal, and citation graph.

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Rare Problems with Rotating Magnets in Cochlear Implants and How They Can Be Solved Without Surgery.

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Related Experiment Video

Updated: Dec 17, 2025

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
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Hearing Preservation With a New Atraumatic Lateral Wall Electrode.

Thomas Lenarz1, Andreas Buechner, Anke Lesinski-Schiedat

  • 1Department of Otolaryngology, Hannover Medical School, Hannover, Germany.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|June 23, 2020
PubMed
Summary

The new HiFocus SlimJ electrode array effectively preserves low-frequency hearing in most cochlear implant patients. This electrode facilitates atraumatic insertion and accurate placement, showing promising initial hearing preservation results.

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Neurosurgery

Background:

  • Preserving residual hearing is crucial in cochlear implantation.
  • Electrode array design significantly impacts hearing preservation.
  • A novel thin lateral wall electrode array (HiFocus SlimJ) was developed based on human cochlear anatomy.

Purpose of the Study:

  • To evaluate initial hearing preservation outcomes with the HiFocus SlimJ electrode array.
  • To assess insertion depth and speech perception with the new electrode array.

Main Methods:

  • Twenty subjects with residual hearing received the SlimJ electrode array.
  • Slow insertion via the round window, guided by electrocochleography.
  • Postoperative imaging (CT) for scalar location and insertion depth analysis.

Main Results:

  • 85% of subjects maintained hearing within 30 dB HL at low frequencies 1 month post-surgery.
  • 50% of subjects preserved hearing within 15 dB HL.
  • Mean insertion depth was 393 degrees, with all contacts located in the scala tympani.

Conclusions:

  • The SlimJ electrode array allows for atraumatic insertion and precise placement.
  • Initial hearing preservation results are encouraging.
  • Further studies with larger datasets and long-term follow-up are planned.