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Related Experiment Video

Updated: May 9, 2026

Robotic Cochlear Implantation for Direct Cochlear Access
08:06

Robotic Cochlear Implantation for Direct Cochlear Access

Published on: June 16, 2022

Multicenter study with a direct acoustic cochlear implant.

Thomas Lenarz1, Joost W Zwartenkot, Christof Stieger

  • 1Clinic for Laryngology, Rhinology and Otology, Hannover Medical School, Hannover, Germany.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|August 8, 2013
PubMed
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The Codacs direct acoustic cochlear implant significantly improved hearing in patients with mixed hearing loss, enhancing sound perception and reducing hearing difficulty. This investigational device offers substantial benefits for individuals with otosclerosis.

Area of Science:

  • Otolaryngology
  • Audiology
  • Biomedical Engineering

Background:

  • Mixed hearing loss, often caused by otosclerosis, presents significant challenges for hearing aid users.
  • Previous stapes surgery may not fully restore hearing in these patients.
  • Direct acoustic cochlear implants offer a novel approach to address sensorineural and conductive hearing loss components.

Purpose of the Study:

  • To evaluate the clinical efficacy and safety of the Codacs direct acoustic cochlear implant.
  • To assess the impact of the device on audiological measures and patient-reported hearing difficulty.

Main Methods:

  • A prospective, multicenter study involving 15 patients with severe-to-profound mixed hearing loss.
  • Patients underwent implantation with the Codacs investigational device combined with stapedotomy and a conventional stapes prosthesis.

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  • Audiometric evaluations and the Abbreviated Profile of Hearing Aid Benefit questionnaire were administered preoperatively and 3 months postoperatively.

    • Main Results:

    • No significant changes in air and bone conduction thresholds were observed.
    • Significant improvements were noted in mean sound field thresholds (48 dB), word recognition scores (up to 78.2%), and a 27% decrease in hearing difficulty.
    • The Codacs device demonstrated a notable enhancement in aided hearing capabilities.

    Conclusions:

    • The Codacs investigational device provides substantial audiological benefits for patients with moderate-to-severe mixed hearing loss due to otosclerosis.
    • The direct acoustic cochlear implant shows promise as an effective treatment option for this patient population.