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Related Experiment Video

Updated: Aug 18, 2025

Performing Intracochlear Electrocochleography During Cochlear Implantation
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Robot-Assisted Electrode Insertion in Cochlear Implantation Controlled by Intraoperative Electrocochleography-A Pilot

Wojciech Gawęcki1,2, Andrzej Balcerowiak2, Paulina Podlawska2

  • 1Department of Otolaryngology and Laryngological Oncology, Poznan University of Medical Sciences, 60-355 Poznan, Poland.

Journal of Clinical Medicine
|December 11, 2022
PubMed
Summary

Robotic surgery using the RobOtol® system safely inserted cochlear implant electrodes. Intraoperative electrocochleography (ECochG) confirmed electrode placement and helped preserve residual hearing in patients.

Keywords:
cochlear implantelectrocochleographyresidual hearingrobot

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Area of Science:

  • Otologic surgery
  • Medical robotics
  • Neuro-otology

Background:

  • Robotics has advanced otologic surgery for over 20 years.
  • Current research focuses on precise stapes surgery, minimally invasive cochlear access, and gentler cochlear implant electrode insertion.
  • Robotic systems offer potential for improved outcomes in cochlear implantation.

Purpose of the Study:

  • To evaluate the efficacy and safety of the RobOtol® otologic robot for cochlear implant (CI) electrode insertion.
  • To assess the utility of intraoperative electrocochleography (ECochG) during robotic CI surgery.
  • To determine the impact of robotic insertion on the preservation of residual hearing.

Main Methods:

  • A prospective pilot study involving two adult patients undergoing cochlear implantation with the Advanced Bionics HiFocus™ Mid-Scala electrode array.
  • The RobOtol® surgical robot was used for electrode insertion.
  • Intraoperative and postoperative ECochG measurements were performed using the AIM™ system to assess electrode function and hearing preservation.

Main Results:

  • The RobOtol® system facilitated safe and accurate insertion of CI electrodes in both patients.
  • Credible ECochG responses were obtained post-insertion, correlating with preoperative and postoperative bone conduction thresholds.
  • ECochG at one month post-surgery indicated preservation of residual hearing in both patients.

Conclusions:

  • The RobOtol® surgical robot enables precise, safe, and gentle insertion of cochlear implant electrodes.
  • Integrating intraoperative ECochG with robotic cochlear implantation provides real-time feedback for optimizing electrode placement.
  • This combined approach may enhance the preservation of residual hearing during cochlear implantation.