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Related Experiment Video

Updated: Jun 17, 2026

Robotic Cochlear Implantation for Direct Cochlear Access
08:06

Robotic Cochlear Implantation for Direct Cochlear Access

Published on: June 16, 2022

An automated insertion tool for cochlear implants: another step towards atraumatic cochlear implant surgery.

Andreas Hussong1, Thomas S Rau, Tobias Ortmaier

  • 1Institute of Mechatronic Systems (former Institute of Robotics), Leibniz Universität Hannover, Appelstrasse 11a, 30167, Hannover, Germany. andreas.hussong@imes.uni-hannover.de

International Journal of Computer Assisted Radiology and Surgery
|December 25, 2009
PubMed
Summary

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An automated insertion tool was developed to preserve hearing for hybrid electro-acoustic stimulation (EAS). The tool successfully inserted cochlear implant electrodes within the target range in both model and human cochlea specimens.

Area of Science:

  • Otorhinolaryngology
  • Biomedical Engineering
  • Neurosurgery

Background:

  • Preserving residual hearing is critical for hybrid electro-acoustic stimulation (EAS).
  • Minimally invasive electrode insertion techniques are essential for atraumatic procedures.
  • Automating electrode insertion may enhance precision and reduce trauma.

Purpose of the Study:

  • To introduce an automated tool for atraumatic cochlear implant electrode insertion.
  • To evaluate the tool's efficacy in achieving target insertion angles for EAS.

Main Methods:

  • Development and design of an automated electrode insertion tool.
  • Performance evaluation using 30 insertions in an artificial scala tympani model and 20 in a human cochlea specimen.
  • Assessment of insertion depth angle via photographic and X-ray documentation, utilizing the AOS technique.

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Main Results:

  • The automated tool achieved a mean insertion depth angle of 410 degrees in the lubricated model.
  • A mean insertion depth angle of 330 degrees was achieved in the human cochlea specimen.
  • Final insertion depth angles were within the target range for standard cochlear implant surgery.

Conclusions:

  • The automated insertion tool demonstrates capability for precise electrode placement.
  • This tool offers a novel, minimally invasive approach for automated cochlear implant electrode insertion.
  • The technology has the potential to improve outcomes for patients undergoing EAS.