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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

Clinical validation study of percutaneous cochlear access using patient-customized microstereotactic frames.

Robert F Labadie1, Ramya Balachandran, Jason E Mitchell

  • 1Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee 37232, USA. robert.labadie@vanderbilt.edu

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|December 19, 2009
PubMed
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This study shows that patient-customized microstereotactic frames, or "microtables," can be used for percutaneous cochlear implant (PCI) surgery. The microtable system successfully guided drilling to the cochlea while avoiding vital anatomy in all cases.

Area of Science:

  • Neurosurgery
  • Otolaryngology
  • Medical Device Engineering

Background:

  • Percutaneous cochlear implant (PCI) surgery requires precise drilling to the cochlea, avoiding critical structures.
  • Traditional methods may pose risks due to the proximity of vital anatomy.

Purpose of the Study:

  • To evaluate the feasibility of using patient-customized microstereotactic frames (microtables) for PCI surgery.
  • To assess the accuracy and safety of the microtable system in guiding surgical trajectories.

Main Methods:

  • A prospective study involving 13 patients (18 ears) undergoing cochlear implantation.
  • Patient-specific microtables were designed using CT scans and fiducial markers.
  • Trajectory accuracy was validated by drilling simulations, measuring distances to the facial nerve and chorda tympani.

Related Experiment Videos

Last 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

Main Results:

  • Microtables were fabricated rapidly (under 5 minutes) using CNC milling.
  • Successful access to the cochlea via the facial recess was achieved in all 18 cases.
  • Mean distances to vital structures were minimal: 1.20 mm from the facial nerve and 1.25 mm from the chorda tympani.

Conclusions:

  • Patient-customized microstereotactic frames (microtables) are feasible for PCI surgery.
  • The microtable system demonstrates safe and accurate trajectory guidance, minimizing risks to vital anatomy.