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Related Experiment Video

Updated: Oct 25, 2025

Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery

Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery

Published on: August 4, 2023

[Effect of electrode array type and insertion technique on the insertion force: in vitro cochlear model study].

J X Pan¹, H Jia¹, H Y Tan¹

¹Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200125, China Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200125, China.

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Chinese Journal of Otorhinolaryngology Head and Neck Surgery

|August 3, 2021

Summary

This summary is machine-generated.

Using slimmer electrode arrays and robotic assistance significantly reduces insertion force during cochlear implant procedures. Robot-assisted insertion offers superior force control compared to manual methods, enhancing safety and precision.

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Published on: June 16, 2022

Area of Science:

Biomedical Engineering
Neurosurgery
Medical Device Design

Background:

Minimally invasive electrode insertion is crucial for cochlear implant surgery.
Optimizing electrode design and insertion techniques can reduce surgical trauma.
Understanding insertion forces is key to improving electrode array performance.

Purpose of the Study:

To evaluate the impact of electrode array type and insertion technique on insertion force.
To provide data for optimizing electrode design for easier insertion.
To facilitate minimally invasive electrode insertion in cochlear implant procedures.

Main Methods:

Three Nurotron electrode arrays (Standard, Slim-medium, Slim-long) were tested.
Insertion into cochlear phantom models was performed manually and robot-assisted (medium and low speeds).
Real-time insertion forces were measured using ATI Nano 17 Ti sensors and analyzed statistically.

Main Results:

Insertion force increased with depth for all electrode types and techniques.
Slim-medium and slim-long electrodes showed significantly lower peak insertion forces than the standard electrode during manual insertion.
Robot-assisted insertion resulted in significantly lower peak force and force variation compared to manual insertion for all electrode types.

Conclusions:

Slimmer electrode arrays and robotic insertion techniques reduce insertion forces.
Robot assistance provides superior force control, potentially improving surgical outcomes.
Longer electrode arrays may present challenges for manual insertion precision.