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The Cochlea

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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Related Experiment Video

Updated: Jun 18, 2026

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

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Published on: April 21, 2013

CochleRob: Parallel-Serial Robot to Position a Magnetic Actuator around a Patient's Head for Intracochlear Microrobot

Housseyne Nadour¹, Alexis Bozorg Grayeli^2,3, Gérard Poisson⁴

¹Centre National de la Recherche Scientifique (CNRS), GIPSA-Lab, École Doctorale Électronique, Électrotechnique, Automatique, Traitement du Signal (ED EEATS), 38100 Grenoble, France.

Sensors (Basel, Switzerland)

|March 30, 2023

Summary

A new robotic solution, CochleRob, offers a safer method for drug delivery to the cochlea, treating hearing loss without invasive procedures. Mathematical models support its function for inner ear drug administration.

Keywords:

cochlea control drug administration hearing loss magnetic actuator medical robot microrobots remote drug delivery

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Last Updated: Jun 18, 2026

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Robotic Cochlear Implantation for Direct Cochlear Access

Robotic Cochlear Implantation for Direct Cochlear Access

Published on: June 16, 2022

Area of Science:

Biomedical Engineering
Robotics
Otolaryngology

Background:

Hearing loss is often caused by cochlear damage.
Current drug delivery methods to the inner ear can be invasive, risking further damage.
Targeted drug delivery to the cochlea is crucial for effective treatment.

Purpose of the Study:

To introduce CochleRob, a novel robotic solution for administering super-paramagnetic antiparticles into the human cochlea.
To develop a safer drug administration method for the cochlea, avoiding catheter or cochlear implant insertion.
To develop and validate mathematical models (forward, inverse, dynamic) for robot-assisted inner ear drug delivery.

Main Methods:

Design of a novel robot architecture (CochleRob) considering human ear anatomy specifications (workspace, DOF, compactness, rigidity, accuracy).
Development and validation of forward, inverse, and dynamic mathematical models for robot control.
Utilizing super-paramagnetic antiparticles as drug carriers for targeted delivery.

Main Results:

CochleRob meets critical design specifications for cochlear application.
Validated mathematical models enable precise robot control for drug administration.
Demonstrated a non-invasive approach for delivering therapeutic agents to the inner ear.

Conclusions:

CochleRob presents a promising robotic solution for targeted drug administration into the human cochlea.
This technology offers a safer alternative to invasive methods for treating hearing loss.
The developed mathematical models are essential for the successful clinical translation of this robotic system.