The ROB ECHO project aims to combine an imaging system with a robotic arm to enable the visualisation and guidance of the electrode beam during cochlear implantation (i.e. in the inner ear). This implant restores hearing perceptions of people with deafness when the conventional hearing aid is no longer able to compensate for hearing loss. The aim of this project is to improve the technique of implantation of the electrode beam in the cochlea and to limit post-operative risks to patients. The precise and controlled movement of the arm will not only allow to obtain images as close as possible to the cochlea in complete safety, but also to reconstruct images in 3 dimensions of the cochlea to assist the surgeon during the insertion of the implant electrodes. 2 academic teams in Montpellier therefore wish to develop the 1st surgical navigation tool allowing therapeutic acts at the internal ear level to be carried out under the control of ultrasound images guided by a robotic arm: 1/LIRMM 2/INM The project is carried out by INSERM (Institut National de la Santé et de la Recherche Médicale) in partnership with the University of Montpellier and the CNRS. The company Neurelec/OTICON MEDICAL is associated with this research project, which will take on an expert position linked to its activity in the development, manufacture and marketing of cochlear implants.