Pre-bent type artificial cochlea electrode

Abstract

The invention discloses a pre-bent type artificial cochlea electrode. The pre-bent type artificial cochlea electrode comprises a wire electrode convergence beam formed by M sets of wire electrodes, a plurality of electrode contacts and M elastic rubber rings, wherein every two adjacent wire electrodes are insulated from each other. The first elastic rubber ring is used for wrapping the first set of wire electrodes. In this way, the M elastic rubber ring is used for wrapping all the sets of wire electrodes. Each wire electrode is made of Ni-Ti shape memory alloy and has two memory shapes so that the whole wire electrode convergence beam can have two shapes as well. When the temperature is the normal cochlea temperature of the human body, the wire electrodes are bent, and the whole wire electrode convergence beam is in a spirochete shape which is the same as the shape of the human cochlea; when the temperature is 0 DEG C, the wire electrodes are smooth and straight, and the whole wire electrode convergence beam is accordingly smooth and straight. When the wire electrodes are bent, the electrode contacts are drawn to move accordingly. The pre-bent type artificial cochlea electrode is simple in structure and can be conveniently implanted.

Description

Technical field [0001] The invention relates to the field of biomedical engineering bionics, in particular to a pre-curved cochlear artificial electrode. Background technique [0002] The human ear can be divided into three parts: inner ear, middle ear and outer ear. In a normal listening process, sound waves pass through the external auditory canal, vibrating the tympanic membrane, causing vibrations in the tympanic membrane and the ossicles in the middle ear. This vibration causes the fluid in the inner ear or cochlea to fluctuate, so that thousands of tiny auditory nerve cells called inner hair cells produce electrical signals. The signals are transmitted to the brain along the auditory nerve and converted into a Meaningful information. [0003] For patients with severe or very severe sensorineural hearing loss, the tiny inner hair cells in the cochlea are damaged. The reasons are either congenital, that is, the baby is born with congenital loss of inner hair cells, or acquire...

AI Technical Summary

Problems solved by technology

The above methods of pre-bending electrodes have certain limitations, so that the electrode array cannot achieve the best working condition.

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