The cochlear implant, regardless of the manufacturer, is comprised of 2 parts:
The internal device is implanted surgically and has a magnet, receiver, and an electrode array. The receiver is surgically placed under the skin behind the ear. The electrode array is inserted into the cochlea. More recent internal devices contain magnets which are MRI compatible. Still, a cochlear implant recipient should always contact their physician prior to undergoing an MRI.
The external portion – called the speech processor – can come in a variety of sizes and wearing options.
Speech processors come in many styles including behind the ear, bodyworn, and single unit processors.
Cochlear implants enable individuals with severe to profound hearing loss to hear by receiving and processing sounds and speech they were unable to access via a hearing aid. The internal and external devices work together to change sound into electrical signals that stimulate the hearing nerve.
More information about specific cochlear implant manufacturers: