The U.S. Food and Drug Administration has approved the first implantable device for people 18 and older with severe or profound sensorineural hearing loss of high-frequency sounds in both ears, but who can still hear low-frequency sounds with or without a hearing aid. The Nucleus Hybrid L24 Cochlear Implant System may help those with this specific kind of hearing loss who do not benefit from conventional hearing aids.Sensorineural hearing loss is the most common form of hearing loss and occurs when there is damage to the inner ear (cochlea).

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