noun
cochlear implant
A surgically implanted electronic device that provides a sense of sound to a person with severe hearing loss.
See also: 内耳
人工内耳の手術を受けるかどうか、家族で話し合った。
We discussed as a family whether to undergo cochlear implant surgery.
補聴器 is a hearing aid that amplifies sound, while 人工内耳 is a surgically implanted device that directly stimulates the auditory nerve.
Compound of 人工 (artificial) and 内耳 (inner ear).