Cochlear implant

Cochlear implants are a surgically implanted small electronic device that provides the sensation of sound for people with severe hearing loss. They first started being used in the 1970s.

Image: Blausen.com staff (2014). "Medical gallery of Blausen Medical 2014". WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436.