title: A case of cochlear implant with internal mechanical failure.
abstract: Cochlear implantation has been performed since the 1970s and has been proven to be an effective treatment for profoundly deaf people. In some cases re-implantation has also been reported due to trauma causing implant damage, mechanical failure, extrusion, and wound infections, or device upgrade. We present a case of a 9-year-old boy with a cochlear implant in which mechanical failure occurred after a blow to his temporal region. The clinical presentation and radiographic imaging findings suggested that the cause of mechanical failure was internal failure. We performed cochlear re-implantation to the same ear and it worked well. The explanted device analysis by the manufacturer concluded that the device had failed due to a cracked hybrid integrated circuit.
authors: Department of Otolaryngology-Head & Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan. tohno@ent.kuhp.kyoto-u.ac.jp
authors: Tsunehisa
authors: T
authors: Ohno
authors: Takehiro
authors: T
authors: Iki
authors: Aiko
authors: A
authors: Taniguchi
authors: Nobuya
authors: N
authors: Fujiki
authors: Kouzou
authors: K
authors: Ohta
authors: Juichi
authors: J
authors: Ito
mesh_terms: D002648:Child; D003054:Cochlear Implants; D003056:Cochlear Nerve / Q000000981:diagnostic imaging; D006312:Hearing Loss, Bilateral / Q000150:complications* / Q000175:diagnosis / Q000601:surgery*; D006319:Hearing Loss, Sensorineural / Q000150:complications* / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D007805:Language Development Disorders / Q000150:complications* / Q000175:diagnosis*; D008297:Male; D011474:Prosthesis Design; D014057:Tomography, X-Ray Computed