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Cochlear Implant 人工耳蜗

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Cochlear Implant 人工耳蜗. 12.05. 演讲:李奇楠 PPT 制作:杨俊哲 资料收集:贾小瑞. Introduction of Cochlear Implant. - PowerPoint PPT Presentation

Text of Cochlear Implant 人工耳蜗

Cochlear Implant

Cochlear Implant12.05

PPT Introduction of Cochlear Implant A cochlear implant (CI) is a surgically implanted electronic device that provides a sense of sound to a person who is profoundly deaf or severely hard of hearing. Cochlear implants are often called bionic ears. The implant is surgically placed under the skin behind the ear.Cochlear implant

Parts of the cochlear implantExternal():one or more microphones which picks up sound from the environmenta speech processor() splits the sound into channels and sends the electrical sound signals through a thin cable to the transmittera transmitter(), which is a coil held in position by a magnet placed behind the external ear, and transmits power and the processed sound signals across the skin to the internal device by electromagnetic induction()Internal():a receiver ()and stimulator ()secured in bone beneath the skin, which converts the signals into electric impulses() and sends them through an internal cable to electrodesan array of up to 22 electrodes()which send the impulses to the nerves in the scala tympani and then directly to the brain through the auditory nerve system(). Candidateshaving severe to profound sensorineural hearing impairment in both ears()having a functioning auditory nervehaving lived at least a short amount of time without hearinghaving good speech, language, and communication skills, or in the case of infants and young children, having a family willing to work toward speech and language skills with therapyhaving no medical reason to avoid surgeryhaving realistic expectations about resultshaving the support of family and friends

TonotopyBasilar membraneCochlear implant as worn by user

History17905020Andr DjournoCharles Eyris1961William HouseDjourno1969HouseJack UrbanHouseGraeme Clark1978Rod Saunders1984199019982002218124620068201051632006

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