Cochlear implant

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Cochlear implant

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Cochlear implant

  1. 1. Cochlear implant
  2. 2. Definition • Cochlear implants are surgically placed electrical device that receive sound and transmit the resulting electrical signals to electrodes implanted in the cochlea of the ear. • The signals stimulate cochlea, allowing patient to hear. • It is also known as Bionic ear.
  3. 3. Parts of cochlear implant • External – Microphone – Speech processor – Transmitter • Internal – Receiver and stimulator – An array of up to 22 electrodes
  4. 4. Mechanism • Cochlear implants bypass damaged portion of the ear & directly stimulate the auditory nerve and later the brain recognizes it as sound.
  5. 5. Ideal candidate for cochlear implantation • Having severe to profound sensori-neural deafness in both ears. • Having a functioning auditory nerve. • Approximately 70+ decibel hearing loss. • Having good speech, language and communication skills. • Not benefitting enough from other kinds of hearing aids.
  6. 6. • Having no medical reason to avoid surgery. • Living in or desiring to live in the “hearing world”. • Having realistic expectations about result. • Physically and mentally normal person. • No medical contra-indications.
  7. 7. Complications • Wound healing problems viz skin breakdown, infection at surgical site and device coming out. • CSF leakage • Meningitis • Vertigo (temporary dizziness) • Device failure
  8. 8. The End

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