A cochlear implant is an electronic device surgically placed in both ears to treat the patients who are severely deaf or are suffering from tinnitus. It works on the inner ear that has been damaged. In recent times, it is also being used for acquired deafness on an experimental basis.
The difference between a cochlear implant and other hearing aids is that it sends sound signals to the brain instead of sending signals to the hair cells of the cochlea.
The external ear receives sound and transmits the sounds via the ear drum to the three middle ear ossicles to the hair cells of the cochlea. The cochlear nerve then stimulated transmits signals to the brain which is perceived as sound .
Though hearing loss is just inability to hear for the patient and his/her family, there are different types of hearing disability. Understanding these types helps in setting the right kind of expectations for recovery time and cost.
The process of cochlear implantation is done under general anaesthesia. A cut is made behind the ear. The mastoid bone is opened and an electrode array is placed into the cochlea. Post that, the dressing is done. Bacterial meningitis vaccination is recommended before the procedure.
This procedure includes implanting an electronic medical device, which replaces the functioning of a damaged ear. The cochlear/hearing implant includes following parts:
Being able to hear clearly is a happy moment for the patients. However, apart from enabling hearing cochlear implant offers many additional advantages, including
The process of Cochlear Implantation takes about 2 hours. The patient is discharged the very same day in case there is no complication.
The following are indications for the cochlear implant procedure :
The procedure should not be done under the following conditions :
Complications associated with the procedure both immediate and delayed:
Going back to normal life may take time depending on the patient’s condition, it varies from patient to patient. The effectiveness of the implant depends on: