Four kinds.

According to a search on the official website of EarTimes, a cochlear implant is an electronic device that uses an external speech processor to convert sound into a certain coded form of electrical signals. The electrode system implanted in the body directly excites the auditory nerve to restore or reconstruct the hearing of deaf people.

Function.

There are four types of cochlear implants: Austrian cochlear implants, Australian Cochlear cochlear implants, American AB cochlear implants, and Hangzhou Norkang cochlear implants.

Cochlear implants have been included in the payment scope of the Guangzhou Medical Insurance Coordination Fund, with a maximum reimbursement of 76,000 yuan, and will be implemented from June 2018.