Cochlear implants are electronic devices that can give people with severe nerve deafness the sensation of hearing. They usually include a microphone, a sound processor and a transmitter outside the body, and electronic circuits implanted inside the body, which send electrical currents to the inner ear. At FDA, electrical engineers, electrochemists, neurologists, infection control experts and material scientists work together to help make sure cochlear implants are safe and effective. For more on cochlear implants and other medical devices, visit http://www.fda.gov/medicaldevices
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