FREQUENCY SEPARATOR FOR COCHLEA IMPLANT USING PIEZOELECTRIC THIN FILM AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a frequency separator manufactured by forming on top of a basilar membrane implant, a piezoelectric thin film having a characteristic of generating electricity when receiving pressure, for simulating the characteristics of a basilar membrane of a living organism which vibrates to the frequency of a specific sound, and by sealing the basilar membrane implant and fluid inside a main body. The present invention provides a frequency separator having a frequency separating ability, in which, when a sound wave vibrates the fluid, a transformation occurs to the piezoelectric thin film due to a mechanical vibration of the fluid and generates an electric signal, and according to the frequency of the sound wave, the electric signal is delivered to an auditory nerve through individual electrodes and delivers information to a brain stem. The present invention provides a frequency separator for a cochlea implant which does not need an internal or an external battery due to generation of the piezoelectric thin film.