A bone conduction hearing aid vibration device implanted in the body

Abstract

The invention relates to a bone conduction hearing aid vibration device implanted in the body. The vibration device includes a first vibrator, a second vibrator, a reed, a reed pressure plate, a magnetic conductive sheet, a coil skeleton, a coil, a magnet, a fixing frame, and a shell; The first vibrator has a stepped structure, and the first vibrator includes a bottom cylinder, a first boss, a second boss, and a top cylinder; the outer peripheral surface of the second boss is equipped with a second vibrator and a magnet; The first vibrator is placed in a fixed frame; the side wall of the fixed frame is provided with an outlet hole; the fixed frame has an open structure at both ends, and both ends are provided with counterbore holes; the counterbore holes are bonded with reed and reed pressure plate; the outer peripheral surface of the magnet is also equipped with a coil bobbin; coils are wound on the coil bobbin; both ends of the coil bobbin are equipped with magnetic conductive sheets; , Fixed plate; its advantages are: high-frequency vibration, high vibration efficiency, and large amplitude.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a bone conduction hearing aid vibration device implanted in the body. Background technique [0002] There are two forms of sound transmission, air conduction and bone conduction, but the final place where the sound is heard is the auditory system of the inner ear. The following are two different transmission paths for sound. Human speech and the sound from TV and radio are transmitted to the external auditory canal by vibrating the surrounding air, and then transmitted to the middle ear through the tympanic membrane. The vibration will become stronger in the middle ear, and finally touch the cochlea floating in the lymphatic fluid. Auditory hair cells and auditory nerve, so that you can hear the sound. Bone conduction does not pass through the outer ear and middle ear, but converts the audio signal into a vibration signal, which is directly transmitted to the inner ear ...

AI Technical Summary

Problems solved by technology

[0009] The core part of the bone conduction hearing aid implanted in the body is the vibration device. The vibration device of the existing bone conduction hearing aid implanted in the body is a vibrating plate or a vibrating plate. The vibrating plate or vibrating plate vibrates in a changing magnetic field to make the skull vibrate, but there is The following disadvantages: 1. The amplitude of the vibrating plate or vibrating plate is small, the impact on the skull is small, the vibration is not obvious, and the vibration efficiency is low; 2. The vibrating plate or vibrating plate has low vibration frequency and is not suitable for high-frequency vibration; 3. The vibrating plate or vibrating plate is not suitable for high-frequency vibration; The vibration plate has a large vibration contact area, the impact force is not concentrated, and the sensitivity is low

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