A round window-excited artificial middle ear actuator with monitorable initial pressure

Abstract

A round window excitation type manual middle lug actuator with the initial pressure capable of being monitored comprises a supporting device, a distance adjusting device, a shell and a telescopic device, the front end of the supporting device is connected with the distance adjusting device, the shell and the front end of the distance adjusting device form a moving pair, the whole telescopic deviceis located in the shell, and the front end of the telescopic device directly acts on a round window film; The supporting device is fixed on a bone wall opposite to the round window membrane through an implantation operation; Telescopic device comprises an expansion device, a load indicator, a spring and a coupling rod, the spring is arranged in the center of the rear end of the expansion piece and abuts against the rear wall of the inner side of the shell, the load indicator is arranged at the top of the rear end of the expansion piece, the expansion piece moves in the axial direction of theshell, the coupling rod is arranged at the front end of the expansion piece and directly acts on the round window film, and the maximum diameter of the front end of the coupling rod is 1 mm. The support rigidity of the actuator is improved, the loss of the output quantity of the actuator is reduced, the hearing compensation effect of the actuator is improved, and the initial pressure between the actuator and a round window film can be monitored.

Description

technical field [0001] The invention relates to a round window vibration-exciting artificial middle ear actuator whose initial pressure can be monitored, and belongs to the technical field of hearing aids. Background technique [0002] Hearing impairment is one of the common diseases affecting people's daily life. According to the mechanism of hearing impairment, hearing impairment can be divided into conductive hearing impairment and sensorineural hearing impairment. With the continuous deepening of otology research and the rapid development of ear microsurgery, most patients with conductive hearing loss can improve their hearing through surgery, but for sensorineural hearing loss, traditional hearing aids are generally used to improve hearing. . However, traditional hearing aids have problems such as low output gain (unable to compensate for a high degree of hearing loss), acoustic feedback, and ear canal blockage. Many patients are unwilling to wear them, and those who a...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a round window-excited artificial middle ear actuator whose initial pressure can be monitored. There is a phenomenon that the output end of the actuator is against the bone wall around the round window membrane; it can be fixed on the bone wall opposite the round window through a mechanical structure, thereby providing a stable support stiffness for the actuator; at the same time, it is possible to monitor the relationship between the actuator and the The initial pressure of the coupling between the round window membranes, to avoid the problem of excessive initial pressure causing damage to the round window membrane or insufficient initial pressure resulting in insufficient coupling

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