A fixed actuator in a round window niche and its fixing device

Abstract

The invention relates to a fixed actuator in a round window niche, comprising a sleeve, a fixing support device and a telescoping device. The front end of the sleeve is provided with a circumferentialpartition plate and the rear end is provided with a clamping table. The fixing support device comprises an expansion sleeve and a position fixing nut arranged on the outer side of the sleeve, whereinthe position fixing nut is screwed with the sleeve through a screw pair, one end of the expansion sleeve abuts against a partition plate located at the front end of the sleeve, and the other end abuts against the position fixing nut; The telescopic device comprises a position adjusting bolt, a telescopic device and an excitation film arranged on the inside of the sleeve. The invention also relates to a fixing device for the fixed actuator in a round window niche, including a box, a first knob, a second knob, a clamping arm, a tightening wheel, a rotating shaft, feet and a reduction gear set,andbeing used for fixing the actuator at the round window niche of the use object, thereby solving the problems of the existing round window excitation actuator, such as the implantation difficulty, the small support rigidity, the unstable support and the uncontrollable initial pressure, and can be widely applied to the technical field of hearing aid equipment.

Description

technical field [0001] The invention relates to the technical field of hearing aid equipment, in particular to a fixed actuator in a round window niche and a fixing device thereof. 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 are susceptible to externa...

AI Technical Summary

Problems solved by technology

On the one hand, it is because its acting end is too large relative to the round window, which cannot be effectively coupled with the round window membrane, and thus cannot effectively input vibration energy to the cochlea, making its hearing compensation effect lower than the theoretical design value

The excessively large action end also requires that the round window membrane be fully exposed during implantation, that is, part of the bone in the round window niche must be ground away, which increases the complexity of the surgical implantation process, and the surgical operation is beyond the grasp of ordinary otolaryngologists.

On the other hand, because it has no supporting structure, it is only supported clinically by inserting the fascia in the back through surgery

This kind of fascial support cannot provide sufficient support rigidity, and its degree of support is greatly affected by surgery, and cannot provide relatively stable support rigidity among patients, resulting in large individual differences in compensation effects among patients; at the same time, this The fascia support is unstable, and there are even cases where the vibrator falls off clinically, which makes the postoperative effect of the patient unstable

In addition, studies have shown that the initial pressure between the acting end of the actuator and the round window membrane also affects its hearing compensation performance

However, this actuator cannot control the initial pressure, which also results in large individual differences in its postoperative hearing compensation performance.

Images