Method for manufacturing 3D printing customized hearing aid

Abstract

The invention discloses a method for manufacturing a 3D printing customized hearing aid. Firstly, a shell is manufactured, before manufacturing, an ear printing mold is obtained by using the shape ofan inner cavity of the auditory meatus of a hearing-impaired person, the ear printing mold is scanned into a computer for graphic processing, a 3D metal printer is used for printing the shell which isthe same with the appearance of the ear printing mold and is internally provided with a containing cavity, post-processing work is done after printing is completed, hearing aid components are assembled after post-processing is completed, and the performance of the hearing aid is tested after assembling is completed. According to the 3D printed customized hearing aid, the shell is made of titaniummetal or a titanium alloy, the thin wall is achieved, space is saved, the shell with the complicated structure can be achieved according to different setting parameters, the 3D printing customized hearing aid meets the requirement of the ergonomics, a person can wear the 3D printing customized hearing aid comfortably, and installation of hearing aid equipment is facilitated.

Description

technical field [0001] The invention belongs to the technical field of manufacturing hearing aids by using 3D printing technology, and in particular relates to a 3D printing customized hearing aid. Background technique [0002] The essence of a hearing aid is an amplifier, which amplifies the sound in a certain way, so that the hearing impaired can effectively use their residual hearing in a certain way. Hearing aids are mainly composed of microphones, amplifiers, receivers, power supplies and housings. According to the different shell production methods, it can be divided into non-customized hearing aids and customized hearing aids. The shape of the non-customized hearing aid shell is single, which cannot be well adapted to different human ear shapes, and it is easy to form local pressure and gaps on the ear canal and the concha cavity, so it has the following disadvantages when worn: uncomfortable to wear, easy to fall off, poor sound insulation effect . Traditional cus...

AI Technical Summary

Problems solved by technology

The shape of the non-customized hearing aid shell is single, which cannot be well adapted to different human ear shapes, and it is easy to form local pressure and gaps on the ear canal and the concha cavity, so it has the following disadvantages when worn: uncomfortable to wear, easy to fall off, poor sound insulation effect

Traditional customized hearing aid shells are generally handmade. After a series of manual operations such as making ear impressions, waxing ear impressions, taking negative molds, injecting photosensitive resin, curing and molding, and polishing, not only the production time is long, but also the cost is high. High, and because the whole process is done by hand, although the fit to the human ear is better than that of non-customized hearing aids, there are still some errors

Due to the low strength of the photosensitive resin, the shell of the hearing aid should not be too thin. Therefore, for the small deep ear canal hearing aid, there are certain difficulties in the installation of electronic components.

In addition, due to the general biocompatibility of photosensitive resins, long-term wearing can easily cause allergic reactions

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