Manufacturing method of 3D-printed hearing aid casing

Abstract

The invention discloses a manufacturing method of a 3D-printed hearing aid casing. The method includes the following steps that firstly, three-dimensional reconstruction is performed on medical imagedata of a hearing-impaired person, three-dimensional data of the ear canal of the person are obtained, a model is formed by the aid of three-dimensional software and then is designed and optimized bythe aid of the three-dimensional software according to the reconstructed three-dimensional data, the optimized model is printed by the aid of a 3D metal printer to form the casing, and aftertreatmentwork is performed on the casing. According to the manufacturing method of the 3D-printed hearing aid casing, technical materials for printing adopt titanium or titanium alloys, printing is performed by the aid of the 3D metal printer, customization can be realized according to personal information, the casing can be relatively thin, multiple hearing aid elements can be placed inside the casing andinclude electronic elements and various other structures, the person can wear the casing comfortably, and mounting of hearing aid equipment is facilitated. The casing has the relatively high fittingdegree, so that the wearer can feel stable sound transmission, the tone quality is clearer, and the wearer is not prone to allergies.

Description

technical field [0001] The invention belongs to the technical field of using 3D printing technology to manufacture hearing aids, and in particular relates to a method for manufacturing a 3D printed hearing aid shell. 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 ...

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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