A method of manufacturing a 3D printed hearing aid shell
A 3D printing and production method technology, applied in hearing aids, additive manufacturing, process efficiency improvement and other directions, can solve the problems of low strength of photosensitive resin, easy to fall off, and can not adapt to different human ear shapes well.
Active Publication Date: 2021-02-02
攀枝花三帝科技有限公司
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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
Method used
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Embodiment 1
[0033] Such as figure 1 As shown, the manufacturing method of the 3D printing hearing aid shell includes the following steps: performing three-dimensional reconstruction on the medical image data of the hearing-impaired person, obtaining the three-dimensional data of the ear canal 8, using three-dimensional software to form a model, and then using the three-dimensional software to reconstruct the three-dimensional data according to the reconstructed three-dimensional data. Design and optimize the model, design the model and print it with a 3D metal printer, and perform post-processing after printing.
[0034] Specifically, the design and optimization steps include:
[0035] Step 1: Open the CT / MRI medical imaging image, and confirm that the directions of the three views are correct, and use 3D software to process the model to reduce noise processing.
[0036] Step 2: Determine the threshold according to the required ear canal tissue, determine the threshold of the required ea...
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Abstract
The invention discloses a method for manufacturing a 3D printed hearing aid shell. Firstly, three-dimensional reconstruction is performed on the medical image data of a hearing-impaired person to obtain the three-dimensional data of the ear canal, and then the three-dimensional software is used to form a model according to the reconstructed three-dimensional data. Design and optimize the model, print the optimized model through a 3D metal printer to form a shell, and perform post-processing on the shell. The manufacturing method of the 3D printed hearing aid shell involved in the present invention uses titanium metal or titanium alloy as the printed technical material, and is printed by a 3D metal printer. Customization can be realized according to individual circumstances, the shell can be thinner, and multiple hearing aids can be placed inside the shell Components, including electronic components and various other structures, the housing is comfortable to wear and facilitates the installation of the hearing aid device. Due to its strong fit, the wearer can feel stable sound transmission, clearer sound quality and less allergic.
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 ...
Claims
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IPC IPC(8): G06F30/20H04R25/00B22F3/105B33Y10/00B33Y50/00
CPCH04R25/658B33Y10/00B33Y50/00B22F10/00B22F10/66B22F10/28Y02P10/25
Inventor 张建鹏王宁李佳宾宗贵升
Owner 攀枝花三帝科技有限公司