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Hearing aids based on 4D printed shape memory materials

A technology of memory materials and hearing aids, which is applied to hearing aids, hearing aid shells, electrical components, etc., can solve the problems of easy interference between the vibrator and mastoid connection, weak connection relationship, and difficulty in fitting hearing aids and skulls. Good surgical prognosis, reduced trauma, and improved energy transfer

Active Publication Date: 2020-09-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a hearing aid based on 4D printing shape memory materials to solve the problem that it is difficult for the hearing aid to fit tightly with the skull, and it is easy to interfere with the connection between the vibrator and the mastoid. The connection needs to be realized by the self-healing of the tissue, and the connection relationship is relatively weak. Due to the patient's physical condition, the technical problem of the second-stage operation may be required.

Method used

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  • Hearing aids based on 4D printed shape memory materials
  • Hearing aids based on 4D printed shape memory materials
  • Hearing aids based on 4D printed shape memory materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 As shown, a hearing aid based on 4D printing shape memory material includes a hearing aid body, and the outer part of the hearing aid body is wrapped with a protective cover 8, and the protective cover 8 is made of 4D printing shape memory material, and the 4D printing shape memory material For 4D printing shape memory polymers or 4D printing shape memory polymer composite materials, the temporary state of the protective sleeve 8 is a compressed state, which can shrink to a certain extent, and expands after implantation to automatically return to its original shape, The protective cover 8 expands under body temperature conditions until the shape completely fits the inner wall of the bone groove and does not change.

[0034] like figure 2 As shown, in this embodiment, the hearing aid body includes an implant device 1, a propulsion device 2, a vibrator 3, a mounting device 4 and a driving device. The implant device 1 is used for fixed connection with the o...

Embodiment 2

[0039] The 4D printing shape memory polymer in the present invention uses a UV-LED stereotactic printer, and uses 10,000 g / mol methacrylated polycaprolactone as the printing material for printing.

[0040] The 4D printing process includes:

[0041] (a) digital model is created from MRI scans (holes, grooves);

[0042] (b) building a 3D model;

[0043] (c) Printing with a UV-LED stereotactic printer;

[0044] (d) Obtaining the product.

[0045] The protective cover prepared by 4D printing shape memory polymer, the Tg of methacrylated polycaprolactone is 37 ℃, can return to the original shape at body temperature, and can be prepared according to the individual condition of the patient's surgical incision, which not only solves the problem of It is difficult to fit the hearing aid equipment and the skull tightly, and this kind of protective sleeve does not need to be fixed on the wall of the bone groove through surgical traction, but directly achieves the effect of tight fitti...

Embodiment 3

[0047] The difference between this embodiment and the above-mentioned embodiments is that the shape memory polymer composite material of this embodiment adds short fibers, carbon fibers, and nickel powder on the basis of shape memory polymers; The liquid controls the value of the material to make it deform. We can stimulate it individually or in combination, such as heating; electromagnetic stimulation; due to wearing the hearing aid for a long time, or because it is dropped on the ground, it is prone to cracks. After its stimulation, Effective restoration of this hearing aid. Extend the life of your hearing aids.

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Abstract

The invention provides a hearing aid based on a 4D printing shape memory material. The hearing aid comprises a hearing aid main body, a protective cover covers the outside of the hearing aid main body, the protective cover is made of a 4D printing shape memory polymer or a 4D printing shape memory polymer composite material, and the protective cover is expanded under a body temperature condition,until the shape completely conforms to an inner wall of a bone groove and does not change. According to the hearing aid based on the 4D printing shape memory material provided by the invention, the protective cover made of the 4D printing shape memory material is arranged at the outside of the hearing aid main body, so that a hearing aid device is tightly fitted with the skull to reduce the weightat a mastoid joint, the self-tightening of the hearing aid device and the skull is achieved, especially for children with poor compliance, the operation prognosis is better, and since the main structure of the hearing aid device is isolated internally and is not in direct contact with human tissues, the requirements for the material of the device are reduced, thereby reducing the cost of the hearing aid device.

Description

technical field [0001] The invention relates to the technical field of hearing aids, in particular to a hearing aid based on 4D printing shape memory materials. Background technique [0002] Using an implanted hearing aid usually requires an incision made behind the ear, as deep as the skull, and a drill bit to create a recess for the hearing aid. Implantable hearing aids include an electromechanical transducer that has a vibrator , the vibrator mechanically stimulates the ossicular chain through the axial vibration transmitted between them, and usually needs to insert the vibrator through a hole drilled in the mastoid, the disadvantage is that the hearing aid device is difficult to fit tightly with the skull, and it is difficult for the vibrator and The mastoid connection is prone to interference, and the connection between the vibrator and the mastoid requires tissue self-healing, and the connection is relatively weak. Due to the patient's constitution, a second-stage oper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R25/00
CPCH04R25/65
Inventor 张风华冷劲松刘彦菊
Owner HARBIN INST OF TECH
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