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Artificial prosthesis and preparation method thereof

An artificial prosthesis and prosthesis technology, applied in the direction of additive processing, etc., can solve problems such as restricting application, and achieve the effect of improving efficiency, eliminating low efficiency and high cost, and eliminating dependence.

Pending Publication Date: 2022-01-07
江苏毅松医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The above four defects seriously restrict the application of selective laser melting and selective electron beam melting 3D printing technology in the mass production of orthopedic prostheses

Method used

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  • Artificial prosthesis and preparation method thereof
  • Artificial prosthesis and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Aiming at the problems existing in the prior art, the invention provides a kind of preparation method of artificial prosthesis, comprises the steps:

[0062] S1: Design the prosthesis by 3D software to obtain a digital prosthesis model, the digital prosthesis model has the same shape parameters as the designed prosthesis;

[0063] S2: Using a digital 3D printer to integrally print the digital prosthesis model obtained in step S1 to obtain a prosthesis body;

[0064] S3: removing the adhesive on the prosthesis body, cleaning and drying the prosthesis body;

[0065] S4: Sintering the dried prosthesis body obtained in step S3 to obtain a preformed prosthesis;

[0066] S5: Post-processing the preformed prosthesis to obtain a shaped prosthesis.

[0067] Further in the above technical solution, in step S1, the digital prosthesis model has shape parameters consistent with the designed prosthesis, specifically including:

[0068] The digital prosthesis model has the same sha...

Embodiment 2

[0094] Utilize the preparation method described in the present invention to prepare the artificial joint stem on the bone length:

[0095] The most common modern artificial joint without bone cement fixation stem consists of two to three basic parts:

[0096] One is the main structural part initially formed by forging;

[0097] The second is that the rough surface bone formed by thermal spraying or plasma spraying technology grows into the metal interface A. The thickness of this interface A is generally 0.5-2.0mm. parts above the end, such as figure 1 shown;

[0098] The third is that for products with certain biological activity and fixation, a layer of hydroxyapatite coating can also be coated on the metal coating by thermal spraying or plasma spraying.

[0099] Due to the high requirements on the fatigue strength of the joint handle and its large size, there are currently no products made by selective laser or electron beam fusion 3D printing technology on the market. T...

Embodiment 3

[0112] Utilize the preparation method described in the present invention to prepare the bone-in-growth artificial joint acetabular cup:

[0113] Modern artificial hip acetabular cups have basically adopted the form of non-cemented biological fixation. The acetabular cup is mainly composed of two parts:

[0114] One is the main structure part without holes, which is the main body 10 of the acetabular cup,

[0115] The second is the outer surface 20 that contains porous structure to form a biological fixation with the host bone, such as figure 2 As shown, there are a number of holes 30 on the outer surface.

[0116] Traditional preparation methods for acetabular cups include:

[0117] 1. Prepare the main body 10 of the acetabular cup by machining;

[0118] Two, a porous "pearl face" or mesh is bonded to the outer surface 20 of the main body by a sintering process.

[0119] Modern selective laser or selective electron beam fusion 3D printing technology has been successfully ...

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Abstract

The invention discloses an artificial prosthesis and a preparation method thereof. The prosthesis is designed through three-dimensional software, a digital prosthesis model is obtained, and the digital prosthesis model has morphology parameters consistent with those of the designed prosthesis; the obtained digital prosthesis model is integrally printed and formed through a digital 3D printer, and a prosthesis blank is obtained; an adhesive on the prosthesis blank is removed, and the prosthesis blank is dried; the dried prosthesis blank obtained in the previous step is sintered, and a preformed prosthesis is obtained; and post-treatment is carried out on the preformed prosthesis, and the formed prosthesis is obtained. The artificial prosthesis follows the modern die-free digital additive manufacturing one-time forming concept, the batch production advantages of a traditional powder metallurgy technology, a traditional manufacturing process and the like are combined, one-time forming without a physical interface between an artificial joint prosthesis bone growing or bone ingrowth face and a base body is achieved, no die is needed, and the production efficiency is improved.

Description

technical field [0001] The invention relates to orthopedic implants in the medical field, in particular to an artificial prosthesis and its preparation method and application. Background technique [0002] The fixation stability between the artificial prosthesis and the host bone is one of the key factors to ensure the long-term safety and effectiveness of the artificial joint in the human body. The fixation of modern artificial joints, especially the fixation of artificial hip joints and artificial knee prosthesis can be divided into two forms: bone cement fixation and bone cement fixation. For non-cemented fixation methods, biological fixation methods aiming at bone growth and bone ingrowth have become the mainstream of artificial joint fixation technology. [0003] The artificial prosthesis fixed on the bone length is usually composed of a rough metal coating or a double coating of metal and hydroxyapatite on the bone length interface, and the main part of the prosthesis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F3/11B33Y10/00B33Y70/10
CPCB22F3/227B22F3/11B33Y10/00B33Y70/10
Inventor 王爱国王恺威徐小卉韩坤原章默涵
Owner 江苏毅松医疗科技有限公司
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