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Artificial hip joint and manufacturing method thereof

A hip joint and artificial technology, applied in the direction of hip joints, joint implants, joint implants, etc., can solve the problem of low production efficiency of mechanical processing, short service life of artificial hip joint prosthesis, and complicated manufacturing process of joint accessories and other issues to achieve the effect of good reproducibility, increased cost, and high product consistency

Inactive Publication Date: 2015-04-29
ZHEJIANG YIHUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal materials are easy to cause complications, and the service life of artificial hip joint prosthesis made of metal materials is not long. For example, ultra-low carbon stainless steel materials have a theoretical service life of 4 to 6 years.
Existing hip joint parts are usually produced by casting, forging, powder metallurgy isostatic pressing and mechanical processing, but the manufacturing process of joint parts is complicated and the production efficiency of mechanical processing is low
And it is impossible to produce complex components of the hip joint with a composite structure on a large scale and at low cost

Method used

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  • Artificial hip joint and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] figure 1 It is a structural schematic diagram of the artificial hip joint of the present invention, such as figure 1 The artificial hip joint of the present invention is shown, including acetabulum 1, femur 2, joint handle 3, figure 2 It is a schematic diagram of the longitudinal section structure of the artificial hip joint of the present invention, as figure 2 The artificial hip joint shown is composed of an inner layer 5 of the artificial hip joint and an outer layer 4 of the artificial hip joint, the outer layer 4 covers the inner layer 5, the outer layer 4 is a wear-resistant material layer, and the inner layer 5 is a metal material layer, wherein , the thickness of the outer layer 4 is less than or equal to the thickness of the inner layer 5 . The outer layer 4 is a quartz material layer, and the inner layer is 316 stainless steel. As an alternative, the outer layer 4 can also be a layer of diamond material, a layer of ceramic material, a layer of aluminum ox...

Embodiment 2

[0025] One of the preparation methods of embodiment 1:

[0026] (1) Feed stainless steel and zirconia. The stainless steel layer is used as the inner layer of the artificial hip joint, and the zirconia layer is used as the outer layer of the artificial hip joint. Co-injection is performed at 150°C, the mold temperature is 60°C, and the injection pressure is 100MPa , to obtain the embryo;

[0027] (2) Then degrease the blank, the degreasing temperature is 40°C, and the time is 6 hours to obtain the degreasing part; after degreasing, the product is sintered at 1200°C to obtain the artificial hip joint product.

Embodiment 3

[0029] Two of the preparation method of embodiment 1:

[0030] (1) Feed stainless steel and zirconia. The stainless steel layer is used as the inner layer of the artificial hip joint, and the zirconia layer is used as the outer layer of the artificial hip joint. Co-injection is carried out at 100°C, the mold temperature is 20°C, and the injection pressure is 200MPa , to obtain the embryo;

[0031] (2) Then degrease the blank, the degreasing temperature is 40°C, and the time is 10 hours to obtain the degreasing part; after degreasing, the product is sintered at a sintering temperature of 1360°C to obtain the artificial hip joint product.

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Abstract

The invention relates to medical rehabilitation instruments, and in particular, to an artificial hip joint. According to the scheme, the artificial hip joint comprises an acetabular bone, a thighbone and a joint handle; the acetabular bone is composed of an inner acetabular bone layer and an outer acetabular bone layer, and the inner acetabular bone layer is wrapped by the outer acetabular bone layer; and the outer acetabular bone layer is a wear-resistant material layer, and the inner acetabular bone layer is a metal material layer. According to the artificial hip joint, a structure of an existing artificial hip joint is improved, and the structure that the inner layer is wrapped by the outer layer is adopted. In addition, the outer layer is made of quartz material, diamond material, ceramic material or zirconium oxide material, and the inner layer is the metal material layer. By means of the artificial hip joint, the cost is not increased, and the defects of existing products made of single material such as alloy material or metal material are effectively overcome. Compared with existing products made of metal material, the artificial hip joint provided by the invention achieves composite material functions. The outer layer is the wear-resistant material layer, and the inner layer is the metal material layer, so that the wear-resistant characteristic is achieved; and toxic metallic elements are prevented from influencing the health of the human body.

Description

technical field [0001] The invention relates to a medical rehabilitation device, in particular to an artificial hip joint and a preparation method thereof. Background technique [0002] The artificial hip joint prosthesis imitates the structure of the human hip joint. The stem of the prosthesis is inserted into the medullary cavity of the femur, and the head is rotated with the socket or the metal cup of the prosthesis to realize the flexion, extension and movement of the femur. Due to the needs of hardness and cost, the existing artificial hip joint materials are all made of metal materials such as stainless steel. However, metal materials are easy to cause complications, and the service life of artificial hip joint prosthesis made of metal materials is not long, such as ultra-low carbon stainless steel materials, and its theoretical service life is 4 to 6 years. Existing hip joint parts are usually produced by casting, forging, powder metallurgy isostatic pressing and me...

Claims

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Application Information

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IPC IPC(8): A61F2/34A61L27/40
Inventor 申建中姜志瑜梁良华吴红华钟海潘跃云顾再勋邓永俊
Owner ZHEJIANG YIHUO TECH
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