artificial hip joint

A hip joint and artificial technology, applied in the field of artificial hip joints, can solve the problems of poor wear resistance of the substrate coating, detachment of the femoral neck, and no fixed structure, etc., and achieve the effects of easy replacement, reduction of thermal cracks, and slowing down of thermal mismatch

Active Publication Date: 2021-10-15
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the femoral neck and the femoral stem in the existing hip joints are mostly one-piece structure. If the femoral neck breaks, it needs to be replaced as a whole; while the existing split structure has no fixed structure, and the femoral neck is very easy to be removed from the femoral stem. The problem of detachment in the medium; and the problem that the substrate coating of the artificial hip joint has poor wear resistance; and an artificial hip joint is provided

Method used

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specific Embodiment approach 1

[0032] Specific implementation mode one: combine Figure 1-9 Specifically, an artificial hip joint in this embodiment includes a ball 1, a femoral neck 2, an artificial femoral insert 3 and a connecting joint 4;

[0033] The ball 1 is arranged at one end of the femoral neck 2, and the other end of the femoral neck 2 is provided with a rolling ball slot 2-1, and the diameter of the end of the femoral neck 2 is less than or equal to the bottom diameter of the rolling ball slot 2-1;

[0034] The connecting joint 4 is composed of a sleeve 4-1, a rolling ball 4-2 and a retaining ring 4-3;

[0035] One end of the sleeve 4-1 is connected to the artificial femoral insert 3, and a circle of rolling ball positioning holes 4-1-1 is evenly distributed on the sleeve 4-1, and the sleeve 4-1 is far away from the artificial femoral insert 3. One end is provided with a retaining ring 4-1-2, the retaining ring 4-1-2 is provided with a clamping hole 4-1-3, and the clamping hole 4-1-3 is provide...

specific Embodiment approach 2

[0046] Specific implementation mode two: combination Figure 10-12 Specifically, the difference between this embodiment and the first embodiment is that the sphere (1) is formed by connecting the upper sphere (1-1) with the lower sphere (1-2), and the described sphere 1 is formed by the upper sphere 1 -1 is connected with the lower sphere 1-2, the upper sphere 1-1 is a hollow structure, the surface is evenly and densely provided with a plurality of protrusions 1-1-1, and the tops of the plurality of protrusions 1-1-1 form a spherical surface , the wall thickness of the protrusions 1-1-1 is smaller than the wall thickness of the upper sphere 1-1 between adjacent protrusions 1-1-1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0047] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the upper sphere (1-1) is a hollow structure. Others are the same as in the first or second embodiment.

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Abstract

An artificial hip joint, which relates to the field of medical equipment, the present invention solves the problem that the femoral neck and the femoral stem in the existing hip joints are mostly integrated structures, and if the femoral neck breaks, it needs to be replaced as a whole; while the existing split structure , no fixed structure, the problem that the femoral neck is easily detached from the femoral stem; and the problem that the substrate coating of the current artificial hip joint has poor wear resistance. The inventive joint includes a ball, a femoral neck, an artificial femoral insert and a connecting joint. The coating is sprayed on the surface of the sphere, and the coating is composed of nano zirconia and nano hydroxyapatite. The invention is applied to the field of artificial joints.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an artificial hip joint. Background technique [0002] The hip joint is the joint formed by the femur (femur) and the pelvis. When the hip joint is degenerated, diseased or traumatized, it will cause pain, stiffness or deformation, and even inconvenient movement. In severe cases, the symptoms cannot be relieved by drugs or other treatments. With the development of medical technology, artificial hip replacement has played an important role in improving joint function, relieving pain, and improving the quality of life of patients. Total hip replacement is to implant an artificial hip joint including acetabular cup, liner, ball head, femoral neck and femoral stem into the human body to replace the diseased human hip joint. The femoral neck and femoral stem in the existing hip joints are mostly integrated structures. In practical applications, it is found that if the femoral neck brea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/36A61L27/30
CPCA61F2/30767A61F2/3609A61F2002/3093A61F2002/3652
Inventor 李国晶赵化启王晶彦刘文斌杨婷婷姚潍何丽丽
Owner JIAMUSI UNIVERSITY
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