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An adjustable anti-hip dislocation artificial hemipelvic prosthesis

A semi-pelvic, adjustable technology, applied in the field of artificial prosthesis, can solve the problem of no longer fine-tuning, and achieve the effect of increasing the range of motion of the affected hip, preventing hip dislocation, and flexible installation and debugging.

Active Publication Date: 2018-02-02
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once implanted, fine-tuning cannot be done

Method used

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  • An adjustable anti-hip dislocation artificial hemipelvic prosthesis
  • An adjustable anti-hip dislocation artificial hemipelvic prosthesis
  • An adjustable anti-hip dislocation artificial hemipelvic prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] like figure 1 , 2 An adjustable anti-hip dislocation artificial semi-pelvic prosthesis as shown includes an ilium fixer 1, an acetabular prosthesis 2 and a pubic fixator 3,

[0044] The outer surface of one end of the ilium fixing member 1 is provided with an outer thread 11 of the ilium fixing member;

[0045] The outer surface of the acetabular prosthesis 2 protrudes from the ilium end joint 4, and the outer surface of the ilium end joint 4 is provided with an ilium end joint external thread 41;

[0046] The thread orientation of the external thread 11 of the ilium fixing member is opposite to the thread orientation of the external thread 41 of the ilium end joint;

[0047] The half-pelvic prosthesis also includes an ilium socket 5 connecting the ilium fixing member 1 and the ilium end joint 4, such as: figure 2 As shown, the inner wall of the ilium socket 5 is provided with Down's thread 51, one end of the ilium socket 5 is threadedly connected with the ilium fix...

Embodiment 2

[0050] An adjustable anti-hip dislocation artificial semi-pelvic prosthesis, the rest are the same as in Embodiment 1, such as image 3 As shown, the acetabular prosthesis 2 includes a metal acetabular cup 21, a polyethylene lining 23, a ceramic femoral head 24 and a femoral stem prosthesis 25, wherein:

[0051] The metal acetabular cup 21, the polyethylene lining 23 and the ceramic femoral head 24 are sleeved sequentially from outside to inside;

[0052] like Figure 4 As shown, the metal cup 21 is hemispherical, and the inner surface of the metal cup 21 is covered with a ceramic layer 22;

[0053] The polyethylene lining 23 is hemispherical;

[0054] The ceramic femoral head 24 is spherical, and the femoral stem prosthesis 25 is mounted on the ceramic femoral head 24 . like figure 2 , 3 The shown acetabular prosthesis 2 and the metal cup 21 in the acetabular prosthesis 2, the inner surface of the metal cup 21 is a highly polished metal surface, and the inner surface of...

Embodiment 3

[0056] An adjustable anti-hip dislocation artificial semi-pelvic prosthesis, the rest is the same as that of Embodiment 2, the ilium fixing member 1 and the pubic bone fixing member 3 are respectively provided with scale bars 100. According to the gear position of the scale bar 100 , the depth of screwing the ilium fixing piece 1 and the iliac bone fixing piece 4 into the iliac crest 5 is appropriately selected, so as to realize the adjustment of the distance between the ilium and the pubic piece.

[0057] The described ilium end joint 4 is composed of an ilium end ear plate 42 and an ilium end support plate 43. The ilium end ear plate 42 and the ilium end support plate 43 are respectively provided with through holes, and the first bolt bearing 8 A hinged structure is formed after passing through the through holes on the ilium end ear plate 42 and the ilium end support plate 43 . After the truncation data is obtained by the computer before the operation, the truncation size ma...

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PUM

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Abstract

The invention relates to the technical field of prostheses, in particular to a hip dislocation preventive adjustable artificial hemipelvic prosthesis, comprising an iliac fixture, an acetabular prosthesis and a pubic fixture. The outer surface of one end of the iliac fixture is provided with an iliac fixture external thread; an iliac end connector extends from the outer surface of the acetabular prosthesis, and the outer surface of the iliac end connector is provided with an iliac end connector external thread; a thread orientation of the iliac fixture external thread is opposite to that of the iliac end connector external thread. The hip dislocation preventive adjustable artificial hemipelvic prosthesis has the advantages of improved activity of affected hip, prevention of postoperative hip joint dislocation, greater flexibility of the prosthesis in mounting and adjusting during surgery, and reduced surgical risk.

Description

technical field [0001] The invention relates to the technical field of artificial prostheses, in particular to an adjustable anti-hip dislocation artificial semi-pelvic prosthesis. Background technique [0002] Pelvic tumors involving the acetabulum often require functional reconstruction after resection. The customized hemipelvic prosthesis reconstruction can achieve early firm fixation, the anatomical continuity of the pelvic ring is well restored, and the length and shape of the limbs are satisfactory. Early weight-bearing requirements and good postoperative hip joint function are ideal reconstruction methods after resection of tumors involving the second area of ​​the pelvis. [0003] However, due to the lack of good soft tissue coverage and restrictive structure of the postoperative hemipelvic prosthetic hip joint, only relying on its own rigid structure, the incidence of postoperative dislocation is extremely high. Therefore, it is necessary to repeatedly adjust the ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/32
CPCA61F2/32A61F2220/0016A61F2310/00011
Inventor 王志伟乔苏迟李诚付远超刘畅吾不力·阿扎提朱德刚孙淦
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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