Biological-fixation acetabular prosthesis with adjustable angle

An acetabular prosthesis and angle adjustment technology, applied in the field of medical devices, can solve problems such as joint instability, difficulty in accurately adjusting the anti-dislocation angle of the acetabular lining, and limited function, so as to relieve the loosening of the acetabulum, reduce wear, and ensure Effects of stability and security

Inactive Publication Date: 2016-11-23
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] In artificial hip prosthesis replacement surgery, the design and installation position of the acetabular prosthesis are very important. The installation position of the acetabular prosthesis will directly affect the biomechanics of the hip joint, the range of motion of the prosthesis, the wear of the acetabular lining, Prosthesis dislocation and later stability, etc. After the conventional acetabular prosthesis is installed, it is difficult to accurately adjust the anti-dislocation angle of the acetabular lining, and joint instability or functional limitations are prone to occur after surgery

Method used

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  • Biological-fixation acetabular prosthesis with adjustable angle
  • Biological-fixation acetabular prosthesis with adjustable angle
  • Biological-fixation acetabular prosthesis with adjustable angle

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Embodiment Construction

[0033] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0034] The present invention provides a biofixed acetabular prosthesis with adjustable angle, its structure is as follows Figure 1-6 As shown, it includes: an acetabular outer cup 1 and an acetabular lining 7, wherein, the inner edge of the bottom end of the acetabular outer cup 1 is provided with an angle adjustment groove 3, and the top end of the acetabular outer cup 1 is provided with There are prosthesis implanter grooves 6 and fixing threaded holes 5, and the outer surface of the bottom end of the acetabular outer cup 1 is provided with inverted pyramid-shaped protrusions 2, which effectively increase the stability of the prosthesis after the prosthesis is implanted and anti-rotation, which further strengthens the combination tightness of the acet...

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Abstract

The invention provides a biological-fixation acetabular prosthesis with the adjustable angle. The biological-fixation acetabular prosthesis comprises an outer acetabular cup and an acetabular lining, wherein an angle adjusting groove is formed in the inner edge of the bottom end of the outer acetabular cup, a prosthesis implantation device groove and a fixing threaded hole are formed in the top end of the outer acetabular cup, inverse-pyramid protrusions are formed in the outer surface of the bottom end of the outer acetabular cup, and three universal screw concave holes matched with screws are further formed in the outer acetabular cup; cylindrical protrusions matched with the angle adjusting groove in the inner edge of the outer acetabular cup are formed in the outer surface of the bottom end of the acetabular lining; after the outer acetabular cup and the acetabular lining are accurately subjected to angle adjustment to be fixedly connected in an interference-pressing-fit mode, abrasion of the acetabular lining is effectively reduced, and the stability and the safety after the acetabular prosthesis is implanted are guaranteed.

Description

technical field [0001] The invention relates to a hip joint prosthesis in the field of medical instruments, in particular to an angle-adjustable biofixed acetabular prosthesis. Background technique [0002] In artificial hip prosthesis replacement surgery, the design and installation position of the acetabular prosthesis are very important. The installation position of the acetabular prosthesis will directly affect the biomechanics of the hip joint, the range of motion of the prosthesis, the wear of the acetabular lining, Dislocation of the prosthesis and later stability, etc. After the conventional acetabular prosthesis is installed, it is difficult to accurately adjust the anti-dislocation angle of the acetabular lining, and postoperative joint instability or functional limitation is prone to occur. [0003] In the clinical practice of conventional acetabular prosthesis, the wear of the acetabular lining has always been a key point, which can directly affect the service li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/34A61L27/16
CPCA61F2/34A61F2002/30245A61F2002/3054A61F2002/3403A61F2002/3412A61F2002/348A61F2310/00005A61L27/16A61L2430/24C08L23/06
Inventor 徐宁牛晓辉张青
Owner BEIJING LIDAKANG TECH
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