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Rebuilding acetabular cup for rebuilding acetabular anatomical rotation center

A technology of rotation center and acetabular cup, which is applied in the field of revision acetabular cup, can solve the problems such as the upward movement of the acetabular anatomical rotation center, and achieve the effect of promoting combination and convenient connection

Active Publication Date: 2021-05-28
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In order to solve the problem that the diameter of the Jumbo cup used in the revision is larger than the diameter of the bony acetabulum, which causes the acetabular anatomical center of rotation to move up and cause various adverse effects, this application provides a revision for reconstructing the acetabular anatomical center of rotation Acetabular cup

Method used

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  • Rebuilding acetabular cup for rebuilding acetabular anatomical rotation center
  • Rebuilding acetabular cup for rebuilding acetabular anatomical rotation center
  • Rebuilding acetabular cup for rebuilding acetabular anatomical rotation center

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Embodiment Construction

[0044] The following is attached Figure 1-7 The application is described in further detail.

[0045] The embodiment of the present application discloses a revision acetabular cup for reconstructing the anatomical rotation center of the acetabulum.

[0046] refer to figure 1 and figure 2 , a revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum, used in severe acetabular bone defects, located in the acetabulum, and used to reconstruct the anatomical center of rotation of the acetabulum, comprising a hollow bulge 1, bulge 1 It is a drum-shaped structure with openings at both ends. One end of the protruding part 1 is fixedly connected with a hollow outer cup body 2 which is arranged obliquely. The edge of the cup mouth intersects with a point on the edge of the protruding part away from the end of the outer cup body, forming an angle of 15-25° between the protruding part 1 and the outer cup body 2, and the protruding part 1 is close t...

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Abstract

The invention relates to the field of medical acetabular prostheses, in particular to a rebuilding acetabular cup for rebuilding an acetabular anatomical rotation center, and is used for rebuilding the acetabular anatomical rotation center. The rebuilding acetabular cup comprises a drum-shaped hollow protruding part and a hemispherical hollow outer cup body; the end, close to the outer cup body, of the protruding part is located in the outer cup body and connected with the outer cup body, and a shared cavity is formed in the protruding part and the outer cup body. The outer cup body is obliquely arranged, so that an included angle is formed between the outer cup body and the convex part; the end, away from the outer cup body, of the protruding part is in positioning connection with the lining, and the lining is located in the cavity. The acetabulum dissection rotation center is reconstructed, the acetabulum dissection rotation center is reconstructed through the protruding part, the acetabulum dissection rotation center is enabled to move downwards, and the rotation center of the protruding part and the rotation center of the bony acetabulum are located on the same straight line through the arrangement of the outer cup body; and a certain recovery effect is achieved on the problems of limb shortening, abduction capability reduction, soft tissue relaxation, joint instability and the like caused by upward movement of the acetabulum anatomy rotation center.

Description

technical field [0001] The present application relates to the field of medical acetabular prosthesis, in particular to a revision acetabular cup for reconstructing the acetabular anatomical rotation center. Background technique [0002] Revision total hip surgery is performed when an initial total hip replacement fails or other factors necessitate revision. The acetabular cup implanted for the first time may cause osteolysis around the acetabulum during use; before implanting a new acetabular cup, the acetabular cup implanted for the first time needs to be removed, but when the acetabular cup is removed, It also causes bone loss around the acetabulum, so the diameter of the acetabulum becomes larger, so the acetabular cup to be placed after the revision is larger than the acetabular cup that was implanted for the first time, and the size of the acetabular cup during the revision is larger than that of the original cup. The original size of the acetabulum is large. [0003]...

Claims

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Application Information

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IPC IPC(8): A61F2/34
CPCA61F2/34A61F2002/3406
Inventor 周勇刚解凤宝史春宝刘华丰郝孟娟
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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