A revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum

A technology of rotation center and acetabular cup, applied in the field of acetabular cup revision, can solve the problem of moving up the acetabular anatomical rotation center, and achieve the effect of promoting integration and facilitating connection

Active Publication Date: 2022-03-11
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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  • A revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum
  • A revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum
  • A revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum

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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 1 away from the end of the outer cup body 2, forming an angle of 15-25° between the protruding part 1 and the outer cup body 2, and the protruding part 1 is clo...

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Abstract

The present application relates to the field of medical acetabular prosthesis, in particular to a revision acetabular cup for reconstructing the anatomical center of rotation of the acetabulum, including a drum-shaped hollow protrusion and a hemispherical Hollow outer cup body; the end of the protruding part close to the outer cup body is located in the outer cup body and connected with the outer cup body, forming a common cavity between the protruding part and the outer cup body; the outer cup body is arranged obliquely , so that the outer cup body and the protruding part form an angle; the end of the protruding part away from the outer cup body is positioned and connected with the inner liner so that the inner liner is located in the cavity. This application has the reconstruction of the acetabular anatomical rotation center, the protrusion reconstructs the acetabular anatomical rotation center, and moves the acetabular anatomical rotation center down, and the setting of the outer cup makes the rotation center of the protrusion coincide with the rotation center of the bony acetabulum In a straight line, it has a certain recovery effect on the shortening of the limbs, the reduction of abduction ability, soft tissue relaxation and joint instability caused by the upward movement of the acetabular anatomical 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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Patent Type & Authority Patents(China)
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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