Acetabular rotation center positioning device and its positioning method

A positioning device and a technology of the center of rotation, which is applied to joint implants, joint implants, etc., can solve problems such as the difficulty in positioning the center of rotation of the acetabulum, and achieve the effects of improving the success rate, simple structure, and scientific design

Active Publication Date: 2015-11-04
昆明市中医医院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem of difficulty in locating the center of rotation of the existing acetabulum, and provides a positioning method capable of quickly locating the center of rotation of the acetabulum

Method used

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  • Acetabular rotation center positioning device and its positioning method

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Embodiment 1

[0015] Embodiment 1: A positioning device and its positioning method for the center of acetabular rotation, the positioning device includes a handle 1 and outriggers 2, there are three outriggers 2, the bottom end of the handle 1 is provided with a universal joint 3, and the outriggers 2 The universal joint 3 is connected with the handle 1, and the outrigger 2 rotates around the universal joint 3. The outrigger 2 is a telescopic structure;

[0016] The center of rotation of the acetabulum is located by the following steps:

[0017] (1) Before total hip replacement surgery, use computer-aided technology to accurately locate the acetabular rotation center on the affected side of the patient;

[0018] (2) Three fixed bony anatomical landmarks are simulated on the hip joint, one of which is the positive 12 o'clock position of the acetabulum, and the other two are two points at the notch gap of the acetabulum. Connect lines to the three marker points respectively, measure and reco...

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Abstract

The invention discloses a locating device and method for an acetabulum rotating center, relates to a locating device, and particularly relates to a locating device and method for rapidly locating an acetabulum rotating center. The locating device is characterized by comprising a handle and three support legs, wherein a universal joint is arranged at the bottom end of the handle, the support legs are connected with the handle through the universal joint, and the support legs rotate around the universal joint and are of telescopic structures. The locating device for the acetabulum rotating center is scientific in design, simple in structure and convenient to use; and the normally developed acetabulum center at one side is figured out by a computer, and then the lengths of the three support legs of the locating device for the acetabulum rotating center are regulated through a scale, the three support legs are respectively placed on three mark points so that the position of the acetabulum rotating center can be rapidly and accurately located, the accuracy of prosthesis placing is improved, and the success rate of a complex total hip replacement operation is increased.

Description

technical field [0001] The invention relates to a positioning device, in particular to a positioning device and a positioning method for rapidly positioning the rotation center of the acetabulum. Background technique [0002] The artificial hip joint is a prosthesis similar to human bone joints made of metal materials with good biocompatibility and mechanical properties. It is implanted in the hip joint on the affected side by surgical methods, and its purpose is to eliminate pain and restore normal function. joint mobility. Total hip arthroplasty can enable patients to get off the ground early and reduce the complications of long-term bed rest in elderly patients. [0003] Accurate positioning of the acetabular center of rotation in orthopedic total hip surgery is one of the main signs of successful surgery. Osteophyte coverage, abnormal acetabular development, changes in bony landmarks, etc. The above factors often lead to the inaccurate positioning of the center of acet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/46
Inventor 常敏许燕飞郭英吴继昆王涛艾元亮
Owner 昆明市中医医院
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