Thighbone osteotomy instrument suite

A technique for femur and osteotomy, applied in bone drill guidance, medical science, surgery, etc., can solve problems such as lack of reference, increased risk of fracture around the prosthesis, and poor fit between the prosthesis and the osteotomy surface

Inactive Publication Date: 2017-06-13
PEKING UNIV THIRD HOSPITAL
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The osteotomy plane of the anterior femoral condyle coincides with the plane formed by the anterior cortical bone of the femur as much as possible. If it is too high, it will cause poor fit between the prosthesis and the osteotomy surface, which will affect the fixation strength of the prosthesis. If it is too low, the anterior cortex of the femur will appear. Depression, increasing the risk of periprosthetic ...

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  • Thighbone osteotomy instrument suite
  • Thighbone osteotomy instrument suite
  • Thighbone osteotomy instrument suite

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] Femoral anatomical axis: It is the long axis of the femur, which is the axis formed by connecting the center points of the cross-sections of the femur.

[0043] Femoral mechanical axis: It is the line connecting the center points of the proximal and distal joints of the femur.

[0044] Such as Figure 1-Figure 11 As shown, the femora...

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Abstract

The invention relates to the technical field of a medical treatment device, and particularly relates to a thighbone osteotomy instrument suite in a minimally invasive knee prosthesis operation. The suite comprises a thighbone remote end osteotomy device and a thighbone preartis osteotomy device, wherein the thighbone remote end osteotomy device comprises a thighbone remote positioning module, an adjusting rod and a thighbone remote end osteotomy module; the thighbone preartis osteotomy device comprises a thighbone measurer, a thighbone preartis locator and a thighbone preartis osteotomy module. By using the thighbone remote end osteotomy device and the thighbone preartis osteotomy device, the thighbone remote end and the thighbone preartis can be exactly positioned and performed with osteotomy, thereby avoiding the repeat operation or operation failure caused by location and osteotomy bias, and reducing the operation risk.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral osteotomy instrument set used in minimally invasive knee joint replacement surgery. Background technique [0002] As my country enters an aging society in an all-round way, there are more and more elderly patients with osteoarthritis over the age of 65. Total knee replacement has become an effective method for the treatment of advanced knee osteoarthritis, which can relieve pain, improve function, and improve quality of life. [0003] In knee replacement surgery, in order to find a suitable installation plane of the knee femoral prosthesis and ensure that the plane formed by the anterior femoral condyle and the anterior cortical bone of the femur coincides as much as possible, it is necessary to perform osteotomy on the distal femur and the anterior femoral condyle. The depth of the distal osteotomy should be appropriate. If the osteotomy is too shallow or t...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B17/17A61B90/00
CPCA61B17/1657A61B17/1633A61B17/164A61B17/1675A61B17/1732A61B17/1764
Inventor 余家阔王少杰齐岩松
Owner PEKING UNIV THIRD HOSPITAL
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