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Osteotomy navigation device for total knee arthroplasty

A technology of total knee replacement and navigation device, which is applied in the field of osteotomy navigation device, can solve the problems of no navigation function and unreliable fixation of the guide plate, etc.

Active Publication Date: 2019-11-12
THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a total knee arthroplasty osteotomy navigation device to solve the problems of unreliable fixation of the existing guide plate and no navigation function

Method used

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  • Osteotomy navigation device for total knee arthroplasty
  • Osteotomy navigation device for total knee arthroplasty
  • Osteotomy navigation device for total knee arthroplasty

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Embodiment Construction

[0029] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to an osteotomy navigation device for total knee arthroplasty and belongs to the technical field of surgical instruments. The osteotomy navigation device comprises a substrate fit with femur condylar bone surfaces, a marrow entering sleeve and positioning sleeves arranged on the outer side of the substrate as well as a limit wall arranged on the inner edge of the substrate and extending outwards, the inner hole axis of the marrow entering sleeve coincides with the center of femur marrow cavity, one positioning sleeve is arranged on each of two sides of the lower side of the marrow entering sleeve, the two positioning sleeves are fixed on the femur condylar bone surfaces, the connection line of centers of end surfaces of the two positioning sleeves coincides with the rotating axis of the femur condyle, the limit wall at least comprises an inner side front end wall, an inner side left end wall and an inner side right end wall. By initial limit and connection and fixation of the positioning sleeves and the femur condylar bone surfaces, a guide is firmly connected and fixed with the femur condylar bone surfaces, the axis of the marrow entering sleeve coincides with the center of the femur marrow cavity and the connection line of centers of end surfaces of the two positioning sleeves coincides with the rotating axis to construct a real-time coordinate system toprovide basis reference for surgery.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to an osteotomy navigation device for total knee arthroplasty. Background technique [0002] Total knee arthroplasty is an operation performed in the case of severely damaged knee joints, which can effectively eradicate advanced knee joint pain and greatly improve the patient's quality of life. Correct osteotomy is crucial to reconstructing the line of force and rotation axis of the lower limbs. The existing technology uses an osteotomy guide plate for osteotomy guidance, and its accuracy is improved compared with the traditional empirical osteotomy. However, since the shape of the human knee joint is a special-shaped surface, and the osteotomy guide basically adopts a side positioning surface and a positioning hole, it is difficult to form an effective fixation, resulting in displacement during the osteotomy operation, which affects the accuracy of the osteotomy, and u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B34/20
CPCA61B17/1732A61B17/1767A61B34/20
Inventor 孙茂淋何锐何鹏范华全
Owner THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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