Tibia osteotomy positioning device for knee joint replacement

A positioning device and osteotomy technology, which are applied in the directions of stereotaxic surgical instruments, applications, bone drill guidance, etc. The effect of popularization, low equipment cost and accurate calibration

Active Publication Date: 2020-11-27
GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

from Figure 4 As can be seen in the figure, there are large fluctuations and inaccuracies in the accuracy of positioning osteotomy (non-solid scattered points) using traditional metal rods
[0008] In summary, the positioning devices in the prior art either cannot be used multiple times, and the accuracy is low; or the operation is complicated and the cost is high

Method used

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  • Tibia osteotomy positioning device for knee joint replacement
  • Tibia osteotomy positioning device for knee joint replacement
  • Tibia osteotomy positioning device for knee joint replacement

Examples

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Embodiment Construction

[0035] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the present invention.

[0036] see figure 1 with figure 2 , a tibial osteotomy positioning device used in knee joint replacement provided by the present invention includes: an L-shaped handle 10 and an osteotomy gui...

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Abstract

The invention discloses a tibia osteotomy positioning device for knee joint replacement. The positioning device comprises an L-shaped handle and an osteotomy guide plate; the L-shaped handle comprisesa head part and a handheld part; the head of the L-shaped handle comprises a first connecting part and a first laser; the osteotomy guide plate comprises a second connecting part and an osteotomy positioning part; the first connecting part is matched with the second connecting part; the handheld part is provided with a second laser; and a laser beam emitted by the first laser is perpendicular toa laser beam emitted by the second laser. The tibia osteotomy positioning device is good in positioning effect, easy to operate, low in cost and easy to popularize and use on a large scale.

Description

technical field [0001] The invention belongs to the field of orthopedic knee joint prosthesis replacement systems, in particular to a tibial osteotomy positioning device used in knee joint replacement. Background technique [0002] Knee replacement surgery is currently a routine treatment for degeneration of the knee joint. In knee replacement surgery, the proximal tibial osteotomy is the most critical for the restoration of alignment after knee replacement surgery. When performing osteotomy, it is necessary to ensure that the osteotomy surface of the proximal tibia is perpendicular to the mechanical axis of the tibia in the coronal plane, which is the basis of all osteotomy operations in the whole knee replacement process. If the above two are not perpendicular and the deviation angle exceeds 3°, the service life of the knee joint prosthesis will be greatly shortened. [0003] In 1991, Jeffrey reported the 8-year follow-up results of 115 cases of TKA (Total Knee Arthropla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B90/13A61B90/00
CPCA61B17/1732A61B17/1764A61B90/13A61B90/06A61B2017/564A61B2090/061
Inventor 张国强倪明郑清源任鹏李俊成
Owner GENERAL HOSPITAL OF PLA
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