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Tibia osteotomy positioning device

A positioning device and osteotomy technology, applied in medical science, surgery, etc., can solve the problem of inaccurate anteroposterior tilt of the tibia, achieve precise and convenient operation, and overcome inaccurate alignment

Active Publication Date: 2012-10-24
GUANGDONG STABLE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the technical problems of existing extramedullary positioning osteotomy devices that control varus, internal and external rotation, and tibial anteroposterior tilt, the present invention provides a tibial osteotomy positioning device with simple operation and accurate alignment

Method used

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  • Tibia osteotomy positioning device
  • Tibia osteotomy positioning device

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Embodiment Construction

[0016] see figure 1 , the present invention comprises an osteotomy plate and a positioning rod, the osteotomy plate is fixedly connected to the top of the positioning rod, and there are two horizontal osteotomy grooves for the osteotomy saw blade to pass through, the distance between the osteotomy grooves is 2 mm, and the osteotomy At the same time, there are six nail holes for fixing the osteotomy plate after the positioning is completed and the positioning rod is removed. There are two symmetrical parallel nail holes and one oblique nail hole on each side of the osteotomy groove. The spacing between the parallel nail holes is 2 mm. The positioning rod is provided with a contact screw for nailing into the tibial anterior border cortex for positioning. At the same time, the positioning rod includes a proximal positioning rod and a hollow distal positioning rod. The proximal positioning rod is sleeved in the distal positioning rod. The osteotomy plate is fixedly connected to t...

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Abstract

The invention discloses a tibia osteotomy positioning device which is used for artificial total knee prosthesis replacement operation. The tibia osteotomy positioning device comprises an osteotomy plate and a positioning rod, the osteotomy plate is fixed at the top end of the positioning rod, and contact screws which are used for being nailed into tibia ridge front edge bone cortex for positioning are arranged on the positioning rod. The device has the advantages that the structure is simple, the positioning is accurate, the operation and the usage are convenient, during knee prosthesis replacement, inside and outside turning, rotation and hypsokinesis can be excellently controlled to perform a marrow outside positioning tibia osteotomy in tibia osteotomy operation, and the defects that tibia osteotomy positioning devices in prior art are inaccurate in alignment, complicated in operation, and unstable caused by human factors and the like are overcome. The two contact screws are nailed into the tibia ridge for fixture, so that the upper end of a positioning device is not required to be in contact with a tibial platform, and the osteotomy plane is determined mainly according to the tibia ridge.

Description

technical field [0001] The invention relates to a tibial osteotomy positioning device used in artificial knee replacement to ensure that the tibial osteotomy has no varus, no rotation, and is fixed with 5 degrees of retroversion. Background technique [0002] In artificial knee replacement surgery, tibial osteotomy is an important step, and the design and installation of the osteotomy positioning device is directly related to the line of force and thickness of the tibial osteotomy, and will also affect the success or failure of the entire operation. At present, the devices used to prevent varus and retroversion in knee arthroplasty are generally divided into intramedullary positioning osteotomy devices and extramedullary positioning osteotomy devices. [0003] Common intramedullary positioning osteotomy devices can be found in the "intramedullary positioning bracket" disclosed by the patent No. 201020193609, which generally has a main body, vertical beams, vertical rails, cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56
Inventor 雷光华高曙光罗伟姜未张方杰徐迈曾超
Owner GUANGDONG STABLE MEDICAL TECH CO LTD
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