Device for high tibial osteotomy

Abstract

The invention relates to the field of medical instruments, in particular to a device for high tibial osteotomy. The device comprises a near-end component, a far-end component, a connecting bridge component, Kirschner wires, a fixing component and a calibration force line component, wherein the near-end component and the far-end component are located at the two ends of the connecting bridge component respectively and fixed to a tibia through Kirschner wires; the calibration force line component is connected with the near-end component through a bolt; and the fixing component is attached to thesurface of the tibia having undergone force line correction and connected with the near end and the far end of the tibia through Kirschner wire hole sites. According to the invention, the design of bony wainscots for the near end and the far end of the tibia is adopted, so the area of a tibia incision near an osteotomy line can be reduced, an operative wound is narrowed, and tissue around the osteotomy line is better protected; the device integrates three functions of osteotomy, force line correction and temporary immobilization and steel plate installation in a high tibial osteotomy operation; operation steps are simplified, operation time is shortened, operation risks are reduced, and the effect of treating knee osteoarthritis through the high tibial osteotomy operation can be better promoted.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a high tibial osteotomy device. Background technique [0002] When osteoarthritis occurs in the knee joint, the proximal end of the tibia (high position) is often deformed. After the deformation, the knee joint is deformed such as varus, which makes the force on the knee joint unbalanced, and then the symptoms of knee osteoarthritis appear or aggravate. [0003] Therefore, there is a clinical surgical method that can specifically treat knee arthritis in the above situation, that is, high tibial osteotomy. The doctor performs osteotomy on the proximal tibia of the patient, then restores the bone angle of the tibia, and restores the line of force of the lower limbs, and then uses a steel plate Screws are used for internal fixation, so that the force on the knee joint is balanced, so as to achieve the purpose of treating knee arthritis. The operation generally requires three step...

AI Technical Summary

Problems solved by technology

[0005] (1) For the "osteotomy" step, the selection of the osteotomy line depends on experience, and the intraoperative operations such as the direction of osteotomy and the depth of osteotomy are purely based on hand feeling, which is imprecise and easy to damage the surrounding tissues;

[0006] (2) For the step of "correcting the alignment and temporary fixation", correcting the alignment and angle of the tibia after osteotomy depends entirely on the operator's experience and intraoperative fluoroscopy confirmation, which requires multiple attempts and a large amount of intraoperative radiation exposure. Still inaccurate, often incomplete orthopedics;

[0009] (1) These devices generally can only complete the two steps of "assisting osteotomy" and "assisting temporary fixation to correct the line of force";

[0010] (2) The bone veneers of these devices are all concentrated in the proximal tibial incision. In order to obtain the only good fit to the target bone area, the area of ​​the bony veneer is relatively large, and soft tissue stripping is required during the operation. Wide range, resulting in excessive surgical trauma;

[0011] (3) The temporary fixation function of these devices is not reliable, because the distance between the components of the device is short, and the osteotomy still shakes during temporary fixation;

[0012] (4) Osteotomy devices and temporary fixation devices often need to be designed and installed separately, the operation steps are cumbersome, and the production cost is high;

[0013] (5) These devices are often unable to guide the installation of the tibial plate. In many cases, the installation area of ​​these devices conflicts with the installation area of ​​the plate, and in most cases hinders the installation of the plate

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