Tibia osteotomy tool system

Abstract

The invention discloses a tibia osteotomy tool system. The tibia osteotomy tool system comprises a wing-shaped osteotome, wherein an osteotomy guider is arranged at the lower end of the wing-shaped osteotome, and a tibia platform test mold is arranged at the lower end of the osteotomy guider; the wing-shaped osteotome comprises a guide rod, wing-shaped osteotome bodies, a lock catch and a spring,wherein the wing-shaped osteotome bodies are located in the middle of the guide rod; and the lock catch is located at the upper part of the guide rod, the spring is located at the position, corresponding to the lock catch, in the guide rod, two cutting edges are arranged on one side, away from the guide rod, of each wing-shaped osteotome body, and a groove is formed between every two cutting edges. After the wing-shaped osteotome completes osteotomy through the osteotomy guider, the osteotomy guider can be integrally brought out, and operation steps are simplified; the number of the cutting edges is increased, besides, each groove is additionally formed between every two cutting edges, and bone fractures during osteotomy can be avoided under the condition that sharpness of the cutting edges is guaranteed; and in addition, arranged fixing nails can fix the osteotomy guider and the tibia platform test mold to the tibia bone surface together, and instrument displacement during osteotomy is prevented.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a tibial osteotomy tool system. Background technique [0002] In the field of orthopedic joint replacement, due to the long development cycle of product implants, long feedback time, high risk, and relatively mature technology, the replacement of surgical tools has become the focus of major medical device companies. The diversification of functions, simplification of structure and simplification of operation of surgical tools have become a trend in their development. [0003] In knee replacement surgery, it is necessary to cut out the tibial plateau on the tibia, and then fix the tibial prosthesis on the tibial plateau. Put it into the hole, and finally fix the tibial prosthesis with screws. During this process, it is necessary to use a platform trial model to determine the position of the hole. The osteotomy guide assists in the direction of the hole. And there are some defe...

AI Technical Summary

Problems solved by technology

[0004] 1. The process of punching wing-shaped holes in the prior art is to first fix the platform trial mold on the tibial platform, then fix the osteotomy guide on the platform trial mold, and finally insert the wing-shaped osteotome into the osteotomy guide and The platform trial mold is used for drilling. After the drilling is completed, the wing-shaped osteotome needs to be removed, and then the osteotomy guide is removed, leaving the platform trial mold to enter the next operation step. The operation is cumbersome, which will increase the operation time and increase the operation time. risk;

[0005] 2. The osteotomy guide in the prior art is fixed between it and the platform test mold by means of screw tightening, and the punching process is to use a tool to strike the wing-shaped osteotome. During the knocking process, the osteotomy guide and the There will be slight movement between the platform trial molds, resulting in deviation, resulting in errors in the drilling angle, and deviation of the installation of the tibial prosthesis, resulting in failure of the operation;

[0006] 3. In the prior art, the pressure of the blade of the wing-shaped bone knife is relatively concentrated, and the pressure on a single direction is relatively large. When the bones meet, it is easy to cause the bone knife to deviate, resulting in inaccurate drilling and resulting in skewed prosthesis installation defects

[0007] The present invention is used to solve the above problems. Through a simple structure, it simplifies the operation steps, saves operation time, avoids bone cracks during osteotomy, and avoids the risk of inaccurate osteotomy that may exist in the current mainstream tools.

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