Modification assembly for tibial plateau osteotomy surface

Abstract

The invention relates to the technical field of medical instruments, in particular to a modification assembly for a tibial plateau osteotomy surface. The modification assembly comprises a drill bit, a positioning guide plate and a bone cutter, the outline of an osteotomy surface limiting plate of the positioning guide plate is matched with a tibial plateau osteotomy surface , the inner side surface of a bone side surface limiting plate of the positioning guide plate is attached to one side surface of the tibia, and positioning of the tibia in at least two directions is achieved through the positioning guide plate; punching is realized through cooperation of the drill bit and the positioning guide plate, cutting of a long hole is realized through cooperation of the bone cutter and the positioning guide plate, the positioning guide plate only needs to be installed once in the whole modification process till modification of the tibial plateau osteotomy surface is completed. In the whole modification process, positioning is more accurate through modification datum fixing, the operation is easy and convenient, and accurate positioning and installation of the tibia tray prosthesis can be realized in an auxiliary manner.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a tibial plateau osteotomy surface modification component. Background technique [0002] The osteotomy of the tibial side in knee replacement surgery is usually divided into two main steps, one is to perform platform osteotomy to obtain the osteotomy surface for installing the tibial tray prosthesis, and the other is to modify the osteotomy surface. Drill holes on the bone surface and resect the bone interfering with the bottom structure of the tibial tray, so that the tibial tray prosthesis can be inserted into the tibial medullary cavity smoothly. [0003] The bottom structure of the existing tibial tray prosthesis usually consists of a limiting column and two side wings. The limiting column is generally cylindrical, and the side wings are located on both sides of the limiting column to strengthen the mechanical strength of the tibial tray and limit the rotation of the ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an easy-to-operate tibial plateau osteotomy surface modification assembly, which can modify the tibial plateau osteotomy surface, assist in the precise positioning and installation of the tibial tray prosthesis, and solve the complicated and difficult operation in the current technology. The problem of relying too much on the surgeon's personal experience

Images