osteotomy guide

Abstract

The invention discloses an osteotomy guide, which comprises an adjustment piece, a chamfered osteotomy piece, an anterior osteotomy piece, a rear side osteotomy piece and a selection piece, the adjustment piece includes a rod part and an abutment part; the chamfered osteotomy piece The position of the part is relatively adjustable and connected with the adjustment part; the front osteotomy part is slidably connected to the first side of the chamfered osteotomy part through the first guiding structure, and is flexibly connected with the adjustment part through the first connecting structure; the posterior osteotomy part The part is slidably connected to the second side of the chamfered osteotomy part through the second guiding structure, and is flexibly connected with the adjustment part through the second connection structure; At the same time, the position of the anterior osteotomy relative to the adjustment part and the position of the posterior osteotomy relative to the adjustment part are changed. The invention conveniently and quickly realizes the synchronous adjustment of three osteotomy parts, saves operation time, and greatly reduces operation risk and pain of patients.

Description

technical field [0001] The present invention relates to osteotomy guides. Background technique [0002] Knee replacement, as a treatment for osteoarthritis and other diseases, has been carried out clinically for many years. The market is dominated by superficial knee replacement surgery. After the patient's femur and tibia are osteotomized, the diseased part is removed, and an artificial knee is placed. joint prosthesis. Among them, the osteotomy tool is an important surgical instrument, which can be divided into femoral osteotomy and tibial osteotomy. Such as figure 1 As shown, the bone-facing surface of the femoral prosthesis includes five surfaces, P1 is the anterior osteotomy surface, P2 and P4 are chamfered osteotomy surfaces, P3 is the distal osteotomy surface, and P5 is the posterior osteotomy surface, so the femoral Osteotomy, including distal femoral osteotomy, chamfer osteotomy, and anteroposterior osteotomy. The distal femoral osteotomy uses the distal osteoto...

AI Technical Summary

Problems solved by technology

The distal femoral osteotomy uses the distal osteotomy guide, and other femoral osteotomies use the 4-in-1 osteotomy guide. Since each person’s femur is different in size, the corresponding femoral prosthesis also has different specifications. Now the market mainly uses 4-in-1 osteotomy guides. Each specification of the 1-in-1 osteotomy guide corresponds to the corresponding prosthesis specification, that is, each femoral condyle prosthesis corresponds to a 4-in-1 osteotomy guide, which not only increases the processing cost, but also takes up more space in the instrument box

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