Drill bit guider for high tibial osteotomy

Abstract

The invention discloses a drill bit guider for high tibial osteotomy. The drill bit guider comprises positioning rods, a positioning block, sliding rods, sliding rod locking bolts, a drill module anda universal adjustment mechanism, the quantity of the positioning rods is two, the front ends of the positioning rods are inserted into the knee joint cavity of a patient, and the middle portions or the rear ends of the positioning rods are fixedly connected with the positioning block; the sliding rods are inserted into through holes at the positioning block, and the sliding rod locking bolts arescrewed into threaded holes at the positioning block, and prop against the sliding rods; and the drill module is close to a position, needing spacer implantation, of the proximal tibia of the patient,and is connected with the sliding rods through the universal adjustment mechanism, and the drill module is provided with a row of drill bit guiding holes corresponding to the tibia of patient. The position and the angle of tibia drilling are adjusted by the sidling rods and the universal adjustment mechanism by using a tibial platform as a positioning reference, so the drilling difficulty is greatly reduced, thereby the drilling accuracy in high tibial osteotomy is ensured, the smooth implantation of the spacer is guaranteed, the operation efficiency is effectively improved.

Description

technical field [0001] The invention relates to a drill guide used in the treatment of knee osteoarthritis by high tibial osteotomy, and belongs to the technical field of orthopedic medical devices. Background technique [0002] Knee osteoarthritis (Knee osteoarthritis, KOA) occurs in about 50% of people over the age of 50, and medial compartment KOA accounts for 74%. . Academician Zhang Yingze found through a series of studies that uneven subsidence of the tibial plateau is an important factor causing medial compartment KOA. In order to effectively treat medial compartment KOA, the latest research achievement is to implant a spacer in the proximal tibia during proximal fibular osteotomy combined with high tibial osteotomy, which can effectively correct the knee joint force line and at the same time The compression fracture or collapse of the tibial plateau can be supported and reset to realize the comprehensive treatment of knee osteoarthritis patients with excessive varu...

AI Technical Summary

Problems solved by technology

However, in the actual operation, the drilling angles are often inaccurate or inconsistent, and there are also multiple drilling holes that are not aligned up and down, which affects the final shape of the long groove and is not conducive to the operation of placing the gasket

At the same time, since the drill bit is not restrained, the drilling operation needs to be performed very carefully, which greatly reduces the efficiency of the operation

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