Tibia adjustment base

Abstract

The invention provides a tibia adjustment base. The tibia adjustment base comprises a mounting base, triggers and an adjustment wheel, the mounting base comprises a stand column and a base which are connected up and down, two triggers are symmetrically arranged at the left side and the right side of the stand column, a lateral U-shaped opening is formed in the middle of the base, the adjustment wheel is rotatably connected into the U-shaped opening, the adjustment wheel can move outward in the depth direction of the U-shaped opening, the base is provided with a positioning rod hole which runs through the upper side wall and the lower side wall of the U-shaped opening, the adjustment wheel is provided with a threaded hole corresponding to the positioning rod hole, the hole diameter of the threaded hole is identical to that of the positioning rod hole, and the threaded hole is matched with a thread on a tibia near end extramedullary positioning rod. In the tibia adjustment base, coarse tuning is conducted on the tibia osteotomy position by sliding the positions of the adjusting base up and down, the adjusting wheel is adopted to be matched with the thread on the tibia near end extramedullary positioning rod, fine tuning of the tibia osteotomy position is achieved, and the osteotomy amount is precisely determined; the osteotomy surfaces with different inclinations are provided through different slant angles of the stand column of the mounting base for choices of different surgery modes.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to a tibia adjusting seat. Background technique [0002] The knee joint is the largest and most complex joint in the human body. Knee replacement is one of the effective ways to treat knee joint diseases such as degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis, flexion deformity, etc., and related research is also receiving more and more attention. [0003] Artificial knee joint surface replacement surgery mainly involves the replacement of femoral components and tibial components to replace damaged knee joints. Among them, when performing osteotomy on the tibia, it is necessary to determine the accurate osteotomy amount, osteotomy position, posterior angle, varus angle and valgus angle. [0004] Among them, the determination of the amount of osteotomy is generally realized by the tibial depth sounder. The tibial depth sounder needs to be connected wit...

AI Technical Summary

Problems solved by technology

[0004] Among them, the determination of the amount of osteotomy is generally realized by the tibial depth finder, which needs to be connected with the orientator for adjusting the posterior inclination angle, varus angle and valgus angle when in use, and the tibial depth finder needs to be realized. For height adjustment, the existing adjustment mechanism directly connects the tibial depth finder with the proximal tibial extramedullary directional rod under the directional device, and adjusts the height and position of the tibial depth finder by manually sliding up and down. The adjustment accuracy is determined by the medical staff. The working experience of the personnel is limited, and the adjustment and alignment speed is slow, and the accuracy is not easy to control, which prolongs the operation time and is not conducive to the patient's postoperative recovery

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