Installing tool of pedicle screw fixation system

Abstract

The invention provides an installing tool of a pedicle screw fixation system. The pedicle screw fixation system comprises a screw, a screw rod and a screw plug. The installing tool comprises a positioning tube, a screw feeding rod and a screw plug installing rod, wherein the positioning tube comprises a left clamping arm and a right clamping arm, the front-end inner sides of the left clamping arm and the right clamping arm are provided with positioning grooves matched connection with the screw respectively, openings for the screw rod to penetrate are formed in the positioning tube, penetrating channels in the axial direction of the positioning tubes are formed in the middles of the left clamping arm and the right clamping arm, the upper screw rod can be inserted into the penetrating channels of the positioning tube for screw installation, and the screw plug installing rod can be inserted into the penetrating channels of the positioning tube to install the screw plug. The installing tool performs positioning by using the positioning tube and is always used in follow-up work, screw feeding, rod arrangement and screw plug installation are performed by being matched with the positioning tube, the usage rate of the tool is effectively reduced, the operation is simple and convenient, and the operation efficiency is greatly improved.

Description

technical field [0001] The invention relates to a spinal surgery medical instrument, in particular to a spinal nail rod system installation tool. Background technique [0002] As a surgical implant, the spinal screw-rod system is a commonly used internal fixation system in spinal surgery. Its indications mainly include: 1) spinal trauma; 2) degenerative diseases; 3) spinal tumors; 4) spinal infectious diseases. Disease; 5) Congenital deformity of the spine. [0003] The spinal rod system is mainly composed of screws, rods and plugs. The screw consists of a nail body and a nail seat. The nail body has external threads for screwing into the spinal bone. The nail seat is provided with a U-shaped groove for placing the nail rod. The inner wall of the U-shaped groove has a threaded interface, and the nail seat can pass through the The threaded interface is firmly connected with the screw plug. [0004] During the operation, the implantation process of the spinal screw-rod syst...

AI Technical Summary

Problems solved by technology

[0007] Based on the above, the current surgical operation is more complicated, because the nailing process, rod setting process and screw plug installation are independent of each other, and they need to use different equipment for operation, thus prolonging the operation time

Moreover, because the shape of the nail rod is uncertain during the actual operation, the technical requirements for the operator are relatively high when placing the rod, which also prolongs the operation time to a certain extent.

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