Cross-shaped screw-holding screwdriver

Abstract

The invention discloses a cross-shaped screw-holding screwdriver which comprises a screwdriver rod, a screw-holding sleeve pipe and a pipe pushing sleeve. The screwdriver rod, the screw-holding sleeveand the pipe pushing sleeve are coaxially and slidably arranged, the inner wall of a first cavity formed by the axis of the screw-holding sleeve pipe is attached to the outer wall of the screwdriverrod, and a second cavity formed by the axis of the pipe pushing sleeve is attached to the outer wall of the screw-holding sleeve pipe. Cross-shaped patterns are formed at the front end of the screwdriver rod, the front end of the screw-holding sleeve pipe is divided into four elastic clamping pieces through a cross-shaped groove formed in the axial direction of the screw-holding sleeve pipe, and aclamping cavity for clamping the tail end of a cross-shaped screw is formed between the inner sides of the front ends of the elastic clamping pieces and the outer side of the front end of the screwdriver rod. The four elastic clamping pieces are gathered towards the axis through the pipe pushing sleeve so that the cross-shaped screw can be clamped in the clamping cavity. The cross-shaped screw-holding screwdriver is used in a conventional cervical vertebra operation and can effectively and quickly hold a screw, the problems of screwing slowly, blocking of sight and not effectively grasping angles are solved for a doctor, and a simple and quick screw driving tool is provided for the cervical vertebra operation. Intraoperative operation is stable, operation efficiency is high, and safety and reliability are achieved.

Description

technical field [0001] The present application relates to surgical operations, in particular to a cross nail driver. Background technique [0002] During surgery, the screwdriver is directly inserted into the cross groove of the screw nut, and slowly rotated in or out. [0003] Existing equipment usually has the following problems: [0004] 1. The screw cannot be held, the operation is cumbersome and inconvenient, and it is time-consuming. [0005] 2. Part of the screwdriver that can be held has a thick diameter, which blocks the line of sight and is inconvenient to operate. [0006] 3. If the size of the cross groove on the head of the screw is too large, it will cause the screwdriver and the screw to be skewed, and the screw cannot be installed at the preset angle, which will easily cause the operation to fail. Contents of the invention [0007] The object of the present invention is to provide a cross nail driver, which is used for holding and putting screws to compl...

AI Technical Summary

Problems solved by technology

[0004] 1. The screws cannot be held and removed, the operation is cumbersome and inconvenient, and it is time-consuming

[0005] 2. Part of the screwdriver that can be held has a thick diameter, which blocks the line of sight and is inconvenient to operate

[0006] 3. If the size of the cross groove on the head of the screw is too large, it will cause the screwdriver and the screw to be skewed, and the screw cannot be installed at the preset angle, which will easily cause the operation to fail

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