A nail holding device

Abstract

The invention discloses a nail holding device which comprises a clamping rod and a limiting rod. The clamping rod is of a hollow structure, the limiting rod is sleeved with the clamping rod, a clamping claw and a boss are sequentially arranged at one end of the clamping rod, and the clamping claw is matched with the head of a screw. The limiting rod comprises a limiting part and a body which are connected, the size of the limiting rod is increased from the limiting part to the body portion, and the boss is opened or closed up when the clamping rod performs reciprocating motion on the limiting rod. The clamping rod and the limiting rod in the nail holding device are matched in use, the clamping claw is matched with the head of the screw in shape, and the clamping rod has elasticity, is large in holding force and does not easily fall. The nail holding device is of a whole structure, is free of assembly, is not needed to be dismounted for sterilization and disinfection and is small and exquisite in structure, a production process is simplified, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a nail holding device. Background technique [0002] Medical staff often use screws in operations. Due to their small size, it is very difficult to clamp screws. In order to facilitate clamping screws and reduce operation time, medical staff urgently need a fast and convenient clamping screw. special tools. [0003] The current prior art mainly discloses the following nail-holding devices: [0004] The first type of nail holding device: see figure 1 , is assembled by the nail rod 1, the outer sleeve 2, the spring 3 and the sealing cap 4. During use, the spring 3 is used to push the outer sleeve 2 to move relative to the nail-holding rod 1. Since the diameter of the outer sleeve 2 is smaller than the size when the claws of the nail-holding rod 1 are stretched, the claws of the nail-holding rod 1 shrink to clamp the screw. This device has the following disadvantages...

AI Technical Summary

Problems solved by technology

This device has the following disadvantages: 1. The structure is complex, and the size matching and assembly requirements of the nail holder 1, the outer sleeve 2 and the sealing cap 4 are high; 2. It is assembled from multiple components, and there will be blood stains left in the assembly after the operation. Joints, such as between the cap 4 and the nail holding rod 1, between the spring 3 and the outer sleeve 2, etc., are very time-consuming and labor-intensive when disassembling, sterilizing, and disinfecting

This device has the following disadvantages: 1. The holding force is small, which can easily cause the screw to fall; 2. The head of the wrench is punched, which reduces the strength and life of the wrench

This device has the following disadvantages: 1. The nail holding effect is not good, and it will shake when the screw is tightened

2. The rod of the bracket may cause damage to the incision soft tissue

[0007] The above shortcomings of the nail-holding device are very insufficient for the nail-holding effect. Therefore, it is necessary to provide a nail-holding device that can overcome these shortcomings and realize the nail-holding function.

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