Broken nail extractor

Abstract

The invention discloses a broken nail extractor. The broken nail extractor comprises a round tube with a milling opening and a locking opening, wherein milling teeth extending downwards are annularly arranged on the milling opening of the round tube, a polygonal clamp piece is mounted at the upper end of the round tube through a connecting mechanism, an inner barrel with the opening arranged downwards is inserted into the round tube, clamping pieces extending downwards and supported to be open towards the outside are annularly arranged at the opening of the inner barrel at intervals, clamping teeth extending axially are arranged on the inner walls of the clamping pieces, all the lower ends of the clamping pieces are positioned on the axial extension locus of the round tube, a polygonal column is fixedly arranged at the upper end of the inner barrel, external threads are arranged in the middle of the inner barrel, and internal threads in screwing match with the external threads are arranged in the middle of the inner wall of the round tube. The broken nail extractor has the effects that the outer ends of broken nails can be fixed and connected rapidly, in addition, the broken nails can be screwed out smoothly, the operation is convenient, one person can complete the operation, moreover, the wound surface is small, and thus the rapid rehabilitation after the operation can be benefited.

Description

technical field [0001] The invention relates to a broken nail extractor. Background technique [0002] Fracture is a common accidental injury. Once a fracture accident occurs, the first consideration is to position the fracture site with a steel plate to assist the reconnection of the broken bones. In order to ensure that the steel plate will not shift after erection, multiple screws are used to fix the steel plate to the broken bone when the steel plate is erected. After the broken bone has healed, the plate needs to be removed, that is, the screws are screwed out of the bone. Since the erection time of the steel plate is short, it may be several months or several years, which often leads to the phenomenon that the screw and the bone grow together, and because the steel plate is erected for too long, the fatigue strength of the screw reaches the limit, resulting in the screw being damaged when the steel plate is taken out. The phenomenon of twisting off occurs. [0003] ...

AI Technical Summary

Problems solved by technology

At present, because there is no special tool for removing broken nails, tools such as engineering pipe wrench and large-mouth pliers are generally used to forcibly remove the nails.

Due to the huge volume of these tools, it is often necessary to cut a larger wound, and an electric drill is needed to drill the bone around the broken nail so that the above-mentioned tools can clamp the broken nail, so the damage to the bone is also relatively large, causing the patient to be injured when taking the broken nail. Need to rest for a long time after nailing

The above nail removal method generally requires the cooperation of multiple people to complete, and the work efficiency is low

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