Special bolt driver for bone screw

Abstract

The invention relates to the technical field of medical appliances, in particular to a special bolt driver for a bone screw. The special bolt driver comprises a handle and a bolt driver body, and is characterized in that the front end of the bolt driver body is provided with two teeth; the back end of the bolt driver body is provided with a locating block; the teeth are made of stainless steel materials, dental cusps of the teeth are opposite; a direction-turning device groove is arranged in the handle; and a direction-turning device is arranged in the direction-turning device groove and formed by a rotating shaft, a gear wheel, a cone, a locating ball, a spring, the locating plate, a locating sleeve and a wrench pin. Because the structure is adopted, the special bolt driver for the bone screw can be detachably stored, is beneficial to carrying and disinfection, and has the advantages of novel structure, fastness, reduction of patient pains, convenience for installation and disassembling and the like.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a special screwdriver used in conjunction with bone screws. Background technique [0002] Locking plates and locking screws are often used clinically in orthopedics. Locking screws are composed of a nail body and a nail cap. The nail body is usually thin and short, the nail cap is thin, and the groove on the nail cap is shallow. When removing the locking plate, it is necessary to Use a screwdriver to take out the locking screws fixed on the locking plate. During the process of removing the screws, some locking screws may be fixed due to the long internal fixation time or because the orthopedic doctor used too much force when tightening the locking screws with the screwdriver, resulting in Difficulty in removing the screw is not uncommon in clinical practice, and there is no better method for this clinically. Some use an industrial drill to drill off the screw cap, re...

AI Technical Summary

Problems solved by technology

[0002] Locking plates and locking screws are often used clinically in orthopedics. Locking screws are composed of a nail body and a nail cap. The nail body is usually thin and short, the nail cap is thin, and the groove on the nail cap is shallow. When removing the locking plate, it is necessary to Use a screwdriver to remove the locking screws fixed on the locking plate. During the process of removing the screws, some locking screws may be fixed due to the long internal fixation time, or because the orthopedic doctor used too much force when tightening the locking screws with the screwdriver, resulting in Difficulty in removing the screw is not uncommon in clinical practice, and there is no better method for this clinically. Some use an industrial drill to drill off the screw cap, remove the steel plate, and then use a hollow drill to get the screw. There are also industrial flat drills. The steel is driven into the screw cap and rotated out. These methods are more harmful to the patient. So far, there is no special tool for removing the screw clinically.

Images