A push rod for connecting and placing an external positioning plate and a subcutaneous bone plate

Abstract

A push rod for connecting an external positioning plate with a subcutaneous bone plate and inserting it belongs to the technical field of orthopedic medical devices, and is used for positioning the bone plate in minimally invasive surgery. The technical solution is: the external positioning plate and the subcutaneous bone plate are connected correspondingly by the connecting structure of the push rod body, different bayonets or slots can be selected to make the positioning of the external positioning plate and the subcutaneous bone plate accurate, and the connecting head at the lower end of the push rod passes through The cardan shaft can adjust the tilt angle. The present invention has simple structure, convenient operation, high efficiency and practicality. The external positioning plate and the subcutaneous bone plate can be integrated into the predetermined position of the subcutaneous bone plate by using the push rod, and the subcutaneous bone plate can be accurately implanted and fixed with Kirschner wires through the external positioning plate. The screws are fixed. The present invention is an innovation of the insertion method of the external positioning plate and the subcutaneous bone plate, which solves the problems of inaccurate alignment and inconvenient insertion of the external positioning plate and the subcutaneous bone plate, reduces operation time, and improves the efficiency of minimally invasive surgery.

Description

technical field [0001] The invention relates to a push rod device for positioning a bone plate in a minimally invasive operation, and belongs to the technical field of orthopedic medical instruments. Background technique [0002] In orthopedic surgery for fracture treatment, plate fixation is a common internal fixation method for fractures. Plate fixation includes reconstruction plates, anatomical plates, and hook plates, among which anatomical plates are the most common. The currently widely used bone plate is a steel plate or a titanium strip with an arc-shaped end, on which a plurality of fixation holes for implantation nails are arranged. In use, it was found that after the bone plate was placed into the subcutaneous wound of the patient, there was often a deviation in the positioning and fixing of the bone plate, which not only affected the effect of the operation, but also increased the pain of the patient. Aiming at the limitations of conventional bone plate and impl...

AI Technical Summary

Problems solved by technology

The bone plate with this structure has achieved good results in clinical application, but there are still deficiencies. The main problem is that the connection between the subcutaneous bone plate and the bone plate that plays the role of extracutaneous positioning only relies on Kirschner wires for positioning. If it is not firm, it is prone to misalignment and displacement, which will cause great difficulties in the operation of the subsequent fixation screws, or even make it impossible.

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