Kirschner wire positioning instrument for pelvic fracture closed reduction

Abstract

The invention belongs to the field of operation auxiliary tools, and particularly relates to a kirschner wire positioning instrument for pelvic fracture closed reduction. The kirschner wire positioning instrument comprises a reference ring, wherein an adjusting ring is arranged beside the reference ring, a spherical cavity section is arranged in an annular cavity of the adjusting ring, a sphericalhead is arranged in the spherical cavity section in a spherical fit manner, a positioning hole allowing a kirschner wire to penetrate through is coaxially formed in the spherical head relative to theadjusting ring in a penetrating manner, and the hole diameter of the positioning hole cooperates with the outer diameter of the kirschner wire to be penetrated through; and the reference ring and theadjusting ring are fixedly connected with each other through an adjusting rod capable of adjusting the length in the axial direction, and the lower ring surface of the adjusting ring and the lower ring surface of the reference ring are located on the same reference plane. Through the kirschner wire positioning instrument, the proper distance and angle can be quantitatively achieved, the operationaccuracy and safety are greatly improved, the radiation damage to a doctor and a patient due to long-time repeated fluoroscopy is reduced, and convenience and efficiency of an actual pelvic fractureclosed reduction operation are improved.

Description

technical field [0001] The invention belongs to the field of surgical aids, in particular to a Kirschner wire locator for closed reduction of pelvic fractures. Background technique [0002] Pelvic fracture is a type of fracture with a high fatality rate caused by high-energy external force. It is more common in young adults, and is often seen in car accidents and falls from heights. The types of fractures are complex. If good reduction and fixation cannot be obtained, patients often need to stay in bed for a long time or have walking and labor dysfunction. Most of the previous surgical methods were open reduction and internal fixation, with a large surgical incision and a wide range of exposure, and a large amount of intraoperative blood loss and high surgical risk. [0003] In recent years, with the in-depth research on the anatomical structure of the pelvis and the development of internal fixation materials, closed reduction and internal fixation have become the main tren...

AI Technical Summary

Problems solved by technology

Although the ideal direction and position of the second guide pin were determined during the operation, due to the interference of soft tissues, the elasticity of the guide pin, or the technique of the surgeon, the precise adjustment was affected, and the ideal position was often not satisfactorily achieved.

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