Scaphoid Kirschner wire guiding device and use method thereof

Abstract

The invention discloses a scaphoid Kirschner wire guiding device and a use method thereof. The wrist joint is fixed in a fully stretching position, an ulnar inclination position and a thumb fixation retraction position through a wrist and palm fixing support so that a Kirschner wire can be placed from a scaphoid nodule easily; the wrist and palm fixing support is fixed through a fixing belt, and an inverted regular frustum type Kirschner wire positioning guiding plate is fixed on the front side of a wrist support of the wrist and palm fixing support through a fixing belt; the inverted regular frustum type Kirschner wire positioning guiding plate comprises an upper-layer porous plate, a lower-layer porous plate and a connecting rod between the two porous plates, the area of the upper-layer porous plate is large, the area of the lower-layer porous plate is small, the two porous plates are square, the two porous plates are connected through the connecting rod and then are in an inverted frustum shape, and round holes in the uniform size are uniformly formed in the two layers of porous plates. It is guaranteed that the Kirschner wire can be accurately placed in, the puncture frequency the Kirschner wire in the scaphoid is low, the damage to blood supply in the scaphoid can be effectively reduced, the fluoroscopy frequency can be reduced, and radiation hazards can be reduced.

Description

technical field [0001] The invention relates to a kirschner wire guiding device for scaphoid bone and its application method. Background technique [0002] Fractures of the scaphoid, one of the eight carpal bones in the wrist, are the most common carpal fractures. The shape of the scaphoid is irregular, 80% of the surface is articular cartilage, and only limited ligaments have nutrient vessels entering. Due to insufficient blood supply, especially after the fracture occurs, the blood supply is interrupted, so the nonunion rate and defect rate of the scaphoid fracture High rate of blood necrosis. How to place Kirschner wires or screws at the most suitable position in the irregularly shaped scaphoid (that is, at the long axis of the scaphoid) requires high surgical skills. If the initial placement of the Kirschner wire is inaccurate, it needs to be adjusted later. Every time the position of the Kirschner wire is adjusted, it needs to be re-drilled into the bone, causing furt...

AI Technical Summary

Problems solved by technology

If the initial placement of the Kirschner wire is inaccurate, it needs to be adjusted later. Every time the position of the Kirschner wire is adjusted, it needs to be re-drilled into the bone, causing further damage to the blood supply in the bone. X-ray fluoroscopy is required after each adjustment. Confirm whether the position of the Kirschner wire is accurate, frequent fluoroscopy will inevitably have adverse effects on patients and medical staff

In clinical practice, we found that there are deviations in the insertion of Kirschner wires into the scaphoid bone, mainly due to two factors: 1. The deviation of the insertion point; 2. The deviation of the Kirschner wire pointing

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