A hollow screw guide device for femoral neck

Abstract

The invention discloses a femoral neck hollow screw guide device, comprising a main body frame, the main frame is provided with an opening, a positioning rod is inserted through the opening, the main frame is provided with a threaded cylindrical table, and the threaded cylindrical table and the main body frame are fixedly connected , non-movable, the threaded cylindrical table is engaged with a hollow nail force applicator, the main frame also includes an instrument panel, the instrument panel includes a connecting ring, a connecting plate, a fan-shaped disk, the connecting plate is also provided with a fan-shaped disk, and the fan-shaped disk is provided with fixed hollow nails The channel is evenly distributed on the surface of the fan-shaped disc, and the channel can place hollow screws and limit its displacement. After adopting this structure, the femoral neck hollow screw guide device for hollow screw implantation can be quickly realized. The cannulated screw is placed in the guide plate of the device, so that the position and direction can be determined in advance, thereby greatly improving the accuracy of the cannulated screw implantation.

Description

technical field [0001] The invention relates to medical equipment, in particular to a hollow nail guiding device for femoral neck. Background technique [0002] Femoral neck fracture is the most common injury of the hip, and its incidence is second only to distal radius fracture in systemic fractures. More than 90% of such fractures have a large displacement, and because of the relatively large leverage at the fracture site, the skeleton is unstable At present, the options usually chosen by medical staff are 1. Sliding internal fixation: use existing compression nails or needles of various styles, slide them in special sleeves, and when there is absorption on both sides of the fracture line When there is a gap, the nail slides into the sleeve and shortens to keep the fracture ends in close contact, which is more conducive to the intercalation of the fracture ends. 2. Pressurized internal fixation. This method uses a pressurizing device to make the fracture ends interlock wit...

AI Technical Summary

Problems solved by technology

[0002] Femoral neck fracture is the most common injury of the hip, and its incidence is second only to distal radius fracture in systemic fractures. More than 90% of such fractures have a large displacement, and because of the relatively large leverage at the fracture site, the skeleton is unstable At present, the options usually chosen by medical staff are 1. Sliding internal fixation: use existing compression nails or needles of various styles, slide them in special sleeves, and when there is absorption on both sides of the fracture line When there is a gap, the nail slides into the sleeve and shortens to keep the fracture ends in close contact, which is more conducive to the intercalation of the fracture ends. 2. Pressurized internal fixation. This method uses a pressurizing device to make the fracture ends interlock with each other to facilitate healing , and femoral neck fractures are treated with closed reduction and internal fixation with cannulated screws. Before implanting cannulated screws, X-ray scanning and analysis of the fracture site is performed first. The first guide pin is inserted into the surgical site, and after the position is fixed, the follow-up hollow screw is inserted. Since the femoral neck is not exposed during the operation, after the first guide pin is inserted, the implantation of the hollow screw cannot be guaranteed to be placed in the ideal position due to the lack of necessary reference , often requires multiple nail penetrations to achieve, repeated nail penetration may also cause fracture fixation is not reliable, and requires a high level of operator experience

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