Positioning and guiding device for bone joint operation

By designing a positioning and guiding device for bone and joint surgery, and utilizing a combination structure of a stop bar, a slide bar, and a guide tube, the problem of screw placement misalignment was solved, achieving accurate screw positioning and stable placement, and improving the stability and safety of the device.

CN224155739UActive Publication Date: 2026-04-24THE SECOND AFFILIATED HOSPITAL OF LUOHE MEDICAL COLLEGE
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Patent Information

Application Number
CN202520053236.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2026-04-24
Estimated Expiration
2035-01-10

AI Technical Summary

Technical Problem

Existing fracture fixation devices are prone to screw displacement in irregular fractures such as calcaneal fractures, leading to repeated screw insertion, increasing the risk of nerve, blood vessel and calcaneal injury, and have poor stability.

Method used

A surgical positioning and guiding device for bone and joint surgery was designed, including a stop bar, a slide bar, a clamping bar, and a guide tube. The calcaneal tube is clamped by the clamping bar and the slide bar, and the guide tube guides the screw insertion. The anti-slip texture and screw sleeve are combined to increase stability. The position of the guide tube is adjusted to accurately insert the screw.

Benefits of technology

This method achieves accurate screw positioning and stable insertion, reduces repeated operations, improves the stability of the device, and reduces the risk of damage to nerves, blood vessels, and the calcaneus.

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Abstract

The utility model relates to the technical field of bone joint operations, in particular to a positioning and guiding device for bone joint operations. Comprising a stop lever, a sliding rod perpendicular to the stop lever is slidably inserted into the stop lever, a hook claw is machined at the end, away from the stop lever, of the sliding rod, a clamping rod is elastically slidably connected to the stop lever on one side of the sliding rod, the clamping rod is parallel to the sliding rod, an oblong hole is formed in the stop lever between the clamping rod and the sliding rod, and the length direction of the oblong hole is parallel to the length direction of the stop lever. An annular groove corresponding to the oblong hole is formed in the side, facing the hook claw, of the stop lever, the annular groove is in an oblong shape, two baffle rings are installed in the annular groove, a guide pipe is concentrically fixed to the baffle rings and penetrates through the oblong hole, a thread sleeve is connected to the outer side of the guide pipe in a threaded mode, and the thread sleeve tightly abuts against the stop lever. According to the device, the clamping rods are arranged, the clamping rods and the sliding rods can clamp the calcaneal tuberosity, and the stop rods can be effectively stabilized.
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