Knee joint anterior cruciate ligament tibial insertion avulsion fracture reduction fixing and guiding device

Abstract

The invention discloses a knee joint anterior cruciate ligament tibial insertion avulsion fracture reduction fixing and guiding device which comprises a sleeve; a frame body is arranged in the sleeve, and the frame body is of a cuboid structure with two transparent ends; a sliding groove is formed in the upper edge of the frame body, a moving block is arranged on the sliding groove, one side of the moving block is connected with a connecting rod, the other end of the connecting rod extends into the frame body, the other end of the connecting rod is connected with an adjusting piece, the other end of the adjusting piece is connected with an inner cylinder, the inner cylinder is fixed into the frame body through the adjusting piece, the lower end of the inner cylinder is flush with the sleeve, and the inner cylinder can horizontally move in the frame body through the adjusting piece; the sleeve with the positioning hole is arranged, an avulsion fracture block is fixed through the fixing needle, then the guide needle is guided in through the inner cylinder arranged in the sleeve, the avulsion fracture block is prevented from shifting when the guide needle is driven in, and the accuracy of guide needle positioning is improved.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and in particular relates to a reduction and fixation guide device for avulsion fracture of anterior cruciate ligament tibial insertion of knee joint. Background technique [0002] The avulsion fracture of tibial insertion refers to the avulsion fracture at the insertion point of the bone caused by the upper end of the tibia under the pull of external force. It is a special kind of fracture. After the avulsion fracture occurs, local Swelling and pain, as well as limitation of motion, are very similar to most soft tissue injuries. If the avulsion fracture of the tibial tuberosity is not displaced, or if there is a slight displacement, and the general fracture gap does not exceed 0.5cm, conservative treatment can be used at this time. It can be fixed with plaster for 4 to 6 weeks, and then gradually To exercise the function of the knee joint. If the displacement of the tibial tubercle...

AI Technical Summary

Problems solved by technology

[0003] At present, for severe avulsion fractures of the tibial insertion, if Kirschner wires are used for fixation, because the Kirschner wires are thinner, the fixation effect for larger fracture gaps is poor, the rigidity is low, it is not easy to fix, and it is easy to dislocate in the later stage; Hollow screws need to be used for positioning. At present, for the use of hollow screws, the guide pin is generally inserted first, then the hollow hole is drilled, the depth is measured, and finally the hollow screw is screwed into the hollow screw through the guide pin for fixation. However, for smaller tibial insertions For avulsion fractures, it is not easy to locate the avulsed bone block directly by using the guide pin, and it is difficult to fix it. The hollow screw is introduced only through the guide pin, and the positioning is difficult when the guide pin is opened, and the accuracy is poor. Perforation, causing secondary harm to the patient

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