Guiding hollow screw with implantable filler

Abstract

The invention provides a guiding hollow screw capable of implanting a filler. The guiding hollow screw comprises a screw body, wherein a guide hole is formed in the screw body, the guide hole and the screw body are coaxially arranged, the diameters of the guide hole and the screw body are not uniform, the guide hole is used for positioning and implanting the screw body through a guide wire, the screw body comprises a screw rod and a screw tail, the screw tail is connected to the tail end of the screw rod, a first thread is arranged at the head end of the screw rod and used for rotationally implanting the screw body, an implanting hole is formed in the side wall of the screw rod and is communicated with the guide hole, and after the hollow screw is implanted and fixed at a fracture position, a filler can be implanted through the guide hole and the implantating hole to close a fracture gap. According to the invention, the hollow screw not only can meet the pressurizing internal fixation function of a conventional hollow screw, but also can implant fillers such as bone cement and the like into a relatively large fracture gap which cannot be closed through the implanting hole, so that the fracture gap is closed, callus formation is induced, and closure and recovery of the fracture gap are promoted.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a hollow screw with guiding implantable filler. Background technique [0002] Fracture refers to the interruption of the integrity and continuity of human bones, which makes the bones lose their support and movement to the human body. With the development of population aging and the increasingly developed transportation in today's society, the number of elderly patients with fractures is increasing day by day, and fractures also occur in young and middle-aged people. Fractures are generally caused by sudden external forces, such as falls, falls from heights, and traffic accidents, and some patients have fractures due to osteoporosis and long-term accumulated strain. [0003] If the fracture is very serious, such as comminuted fracture, spiral fracture, compression fracture, and burst fracture, bone fragments often move during the surgical reduction process, resulting...

AI Technical Summary

Problems solved by technology

If the fracture gap is larger than 3 mm or even larger, it will lead to slow growth of fibrous connection and original callus at the fracture site, or even no callus, which will affect the recovery of the fracture

[0004] If the large fracture gap can be filled with bone cement and other fillers during the surgical reduction process, the closure and recovery of the fracture gap can be promoted, but filling before the internal fixation of the fracture site will affect the internal fixation operation. And the filler cannot be set well; and after the fracture is internally fixed, the filler cannot be implanted into the internal bone crack

Therefore, there is currently no method or instrument that can fill and close the remaining bone cracks after fracture reduction.

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