Children epiphyseal plate injury fixing device

Abstract

The invention relates to the technical field of children epiphyseal plates, in particular to a children epiphyseal plate injury fixing device. A pressing plate is formed by fixing and connecting bottom edges of two isosceles triangular plates, the outer triangular plates of the pressing plates abut against each other to form a cone, a piston rod is connected to the inner cavity of a smooth nail in an inserted mode, one end of the piston rod penetrates through a limiting plate to reach the exterior of the smooth nail, the other end of the piston rod is fixedly connected to a first connecting rod corresponding to the pressing plate, the end, far from the piston rod, of a top plate is connected to multiple protrusions, the end, next to the piston rod, of the top plate is movably connected to a protruded wheel, the side, far from a protruded block, of the protruded wheel is connected to multiple teeth equidistantly, a bearing is connected to an inner ring of the protruded wheel in an inserted mode, a fixing rod fixed at the inner wall of the smooth nail is connected to an inner ring of the bearing in an inserted mode, the piston rod is connected to racks corresponding to the teeth, and the racks corresponding to the teeth are located at the left side of the teeth. The children epiphyseal plate injury fixing device has the advantages of being simple in structure, convenient to mount and dismount, firm in structure and the like.

Description

technical field [0001] The invention relates to the technical field of children's epiphyseal plate, in particular to a device for fixing a child's epiphyseal plate injury. Background technique [0002] Physeal plate injury is a unique form of injury in children. Due to the particularity of the epiphyseal plate in children, ordinary screws cannot pass through the epiphyseal plate, and plate fixation cannot cross the epiphyseal plate, which will cause epiphyseal block. Smooth Kirschner wires can only be used for fixation. There are technical references Figure 9-10 , is to use smooth Kirschner wires to pass directly through the epiphyseal plate for fixation, but due to the active nature of children, it is easy to cause dislocation of the Kirschner wires, which reduces the speed of the repair of the epiphyseal plate, and in severe cases causes the dislocation of the repair of the epiphyseal plate, which affects the child's life. , a bone fixation device is disclosed in PCT / US20...

AI Technical Summary

Problems solved by technology

[0002] Physeal plate injury is a unique form of injury in children. Due to the particularity of the epiphyseal plate in children, ordinary screws cannot pass through the epiphyseal plate, and plate fixation cannot cross the epiphyseal plate, which will cause epiphyseal block. Smooth Kirschner wires can only be used for fixation. There are technical references Figure 9-10 , is to use smooth Kirschner wires to pass directly through the epiphyseal plate for fixation, but due to the active nature of children, it is easy to cause dislocation of the Kirschner wires, which reduces the speed of the repair of the epiphyseal plate, and in severe cases causes the dislocation of the repair of the epiphyseal plate, which affects the child's life. , a bone fixation device is disclosed in PCT / US2005 / 020157, which includes a plurality of approximately spherical screw receiving assemblies with screws pierced thereon, and a connecting assembly extends from each screw receiving assembly; a connecting arm, It does not extend along the long axis between the screw containing components, but extends along the side of the long axis. The screw containing component is connected to the connecting arm through the connecting component. This structure has many defects: many parts, complicated structure, and assembly needs Multiple steps, in addition, can not only twist the device around the long axis, and this twist is usually required; CN101028209A discloses an orthopedic external fixation device and its use method, the device includes a fixation ring, a support rod, a nut, a gram The needle and needle-piercing jig pass through the bone through the Kirschner wire to reach the outside of the skin, and then fix the Kirschner wire through two fixing rings and multiple support rods. The part brings great burden, the structure is complex, the assembly requires multiple steps, and the movement is hindered

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