A self-reducing anterior anatomical plate for atlantoaxial dislocation

Abstract

The invention discloses an atlantoaxial dislocation anterior anatomy template with an automatic reduction function. The atlantoaxial dislocation anterior anatomy template comprises an atlas part, an axis part and a connecting part. The atlas part is in an arc shape, and symmetrical screw holes are designed in the two sides of the atlas part. The axis part is located below the back of the atlas part and matched with the front structure of the body of the axis, five screw holes are designed in the axis part, four screw holes are symmetrically located in the two sides, and the other screw hole is located in the middle and is an oblong sliding screw hole. The atlas part and the axis part are connected through the connecting part. A screw slides in the sliding screw hole, so that the atlantoaxial dislocation reduction effect is achieved; through screw fixing, the atlantoaxial reduction purpose is achieved, the form of the template is completely matched with the anatomic form of the atlas and the axis, a higher degree of fit is achieved, and the template is attractive in appearance and good in reduction effect.

Description

technical field [0001] The invention belongs to the technical field of medical internal fixation manufacturing, in particular to a self-resetting anterior anatomical plate for atlantoaxial dislocation. Background technique [0002] The upper cervical vertebrae of the human body are the first and second cervical vertebrae, namely the atlantoaxial vertebrae. The incidence rate of atlantoaxial dislocation is low, but because it is adjacent to the medulla oblongata, the odontoid process compresses the spinal cord after dislocation, prone to quadriplegia, and even affects the medulla oblongata respiratory center, which is life-threatening. [0003] At present, when atlantoaxial instability causes neurological symptoms due to compression and stimulation of the upper cervical spinal cord, direct reduction and fusion fixation at the rear is usually selected according to the situation, or relaxation and decompression at the front, resection of the odontoid process, fixation or settin...

AI Technical Summary

Problems solved by technology

However, the application of the steel plate is difficult to operate, and the reset requires an additional expansion device to achieve

The design of the steel plate is a straight steel plate on the atlas, while the front of the atlas has a certain curvature, which makes it impossible for the steel plate to fit completely, and some screws are exposed between the steel plate and the bone; the screw hole design of the axis vertebra is wider , requires larger tissue to reveal

Additional screws and spreaders are required for reduction to achieve the reduction between the atlantoaxial vertebrae, which cannot achieve the purpose of resetting through its own structure

[0006] To sum up, at present, no anatomical steel plate for anterior reduction that fully conforms to the physiological structure of the human body and realizes the reduction of atlantoaxial dislocation through its own structure has not been successfully designed at home and abroad.

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