Anterior cervical vertebrae single corpus vertebrae Subtotal ablation physiological inner fixing device

Abstract

The invention discloses an anterior cervical subtotal subcorpectomy physiological fixation device, which comprises two retaining brackets connected with cervical vertebra, the bottom of retaining bracket is equipped with ball socket; it also comprises one adjustable device, the two ends of adjustable device are connected with bulb pole respectively, the end of bulb pole is provided with ball socket moveable junction, the outer part of adjustable device is equipped with lantern ring, which is connected with two anterior pedicle of vertebral arch screws, the end part of pedicle of vertebral arch screws is provided with rear pedicle of vertebral arch screws. The fixation device can be fixed subtotal subcorpectomy vertebra through pedicle of vertebral arch screw, the retaining brackets can befixed with vertebral on the upper and lower part, which ensures the flexion and extension, rotary motion and axial motion between subtotal subcorpectomy vertebra and near vertebral, and thus reduces compensation motion for near vertebra and prevents vertebra degeneration.

Description

technical field [0001] The invention relates to an orthopedic medical instrument, in particular to a device for fixing a subtotal cervical vertebrae. Background technique [0002] At present, fusion technology is adopted after anterior cervical subtotal corpectomy and adjacent intervertebral space decompression, that is, bone graft fusion is performed between the subtotal resection vertebral body and the adjacent upper and lower vertebral bodies, although this technology can achieve static Stable, but it will also lead to the limitation of the activity of the fused cervical spine, which will lead to abnormal increase in the activity of the adjacent unfused vertebral body, and the abnormal uneven distribution of stress between the vertebral bodies, which will accelerate the degeneration of the intervertebral space. Similar cases There have been a large number of clinical reports. Contents of the invention [0003] The technical problem to be solved by the present invention...

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Problems solved by technology

[0002] At present, fusion technology is adopted after anterior cervical subtotal corpectomy and adjacent intervertebral space decompression, that is, bone graft fusion is performed between the subtotal resection vertebral body and the adjacent upper and lower vertebral bodies, although this technology can achieve static Stable, but it will also lead to the limitation of the activity of the fused cervical spine, which will lead to abnormal increase in the activity of the adjacent unfused vertebral body, and the abnormal uneven distribution of stress between the vertebral bodies, which will accelerate the degeneration of the intervertebral space. Similar cases There have been a large number of clinical reports

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