Universal omni-posterior-double lateral mass bridging board for cervical vertebra

Abstract

The invention discloses a universal omni-posterior-double lateral mass bridging board for cervical vertebra. The bridging board is in an arched whole made of a narrow and long metal plate, and comprises two lateral mass fixing plates, two vertebral lamina fixing plates, a spinous platform fixing plate and a bone grafting fixing plate. The bridging board is mainly used for reconstructing a vertebral canal structure after posterior expansive laminoplasty of cervical spine, can simultaneously fulfill fixation of open door side and hinge side in the expansive laminoplasty, the length of each fixing plate and angles among the fixing plates are in accordance with the characteristics of human cervical vertebra dissection; the bridging board has strong biological attachment and can furthest resist posterior pressure, so that the expansive laminoplasty failure caused by crack reclosing at the vertebral open door side and hinge fracture is avoided; the whole structure adapts to the posterior anatomy structure of human cervical vertebra and the characteristics of biological mechanics; and the bridging board can be pre-bent properly in use. The universal omni-posterior-double lateral mass bridging board for cervical vertebra is expected to replace the conventional posterior cervical single open door fixing plate to become a clinical standard postoperative physiology and stability reconstructing method after the posterior cervical single open door expansive laminoplasty.

Description

technical field [0001] The invention relates to a medical auxiliary device, especially for the failure of posterior single-door laminoplasty for patients with cervical spinal canal stenosis. Lamina - bridging plates of bilateral masses. Background technique [0002] For cervical spinal stenosis, a good surgical effect depends on the correct selection of surgical methods and adequate decompression of the spinal cord. Cervical laminoplasty is one of the most effective methods that can treat cervical spinal stenosis and preserve the lamina intact, especially single-door laminoplasty, which is widely used clinically because of its many advantages. For congenital developmental cervical spinal stenosis, multi-segment ossification of the posterior longitudinal ligament, and no obvious effect of anterior surgical decompression, the surgical treatment is mostly performed by cervical posterior single-door laminoplasty, and the door needs to be opened during the operation. The latera...

AI Technical Summary

Problems solved by technology

At present, the common fixation and reconstruction materials in clinical practice are mainly cervical single-door fixation plate, but it is only fixed on the door-opening side, and the lamina and lateral mass on the side of the door axis are not fixed at the same time. Physiological posterior cervical spinal canal reconstruction is formed, so its compression resistance is poor, and it cannot effectively disperse the pressure from the back of the cervical spine. It may happen that the door opens and then closes after laminoplasty under a certain physiological pressure load, resulting in surgical failure.

In addition, the currently used posterior fixation plate has cumbersome surgical procedures and is not suitable for fixing the door-opening side and the door-axis side at the same time.

[0003] According to the data retrieval conducted by the applicant, so far, none of the existing fixed plates can maximize the stability of the spinal canal after cervical posterior single-door open-door laminoplasty reconstruction, and the existing fixed plates are easy to use And the versatility is not ideal, and the final surgical effect is difficult to achieve the physiological reconstruction of the cervical posterior column

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