A kind of cervical vertebra dynamic fixation steel plate

Abstract

The invention discloses a dynamic cervical vertebra fixing steel plate, and relates to a device for treating bones or joints, in particular to a dynamic fixing steel plate used for cervical vertebra internal fixation. The dynamic cervical vertebra fixing steel plate comprises an upper locking steel plate, a middle locking steel plate and a lower locking steel plate; the two sides of the middle locking steel plate are each connected with a dynamic connecting plate to form two pendulum joint mechanisms; sliding grooves are formed in the inner side of the upper locking steel plate and the inner side of the lower locking steel plate; the dynamic connecting plates are in sliding fit with the sliding grooves to form two straight line sliding groove mechanisms; and the middle locking steel plate is dynamically connected with the upper locking steel plate and the lower locking steel plate through the pendulum joint mechanisms and the straight line sliding groove mechanisms on the two sides to form the stretchable and laterally-bendable dynamic cervical vertebra fixing steel plate. The problem that in an existing cervical vertebra steel plate, part or all vertebral body motion functions are lost after an operation is performed is solved; the activity of a target vertebral body section can be retained to the maximum degree; the stress concentration effect of adjacent vertebral body sections can be effectively reduced; and the long-term operative complications of the adjacent vertebral body sections is accordingly reduced.

Description

Technical field [0001] The invention relates to a device for treating bones or joints, in particular to a dynamic fixation steel plate for internal fixation of the cervical spine. Background technique [0002] Cervical spondylosis has become one of the most common diseases in spinal surgery. Anterior cervical plate fusion surgery is often used in cases that require anterior decompression and reconstruction of the middle and lower cervical spine, such as: acute trauma, post-traumatic deformity, tumor, ossification of the posterior longitudinal ligament Symptoms and multi-segment cervical spondylosis and cervical instability. Chinese utility model patent "anterior cervical pedicle screw internal fixation plate" (Chinese utility model patent number: ZL201220536791.6 authorization announcement number: CN202843769U) discloses an anterior cervical pedicle screw internal fixation plate, which is a surgical instrument The spine positioner or stabilizer in the technical field of the spin...

AI Technical Summary

Problems solved by technology

However, the fatigue test and clinical test of this new internal fixation system need to be further verified.

[0004] All cervical spine dynamic plates that have been put into clinical use have the defect of loss of vertebral body mobility after surgery, and none of the products can solve the problem of complete loss of motion function of vertebral body lateral flexion after surgery

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