Cervical vertebra anterior C2.3 eccentric placement nail plate fixing system

Abstract

The invention relates to a cervical vertebra anterior C2.3 eccentric placement nail plate fixing system, and comprises a fixing plate which is in the shape of 'L' and the inner side edge of the fixingplate is thinner than the outer side edge of the fixing plate. The fixing plate is provided with a first group of nail holes and a second group of nail holes; the first group of nail holes is composed of three circular holes, and the three holes are longitudinally arranged along the longitudinal direction in the shape of the ''L''; the second group of nail holes are arranged in the shape of a triangle, and the inner side edge transition part is in an inclined arc shape. The first group of nail holes are inclined holes, and the axis of the first group of nail holes is inclined towards the direction of the inner side edge of the top end of the fixed plate; and the second group of nail holes are inclined holes, and the axes are inclined towards the inner side edge direction.

Description

technical field [0001] The invention belongs to the technical field of orthopedic surgery medical instruments in clinical medicine, and in particular relates to a nail-plate fixation system with eccentrically placed C2 and C3 in the anterior cervical spine. Background technique [0002] The anatomical structure of the front of the cervical spine is relatively complex, and there are many important blood vessels, nerves, and organs. During the exposure process of the anterior cervical spine surgery, it is necessary to carefully identify and protect important structures, and strive to achieve clear exposure with minimal tissue damage. Among them, the structure of C2 is particularly special: the anterior edge of C2 gradually protrudes obliquely downward, and the tissue of the posterior pharyngeal wall in front is thin, and the tolerance to stretching stimulation is poor. [0003] When the conventional anterior cervical screw-plate system is applied to the fusion of C2 and 3, the...

AI Technical Summary

Problems solved by technology

Among them, the structure of C2 is particularly special: the anterior edge of C2 is obliquely downward and gradually protrudes, the anterior posterior pharyngeal wall tissue is thin, and the tolerance to stretching stimulation is poor

[0003] When the conventional anterior cervical screw-plate system is applied to the fusion of C2 and 3, there are some problems: 1) It is difficult to pull the midline structure to the opposite side, and it is difficult to expose, and it is difficult to place screws on the opposite side of the incision, and it is inconvenient to operate. Significantly irritate the throat tissue; 2) The fixation plate is placed in the center, and it is easy to irritate the local structure after implantation, causing discomfort such as foreign body sensation in the throat and dysphagia; 3) The fixation strength is relatively insufficient, and internal fixation caused by screw pullout and cutting are more likely to occur Ineffective; 4) Long-term and vigorous stretching of the midline structure is prone to serious complications such as esophageal fistula

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