Internal fixation device for upper anterior cervical fusion

Abstract

The invention relates to the technical field of internal fixation apparatuses for upper anterior cervical bone graft fusion, in particular to an internal fixation device for upper anterior cervical fusion. The internal fixation device comprises a body (1), a top wing (2) and a tail wing (3) and is characterized in that the body (1) with the upper portion at one end and the lower portion at the other end is a tubular part with four hollowed-out meshed walls, the cross section of the upper portion of the body (1) is oval while the cross section of the lower portion of the body (1) is circular, horizontal heights of two thin side walls of the upper portion of the body (1) are larger than the horizontal height of the middle portion, the top wing (2) is arranged on one side of the upper portion of the body (1), the tail wing (3) is arranged on one side of the lower portion of the body (1), and each of the top wing (2) and the tail wing (3) is provided with at least two through holes. The internal fixation device for upper anterior cervical fusion is simple in structure and novel in design and aims at the problem of anterior cervical reconstruction after lesionectomy for atlantoaxial ventral lesions or upper cervical ventral lesions with involvement of lower cervical long sections.

Description

technical field [0001] The invention relates to the technical field of anterior upper cervical fusion internal fixation device, in particular to an internal fixation device for upper cervical anterior fusion. Background technique [0002] In recent years, with the continuous development of clinical diagnosis and treatment technology, lesions in the craniocervical junction and the ventral side of the atlantoaxial spine have gradually been recognized by more patients and medical staff. Fractures of the odontoid process, tumors on the ventral side of the upper cervical spine, tuberculosis, aneurysms in the lower segment of the basilar artery and the junction of the vertebral artery and the basilar artery, etc. are often trapped in the cranium due to the odontoid process, or the ventral medulla oblongata-cervical cord is compressed by the ventral upper cervical vertebral lesion It can cause clinical manifestations such as movement disorders in patients. [0003] The transoropha...

AI Technical Summary

Problems solved by technology

In the past, due to the specificity of the anatomy of the atlantoaxial spine, it was difficult to directly fuse the upper cervical spine through an anterior approach, and there was no suitable fusion and internal fixator to choose. Axial or cervical occipital bone graft fusion and internal fixation are used for fusion and fixation, but for atlantoaxial anterior plate internal fixation, it is not possible to reconstruct the vertebral body and fusion fixation at the same time for the multi-segmental lesion resection on the ventral side of the upper cervical spine. Posterior fixation, for multi-segment lesion resection, the tension of the rear internal fixation structure may be too large, and the possibility of internal fixation loosening and fracture increases

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