Lower cervical vertebra anatomical titanium cage

Abstract

The invention belongs to the technical field of medical prosthesis manufacturing, and relates to a lower cervical vertebra anatomical titanium cage which comprises a titanium cage body; the upper endof the titanium cage body is of a dome structure, the lower end of the titanium cage body is of an inclined structure, a net structure is arranged between the dome structure and the inclined structure, and the net structure is connected with the dome structure and the inclined structure; the net structure comprises a first front surface, a first rear surface, a first left side face and a first right side face which are connected, the first front surface and the first rear surface are each of an arc-shaped structure, and the first left side face and the first right side face are each of a planestructure. The upper end of the lower cervical vertebra anatomical titanium cage is designed to be of the dome structure according to cervical vertebra anatomical data measurement results. The lowerend of the lower cervical vertebra anatomical titanium cage is designed to be of the inclined structure, the angle of a cervical vertebra operation segment is simulated, and therefore the contact areabetween the titanium cage and a cervical vertebra end plate is enlarged, the stress concentration phenomenon is reduced, stress is evenly distributed on the surface of the end plate, and the occurrence rate of collapse of the titanium cage is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical prosthesis manufacturing and relates to an anatomical titanium cage for lower cervical vertebrae. Background technique [0002] At present, subtotal cervical corpectomy and decompression combined with titanium cage bone graft fusion is a commonly used operation for the treatment of cervical spondylosis, cervical spinal stenosis, cervical vertebral fracture with spinal cord compression, or old fracture and dislocation with incomplete spinal cord injury. Way. The surgical method adopts the anterior approach to expose the corresponding vertebral bodies and intervertebral discs. The upper and lower vertebral bodies adjacent to the vertebral body to be resected are respectively placed with vertebral body screws, and a vertebral body spreader is placed to stretch the upper and lower vertebral bodies to a certain height. The diseased intervertebral discs at both ends were resected, and most of the verte...

AI Technical Summary

Problems solved by technology

This point contact method causes a large pressure load on the surface of the vertebral body endplate, which is likely to cause structural damage to the vertebral body endplate and cause the titanium cage to penetrate into the vertebral body, causing the titanium cage to collapse

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