Self-stabilizing porous interbody fusion cage and preparation method thereof

Abstract

A self-stabilizing porous interbody fusion cage comprises a columnar main body, a bone grafting window, a clamping part and a porous reticulate body; the columnar main body is of a columnar hollow frame structure; the bone grafting window is arranged in the inner cavity of the columnar main body and is fixedly connected with the columnar main body through the clamping part; and the porous reticulate body is arranged in a space between the columnar main body and the bone grafting window. The preparation method of the self-stabilizing porous interbody fusion cage comprises the steps: firstly, arranging a plurality of fusion cages with gradient specifications; secondly, establishing a spine three-dimensional model, and obtaining parameters; thirdly, carrying out a pre-operation simulation operation, and simulating an evaluation effect; and fourthly, adopting 3D printing processing molding. The method has the advantage that personalized customization is performed according to the medical image data of the target cone segment of a patient. The upper and lower end faces of the columnar main body are respectively matched with the surface contours of the upper and lower end plates of the cone. The self-stabilizing porous interbody fusion cage conforms to the human cervical vertebra vertebral end plate form, enlarges the vertebral contact area, avoids local stress concentration of the contact surface, and reduces the sinking and collapsing risks of the implant.

Description

technical field [0001] The invention relates to the field of spinal surgical medical instruments, in particular to a self-stabilizing porous intervertebral fusion device and a preparation method thereof. Background technique [0002] With the aging of the population, spinal degenerative diseases with neck and shoulder pain and low back pain as the main symptoms are seriously affecting people's work and life. In the treatment of spinal degenerative diseases, the use of intervertebral cages for spinal interbody fusion has been widely used. [0003] Due to the high requirements of the intervertebral fusion in many aspects such as mechanical properties, mechanical strength, corrosion resistance and durability, it has brought certain difficulties to the material selection and structural design of the intervertebral fusion. At present, PEEK is widely used. The intervertebral fusion device has good mechanical properties and can effectively improve the effect of intervertebral bone...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a self-stabilizing multi-hole intervertebral fusion device and its preparation method, which solves the problems of low holding force, poor stability, and problems with the upper and lower vertebral bodies of the existing intervertebral fusion device. Problems where the endplates do not fit perfectly

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