Personalized porous interbody fusion cage and design method

Abstract

The invention relates to a personalized porous interbody fusion cage. The personalized porous interbody fusion cage includes a porous structure portion and two annular flat plates which are connected vertically. The porous structure portion is acquired by copying or transforming porous micro structure units which are formed by four rods connecting diagonal lines of a cuboid in the length direction, the width direction, and the height direction of the cuboid; a macrostructure of the porous structure portion is personalized, the height of the macrostructure is the height of an intervertebral space, and the shape and size of a bottom surface of the macrostructure are consistent with the shapes and sizes of upper surfaces of centrums. A macrostructure of the annular flat plate is personalized, the bottom surface of the macrostructure is annular, an outer ring is an outer edge of the upper surface of the centrums, and an inner ring is a curve formed by performing equidistance inward contract on the outer edge of the upper surfaces of the centrums according to a specific size. Optimization of a mechanical property can be achieved through a personalized design of macrostructures; the porous micro structure can improve biological effects such as bone conduction and bone induction, good adaption and integration between the interbody fusion cage and adjacent centrums can be achieved in mechanics and biology aspects, and finally, the operation effect can be improved.

Description

technical field [0001] The invention relates to an intervertebral fusion device, in particular to a personalized intervertebral fusion device with a multi-porous microstructure, which belongs to the technical field of orthopedic implants. Background technique [0002] Intervertebral fusion surgery is one of the important methods for the treatment of spinal degenerative diseases. By implanting the intervertebral fusion device and the grafted bone between two adjacent vertebral bodies, the bone grows around the fusion device, and finally gradually forms the whole of the two vertebral bodies and the intervertebral fusion device, which can effectively increase the degeneration Stability of the segment and pain relief. During this process, the intervertebral fusion cage maintains the height of the intervertebral space, restores the support of the spine, increases the capacity of the intervertebral foramen, relieves nerve compression, and prevents the collapse of the intervertebr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a personalized intervertebral fusion device with a porous microstructure, and overcome the defect that the existing intervertebral fusion device cannot well meet clinical needs

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