Individualized 3D printing method for thoracolumbar spine lateral approach interbody fusion cage

Abstract

The invention relates to the technical field of biomedicine, in particular to an individualized 3D printing method for a thoracolumbar spine lateral approach interbody fusion cage. The individualized3D printing method comprises the following steps that (1) three-dimensional CT scanning is conducted on a target part of a spine of a patient; and (2) three-dimensional CT scanning data are input intoa data workstation, corresponding intervertebral space three-dimensional stereoscopic structures completely matched with faces of upper and lower endplates of the target part of the spine of the patient are simulated, that is, the faces, the heights and the angles of the upper and lower endplates of the cage are determined. After being placed in the intervertebral space of the patient, the 3D printing interbody fusion cage is completely matched with or attached to the thoracolumbar spine intervertebral disc and the upper and lower endplates of the patient in a face-to-face mode, face-to-facesupporting between the cage and the end plates can be provided, thus damage and collapse of the end plates are avoided, sinking of the cage is avoided, stability is better, interbody fusion is facilitated accordingly, and the comfortable degree of the patient is increased.

Description

technical field [0001] The invention relates to the field of biomedical technology, in particular to a method for individualized 3D printing of a thoracolumbar lateral approach intervertebral fusion device. Background technique [0002] At present, spinal degenerative diseases have become a common and frequently-occurring disease that plagues human beings in today's society. Degenerative spondylosis leads to intervertebral disc herniation, vertebral segmental instability, and nerve root compression symptoms caused by osteophyte formation, which seriously affects the work and life of patients. Intervertebral fusion combined with internal fixation is an effective means of modern clinical treatment of such diseases. In intervertebral fusion, the diseased intervertebral disc is often removed, and the upper and lower vertebrae are fused with bone grafts. After the upper and lower segments achieve osseointegration, the spinal instability and pain caused by the disease can be reli...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing intervertebral fusion devices used in the lateral approach (or lateral anterior approach) are mass-produced by the manufacturer according to a fixed model, and their size and shape are fixed like a cuboid structure; while the human thoracolumbar intervertebral disc And the three-dimensional shape of the upper and lower endplates is not completely fixed and unified; therefore, the existing fusion cage cannot fit well with the surface of the endplate after placement, and can only provide "line" or "point" support, but not Provide the support of the entire cage to the "face" of the endplate, so that local endplate damage, collapse and sinking of the cage are prone to occur, and the stability is poor, which affects intervertebral fusion