3D (three-dimensional) printing technology-based preparation method for personalized bionic vertebral column system

Abstract

The invention relates to a technical method for the reconstruction of a stable vertebral column after a vertebral column resection operation. The method comprises the following steps of performing CT (computed topography) and data acquisition on a personalized vertebral column, outputting CT data in a Dicom format, three-dimensionally calculating and establishing a 3D (three-dimensional) vertebral column model, outputting the 3D vertebral column model to a 3D printer in an STL (standard template library) format, and molding a cellular bionic vertebral column by using a titanium printing material with a melting point of 1,668+/-4 DEG C, wherein the sizes of gaps in the cellular bionic vertebral column are 100 mu m. Compared with the prior art, the method has the advantages that a personalized column body prepared before the operation is directly used for replacing a symptomatic column during the operation, so that the operation time is greatly shortened, bleeding during the operation is reduced, and the incidence rate of various complications during the operation is lowered.

Description

technical field [0001] The invention relates to a technical method for reconstruction of spinal column stability after total vertebroplasty, and is especially suitable for spinal columns applying digital technologies such as CT three-dimensional reconstruction, computer-aided design and manufacturing technology (CAD / CAM) and 3D printing. 3D biomimetic printing method. Background technique [0002] Spinal tuberculosis, tumors, cysts, and trauma often cause severe damage to the spinal vertebral body. Clinically, patients often present with intractable pain at the lesion site, and in severe cases, fractures and paraplegia may even occur. Total vertebral body resection is to remove the diseased vertebrae, relieve pain, and decompress the spinal cord. It is currently the main way to treat severe damage to the spinal vertebral body. Reconstruction of vertebral body stability after total corpectomy is also a very critical issue. For a long time, artificial vertebral body, titaniu...

AI Technical Summary

Problems solved by technology

However, no matter what kind of replacement is adopted, due to the lack of individualized replacement vertebrae, the surgeon needs to measure the diseased segment during the operation to design a replacement vertebrae that meets the patient's individuality, which greatly increases the difficulty of the operation. , increasing the operation time, intraoperative blood loss and even the incidence of various complications

At the same time, titanium mesh and artificial vertebral body must also rely on the mass production of the factory, which has time and space constraints