3D printing method for large-size complex-structure bone tissue

Abstract

The invention provides a 3D printing method for a large-size complex-structure bone tissue. The 3D printing method comprises the following steps that a bone tissue model is established by utilizing modeling software according to the to-be-printed bone tissue; the bone tissue model is divided into at least two sub-models; the at least two sub-models are guided into a printer to be subjected to 3D printing, and a bone tissue structure module is generated; and the bone tissue structures are integrated into the large-size complex-structure bone tissue by adopting a bonding mechanism. The method is particularly suitable for printing large-size complex-structure bone tissue models such as spines, pelvises and long bones of four limbs; the printing success rate of the divided simple structure module is greatly improved; and even if printing of the divided simple module fails, the module can be printed by being adjusted again, the printing effect of other modules is not affected, the printing time and printing materials are saved, and the printing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a 3D printing method of a bone tissue model with a large size and complex structure. Background technique [0002] 3D printing is a kind of additive manufacturing technology that adds and stacks materials layer by layer to manufacture three-dimensional objects. Through computer software modeling, the built three-dimensional objects are divided into layer-by-layer sections. , powder and other materials to print these cross-sections layer by layer, and finally bond the cross-sections of each layer to create a solid structure. [0003] The current 3D printing technology is not only used in industrial manufacturing, but the application of 3D printing in the medical field has become an important trend in the development of digital medicine, especially in the field of orthopedic surgery. By printing the isometric bone tissue model of the patient before the operation, the pre...

AI Technical Summary

Problems solved by technology

However, high-efficiency, high-quality printing of an accurate bone tissue model that is proportional to the patient is often limited by the type of printer, the printing range of the printer, and the volume and structural complexity of the printed bone tissue model. Large-scale bone tissue models such as the spine, pelvis, and limbs have problems that exceed the printing range, printing failures, and repeated printing.

For full spine printing and full pelvis printing, the entire model is often reprinted due to the printing collapse of local complex structures, wasting materials and time

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