A method of 3D printing and repairing implants for bone articular surface reconstruction

Abstract

The invention provides a method for three-dimensional (3D) printing of a restoring implant by bony articular surface reconstruction. First three-dimensional reconstruction of a bone articular model is performed, and then virtual restoration reconstruction of bony articular reconstruction, reversal design of a bone articular defect area restoring implant and 3D printing forming of a bone articular defect restoring implant are performed. Modeling software is utilized to copy a normal side bone articular three-dimensional model to an affected side in a sagittal plane symmetry mode, so as to obtain a complete structure reference model before the occurrence of fracture of the affected side; 3D printing pro-processing software is utilized to support and generate the model, a corresponding forming material and a quick forming process are selected to perform 3D printing, a support structure of the implant is further removed, and finally an individual bone articular reconstruction restoring implant is obtained. The individual reversal design is performed according to the symmetry morphological structure of the human body, the bony articular surface reconstruction defect restoring implant is quickly formed by combination with a 3D printing technology, not only can a bone articular defect restoring reconstruction be greatly improved, but also the design and manufacturing efficiency of the implant is effectively improved, the cost is reduced, and customized design and individual-based treatment are performed.

Description

technical field [0001] The invention relates to the technical field of clinical repair and reconstruction of bone and joint injuries and the research and development of implantable medical devices, in particular to a method for 3D printing and repairing implants for bone joint surface reconstruction. Background technique [0002] Accurate articular surface reconstruction is a key factor in the treatment of intra-articular fractures. At present, the clinical classification of fractures mostly adopts the internationally accepted AO classification method. The AO classification divides intra-articular fractures into type B and type C, in which type B is a partial intra-articular fracture, and type C is a complete intra-articular fracture. Both types of intra-articular fractures involve the articular surface of the bone. The degree of comminution of the articular surfaces can be further divided into subtypes. Regardless of the type, for intra-articular fractures, restoring the ...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method for bone articular surface reconstruction by 3D printing and repairing implants, which solves the problem of individuation and precision that is difficult to achieve in traditional intra-articular fracture repair and reconstruction methods, realizes restoration of articular surface height, personalized anatomical shape matching, and manufactures fast and flexible

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