Positioning guide plate and manufacturing method thereof, and positioning guide plate model generation method and system

Abstract

The invention provides a positioning guide plate, a manufacturing method thereof, a positioning guide plate model generation method and a positioning guide plate model generation system. The positioning guide plate model generation method and system are all based on a broken bone model after virtual reduction of a fractured bone of a fracture nail to be driven into a patient, and the method comprises the following steps: extracting a guide plate base surface from the model surface of the broken bone model; copying all the space points on the guide plate base surface and translating all the copied space points for a preset distance by keeping the original topological structure to form a guide plate base top surface; carrying out triangular patch fitting on the boundary points of the guide plate base surface and the boundary points of the guide plate base top surface to obtain an initially-formed guide plate model; constructing a guider three-dimensional model; rotating and / or translating the guider three-dimensional model on the initially-formed guide plate model by adopting a human-computer interaction mode to obtain a target guider three-dimensional model; and carrying out difference set Boolean operation on the target guider three-dimensional model and the initially-formed guide plate model to obtain a Boolean operation result, namely the positioning guide plate model to be generated. The method and system are used for assisting surgical positioning of the fracture nail.

Description

technical field [0001] The invention relates to the field of computer-aided technology, in particular to a positioning guide plate and its manufacturing method, a positioning guide plate model generation method and system, mainly used for assisting the surgical positioning of fracture nails. Background technique [0002] Fracture usually means that the continuity of bone structure is completely or partially broken due to external force or internal injury. It has become a common orthopedic disease. At present, the main treatment method is the combination of reduction and fixation. There will be many problems that are difficult to solve. Since there is no advanced auxiliary orthopedic technology, doctors can only rely on experience to perform operations, and the risks of such operations are relatively high. [0003] Computer-aided orthopedic technology refers to the organic combination of advanced treatment equipment and surgeon's diagnosis, and the ability to make full use of...

AI Technical Summary

Problems solved by technology

[0006] As for how to make positioning guides, most of the current productions use foreign mimics software, use voxels to increase the original bone model, and then subtract the original bone model from the enlarged model to generate the guide plate, but this is limited to foreign software It is impossible to precisely control the generated position of the guide plate, and the generated guide plate cannot completely fit the bone model, and the operation steps of the software are quite cumbersome, and it is difficult for some non-professionals to operate

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