A Dynamic Guidance Method and System for Lumbar Pedicle Screws Based on Augmented Reality

Abstract

This invention relates to the field of intelligent medical technology, and in particular to an augmented reality-based dynamic guidance method and system for lumbar pedicle screw implantation. The method includes the following steps: constructing a physical lumbar spine model of the patient and acquiring cubic markers of the physical lumbar spine model to establish a spatial coordinate system for the lumbar spine; acquiring scanning data of the physical lumbar spine model based on the spatial coordinate system, and reconstructing a three-dimensional lumbar spine model based on the scanning data; obtaining a virtual-to-real registration result of the lumbar spine model by combining the physical lumbar spine model and the three-dimensional lumbar spine model; and obtaining the real-time path trajectory of the lumbar pedicle screw based on the virtual-to-real registration result to achieve dynamic guidance of the lumbar pedicle screw. This invention improves the accuracy and safety of lumbar pedicle screw implantation by achieving dynamic guidance of the screw path through the registration of the physical model and the three-dimensional model, combined with a risk warning mechanism.

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