Spinal Surgery AR Imaging With Posture-Aligned 3D Insertion Paths
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Solution Overview
Problem
Conventional minimally invasive spinal surgery relies heavily on limited internal body structure information and the surgeon's tactile sense, leading to risks of damaging critical organs and incomplete lesion removal due to discrepancies between the 3D model and the actual patient state, especially when using augmented reality devices.
Innovation Solution
A method involving 3D model generation, adjustment, and optimal insertion path computation using multiple medical imaging devices, displayed on an augmented reality device to align with the patient's actual posture, including features like layer selection, reference point adjustment, and surgical instrument modeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a 3D model is used for surgical guidance, then surgical precision is improved, but discrepancies between the 3D model and actual patient state cause reliability to deteriorate
Solution Approach 1:
The system performs preliminary registration of anatomical landmarks and adjusts the 3D model to match the patient's actual anatomical state before surgery begins. This pre-alignment ensures that the virtual 3D model accurately represents the real patient anatomy, resolving the discrepancy issue while maintaining surgical precision benefits
Solution Approach 2:
The system continuously compares the planned surgical path on the 3D model with real-time surgical actuals and provides feedback to update the model. This closed-loop feedback mechanism ensures the 3D model remains synchronized with the actual patient state throughout the procedure, eliminating accuracy discrepancies
2Loss of information
If augmented reality devices are used for surgical visualization, then information completeness is improved, but device complexity increases
Solution Approach 1:
The augmented reality device integrates multiple functions including 3D model display, surgical path guidance, real-time imaging integration, and anatomical landmark registration into a single system. This multi-functionality provides complete surgical information while managing complexity through integration rather than separate systems
Solution Approach 2:
The system merges the 3D model, real-time imaging data, surgical instrument tracking, and anatomical references into a unified augmented reality display. This consolidation provides comprehensive surgical information through a single integrated interface, improving information completeness without proportionally increasing complexity
3Ease of operation
If surgical instruments are guided using tactile sense alone, then operation simplicity is maintained, but surgical precision deteriorates
Solution Approach 1:
The system introduces an intermediary augmented reality display that shows the surgical instrument's position and planned path overlaid on the patient's anatomy. This intermediary visual guidance system maintains the simplicity of manual instrument manipulation while dramatically improving precision through real-time positional feedback and path guidance
Data Source
AI summary
Provided is a spinal surgery image-providing method and a computer-readable recording medium storing a program for executing the method. The image-providing method includes: a step of storing a three-dimensional model generated using first image data acquired by a first medical imaging device when a patient is in a first posture; a step of storing second image data acquired by a second medical imaging device when the patient is in a second posture; a three-dimensional model adjustment step of adjusting the three-dimensional model using the second image data; an insertion path computation step of computing an optimal surgical instrument insertion path toward a surgical target; and an insertion path display step of displaying the optimal surgical instrument insertion path on a screen of an augmented reality device.