Trace Gesture AR Overlay Alignment for Surgical Anatomy
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Solution Overview
Problem
Current surgical planning and navigation systems rely heavily on two-dimensional and three-dimensional medical images, requiring surgeons to mentally construct a 3D model, which can lead to judgment-based decisions lacking precision.
Innovation Solution
The Trace Alignment Engine aligns a virtual overlay of a 3D cloud point representation of a patient's anatomy with the physical surface using a trace interaction, capturing coordinates and mapping them to display a concurrent AR rendering in alignment with the physical anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgical navigation uses 2D medical images requiring mental construction of 3D models, then surgeons can access comprehensive medical data, but surgical precision and objectivity are reduced due to reliance on judgment-based decisions
Solution Approach 1:
The patent transforms 2D medical images into a 3D virtual model that can be overlaid onto the patient's actual anatomy. This dimensionality change allows surgeons to visualize surgical trajectories and anatomical structures in three dimensions, eliminating the need to mentally construct 3D models from 2D slices and significantly improving measurement precision and surgical accuracy.
Solution Approach 2:
The system creates a virtual copy of the patient's anatomy from medical images and overlays it onto the actual patient. This virtual model serves as a precise replica that can be manipulated and measured without affecting the actual patient, providing objective data-driven guidance rather than subjective judgment-based decisions.
2Reliability
If surgical planning relies on surgeon's judgment call based on 2D images, then flexibility in decision-making is maintained, but objectivity and precision are compromised
Solution Approach 1:
The system provides real-time feedback by overlaying the virtual 3D model with the actual patient anatomy during surgery. This allows surgeons to continuously verify their surgical trajectory against the pre-planned virtual model, ensuring objective and precise decisions while maintaining the ability to adapt to actual anatomical variations through the interactive AR interface.
Solution Approach 2:
The augmented reality system acts as an intermediary between the pre-operative 2D medical images and the actual surgical procedure. It translates the static 2D images into a dynamic 3D virtual model that can be overlaid onto the patient, providing objective guidance while preserving surgical flexibility through interactive manipulation of the virtual model.
3Measurement precision
If conventional surgical navigation is used without AR overlay, then system complexity is reduced, but alignment precision between virtual planning and actual anatomy is insufficient
Solution Approach 1:
The patent merges the virtual 3D model with the actual patient anatomy through augmented reality overlay. This combination allows the surgical team to simultaneously view both the pre-operative planning data and the actual anatomical structures in the same field of view, achieving precise alignment and eliminating the need to switch between separate 2D images and the actual patient.
Data Source
AI summary
Various embodiments of an apparatus, methods, systems and computer program products described herein are directed to a Trace Alignment Engine that captures a plurality of coordinates identifying respective locations of a physical surface. Based on the captured plurality of coordinates, the Trace Alignment Engine determines a region(s) of an Augmented Reality (AR) rendering of the physical surface that represents the respective locations. The Trace Alignment Engine determines a mapping of the region of the AR rendering of the physical surface to the respective locations. Based on the mapping, the Trace Alignment Engine displays the AR rendering of the physical surface as a virtual overlay in alignment with the physical surface with concurrent display of a traced line.