Intraoperative Instrument Tracking With AR Overlays for MIS Visualization
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Solution Overview
Problem
Intraoperative visualization systems often lack seamless integration of pertinent medical information, leading to increased cognitive load, procedural interruptions, and error risk during minimally invasive surgeries due to the use of multiple display systems and cumbersome head-mounted displays.
Innovation Solution
A processor-implemented method for blending live video streams with graphic enhancements, including instrument pose, activation state, and anatomical structure proximity, using alpha blending and augmented reality to overlay energy device information, providing real-time visual and auditory feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple display screens are used to show different medical information, then information availability is improved, but cognitive load and procedural interruptions increase
Solution Approach 1:
The patent merges multiple information streams (video, instrument state, anatomical structures, warnings) into a single integrated display. The system combines visual feedback from cameras with graphical overlays of instrument poses, anatomical models, and real-time parameters into one unified interface, eliminating the need for multiple separate screens and reducing cognitive load by presenting all critical information in one location.
Solution Approach 2:
The patent introduces an intermediary processing layer that receives data from multiple sources (video streams, instrument sensors, anatomical models) and synthesizes them into a unified visual representation. This intermediary system acts as a mediator between raw data from different subsystems and the surgeon's decision-making process, filtering and presenting only relevant information in context.
2Area of moving object
If head mounted displays are used for visualization, then field of view is improved, but ease of use deteriorates due to cumbersome adjustments
Solution Approach 1:
The patent implements self-service functionality through automatic tracking and adaptive display adjustments. The system automatically tracks instrument positions and anatomical structures without requiring manual calibration or adjustment by the user. Head mounted displays automatically adjust to maintain optimal field of view and overlay positioning based on user head movement and surgical context, eliminating cumbersome manual adjustments.
Solution Approach 2:
The patent employs dynamic display adaptation where the visualization system continuously adjusts based on real-time surgical context, instrument poses, and anatomical structures. The display dynamically reconfigures overlays, camera angles, and information prioritization based on the current surgical task, eliminating the need for static manual adjustments and improving ease of use while maintaining optimal field of view.
3Reliability
If real-time instrument tracking is implemented, then safety is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by using a single integrated tracking system to simultaneously monitor multiple instruments, anatomical structures, and surgical parameters. Rather than separate tracking systems for each function, the system universally tracks all relevant elements using unified algorithms and data structures, reducing overall system complexity while maintaining comprehensive safety monitoring.
Solution Approach 2:
The patent employs feedback mechanisms where instrument tracking data is continuously fed back to the display system and surgical workflow. Real-time position information, anatomical proximity alerts, and instrument state feedback create closed-loop control that enhances safety without requiring complex additional hardware. The feedback drives intelligent overlay positioning and warning generation based on current surgical context.
Data Source
AI summary
Systems and methods for intraoperative tracking and visualization are disclosed. A current minimally invasive surgical (MIS) instrument pose may be determined based on a live intraoperative input video stream comprising a current image frame captured by a MIS camera. In addition, an instrument activation state and at least one parameter value associated with the instrument may also be determined. Intraoperative graphic visualization enhancements may be determined based on the activation state of the instrument, and/or a comparison of parameter values with corresponding parametric thresholds. The visualization enhancements may be applied to a current graphics frame. The current graphics frame may also include visualization enhancements related to proximate anatomical structures with proximity determined from the instrument pose and an anatomical model. The current graphics frame may be blended with the current input image frame to obtain an output blended image frame, which may form part of an output video stream.