Automatic Surgical Navigation View Recentering for Instrument Visibility
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Solution Overview
Problem
Surgical navigation systems often fail to recenter the display on patient anatomy when surgical instruments move near the edge or outside the displayed area, leading to instrument visibility issues.
Innovation Solution
A surgical navigation system that includes a localizer, memory device, and controller to track instrument position, determine movement parameters, and adjust the display to show a corresponding sub-volume of a volumetric image, ensuring continuous visibility of the instrument relative to the patient anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display shows a fixed view of patient anatomy, then the anatomical structure remains stable and recognizable, but the surgical instrument becomes invisible or difficult to see when positioned near the edge or outside the displayed area
Solution Approach 1:
The display transitions from a static fixed view to a dynamic adaptive view that automatically adjusts its position based on instrument location. The system monitors instrument position and dynamically recenters the displayed anatomical volume to maintain optimal visibility of the instrument while preserving anatomical context.
Solution Approach 2:
The system implements a feedback mechanism where the controller continuously monitors instrument position relative to the displayed anatomical volume. When the instrument approaches the edge or exits the visible area, the system detects this condition and automatically triggers a view adjustment to bring the instrument back into the optimal viewing region.
2Reliability
If the display automatically recenters on the instrument, then the instrument remains continuously visible, but the anatomical context and spatial relationships may be lost
Solution Approach 1:
The system applies local quality by adjusting the displayed anatomical volume specifically around the instrument location rather than maintaining a fixed global view. The recentering operation preserves the local anatomical context necessary for surgical precision while ensuring the instrument remains the focal point of visibility.
Data Source
AI summary
A surgical navigation system including an instrument, a localizer, a memory device, a display, and a controller is provided. The memory device contains at least one slice image and a volumetric image defined relative to a known coordinate system. The controller is configured to show a view of the at least one slice image which corresponds to a first sub-volume of the volumetric image on the display, determine a position of the instrument relative to the known coordinate system, determine a movement parameter of the instrument, determine that the view of the first sub-volume should no longer be shown on the display, determine a second sub-volume of the volumetric image based on the position of the instrument relative to the known coordinate system, and show a view of the at least one slice image which corresponds to the second sub-volume of the volumetric image on the display.