3D Elongate Device Reference Overlay for Pose-Guided Navigation
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Solution Overview
Problem
Existing image-guided procedures using elongate devices face challenges in navigation due to inadequate visualization of the device's degrees of freedom and difficulty in interpreting action point markers.
Innovation Solution
A system that includes an elongate device, a display system, and processors to determine the pose of the device, generate an elongate device reference corresponding to a reference pose, and display this reference on an image of the workspace, enhancing navigation assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If action point markers are used to indicate target locations, then navigation guidance is provided, but the markers are difficult to visualize and portray with adequate dimensions
Solution Approach 1:
The patent transforms the 2D action point markers into 3D visual representations that include depth information and spatial context. The elongate device reference is displayed with three-dimensional characteristics, allowing operators to perceive the marker's position, orientation, and distance more accurately, thereby resolving the visualization difficulty while maintaining navigation precision.
Solution Approach 2:
The patent introduces an intermediary visual representation system that translates the abstract action point markers into concrete, easily visualizable forms. The elongate device reference acts as an intermediary between the navigation system and the operator, providing intuitive visual feedback about device position and orientation without requiring direct visualization of the actual physical markers.
2Quantity of substance
If images are captured from outside the patient anatomy, then external imaging is achieved, but one or more degrees of freedom of the elongate device are not captured
Solution Approach 1:
The patent implements a feedback mechanism that provides real-time visual information about the elongate device's position, orientation, and degrees of freedom. The system continuously updates the elongate device reference display to reflect the current device state, giving operators feedback about all six degrees of freedom (three positional and three orientational) even though external imaging alone cannot capture all of them.
Solution Approach 2:
The patent adds dimensional information to the imaging system by displaying the elongate device reference in three dimensions with full spatial and orientational data. This virtual 3D representation compensates for the limitations of 2D external imaging by providing complete degrees of freedom information through computational visualization.
3Measurement precision
If traditional action point markers are used, then target indication is provided, but inadequate dimensional feedback is given to aid navigation
Solution Approach 1:
The patent enhances traditional 2D action point markers by adding three-dimensional visual characteristics and dimensional context. The elongate device reference displays not only the target location but also spatial relationships, distances, and orientations in three dimensions, providing comprehensive dimensional feedback that makes navigation significantly easier while maintaining precise target indication.
Data Source
AI summary
System and methods for providing an elongate device reference include a system configured determine a pose, within a workspace, of at least one of a distal portion of an elongate device, or an instrument extendable from the distal portion of the elongate device; acquire a reference pose of the at least one of the distal portion of the elongate device, or the instrument; generate an elongate device reference corresponding to the reference pose; generate an image of the workspace from a perspective associated with the pose; and display, on a display system and on the image of the workspace, the elongate device reference at the reference pose.