Automated Guide Wire Navigation via Actuated Rotation
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Solution Overview
Problem
Current catheter-based procedures for navigating guide wires in cardiovascular interventions face challenges due to poor visualization and depth perception limitations, making it difficult to precisely direct the guide wire to the desired location within the coronary anatomy.
Innovation Solution
A method and system that utilize a catheter procedure system with advance/retract and rotate actuators, controlled by a workstation with imaging feedback, to automatically navigate the guide wire along a predetermined path, adjusting its position until it reaches the desired location by advancing, rotating, and retracting the guide wire based on real-time imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual insertion of guide wire is used, then the procedure can be performed with simple equipment, but the time required to navigate past junction points is excessive and precision is poor
Solution Approach 1:
The patent replaces manual mechanical manipulation of the guide wire with an automated robotic system that uses actuators to advance, retract, and rotate the guide wire. This substitution of mechanical control with automated actuation systems directly addresses the contradiction by reducing procedure time while accepting increased system complexity.
Solution Approach 2:
The system incorporates real-time imaging feedback from fluoroscopy to monitor guide wire position and automatically adjust navigation. This feedback loop enables the automated system to make precise adjustments based on visual information, improving navigation speed and accuracy while managing the complexity through intelligent control algorithms.
2Measurement precision
If fluoroscopy is used for visualization, then the procedure can be performed with standard imaging equipment, but depth perception is insufficient for precise guide wire direction
Solution Approach 1:
The patent introduces an automated control system as an intermediary between the fluoroscopy imaging system and the guide wire manipulation. This intermediary processes the two-dimensional fluoroscopic images and translates them into precise three-dimensional guide wire positioning commands, compensating for the loss of depth perception information in the imaging modality.
Solution Approach 2:
The system replaces manual visual estimation and mechanical manipulation with automated actuation based on imaging feedback. This substitution enables precise positioning by using computational algorithms to interpret imaging data and control guide wire movement, overcoming the limitations of fluoroscopic depth perception.
3Loss of time
If the guide wire is manually manipulated to reach the desired location, then the system remains simple, but the overall procedure time is increased
Solution Approach 1:
The patent replaces manual mechanical manipulation with an automated actuation system that can rapidly advance, retract, and rotate the guide wire. This substitution directly reduces navigation time by eliminating manual operation limitations while accepting the necessary increase in system complexity through integrated actuators and control systems.
Solution Approach 2:
The automated system enables continuous navigation action without the interruptions inherent in manual manipulation. The guide wire can be continuously advanced, adjusted, and repositioned by the automated system, maintaining uninterrupted progress toward the target location and significantly reducing total navigation time.
Data Source
AI summary
A method for navigating a guide wire during a catheter procedure, the method includes changing the direction of a distal portion of the guide wire to advance past a junction in a desired path by rotating a proximal end of the guide wire a predetermined amount while the guide wire is being retracted to a point before the junction and then advancing the distal end of the guide wire past the junction through the desired path.