3D Electrophysiology Mapping With Automatic Signal Consistency Filtering
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Solution Overview
Problem
Existing electrophysiological mapping techniques face challenges in achieving accurate and efficient mapping with large electrode arrays due to the inability to objectively assess signal quality in real-time, leading to prolonged procedures and reduced accuracy.
Innovation Solution
A medical apparatus with a probe, display screen, and position-tracking system that automatically extracts and displays consistent electrophysiological parameters by computing a measure of consistency, superimposing valid data on a 3D map, and discarding inconsistent data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated mapping with large electrode arrays is used, then productivity is improved, but measurement precision deteriorates due to inability to objectively assess signal quality
Solution Approach 1:
The system performs self-assessment of signal quality by automatically computing consistency measures of electrophysiological parameters across multiple heartbeats. The processor evaluates whether measured parameters satisfy predefined consistency criteria without requiring external physician assessment, enabling the system to self-validate data quality while maintaining high productivity
Solution Approach 2:
The system implements feedback by comparing electrophysiological parameters across multiple heartbeats and computing consistency measures. This feedback mechanism automatically identifies and discards inconsistent data points, ensuring measurement precision is maintained throughout the mapping procedure without reducing productivity
2Measurement precision
If manual physician assessment of signal quality is used, then measurement precision is improved, but productivity deteriorates due to prolonged procedures
Solution Approach 1:
The patent replaces the mechanical system of manual physician assessment with an automated computational system. The processor automatically computes consistency measures of electrophysiological parameters and determines data validity, substituting human judgment with algorithmic evaluation that maintains precision while dramatically improving productivity
3Measurement precision
If electrophysiological parameters are measured over multiple heartbeats, then measurement precision is improved through consistency assessment, but duration of action increases
Solution Approach 1:
The system measures parameters over multiple heartbeats (excessive action) to ensure consistency, but only displays and uses the subset of parameters that satisfy consistency criteria (partial action). This approach maintains high measurement precision through multi-beat assessment while managing overall procedure duration by automatically filtering results
Data Source
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AI summary
A medical apparatus includes a probe configured for insertion into a body of a patient. The probe includes electrodes configured to contact tissue of a region within the body. The apparatus further includes a display screen, a position-tracking system configured to acquire position coordinates of the electrodes within the body, and a processor. The processor is configured to acquire electrophysiological signals from the electrodes while they are held stationary in the region, extract electrophysiological parameters from the signals, compute a measure of consistency of the parameters, and render to the display screen a three-dimensional (3D) map of the tissue while superimposing on the map, responsively to the position coordinates, a visual indication of the extracted parameters at the locations for which the measure of consistency satisfied a consistency criterion, and automatically discarding from the map the parameters for which the measure of consistency did not satisfy the consistency criterion.