Pulmonary Vein Potential Detection Using dv/dt and RMSD Thresholds

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Solution Overview

Problem

Existing methods for detecting atrial fibrillation using catheters inserted into pulmonary veins lack effective techniques to accurately identify pulmonary vein potentials, which are crucial for guiding ablation procedures.

Innovation Solution

The method involves acquiring pulmonary vein potentials from a catheter, calculating the first derivative (dv/dt) of the signals, determining a minimum threshold using root mean square deviation (RMSD), and generating visual markers to indicate the presence of PV potentials, allowing for real-time detection and guidance during ablation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If catheters are inserted into pulmonary veins to acquire voltage signals, then atrial fibrillation detection capability is improved, but the ability to accurately identify pulmonary vein potentials remains insufficient

Engineering Contradiction:

Improveatrial fibrillation detection capabilityVSAvoidpulmonary vein potential identification accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The system performs preliminary calculations of the first derivative (dv/dt) of the acquired voltage signals and determines minimum thresholds using root mean square deviation (RMSD) before actual ablation procedures. This preliminary processing prepares the detection system in advance, enabling accurate identification of pulmonary vein potentials when ablation is performed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces manual visual inspection of voltage signals with automated computational methods. The system automatically calculates dv/dt values, determines thresholds using RMSD, and generates visual markers to indicate PV potential presence, substituting mechanical/manual analysis with electronic signal processing and automated detection algorithms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If automated detection methods are implemented, then detection accuracy is improved, but system complexity increases

Engineering Contradiction:

ImprovePV potential detection accuracyVSAvoidsignal processing system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The signal processing system is divided into distinct functional modules: a signal acquisition module that captures voltage signals from catheters, a calculation module that computes the first derivative (dv/dt), a threshold determination module that calculates RMSD to establish minimum thresholds, and a marker generation module that creates visual indicators. This segmentation allows each module to perform a specific function, improving detection accuracy while managing system complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12514634B1Methods and systems for analysis of pulmonary vein potentials

Publication Date: 2026.01.06 ANUMANA INC

AI summary

A method and system is disclosed for the detection of pulmonary vein potentials when mapping a heart. The method comprises acquiring a voltage signal from a catheter inserted into a heart and performing real time beat detection to isolate the beats in said signal. Next a minimum threshold is computed to indicate the presence of a pulmonary vein potential. The voltage signal may be marked to indicate the presence of a pulmonary vein potential based on the minimum threshold.