Myocardial Infarction Localization via Vectorcardiography Gradient Boosting

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Solution Overview

Problem

Current methods for diagnosing myocardial infarction (MI) using electrocardiogram (ECG) signals are limited in their ability to accurately detect and locate MI in clinical practice.

Innovation Solution

The use of vectorcardiography (VCG) signals with gradient boosting to detect and locate MI, as VCG captures spatial and temporal information of the heart's electrical forces, potentially offering more precise localization than traditional ECG methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If 12-lead ECG system is used for MI detection, then comprehensive cardiac information is obtained, but device complexity and difficulty in extracting relevant information increase

Engineering Contradiction:
ImproveMI location informationVSAvoidECG lead system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts only the essential spatial and temporal information needed for MI detection and localization from the complex 12-lead ECG system, using VCG which captures the three-dimensional electrical forces of the heart with fewer leads. This extraction principle reduces device complexity while preserving the critical information needed for accurate MI detection and localization.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transitions from the conventional two-dimensional ECG representation to a three-dimensional vectorcardiographic representation. By visualizing and analyzing cardiac electrical forces in three dimensions (X, Y, Z axes), the system captures spatial propagation and orientation information that is lost in traditional ECG, thereby improving MI location detection without requiring all 12 leads.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If VCG signals with gradient boosting are used, then MI detection precision is improved, but computational complexity increases

Engineering Contradiction:
ImproveMI detection precisionVSAvoidsignal processing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies gradient boosting algorithms to pre-process and extract relevant features from VCG signals before final MI detection and localization. By performing preliminary feature extraction and signal characterization using gradient boosting, the system improves detection precision while reducing the computational burden on subsequent processing stages, as the most informative features are identified and isolated in advance.

Inventive Principle:
Principle #10Preliminary action

3Loss of time

If early MI detection is achieved, then time to treatment is reduced, but detection accuracy requirements increase

Engineering Contradiction:
Improvetime to treatmentVSAvoidMI detection and localization accuracy
Core Design Contradiction:
Loss of timeVSMeasurement precision

Solution Approach 1:

The patent replaces traditional manual ECG interpretation methods with automated VCG-based detection using gradient boosting algorithms. This substitution enables real-time or near-real-time analysis of cardiac signals, providing rapid MI detection and localization with high accuracy. The automated system can process and interpret the three-dimensional electrical forces continuously, reducing the time to treatment while maintaining or improving detection accuracy compared to manual methods.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12201433B2Detection and localization of myocardial infarction using vectorcardiography
Publication Date: 2025.01.21 MEDTRONIC INC
  • US12201433B2 patent drawing
  • US12201433B2 patent drawing
  • US12201433B2 patent drawing

AI summary

A method includes detecting whether one or more myocardial infarctions (MI) has occurred using vectorcardiographic (VCG) signals with gradient boosting, the VCG signals including VCG loops, and determining an MI location using the VCG signals and gradient boosting.