Cardiac Activation Waveforms for Accurate Mapping
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Solution Overview
Problem
Conventional cardiac mapping systems face challenges in efficiently and accurately interpreting large volumes of electrograms due to complex data sets and electrical artifacts, leading to increased examination time and costs, and often result in misleading maps.
Innovation Solution
The system processes cardiac electrical signals to generate activation waveforms, which include probability values of tissue activation, and uses these waveforms to create more accurate and faithful reconstructions of heart activity, filtering out noise and artifacts, and facilitating automatic classification and diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mapping systems capture and manually inspect electrograms to construct voltage or activation maps, then diagnostic information can be obtained, but examination time and cost increase significantly due to the large volume of data (6,000 to 20,000 intracardiac electrograms)
Solution Approach 1:
The patent replaces manual visual inspection with automated computer-based analysis. The system automatically processes intracardiac electrograms, detects activations, generates activation waveforms, and constructs activation maps without requiring clinician inspection of individual electrograms, thereby resolving the contradiction between diagnostic accuracy and examination time
Solution Approach 2:
The patent creates simplified representations (activation waveforms and activation maps) that copy the essential diagnostic information from complex electrogram data. These condensed visual representations allow rapid assessment while preserving the diagnostic value of the full dataset
2Loss of time
If conventional techniques extract scalar values from electrograms to construct voltage or activation maps, then the need to inspect captured electrograms is reduced, but the complex and useful information in the electrograms is condensed and may become misleading due to electrical artifacts or inappropriate feature selection
Solution Approach 1:
The patent transitions from scalar value extraction to waveform-based analysis by generating activation waveforms that preserve temporal and morphological information. This dimensional expansion maintains the complexity and diagnostic value of the original electrograms while enabling automated processing, preventing information loss and artifact-induced misleading results
Solution Approach 2:
The activation waveform serves as an intermediary representation between the raw electrogram data and the final activation map. This intermediate structure preserves essential diagnostic information while filtering out noise and artifacts, allowing accurate automated analysis without oversimplification
3Quantity of substance
If automatic electro-anatomical mapping processes are used to capture large numbers of intracardiac electrograms, then comprehensive data coverage is achieved, but the data does not lend itself to manual inspection for diagnostic assessment and EGM categorization
Solution Approach 1:
The patent replaces manual data inspection with automated computer-based processing that can handle large volumes of electrogram data. The system automatically categorizes EGMs, detects activations, and generates diagnostic maps, making comprehensive data coverage practical and interpretable without manual intervention
Solution Approach 2:
The patent transforms the data representation from raw electrograms to activation waveforms with extracted parameters (activation times, probabilities). This parameter transformation maintains comprehensive data coverage while presenting information in a format suitable for automated analysis and clinical interpretation
Data Source
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AI summary
Systems and methods for facilitating display of cardiac information based on sensed electrical signals include a processing unit configured to receive a set of electrical signals; receive an indication of a measurement location corresponding to each electrical signal of the set of electrical signals; and generate an activation waveform corresponding to the set of electrical signals. Systems and methods disclosed herein may be configured to generate, based on the activation waveform, a representation of a cardiac electrical signal feature; and facilitate presentation, on a display device, of a cardiac map and the representation of the cardiac electrical signal feature.