Pacing Pulse Discrimination Through Differential and Sum ECG Signals
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Solution Overview
Problem
Existing pulse discrimination devices struggle to accurately distinguish pacing pulses from noise in electrical signals due to unreliable detection methods, particularly when using a single electrode position, leading to erroneous noise detection as pacing pulses.
Innovation Solution
A pulse discrimination device that receives electrical signals from multiple positions on the body, utilizing differential and sum processors to calculate differences and sums, and a pulse discrimination unit to accurately identify pacing pulses based on these calculations, along with pulse width analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electrode position is used to detect pacing pulses, then the device complexity is reduced, but the measurement precision of pacing pulse detection deteriorates
Solution Approach 1:
The detection system is segmented into multiple electrode portions (at least three electrodes) positioned at different locations. Each electrode independently detects electrical signals, and the pulse discrimination device processes signals from multiple electrodes to identify pacing pulses, thereby improving detection accuracy without requiring a single complex electrode structure
Solution Approach 2:
The detection approach transitions from a single-point detection to multi-dimensional detection by positioning electrodes at different spatial locations (different directions relative to the pacemaker). This spatial dimensionality allows the system to capture pacing pulses from multiple angles, improving reliability while maintaining simple electrode designs
2Device complexity
If noise discrimination is performed based only on amplitude, then the device complexity is reduced, but the reliability of pacing pulse discrimination deteriorates
Solution Approach 1:
The discrimination method changes from relying solely on amplitude parameter to incorporating multiple parameters including pulse width (duration), amplitude, and temporal characteristics. The pulse discrimination device measures both the amplitude and the width of detected pulses, using these combined parameters to reliably distinguish pacing pulses from noise with higher accuracy
Data Source
AI summary
A pulse discrimination device is configured to receive electrical signals from a plurality of positions of a living body to which a pacing device for outputting a pacing pulse to cause a heart to beat is attached, and is configured to discriminate the pacing pulse included in the electrical signals. The pulse discrimination device includes a differential processor configured to calculate a difference of the electrical signals received from the plurality of positions, a sum processor configured to calculate a sum of the electrical signals received from the plurality of positions, and a pulse discrimination unit configured to discriminate the pacing pulse included in the electrical signals based on the difference obtained by the differential processor and the sum obtained by the sum processor.