Twelve-Lead ECG Synthesis via Three Differential Electrodes
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Solution Overview
Problem
Conventional twelve-lead electrocardiogram systems require ten electrodes, making long-term bedside monitoring impractical due to mobility restrictions and difficulty in maintaining electrode attachment.
Innovation Solution
A method and system using three differential electrode pairs to generate twelve-lead ECG signals, with a signal processor applying a dynamic system model to synthesize lead signals, allowing for accurate long-term monitoring without mobility restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ten electrodes are used in conventional twelve-lead ECG system, then measurement precision is improved, but device complexity and ease of operation deteriorate due to difficulty in mounting and maintaining electrode attachment
Solution Approach 1:
The patent uses three differential leads to capture essential cardiac electrical activity, then synthesizes virtual representations of the remaining leads through signal processing algorithms. This copying approach recreates the information content of ten-electrode system using only three physical electrodes, maintaining measurement precision while dramatically simplifying electrode attachment and long-term monitoring.
2Measurement precision
If ten electrodes are used in conventional twelve-lead ECG system, then measurement precision is improved, but device complexity worsens due to large number of electrodes required
Solution Approach 1:
The patent extracts the essential cardiac electrical information contained in ten-electrode measurements by using only three strategically positioned differential leads. Through mathematical decomposition and signal synthesis, the system separates and reconstructs the necessary cardiac vectors from minimal electrode inputs, eliminating the need for seven electrodes while preserving diagnostic accuracy.
Solution Approach 2:
The three differential leads serve multiple functions simultaneously: they directly provide three lead signals and serve as the foundation for synthesizing nine additional virtual leads. This multi-functionality allows a single simplified electrode configuration to replace the traditional ten-electrode arrangement, reducing device complexity while maintaining comprehensive cardiac monitoring capability.
3Loss of information
If ten electrodes are used in conventional twelve-lead ECG system, then complete lead information is obtained, but ease of operation worsens due to mobility restrictions for long-term monitoring
Solution Approach 1:
The system creates virtual copies of leads that would require additional physical electrodes, allowing complete twelve-lead information to be obtained from only three electrodes. This enables patients to move freely during long-term monitoring while the signal processing algorithm continuously generates accurate representations of all twelve leads, preserving information completeness without restricting mobility.
4Ease of operation
If three differential leads are used instead of ten electrodes, then ease of operation and patient mobility are improved, but measurement precision may deteriorate
Solution Approach 1:
The patent transforms the three differential lead signals through mathematical operations and signal processing to generate twelve synthesized leads. By changing the parameter representation from three physical measurements to twelve virtual lead configurations, the system maintains measurement precision across all leads while using only three electrodes, thus preserving ECG signal accuracy while improving ease of operation and patient mobility.
Data Source
AI summary
In a method and system for generating twelve-lead ECG signals based on three differential voltages, each of which is defined as a potential difference between two myoelectric signals sensed respectively by two corresponding electrodes that cooperatively constitute a corresponding differential electrode pair and that are disposed on a user's chest at predetermined specific locations, a signal processor generates the twelve-lead ECG signals using a pre-established dynamic system model that is associated with the specific locations of the electrodes on the user's chest and that is configured with temporal and spatial correlations among twelve leads of an ECG.