Composite ECG Signal Processing for Subcutaneous IMD Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Implantable medical devices face challenges in interpreting subcutaneous ECG signals due to noise interference and variable amplitudes of R-waves and T-waves, leading to inappropriate sensing and therapy.
Innovation Solution
A computer-implemented method and system that combine multiple ECG signals from subcutaneous implantable medical devices to form composite signals, which can be processed through gain channels, filters, and delays to enhance signal reliability and accuracy, reducing false declarations of cardiac events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple ECG signals are combined to improve signal reliability, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent combines multiple ECG signals from different sensing locations into a composite signal to improve measurement precision. The signal processing circuit receives ECG signals from multiple locations and generates a composite ECG signal by combining these signals, thereby improving the reliability of cardiac event detection while managing the added complexity through systematic processing approaches
2Object-affected harmful factors
If filters are used to block noise, then harmful factors are reduced, but signal processing complexity increases
Solution Approach 1:
The patent applies filters to convert harmful noise interference into beneficial signal enhancement. The signal processing circuit uses filtering techniques to block extrinsic noise from interfering with ECG signal interpretation, transforming the harmful noise into a controlled processing step that improves signal quality
3Ease of operation
If subcutaneous ECG signals are used for cardiac monitoring, then ease of operation improves, but measurement precision deteriorates due to variable amplitude
Solution Approach 1:
The patent combines multiple ECG signals from different subcutaneous locations to compensate for variable amplitude characteristics. By synthesizing a composite signal from multiple sources, the system maintains ease of implantable monitoring while improving measurement precision through the combined signal strength and reduced variability
Data Source
AI summary
A computer implemented system and method include one or more processors configured to receive a plurality of electrocardiogram (ECG) signals from one or more subcutaneous implantable medical devices (IMDs) and combine at least two of the plurality of ECG signals to form a first composite ECG signal.