Respiration System ECG Suppression EMG Signal Isolation
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Solution Overview
Problem
Noninvasive respiration systems face challenges in accurately detecting breathing efforts, especially in neonates and COPD patients, due to dominant ECG signals masking EMG signals, and require multiple electrodes for both EMG and ECG recording, which is disadvantageous for small patients.
Innovation Solution
A respiration system with a control device that suppresses ECG components from electrode signals to obtain EMG signals for controlling the respiration drive, while also picking up and displaying ECG signals for heart rate monitoring, allowing for separate display of EMG and ECG data on a monitor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ECG signal components are suppressed to obtain EMG signals for breathing effort detection, then measurement precision of breathing effort is improved, but loss of information regarding cardiocirculatory status occurs
Solution Approach 1:
The control device segments the electrode signal into two distinct components: ECG signals are extracted and processed separately for cardiocirculatory monitoring, while EMG signals are obtained after ECG suppression for breathing effort detection. This segmentation allows both types of information to be processed independently without interference.
Solution Approach 2:
The control device acts as an intermediary that processes the raw electrode signal to separate ECG and EMG components. It uses signal processing techniques to identify and extract ECG components, suppress them to reveal EMG signals, while simultaneously preserving and making available the ECG information for display.
2Measurement precision
If multiple electrodes are used for both EMG and ECG recording, then measurement precision of both signals is improved, but device complexity increases
Solution Approach 1:
The electrode module serves multiple functions: it records both ECG and EMG signals simultaneously using the same electrodes. The control device is configured to process these signals to extract both cardiocirculatory and respiratory information, eliminating the need for separate electrode sets and reducing overall system complexity.
Solution Approach 2:
The system merges ECG and EMG recording capabilities into a single integrated solution. The same electrodes that detect breathing muscle activity also capture cardiac signals, and the control device combines processing of both signal types to provide comprehensive patient monitoring with reduced hardware requirements.
Data Source
AI summary
A respiration system for noninvasive respiration includes a respiration drive, which is controlled by a control device, and includes a patient module (4) with electrodes for picking up electrode signals from the surface of the chest of a patient. The control device is set up to suppress ECG signals in the electrode signals in order to obtain electromyographic signals (EMG signals) representing the breathing effort and to control the respiration drive as a function of the EMG signals. Provisions are made for deriving ECG signals from the electrode signals before said ECG signals are suppressed and for making data representative of the ECG available for display.