CPR Feedback System Using ECG and Biosignal Metrics
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Solution Overview
Problem
Current CPR methods lack effective feedback mechanisms to ensure high-quality chest compressions, leading to insufficient oxygenation of the heart and brain due to variations in compression rate and depth, which can be detrimental during resuscitation efforts.
Innovation Solution
A CPR feedback system utilizing ECG and biosignal measurements to assess and provide real-time feedback on CPR performance, adjusting compression depth and rate based on reference and current metrics to optimize chest compressions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time CPR feedback system is implemented using ECG and biosignal monitoring, then CPR performance quality is improved, but device complexity increases
Solution Approach 1:
The patent implements real-time feedback by continuously monitoring ECG and biosignal metrics during CPR, comparing current values against reference values, and providing immediate feedback to the rescuer about compression quality, rate, and depth through visual and audible signals
Solution Approach 2:
The system integrates multiple monitoring functions (ECG analysis, biosignal measurement, compression depth detection, compression rate monitoring) into a single unified platform that provides comprehensive CPR assessment through one device
2Measurement precision
If continuous monitoring of ECG and biosignals during CPR is performed, then measurement precision of CPR efficacy is improved, but use of energy increases
Solution Approach 1:
The system performs continuous monitoring of critical parameters (ECG and biosignals) while providing feedback only when deviations from target values are detected, rather than continuously activating all feedback mechanisms regardless of need
3Productivity
If dynamic adjustment of compression depth and rate based on real-time metrics is implemented, then CPR effectiveness is improved, but difficulty of operation increases
Solution Approach 1:
The system automatically adjusts compression parameters by continuously monitoring ECG and biosignal metrics, comparing them against reference values, and autonomously providing feedback guidance for optimal compression depth and rate without requiring manual intervention or complex user calculations
4Loss of time
If real-time feedback is provided during CPR to guide compression quality, then loss of time in achieving effective CPR is reduced, but device complexity increases
Solution Approach 1:
The system establishes reference ECG and biosignal values before CPR begins, so that when compression starts, the comparison and feedback mechanisms are already prepared and can immediately assess compression quality without delay
Data Source
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AI summary
A CPR feedback system (20) for assessing CPR carried out by a person on a subject and providing CPR feedback to the person, comprising an ECG system (22) configured to measure ECG signals of the subject, a biosignal system (24) configured to measure biosignals of the subject, a CPR assessment system (26) connected to the ECG system to receive ECG signals and connected to the biosignal system to receive biosignals, and a CPR feedback unit (28) connected to the CPR assessment system and configured to receive CPR feedback signals and issue CPR feedback to the person, wherein the CPR assessment system is configured to perform the steps (i) establish a reference ECG signal metric and a target biosignal metric, (ii) produce a CPR feedback signal advising the person to start CPR, (iii) receive ECG signals measured during a plurality of chest compressions and use the ECG signals to establish a current ECG signal metric, (iv) receive biosignals measured during the plurality of chest compressions and use the biosignals to establish a current biosignal metric, (v) compare the current ECG signal metric with the reference ECG signal metric and compare the current biosignal metric with the target biosignal metric, (vi) when the current ECG signal metric is less than the reference ECG signal metric and the current biosignal metric is less than the target biosignal metric, produce a CPR feedback signal advising the person to improve CPR performance, (vii) when the current ECG signal metric is less than the reference ECG signal metric and the current biosignal metric is equal to or greater than the target biosignal metric, increase the target biosignal metric and produce a CPR feedback signal advising the person to improve CPR performance, (viii) when the current ECG signal metric is equal to or greater than the reference ECG signal metric, set the reference ECG signal metric equal to the current ECG signal metric and produce a CPR feedback signal advising the person to maintain current CPR performance.