Asymmetric ECG Patch Layout for Automated AMI Detection
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Solution Overview
Problem
Existing cardiac monitoring technologies, such as 12-lead ECG systems, are cumbersome and require medical personnel for interpretation, leading to delays and inaccuracies in diagnosing acute myocardial infarction (AMI), while simplified systems lack sufficient diagnostic information and reliability.
Innovation Solution
A mobile, hand-held device with four electrodes arranged asymmetrically to record orthogonal cardiac leads, allowing automated analysis and interpretation without the need for medical personnel, using a processor to synchronize and compare cardiac signals for accurate detection of conditions like AMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a full 12-lead ECG is used for comprehensive cardiac diagnosis, then diagnostic accuracy is improved, but device complexity and ease of operation deteriorate due to complicated electrode placement requirements
Solution Approach 1:
The patent extracts only the essential diagnostic information from a full 12-lead ECG by using a simplified 3-lead configuration. Specifically, it uses leads I, II, and III (or equivalent orthogonal leads) that provide sufficient diagnostic capability for detecting acute myocardial infarction while eliminating the complexity of placing and interpreting all 12 leads. This extraction principle allows patients to perform self-diagnosis without requiring complex electrode placement procedures.
Solution Approach 2:
The patent segments the ECG recording system into a portable hand-held device with only three essential leads rather than requiring a complete 12-lead system. This segmentation maintains the core diagnostic functionality while reducing the operational complexity to a level suitable for patient self-performance.
2Ease of operation
If a single lead or reduced ECG system is used to simplify the recording process, then ease of operation is improved, but diagnostic reliability and measurement precision deteriorate
Solution Approach 1:
The patent employs an asymmetric three-lead configuration where the leads are arranged in a specific non-symmetric pattern (leads I, II, and III with their respective electrode placements). This asymmetric arrangement provides orthogonal viewing angles of the cardiac electrical activity, enabling reliable detection of AMI while maintaining ease of operation. The asymmetric geometry ensures that the three leads capture sufficient diagnostic information without requiring a full 12-lead system.
3Productivity
If automated software-based AMI detection is implemented, then productivity and loss of time are improved, but device complexity increases
Solution Approach 1:
The patent implements self-service automation where the hand-held device automatically performs ECG recording and AMI detection without requiring medical personnel intervention. The device includes integrated software that automatically analyzes the three-lead ECG data, compares it against diagnostic criteria, and provides automated AMI detection results. This self-service capability significantly improves productivity by eliminating the need for professional interpreters while keeping the device relatively simple.
Solution Approach 2:
The automated detection system incorporates feedback mechanisms where the device continuously monitors the ECG signal, automatically identifies cardiac abnormalities, and provides real-time feedback to the user. The system compares recorded ECG parameters against predefined AMI diagnostic criteria and immediately indicates when AMI is detected, enabling rapid response without requiring complex manual analysis procedures.
4Measurement precision
If medical personnel are required for ECG interpretation, then measurement precision is improved, but loss of time and operational costs increase
Solution Approach 1:
The patent replaces the mechanical system of human medical personnel interpretation with an automated electronic detection system. The hand-held device uses integrated software algorithms to automatically analyze ECG data and detect AMI, eliminating the need for professional interpreters. This substitution maintains diagnostic accuracy by using validated automated algorithms while significantly reducing treatment delay and operational costs associated with requiring medical personnel for each ECG interpretation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables early, reliable, and automated diagnosis of cardiac conditions like AMI, reducing treatment delays and operational costs by providing stable electrical contact and eliminating errors in signal interpretation.
Implementation Method 1
During the recording procedure, the electrical voltages between two characteristics points are measured, and corresponding signals are called ECG leads
Data Source
AI summary
Methods and apparatuses, including devices and systems, for remote and detection and/or diagnosis of acute myocardial infarction (AMI). In particular, described herein are handheld and adhesive devices having an electrode configuration capable of recording three orthogonal ECG lead signals in an orientation-specific manner, and transmitting these signals to a processor. The processor may be remote or local, and it may automatically or semi-automatically detect AMI, atrial fibrillation or other heart disorders based on the analyses of the deviation of the recorded 3 cardiac signals with respect to previously stored baseline recordings.