Wearable ECG System for Automated Ischemia Detection and Treatment
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Solution Overview
Problem
Current treatments for myocardial ischemia, such as coronary artery disease, are inadequate as they rely on patient-initiated medication during symptomatic episodes, leaving silent ischemia undetected and untreated, and existing methods for automated treatment delivery are inefficient or prone to tolerance and prolonged onset.
Innovation Solution
A wearable device that monitors ECG signals using electrodes connected to signal acquisition and processing hardware interfaced with a microcontroller, which detects ST segment deviations and automatically administers medication based on predetermined criteria, alerting the user to seek medical attention for acute conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If patient-initiated medication during symptomatic episodes is used, then treatment during angina pectoris is possible, but silent ischemia remains undetected and untreated
Solution Approach 1:
The system enables the patient's own body (through ECG monitoring) to detect and signal ischemic episodes, eliminating the need for patient self-reporting of symptoms. The monitoring device autonomously detects ST segment deviations and triggers medication administration without requiring patient awareness or action.
Solution Approach 2:
The system continuously monitors ECG signals and provides real-time feedback about ischemic conditions. When ST segment deviations are detected, the system immediately triggers medication delivery, creating a closed-loop feedback mechanism that responds to physiological changes rather than relying on symptom reporting.
2Extent of automation
If automated treatment delivery is implemented, then continuous monitoring and treatment is possible, but device complexity increases
Solution Approach 1:
The system combines multiple functions into a single integrated device: ECG monitoring, ischemia detection, medication administration, and user alerting are all merged into one portable unit. This consolidation reduces the need for multiple separate devices and simplifies the overall system architecture.
Solution Approach 2:
The system performs automated detection and medication delivery without requiring complex external monitoring or manual intervention. The embedded algorithms autonomously analyze ECG signals and trigger treatment based on predetermined criteria, reducing the need for complex external control systems.
3Reliability
If transdermal nitrate patches are used prophylactically, then prevention of ischemia is possible, but tolerance develops and prolonged onset prevents acute treatment
Solution Approach 1:
The system is pre-configured with ischemia detection algorithms and medication delivery mechanisms that activate immediately upon detecting ST segment deviations. This preliminary preparation eliminates the need for prolonged prophylactic patch application while ensuring rapid response to acute ischemic events.
Solution Approach 2:
The system replaces the mechanical/prophylactic nitrate patch approach with an electronic detection and automated delivery system. Instead of relying on continuous patch application and gradual tolerance management, the system uses ECG monitoring to detect ischemia and triggers immediate medication delivery, substituting a passive prophylactic mechanism with an active responsive system.
4Reliability
If daily beta blocker and calcium channel blocker pills are taken, then ischemia prevention is possible, but daily side effects cause patients to stop taking them
Solution Approach 1:
The system automates the treatment decision-making process by using the patient's own ECG data to trigger medication delivery. This eliminates the need for patients to remember and take daily medications, significantly improving compliance while maintaining effective ischemia prevention through objective physiological monitoring.
Solution Approach 2:
The system provides real-time feedback about ischemic conditions and automatically adjusts medication delivery based on detected ST segment deviations. This feedback mechanism replaces the need for daily patient self-monitoring and medication taking, improving ease of operation while maintaining reliable ischemia prevention.
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
The device provides continuous monitoring and automated treatment for myocardial ischemia, enabling timely intervention during both symptomatic and silent episodes, reducing the risk of myocardial infarction and arrhythmia by ensuring immediate medication delivery.
Implementation Method 1
A first lead electrode is placed on a first body surface area of the patient and a second lead electrode is placed on a second body surface area of the patient. The first and second lead electrodes are coupled to a differential amplifier through a respective unity gain buffer.
Data Source
AI summary
A method and system for detecting and treating abnormal cardiac function. The patient's cardiac activity is substantially continuously monitored via a portable wearable device having electrodes and a microcontroller. Features in the monitored cardiac activity indicative of abnormal cardiac function are automatically detected. In response to the detection of an abnormal detected cardiac function, at least one person is automatically alerted of the detected abnormal cardiac function of the patient, and medication may be automatically caused to be administered to the patient. The portable wearable device preferably includes a plurality of electrodes and a microcontroller in communication with the electrodes, adapted to receive sensed cardiac activity signals and create digital signals enabling identification of at least one cardiac parameter. A remote computer server is in communication with the portable wearable device and compares values of the identified cardiac parameter with a range of normal values for the cardiac parameter.