CPR-AED Control Algorithm for Rhythm Analysis and Chest Compression
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Solution Overview
Problem
Existing cardiopulmonary resuscitation (CPR) devices struggle with accurately determining chest compression depth and heart rhythm analysis, while automated external defibrillators lack versatility for patients at risk, making it difficult to restore normal heartbeat.
Innovation Solution
A system combining a CPR device with an automated external defibrillator that includes an algorithm for analyzing heart rhythm and simultaneously or alternately performing chest compressions and electric shocks based on the heart rhythm analysis, with a sliding chest compression unit for accurate patient chest compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cardiopulmonary resuscitation device is used, then chest compression can be provided to patients, but it cannot analyze heart rhythm to determine cardiac arrest
Solution Approach 1:
The patent combines a cardiopulmonary resuscitation device with an automated external defibrillator into an integrated system. The CPR device provides chest compression while the AED component enables heart rhythm analysis through electrode pads placed on the patient's chest. This merging allows the single device to perform both mechanical compression and electrical rhythm detection, resolving the contradiction between providing compression and analyzing heart rhythm.
2Measurement precision
If an automated external defibrillator is used, then heart rhythm can be analyzed, but it cannot provide chest compression for patients at risk
Solution Approach 1:
The integrated system merges the AED's heart rhythm analysis capability with the CPR device's chest compression function. The control unit coordinates both functions based on the detected rhythm, allowing the device to provide comprehensive treatment including compression, rhythm analysis, and defibrillation when needed, thus achieving functional versatility while maintaining measurement precision.
Solution Approach 2:
The combined device achieves multi-functionality by incorporating both CPR compression mechanisms and AED defibrillation capabilities. It can adapt its function based on patient condition: providing compression for cardiac arrest, analyzing rhythm through electrodes, and delivering shocks when fibrillation is detected, making it universally applicable to various cardiac emergencies.
3Ease of operation
If manual CPR is performed by untrained persons, then chest compression can be attempted, but accurate compression depth determination is difficult
Solution Approach 1:
The device performs self-service by automatically monitoring compression depth through its sensors and providing real-time feedback to the operator. The system detects whether compression depth is adequate and can guide the user through voice prompts or visual displays, enabling untrained persons to achieve accurate compression depths without requiring manual measurement or estimation skills.
Solution Approach 2:
The integrated system incorporates feedback mechanisms that monitor compression depth and quality in real-time. Sensors detect the mechanical pressure applied during chest compression and provide immediate feedback to the operator, allowing continuous adjustment to maintain accurate compression depth even when performed by untrained individuals.
Data Source
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AI summary
The present invention relates to an algorithm for controlling a system combining a cardiopulmonary resuscitation device and an automated external defibrillator, which is a combination of a cardiopulmonary resuscitation device and an automated external defibrillator. The algorithm may include: a first step in which a control unit determines whether the system combining a cardiopulmonary resuscitation device and an automated external defibrillator is set to an automated external defibrillator mode and/or a chest compression mode; a second step in which the control unit determines whether a plurality of electrodes or pads of an electrocardiogram measurement unit is attached to the chest of a patient; a third step in which a rhythm determination and shock signal generation unit analyzes a heart rhythm of the patient through the electrocardiogram measurement unit to determine whether the heart rhythm is a shockable rhythm or a nonshockable rhythm; a fourth step in which, after the heart rhythm of the patient is analyzed, a chest compression unit is lowered to be in contact with the chest of the patient and presses the chest of the patient; a fifth step in which the control unit determines whether an input signal is input to a shock button when the rhythm determination and shock signal generation unit determines that the heart rhythm of the patient is a shockable rhythm; a sixth step in which, when an input signal is input to the shock button, an electric shock unit generates high voltage energy through the rhythm determination and shock signal generation unit to apply an electric shock to the patient; and a seventh step in which, when the control unit determines that no input signal is input to the shock button, the control unit controls the electric shock unit to internally discharge the high voltage energy.