Defibrillator Sync Mode Warning After Shock Delivery

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Solution Overview

Problem

Manual defibrillators and Automated External Defibrillators (AEDs) face challenges in accurately determining the appropriate shock mode (synchronized or asynchronous) based on the patient's heart rhythm, leading to potential user errors and incorrect therapy delivery, which can exacerbate arrhythmias or fail to provide necessary treatment.

Innovation Solution

An external defibrillator with a housing, heart rhythm detector, manual mode controller, and automatic mode controller that sets the device to synchronous or asynchronous shock mode based on input from the user and detected heart rhythm, automatically adjusting the mode after shock delivery to ensure appropriate therapy without further human intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual mode controller is used to set shock mode based on user input, then ease of operation is improved, but user error and incorrect therapy delivery increase

Engineering Contradiction:

Improveease of operationVSAvoidreliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The device provides visual feedback through an indicator that displays the current shock mode (synchronized or asynchronous) to the user. This feedback mechanism allows the user to verify the selected mode before shock delivery, reducing user error while maintaining manual control capability.

Inventive Principle:

Principle #23Feedback

2Reliability

If automatic mode controller is used to set shock mode based on detected heart rhythm, then reliability is improved, but device complexity increases

Engineering Contradiction:

ImprovereliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The automatic mode controller pre-determines the appropriate shock mode by analyzing the detected heart rhythm before shock delivery is required. This preliminary analysis ensures reliable mode selection based on physiological conditions without requiring complex real-time decision-making during emergency use.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If sync mode is not warned after shock delivery, then device complexity is reduced, but loss of information occurs

Engineering Contradiction:

Improvedevice complexityVSAvoidloss of information

Core Design Contradiction:

Device complexityVSLoss of information

Solution Approach 1:

The indicator is pre-configured to display the shock mode information before shock delivery. This ensures that critical mode information is available to the user in advance, preventing information loss during the critical post-shock assessment period without requiring complex warning systems.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10463865B2Defibrillator warning of sync mode setting after delivery of shock

Publication Date: 2019.11.05 PHYSIO CONTROL CORP

AI summary

An external defibrillator can have a synchronous shock operating mode and an asynchronous shock operating mode and include a controller to set the defibrillator in the synchronous shock operating mode or the asynchronous shock operating mode. The defibrillator can also include a shock module to cause the defibrillator to deliver shock therapy to the patient according to the operating mode of the defibrillator, and a prompt module to transmit a prompt, after delivery of the shock therapy, that includes the operating mode of the defibrillator.