Defibrillator Power Adapter Authentication Circuit

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Solution Overview

Problem

External defibrillators face safety and reliability issues due to the use of after-market power adapters that may not meet quality standards, making it difficult to ensure the performance and safety of the device.

Innovation Solution

A power adapter system that authenticates itself to the defibrillator through a data set, allowing the device to operate differently based on authentication, such as drawing power more slowly or limiting functionality if authentication is not confirmed, ensuring safe and reliable operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If after-market power adapters are used to extend device availability, then device accessibility is improved, but safety and reliability are compromised

Engineering Contradiction:

Improvedevice accessibilityVSAvoidsafety and reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

An authentication system acts as an intermediary between the power adapter and defibrillator. The system includes authentication circuitry in both the adapter and device that verifies compatibility through data exchange, ensuring only approved adapters can power the life-saving equipment while still allowing market competition.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The authentication system provides feedback to both the user interface and the power management system. When an unauthenticated adapter is detected, the system alerts users through the interface and automatically limits power delivery through the power management circuitry, preventing unsafe operation.

Inventive Principle:

Principle #23Feedback

2Reliability

If authentication systems are implemented to ensure adapter quality, then safety is improved, but device complexity increases

Engineering Contradiction:

ImprovesafetyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The authentication functionality is segmented into separate modules: authentication circuitry in the power adapter, authentication circuitry in the defibrillator, user interface for displaying authentication status, and power management circuitry for controlling power delivery. This modular approach isolates complexity to specific components rather than distributing it throughout the entire system.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8179087B2Selective recharging of medical device depending on authentication of power adapter system

Publication Date: 2012.05.15 PHYSIO CONTROL CORP

AI summary

In an embodiment, a medical device can be used with a power adapter system. In addition, it can receive a data set from the power adapter system, and examine the data set to determine whether the data set confirms or not an authentication of the power adapter for use with the medical device. If the authentication is not confirmed, the external medical device can operate differently than otherwise. For example, power can be drawn more slowly from the power adapter system.