Reserve Battery Activation Mechanism for AED Power Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Automated external defibrillators (AEDs) face challenges with power source reliability due to battery degradation over time, particularly in devices used infrequently, which can lead to inadequate electrical energy delivery during emergency situations.
Innovation Solution
The implementation of reserve power sources, such as liquid or thermal batteries with activation mechanisms, including mechanical, electrical, or pyrotechnic initiators, that provide long-lasting power without external energy sources and include safety features to prevent accidental activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If regular primary or rechargeable batteries are used to power portable AEDs, then the device can be operated frequently and tested regularly, but the battery charge and performance deteriorate over time leading to unreliable power supply in emergency situations
Solution Approach 1:
The battery is prepared in advance in an inactive state with all components (electrodes, electrolyte, separator) already in place but separated or inactive. Upon activation, the battery immediately begins producing power without requiring charging time. This preliminary preparation ensures the battery is ready to deliver full power instantly when needed, resolving the contradiction between reliability and shelf life by eliminating the degradation issue entirely through the reserve battery approach.
Solution Approach 2:
The patent employs a disposable reserve battery that is replaced periodically rather than recharged. The battery contains consumable components like electrolyte and active materials that are designed to be used once and then discarded. This approach trades the ongoing degradation problem of rechargeable batteries for a simple replacement strategy, ensuring reliable power supply while maintaining long shelf life through proper sealing and protection of inactive components.
2Reliability
If reserve batteries with long shelf life are used, then power supply reliability is improved, but the device complexity increases due to activation mechanisms and safety features
Solution Approach 1:
The activation mechanism is designed as a separate, removable component that can be easily detached or activated only when needed. The safety features such as seals or protective covers are integrated into the battery housing but can be cleanly separated during activation. This extraction approach minimizes the complexity burden on the main AED device while still providing the necessary activation and safety functions for the reserve battery.
Solution Approach 2:
The reserve battery incorporates self-contained safety features and activation mechanisms that require minimal external intervention. For example, the battery may have built-in seals that break automatically upon insertion into the device, or activation switches that are self-latching and require simple user action. This self-service design reduces the overall system complexity by making the battery autonomously manage its own safety and activation requirements.
3Ease of operation
If reserve batteries are used without activation prevention features, then ease of operation is improved, but accidental activation may occur causing safety hazards
Solution Approach 1:
The battery design incorporates preliminary protective measures such as sealed housings, protective caps, or interlocked mechanisms that prevent accidental activation before use. These features are built into the battery structure itself, requiring deliberate action to activate. The preliminary anti-action is designed to be intuitive and easy to override when intentional activation is desired, thus maintaining ease of operation while preventing accidental activation through obvious but simple safety features.
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
Ensures reliable and rapid electrical energy delivery for AEDs, maintaining performance for up to 20 years or more without degradation, ensuring effective defibrillation in emergency situations.
Implementation Method 1
a reserve battery which requires activation to produce power
Implementation Method 2
thermal batteries with activation mechanisms, including mechanical, electrical, or pyrotechnic initiators
Data Source
AI summary
A power supply including: a reserve power source for providing power, the reserve power source including: a liquid reserve battery which requires activation to produce power; an activator having a liquid electrolyte for activating the liquid reserve battery upon a mechanical activation such that the liquid electrolyte is forced from the activator into the liquid reserve battery through a communication between the activator and the liquid reserve battery; a pair of terminals operatively connected to the liquid reserve battery for outputting the produced power; and a mechanical stop for preventing the activator from activating the liquid reserve battery, the stop being selectively removable when activation is desired. Where the activator includes a container having the liquid electrolyte contained therein and the activator further includes: a top and a bellow attached on one end to the top and to a portion of the liquid reserve battery at an other end.