Magnet-Triggered AED Assembly for Pocket-Size Readiness
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Solution Overview
Problem
Conventional public access automated external defibrillators (AEDs) are bulky, expensive, and complex, making them impractical for widespread personal use and often unavailable during sudden cardiac arrest (SCA) incidents, which occur predominantly outside public access locations, leading to high mortality rates due to delayed or incorrect use.
Innovation Solution
A compact, pocket-sized, single-use AED with de-energizable circuitry that includes a magnetically triggered reed switch, allowing intuitive deployment and reducing wear on components, thus ensuring immediate availability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional AEDs are designed for reuse with integrated telemetry and constant readiness checks, then functionality and reliability are improved, but device size, weight, and cost increase significantly
Solution Approach 1:
The AED is designed to be pre-assembled and pre-tested as a complete unit before deployment. The device performs self-testing at power-up and maintains readiness without requiring constant monitoring or recharging, allowing it to be dropped off and retrieved later after use. This preliminary preparation enables the AED to achieve reliability comparable to reusable systems while maintaining a compact, disposable form factor.
2Ease of operation
If AEDs are made compact and pocket-sized for widespread personal use, then accessibility and availability improve, but device complexity and manufacturing precision requirements increase
Solution Approach 1:
The AED integrates multiple functions into a single compact unit: the defibrillation circuitry, electrode pads, battery, microcontroller, and housing are all combined into one disposable device. The electrode pads are pre-attached to the housing with conductive adhesive, and the entire assembly is sealed in protective packaging. This merging of components into a unified compact design enables pocket-sized portability while maintaining manufacturing feasibility through standardized integration processes.
3Speed
If AED components are constantly energized to ensure readiness, then response time is improved, but component wear and failure risk increase
Solution Approach 1:
The AED performs self-testing periodically at power-up and maintains capacitors in a charged state without continuous power consumption. The device transitions to a low-power state after initial testing, preserving components from constant stress while ensuring readiness. When activated, the AED rapidly charges capacitors and delivers therapy within seconds, achieving fast response time without requiring continuous energization that would accelerate component wear.
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 design facilitates rapid and intuitive use by non-medical rescuers, extending battery life, reducing wear, and lowering costs, thereby increasing the chances of survival from SCA by ensuring immediate access and effective deployment.
Implementation Method 1
a magnetically triggered reed switch
Data Source
AI summary
In one embodiment, a defibrillation assembly energizable through magnet removal is provided. The defibrillation assembly includes an a magnetically triggered reed switch; an energy storage element that supplies power to the magnetically triggered reed switch; circuitry configured to generate a defibrillation waveform, wherein the circuitry is isolated from the energy storage element by the electromechanical component; a case within which at least a portion of the circuitry is located and comprising a printed circuit board (PCBA) enclosure within which a magnet is positioned that keeps the magnetically triggered reed switch in an open position, wherein an opening of the case that comprises removal of the magnet from the position causes the magnetically triggered reed switch to switch into a closed position and for the power to flow to the circuitry through the magnetically triggered reed switch.