Self-Application AED Layout for Portable Defibrillation
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Solution Overview
Problem
Existing public access automated external defibrillators (AEDs) are bulky, costly, and complex, making them impractical for widespread personal use and deployment, particularly in locations away from public access points, leading to high mortality rates from sudden cardiac arrest due to ventricular fibrillation.
Innovation Solution
A compact, lightweight, single-use AED designed for personal carry, utilizing a low-voltage energy storage circuit with a hybrid energy supplementing module, enabling intuitive operation and immediate shock delivery, housed in a pocket-sized form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional public access AEDs are designed for reusability and integrated telemetry with constant self-testing, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent divides the AED system into two separate components: a disposable defibrillator unit containing the capacitor and electrode pads, and a reusable controller unit containing the telemetry and processing electronics. This segmentation allows the disposable unit to be simple and inexpensive while the reusable unit provides advanced functionality, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The patent employs a disposable defibrillator unit that is used once and then discarded, eliminating the need for complex reusability features in the entire system. The disposable nature allows for simpler design with fewer components that would otherwise need to withstand repeated stress and testing, thereby reducing complexity while maintaining reliability through the reusable controller.
2Reliability
If conventional public access AEDs are designed for multiple uses with robust components, then reliability is improved, but weight and portability worsen
Solution Approach 1:
By separating the heavy-duty reusable controller from the disposable defibrillator unit, the patent allows the disposable unit to be lightweight since it doesn't need to withstand repeated use. The reusable controller bears the structural demands, enabling the moving disposable unit to be light enough for personal carry while the system as a whole maintains high reliability.
3Reliability
If constant self-testing is performed to eliminate failure modes, then reliability is improved, but energy consumption increases
Solution Approach 1:
The disposable defibrillator unit requires minimal energy since it is not subjected to repeated testing and stress. The constant self-testing and reliability checks are performed by the reusable controller, which has its own power source. This division eliminates the need for the disposable unit to have high energy capacity, reducing overall energy consumption while maintaining system reliability.
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
Facilitates widespread availability and immediate use of AEDs by non-medical rescuers, potentially reducing cardiac arrest fatalities by ensuring timely defibrillation, even in non-public access locations.
Implementation Method 1
A defibrillator includes a capacitor and an electrode enclosure configured to hold a pair of electrode pads with a wire connected to each pad and to the capacitor
Implementation Method 2
The circuit board includes a battery configured to transform chemical energy to electrical energy
Data Source
AI summary
A method for self-application of a defibrillator is provided. An opening of a cover of a defibrillator is identified. A pair of pads are stored in an enclosure of the defibrillator, below the cover. Charging of the defibrillator is initiated upon the opening of the cover. A trigger for recording cardiac data of a patient via the defibrillator is identified. The trigger includes placement of the pads on the patient, by the patient. Recording of the cardiac data of the patient is initiated upon identifying the trigger. The recording is monitored for a shockable event.