Defibrillator Electrode Integrity Testing via DC Voltage
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Solution Overview
Problem
Defibrillator electrodes often remain unused for extended periods, leading to potential degradation of their electrical integrity, which can compromise the efficacy of shocks administered during cardiac arrests, especially in public locations where users may lack experience with defibrillator technology.
Innovation Solution
A defibrillator with an integrated electrode test system that includes a test initiation device, a test signal generator, a test signal switch, and a test processing device to assess the electrical conductivity of the electrodes using a DC voltage test signal, providing a pass or fail result and triggering warnings or preventing defibrillation signals if integrity is compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electrodes remain in packaging for extended periods, then storage convenience is improved, but electrical integrity deteriorates
Solution Approach 1:
The patent applies preliminary action by implementing automated electrode testing that occurs before the defibrillator is actually needed for patient treatment. The test initiation device automatically triggers tests at predetermined intervals or upon power-up, assessing electrode integrity in advance so that degraded electrodes are identified before critical use, resolving the contradiction between long-term storage convenience and maintained electrical integrity.
2Reliability
If automated testing is implemented, then reliability of electrode integrity assessment is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the electrode testing functionality directly into the existing defibrillator unit. The test signal generator, test signal switch, and test processing device are combined with the defibrillator's power supply and control systems, allowing automated electrode integrity assessment without requiring separate external testing equipment, thus improving reliability while limiting the increase in overall device complexity.
3Reliability
If frequent testing is performed, then electrode integrity monitoring is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by scheduling electrode integrity tests to occur at predetermined intervals (e.g., weekly or monthly) or upon specific triggers such as power-up events. This periodic testing approach ensures adequate monitoring of electrode integrity over time while avoiding continuous testing that would unnecessarily consume energy, thus resolving the contradiction between reliable monitoring and energy conservation during extended storage periods.
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 the electrical integrity of defibrillator electrodes is consistently maintained or quickly identified, ensuring effective shock delivery even by inexperienced users in public settings, thereby improving the chances of successful resuscitation by automating regular testing and self-check processes.
Implementation Method 1
a test signal generator operable to generate a dc voltage test signal... passing the dc voltage test signal to the electrodes... receive a dc voltage electrode return signal
Data Source
AI summary
A defibrillator (1) comprising electrodes (3), a connection (5) for electrically connecting the electrodes together, a defibrillation circuit (9) connected to the electrodes, and an electrode test system (7), comprisinga test initiation device operable to generate a test initiating signal,a test signal generator (15) operable to generate a dc voltage test signal,a test signal switch (17) connected to the electrodes and, on receipt of the test initiating signal, operable to connect the electrodes to the test signal generator for passing the dc voltage test signal to the electrodes, anda test processing device (19) connected to the test signal switch to receive a dc voltage electrode return signal and process the electrode return signal to determine a pass test result or a fail test result for the electrodes.