Defibrillator Oxygen Delivery Synchronization
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Solution Overview
Problem
Existing defibrillators with oxygen supply systems consume oxygen inefficiently due to continuous flow, leading to large and impractical devices, especially in emergency situations where oxygen is limited.
Innovation Solution
A defibrillator with a control system that delivers oxygen only during inspiratory ventilation phases, synchronized with cardiac massage and ventilation efforts, using a small gas pressure tank and an integrated oxygen unit, along with an acoustic and/or visual signal transmitter to guide rescuers for optimal frequency and phase coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oxygen flows continuously from the oxygen source, then the patient receives oxygen supply, but the oxygen consumption increases and the device becomes large and impractical
Solution Approach 1:
The oxygen supply is delivered in periodic pulses synchronized with the patient's respiratory cycle rather than continuously. The control device activates the oxygen valve only during inspiratory phases, creating a periodic action pattern that matches physiological demand and reduces waste
Solution Approach 2:
The device detects respiratory phase in advance and pre-times the oxygen delivery to arrive precisely at the onset of inspiration. This preliminary detection and timing ensures oxygen is available exactly when needed without requiring continuous flow
2Quantity of substance
If a large pressurized gas container is used to ensure sufficient oxygen supply, then oxygen availability is improved, but the device size and weight increase making it impractical for emergency use
Solution Approach 1:
By delivering oxygen in periodic pulses rather than continuous flow, the total oxygen consumption is dramatically reduced, allowing a small pressurized container to provide sufficient supply for extended emergency use without requiring large storage volumes
Solution Approach 2:
The system changes the flow rate parameter dynamically - delivering high flow during brief inspiratory phases and zero flow during expiratory phases. This parameter modulation allows a small container to meet total oxygen requirements that would otherwise demand large continuous storage
3Reliability
If oxygen is delivered continuously, then oxygenation is maintained, but the device complexity and impracticality increase for emergency situations
Solution Approach 1:
The device automatically detects respiratory phase and controls oxygen delivery without requiring manual intervention. The system serves itself by using the patient's own breathing pattern to trigger and time oxygen pulses, eliminating the need for operator judgment or adjustment during emergency use
Solution Approach 2:
The control device continuously monitors respiratory phase and uses this feedback to regulate oxygen valve activation. This closed-loop feedback ensures oxygen is delivered at the optimal moment in each respiratory cycle, maintaining reliable oxygenation while simplifying operation
Data Source
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AI summary
The device has a control device, which is attached to a voltage generator, which is connected with an electrode. The control device is provided with an oxygen conducting connection with an oxygen source, an oxygen valve and an oxygen outlet and a signal transducer. The signal transducer is designed for outputting acoustic and/or visual signals. The acoustic signal transducer is a loud speaker. The visual signal transducer is a colored LED, a display and/or light emitting radiation source. A breathing valve (1) is attached to the oxygen source. An independent claim is also included for a method for allocating clock pulses for a reliever.