Single-Inlet Variable-Flow CPAP Generators for Rapid PPV-CPAP Switching
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Solution Overview
Problem
Existing devices for positive pressure ventilation (PPV) and continuous positive airway pressure (CPAP) treatment face challenges in providing efficient and safe respiratory support due to the complexity of fresh gas flow adjustments, which can lead to user errors and reduced effectiveness, especially in medical installations lacking multiple gas outputs.
Innovation Solution
A device with multiple variable flow CPAP generators connected to a single fresh gas flow inlet, patient interface, and outlet, allowing for a rapid switch between PPV and CPAP modes without equipment change, and enabling integration with both low-tech and high-tech ventilator equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a second fresh gas flow tube is added to provide adjustable rise time in PPV mode, then ventilation efficiency is improved, but device complexity increases and user error risk increases
Solution Approach 1:
The patent merges the function of multiple fresh gas flow tubes into a single tube by positioning it such that it supplies fresh gas to multiple CPAP generators simultaneously. This consolidation maintains the ability to provide adjustable rise time and efficient ventilation while reducing the number of separate components, thereby lowering device complexity and potential user error risk.
Solution Approach 2:
The single fresh gas flow tube is designed to serve multiple functions by supplying gas to several CPAP generators through strategic positioning. This multi-functional design allows the system to achieve adjustable rise time and ventilation efficiency without requiring separate dedicated tubes for each generator, thus simplifying the overall device structure.
2Manufacturing precision
If multiple fresh gas flow tubes are used to adjust rise time, then pressure control precision is improved, but the number of required gas outputs increases
Solution Approach 1:
The patent combines the gas supply function for multiple CPAP generators into a single fresh gas flow tube. This tube is positioned to distribute fresh gas to several generators simultaneously, enabling precise pressure control without requiring multiple separate gas outputs from the medical installation, thus improving adaptability.
Solution Approach 2:
The single fresh gas flow tube is effectively segmented in its function by distributing gas to multiple CPAP generators at different stages of the respiratory cycle. This functional segmentation allows precise control of pressure rise time while maintaining a unified gas supply pathway that is compatible with standard medical installations.
3Volume of moving object
If multiple variable flow CPAP generators are connected to a single fresh gas flow inlet, then device size is reduced and handling is improved, but gas flow distribution control becomes more difficult
Solution Approach 1:
The patent merges multiple fresh gas flow inlets into a single common inlet that supplies all CPAP generators. This consolidation reduces device size and simplifies the gas supply interface, while the individual flow control valves on each generator maintain ease of operation for gas flow distribution control.
Solution Approach 2:
The system employs dynamic flow control through individual variable flow valves on each CPAP generator. This allows the gas flow distribution to be dynamically adjusted according to patient needs, maintaining ease of operation despite the unified inlet structure. The dynamic adjustment capability compensates for the potential control difficulties arising from the merged inlet design.
Data Source
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AI summary
The present invention relates to a device (100) for positive pressure ventilation (PPV) and continuous positive airway pressure (CPAP) treatment comprising a fresh gas flow inlet (2) arranged to receive a fresh gas flow from a fresh gas flow tube connectable thereto; a patient interface end (3) which is connectable with a patient interface; an outlet (4) having an open end (5); and several variable flow CPAP generators (6), wherein each of the several variable flow CPAP generators is connected with the fresh gas flow inlet, the patient interface end and the outlet of the device. A simplified device and system is provided, respectively, which is easy to use and allows for a rapid switch between PPV and CPAP treatment without change of equipment.