Integrated Manometer Patient Valve for Manual Resuscitator Pressure Monitoring
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Solution Overview
Problem
Current manual resuscitator devices lack effective pressure monitoring and control, particularly in pre-hospital settings, which can lead to over-inflation and barotrauma risks for patients, necessitating a solution for precise pressure management during ventilation.
Innovation Solution
A patient valve with integrated linear or dial manometers that measure both inhalation and exhalation pressures, combined with a pressure relief valve, to prevent over-inflation and ensure safe ventilation pressures, enhancing clinician control and patient safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual resuscitator devices are used without integrated pressure monitoring, then the device complexity is reduced and ease of operation is improved, but pressure control precision deteriorates and risk of over-inflation increases
Solution Approach 1:
The patent combines multiple functions into a single integrated valve assembly: the non-rebreathing valve, pressure relief valve, and manometer are merged into one unit. This integration allows pressure monitoring and control features to be added without requiring separate standalone devices, thereby improving measurement precision while limiting the increase in overall device complexity.
Solution Approach 2:
The patient valve assembly serves multiple functions simultaneously: it acts as a non-rebreathing valve for unidirectional airflow, a pressure relief valve for overpressure protection, and a manometer for pressure monitoring. This multi-functionality allows a single component to address multiple clinical needs, improving pressure control precision without proportionally increasing device complexity.
2Object-affected harmful factors
If a pressure relief valve is added to prevent over-inflation, then patient safety is improved, but device complexity increases
Solution Approach 1:
The pressure relief valve is integrated into the patient valve assembly rather than being a separate component. This merging approach allows overpressure protection to be implemented without adding significant complexity to the overall device, as the pressure relief mechanism shares the same housing and operational interface as the non-rebreathing valve.
Solution Approach 2:
The pressure relief valve operates automatically based on preset pressure thresholds without requiring manual intervention or monitoring by the operator. The valve self-regulates by opening when pressure exceeds the safe threshold (e.g., 40 cm H2O) and closing when pressure returns to safe levels, thereby reducing barotrauma risk without adding operational complexity.
3Measurement precision
If manometers are integrated into the valve housing, then pressure monitoring capability is improved, but manufacturing complexity increases
Solution Approach 1:
The manometer is integrated directly into the valve housing structure, combining the pressure measurement function with the existing valve assembly. This merging allows pressure monitoring capability to be added while utilizing the same manufacturing processes and materials for both the valve and manometer components, thereby limiting the increase in manufacturing complexity.
4Reliability
If non-rebreathing valve functionality is maintained, then ventilation effectiveness is improved, but device complexity increases compared to demand valve
Solution Approach 1:
The non-rebreathing valve functionality is integrated with the pressure relief valve and manometer in a single assembly. This combination allows the device to maintain reliable unidirectional airflow control while sharing common structural elements and operational mechanisms with the pressure control features, thereby limiting the net increase in device complexity.
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 integration of manometers allows for precise pressure monitoring and control, reducing the risk of over-inflation and barotrauma, thereby improving the safety and effectiveness of ventilation in resuscitation procedures.
Implementation Method 1
A patient valve with integrated linear or dial manometers that measure both inhalation and exhalation pressures
Implementation Method 2
combined with a pressure relief valve, to prevent over-inflation and ensure safe ventilation pressures
Data Source
AI summary
A manual resuscitator apparatus having a patient valve includes a housing having a first port for connection to ventilator bag, a second port for connection to a patient mask and a third port for an atmospheric vent. An air channel is configured integrally within the interior of the housing and a manometer is used for receiving air from the air channel. Either a linear or dial manometer is formed as a portion of the housing so the clinician can read both patient inhalation pressure from the first port and patient exhalation pressure from the second port.