PEEP Retention Valve Balloon Occlusion Mechanism
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Solution Overview
Problem
Current methods for maintaining positive end expiratory pressure (PEEP) in medical patients, particularly when using endotracheal tubes, are inadequate as they often result in loss of PEEP and aerosolization of infectious airborne particles during ventilator disconnection, and traditional clamping methods can damage the tubes.
Innovation Solution
A positive end expiratory pressure retention valve with a balloon housed in a chamber that occludes the air flow when inflated, preventing air leakage and aerosolization, while allowing for secure connection and disconnection from ventilator circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clamping the ETT with hemostats to retain PEEP, then PEEP is maintained during ventilator disconnection, but the tube is damaged and aerosolization occurs
Solution Approach 1:
The patent introduces a valve assembly as an intermediary device between the ventilator circuit and the ETT. This valve includes a balloon that can be inflated to occlude the air flow chamber, thereby retaining PEEP without directly clamping the ETT. The valve body with its air flow chamber provides a protective interface that prevents mechanical damage to the tube while maintaining the necessary pressure retention function.
Solution Approach 2:
The device segments the PEEP retention function from the ETT itself by creating a separate valve assembly with an independent balloon occlusion mechanism. This segmentation allows the retention function to be performed by the balloon in the valve body rather than by direct clamping of the ETT, thus protecting the tube from damage while maintaining reliability.
2Reliability
If clamping the ETT with hemostats to retain PEEP, then positive end expiratory pressure is maintained, but aerosolization of infectious particles occurs
Solution Approach 1:
The valve assembly acts as an intermediary sealing mechanism that prevents aerosolization. The balloon, when inflated, creates a seal within the air flow chamber that contains infectious particles. This intermediary sealing approach is gentler than direct clamping and effectively prevents aerosol generation while maintaining PEEP retention.
3Reliability
If traditional clamping method is used, then PEEP is retained, but the adapter comes out of the ETT
Solution Approach 1:
The valve assembly with its structured air flow chamber and balloon provides a stable intermediary connection point. The adapter connects to this valve assembly rather than directly to the ETT, creating a more stable configuration. The balloon occlusion mechanism is integrated into the valve body, providing a stable platform that prevents adapter disconnection while maintaining PEEP retention.
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 valve effectively retains PEEP and prevents aerosolization of airborne pathogens during ventilator disconnection, ensuring patient safety and reducing the risk of tube damage.
Implementation Method 1
A balloon house is connected to the tube house and houses a balloon in a balloon chamber connected to the air flow chamber. The balloon occludes the air flow chamber when inflated.
Data Source
AI summary
A positive end expiratory pressure retention valve has a tube house forming an air flow chamber between a first port connected to a medical air supply tube and a second port connected to a medical air supply source. A balloon house is connected to the tube house and houses a balloon in a balloon chamber connected to the air flow chamber. The balloon occludes the air flow chamber when inflated.