Ventilation Leak Component With Air-Entrainment Ports for Quiet Breathing
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Solution Overview
Problem
Conventional leakage components in patient respiratory ventilation systems face issues such as excessive gas leakage during inspiration, noise, high flow rates leading to humidification problems, expensive and prone-to-failure valves, and lack of adjustability, which affect the efficiency and comfort of gas delivery.
Innovation Solution
A leakage component with a tubular housing and multiple leakage ports that entrain ambient air to decelerate fluid flow, incorporating a ball joint and socket coupling for adjustability, and a fluid diversion member to direct flows effectively, reducing noise and gas leakage during inspiration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional leakage components are used to allow exhaled gases to be cleared, then carbon dioxide rebreathing is prevented, but excessive gas leakage occurs during inspiration
Solution Approach 1:
The leakage component uses a flexible diaphragm that dynamically responds to pressure changes in the breathing circuit. During expiration, the diaphragm deflects to open leakage ports for CO2 clearance. During inspiration, the diaphragm returns to its original position to close the ports and prevent gas leakage. This dynamic behavior allows the system to automatically adapt to different breathing phases without external control.
Solution Approach 2:
The leakage component operates autonomously by utilizing the natural pressure variations in the breathing circuit during patient respiration. The diaphragm's deflection is driven solely by the pressure differential between expiration and inspiration phases, eliminating the need for external actuators, power sources, or control systems. The component self-regulates gas flow based on the breathing cycle.
2Object-affected harmful factors
If high flow rates are used to clear exhaled gases, then carbon dioxide rebreathing is prevented, but humidification problems occur
Solution Approach 1:
Instead of using high flow rates that cause excessive gas movement and humidification issues, the leakage component uses a controlled, moderate flow rate through the leakage ports. The diaphragm's partial deflection during expiration allows sufficient CO2 clearance while maintaining gentler flow conditions that prevent condensation and humidification problems in the breathing circuit.
3Object-affected harmful factors
If conventional leakage ports are used to clear exhaled gases, then carbon dioxide rebreathing is prevented, but excessive noise is generated
Solution Approach 1:
The leakage component features a localized sound-dampening structure positioned around the leakage ports. This structure modifies the local acoustic environment by providing acoustic absorption and diffusion, reducing the noise generated by gas flow through the ports while maintaining effective CO2 clearance functionality.
4Object-affected harmful factors
If conventional leakage components are used, then carbon dioxide rebreathing is prevented, but adjustability is limited
Solution Approach 1:
The leakage component incorporates a flexible diaphragm that naturally adjusts its deflection degree based on the pressure differential during different breathing phases and patient conditions. This dynamic characteristic provides inherent adaptability, allowing the leakage rate to automatically adjust to varying respiratory demands without requiring external adjustment mechanisms.
Solution Approach 2:
The system allows for adjustment of the diaphragm's mechanical properties (such as pre-tension or material characteristics) to change the pressure threshold at which the leakage ports open. By modifying these physical parameters, the leakage component can be tuned to different patient requirements, providing versatility in controlling the leakage rate while maintaining CO2 clearance functionality.
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 solution effectively reduces noise and gas leakage, improves adjustability, and minimizes the need for high flow rates, enhancing the efficiency and comfort of gas delivery while preventing rebreathing of carbon dioxide during exhalation.
Implementation Method 1
fluid flow through the plurality of leakage ports is configured to entrain ambient air into the fluid flow exiting the plurality of leakage ports to decelerate the fluid flow
Data Source
AI summary
Leakage components are described herein. The leakage component includes a first tubing housing and a plurality of leakage ports. The first tubular housing defines a first flow path between a first end portion and a second end portion. The plurality of leakage ports are formed in the first housing and in fluid communication with the first flow path. The fluid flow through the plurality of leakage ports is configured to entrain ambient air into the fluid flow exiting the plurality of leakage ports to decelerate the fluid flow.