Breathing Mask Emergency Valve Pressure Coordination
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Solution Overview
Problem
Existing breathing masks with only an exhalation and inhalation valve face challenges in ensuring accurate coordination of pressure thresholds for the inhalation and emergency breathing valves, leading to insufficient breathing gas supply when the volume flow of the breathing gas supply is lower than the patient's demand.
Innovation Solution
Designing the closing element of the emergency breathing valve as a separate component allows for independent selection of material and elastic properties, enabling precise setting of the pressure threshold at which it opens, thereby ensuring accurate coordination with the inhalation valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the closing element of the emergency breathing valve is designed as a separate component, then the manufacturing precision of the pressure threshold setting is improved, but the device complexity increases
Solution Approach 1:
The closing element is designed as a separate component from the mask body and other valve elements. This segmentation allows independent manufacturing and precise control of the closing element's elastic properties, enabling accurate pressure threshold setting for the emergency breathing valve without affecting other components. The separate closing element can be optimized specifically for its function while maintaining overall system integration.
2Reliability
If the closing element is made with specific flexible material properties, then the reliability of breathing gas supply is improved, but the ease of manufacture decreases
Solution Approach 1:
The closing element is designed with specific elastic properties and flexibility parameters that allow it to respond reliably to pressure changes. By carefully selecting and controlling these material parameters, the closing element ensures accurate opening and closing behavior at predetermined pressure thresholds, guaranteeing reliable breathing gas supply while maintaining manufacturability through standardized material specifications.
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
This solution ensures that the emergency breathing valve opens only when necessary, preventing unnecessary gas supply through the emergency valve and ensuring the patient receives adequate breathing gas, even when the primary supply is insufficient.
Implementation Method 1
the closing element is designed to have such a flexibility that it is deformable between an open position, in which the closing surface is located at a spaced location from the diaphragm element, so that a flow of gas through the opening is allowed, and a closed position, in which the closing surface is in contact with the diaphragm element
Implementation Method 2
the emergency breathing valve is adapted such that it opens when the pressure in the cavity is below the pressure of the atmosphere surrounding the breathing mask by a preset value
Data Source
AI summary
A breathing mask has a mask body surrounding a cavity that is open towards one side and is intended for coming into contact with a human face around the mouth and/or nose. A valve arrangement is provided in the mask body with an inspiration valve, for controlling the flow of gas from a port for a breathing gas feed device for providing a breathing gas into the cavity, and an exhalation valve for controlling the flow of gas from the cavity into the surrounding atmosphere. An emergency breathing valve, controlling gas flow from the atmosphere surrounding the breathing mask into the cavity, has a pressure threshold, to allow gas flow, that is lower than an inhalation valve pressure threshold. The pressure thresholds at which the respective inhalation valve and the emergency breathing valve open are coordinated by the closing element being designed as a separate component of the valve arrangement.