Breathing Device Carbon Dioxide Compensation
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Solution Overview
Problem
Existing ventilators cannot compensate for carbon dioxide in the body by adjusting the proportion of carbon dioxide in the supplied air, limiting their ability to provide therapeutic benefits for patients.
Innovation Solution
A breathing device with integrated air, low pressure oxygen, high pressure oxygen, and carbon dioxide source pipelines, along with a carbon dioxide flow regulation system, which mixes and adjusts the ratio of carbon dioxide and oxygen to form therapeutic gas for inhalation, using sensors and AI for dynamic regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing ventilators only provide mixed air-oxygen without carbon dioxide, then the device structure remains simple, but the ability to compensate for carbon dioxide in the patient's body is lost
Solution Approach 1:
The gas supply system is divided into separate pipelines for air, low pressure oxygen, high pressure oxygen, and carbon dioxide. Each pipeline is independently controlled with its own flow meters and valves, allowing precise adjustment of each gas component while maintaining overall system manageability through modular segmentation.
Solution Approach 2:
The ventilator system is designed to perform multiple functions: providing standard air-oxygen mixtures for routine ventilation, delivering high pressure oxygen for emergency situations, and supplying therapeutic gas with carbon dioxide for carbon dioxide compensation. This multi-functionality is achieved through a unified control system that can switch between different gas delivery modes.
2Reliability
If carbon dioxide gas is mixed with high pressure oxygen in a preset ratio, then carbon dioxide compensation is achieved, but the device complexity increases due to additional pipelines and control systems
Solution Approach 1:
The system incorporates sensors that monitor the patient's respiratory parameters and provide feedback to the control system. Based on this feedback, the control system automatically adjusts the carbon dioxide to oxygen ratio in real-time, ensuring accurate carbon dioxide compensation while reducing the need for complex manual adjustment mechanisms.
Solution Approach 2:
The system dynamically changes the concentration parameters of the therapeutic gas by adjusting the flow rates of carbon dioxide and high pressure oxygen through electronically controlled flow meters. This allows precise control of the carbon dioxide to oxygen ratio without requiring complex mechanical mixing devices.
3Adaptability or versatility
If multiple gas sources and pipelines are integrated, then carbon dioxide compensation function is enabled, but the device complexity and number of components increase
Solution Approach 1:
Multiple gas delivery functions are merged into a single integrated ventilator system. The air pipeline, low pressure oxygen pipeline, high pressure oxygen pipeline, and carbon dioxide pipeline all converge at a common mixing chamber and share a unified control system, reducing the need for separate standalone devices while maintaining functional independence of each gas source.
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
Enables effective carbon dioxide compensation in the body, preventing hyperventilation and providing therapeutic benefits without the need to collect exhaled carbon dioxide, enhancing respiratory support for patients.
Implementation Method 1
carbon dioxide gas from a carbon dioxide source and the high pressure oxygen in the high pressure oxygen source pipeline are mixed through the carbon dioxide source pipeline and form therapeutic gas
Implementation Method 2
the ratio of oxygen to the carbon dioxide gas in the therapeutic gas is adjusted through adjusting a flow of the high pressure oxygen and the carbon dioxide gas by the first and second flow control valves
Implementation Method 3
a first pressure sensor is provided on the low pressure oxygen source pipeline and is located between the first check valve and the oxygen flow sensor for measuring a pressure of the low pressure oxygen in the low pressure oxygen source pipeline; a third pressure sensor and a second flow control valve are provided on the carbon dioxide source pipeline in sequence, the third pressure sensor measures a pressure of the carbon dioxide gas in the carbon dioxide source pipeline
Implementation Method 4
a first filter is provided on the air source pipeline, a second filter and a first check valve are provided on the low pressure oxygen source pipeline; a third filter, a first flow control valve, and a directional valve are provided on the high pressure oxygen source pipeline; a fourth filter, a third pressure sensor and a second flow control valve are provided on the carbon dioxide source pipeline in sequence
Data Source
AI summary
A breathing device with carbon dioxide compensation function includes an air source pipeline, a low pressure oxygen source pipeline, a high pressure oxygen source pipeline, a carbon dioxide source pipeline, a gas supply pipeline all of which are set in a ventilator and corresponding to an air source, a lower pressure oxygen source, a high pressure oxygen source and a carbon dioxide source respectively; and a breathing pipeline which is set outside the ventilator. The breathing device further includes a carbon dioxide flow regulation system for detecting and regulating carbon dioxide in the breathing gas which is transported by the breathing device for patients.