Manual Resuscitator Ventilation Control With Low-Power Valve Switching
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Solution Overview
Problem
Existing artificial resuscitators face challenges in controlling ventilation volume effectively, making it difficult to maintain appropriate ventilation for extended periods, even for trained medical personnel.
Innovation Solution
An artificial resuscitator device equipped with a gas control valve, flow sensor, and a three-way valve, controlled by a control module that adjusts the gas path based on real-time ventilation volume measurements to ensure the ventilation volume matches the patient's requirements, using low-power, small-aperture three-way valves and diaphragm assemblies to manage the exhaust pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation of the artificial resuscitator is used, then the device remains simple and portable, but the ventilation volume cannot be effectively controlled
Solution Approach 1:
The device automatically measures ventilation volume through the sensor and adjusts the exhaust pipe opening/closing through the control module, enabling self-service operation that maintains simplicity while achieving precise control without requiring manual adjustment skills
Solution Approach 2:
The patent replaces manual mechanical control with an automated control system comprising a sensor for detecting ventilation volume and a control module for actuating the exhaust pipe, substituting human operation with an electronic control system that provides precise measurement and adjustment
2Measurement precision
If automated control systems are added to control ventilation volume, then ventilation precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential control functions (ventilation volume sensing and exhaust pipe control) from complex automated systems, implementing a minimal automated control system that provides precise ventilation control without unnecessary complexity
Solution Approach 2:
The control module serves multiple functions: it receives sensor signals, processes ventilation volume data, determines opening/closing timing of the exhaust pipe, and actuates the control valve, consolidating multiple control functions into a single integrated component to reduce overall system complexity
3Measurement precision
If continuous monitoring of ventilation volume is implemented, then ventilation accuracy is improved, but power consumption increases
Solution Approach 1:
The control module monitors ventilation volume during the breathing process and actuates the exhaust pipe at specific periodic intervals (opening during inhalation, closing during exhalation), providing continuous monitoring functionality while consuming power only during critical measurement and actuation moments rather than continuously
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 device provides controlled and quantitative ventilation, reducing power consumption, preventing excessive ventilation, and maintaining portability while ensuring safety and accuracy, aligning with patient tidal volumes.
Implementation Method 1
a flow sensor set on the exhaust pipe of the respirator
Implementation Method 2
controlling whether the three-way valve switches the gas path based on the current ventilation volume to open or close the exhaust pipe through the gas control valve
Implementation Method 3
a three-way valve on the connecting tube that selectively communicates with the control side of the gas control valve, and a pressure relief opening on one side of the three-way valve that selectively communicates with the control side of the gas control valve
Data Source
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AI summary
The present invention relates to the technical field of medical devices and discloses a method and an artificial resuscitator device for controllable ventilation volume. It includes: a gas control valve and a flow sensor set on the exhaust pipe of the respirator; a connecting tube branching off the exhaust pipe, with a three-way valve on the connecting tube that selectively communicates with the control side of the gas control valve, and a pressure relief opening on one side of the three-way valve that selectively communicates with the control side of the gas control valve; a control module that obtains the ventilation volume of the respirator based on the gas flow detected by the flow sensor and controls whether the three-way valve switches the gas path according to the ventilation volume, to open or close the exhaust pipe through the gas control valve. By using the gas control valve and the three-way valve to form a switch valve for controlling the opening or closing of the exhaust pipe, a low-power, small-aperture three-way valve is chosen over high-flow, high-power consumption valves. The control module indirectly controls the opening and closing of the gas control valve by controlling the three-way valve, thereby achieving quantified ventilation while retaining the compact and portable advantages of the artificial resuscitator.