CN220588726U - Oxygen concentration detection device - Google Patents
Oxygen concentration detection device Download PDFInfo
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- CN220588726U CN220588726U CN202321439695.4U CN202321439695U CN220588726U CN 220588726 U CN220588726 U CN 220588726U CN 202321439695 U CN202321439695 U CN 202321439695U CN 220588726 U CN220588726 U CN 220588726U
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Abstract
The application provides an oxygen concentration detection device, this oxygen concentration detection device is connected with breathing gas circuit in order to detect the gaseous oxygen concentration in this breathing gas circuit, and it includes: an oxygen concentration sensor for detecting a gas oxygen concentration in the breathing circuit; the valve body is arranged between the breathing gas circuit and the oxygen concentration sensor, and the opening and closing states of the valve body are switched to set whether the gas in the breathing gas circuit can pass through the valve body and reach the oxygen concentration sensor; the pump body is arranged between the valve body and the oxygen concentration sensor, and the air in the breathing gas path is sent into the oxygen concentration sensor through air suction; and the switch module is electrically connected with the valve body and the pump body and is used for switching the valve body to be opened and closed and the pump body to be started and stopped according to the state of the breathing gas circuit. The method can ensure that the gas detected by the oxygen concentration sensing device is the gas of the inspiration phase in the whole respiration phase, and improves the detection effectiveness.
Description
Technical Field
The application belongs to the field of respiratory medical equipment, and particularly relates to an oxygen concentration detection device.
Background
The nasal high flow humidification oxygen therapy (high-flow nasal cannula oxygen therapy, HFNC) refers to a treatment mode for continuously providing high flow (8-80L/min) inhaled gas which can regulate and control and relatively keep constant oxygen inhalation concentration (21% -100%), temperature (31-37 ℃) and humidity for patients through high flow nasal obstruction. The nasal high flow humidification oxygen therapy is a totally new respiratory therapy and respiratory support system, breaks through the defect that the traditional oxygen therapy mode can not provide preset oxygen concentration and can not perform good temperature and humidity on inhaled gas, and optimizes the comfort and tolerance of patients.
At present, there are two methods for controlling the oxygen concentration of high-flow equipment, one is to adjust the oxygen flow through a float type oxygen flowmeter to control the oxygen concentration, and the method can not preset the oxygen concentration and can only generate the actual oxygen concentration by adjusting the oxygen flow; one is that the miniature proportional valve and the ultrasonic oxygen concentration sensor realize the control of the oxygen concentration, and the oxygen concentration can be preset. Because the two methods continuously supply oxygen in the whole respiratory cycle process, the oxygen utilization rate is low, the consumption is high, and the treatment cost of a patient is greatly increased, an oxygen-saving scheme is designed, namely, the patient opens oxygen through a proportional valve when inhaling, so that the patient can inhale the oxygen; during expiration, the output of the oxygen flow is reduced by controlling the proportional valve, so that the waste of oxygen of a patient in the expiration stage is avoided. However, this regimen does not evaluate whether the therapeutic effect is the same as high flow rate during use.
Disclosure of Invention
In order to evaluate whether the therapeutic effect of the oxygen-saving regimen is the same as that of the high-flow device, the present application provides an oxygen concentration detection apparatus and an oxygen concentration detection system.
Wherein, oxygen concentration detection device is connected with breathing gas circuit in order to detect the gaseous oxygen concentration in this breathing gas circuit, and it includes:
an oxygen concentration sensor for detecting a gas oxygen concentration in the breathing circuit;
the valve body is arranged between the breathing gas circuit and the oxygen concentration sensor, and the opening and closing states of the valve body are switched to set whether the gas in the breathing gas circuit can pass through the valve body and reach the oxygen concentration sensor;
the pump body is arranged between the valve body and the oxygen concentration sensor, and the gas in the breathing gas path is sent into the oxygen concentration sensor through air suction; and
and the switch module is electrically connected with the valve body and the pump body and is used for switching the valve body to be opened and closed and the pump body to be started and stopped according to the state of the breathing gas circuit.
Preferably, the valve body is an electromagnetic valve; and/or the pump body is a diaphragm pump.
Preferably, when the breathing circuit is in the breathing phase, the switch module enables the valve body to be in a closed state and enables the pump body to be in a stop state; when the breathing gas circuit is in a gas suction phase, the switch module enables the valve body to be in an opening state and enables the pump body to be in a starting state.
According to the switching valve body and the pump body start-stop device, the gas detected by the oxygen concentration sensing device can be guaranteed to be the gas of the inspiration phase in the whole respiration phase according to the state of the respiration gas circuit, and the detection effectiveness is improved.
It should be noted that, the control method of switching the opening and closing of the valve body and the opening and closing of the pump body according to the state of the breathing circuit belongs to the existing mature technology, and is not the improvement content of the application. However, it is the innovation of the present application to apply the existing control method to the oxygen concentration detection device to ensure that the gas detected by the oxygen concentration sensing device is the inspiratory phase gas throughout the respiratory phase.
Drawings
Fig. 1 is a schematic configuration diagram of an oxygen concentration detection system according to an embodiment of the present application, wherein a solid line indicates a gas flow direction and a broken line indicates an electric signal.
Detailed Description
In order to test whether the treatment effect of the oxygen-saving scheme is the same as that of the high-flow equipment, an oxygen concentration detection device is designed, and whether the oxygen concentration of the gas-absorbing phase meets the set oxygen concentration only needs to be monitored by the device, so that the treatment effect of the oxygen-saving scheme is verified to be the same as that of the high-flow equipment.
The oxygen concentration detection device comprises a core controller, an electromagnetic valve, a diaphragm pump and an oxygen concentration sensor. When the core controller receives the patient inhalation start signal, outputting a control signal to the solenoid valve and the diaphragm pump, the solenoid valve opening and the diaphragm pump starting to draw the gas of the inhalation phase into the oxygen concentration sensor; when the expiration start signal is received, the core controller closes the proportional valve and the diaphragm pump to prevent the gas in the expiration phase from entering the oxygen concentration sensor, and ensures that the gas detected by the oxygen concentration sensor is the gas in the inspiration phase in the whole expiration phase.
Fig. 1 is a connection diagram of an oxygen concentration detection apparatus. Among them, the active lung (preferably ASL 5000) is a device simulating the operation of the patient's lung, mainly used in the development of ventilators, which is used for testing ventilators by simulating the breathing of the patient.
As can be seen from fig. 1, the test flow of the oxygen concentration detection apparatus is that the high-flow device outputs a constant flow of air-oxygen mixture gas, and the air-oxygen mixture gas enters the active lung (preferably ASL 5000) through the humidification tank, the heating pipeline, the nasal catheter and the simulated nose. In the inspiratory phase, monitoring the oxygen concentration of the inspiratory phase by an active pulmonary control device; in the exhalation phase, the control device prevents the flow of the inhalation phase from entering the oxygen sensor, and ensures that the oxygen concentration sensor monitors the oxygen concentration of the inhalation phase. In addition, a signal output (Digital Out) port of the active lung may output a signal of the respiratory phase and the respiratory phase, the respiratory phase being at a low level and the respiratory phase being at a high level. Therefore, the scheme directly controls the oxygen concentration detection device through the breathing phase signal output by the active lung.
The setting parameters of the active lung with model ASL5000 are as follows: respiratory rate settings: 6BPM, 10BPM, 15BPM, 20BPM. The active lung test script is: lung model: one component; patient breathing model: sinusidial halo-Wave; incoease: 32; hold:0; release 23; peak Flow 20.
It should be noted that, the oxygen-saving scheme is only aimed at respiratory equipment outputting constant flow, such as nasal high flow humidification oxygen therapy, and is only applicable to the respiratory frequency stabilization scene of patients; and detecting whether the oxygen concentration of the gas-absorbing phase of the patient meets the set oxygen concentration or not, and ensuring that the treatment effect of the oxygen-saving scheme is the same as that of the high-flow equipment.
The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in detail.
Moreover, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be considered as the disclosure of the present utility model.
Claims (2)
1. An oxygen concentration detection apparatus connected to a breathing circuit for detecting a gaseous oxygen concentration in the breathing circuit, the oxygen concentration detection apparatus comprising:
an oxygen concentration sensor for detecting a gas oxygen concentration in the breathing circuit;
the valve body is arranged between the breathing gas circuit and the oxygen concentration sensor, and the opening and closing states of the valve body are switched to set whether the gas in the breathing gas circuit can pass through the valve body and reach the oxygen concentration sensor;
the pump body is arranged between the valve body and the oxygen concentration sensor, and the gas in the breathing gas path is sent into the oxygen concentration sensor through air suction; and
the switch module is electrically connected with the valve body and the pump body and is used for switching the valve body to be opened and closed and the pump body to be started and stopped according to the state of the breathing gas circuit; wherein,
when the breathing gas circuit is in a breathing gas phase, the switch module enables the valve body to be in a closed state and enables the pump body to be in a stop state; when the breathing gas circuit is in a gas suction phase, the switch module enables the valve body to be in an opening state and enables the pump body to be in a starting state.
2. The oxygen concentration detection apparatus according to claim 1, wherein the valve body is a solenoid valve; and/or the pump body is a diaphragm pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439695.4U CN220588726U (en) | 2023-06-07 | 2023-06-07 | Oxygen concentration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439695.4U CN220588726U (en) | 2023-06-07 | 2023-06-07 | Oxygen concentration detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220588726U true CN220588726U (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321439695.4U Active CN220588726U (en) | 2023-06-07 | 2023-06-07 | Oxygen concentration detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN220588726U (en) |
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2023
- 2023-06-07 CN CN202321439695.4U patent/CN220588726U/en active Active
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