CN111110980A - Humidification adjusting method of respiratory support equipment and respiratory support equipment - Google Patents
Humidification adjusting method of respiratory support equipment and respiratory support equipment Download PDFInfo
- Publication number
- CN111110980A CN111110980A CN201911425266.XA CN201911425266A CN111110980A CN 111110980 A CN111110980 A CN 111110980A CN 201911425266 A CN201911425266 A CN 201911425266A CN 111110980 A CN111110980 A CN 111110980A
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- Prior art keywords
- respiratory support
- temperature
- support equipment
- heating plate
- humidification
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
- A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2209/00—Ancillary equipment
- A61M2209/02—Equipment for testing the apparatus
Abstract
The invention discloses a humidification adjusting method for a respiratory support device. The invention also discloses a respiratory support apparatus. Compared with the prior art, the humidification adjusting method of the respiratory support equipment and the respiratory support equipment have better humidification effect and effectively avoid the generation of condensed water.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a humidification adjusting method of a respiratory support device and the respiratory support device.
Background
When the respiratory support equipment such as a high-flow respiratory humidification therapeutic apparatus works, constant flow can be output according to the flow set by a user, and gas passing through a respiratory pipeline is heated and humidified according to the humidification amount set by the user.
At present, the humidification of high-flow equipment depends on a heating plate to heat water in a water box to form water vapor, and the water vapor is taken out by pressurized gas generated by a turbine to achieve the aim of humidification.
The technical scheme at the present stage is to control the constant temperature of the heating plate, and adjust the temperature of the heating plate according to different demands of users on the humidifying amount. After the amount of humidification is determined, the temperature of the heating plate is determined, and the temperature of the heating plate can not change no matter how the environment changes in the later use process.
The prior art makes the hot plate temperature invariable, and control is although simple, but in the in-service use, if the ambient humidity is very high originally, perhaps the temperature is very low, then will appear the humidifying volume too big to produce a large amount of condensation, the phenomenon of comdenstion water blowout or jam breathing pipe will appear when the user uses, thereby influence the use. On the other hand, the output flow also influences the humidification effect, when the flow is large, more water vapor is brought out, the humidification is better, and otherwise, the humidification is worse.
Therefore, there is a need to provide a new humidification adjustment method for a respiratory support apparatus and a respiratory support apparatus to solve the above technical problems.
Disclosure of Invention
The invention aims to overcome the technical problems and provide a humidification adjusting method of a respiratory support device and the respiratory support device, which have better humidification effect and effectively avoid the generation of condensed water.
The invention provides a humidification adjusting method of a respiratory support device, which comprises the following steps:
acquiring the water vapor amount in the use environment of the respiratory support equipment through an environment humidity sensor to obtain absolute humidity data;
acquiring gas temperature and humidity data of an air outlet of the respiratory support equipment through a temperature and humidity sensor, wherein the gas temperature and humidity data are 0.0464x according to y2-1.1805x +24.005 obtaining the water vapor amount y of saturated air at the current temperature, x being the current temperature of the gas at the outlet of the respiratory support apparatus;
recording the current humidity of an air outlet of the respiratory support equipment as Y, recording M as Y-Y, and setting the current flow as F, and calculating the steam amount required to be supplemented per minute under the current flow F according to Q as F;
testing the evaporation volume per minute at different heating plate temperatures, and storing the recorded data in the respiratory support equipment;
when the respiratory support device detects that M is less than 0 and Y/Y is less than 95%, the temperature of the heating plate is increased by 1 ℃, the detection is carried out after waiting for 5 minutes until Y/Y is greater than 95%, when the respiratory support device detects that M is 0 or Y/Y is greater than 98%, the temperature of the heating plate is decreased by 1 ℃, and the detection is carried out after waiting for 5 minutes.
Preferably, the recorded data is stored in a tabular form on the respiratory support apparatus.
Preferably, the table begins at 10LPM, shifts every 5LPM, and up to 70 LPM.
Preferably, the heating plate temperature in the table is from 45 ℃ with one shift every 1 ℃ up to 85 ℃.
The invention also provides a respiratory support device which uses the respiratory support device humidification adjusting method.
Compared with the prior art, the humidification adjusting method of the respiration support equipment and the respiration support equipment can automatically perform humidification adjustment in the using process of the equipment, have better humidification effect and can effectively avoid the generation of condensed water.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will now be described more fully with reference to the following examples. Although the preferred embodiments of the present invention have been shown and described. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention provides a humidification adjusting method of a respiratory support device, which comprises the following steps:
acquiring the water vapor amount in the use environment of the respiratory support equipment through an environment humidity sensor to obtain absolute humidity data;
acquiring gas temperature and humidity data of an air outlet of the respiratory support equipment through a temperature and humidity sensor, wherein the gas temperature and humidity data are 0.0464x according to y2-1.1805x +24.005 obtaining the water vapor amount y of saturated air at the current temperature, x being the current temperature of the gas at the outlet of the respiratory support apparatus;
recording the current humidity of an air outlet of the respiratory support equipment as Y, recording M as Y-Y, and setting the current flow as F, and calculating the steam amount required to be supplemented per minute under the current flow F according to Q as F;
testing the evaporation volume per minute at different heating plate temperatures, and storing the recorded data in the respiratory support equipment;
when the respiratory support device detects that M is less than 0 and Y/Y is less than 95%, the temperature of the heating plate is increased by 1 ℃, the detection is carried out after waiting for 5 minutes until Y/Y is greater than 95%, when the respiratory support device detects that M is 0 or Y/Y is greater than 98%, the temperature of the heating plate is decreased by 1 ℃, and the detection is carried out after waiting for 5 minutes.
In the present embodiment, the recorded data is stored in the form of a table in the respiratory support apparatus.
Specifically, the table begins at 10LPM, and shifts every 5LPM until 70 LPM.
Specifically, the heating plate temperature in the table starts at 45 ℃ and is shifted every 1 ℃ to 85 ℃.
The following specific examples:
the moisture content of air is uncertain and varies widely. When humidification is carried out, the amount of existing water vapor in the use environment needs to be acquired firstly, and the amount of existing water vapor is acquired by the environment humidity sensor, so that absolute humidity data is acquired.
On the other hand, the maximum amount of water vapor that can be contained in the air is determined by the temperature of the air, the higher the air temperature is, the more water vapor that can be contained in the air is, at this time, to achieve 100% humidification, more water vapor needs to be provided to the output gas, and the lower the air temperature is, the less water vapor that can be contained in the air will be, at this time, if high water vapor is still input to the air, the saturation value of the water vapor that is contained in the air will be exceeded, so that condensation is formed, and therefore, the supply of water vapor needs to be reduced, and condensation is avoided. This relies in part on a temperature sensor to acquire gas temperature data at the outlet of the respiratory support apparatus.
According to the above analysis, the amount of saturated water vapor that can be achieved in air is different at different temperatures. The respiratory support equipment used in the embodiment generally requires to output gas at 30-38 ℃, so that a saturated water vapor value at a corresponding temperature needs to be obtained, and according to a table look-up result, the data at the section can be fit to the following formula for use: y is 0.0464x2-1.1805x +24.005, wherein x represents outgasTemperature of the mouth gas, y is the water vapor of saturated air at the current temperature, and has the unit of g/m3。
In order for the respiratory support device to adaptively adjust the amount of water vapor emitted, it is also necessary to know how much water vapor should be replenished into the air. In this embodiment, a temperature and humidity integrated sensor is adopted at the air outlet, the current humidity detected by the sensor is recorded as Y, the difference between Y and Y is the density of the water vapor to be supplemented, and the value is constantly less than or equal to 0. When it equals 0, it indicates that the air is saturated or supersaturated with water vapor. Therefore, in order to distinguish whether the saturation is excessive, the target of the embodiment is set to maintain 100% > Y/Y > 95%, so that the relative humidity above 95% can be guaranteed, and the saturation is not avoided, thereby effectively avoiding condensation.
And recording M as Y-Y, wherein the current flow is F, and Q as F M represents the amount of the water vapor required to be supplemented per minute under the current flow F, and the unit is mg/min.
Next, this example will test the amount of evaporation per minute at different heater plate temperatures per constant flow, such as 60℃ at a constant flow rate of 50LPM, where the amount of evaporation per minute is M50-60, and M50-70 at a constant flow rate of 50LPM, and 70℃ at the heater plate. The recorded data will be stored in the respiratory support device in the form of a table in which the flow starts at 10LPM, and steps up to 70LPM every 5 LPM; the temperature of the heating plate was started at 45 ℃ and was shifted every 1 ℃ to 85 ℃.
During use of the respiratory support device, when the respiratory support device detects that M <0 and Y/Y < 95%, the heater plate temperature will be raised by 1 deg.C, waiting 5 minutes before proceeding with the detection until Y/Y > 95%. When M is detected to be 0 or Y/Y > 98%, the respiratory support apparatus lowers the heater plate temperature by 1 ℃ and waits for 5 minutes before performing the test. During the entire use process, the respiratory support device will repeat the above process continuously, thereby ensuring sufficient humidification and no condensation.
The invention also provides a respiratory support device which uses the respiratory support device humidification adjusting method.
Compared with the prior art, the humidification adjusting method of the respiration support equipment and the respiration support equipment can automatically perform humidification adjustment in the using process of the equipment, have better humidification effect and can effectively avoid the generation of condensed water.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A method of humidification adjustment for a respiratory support device, the method comprising:
acquiring the water vapor amount in the use environment of the respiratory support equipment through an environment humidity sensor to obtain absolute humidity data;
acquiring gas temperature and humidity data of an air outlet of the respiratory support equipment through a temperature and humidity sensor, wherein the gas temperature and humidity data are 0.0464x according to y2-1.1805x +24.005 obtaining the water vapor amount y of saturated air at the current temperature, x being the current temperature of the gas at the outlet of the respiratory support apparatus;
recording the current humidity of an air outlet of the respiratory support equipment as Y, recording M as Y-Y, and setting the current flow as F, and calculating the steam amount required to be supplemented per minute under the current flow F according to Q as F;
testing the evaporation volume per minute at different heating plate temperatures, and storing the recorded data in the respiratory support equipment;
when the respiratory support device detects that M is less than 0 and Y/Y is less than 95%, the temperature of the heating plate is increased by 1 ℃, the detection is carried out after waiting for 5 minutes until Y/Y is greater than 95%, when the respiratory support device detects that M is 0 or Y/Y is greater than 98%, the temperature of the heating plate is decreased by 1 ℃, and the detection is carried out after waiting for 5 minutes.
2. The method of claim 1, wherein the recorded data is stored in a tabular form on the respiratory support apparatus.
3. The method of claim 2, wherein the flow rate in the table is from 10LPM, first every 5LPM, and up to 70 LPM.
4. The method of claim 2, wherein the tabular heating plate temperature starts at 45 ℃ and steps from 1 ℃ to 85 ℃.
5. A respiratory support apparatus, wherein the respiratory support apparatus uses the respiratory support apparatus humidification adjustment method of any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911425266.XA CN111110980A (en) | 2019-12-31 | 2019-12-31 | Humidification adjusting method of respiratory support equipment and respiratory support equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911425266.XA CN111110980A (en) | 2019-12-31 | 2019-12-31 | Humidification adjusting method of respiratory support equipment and respiratory support equipment |
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| CN111110980A true CN111110980A (en) | 2020-05-08 |
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| CN201911425266.XA Pending CN111110980A (en) | 2019-12-31 | 2019-12-31 | Humidification adjusting method of respiratory support equipment and respiratory support equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112220998A (en) * | 2020-10-26 | 2021-01-15 | 联赢医疗科技有限公司 | Breathing machine system |
| CN112220999A (en) * | 2020-10-26 | 2021-01-15 | 联赢医疗科技有限公司 | Self-adaptive respirator system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022088548A1 (en) * | 2020-10-26 | 2022-05-05 | 联赢医疗科技有限公司 | Ventilator system |
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