CN112169100A - Method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment - Google Patents

Method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment Download PDF

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CN112169100A
CN112169100A CN202011030305.9A CN202011030305A CN112169100A CN 112169100 A CN112169100 A CN 112169100A CN 202011030305 A CN202011030305 A CN 202011030305A CN 112169100 A CN112169100 A CN 112169100A
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time
real
blood oxygen
oxygen concentration
oxygen saturation
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戴征
黄皓轩
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Hunan Micomme Zhongjin Medical Technology Development Co Ltd
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Hunan Micomme Zhongjin Medical Technology Development Co Ltd
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Priority to PCT/CN2020/119256 priority patent/WO2022061955A1/en
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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
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/20—Blood composition characteristics
    • A61M2230/205—Blood composition characteristics partial oxygen pressure (P-O2)

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  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention relates to a method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment. A method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment comprises an oxygen concentration increasing process and comprises the following steps: s11, the high-flow equipment increases the oxygen concentration of the gas delivery by a first preset proportion on the basis of the current output concentration and continues for a first preset time; s12, judging whether the real-time blood oxygen saturation is in a rising state or not; s13, the high-flow device judges whether the real-time blood oxygen saturation rises back within a second preset time; s14, the high-flow device judges whether the real-time blood oxygen saturation level does not fall back within a third preset time; s15, the high flow device detects the real-time blood oxygen saturation of the user in real time. The invention enables the equipment to automatically adjust the input oxygen concentration by monitoring the change of the real-time oxyhemoglobin saturation, gradually improves the oxygen concentration of the gas transmission when the real-time oxyhemoglobin saturation does not reach the standard or is reduced, and enables the real-time oxyhemoglobin saturation to reach the standard and recover.

Description

Method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment
Technical Field
The invention relates to respiratory support equipment, in particular to a method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment.
Background
When the high-flow equipment works, a user sets a desired flow rate and oxygen concentration, and then the equipment provides a constant flow rate to deliver the air-oxygen mixed gas to the user end at the set flow rate value. And at the user end, a nasal oxygen tube is adopted to receive the gas transmitted by the equipment. Typically, during use, if the user's blood oxygen saturation level is not satisfactory, medical personnel are required to manually adjust the oxygen concentration to increase the blood oxygen saturation level.
Currently, all high-flow devices do not have a self-adaptive oxygen concentration regulation mechanism, and a user needs to pay attention to own monitoring parameters at any time and then manually regulate parameters on the device, such as: oxygen concentration, output flow size and the like. However, the monitored parameters of the user, such as the blood oxygen saturation index, are usually greatly influenced by the current environment, and for example, the blood oxygen saturation may fluctuate greatly before and after the user takes medicine, or the user may have obstructive apnea in a sleep state, which may cause a large change in blood oxygen. If manual adjustment is relied on completely, on one hand, there is a problem of timeliness, which may not be found by the user in the first time, and on the other hand, there is a problem of accuracy, and manual adjustment also requires a little attempt to find the most suitable parameter, and therefore, much time and effort are required for adjustment.
Patent document CN201811625392.5 discloses a breathing parameter adjusting method and device for a breathing support device, and the breathing support device, the method includes the following steps: during the ventilation process, acquiring basic information of a patient and respiratory parameters of a respiratory support device in real time, wherein the basic information of the patient at least comprises blood pressure, blood oxygen saturation and symptoms, and the respiratory parameters at least comprise: inspiratory oxygen concentration and positive end expiratory pressure; and adjusting the breathing parameters by adopting corresponding parameter adjusting strategies according to the basic information and the breathing parameters, wherein the parameter adjusting strategies comprise an acute respiratory distress syndrome adjusting strategy, a chronic obstructive pulmonary disease adjusting strategy, a hypotension adjusting strategy and a stretch index adjusting strategy. The invention can automatically, quickly and accurately adjust the parameters of the respiratory support equipment, thereby quickly correcting the hypoxia oximetry, facilitating the ventilation auxiliary treatment of patients and improving the off-line success rate and safety. But still does not solve the above problems.
Thus, the oxygen concentration adjustment techniques of the existing respiratory support devices are not sufficient and need to be improved and improved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a method for automatically adjusting oxygen concentration of a gas delivery device by a high flow device, so that the device automatically adjusts the input oxygen concentration, and controls a respiratory support device to automatically increase the oxygen concentration of the gas delivery when a decrease in blood oxygen saturation of a user is detected.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment comprises an oxygen concentration increasing process and comprises the following steps:
s11, the high-flow equipment increases the oxygen concentration of the gas delivery by a first preset proportion on the basis of the current output concentration and continues for a first preset time;
s12, detecting the real-time blood oxygen saturation of the user in real time by the high-flow device, judging whether the real-time blood oxygen saturation is in a rising state or not, and if not, executing a step S13; if yes, go to step S14;
s13, the high-flow device judges whether the real-time blood oxygen saturation rises back within a second preset time, if yes, the step S14 is executed; if not, go to step S15;
s14, the high-flow device judges whether the real-time blood oxygen saturation level does not fall back within a third preset time, if yes, the step S15 is executed after waiting for a fourth preset time; if not, go to step S15;
s15, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is smaller than the blood oxygen threshold value, the step S11 is executed.
Preferably, the first predetermined proportion is 1-3%.
Preferably, the method for automatically adjusting the oxygen concentration of the gas delivery by the high-flow device further comprises an oxygen concentration reduction process, and comprises the following steps:
s21, the high flow device judges whether the real-time blood oxygen saturation of the user is larger than the blood oxygen threshold value in the fifth preset time, if yes, the step S22 is executed; if not, go to step S25;
s22, the high-flow equipment reduces the oxygen concentration of the gas delivery by a second preset proportion on the basis of the current output concentration and continues for a sixth preset time;
s23, the high flow device judges whether the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value in a plurality of time periods, if so, the high flow device waits for a seventh preset time, and then the step S25 is executed; otherwise, go to step S24;
s24, the high-flow device increases the oxygen concentration of the gas delivery by the second preset proportion on the basis of the current output concentration, and after the seventh preset time, the step S25 is executed;
s25, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value, the step S21 is executed.
Preferably, the second predetermined proportion is 0.1-1%.
Preferably, the method for automatically adjusting the oxygen concentration of the gas delivery by the high-flow device further comprises the following steps:
s0, detecting the real-time blood oxygen saturation of the user by the high-flow equipment in real time, judging whether the real-time blood oxygen saturation is smaller than the blood oxygen threshold value within eighth preset time, and if so, executing a step S11; if not, step S21 is executed.
The preferable method for automatically adjusting the oxygen concentration of the gas transmission by the high-flow equipment uploads all the use data of a single user to a server, and the use data and the corresponding account are bound and stored;
the content of the usage data comprises oxygen concentration, blood oxygen saturation and blood oxygen saturation standard mark.
Preferably, in the method for automatically adjusting the oxygen concentration of the gas delivery by the high flow rate device, when the high flow rate device is turned on, a calculation formula of the initial oxygen concentration of the gas delivery is as follows:
Mb＝Mmin+a(Mmax-Mmin)；
wherein M isbIs the initial oxygen concentration; mmaxThe maximum oxygen concentration of the gas transmission is achieved in the last use process; mminThe minimum oxygen concentration of the gas transmission is realized in the last use process; a is an initial parameter.
Preferably, the method for automatically adjusting the oxygen concentration of the gas delivery by the high-flow device is used for enabling the oxygen saturation level of the blood of the user to reach the standard when the initial oxygen concentration is obtained.
Preferably, the method for automatically adjusting the oxygen concentration of the gas delivery by the high-flow device constructs a usage curve based on the oxygen concentration and the blood oxygen saturation of a single user according to the usage data; further comprising the steps of:
s10, comparing the real-time blood oxygen saturation detected by the high flow device on the use curve to obtain the oxygen concentration in the use data of which the blood oxygen saturation reaches the standard and the oxygen concentration difference corresponding to the real-time blood oxygen saturation is minimum, and executing the step S11 by taking the difference as a first adjustment proportion.
Preferably, in the method for automatically adjusting the oxygen concentration of the gas delivery by the high-flow device, the set proportion of the difference is used as an adjustment proportion value for first adjustment.
Compared with the prior art, the method for automatically adjusting the oxygen concentration of the gas transmission by the high-flow equipment provided by the invention has the following beneficial effects:
1) according to the invention, by monitoring the change of the real-time oxyhemoglobin saturation, the input oxygen concentration is automatically regulated by the equipment, and when the real-time oxyhemoglobin saturation does not reach the standard or is reduced, the oxygen concentration of the gas transmission is gradually increased, so that the real-time oxyhemoglobin saturation reaches the standard and is recovered;
2) when the real-time blood oxygen saturation reaches the standard or exceeds the blood oxygen threshold value, the oxygen concentration of the gas transmission is gradually reduced, and the lowest oxygen concentration capable of maintaining the current blood oxygen saturation is found;
3) according to the invention, the user does not need to spend much time and energy to adjust the oxygen concentration, and the optimal oxygen concentration data can be recorded after the oxygen concentration is automatically adjusted by the device, so that the user can have a reference basis when using the device next time.
Drawings
FIG. 1 is a flow chart illustrating a process for increasing oxygen concentration in a gas delivery in a method for automatically adjusting oxygen concentration in a gas delivery according to the present invention;
FIG. 2 is a flow chart of a process for reducing oxygen concentration in gas delivery in the method for automatically adjusting oxygen concentration in gas delivery according to the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a method for automatically adjusting oxygen concentration of gas transmission by high flow equipment, which comprises an oxygen concentration increasing process, comprising the steps of:
s11, the high-flow equipment increases the oxygen concentration of the gas delivery by a first preset proportion on the basis of the current output concentration and continues for a first preset time; preferably, the first predetermined proportion is 1% -3%, and more preferably 3%; the first predetermined time is preferably 3 to 10 minutes, and more preferably 5 minutes;
s12, detecting the real-time blood oxygen saturation of the user in real time by the high-flow device, judging whether the real-time blood oxygen saturation is in a rising state or not, and if not, executing a step S13; if yes, go to step S14; preferably, the device for detecting the real-time blood oxygen saturation of the user is a common device in the field, and is not described in detail; further, the method for determining the real-time blood oxygen saturation of the user by the high-flow device is also a common method in the field and is not described in detail;
s13, the high-flow device judges whether the real-time blood oxygen saturation rises back within a second preset time, if yes, the step S14 is executed; if not, go to step S15; preferably, the second predetermined time is 3 to 10 minutes, and more preferably 5 minutes;
s14, the high-flow device judges whether the real-time blood oxygen saturation level does not fall back within a third preset time, if yes, the step S15 is executed after waiting for a fourth preset time; if not, go to step S15; preferably, the third predetermined time is preferably 0.5 to 3 minutes, and further preferably 1 minute; meanwhile, the technical means for judging the real-time blood oxygen saturation falling by the high-flow equipment is also a common technical scheme in the field, and the details are not repeated;
s15, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is smaller than the blood oxygen threshold value, the step S11 is executed. Preferably, the blood oxygen threshold is 90% -98%, and more preferably 95%, which can be set according to the user's requirement.
Preferably, in this embodiment, the first predetermined ratio is 1 to 3%.
Specifically, when a user uses a high flow rate device (a type of respiratory support device), the blood oxygen saturation level is a key evaluation index, and generally, the blood oxygen saturation level is normal at 95% or more. However, each user still has differences according to different physiological conditions and use environments, so in the technical scheme of automatically adjusting the oxygen concentration of the gas transmission provided by the invention, the user is allowed to manually set the blood oxygen threshold value SS (i.e. the lowest blood oxygen saturation value which can be set by the user). And when the actual blood oxygen saturation is larger than the blood oxygen threshold SS, the user state is considered to be normal, otherwise, the user blood oxygen saturation is considered to be abnormal. The implementation first illustrates that when the real-time blood oxygen saturation SR of the user is smaller than the blood oxygen threshold SS, the specific process of the high flow device for increasing the oxygen concentration of the delivered gas is as follows:
when the real-time blood oxygen saturation SR < the blood oxygen saturation threshold SS, the high-flow device starts to time, if the real-time blood oxygen saturation SR is continuously lower than SS within 1 minute, it is determined that the blood oxygen saturation is decreased, and at this time, the device increases the output of the oxygen concentration by 2% based on the currently output oxygen concentration M0, i.e., M1 is M0+ 2%, where M1 is the increased oxygen concentration for gas delivery and M0 is the current oxygen concentration for gas delivery of the high-flow device, and since the data change of the blood oxygen saturation has a longer time lag under normal conditions, in order to avoid excessively and rapidly increasing the oxygen concentration, the scheme is designed to maintain the output of the M1 concentration for 5 minutes. And when the real-time blood oxygen saturation SR rises, continuously observing until the real-time blood oxygen saturation SR does not fall back after 1 minute, determining that the real-time blood oxygen saturation SR reaches stability, and restarting to judge the sizes of the real-time blood oxygen saturation SR and the blood oxygen threshold SS after five minutes. If the real-time blood oxygen saturation SR does not rise after 5 minutes, the real-time blood oxygen saturation SR is considered to slow rising due to insufficient oxygen concentration or the user's own reason, the device waits for 5 minutes again, and the real-time blood oxygen saturation SR does not rise after 5 minutes, and the device restarts the size judgment of the real-time blood oxygen saturation SR and the blood oxygen threshold SS.
Referring to fig. 2, as a preferred embodiment, the present embodiment further includes an oxygen concentration reduction process, including the steps of:
s21, the high flow device judges whether the real-time blood oxygen saturation of the user is larger than the blood oxygen threshold value in the fifth preset time, if yes, the step S22 is executed; if not, go to step S25; preferably, the fifth predetermined time is preferably 0.5 to 3 minutes, and further preferably 1 minute;
s22, the high-flow equipment reduces the oxygen concentration of the gas delivery by a second preset proportion on the basis of the current output concentration and continues for a sixth preset time; preferably, the second predetermined proportion is 0.1% -1%, and more preferably 0.5%; the sixth predetermined time is 3 to 10 minutes, and more preferably 5 minutes;
s23, the high flow device judges whether the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value in a plurality of time periods, if so, the high flow device waits for a seventh preset time, and then the step S25 is executed; otherwise, go to step S24; preferably, a plurality of said time periods are monitored in relation to a plurality of time periods, each of said time periods preferably being 3-10 minutes, more preferably 5 minutes; the seventh predetermined time is 3 to 10 minutes, and more preferably 5 minutes;
s24, the high-flow device increases the oxygen concentration of the gas delivery by the second preset proportion on the basis of the current output concentration, and after the seventh preset time, the step S25 is executed;
s25, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value, the step S21 is executed.
Preferably, in this embodiment, the second predetermined ratio is 0.1 to 1%.
Specifically, the high flow rate device detects real-time blood oxygen saturation SR of the user in real time, and when the real-time blood oxygen saturation SR > is SS (blood oxygen threshold), the high flow rate device starts to time, if the real-time blood oxygen saturation SR is not less than the blood oxygen threshold SS within 1 minute, it is determined that blood oxygen saturation reaches the standard, at this time, the device starts to search for the lowest blood oxygen saturation, and based on the currently output oxygen concentration M0, the output oxygen concentration is reduced by 0.5%, that is, M1 is M0-0.5%. Similarly to before, if the real-time blood oxygen saturation SR is not lower than the blood oxygen threshold SS within 5 minutes, the process continues to wait for 5 minutes, and if the real-time blood oxygen saturation SR is not lower than the blood oxygen threshold SS, the M1 is confirmed to be suitable for the user. If the real-time blood oxygen saturation degree SR is smaller than the blood oxygen threshold value SS in the above process, it indicates that the oxygen concentration cannot be reduced, the system immediately restores to the original oxygen concentration level, and the monitoring and comparison of the real-time blood oxygen saturation degree SR and the blood oxygen threshold value SS are restarted after 5 minutes.
As a preferable scheme, in this embodiment, the method further includes the steps of:
s0, detecting the real-time blood oxygen saturation of the user by the high-flow equipment in real time, judging whether the real-time blood oxygen saturation is smaller than the blood oxygen threshold value within eighth preset time, and if so, executing a step S11; if not, step S21 is executed. Preferably, the eighth predetermined time is 0.5 to 3 minutes, and more preferably 1 minute.
As a preferred scheme, in this embodiment, all usage data of a single user is uploaded to the server and is bound and stored with a corresponding account;
the content of the usage data comprises oxygen concentration, blood oxygen saturation and blood oxygen saturation standard mark.
Specifically, in general, one device is used by only one user, and therefore, the most appropriate oxygen concentration of the user can be found in the shortest time by recording the general use characteristics or physiological characteristics of the user. The specific process is as follows:
before the device is used, user information such as user number, name, gender and the like can be input. If the device finds that the user is a new user, a general flow is adopted, and if the device finds that the user is an old user, a self-adaptive background data result is called for use. During use, the device can record the magnitude of each fall in blood oxygen saturation, the corresponding rise in oxygen concentration, and the magnitude of oxygen concentration while maintaining normal blood oxygen saturation. The above information is stored in the form code of data in array or certain sequence in the device, and the storage format is (oxygen concentration, blood oxygen saturation standard mark). Of course, it should be noted that the one-to-one correspondence between the oxygen concentration data and the blood oxygen saturation data in the usage data stored here is the real-time blood oxygen saturation detected by the high flow rate device after a predetermined time (which may be set to 5 to 10 minutes, for example) of the administration of gas using the current oxygen concentration, for example, the real-time blood oxygen saturation detected after 5 minutes of the administration of gas using the current oxygen concentration.
Preferably, in this embodiment, when the high flow rate device is turned on, the calculation formula of the initial oxygen concentration of the gas transmission is as follows:
Mb＝Mmin+a(Mmax-Mmin)；
wherein M isbIs the initial oxygen concentration; mmaxThe maximum oxygen concentration of the gas transmission is achieved in the last use process; mminThe minimum oxygen concentration of the gas transmission is realized in the last use process; a is an initial parameter. Preferably, the initial parameter a is specifically set or selected by personal requirements, and the embodiment is not limited, and the size is 0.5-1, and more preferably 0.9. Screening the maximum oxygen concentration M of the gasmaxAnd eliminating the data of which the blood oxygen saturation mark in the use data is marked as not reaching the standard, and only using the use data of which the blood oxygen saturation mark is marked as reaching the standard to participate in operation. Specifically, the standard of meeting and not meeting the standard is as follows: and if the real-time blood oxygen saturation is larger than the blood oxygen threshold value, the real-time blood oxygen saturation reaches the standard, otherwise, the real-time blood oxygen saturation does not reach the standard.
Preferably, in this embodiment, when acquiring the initial oxygen concentration, the oxygen concentration of the gas to be delivered that can make the blood oxygen saturation of the user reach the standard is used.
In particular, each time the high flow device is used, it is usedAnd constructing a use curve in the use process, and sorting the arrays by the high-flow equipment according to the oxygen concentration when the high-flow equipment is reused to remove the data with the oxygen saturation not reaching the standard. The device then starts the treatment with MbAs an initial oxygen concentration output. When the blood oxygen saturation degree of the user is reduced, the set of the use data a0 closest to the current blood oxygen saturation degree can be directly found out from the list, and then the search is carried out from the position a0 to the back until the set of the use data a1 with the normal blood oxygen saturation degree restored is found, and at this time, the difference value obtained by subtracting the oxygen concentration corresponding to the a0 from the oxygen concentration corresponding to the use data a1 can be used as the parameter data with the increased oxygen concentration. In the scheme, 80% of the difference value is used as the first adjustment, and if the blood oxygen saturation degree is not met, the adjustment is carried out according to a standard procedure.
Preferably, in this embodiment, a usage curve based on oxygen concentration (oxygen concentration for transfusion) and blood oxygen saturation of a single user is constructed according to the usage data; further comprising the steps of:
s10, comparing the real-time blood oxygen saturation detected by the high flow device on the use curve to obtain the oxygen concentration in the use data of which the blood oxygen saturation reaches the standard and the oxygen concentration difference corresponding to the real-time blood oxygen saturation is minimum, and executing the step S11 by taking the difference as a first adjustment proportion. Preferably, the usage curve is constructed by using a real-time blood oxygen saturation detection value in a case where the real-time blood oxygen saturation is stable, for example, real-time blood oxygen saturation data detected after 5 minutes of the current oxygen concentration is used for gas delivery. Of course, the usage data involved in constructing the usage curve are all usage data for which the oximetry flag is identified as being up to standard.
Preferably, in this embodiment, the set ratio of the difference is used as an adjustment ratio value for the first adjustment. Because a certain data error may exist in the corresponding difference, when the difference result obtained by using the equipment this time in a certain reasonable range is used, the oxygen concentration of the gas during starting the equipment can be effectively prevented from being too high, preferably, the set proportion is preferably 60% -90%, and further preferably 80%.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims (10)

1. A method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment is characterized by comprising an oxygen concentration increasing process and comprising the following steps:
s11, the high-flow equipment increases the oxygen concentration of the gas delivery by a first preset proportion on the basis of the current output concentration and continues for a first preset time;
s12, detecting the real-time blood oxygen saturation of the user in real time by the high-flow device, judging whether the real-time blood oxygen saturation is in a rising state or not, and if not, executing a step S13; if yes, go to step S14;
s13, the high-flow device judges whether the real-time blood oxygen saturation rises back within a second preset time, if yes, the step S14 is executed; if not, go to step S15;
s14, the high-flow device judges whether the real-time blood oxygen saturation level does not fall back within a third preset time, if yes, the step S15 is executed after waiting for a fourth preset time; if not, go to step S15;
s15, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is smaller than the blood oxygen threshold value, the step S11 is executed.
2. The method of automatically adjusting delivered gas oxygen concentration according to claim 1, wherein the first predetermined ratio is 1-3%.
3. The method of automatically adjusting the oxygen concentration of a gas delivery of a high flow device of claim 1, further comprising an oxygen concentration reduction process comprising the steps of:
s21, the high flow device judges whether the real-time blood oxygen saturation of the user is larger than the blood oxygen threshold value in the fifth preset time, if yes, the step S22 is executed; if not, go to step S25;
s22, the high-flow equipment reduces the oxygen concentration of the gas delivery by a second preset proportion on the basis of the current output concentration and continues for a sixth preset time;
s23, the high flow device judges whether the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value in a plurality of time periods, if so, the high flow device waits for a seventh preset time, and then the step S25 is executed; otherwise, go to step S24;
s24, the high-flow device increases the oxygen concentration of the gas delivery by the second preset proportion on the basis of the current output concentration, and after the seventh preset time, the step S25 is executed;
s25, the high flow device detects the real-time blood oxygen saturation of the user in real time, and when the real-time blood oxygen saturation is larger than or equal to the blood oxygen threshold value, the step S21 is executed.
4. The method of automatically adjusting delivered gas oxygen concentration according to claim 3, wherein the second predetermined ratio is 0.1-1%.
5. The method for automatically adjusting the oxygen concentration of a gas delivery of a high flow device of claim 3, further comprising the steps of:
s0, detecting the real-time blood oxygen saturation of the user by the high-flow equipment in real time, judging whether the real-time blood oxygen saturation is smaller than the blood oxygen threshold value within eighth preset time, and if so, executing a step S11; if not, step S21 is executed.
6. The method for automatically adjusting the oxygen concentration of gas transmission of high-flow equipment according to claim 1, wherein all usage data of a single user is uploaded to a server and is bound and stored with a corresponding account;
the content of the usage data comprises oxygen concentration, blood oxygen saturation and blood oxygen saturation standard mark.
7. The method of claim 6, wherein the initial oxygen concentration of the gas delivered when the high flow device is turned on is calculated by the formula:
Mb＝Mmin+a(Mmax-Mmin)；
wherein M isbIs the initial oxygen concentration; mmaxThe maximum oxygen concentration of the gas transmission is achieved in the last use process; mminThe minimum oxygen concentration of the gas transmission is realized in the last use process; a is an initial parameter.
8. The method of claim 7, wherein the initial oxygen level is obtained using an oxygen delivery concentration that would bring the user's blood oxygen saturation level to a standard.
9. The method of automatically adjusting delivered oxygen concentration for a high flow device of claim 6, wherein a usage curve based on oxygen concentration and blood oxygen saturation is constructed for a single user from the usage data; further comprising the steps of:
s10, comparing the real-time blood oxygen saturation detected by the high flow device on the use curve to obtain the oxygen concentration in the use data of which the blood oxygen saturation reaches the standard and the oxygen concentration difference corresponding to the real-time blood oxygen saturation is minimum, and executing the step S11 by taking the difference as a first adjustment proportion.
10. The method of automatically adjusting delivered gas oxygen concentration according to claim 9, wherein the set proportion of the difference is used as a first-adjusted adjustment proportion value.
CN202011030305.9A 2020-09-27 2020-09-27 Method for automatically adjusting oxygen concentration of gas transmission by high-flow equipment Pending CN112169100A (en)

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