CN114768020A - Noninvasive ventilation equipment for transnasal high-flow humidified oxygen therapy, control method and control system - Google Patents

Noninvasive ventilation equipment for transnasal high-flow humidified oxygen therapy, control method and control system Download PDF

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CN114768020A
CN114768020A CN202210428523.0A CN202210428523A CN114768020A CN 114768020 A CN114768020 A CN 114768020A CN 202210428523 A CN202210428523 A CN 202210428523A CN 114768020 A CN114768020 A CN 114768020A
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oxygen
condition
flow
numerical range
gas
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陈筱霞
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Hebei Jiakang Youjian Technology Co ltd
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Hebei Jiakang Youjian Technology Co ltd
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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
    • A61M16/10—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
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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)
    • 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
    • A61M2230/40—Respiratory characteristics
    • A61M2230/42—Rate

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  • Heart & Thoracic Surgery (AREA)
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Abstract

The invention discloses a nasal high-flow humidification oxygen therapy noninvasive ventilation device, a control method and a control system, and relates to the technical field of oxygen therapy, wherein an oximeter in the device is used for obtaining the blood oxygen saturation of a tester; the target gas output device is used for acquiring the respiratory frequency of a tester and outputting gas meeting set conditions; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within a first range of values; the second condition is that the temperature and the humidity are within a second numerical range; the third condition is a condition that the flow rate is within a third range of values; the central control device is used for: in the intelligent ventilation mode, calculating a ROX index according to the blood oxygen saturation and the respiratory frequency, and calculating an oxygenation index according to the blood oxygen saturation; the first, second and third value ranges are adjusted according to the ROX index and the oxygenation index. The invention can provide gas meeting real-time requirements.

Description

Noninvasive ventilation equipment for transnasal high-flow humidified oxygen therapy, control method and control system
Technical Field
The invention relates to the technical field of oxygen therapy, in particular to a nasal high-flow humidifying oxygen therapy noninvasive ventilation device, a control method and a control system.
Background
The transnasal high-flow humidified oxygen therapy (HFNC) is a novel oxygen therapy mode, and mainly comprises a flow generating device, an air-oxygen mixing device, a heating and humidifying device and a nasal oxygen tube oxygen delivery gas circuit. The HFNC instrument can provide gas with 21-100 percent of oxygen concentration, 31-37 ℃ and 2-80L/min of flow, and is used for treating mild-moderate I type respiratory failure, mild respiratory distress, mild ventilation dysfunction, intolerance or contraindication to traditional oxygen therapy or noninvasive positive pressure ventilation.
The noninvasive ventilation in nasal high-flow humidification oxygen therapy is to mix oxygen and air according to a set proportion, send to the humidification device that heats and humidify fully, scour the dead space of nasal cavity of testers, increase respiratory tract mucous membrane humidity, do benefit to secretion and discharge.
The problems of the existing nasal high-flow humidifying oxygen therapy instrument technology are as follows: the existing transnasal high-flow humidification oxygen therapy instrument on the market does not provide treatment scheme suggestions, and treatment parameters of testers are completely set by workers according to experiences. As a new breathing support mode, if the HFNC is clinically applied properly, the HFNC technology can save the lives of testers in time and relieve the illness conditions of the testers, but if the application time is not appropriate, the illness conditions can be aggravated, and even the lives of the testers can be threatened.
Disclosure of Invention
The invention aims to provide a nasal high-flow humidification oxygen therapy noninvasive ventilation device, a control method and a control system, which can provide appropriate gas in real time according to pathophysiological characteristics of testers so as to meet the actual requirements of the testers.
In order to achieve the purpose, the invention provides the following scheme:
in a first aspect, the invention provides a nasal high-flow humidified oxygen therapy non-invasive ventilation device, which comprises a target gas output device, an oximeter and a central control device;
the oximeter is used for acquiring the blood oxygen saturation of a tester;
the target gas output device is used for:
outputting gas meeting set conditions; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition where the oxygen concentration is within a first range of values; the second condition is that the temperature and the humidity are within a second numerical range; the third condition is a condition that the flow rate is within a third range of values;
acquiring the respiratory frequency of a tester;
the central control device comprises at least a smart ventilation mode, the central control device being configured to:
in the smart ventilation mode, calculating a ROX index from the blood oxygen saturation and the respiratory rate, and calculating an oxygenation index from the blood oxygen saturation;
adjusting the first, second, and third numerical ranges according to the ROX index and the oxygenation index.
Optionally, the target gas output device comprises a flow generation device, an air-oxygen mixing device, a heating and humidifying device and a nasal oxygen tube oxygen delivery gas circuit which are connected in sequence, the flow generation device, the air-oxygen mixing device, the heating and humidifying device and the nasal oxygen tube oxygen delivery gas circuit are connected in a gas circuit mode, and the central control device is electrically connected with the flow generation device, the air-oxygen mixing device and the heating and humidifying device respectively.
Optionally, the flow generating device is configured to output a gas satisfying the third condition;
the air-oxygen mixing device is used for mixing the gas meeting the third condition with oxygen and outputting the gas meeting the first condition and meeting the third condition;
the heating and humidifying device is used for carrying out temperature and humidity treatment on the gas meeting the first condition and the third condition according to the second condition and outputting the gas meeting the set condition;
the nasal oxygen tube oxygen therapy gas path is used for inputting gas meeting set conditions into the nasal cavity of a tester.
Optionally, a first pressure sensor is arranged at an air outlet of the air-oxygen mixing device, and the first pressure sensor is used for acquiring the respiratory frequency of a tester.
Optionally, in said calculating a ROX index from said blood oxygen saturation and said respiratory rate, and an oxygenation index from said blood oxygen saturation, said central control means is adapted to:
calculating a ROX index according to the blood oxygen saturation, the respiratory frequency and the oxygen concentration of the gas meeting set conditions;
and calculating an oxygenation index according to the blood oxygen saturation and the oxygen concentration of the gas meeting the set condition.
Optionally, the flow generating device comprises a turbine fan and a first flow sensor;
the first flow sensor is used for acquiring the flow of gas in the nasal oxygen tube oxygen therapy gas path;
the central control device is used for determining a first control instruction according to the third numerical range and the flow of the gas in the nasal oxygen tube oxygen delivery gas path acquired by the first flow sensor; the first control instruction is used for controlling the working power of the turbine fan, so that the flow of the gas in the nasal oxygen tube oxygen delivery gas path is within the third numerical range.
Optionally, the air-oxygen mixing device comprises a proportional valve, a second flow sensor, a second pressure sensor, an oxygen concentration sensor and an air-oxygen mixing cavity; the first input end of the air-oxygen mixing cavity is communicated with the flow generating device; a second input end of the air-oxygen mixing cavity is communicated with an oxygen source through a proportional valve;
the second pressure sensor is used for monitoring the pressure of the oxygen source;
the second flow sensor is used for acquiring the oxygen delivery speed of the oxygen source;
the oxygen concentration sensor is used for acquiring the oxygen delivery concentration of the oxygen source;
the central control device is used for determining a second control instruction according to the first numerical range, the oxygen delivery speed of the oxygen source obtained by the second flow sensor and the oxygen delivery concentration of the oxygen source obtained by the oxygen concentration sensor; the second control instruction is used for controlling the opening of the proportional valve so that the oxygen concentration of the gas in the nasal oxygen tube oxygen delivery gas path is within the first numerical range.
Optionally, the central control apparatus further comprises a high flow mode and a low flow mode;
the central control device is used for:
in the high flow rate mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range;
and under the low flow mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range.
In a second aspect, the invention provides a method for controlling a nasal high flow humidified oxygen therapy non-invasive ventilation apparatus, comprising:
acquiring the blood oxygen saturation of a tester;
acquiring the respiratory frequency of a tester;
in the smart ventilation mode, calculating a ROX index from the blood oxygen saturation and the respiratory rate, and calculating an oxygenation index from the blood oxygen saturation;
adjusting a first, second, and third range of values based on the ROX index and the oxygenation index;
determining gas meeting set conditions according to the adjusted first numerical range, the adjusted second numerical range and the adjusted third numerical range; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition where the oxygen concentration is within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
In a third aspect, the present invention provides a control system for a nasal high flow humidified oxygen therapy non-invasive ventilation device, comprising:
the first acquisition module is used for acquiring the blood oxygen saturation of the tester;
the second acquisition module is used for acquiring the respiratory frequency of the testers;
an index calculation module for calculating a ROX index from the blood oxygen saturation and the respiratory rate and an oxygenation index from the blood oxygen saturation in the smart ventilation mode;
a numerical range adjustment module for adjusting a first numerical range, a second numerical range and a third numerical range according to the ROX index and the oxygenation index;
the gas determining module is used for determining the gas meeting the set conditions according to the adjusted first numerical range, the adjusted second numerical range and the adjusted third numerical range; the set conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the invention, the oxygenation index and the ROX index are calculated according to the pathophysiology characteristics of a tester, and the gas output by the target gas output device is adjusted according to the oxygenation index and the ROX index, so that the actual requirements of the tester are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a nasal high flow humidified oxygen therapy noninvasive ventilation apparatus of the present invention;
FIG. 2 is a diagram of information transmission through the nasal high flow humidified oxygen therapy non-invasive ventilation device of the present invention;
FIG. 3 is a schematic view of the process of the nasal high flow humidified oxygen therapy non-invasive ventilation device of the present invention;
FIG. 4 is a flow chart of the control method of the nasal high flow humidified oxygen therapy noninvasive ventilation device of the present invention;
fig. 5 is a structural diagram of a control system of the nasal high flow humidified oxygen therapy noninvasive ventilation device of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Example one
As shown in fig. 1 and fig. 2, the noninvasive ventilation equipment for nasal high flow humidified oxygen therapy provided by the embodiment of the invention comprises a target gas output device, an oximeter and a central control device.
The oximeter is used for acquiring the blood oxygen saturation of a tester.
The target gas output device is used for: acquiring the respiratory frequency of a tester, and outputting gas meeting set conditions; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition where the oxygen concentration is within a first range of values; the second condition is that the temperature and the humidity are within a second numerical range; the third condition is a condition that the flow rate is within a third range of values.
The central control device comprises at least a smart ventilation mode, the central control device being configured to:
in the smart ventilation mode, calculating a ROX index from the blood oxygen saturation and the respiratory rate, calculating an oxygenation index from the blood oxygen saturation, and adjusting the first, second, and third ranges of values from the ROX index and the oxygenation index.
In one example, the target gas output device comprises a flow generating device, an air-oxygen mixing device, a heating and humidifying device and a nasal oxygen tube oxygen delivery gas circuit which are sequentially connected, the flow generating device, the air-oxygen mixing device, the heating and humidifying device and the nasal oxygen tube oxygen delivery gas circuit are connected in a gas circuit mode, the central control device is electrically connected with the flow generating device, the air-oxygen mixing device and the heating and humidifying device respectively, and a tester is physically connected with the nasal oxygen tube oxygen delivery gas circuit and the oximeter.
Specifically, the method comprises the following steps: the flow generating device is used for outputting gas meeting the third condition; the air-oxygen mixing device is used for mixing the gas meeting the third condition with oxygen and outputting the gas meeting the first condition and meeting the third condition; the heating and humidifying device is used for carrying out temperature and humidity treatment on the gas meeting the first condition and the third condition according to the second condition and outputting the gas meeting the set condition; the nasal oxygen tube oxygen therapy gas circuit is used for inputting gas meeting set conditions into the nasal cavity of a tester.
Further, the flow generating device comprises a turbine fan and a first flow sensor.
The first flow sensor is used for acquiring the flow of gas in the nasal oxygen tube oxygen delivery gas path; the central control device is used for determining a first control instruction according to the third numerical range and the flow of the gas in the nasal oxygen tube oxygen delivery gas path acquired by the first flow sensor; the first control instruction is used for controlling the working power of the turbine fan so that the flow of the gas in the nasal oxygen tube oxygen delivery gas path is within the third numerical range.
According to the embodiment of the invention, the flow of the turbofan is controlled by the feedback of the first flow sensor, so that the closed-loop control of the flow is formed.
Further, the air-oxygen mixing device comprises a proportional valve, a second flow sensor, a second pressure sensor, an oxygen concentration sensor and an air-oxygen mixing cavity; the first input end of the air-oxygen mixing cavity is communicated with the flow generating device; and a second input end of the air-oxygen mixing cavity is communicated with an oxygen source through a proportional valve.
The second pressure sensor is used for monitoring the pressure of the oxygen source; the second flow sensor is used for acquiring the oxygen delivery speed of the oxygen source; the oxygen concentration sensor is used for acquiring the oxygen delivery concentration of the oxygen source.
The central control device is used for determining a second control instruction according to the first numerical range, the oxygen delivery speed of the oxygen source obtained by the second flow sensor and the oxygen delivery concentration of the oxygen source obtained by the oxygen concentration sensor; the second control instruction is used for controlling the opening of the proportional valve so that the oxygen concentration of the gas in the nasal oxygen tube oxygen delivery gas path is within the first numerical range.
In the embodiment of the invention, the second flow sensor and the oxygen concentration sensor are used for controlling the oxygen delivery speed and the oxygen delivery concentration of the proportional valve in a feedback manner to form double closed-loop control, so that air generated by the flow generating device is mixed with pure oxygen according to a set proportion to generate air-oxygen mixed gas.
In addition, a first pressure sensor (or a micro-pressure sensor) is arranged at an air outlet of the air-oxygen mixing device and used for collecting the respiratory frequency of a tester.
On this basis, in said calculating a ROX index from said blood oxygen saturation and said respiratory rate, and an oxygenation index from said blood oxygen saturation, said central control means is adapted to:
calculating a ROX index from the blood oxygen saturation, the respiratory rate, and the oxygen concentration of the gas satisfying a set condition, and calculating an oxygenation index from the blood oxygen saturation and the oxygen concentration of the gas satisfying a set condition.
Furthermore, the heating and humidifying device consists of a heating plate, a humidifying water box and a heating pipe, and the temperature and the humidity of the output gas are regulated and controlled by controlling the temperature of the heating plate and the temperature of the heating pipe. The dry gas generated by the air-oxygen mixing device flows through the heating and humidifying device to generate warm and humid gas.
The flow, oxygen concentration, temperature and humidity collected by the embodiment of the invention are all uniformly controlled by the central control device, and the oximeter transmits the collected blood oxygen saturation and heart rate to the central control device.
In one example: the nasal high-flow humidification oxygen therapy noninvasive ventilation device provided by the embodiment of the invention is added with an oxygenation index and ROX index calculation display function, provides physiological parameters required by treatment of a tester for workers, and ensures that an optimal respiratory treatment scheme is provided at a proper time.
ROX index ═ oxygen saturation/FiO2) The ratio to the breathing frequency; FiO2Is the percent inspired oxygen concentration.
And (3) verified: high flow nasal catheter treatment (HFNC) results from predictive pneumonia test persons can be used to early identify test persons who begin treatment on HFNC due to acute hypoxemic respiratory failure, or as a preventative treatment after planned extubation.
Oxygenation index (P/F) ═ PaO2/FiO2(ii) a Wherein, PaO2As partial pressure of arterial blood oxygen (measured by blood gas analyzer or oximeter), FiO2Is the percent inspired oxygen concentration.
In one example: the nasal high-flow humidified oxygen therapy noninvasive ventilation equipment provided by the embodiment of the invention has three working modes: high flow mode, low flow mode, smart ventilation mode.
The central control device is used for:
in the high flow rate mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range, and in the low flow rate mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range.
Flow range in high flow mode: 10L/min-80L/min, and is adjustable every 5L/min.
Flow range in low flow mode: 2L/min-25L/min, and is adjustable every 1L/min.
The intelligent ventilation is realized by automatically setting breathing parameters through a built-in algorithm, so that manual operation intervention is reduced, and the treatment efficiency is improved.
The implementation mode of the noninvasive ventilation equipment through nasal high-flow humidification oxygen therapy provided by the embodiment of the invention is as shown in fig. 3, after power-on work, the blood oxygen concentration and the respiratory frequency of a tester are monitored in real time, the current ROX index of the tester is calculated according to the pulse blood oxygen concentration, the respiratory frequency and the current oxygen uptake concentration of the tester, and the ROX index of the tester is fed back to a worker in real time. The oxygenation index is the same. The device reversely calculates the optimal oxygen supply concentration under different flow rates by combining the ROX index and the oxygenation index, and provides reference for setting the oxygen concentration of the device by working personnel. The staff can set up equipment parameter output according to equipment suggestion and the tester condition, also can directly select intelligent mode of ventilating, has equipment automatically regulated parameter output.
Example two
As shown in fig. 4, the embodiment of the present invention provides a control method of a noninvasive ventilation device for nasal high flow humidified oxygen therapy, including:
step 401: acquiring the blood oxygen saturation of the testing personnel and acquiring the breathing frequency of the testing personnel.
Step 402: in the smart ventilation mode, a ROX index is calculated from the blood oxygen saturation and the respiratory rate, and an oxygenation index is calculated from the blood oxygen saturation.
Step 403: adjusting a first, second, and third range of values based on the ROX index and the oxygenation index.
Step 404: determining gas meeting set conditions according to the adjusted first numerical range, the adjusted second numerical range and the adjusted third numerical range; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition where the oxygen concentration is within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
EXAMPLE III
As shown in fig. 5, the present invention provides a control system of a nasal high flow humidified oxygen therapy noninvasive ventilation device according to the first embodiment, comprising:
the first obtaining module 501 is used for obtaining the blood oxygen saturation of the test person.
And a second obtaining module 502, configured to obtain a respiratory rate of the test person.
An index calculation module 503, configured to calculate a ROX index according to the blood oxygen saturation and the respiratory rate, and calculate an oxygenation index according to the blood oxygen saturation in the smart ventilation mode.
A value range adjustment module 504, configured to adjust the first value range, the second value range, and the third value range according to the ROX index and the oxygenation index.
A gas determining module 505 meeting the setting condition, configured to determine, according to the adjusted first numerical range, the adjusted second numerical range, and the adjusted third numerical range, a gas meeting the setting condition; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
Compared with the prior art, the application has the beneficial effects that:
the oxygenation index and the ROX index are increased, so that the working personnel can directly know the physiological state of the testing personnel conveniently, diagnosis and treatment judgment can be made in time, redundant medical equipment is avoided, medical resources are saved, and a quick, effective and beneficial diagnosis and treatment scheme is realized.
Transnasal high flow humidified oxygen therapy (HFNC) advantages:
improve airway function through different mechanisms, increase tester tolerance.
The nasal oxygen catheter is adopted, so that the wearing is convenient and comfortable.
Aiming at the chronic obstructive pulmonary disease testers, high-flow therapy is adopted, and the airway pressure and the tidal volume are increased.
The high-flow oxygen inhalation of the testers in the stabilization period can reduce the acute exacerbation times.
PaCO of tester can be reduced2。
It is effective for type II respiratory failure, and can prevent type II respiratory double-section testers from tube drawing failure.
After the machine is removed and the tube is pulled out, the ICU is inserted into the tube again, and the HFNC used by the low-risk testing personnel has better effect than the common oxygen therapy; the HFNC is better than the common oxygen therapy for the machine withdrawing testers after the surgery, and aims at the airway dryness testers.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.
The principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.

Claims (10)

1. A nasal high flow humidification oxygen therapy noninvasive ventilation device is characterized by comprising a target gas output device, a blood oxygen instrument and a central control device;
the oximeter is used for acquiring the blood oxygen saturation of a tester;
the target gas output device is used for:
outputting gas meeting set conditions; the set conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within a first range of values; the second condition is that the temperature and the humidity are within a second numerical range; the third condition is a condition that the flow rate is within a third range of values;
acquiring the respiratory frequency of a tester;
the central control device comprises at least a smart ventilation mode, the central control device being configured to:
in the smart ventilation mode, calculating a ROX index from the blood oxygen saturation and the respiratory rate, and calculating an oxygenation index from the blood oxygen saturation;
adjusting the first, second, and third numerical ranges according to the ROX index and the oxygenation index.
2. The nasal high-flow humidification oxygen therapy noninvasive ventilation equipment of claim 1, wherein the target gas output device comprises a flow generating device, an air-oxygen mixing device, a heating humidification device and a nasal oxygen tube oxygen delivery gas path which are connected in sequence, the flow generating device, the air-oxygen mixing device, the heating humidification device and the nasal oxygen tube oxygen delivery gas path are connected in a gas path manner, and the central control device is electrically connected with the flow generating device, the air-oxygen mixing device and the heating humidification device respectively.
3. The noninvasive ventilation apparatus for nasal high flow humidified oxygen therapy according to claim 2, wherein said flow generating means is adapted to output gas satisfying said third condition;
the air-oxygen mixing device is used for mixing the gas meeting the third condition with oxygen and outputting the gas meeting the first condition and meeting the third condition;
the heating and humidifying device is used for carrying out temperature and humidity treatment on the gas meeting the first condition and the third condition according to the second condition and outputting the gas meeting the set condition;
the nasal oxygen tube oxygen therapy gas circuit is used for inputting gas meeting set conditions into the nasal cavity of a tester.
4. The nasal high flow humidified oxygen therapy noninvasive ventilation apparatus of claim 2, wherein a first pressure sensor is provided at the air outlet of said air-oxygen mixing device, said first pressure sensor is used for collecting the respiratory frequency of the tested person.
5. A noninvasive ventilation apparatus for nasal high flow humidified oxygen therapy as claimed in claim 1 or 4, wherein in said calculating of ROX index from said blood oxygen saturation and said respiratory rate and said oxygenation index from said blood oxygen saturation, said central control means is adapted to:
calculating a ROX index according to the blood oxygen saturation, the respiratory frequency and the oxygen concentration of the gas meeting set conditions;
and calculating an oxygenation index according to the blood oxygen saturation and the oxygen concentration of the gas meeting set conditions.
6. The noninvasive ventilation apparatus for nasal high flow humidified oxygen therapy according to claim 2, wherein said flow generating means comprises a turbo fan and a first flow sensor;
the first flow sensor is used for acquiring the flow of gas in the nasal oxygen tube oxygen therapy gas path;
the central control device is used for determining a first control instruction according to the third numerical value range and the flow of the gas in the nasal oxygen tube oxygen delivery gas path acquired by the first flow sensor; the first control instruction is used for controlling the working power of the turbine fan, so that the flow of the gas in the nasal oxygen tube oxygen delivery gas path is within the third numerical range.
7. The nasal high flow humidified oxygen therapy non-invasive ventilation apparatus according to claim 2, wherein said air-oxygen mixing means comprises a proportional valve, a second flow sensor, a second pressure sensor, an oxygen concentration sensor and an air-oxygen mixing chamber; the first input end of the air-oxygen mixing cavity is communicated with the flow generating device; a second input end of the air-oxygen mixing cavity is communicated with an oxygen source through a proportional valve;
the second pressure sensor is used for monitoring the pressure of the oxygen source;
the second flow sensor is used for acquiring the oxygen delivery speed of the oxygen source;
the oxygen concentration sensor is used for acquiring the oxygen delivery concentration of the oxygen source;
the central control device is used for determining a second control instruction according to the first numerical range, the oxygen delivery speed of the oxygen source acquired by the second flow sensor and the oxygen delivery concentration of the oxygen source acquired by the oxygen concentration sensor; the second control instruction is used for controlling the opening of the proportional valve so that the oxygen concentration of the gas in the nasal oxygen tube oxygen delivery gas path is within the first numerical range.
8. The nasal high flow humidified oxygen therapy non-invasive ventilation apparatus according to claim 1, wherein said central control means further comprises a high flow mode and a low flow mode;
the central control device is used for:
in the high-flow mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range;
and under the low flow mode, adjusting the third numerical range, and determining the first numerical range and the second numerical range according to the adjusted third numerical range.
9. A control method of a nasal high-flow humidified oxygen therapy noninvasive ventilation device is characterized by comprising the following steps:
acquiring the blood oxygen saturation of a tester;
acquiring the respiratory frequency of a tester;
in a smart ventilation mode, calculating a ROX index from the blood oxygen saturation and the respiratory rate, and calculating an oxygenation index from the blood oxygen saturation;
adjusting a first, second, and third range of values based on the ROX index and the oxygenation index;
determining the gas meeting the set condition according to the adjusted first numerical range, the adjusted second numerical range and the adjusted third numerical range; the set conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
10. A control system of a nasal high flow humidified oxygen therapy non-invasive ventilation device, comprising:
the first acquisition module is used for acquiring the blood oxygen saturation of the tester;
the second acquisition module is used for acquiring the respiratory frequency of the tester;
an index calculation module for calculating a ROX index from the blood oxygen saturation and the respiratory rate and an oxygenation index from the blood oxygen saturation in a smart ventilation mode;
a numerical range adjustment module for adjusting a first numerical range, a second numerical range and a third numerical range according to the ROX index and the oxygenation index;
the gas determining module is used for determining the gas meeting the set conditions according to the adjusted first numerical range, the adjusted second numerical range and the adjusted third numerical range; the setting conditions include a first condition, a second condition and a third condition; the first condition comprises a condition of an oxygen concentration within the first range of values; the second condition is that the temperature and the humidity are within the second numerical range; the third condition is a condition that the flow rate is within the third range of values.
CN202210428523.0A 2022-04-22 2022-04-22 Noninvasive ventilation equipment for transnasal high-flow humidified oxygen therapy, control method and control system Pending CN114768020A (en)

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CN202210428523.0A CN114768020A (en) 2022-04-22 2022-04-22 Noninvasive ventilation equipment for transnasal high-flow humidified oxygen therapy, control method and control system

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CN114768020A true CN114768020A (en) 2022-07-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117085223A (en) * 2023-08-31 2023-11-21 广州市思创泓一电子科技有限公司 Intelligent oxygen supply and production equipment and operation monitoring system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117085223A (en) * 2023-08-31 2023-11-21 广州市思创泓一电子科技有限公司 Intelligent oxygen supply and production equipment and operation monitoring system thereof
CN117085223B (en) * 2023-08-31 2024-04-05 广州市思创泓一电子科技有限公司 Intelligent oxygen supply and production equipment and operation monitoring system thereof

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