CN114949523A - Intelligent breathing machine system with oxyhemoglobin saturation control function and control method - Google Patents
Intelligent breathing machine system with oxyhemoglobin saturation control function and control method Download PDFInfo
- Publication number
- CN114949523A CN114949523A CN202210694367.2A CN202210694367A CN114949523A CN 114949523 A CN114949523 A CN 114949523A CN 202210694367 A CN202210694367 A CN 202210694367A CN 114949523 A CN114949523 A CN 114949523A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- module
- air
- patient
- spo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 108010064719 Oxyhemoglobins Proteins 0.000 title claims description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 186
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 186
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 156
- 239000008280 blood Substances 0.000 claims abstract description 65
- 210000004369 blood Anatomy 0.000 claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 16
- 230000000241 respiratory effect Effects 0.000 claims abstract description 13
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 7
- 201000010099 disease Diseases 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000002829 reductive effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 6
- 238000002640 oxygen therapy Methods 0.000 abstract description 5
- 206010021143 Hypoxia Diseases 0.000 description 7
- 208000018875 hypoxemia Diseases 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000006545 Chronic Obstructive Pulmonary Disease Diseases 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 2
- 206010013975 Dyspnoeas Diseases 0.000 description 2
- 208000029523 Interstitial Lung disease Diseases 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 208000035475 disorder Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 206010008479 Chest Pain Diseases 0.000 description 1
- 206010009126 Chronic respiratory failure Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 206010047924 Wheezing Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 208000013116 chronic cough Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 201000004193 respiratory failure Diseases 0.000 description 1
- 230000036387 respiratory rate Effects 0.000 description 1
- 238000002644 respiratory therapy Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- A61M16/105—Filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14542—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring blood 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
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
- A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
-
- 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
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M2016/102—Measuring a parameter of the content of the delivered gas
- A61M2016/1025—Measuring a parameter of the content of the delivered gas the O2 concentration
-
- 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
- A61M2205/3331—Pressure; Flow
- A61M2205/3337—Controlling, regulating pressure or flow by means of a valve by-passing a pump
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Cardiology (AREA)
- Optics & Photonics (AREA)
- Physiology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to an intelligent breathing machine system with a blood oxygen saturation control function and a control method, wherein the system comprises a blood oxygen saturation monitor, an air-oxygen mixing module, a breathing machine module, a control module and a terminal; on the premise of meeting the respiratory support of a patient, according to the dynamic change of the blood oxygen saturation value of the patient, in the range of the blood oxygen saturation, the air-oxygen mixing module automatically adjusts the ratio of the output flow of oxygen to the total flow of a breathing pipeline, and changes the concentration of oxygen inhaled by the patient, so that the blood oxygen saturation of the patient is stabilized at a set value; the automatic adjustment of the oxygen concentration is realized according to the disease types of different patients during control, so that the blood oxygen saturation of the patients is always maintained in an optimal medical range; the oxygen concentration fraction of the output gas is automatically controlled through the blood oxygen saturation of the patient, and the safety and the effectiveness of the respiratory oxygen therapy can be effectively improved.
Description
Technical Field
The invention relates to the technical field of respiratory therapy, in particular to an intelligent breathing machine system with a blood oxygen saturation control function and a control method.
Background
Ventilators are the common devices for positive airway pressure Therapy at present, and many patients with respiratory dysfunction are often accompanied by hypoxemia or have more serious symptoms, require respiratory support and Long-term Oxygen Therapy (LTOT: Long-term Oxygen Therapy); the disorders that are currently primarily addressed include:
severe hypoxemia (severe hypoxemia): SpO2 (arterial oxygen saturation) assessed by pulse oximeter ≦ 88%; or PaO2 (partial pressure of arterial blood oxygen) of 55mm Hg (7.3kPa) as assessed by blood gas sampling;
moderate hypoxemia (moderate hypoxemia): 88 to 93% of SpO2 or 56 to 60mm Hg (7.5 to 7.8kPa) of PaO 2;
COPD (chronic obstructive pulmonary disease): the lung disease has the characteristic of airflow limitation, and the airflow limitation is not completely reversible and develops progressively; the clinical manifestations are chronic cough, expectoration, short breath or dyspnea, wheezing and chest distress, and the diagnosis can be confirmed through lung function examination;
ILD (interstitial lung disease-chronic respiratory failure): is a general term of clinical-pathological entities consisting of different disease groups with diffuse lung parenchyma, alveoli inflammation and interstitial fibrosis as pathological basic pathological changes and active dyspnea, diffuse infiltration shadow of X-ray chest radiograph, restrictive ventilation disturbance, reduction of Diffuse (DLCO) function and hypoxemia as clinical manifestations.
At present, the following disadvantages exist only depending on artificial care:
(1) to realize professional parameter setting, professional nursing staff are needed to regulate and control and monitor the parameters constantly;
(2) initial diagnosis data of an anoxic state are commonly lost, so that doctor's advice errors are easily caused;
(3) the oxygen flow input into the breathing machine is fixed and is not dynamically adjusted according to the change of the oxygen deficiency degree;
(4) the dynamic monitoring of the blood oxygen concentration of the patient is lacked, the monitoring data are seriously lacked, and the doctor-patient dispute cannot be effectively traced.
Therefore, aiming at the defects in the prior art, the invention develops an intelligent breathing machine system with a blood oxygen saturation control function and a control method thereof, so as to solve the problems in the prior art.
Disclosure of Invention
The invention aims to: the intelligent breathing machine system with the oxyhemoglobin saturation control function and the control method are provided to solve the problem that breathing machine equipment in the prior art cannot achieve dynamic adjustment of oxygen flow in a targeted mode.
The technical scheme of the invention is as follows: intelligent breathing machine system with oxyhemoglobin saturation control function includes:
the oxyhemoglobin saturation monitor is used for monitoring oxyhemoglobin saturation and pulse rate of the patient and feeding back the physical sign parameters to the control module;
the air-oxygen mixing module receives the instruction of the control module, adjusts the ratio of the oxygen output flow to the respiratory main flow and feeds back parameters to the control module;
the breathing module receives the instruction of the control module, conveys the air-oxygen mixed gas output by the air-oxygen mixing module to a patient and feeds back parameters to the control module;
and the control module receives the parameter feedback or input of each module and outputs a control instruction to each module so as to control the operation of the whole system.
Preferably, empty oxygen mixing module includes air end and oxygen end, the air end is connected with the filter, the oxygen end is connected with oxygen source and modulation module, the oxygen source includes high-pressure oxygen source and low-pressure oxygen source, the modulation module is used for carrying out the modulation processing of oxygen pressure and velocity of flow.
Preferably, the system also comprises a terminal, wherein the terminal is connected with the control module in a wireless or wired transmission mode to realize the input and output of parameters.
Preferably, the parameter data input by the control module comprises data monitored by an oxyhemoglobin saturation monitor, physiological data of a patient, parameters monitored by a modulation module, parameters monitored by a breathing machine and an instruction input by a terminal;
the control module outputs control signals to the air-oxygen mixing module and the breathing machine module, and feeds back various monitoring data to the terminal.
Based on an intelligent breathing machine system with the function of controlling the blood oxygen saturation, the invention also develops a control method of the intelligent breathing machine, and the control method specifically comprises the following steps:
(1) setting initial FiO 2 Value, blood oxygen saturation (SpO) 2set )；
(2) Starting up work, outputting initial FiO 2 ；
(3) Judging the relationship between the blood oxygen saturation of the patient and the preset blood oxygen saturation, and controlling the FiO of the output gas of the breathing machine module according to the 'adding/subtracting' oxygen logic 2 A value;
wherein FiO 2 The calculation method of the value is as follows:
according to V General assembly ＝V O2 +V Air (a)
FiO 2 ＝(V O2 *98％+V Air (a) *21％)/V General assembly
＝(V O2 *98％+(V General assembly -V O2 )*21％)/V General assembly
＝V O2 /V General assembly *77％+21％
Wherein: v O2 The volume of the oxygen input into the air-oxygen mixing module; 98% is the concentration of the hospital hyperbaric oxygen source; v Air (a) The volume of the air input into the air-oxygen mixing module; the proportion of oxygen in air is 21 percent; v General assembly Is the total flow of gas delivered to the patient; FiO 2 Is the oxygen concentration of the gas delivered to the patient.
Preferably, the "adding/subtracting" oxygen logic in step (3) comprises the following:
a. when the blood oxygen concentration is less than the preset blood oxygen saturation (SpO) 2set ) In time, the oxygen flow is increased in time to increase the output oxygen concentration;
when SpO 2 ＜SpO 2set At 5%, increase oxygen flow 4LPM every 15 s;
then FiO 2 ＝(V O2 initial +4*T/15)/V General assembly *77％+21％
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 15, represents that the system makes the judgment once every 15S passes and gives an adjusting instruction;
when SpO 2 ＞SpO 2set At 5%, increase oxygen flow 2LPM every 25 s;
then FiO 2 ＝(V O2 initial +4 × T/25)/Vtotal 77% + 21%
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 25, represents that the system makes the judgment once every 25S and gives an adjusting instruction;
b. when the blood oxygen concentration is higher than the preset blood oxygen saturation (SpO) 2set ) Time, the oxygen flow is reduced in time beats;
when SpO 2 ＞SpO 2set When the oxygen flow rate was decreased by 1LPM every 30 s.
Preferably, in the steps a and b, the adjustment time of the oxygen flow is set, and when the blood oxygen concentration of the patient is stabilized at the SpO within the set time 2set When the air-oxygen mixing module works according to the currently set parameters;
when the blood oxygen concentration range of the patient can not reach the SpO all the time within the set time 2set And sending out an alarm prompt.
Preferably, the adjustment time of the oxygen flow is within 2 min.
Preferably, in the step (1), different blood oxygen saturation levels (SpO) are set for different patient condition types 2set )。
Compared with the prior art, the invention has the advantages that:
(1) the invention is used for realizing Automatic Oxygen Flow Adjustment (AOA), and under the premise of meeting the respiratory support of a patient, the invention realizes that the air-Oxygen mixing module automatically adjusts the ratio of the output Flow of Oxygen and the total Flow of a breathing pipeline in the range of the blood Oxygen saturation according to the dynamic change of the blood Oxygen saturation value of the patient and changes the concentration of Oxygen inhaled by the patient, thereby stabilizing the blood Oxygen saturation of the patient at a set value.
(2) The oxyhemoglobin saturation monitor can feed back oxyhemoglobin saturation, pulse rate data and respiratory condition of a user to the terminal in real time, so that medical staff or guardians can read and analyze the oxyhemoglobin saturation, the pulse rate data and the respiratory condition, physiological conditions of patients can be judged, and probability of giving wrong medical advice can be reduced.
(3) On the basis of realizing the automatic adjustment of the oxygen flow, the automatic adjustment of the oxygen concentration is realized according to the disease types of different patients, so that the blood oxygen saturation of the patients is always maintained in an optimal medical range (near the expected blood oxygen saturation); by setting more targeted target blood oxygen saturation, the oxygen concentration fraction of the output gas is automatically controlled, and the safety and effectiveness of the respiratory oxygen therapy are improved.
Drawings
The invention is further described with reference to the following figures and examples:
fig. 1 is a schematic diagram of an intelligent ventilator system with blood oxygen saturation control according to the present invention;
FIG. 2 is a control logic diagram of the control method of the intelligent ventilator according to the present invention;
FIG. 3 is a schematic diagram of the air-oxygen mixing module and the control module according to the present invention.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples:
as shown in fig. 1, an intelligent breathing machine system with a blood Oxygen saturation control function is used for realizing Automatic Oxygen Flow Adjustment (AOA), and includes a blood Oxygen saturation monitor, an air-Oxygen mixing module, a breathing machine module, a control module and a terminal.
The oxyhemoglobin saturation monitor is directly worn by a patient, is used for monitoring the oxyhemoglobin saturation and the pulse rate of the patient, and feeds back the monitored physical sign data to the control module; the oxyhemoglobin saturation monitor can be directly worn on the finger position of a patient by using an oxyhemoglobin saturation monitoring fingerstall; meanwhile, other physiological data of the patient can be input into the control module in an entry mode.
The air-oxygen mixing module can automatically adjust the ratio of the output flow of oxygen to the flow of the respiratory main path by receiving an instruction from the control module according to the dynamic change range of the blood oxygen saturation value of the patient, namely, the air and the oxygen are mixed according to a certain proportion; the air-oxygen mixing module can work as an independent module and also can be used as a component part in a breathing machine module, and structurally comprises an air end and an oxygen end, wherein the air end is connected with a filter to filter air before entering, and the oxygen end is connected with an oxygen source and a modulation module; the oxygen source includes high-pressure oxygen source (for example medical high pressure wall oxygen) and low pressure oxygen source (for example medical oxygen generator oxygen suppliment), and the modulation module is used for carrying out the modulation processing of oxygen pressure and flow to input monitoring parameter (oxygen pressure, flow etc.) to control module, this modulation module can regard as a component in the empty oxygen mixing module, also can independently regard as the leading processing unit of oxygen source.
The breathing machine module receives an instruction from the control module and transmits the air-oxygen mixed gas output by the air-oxygen mixing module to a patient according to a set change mode, flow, pressure and the like; including pressurization control, flow control, accuse temperature and humidity, operating mode feedback, the mode control etc. to the air-oxygen mixture, monitoring parameter (gas pressure, flow, respiratory rate, temperature, humidity, action duration etc.) in the course of the work also feeds back to control module, because the breathing machine belongs to traditional equipment, consequently will not give unnecessary details to its detailed structure this embodiment.
The terminal, which generally comprises a computer or a mobile phone, is connected with the control module in a wireless/wired transmission mode to realize the input and output of parameters, so that medical care personnel or guardians can read and analyze the parameters and adjust various working parameters.
The control module receives the feedback or input of the parameters of each module, outputs a control instruction to each module through an internal preset control logic, further controls the operation of the whole system, and monitors the working condition of the whole system and the physiological signs of the human body; in combination, the input parameter data comprises data monitored by an oxyhemoglobin saturation monitor, physiological data of a patient, parameters monitored by a modulation module, parameters monitored by a breathing machine and human instructions input by a terminal; the control module outputs control signals to the air-oxygen mixing module and the breathing machine module, and feeds back various monitoring data to the terminal.
On the premise of meeting the respiratory support of a patient, the invention realizes that the air-oxygen mixing module automatically adjusts the ratio of the oxygen output flow to the total flow of the breathing pipeline in the range of the blood oxygen saturation degree of the doctor's advice according to the dynamic change of the blood oxygen saturation degree value of the patient, and changes the concentration of the oxygen inhaled by the patient, thereby stabilizing the blood oxygen saturation degree of the patient at a set value.
Based on an intelligent breathing machine system with a blood oxygen saturation control function, the invention also develops a control method of the intelligent breathing machine, and the control method is shown in the combined figure 2 and specifically comprises the following steps:
(1) setting initial FiO 2 Value, blood oxygen saturation (SpO) 2set ) Typically, different blood oxygen saturation levels (SpO) are set for different patient condition types 2set ) Reference is made to the following (types of disorders include, but are not limited to, the following):
(2) selecting patient type and starting work, outputting initial FiO 2 ；
(3) Judging the relationship between the blood oxygen saturation of the patient and the preset blood oxygen saturation, and controlling the FiO of the output gas of the breathing machine module according to the 'adding/subtracting' oxygen logic 2 A value;
according to V, as shown in FIG. 3 General assembly ＝V O2 +V Air (a)
FiO 2 ＝(V O2 *98％+V Air (a) *21％)/V General assembly
＝(V O2 *98％+(V General assembly -V O2 )*21％)/V General assembly
＝V O2 /V General assembly *77％+21％
Wherein: v O2 The volume of the oxygen input into the air-oxygen mixing module; 98% is the concentration of the hospital hyperbaric oxygen source; v Air (a) The volume of the air input into the air-oxygen mixing module; the proportion of oxygen in air is 21 percent; v General assembly Is the total flow of gas delivered to the patient; FiO 2 Is the oxygen concentration of the gas delivered to the patient;
based on this, the specific "add/subtract" oxygen logic is:
a. when the blood oxygen concentration is less than the preset blood oxygen saturation (SpO) 2set ) In time, the oxygen flow is increased in time to increase the output oxygen concentration; setting the regulating time of oxygen flow, wherein the time is generally within 2 min;
when SpO 2 ＜SpO 2set At 5%, increase oxygen flow 4LPM every 15 s;
then FiO 2 ＝(V O2 initial +4*T/15)/V General assembly *77％+21％
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 15, represents that the system makes the judgment once every 15S passes and gives an adjusting instruction;
when SpO 2 ＞SpO 2set At 5%, increase oxygen flow 2LPM every 25 s;
then FiO 2 ＝(V O2 initial +4 × T/25)/Vtotal 77% + 21%
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 25, represents that the system makes the judgment once every 25S and gives an adjusting instruction;
when the blood oxygen concentration of the patient is stabilized at the SpO within the set time 2set When the air-oxygen mixing module works according to the currently set parameters;
when the blood oxygen concentration range of the patient can not reach the SpO all the time within the set time 2set And sending an alarm prompt, and carrying out monitoring by human intervention.
b. When the blood oxygen concentration is higher than the preset blood oxygen saturation (SpO) 2set ) Time, the oxygen flow is reduced in time beats; setting the regulating time of oxygen flow, wherein the time is generally within 2 min;
namely: when SpO 2 ＞SpO 2set While decreasing the oxygen flow by 1LPM every 30 s;
when the blood oxygen concentration of the patient is stabilized at the SpO within the set time 2set When the air-oxygen mixing module works according to the currently set parameters;
when the blood oxygen concentration range of the patient can not reach the SpO all the time within the set time 2set When the user needs to send out an alarm promptThe monitoring is performed for intervention.
By adopting the control method, according to the disease types of different patients, the more targeted target blood oxygen saturation is set, and the automatic adjustment of the oxygen concentration is realized, so that the blood oxygen saturation of the patients is always maintained in an optimal medical range (near the expected blood oxygen saturation), and the safety and the effectiveness of the respiratory oxygen therapy are improved.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. An intelligent ventilator system with oxyhemoglobin saturation control function, comprising:
the oxyhemoglobin saturation monitor is used for monitoring oxyhemoglobin saturation and pulse rate of the patient and feeding back the physical sign parameters to the control module;
the air-oxygen mixing module receives the instruction of the control module, adjusts the ratio of the oxygen output flow to the respiratory main flow and feeds back the parameters to the control module;
the breathing module receives the instruction of the control module, conveys the air-oxygen mixed gas output by the air-oxygen mixing module to a patient and feeds back parameters to the control module;
and the control module receives the parameter feedback or input of each module and outputs a control instruction to each module so as to control the operation of the whole system.
2. The smart ventilator system with blood oxygen saturation control function according to claim 1, characterized in that: empty oxygen mixing module includes air end and oxygen end, the air end is connected with the filter, the oxygen end is connected with oxygen source and modulation module, the oxygen source includes hyperbaric oxygen source and low-pressure oxygen source, the modulation module is used for carrying out the modulation processing of oxygen pressure and velocity of flow.
3. The smart ventilator system with blood oxygen saturation control function according to claim 1, characterized in that: the terminal is connected with the control module in a wireless or wired transmission mode to realize input and output of parameters.
4. The smart ventilator system with blood oxygen saturation control function according to claim 3, characterized in that: the parameter data input by the control module comprises data monitored by an oxyhemoglobin saturation monitor, physiological data of a patient, parameters monitored by a modulation module, parameters monitored by a breathing machine and an instruction input by a terminal;
the control module outputs control signals to the air-oxygen mixing module and the breathing machine module, and feeds back various monitoring data to the terminal.
5. The control method of the intelligent breathing machine based on any one of claims 1-4 is characterized in that: the control method specifically comprises the following steps:
(1) set initial FiO 2 Value, blood oxygen saturation (SpO) 2set )；
(2) Starting up work, outputting initial FiO 2 ；
(3) Judging the relationship between the blood oxygen saturation of the patient and the preset blood oxygen saturation, and controlling the FiO of the output gas of the breathing machine module according to the 'adding/subtracting' oxygen logic 2 A value;
wherein FiO 2 The calculation method of the value is as follows:
according to V General assembly ＝V O2 +V Air (W)
FiO 2 ＝(V O2 *98％+V Air (a) *21％)/V General assembly
＝(V O2 *98％+(V General assembly -V O2 )*21％)/V General assembly
＝V O2 /V General (1) *77％+21％
Wherein: v O2 The volume of the oxygen input into the air-oxygen mixing module; 98% is the concentration of the hospital hyperbaric oxygen source; v Air (W) The volume of the air input into the air-oxygen mixing module; the proportion of oxygen in air is 21 percent; v General assembly Is the total flow of gas delivered to the patient; FiO 2 Is the oxygen concentration of the gas delivered to the patient.
6. The control method of the intelligent ventilator according to claim 5, characterized in that: the adding/subtracting oxygen logic in the step (3) comprises the following steps:
a. when the blood oxygen concentration is less than the preset blood oxygen saturation (SpO) 2set ) In time, the oxygen flow is increased in time to increase the output oxygen concentration;
when SpO 2 ＜SpO 2set At 5%, increase oxygen flow 4LPM every 15 s;
then FiO 2 ＝(V O2 initial +4*T/15)/V General assembly *77％+21％
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 15, represents that the system makes the judgment once every 15S passes and gives an adjusting instruction;
when SpO 2 ＞SpO 2set At 5%, increase oxygen flow 2LPM every 25 s;
then FiO 2 ＝(V O2 initial +4 × T/25)/Vtotal 77% + 21%
Wherein: t is the time elapsed after the system makes the judgment, is a multiple of 25, represents that the system makes the judgment once every 25S and gives an adjusting instruction;
b. when the blood oxygen concentration is higher than the preset blood oxygen saturation (SpO) 2set ) In time, the oxygen flow is reduced in time beats;
when SpO 2 ＞SpO 2set When the oxygen flow rate was decreased by 1LPM every 30 s.
7. The control method of the intelligent ventilator according to claim 6, characterized in that: in the steps a and b, the adjustment time of the oxygen flow is set, and when the blood oxygen concentration of the patient is stabilized at the SpO within the set time 2set When the air-oxygen mixing module works according to the currently set parameters;
when the blood oxygen concentration range of the patient can not reach the SpO all the time within the set time 2set And sending out an alarm prompt.
8. The control method of the intelligent breathing machine according to claim 7, wherein: the adjustment time of the oxygen flow is within 2 min.
9. The control method of the intelligent ventilator according to claim 5, characterized in that: in the step (1), different blood oxygen saturation levels (SpO) are set for different patient disease types 2set )。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210694367.2A CN114949523A (en) | 2022-06-20 | 2022-06-20 | Intelligent breathing machine system with oxyhemoglobin saturation control function and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210694367.2A CN114949523A (en) | 2022-06-20 | 2022-06-20 | Intelligent breathing machine system with oxyhemoglobin saturation control function and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114949523A true CN114949523A (en) | 2022-08-30 |
Family
ID=82962928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210694367.2A Pending CN114949523A (en) | 2022-06-20 | 2022-06-20 | Intelligent breathing machine system with oxyhemoglobin saturation control function and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114949523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116196522A (en) * | 2023-04-27 | 2023-06-02 | 首都医科大学宣武医院 | Respiration monitoring and adjusting system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399164A (en) * | 2014-12-01 | 2015-03-11 | 北京神鹿腾飞医疗科技有限公司 | Intelligent respirator and aerating method of using the respirator |
| CN108159544A (en) * | 2017-12-27 | 2018-06-15 | 江苏康尚生物医疗科技有限公司 | Method, oxygenerator and the system of automatic adjustment oxygen therapy concentration |
| KR20200021647A (en) * | 2018-08-21 | 2020-03-02 | 주식회사 멕 아이씨에스 | Method for automatic controlling a fraction of inspired oxygen of medical ventilator |
| WO2022017156A1 (en) * | 2020-07-22 | 2022-01-27 | 深圳迈瑞生物医疗电子股份有限公司 | Method for adjusting fraction of inspired oxygen, and respiratory support device |
-
2022
- 2022-06-20 CN CN202210694367.2A patent/CN114949523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399164A (en) * | 2014-12-01 | 2015-03-11 | 北京神鹿腾飞医疗科技有限公司 | Intelligent respirator and aerating method of using the respirator |
| CN108159544A (en) * | 2017-12-27 | 2018-06-15 | 江苏康尚生物医疗科技有限公司 | Method, oxygenerator and the system of automatic adjustment oxygen therapy concentration |
| KR20200021647A (en) * | 2018-08-21 | 2020-03-02 | 주식회사 멕 아이씨에스 | Method for automatic controlling a fraction of inspired oxygen of medical ventilator |
| WO2022017156A1 (en) * | 2020-07-22 | 2022-01-27 | 深圳迈瑞生物医疗电子股份有限公司 | Method for adjusting fraction of inspired oxygen, and respiratory support device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116196522A (en) * | 2023-04-27 | 2023-06-02 | 首都医科大学宣武医院 | Respiration monitoring and adjusting system |
| CN116196522B (en) * | 2023-04-27 | 2023-07-18 | 首都医科大学宣武医院 | Respiration monitoring and adjusting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2539001B1 (en) | Spontaneous breathing trial manager | |
| EP2611485B1 (en) | Ventilator apparatus and system for ventilation | |
| JP5016595B2 (en) | Apparatus and method for controlling inspiratory oxygen concentration | |
| CA2726604C (en) | Ventilator apparatus and system for ventilation | |
| US9089657B2 (en) | Methods and systems for gating user initiated increases in oxygen concentration during ventilation | |
| US20120090611A1 (en) | Systems And Methods For Controlling An Amount Of Oxygen In Blood Of A Ventilator Patient | |
| US20090320836A1 (en) | Method For Regulating Treatment Based On A Medical Device Under Closed-Loop Physiologic Control | |
| JP2015037579A5 (en) | ||
| JP7086074B2 (en) | System for CO2 removal | |
| US20230173208A1 (en) | Flow therapy system and method | |
| CN114028677A (en) | Breathing machine air pressure adjusting and monitoring system and application thereof | |
| CN114949523A (en) | Intelligent breathing machine system with oxyhemoglobin saturation control function and control method | |
| WO2022141125A1 (en) | Respiratory support device and control method therefor, and storage medium | |
| KR101853039B1 (en) | Method for automatic cotrolling medical ventilator | |
| CN111991662B (en) | Intelligent system for automatically providing oxygen treatment scheme | |
| WO2023004542A1 (en) | Medical ventilation device and ventilation control method therefor, and storage medium | |
| US20230157574A1 (en) | End tidal carbon dioxide measurement during high flow oxygen therapy | |
| Gill et al. | Non-invasive ventilatory support | |
| CN113908389A (en) | Control method of respirator for treating pulmonary capillary dysfunction and respirator | |
| CN116474221A (en) | Respiratory system for rapid conversion | |
| Naritaka et al. | Clinical Experience with Smart Care for Respiratory Managementafter Esophageal Cancer Surgery | |
| Kuhl et al. | EMS Portable Ventilator Management | |
| Andrus | Tutorial: Mechanical ventilation in the emergency department | |
| Chakraborty | BSUH Paediatric Guidelines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |