Oxygen therapy instrument control system, control method and storage medium

Abstract

The invention discloses an oxygen therapy instrument control system and method and a storage medium, and the system comprises an oxygen saturation obtaining module which is used for obtaining the current blood oxygen saturation value of a user; the air and oxygen flow control module is used for controlling the mixed air and oxygen flow; the oxygen concentration control module is used for controlling the concentration of oxygen in the air-oxygen gas; and the analysis control module is used for inputting the initial air-oxygen flow and the oxygen concentration, and carrying out stepped control adjustment on the air-oxygen flow and the oxygen concentration according to the current blood oxygen saturation value of the user, so that the equipment parameters of the oxygen therapy instrument gradually approach to the body characteristics of the user. Gradient adjustment and real-time calculation can be carried out, adjustment is accurate, intelligent regulation and control are achieved, it is guaranteed that the oxygen therapy instrument is suitable for the physical condition of a user in real time, real-time manual adjustment is not needed, and discomfort of the user or oxygen waste caused by inapplicable parameters is also avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen therapy apparatus, in particular to an oxygen therapy apparatus control system, a control method and a storage medium. BACKGROUND

[0002] An oxygen therapy apparatus is a medical device used to treat respiratory diseases, mainly by providing high-concentration oxygen (usually 95%-99%) to help patients alleviate symptoms and improve quality of life. Oxygen therapy apparatus is widely used in the treatment of chronic obstructive pulmonary disease (COPD), lung cancer, asthma, angina pectoris, high altitude reaction and other diseases. Here are some basic information about oxygen therapy apparatus; hyperbaric oxygen therapy: hyperbaric oxygen therapy is a treatment method that directly inputs oxygen with a purity higher than 95% into the lungs of patients through a special helmet or mask, to rapidly increase blood oxygen saturation and improve local hypoxia. Hypobaric oxygen therapy: hypobaric oxygen therapy is a treatment method that gradually adapts the body by continuously inhaling oxygen with a certain concentration to alleviate hypoxia symptoms. The commonly used pure oxygen concentration is between 20%-40%. Oxygen therapy device: including air supply device, pressure reducing device, heating device, mask, humidification device and other parts, used to provide a safe and comfortable oxygen environment for patients. Use method: according to the patient's condition and physical condition, follow the doctor's advice, choose the appropriate oxygen inhalation method, such as continuous oxygen inhalation, intermittent oxygen inhalation, etc., and closely observe the patient's symptoms during use. Matters needing attention: when using the oxygen therapy apparatus, the following points should be paid attention to: strictly follow the doctor's advice and the operation rules of the equipment; regularly maintain and check the equipment to ensure that the equipment is in good condition; avoid inhaling other gases or liquids during oxygen inhalation to prevent fire; turn off all equipment after use and properly dispose of it according to the doctor's advice.

[0003] In summary, as a non-drug treatment method, oxygen therapy apparatus has significant effect in treating respiratory diseases, but attention should be paid to safety and rationality during use to achieve the best treatment effect, and it needs to be used under the guidance of a professional doctor. The existing oxygen therapy apparatus control needs to be operated by a professional doctor, and the parameters of the equipment will change over time after adjustment, which cannot completely match the user's physical signs, causing user discomfort or oxygen waste. SUMMARY

[0004] Based on the technical problems existing in the background technology, the present application proposes an oxygen therapy apparatus control system, a control method and a storage medium, which can adjust the gradient and calculate in real time, accurate adjustment, intelligent control, and ensure that the oxygen therapy apparatus is suitable for the user's physical condition in real time, without real-time human adjustment, and avoids user discomfort or oxygen waste caused by unsuitable parameters.

[0005] The oxygen therapy apparatus control system proposed by the present application comprises:

[0006] an oxygen saturation acquisition module configured to acquire a current blood oxygen saturation value SpO2 of a user;

[0007] an air-oxygen flow control module configured to control the flow of air and oxygen;

[0008] an oxygen concentration control module configured to control the oxygen concentration FiO2 of the air-oxygen gas;

[0009] an analysis control module configured to input a preset air-oxygen flow q and oxygen concentration FiO2, and

[0010] determine whether the current blood oxygen saturation value SpO2 belongs to a target blood oxygen saturation range, if yes, no adjustment is performed; if no, the flow weight coefficient a and the oxygen concentration weight coefficient β are calculated according to the current air-oxygen flow q and oxygen concentration FiO2, and

[0011] determine whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β, if yes, it is determined that flow adjustment is the adjustment item, and the air-oxygen flow q is increased or decreased by one adjustment unit; if no, it is determined that oxygen concentration adjustment is the adjustment item, and the oxygen concentration FiO2 is decreased or increased by one adjustment unit; until the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range.

[0012] Preferably, the oxygen saturation acquisition module comprises:

[0013] a value acquisition module configured to obtain a detected blood oxygen saturation value SpO2' of the user;

[0014] a value correction module configured to correct the detected blood oxygen saturation value SpO2' and obtain the current blood oxygen saturation value SpO2.

[0015] Preferably, the value correction module corrects the method steps as follows:

[0016] S11: obtaining a standard blood oxygen saturation value SpO2" by analyzing a blood sample;

[0017] S12: constructing a detection curve of the detected blood oxygen saturation value SpO2' and the standard blood oxygen saturation value SpO2" with respect to the use time of the oxygen therapy instrument, respectively;

[0018] S13: calculating the current blood oxygen saturation value SpO2 = SpO2' + ΔS according to the standard blood oxygen saturation value SpO2", wherein ΔS is the detection deviation of the blood oxygen saturation value corresponding to the use time of the oxygen therapy instrument.

[0019] Preferably, the calculation method of the detection deviation ΔS is as follows:

[0020] S131: numbering the standard blood oxygen saturation value SpO2" to obtain SpO2i the number of the standard blood oxygen saturation value SpO2

[0021] S132: calculate the detection deviation ΔS = ΔS i + (T-t i )ΔS', wherein:

[0022] ΔS i is the detection deviation corresponding to the standard blood oxygen saturation value SpO2 i of the number i; T is the usage time corresponding to the current time point; t i is the usage time of the oxygen therapy instrument corresponding to the adoption time of the standard blood oxygen saturation value SpO2 i of the number i; and ΔS' is the reciprocal of the deviation.

[0023] ΔS i = SpO2 i ' - SpO2 i "

[0024] SpO2i' is the detection curve value corresponding to the usage time of the oxygen therapy instrument corresponding to the adoption time of the standard blood oxygen saturation value SpO2

[0025]

[0026] Preferably, the calculation method of the flow weight coefficient a is:

[0027]

[0028] wherein a j is the value of the influence coefficient of the number j of the flow weight coefficient a; j is the number of the influence coefficient of the flow weight coefficient a; and J is the total number of the influence coefficients of the flow weight coefficient a.

[0029] Preferably, the influence coefficients of the flow weight coefficient a include a carbon dioxide retention influence, a tolerance influence coefficient, and a utilization influence coefficient.

[0030] Preferably, the calculation method of the oxygen concentration weight coefficient β is:

[0031]

[0032] wherein β k is the value of the influence coefficient of the number k of the oxygen concentration weight coefficient β; k is the number of the influence coefficient of the oxygen concentration weight coefficient β; and K is the total number of the influence coefficients of the oxygen concentration weight coefficient β.

[0033] Preferably, the influence coefficients of the oxygen concentration weight coefficient β include a carbon dioxide blockage coefficient and a carrying influence coefficient.

[0034] The control method of the oxygen therapy instrument is applied to the oxygen therapy instrument control system, and steps of the method are as follows:

[0035] S1: acquiring a current blood oxygen saturation value SpO2 of a user through an oxygen saturation acquisition module;

[0036] S2: controlling air-oxygen flow through an air-oxygen flow control module, and controlling oxygen concentration FiO2 in air-oxygen gas through an oxygen concentration control module;

[0037] S3: inputting preset air-oxygen flow q and oxygen concentration FiO2 to an analysis control module;

[0038] S4: determining whether the current blood oxygen saturation value SpO2 belongs to a target blood oxygen saturation range by the analysis control module, if yes, no adjustment is performed, and if no, S5 is executed;

[0039] S5: calculating flow weight coefficient a and oxygen concentration weight coefficient β according to the current air-oxygen flow q and oxygen concentration FiO2;

[0040] S6: determining whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β, if yes, S7 is executed, and if no, S8 is executed;

[0041] S7: determining that flow adjustment is an adjustment item, and increasing or decreasing air-oxygen flow q of an adjustment unit;

[0042] S8: determining that oxygen concentration adjustment is an adjustment item, and decreasing or increasing oxygen concentration FiO2 of an adjustment unit, and executing S4.

[0043] The computer readable storage medium provided by the present application stores a computer program, and the computer program is executed by a processor to realize the control method.

[0044] The present application has the following beneficial technical effects:

[0045] The oxygen therapy instrument control system of the present application can form gradient adjustment, has a small adjustment range, gradually approaches the most suitable parameters of the user, and realizes intelligent control. The method needs to change slowly to avoid causing physical discomfort due to too fast adjustment, and facilitates detection of physical parameters. The method can consider carbon dioxide retention factors, tolerance factors, utilization factors, carrying factors, etc., avoids user discomfort caused by various factors, ensures that the parameters of the oxygen therapy instrument are always adapted to the physical characteristics of the user, and greatly saves oxygen and avoids waste. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 The structure block diagram of the oxygen therapy instrument control system provided by the present application is shown in the figure;

[0047] Figure 2A flowchart of the oxygen therapy instrument control method according to the present application is shown in the figure;

[0048] Figure 3 A flowchart of the numerical correction method of the numerical correction module in the oxygen therapy instrument control system according to the present application is shown in the figure. DETAILED DESCRIPTION

[0049] The present application will be further described below with reference to specific embodiments.

[0050] Embodiment 1

[0051] Reference Figure 1 The oxygen therapy instrument control system according to the present application is used to intelligently control the air-oxygen flow and oxygen concentration of the oxygen therapy instrument, so as to adapt to the current physical condition of the user. The oxygen therapy instrument control system comprises:

[0052] An oxygen saturation acquisition module is used to acquire the current blood oxygen saturation value SpO2 of the user. The blood oxygen saturation value is the percentage of the volume of oxygenated hemoglobin combined with oxygen in the blood to the total volume of hemoglobin that can be combined, i.e., the concentration of blood oxygen in the blood. It is an important physiological parameter of the respiratory cycle and an important indicator for evaluating the respiratory capacity of the human body. When the respiratory system of the body has problems or other symptoms, the respiratory capacity of the human body will decrease, or in other words, the oxygen acquisition capacity of the body is insufficient. In order to maintain the stability of the life characteristics of the human body and ensure a certain blood oxygen saturation of the human body, it is an indispensable factor. The blood oxygen saturation value can be the blood oxygen saturation obtained by detecting with a finger cuff type photoelectric sensor. When measuring, the finger cuff type photoelectric sensor only needs to be worn on the finger of the human body, the finger is used as a transparent container containing hemoglobin, and near-infrared light of two wavelengths is used as the incident light source, the two light sources are 660 nm and 940 nm wavelength light. Specifically, a light-emitting diode can be used for emission. The light source passes through the tissue bed of the finger and is then received by a light receiver, and the received light transmission intensity is obtained to calculate the hemoglobin concentration and the blood oxygen saturation. The light receiver measures the change in light intensity after the two wavelengths of light pass through the capillary network, and calculates the ratio of oxygen and hemoglobin to total hemoglobin. The measurement range of blood oxygen is 0-100%, which provides a continuous non-invasive blood oxygen measurement instrument for clinical use. The current blood oxygen saturation value SpO2 of the user can be obtained in real time through this detection method. The blood oxygen saturation value is an evaluation of the oxygen carrying capacity of hemoglobin. The blood oxygen saturation value SpO2 is acquired by the oxygen saturation acquisition module, and the data can be updated in real time, and the obtained data is timely, which provides the possibility for us to evaluate the physical state of the user in real time.

[0053] Specifically, the oxygen saturation obtaining module can include a value obtaining module and a value correcting module. The value obtaining module is configured to obtain a detected blood oxygen saturation value SpO2' of the user, which can be obtained by using an existing detection device. The specific results and principles are prior art and will not be described here. The value correcting module is configured to correct the detected blood oxygen saturation value SpO2' and obtain a blood oxygen saturation value SpO2.

[0054] Referring to Figure 3 , the specific method for correction by the value correcting module is as follows:

[0055] (1) A standard blood oxygen saturation value SpO2" is obtained by detection. Since the blood oxygen saturation obtained by detection using a finger cuff type photoelectric sensor has a certain deviation, it is more accurate to obtain the oxygen saturation data by blood sampling and blood sample detection for a patient. However, the blood sampling and detection method is relatively cumbersome, the detection period is relatively long, and the blood oxygen saturation value cannot be obtained in real time. However, the data obtained by detection is relatively accurate. The standard blood oxygen saturation value SpO2" is obtained by analyzing the blood sample. The detected blood oxygen saturation value SpO2' and the standard blood oxygen saturation value SpO2" correspond to each other, and the detection subject is the same object. Details are not described here.

[0056] (2) A plane coordinate system is constructed. The horizontal coordinate of the plane coordinate system is the use time of the oxygen therapy instrument. Here, the use time is not the actual time, but the cumulative use time of the oxygen therapy instrument. Of course, it can also be the cumulative use time of the initialized or formatted historical use time. Details are not described here. The vertical coordinate is the oxygen saturation value. Then, the detected blood oxygen saturation value SpO2' and the standard blood oxygen saturation value SpO2" and their corresponding oxygen therapy instrument use time are implanted into the coordinate system to construct a detection curve and a standard curve. The value of the detected blood oxygen saturation value SpO2' is large, and these values can be sequentially connected to obtain a detection curve. Of course, some discrete data can be removed to avoid interference caused by individual abnormal detection data (generally device abnormalities).

[0057] (3) The standard blood oxygen saturation value SpO2" has a small value, and basically one user or interval blood sampling is performed, and then the standard blood oxygen saturation value SpO2" is obtained by detection. Therefore, the values of the standard curve are interval, and the standard blood oxygen saturation value SpO2" is numbered to obtain a standard blood oxygen saturation value SpO2 i ", where i is the number of the standard blood oxygen saturation value SpO2". Then, a detection deviation value ΔS = ΔS i +(T-t i )ΔS' is calculated, where ΔS i is the deviation value corresponding to the numbered i standard blood oxygen saturation value SpO2", and ΔS i=Sp02 i ′-SpO2 i ", SpO2 i ′ represents the standard blood oxygen saturation value SpO2 for number i. i "The sampling time corresponds to the value of the detection curve corresponding to the usage time, and ΔS′ is the reciprocal of the deviation. Its value can be obtained from equipment parameters or from historical data. Specifically, it can be..." Where T is the usage time corresponding to the current time point, t i The usage time corresponding to the sampling time point of the standard blood oxygen saturation value SpO2″ is t. i-1 Standard blood oxygen saturation value SpO2 i-1 "The usage time corresponding to the sampling time point. This method can be used to calculate the detection deviation value. Based on the detection deviation value, the value is corrected, which can eliminate inherent deviation values ​​and trend deviation values. Here, the inherent deviation value is reflected by the deviation value, and the trend deviation value is reflected by the reciprocal of the deviation value."

[0058] To facilitate the correction of the current oxygen saturation value SpO2′ at the current usage time, we define i as the number of the most recently sampled standard oxygen saturation value SpO2″. This allows us to predictively correct the current oxygen saturation value SpO2′. The current oxygen saturation value SpO2 = SpO2′ + ΔS′, where SpO2′ is the oxygen saturation value at the current usage time. The detection deviation value ΔS can be positive or negative, which will not be elaborated here. For example, a blood sample was taken at 8:00 AM the day before yesterday, and the standard oxygen saturation value SpO2′ was obtained. 1 "The result was 96%. Blood samples were taken at 8:00 AM this morning to obtain the standard blood oxygen saturation value (SpO2)." 2 "The SpO2 level was 95%. We obtained the SpO2 value by using a finger-type photoelectric sensor placed on the patient's finger two days ago and this morning at 8:00 AM." 1 And the detection of blood oxygen saturation value SpO2 2 The percentages are 95.5% and 94.4% respectively. Here, our horizontal axis is in days, ΔS 1 =0.5%, ΔS 2 =0.6%, The current time is 8 PM. We obtained a blood oxygen saturation value (SpO2″) of 94.6%. Therefore, we calculated ΔS = ΔS i +(Tt i)ΔS' = 0.6% + 0.05% x 0.5 = 0.625%, then we can correct the current blood oxygen saturation value SpO2 to 95.225%, of course this is just a simple example, other specific circumstances are not described here.

[0059] The air-oxygen flow control module is used to control the mixed air-oxygen flow. Specifically, the prior art can be controlled by a control valve. The existing oxygen therapy instrument can include a flow sensor and a turbine system. The turbine system is connected to the oxygen source and the air through the pipeline. The flow sensor is installed in the pipeline, and the control valve is arranged in the pipeline. The air-oxygen flow q here is the sum of the mixed air and oxygen flow, that is, the high-flow air-oxygen flow we need to adjust. The air and oxygen enter the turbine system through the pipeline for sufficient mixing to obtain air-oxygen gas. The air-oxygen flow q is adjusted to maintain a range of 8-80 L / min. The air-oxygen flow q is the sum of the mixed gas flow, and we can control the air-oxygen flow q by controlling the air and oxygen flow q1 and q2 respectively. The air-oxygen flow q = q1 + q2.

[0060] The oxygen concentration control module is used to control the oxygen concentration FiO2 in the air-oxygen gas. In this embodiment, we can control the oxygen concentration in the air-oxygen gas by controlling the air and oxygen flow q1 and q2 respectively. The oxygen concentration in the air is 21%, and the oxygen concentration we obtain is 100%. We calculate We calculate the air and oxygen flow q1 and q2 by combining the air-oxygen flow q = q1 + q2, so that we can obtain the air and oxygen flow q1 and q2. Then by controlling the air and oxygen flow q1 and q2, we can control the air-oxygen flow and the oxygen concentration. For example, we need the oxygen concentration FiO2 in the air-oxygen gas to be 45%, and the air-oxygen flow q to be 30 L / min. Then we calculate q1 = 21.1 L / min and q2 = 9.9 L / min. Then we control the air flow to be 21.1 L / min and the oxygen flow to be 9.9 L / min, thereby completing the control of the air-oxygen flow and the oxygen concentration in the air-oxygen gas. The control is more accurate and will not cause waste of oxygen.

[0061] The analysis control module is used to control the air-oxygen flow q and the oxygen concentration FiO2 according to the current blood oxygen saturation value SpO2 of the user. In order to quickly improve the physical signs of the user, we can give a more appropriate initial air-oxygen flow q and oxygen concentration FiO2 according to the current condition of the user. Of course, the initial air-oxygen flow q and oxygen concentration FiO2 do not need to be particularly accurate, and the oxygen therapy instrument control system will be optimized, so it does not need to be controlled by a professional doctor, and the use will be more convenient. The current condition of the user generally includes age, gender, weight, disease, etc. Generally, in order to be safe, the initial air-oxygen flow q will be set lower. For example, type I respiratory failure: the initial air-oxygen flow q is set to 20-40 L / min; type II respiratory failure: the initial air-oxygen flow q is set to 15-30 L / min. The oxygen concentration FiO2 will be set higher, generally 95-100%, and can be refined according to the actual situation, which will not be described in detail here.

[0062] Then, it is judged whether the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range. If yes, no adjustment is made. If no, the flow weight coefficient a and the oxygen concentration weight coefficient β are calculated according to the current air-oxygen flow q and the oxygen concentration FiO2, and the larger one of the flow weight coefficient a and the oxygen concentration weight coefficient β is taken as the adjustment item, and the adjustment item is gradient adjusted until the current blood oxygen saturation value SpO2 reaches the target blood oxygen saturation range. Specifically, the flow weight coefficient a and the oxygen concentration weight coefficient β can be calculated, it is judged whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β. If yes, it is determined that the flow adjustment is the adjustment item, and the air-oxygen flow q is increased (or decreased) by one adjustment unit. If no, the oxygen concentration FiO2 is reduced (or increased) by one adjustment unit, until the current blood oxygen saturation value SpO2 reaches the target blood oxygen saturation range. That is, it is judged whether the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range. If yes, the adjustment is stopped. If no, the adjustment is continued.

[0063] When the adjustment matter is flow adjustment, one adjustment unit can be 1-10 L / min of air-oxygen flow q, wherein the smaller the value, the more accurate the adjustment, but the sensitivity is poor, and the adjustment time is longer, generally 3-6 L / min. When the adjustment matter is oxygen concentration, one adjustment unit can be 1%-20% of the oxygen concentration FiO2, wherein the smaller the value, the more accurate the adjustment, but the sensitivity is poor, and the adjustment time is longer, generally 5%-10%, which is not described in detail here. This method can form gradient adjustment, small adjustment range, gradually close to the user's optimal parameters, and realize intelligent control. Of course, the adjustment unit can not be a constant value, it can be large first and small later, which avoids over-adjustment, which is not described in detail here. The target blood oxygen saturation range can be a range or a value, which needs to be determined according to the user's needs, generally 92-96%, which is not described in detail here. Of course, when the current blood oxygen saturation value SpO2 is less than the target blood oxygen saturation range, the air-oxygen flow q and the oxygen concentration FiO2 are increased accordingly. When the current blood oxygen saturation value SpO2 is greater than the target blood oxygen saturation range, the air-oxygen flow q and the oxygen concentration FiO2 are decreased accordingly. Initially, the flow bias coefficient a is large, and the air-oxygen flow q is decreased, and the oxygen concentration bias coefficient β is large, and the oxygen concentration FiO2 is decreased, that is, the adjustment is who the adjustment matter is, that is, the targeted adjustment. Through this method of control, gradient adjustment can be performed, and real-time calculation can be performed, the adjustment is accurate, intelligent control is realized, the oxygen therapy instrument is suitable for the user's physical condition in real time, real-time adjustment is not needed, and user discomfort or oxygen waste caused by unsuitable parameters is avoided.

[0064] The flow bias coefficient a and the oxygen concentration bias coefficient β are related to the numerical value of the flow and the oxygen concentration, and in various cases, the flow bias coefficient a and the oxygen concentration bias coefficient β need to be set correspondingly. We can obtain the flow bias coefficient a and the oxygen concentration bias coefficient β by searching a pre-set flow and oxygen concentration-bias coefficient information table according to the current flow and oxygen concentration. The flow and oxygen concentration-bias coefficient information table needs to be set according to the user's physical condition, which is irrelevant to the present embodiment, and the specific content is not described in detail here.

[0065] Of course, the flow bias coefficient a and the oxygen concentration bias coefficient β can also be obtained by calculation, the flow bias coefficient a and the oxygen concentration bias coefficient β are calculated according to the current flow and oxygen concentration, and the specific content is not described in detail here. Wherein a jis the value of the influence coefficient of the flow weighting coefficient a numbered j; j is the number of the influence coefficient of the flow weighting coefficient a; J is the total number of the influence coefficient of the flow weighting coefficient a, j = 1, ---, J. The main influencing factors of the flow weighting coefficient a can include, but are not limited to, carbon dioxide retention factors, tolerance factors, utilization factors, etc., at this time a1 can be a carbon dioxide retention influence, a2 can be a tolerance influence coefficient, and a3 can be a utilization influence coefficient. Each parameter can be a reference quantity without unit, and of course this is only a simple example, and real-time factor updating can be performed according to experiments and experience.

[0066] Specifically, the carbon dioxide retention influence a1 can be obtained according to experiments on the upper respiratory tract of the user. The carbon dioxide retention of each user can be different in the degree of sensitivity to the flow of air and oxygen, and can be obtained by calculating historical data, for example, the user has carbon dioxide retention, the flow of air and oxygen is increased, and then the amount of reduction of carbon dioxide retention is recorded to obtain the calculation. Specifically, the carbon dioxide retention influence a1 can be obtained by the following formula: wherein PaCO2 is the current carbon dioxide partial pressure, PaCO2' is the standard carbon dioxide partial pressure, and n is a sensitivity coefficient, generally 0.5-3. For example, the current carbon dioxide partial pressure PaCO2 is 48 mmHg, the standard carbon dioxide partial pressure PaCO2' is 45 mmHg, and n is 1.2, and then the carbon dioxide retention influence a1 = 3.7 is obtained by calculation. Of course, this is only a simple example, and specific values are not described herein.

[0067] The tolerance influence coefficient a2 can be determined according to the tolerance of the user, and the calculation process can be determined according to the current flow of air and oxygen q and the tolerance flow of air and oxygen Q, and can be the tolerance influence coefficient wherein Q is the tolerance flow of air and oxygen, q is the current flow of air and oxygen, and q' is the air and oxygen flow tolerance width, generally 2-10 L / min, and specific values are not described herein. For example, the tolerance flow of the user is 40 L / min. The current flow of air and oxygen is 36 L / min, and the air and oxygen flow tolerance width is 6 L / min, and then the tolerance influence coefficient a2 = 0.5 can be calculated. Of course, this is only a simple example and is not universal. Through this method, the tolerance can be evaluated, and when the tolerance flow is approached, the tolerance influence coefficient a2 will be exponentially resistant, avoiding the discomfort caused by tolerance.

[0068] The influence coefficient a3 needs to be monitored and calculated in real time. It is mainly determined by factors such as the oxygen flow rate q and the equipment structure; a higher flow rate q results in lower utilization. Specifically, the oxygen flow rate q can be increased or decreased by the aforementioned adjustment unit, with the increase or decrease in blood oxygen saturation recorded. The result is then obtained by dividing the increase or decrease in blood oxygen saturation by the number of adjustment units. Generally, the influence coefficient a3 is relatively small, considered to be between 1 and 1.5. However, this is just a simple example and not universally applicable; other values ​​will not be elaborated upon here.

[0069] Similarly, the oxygen concentration degravity coefficient β can also be obtained through calculation. Where β k Let β1 be the influence coefficient numbered k for the oxygen concentration bias coefficient β; k is the number of the influence coefficient β; K is the total number of influence coefficients for the oxygen concentration bias coefficient β, k = 1, ..., K. The main influencing factors of the oxygen concentration bias coefficient β can include, but are not limited to, carbon dioxide retention factors and carryover factors. In this case, β1 can be the carbon dioxide retention coefficient, and β2 is the carryover influence coefficient. Of course, this is just a simple example and can be updated in real time based on experiments and experience.

[0070] The carbon dioxide retention coefficient β1 can be obtained through experiments on the user's upper respiratory tract. Each user's sensitivity to air-oxygen flow rate may vary. When carbon dioxide retention increases, not only should the air-oxygen flow rate be increased, but the oxygen concentration can also be reduced. It can be calculated using historical data; for example, if a user experiences carbon dioxide retention, the oxygen concentration is reduced, and the amount of reduction in carbon dioxide retention is recorded for calculation. Alternatively, it can be obtained through... Where PaCO2 is the current partial pressure of carbon dioxide, PaCO2′ is the standard partial pressure of carbon dioxide, and n is the sensitivity coefficient, which is generally 1-3. Of course, this is just a simple example, and the specific values ​​will not be elaborated here.

[0071] The carryover effect coefficient β2 can be obtained by increasing or decreasing the oxygen concentration by the aforementioned adjustment unit, recording the increase or decrease in blood oxygen saturation, and then calculating the quotient of the increase or decrease in blood oxygen saturation to the number of adjustment units. This method requires slow changes to avoid causing discomfort due to rapid changes, while also facilitating the monitoring of vital signs. This method takes into account factors such as carbon dioxide retention, tolerance, utilization, and carryover, avoiding user discomfort caused by various factors. It ensures that the oxygen therapy device parameters are always adapted to the user's physical characteristics, while also significantly conserving oxygen and avoiding waste.

[0072] Example 2

[0073] ReferenceFigure 2 The oxygen therapy instrument control method provided by the application is applied to the oxygen therapy control system in Embodiment 1, and the specific method steps are as follows:

[0074] S1: obtaining the current blood oxygen saturation value SpO2 of the user through the oxygen saturation acquisition module;

[0075] S2: controlling the air-oxygen flow through the air-oxygen flow control module and controlling the oxygen concentration FiO2 in the air-oxygen gas through the oxygen concentration control module;

[0076] S3: inputting the preset air-oxygen flow q and oxygen concentration FiO2 to the analysis control module;

[0077] S4: determining whether the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range by the analysis control module, if yes, no adjustment is performed, and if no, S5 is executed;

[0078] S5: calculating the flow weight coefficient a and the oxygen concentration weight coefficient β according to the current air-oxygen flow q and oxygen concentration FiO2;

[0079] S6: determining whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β, if yes, S7 is executed, and if no, S8 is executed;

[0080] S7: determining that the flow adjustment is the adjustment item, and increasing or decreasing the air-oxygen flow q by one adjustment unit;

[0081] S8: determining that the oxygen concentration adjustment is the adjustment item, and decreasing or increasing the oxygen concentration FiO2 by one adjustment unit, and executing S4.

[0082] Embodiment 3

[0083] The computer readable storage medium provided by the application has a computer program stored thereon, and the computer program can implement the steps of the oxygen therapy instrument control method according to Embodiment 2 when executed by a processor. The oxygen therapy instrument control method can be applied in the form of software, for example, designed as a program that can be independently run by a computer readable storage medium, and the computer readable storage medium can be a U disk, designed as a U disk, and the U disk is designed as a program that starts the whole method through external triggering.

Claims

1. An oxygen therapy device control system, characterized by, The method comprises the following steps: an oxygen saturation acquisition module is configured to acquire a current blood oxygen saturation value SpO2 of a user; an air-oxygen flow control module is configured to control the flow of air and oxygen; an oxygen concentration control module is configured to control the oxygen concentration FiO2 in the air-oxygen gas; an analysis control module is configured to input a preset air-oxygen flow q and oxygen concentration FiO2, and determine whether the current blood oxygen saturation value SpO2 belongs to a target blood oxygen saturation range, if yes, no adjustment is performed; if no, a flow weight coefficient a and an oxygen concentration weight coefficient β are calculated according to the current air-oxygen flow q and oxygen concentration FiO2; and determine whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β, if yes, it is determined that flow adjustment is an adjustment item, and the air-oxygen flow q is increased or decreased by one adjustment unit; if no, it is determined that oxygen concentration adjustment is an adjustment item, and the oxygen concentration FiO2 is decreased or increased by one adjustment unit; until the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range.

2. The oxygen therapy apparatus control system of claim 1, wherein, The oxygen saturation acquisition module comprises: a numerical value acquisition module configured to acquire a detected blood oxygen saturation value SpO2' of the user; a numerical value correction module configured to correct the detected blood oxygen saturation value SpO2' and acquire the current blood oxygen saturation value SpO2.

3. The oxygen therapy device control system of claim 2, wherein, The numerical value correction module corrects the method steps as follows: S11: a standard blood oxygen saturation value SpO2" is obtained by analyzing a blood sample; S12: a detection curve of the detected blood oxygen saturation value SpO2' and the standard blood oxygen saturation value SpO2" and the use time of the oxygen therapy instrument is respectively constructed; S13: the current blood oxygen saturation value SpO2=SpO2'+ΔS is calculated according to the standard blood oxygen saturation value SpO2", wherein ΔS is the detection deviation of the blood oxygen saturation value corresponding to the use time of the oxygen therapy instrument.

4. The oxygen therapy device control system of claim 3, wherein, The calculation method of the detection deviation ΔS is as follows: S131 : Numbering the standard blood oxygen saturation value SpO2" to obtain SpO2 i where i is the number of the standard blood oxygen saturation value SpO2". S132: Calculate the detection bias ΔS = ΔS i + (T - t i ) ΔS', where: ΔS i is the detection deviation corresponding to the standard blood oxygen saturation value SpO2 numbered i; T is the use time corresponding to the current time point; t i is the SpO2 numbered i i is the use time of the oxygen therapy instrument corresponding to the time point; and ΔS' is the reciprocal of the deviation. ΔS i = SpO2 i ' - SpO2 i " SpO2 i ′ is the number i of the standard blood oxygen saturation value SpO2" corresponding to the oxygen therapy instrument use time corresponding to the detection curve value; 5. The oxygen therapy apparatus control system of claim 1, wherein, The calculation method of the flow weight coefficient a is as follows: wherein a j is the value of the influence coefficient of the flow weighting coefficient a numbered j; j is the number of the influence coefficient of the flow weighting coefficient a; J is the total number of influence coefficients of the flow weighting coefficient a.

6. The oxygen therapy apparatus control system of claim 5, wherein, The influence coefficient of the flow weight coefficient a includes a carbon dioxide retention influence, a tolerance influence coefficient and a utilization influence coefficient.

7. The oxygen therapy apparatus control system of claim 1, wherein, The calculation method of the oxygen concentration weight coefficient β is as follows: wherein β k is the value of the kth influence coefficient of the oxygen concentration biasing coefficient β; k is the number of the influence coefficient of the oxygen concentration biasing coefficient β; K is the total number of the influence coefficients of the oxygen concentration biasing coefficient β.

8. The oxygen therapy device control system of claim 7, wherein, The influence coefficient of the oxygen concentration weight coefficient β includes a carbon dioxide blocking coefficient and a carrying influence coefficient.

9. A control method of an oxygen therapy apparatus, characterized by, The method steps of the oxygen therapy instrument control system according to any one of claims 1-8 are as follows: S1: the current blood oxygen saturation value SpO2 of the user is acquired by the oxygen saturation acquisition module; S2: the air-oxygen flow is controlled by the air-oxygen flow control module, and the oxygen concentration FiO2 in the air-oxygen gas is controlled by the oxygen concentration control module; S3: the preset air-oxygen flow q and oxygen concentration FiO2 are input to the analysis control module; S4: the analysis control module determines whether the current blood oxygen saturation value SpO2 belongs to the target blood oxygen saturation range, if yes, no adjustment is performed; if no, S5 is executed; S5: the flow weight coefficient a and the oxygen concentration weight coefficient β are calculated according to the current air-oxygen flow q and oxygen concentration FiO2; S6: it is determined whether the flow weight coefficient a is greater than the oxygen concentration weight coefficient β, if yes, S7 is executed; if no, S8 is executed; S7: it is determined that flow adjustment is an adjustment item, and the air-oxygen flow q is increased or decreased by one adjustment unit; S8: determining that the oxygen concentration adjustment is the adjustment item, reducing or increasing the oxygen concentration FiO2 by one adjustment unit, and performing S4.

10. A computer readable storage medium storing a computer program, characterized in that, The computer program is executed by the processor to implement the control method of claim 9. The computer program is executed by the processor to implement the control method of claim 9.

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