Monitoring oxygen uptake system and method for intensive care unit nursing

Abstract

According to the monitorable oxygen uptake system and method for intensive care unit nursing, the oxygen uptake state in the main oxygen uptake channel is determined according to the breathing state of a critical patient, and feature matching is conducted on the oxygen uptake state and the pressure feature of oxygen positive pressure information; obtaining a characteristic matching coefficient between the inspiration pressure of the critical patient and the positive pressure of oxygen in the main oxygen inhalation channel; determining the compensation amount of the positive end-expiratory pressure in the exhaust passage when the critical patient exhales according to the airway resistance and the pressure gradient of the positive end-expiratory pressure information; according to the compensation amount and the feature matching coefficient, the pressure in the inspiration process and the expiration process in the oxygen inspiration process is subjected to fusion matching, the pressure confidence interval of the critical patient in the oxygen inspiration process is obtained, and the pressure of the oxygen inspiration channel is subjected to self-adaptive adjustment based on the pressure confidence interval. Based on the scheme, self-adaptive fusion adjustment of the positive oxygen pressure and the positive end-expiratory pressure in the oxygen uptake channel can be achieved, and therefore the oxygen uptake stability of the critical patient in the oxygen uptake process can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of oxygen inhalation control, and more specifically, to a monitorable oxygen inhalation system and method for intensive care unit nursing. Background Art

[0002] With the continuous advancement of medical technology, the rise of the concept of precision medicine requires more personalized adjustments to patient treatment. The development of oxygen inhalation equipment with monitoring functions based on information such as oxygen demand, respiratory status, and airway pressure of different patients has gradually become an important part of critical care and respiratory therapy. In recent years, due to respiratory failure and insufficient oxygen supply in critically ill patients, traditional oxygen inhalation methods have been unable to meet the needs of individualized and precise treatment.

[0003] Traditional oxygen inhalation systems are unable to dynamically adjust the oxygen supply according to real-time changes in the patient's breathing process, which often leads to problems of too much or too little oxygen. In particular, during exhalation, when the positive end-expiratory pressure in the exhaust channel is not fully compensated, it may cause airway obstruction or uncomfortable breathing for the patient. At the same time, systems with fixed flow or pressure cannot be adjusted according to the different oxygen demands in the inhalation and exhalation stages, which can easily cause oxygen waste or insufficient supply, affecting treatment effects and increasing medical costs. Traditional systems lack flexible adaptability and are difficult to meet the personalized and precise oxygen treatment needs of critically ill patients. Therefore, how to achieve adaptive fusion adjustment of oxygen positive pressure and exhalation positive end-expiratory pressure in the oxygen inhalation channel to improve the oxygen inhalation stability of critically ill patients during oxygen inhalation is a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides a monitorable oxygen inhalation system and method for intensive care unit nursing, which can achieve adaptive fusion adjustment of oxygen positive pressure and expiratory positive end-expiratory pressure in the oxygen inhalation channel, thereby improving the oxygen inhalation stability of critically ill patients during oxygen inhalation.

[0005] In a first aspect, the present application provides a method for regulating the pressure of an oxygen inhalation channel, comprising: Monitor the airflow pressure of different respiratory channels of critically ill patients during oxygen inhalation, and obtain the oxygen positive pressure information of the main oxygen inhalation channel and the positive end-expiratory pressure information of the exhaust channel; The oxygen absorption state in the main oxygen absorption channel is determined by combining the oxygen content in the main oxygen absorption channel with the respiratory state of the critically ill patient, and the oxygen absorption state is feature matched with the pressure characteristics of the oxygen positive pressure information to obtain a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen absorption channel; Determine the airway resistance of the exhaust channel of the critically ill patient during exhalation, and determine the compensation amount of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation through the airway resistance and the pressure gradient of the positive end-expiratory pressure information; The pressures during the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient to obtain a pressure confidence interval of critically ill patients during the oxygen inhalation process, and the pressure of the oxygen inhalation channel is adaptively adjusted based on the pressure confidence interval.

[0006] In some embodiments, determining the oxygen absorption state in the main oxygen absorption channel by combining the oxygen content in the main oxygen absorption channel with the respiratory state of the critically ill patient specifically includes: Extracting the concentration characteristics of oxygen in the main oxygen absorption channel from the oxygen content in the main oxygen absorption channel; Predict the oxygen demand characteristics of critically ill patients based on their respiratory status; The oxygen absorption state in the main oxygen absorption channel is determined according to the oxygen concentration characteristic and the oxygen demand characteristic.

[0007] In some embodiments, characteristic matching is performed on the pressure characteristics of the oxygen inhalation state and the oxygen positive pressure information to obtain a characteristic matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel, specifically including: Extracting the pressure characteristics in the main oxygen inhalation channel during inhalation of critically ill patients from the oxygen positive pressure information; The oxygen inhalation state and the pressure characteristic are matched to obtain a characteristic matching coefficient between the inhalation pressure of the critically ill patient and the positive oxygen pressure in the main oxygen inhalation channel.

[0008] In some embodiments, determining the airway resistance of the exhaust passage of the critically ill patient during exhalation specifically includes: Collect the expiratory flow and pressure of the exhaust channel of critically ill patients during each exhalation; Determining the airflow resistance of the exhaust channel during each exhalation according to the exhalation flow rate and the exhaust channel pressure during each exhalation; Determine the airway resistance of the exhaust passage during exhalation in critically ill patients based on all airflow resistances.

[0009] In some embodiments, determining the compensation amount of the positive end-expiratory pressure in the exhaust channel of a critically ill patient during exhalation by using the airway resistance and the pressure gradient of the positive end-expiratory pressure information specifically includes: Obtain the airflow rate of the exhaust channel of critically ill patients during exhalation; Extracting the pressure gradient of the exhaust passage of the critically ill patient during exhalation from the positive end-expiratory pressure information; Determine the resistance compensation value of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation by using the airflow rate and the airway resistance; The compensation amount of the positive end-expiratory pressure in the exhaust passage when the critically ill patient exhales is determined according to the resistance compensation value and the pressure gradient.

[0010] In some embodiments, adaptively adjusting the pressure of the oxygen inhalation channel based on the pressure confidence interval specifically includes: When the pressure of the oxygen inhalation channel is within the pressure confidence interval, the pressure of the oxygen inhalation channel is maintained without being adjusted; When the pressure of the oxygen inhalation channel is not within the pressure confidence interval, the pressure of the oxygen inhalation channel is dynamically adjusted until the adjusted pressure of the oxygen inhalation channel is within the pressure confidence interval.

[0011] In some embodiments, pressure sensors are used to monitor the airflow pressures of different respiratory passages of critically ill patients during oxygen inhalation.

[0012] In a second aspect, the present application provides a monitorable oxygen inhalation system for intensive care unit care, comprising a pressure regulating unit, wherein the pressure regulating unit comprises: A monitoring module is used to monitor the airflow pressure of different respiratory channels of critically ill patients during oxygen inhalation, and obtain the oxygen positive pressure information of the main oxygen inhalation channel and the positive end-expiratory pressure information of the exhaust channel; a processing module, for determining the oxygen inhalation state in the main oxygen inhalation channel by combining the oxygen content in the main oxygen inhalation channel with the respiratory state of the critically ill patient, performing feature matching on the oxygen inhalation state and the pressure characteristics of the oxygen positive pressure information, and obtaining a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel; The processing module is also used to determine the airway resistance of the exhaust channel when the critically ill patient exhales, and determine the compensation amount of the positive end-expiratory pressure in the exhaust channel when the critically ill patient exhales through the airway resistance and the pressure gradient of the positive end-expiratory pressure information; The execution module is used to integrate and adapt the pressures during the inhalation process and the exhalation process during oxygen inhalation according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient, obtain the pressure confidence interval of the critically ill patients during the oxygen inhalation process, and adaptively adjust the pressure of the oxygen inhalation channel based on the pressure confidence interval.

[0013] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned pressure regulation method for the oxygen inhalation channel.

[0014] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the computer implements the above-mentioned pressure regulation method for the oxygen inhalation channel when executing.

[0015] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects: The present application provides a monitorable oxygen inhalation system and method for intensive care unit nursing. The airflow pressures of different respiratory channels of critically ill patients during oxygen inhalation are monitored to obtain oxygen positive pressure information of the main oxygen inhalation channel and positive end-expiratory pressure information of the exhaust channel; the oxygen content in the main oxygen inhalation channel is combined with the respiratory state of the critically ill patient to determine the oxygen inhalation state in the main oxygen inhalation channel, and the pressure characteristics of the oxygen inhalation state and the positive oxygen pressure information are feature matched to obtain the characteristic matching coefficient between the inhalation pressure of the critically ill patient and the positive oxygen pressure in the main oxygen inhalation channel; the airway resistance of the exhaust channel during exhalation of the critically ill patient is determined, and the compensation amount of the positive end-expiratory pressure in the exhaust channel during exhalation of the critically ill patient is determined by the airway resistance and the pressure gradient of the positive end-expiratory pressure information; the pressure during the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient to obtain the pressure confidence interval of the critically ill patient during the oxygen inhalation process, and the pressure of the oxygen inhalation channel is adaptively adjusted based on the pressure confidence interval.

[0016] It can be seen that in the present application, the pressures of the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient, so as to obtain the pressure confidence interval of the critically ill patients during the oxygen inhalation process, and the pressure of the oxygen inhalation channel is adaptively adjusted based on the pressure confidence interval; firstly, the characteristic matching coefficient is determined to obtain the degree of matching between the oxygen inhalation demand and the positive pressure provided by the ventilator, and at the same time, a dynamic adjustment standard is formed by comprehensively considering different physiological factors. The characteristic matching coefficient can be used to adjust the oxygen pressure in real time to control the oxygen flow rate to ensure that the oxygen supply during the oxygen inhalation process is neither excessive nor insufficient, so as to ensure that the oxygen inhalation system can respond to the changes in different breathing stages of critically ill patients, avoid excessive or insufficient oxygen, and thus improve the stability of oxygen inhalation. At the same time, the oxygen inhalation system can accurately control the positive oxygen pressure to ensure that critically ill patients can get the appropriate amount of oxygen in each inhalation cycle, thereby improving The therapeutic effect can be improved by reducing the adjustment error of the ventilator; then, by determining the compensation amount of the positive end-expiratory pressure, the positive end-expiratory pressure value that needs to be applied to overcome the flow resistance in the exhaust channel and ensure smooth expiratory airflow can be obtained. The oxygen inhalation system can dynamically adjust the exhaust pressure when the critically ill patient exhales, ensure smooth airflow in the exhaust channel, and avoid excessive positive end-expiratory pressure affecting the respiratory efficiency, thereby effectively balancing the pressure distribution during exhalation, so that the critically ill patient can smoothly inhale oxygen during the oxygen inhalation process, and at the same time comfortably discharge the exhaust gas, reduce respiratory discomfort, and improve the oxygen efficacy. Subsequently, combined with the positive pressure adjustment during the inhalation process, the compensation amount ensures the airflow stability during the entire oxygen inhalation process, thereby further improving the breathing comfort and therapeutic effect of the critically ill patients; in summary, based on the above scheme, the adaptive fusion adjustment of the oxygen positive pressure and the exhaled positive end-expiratory pressure in the oxygen inhalation channel can be realized, thereby improving the oxygen inhalation stability of the critically ill patient during the oxygen inhalation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is an exemplary flow chart of a pressure regulating method for an oxygen inhalation channel according to some embodiments of the present application; Figure 2 It is a schematic diagram of the process of oxygen production by pressure swing adsorption shown in some embodiments of the present application; Figure 3 It is a schematic diagram of a process for implementing fusion adaptation according to some embodiments of the present application; Figure 4 is a schematic structural diagram of a pressure regulating unit according to some embodiments of the present application; Figure 5 It is a structural schematic diagram of a computer device for implementing a pressure regulation method for an oxygen inhalation channel according to some embodiments of the present application. DETAILED DESCRIPTION

[0019] In order to better understand the technical solution of the present application, the technical solution of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] refer to Figure 1 , which is an exemplary flow chart of a pressure regulating method of an oxygen absorption channel according to some embodiments of the present application, and the pressure regulating method of the oxygen absorption channel mainly includes the following steps: In step 101, the airflow pressures of different respiratory channels of a critically ill patient during oxygen inhalation are monitored to obtain oxygen positive pressure information of the main oxygen inhalation channel and positive end-expiratory pressure information of the exhaust channel.

[0021] It should be noted that, in the present application, the main oxygen inhalation channel refers to the main channel for providing oxygen to flow into the airway of critically ill patients; the oxygen positive pressure information refers to the pressure information of oxygen in the oxygen inhalation channel during oxygen inhalation, and the oxygen positive pressure refers to the positive exhaust channel pressure provided by the ventilator in the oxygen inhalation channel, which is used to assist critically ill patients in oxygen inhalation; the exhaust channel refers to the channel through which gas is discharged when critically ill patients exhale; the positive end-expiratory pressure information refers to the relevant information of the change of positive end-expiratory pressure in the airway during exhalation, and the positive end-expiratory pressure refers to the positive pressure higher than atmospheric pressure maintained in the exhaust channel at the end of each breathing cycle during oxygen inhalation, which is used to assist the waste gas exhaled by critically ill patients to be discharged from the exhaust channel.

[0022] In specific implementation, a pressure sensor is used to monitor the airflow pressures of different respiratory channels of critically ill patients during oxygen inhalation. The set of oxygen airflow pressures in the main oxygen inhalation channel within a specified time period (the default is the most recent week) can be used as the oxygen positive pressure information of the main oxygen inhalation channel, and the set of exhaust gas airflow pressures in the exhaust channel within the specified time period can be used as the positive end-expiratory pressure information of the exhaust channel.

[0023] In some embodiments, reference Figure 2 The figure is a schematic diagram of the process of pressure swing adsorption oxygen production shown in some embodiments of the present application. The figure shows the process of a typical pressure swing adsorption oxygen production module. The air first passes through a filter to remove impurities, and then enters the compressor for compression. The compressed air is cooled by a cooling pipeline to improve the adsorption efficiency; next, the air flows through two adsorption towers, which are filled with adsorbents. The pressure is changed periodically, that is, nitrogen is adsorbed under high pressure and released under low pressure, thereby achieving oxygen separation, and then the nitrogen in the air can be selectively adsorbed, leaving oxygen.

[0024] At the outlet of the adsorption tower, there is a solenoid valve that controls the discharge of nitrogen; the oxygen passing through the adsorption tower will pass through a flow meter and a sensor to monitor the flow and purity of the oxygen; then, the oxygen passes through a pressure-stabilizing valve and a one-way valve to ensure stable output of oxygen and prevent backflow; finally, the oxygen passes through a filter and an oxygen outlet and is supplied to users; the pressure swing adsorption oxygen production module is designed to provide oxygen efficiently and continuously, while achieving energy and resource savings through the recycling of adsorbents.

[0025] In step 102, the oxygen inhalation state in the main oxygen inhalation channel is determined by combining the oxygen content in the main oxygen inhalation channel with the respiratory state of the critically ill patient, and the oxygen inhalation state and the pressure characteristics of the oxygen positive pressure information are feature matched to obtain a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel.

[0026] In some embodiments, the following steps may be used to determine the oxygen absorption state in the main oxygen absorption channel by combining the oxygen content in the main oxygen absorption channel with the respiratory state of the critically ill patient: Extracting the concentration characteristics of oxygen in the main oxygen absorption channel from the oxygen content in the main oxygen absorption channel; Predict the oxygen demand characteristics of critically ill patients based on their respiratory status; The oxygen absorption state in the main oxygen absorption channel is determined according to the oxygen concentration characteristic and the oxygen demand characteristic.

[0027] It should be noted that in the present application, the oxygen inhalation state is a characteristic that reflects the current oxygen demand of critically ill patients; the concentration characteristic represents the characteristic of the oxygen concentration in the gas in the main oxygen inhalation channel; the respiratory state reflects the current respiratory condition of critically ill patients; and the oxygen demand characteristic represents the current oxygen supply required by critically ill patients.

[0028] In specific implementation, first, an oxygen concentration sensor (for example, an electrochemical sensor) can be used to monitor the oxygen concentration in the main oxygen inhalation channel in real time, and the set of oxygen concentrations per second in a preset time period (the default is the most recent 1 minute) can be used as the oxygen content in the main oxygen inhalation channel, so as to calculate the average value of the oxygen concentration in the oxygen content, the average rate of change of the oxygen concentration, and the fluctuation range of the oxygen concentration, and the set of the average value of the oxygen concentration, the average rate of change of the oxygen concentration, and the fluctuation range of the oxygen concentration can be used as the concentration characteristics of the oxygen in the main oxygen inhalation channel; then, the patient's respiratory state can be monitored in real time through a respiratory sensor, and a mapping model between the respiratory state and the oxygen demand can be established based on historical data and the respiratory state of real-time respiratory monitoring, so as to predict the oxygen demand characteristics of the swollen patient, such as the increase in the amount of oxygen required in the case of high respiratory rate or dyspnea; finally, a feature matching algorithm (for example, the least squares method) is used to perform feature fusion matching on the oxygen concentration feature and the oxygen demand feature, so as to use the result of the feature fusion matching as the oxygen inhalation state in the main oxygen inhalation channel.

[0029] In some embodiments, characteristic matching is performed on the pressure characteristics of the oxygen inhalation state and the oxygen positive pressure information to obtain a characteristic matching coefficient between the inhalation pressure of a critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel. The following steps can be used to achieve this: Extracting the pressure characteristics in the main oxygen inhalation channel during inhalation of critically ill patients from the oxygen positive pressure information; The oxygen inhalation state and the pressure characteristic are matched to obtain a characteristic matching coefficient between the inhalation pressure of the critically ill patient and the positive oxygen pressure in the main oxygen inhalation channel.

[0030] It should be noted that, in the present application, the feature matching coefficient reflects the degree of matching between the oxygen inhalation demand and the positive pressure provided by the ventilator; in specific implementation, first, a feature extraction algorithm (for example, an adaptive threshold method) can be used to extract the time domain characteristics of the airflow pressure in the oxygen positive pressure information as the pressure characteristics in the main oxygen inhalation channel during inhalation in critically ill patients, and the pressure characteristics represent the time domain characteristics of the positive pressure provided by the ventilator; then, the cosine similarity can be used to match the oxygen inhalation state and the pressure characteristics, that is, the cosine similarity between the oxygen inhalation state and the pressure characteristics is used as the feature matching coefficient between the inhalation pressure of critically ill patients and the positive oxygen pressure in the main oxygen inhalation channel.

[0031] In step 103, the airway resistance of the exhaust channel of the critically ill patient during exhalation is determined, and the compensation amount of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation is determined by the airway resistance and the pressure gradient of the positive end-expiratory pressure information.

[0032] In some embodiments, determining the airway resistance of the exhaust passage of a critically ill patient during exhalation may be achieved by the following steps: Collect the expiratory flow and pressure of the exhaust channel of critically ill patients during each exhalation; Determining the airflow resistance of the exhaust channel during each exhalation according to the exhalation flow rate and the exhaust channel pressure during each exhalation; Determine the airway resistance of the exhaust passage during exhalation in critically ill patients based on all airflow resistances.

[0033] It should be noted that, in the present application, airway resistance is a key parameter that describes the change of exhaust channel resistance over time; expiratory flow rate indicates the gas flow rate through the exhaust channel each time the patient exhales; exhaust channel pressure reflects the driving force encountered by the gas when passing through the exhaust channel; and airflow resistance indicates the obstructive force encountered by the airflow when flowing in the exhaust channel.

[0034] In the specific implementation, first, the expiratory flow rate of the exhaust channel during each exhalation of the critically ill patient during this oxygen inhalation process is collected through a flow sensor (for example, a thermal flow sensor), and the exhaust channel pressure is monitored by a pressure sensor to collect the exhaust channel pressure of the exhaust channel during each exhalation of the critically ill patient during this oxygen inhalation process; then, for each exhalation, the exhaust channel length and the exhaust channel radius can be obtained from the instruction manual of the exhalation device, and the ratio of the expiratory flow rate during exhalation to the density of CO2 can be used as the viscosity of the gas in the channel, so as to use the fluid mechanics model (for example, Poiseuille's law equation) to calculate the airflow resistance in the exhaust channel during exhalation, that is, airflow resistance = (8×gas viscosity in the channel×exhaust channel length) / (π×exhaust channel radius 4), and the airflow resistance in the exhaust channel during each exhalation can be obtained in the above manner; finally, the average of all airflow resistances can be used as the airway resistance of the exhaust channel of the critically ill patient during exhalation.

[0035] In some embodiments, determining the compensation amount of the positive end-expiratory pressure in the exhaust channel of a critically ill patient during exhalation by using the airway resistance and the pressure gradient of the positive end-expiratory pressure information can be achieved by the following steps: Obtain the airflow rate of the exhaust channel of critically ill patients during exhalation; Extracting the pressure gradient of the exhaust passage of the critically ill patient during exhalation from the positive end-expiratory pressure information; Determine the resistance compensation value of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation by using the airflow rate and the airway resistance; The compensation amount of the positive end-expiratory pressure in the exhaust passage when the critically ill patient exhales is determined according to the resistance compensation value and the pressure gradient.

[0036] It should be noted that, in the present application, the compensation amount refers to the positive end-expiratory pressure value that needs to be applied in order to overcome the flow resistance in the exhaust channel and ensure smooth expiratory airflow; the airflow rate refers to the amount of gas passing through the exhaust channel per unit time; the pressure gradient refers to the change in pressure per unit time (per second); the resistance compensation value indicates the compensation pressure that needs to be applied to overcome the flow resistance of the exhaust channel.

[0037] In specific implementation, first, a flow sensor can be used to measure the airflow rate of critically ill patients during each exhalation process in real time, so that the average of all airflow rates can be used as the airflow rate of the exhaust channel of the critically ill patients during exhalation; secondly, the difference in airflow pressures of adjacent acquisition intervals in the positive end-expiratory pressure information is divided by the number of seconds of the acquisition interval as the pressure gradient of each acquisition interval, and the average of the pressure gradients of all acquisition intervals can be used as the pressure gradient of the exhaust channel of the critically ill patients during exhalation; then, the product of the airflow rate and the airway resistance can be used as the resistance compensation value of the positive end-expiratory pressure in the exhaust channel of the critically ill patients during exhalation; finally, the ratio of the resistance compensation value to the pressure gradient can be used as the compensation amount of the positive end-expiratory pressure in the exhaust channel of the critically ill patients during exhalation.

[0038] In step 104, the pressures during the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient to obtain a pressure confidence interval of critically ill patients during oxygen inhalation, and the pressure of the oxygen inhalation channel is adaptively adjusted based on the pressure confidence interval.

[0039] In some embodiments, the pressures of the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient to obtain the pressure confidence interval of the critically ill patient during oxygen inhalation. Figure 3 The figure is a schematic diagram of the process of implementing fusion adaptation in some embodiments of the present application. In this embodiment, fusion adaptation can be implemented by the following steps: In step 1041, a positive end expiratory pressure curve during the exhalation process is determined by using an initial positive end expiratory pressure curve of the waste gas during the exhalation process and a compensation amount of the positive end expiratory pressure; In step 1042, a positive pressure curve during the inhalation process is determined according to the initial positive pressure curve of oxygen during the inhalation process and the characteristic matching coefficient; In step 1043, the positive end-expiratory pressure curve and the positive pressure curve are merged to obtain a pressure regulation curve of a critically ill patient during oxygen inhalation; In step 1044, the pressure confidence interval of the critically ill patient during oxygen inhalation is determined by the pressure regulation curve.

[0040] It should be noted that, in the present application, the pressure confidence interval represents the range of pressure adjustment adaptation during oxygen inhalation for critically ill patients; the positive end-expiratory pressure curve represents the curve of pressure changes over time in the exhaust channel during exhalation for critically ill patients; the positive pressure curve represents the curve of pressure changes over time in the main oxygen inhalation channel during inhalation for critically ill patients; the pressure regulation curve represents the comprehensive pressure change curve after adjustment according to the positive end-expiratory pressure and the positive pressure curve, so as to ensure the effectiveness of the oxygen inhalation process.

[0041] In specific implementation, first, the initial positive end-expiratory pressure curve of the exhaust gas during the exhalation process can be obtained from the central console of the oxygen inhalation device, so that the data points in the initial positive end-expiratory pressure curve that are lower than the preset positive end-expiratory pressure threshold are added with the compensation amount of the positive end-expiratory pressure to complete the compensation, and the compensated initial positive end-expiratory pressure curve is used as the positive end-expiratory pressure curve during the exhalation process; secondly, the initial positive pressure curve of oxygen during the inhalation process can be obtained from the central console of the oxygen inhalation device, so that the data points in the initial positive pressure curve that are higher than the preset positive pressure threshold are multiplied by the characteristic matching coefficient to complete the correction, and the corrected initial positive pressure curve is used as the positive pressure curve during the inhalation process; then, a series model based on fluid dynamics is initialized, and the positive end-expiratory pressure curve and the positive pressure curve are used as the pressure change sources of the series model, and the series model is used to fuse the positive end-expiratory pressure curve and the positive pressure curve in series to form a pressure regulation curve for critically ill patients during oxygen inhalation; finally, the interval from the minimum value to the maximum value in the pressure regulation curve can be used as the pressure confidence interval of critically ill patients during oxygen inhalation.

[0042] In some embodiments, the adaptive adjustment of the pressure of the oxygen inhalation channel based on the pressure confidence interval can be achieved by the following steps: When the pressure of the oxygen inhalation channel is within the pressure confidence interval, the pressure of the oxygen inhalation channel is maintained without being adjusted; When the pressure of the oxygen inhalation channel is not within the pressure confidence interval, the pressure of the oxygen inhalation channel is dynamically adjusted until the adjusted pressure of the oxygen inhalation channel is within the pressure confidence interval.

[0043] In specific implementation, when the pressure of the oxygen absorption channel is within the pressure confidence interval, the pressure of the oxygen absorption channel is maintained without adjustment; when the pressure of the oxygen absorption channel is not within the pressure confidence interval, the pressure regulating valve in the oxygen absorption device can be used to gradient adjust the pressure of the oxygen absorption channel, that is, each time the pressure is increased by a fixed increment (the default is 0.5kPa) until the pressure of the oxygen absorption channel is within the adjusted pressure confidence interval.

[0044] In addition, in another aspect of the present application, in some embodiments, the present application provides a monitorable oxygen inhalation system for intensive care unit nursing, the monitorable oxygen inhalation system for intensive care unit nursing includes a pressure regulating unit, reference Figure 4, which is a schematic diagram of the structure of a pressure regulating unit according to some embodiments of the present application, the pressure regulating unit includes: a monitoring module 201, a processing module 202 and an execution module 203, which are described as follows: Monitoring module 201, in this application, monitoring module 201 is mainly used to monitor the airflow pressure of different respiratory channels of critically ill patients during oxygen inhalation, and obtain oxygen positive pressure information of the main oxygen inhalation channel and positive end-expiratory pressure information of the exhaust channel; Processing module 202, in the present application, the processing module 202 is used to determine the oxygen inhalation state in the main oxygen inhalation channel by combining the oxygen content in the main oxygen inhalation channel with the respiratory state of the critically ill patient, and to perform feature matching on the pressure characteristics of the oxygen inhalation state and the oxygen positive pressure information to obtain a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel; It should be noted that the processing module 202 is also used to determine the airway resistance of the exhaust channel of the critically ill patient during exhalation, and determine the compensation amount of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation through the airway resistance and the pressure gradient of the positive end-expiratory pressure information; The execution module 203 in the present application is mainly used to fuse and adapt the pressures during the inhalation process and the exhalation process during oxygen inhalation according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient, obtain the pressure confidence interval of the critically ill patients during the oxygen inhalation process, and adaptively adjust the pressure of the oxygen inhalation channel based on the pressure confidence interval.

[0045] The above describes in detail the examples of the monitored oxygen inhalation system and method for intensive care unit care provided by the embodiments of the present application. It can be understood that in order to realize the above functions, the corresponding device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0046] In some embodiments, the present application also provides a computer device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned pressure regulation method for the oxygen inhalation channel.

[0047] In some embodiments, reference Figure 5, the dotted line in the figure indicates that the unit or the module is optional, and the figure is a structural schematic diagram of a computer device for implementing a pressure regulation method for an oxygen inhalation channel according to an embodiment of the present application. The pressure regulation method for the oxygen inhalation channel described in the above embodiment can be Figure 5 The computer device shown in the figure is implemented, and the computer device includes at least one processor 301, a memory 302 and at least one communication unit 305. The computer device can be a terminal device, a server or a chip.

[0048] The processor 301 may be a general-purpose processor or a special-purpose processor. For example, the processor 301 may be a central processing unit (CPU), which may be used to control the computer device, execute software programs, and process data of the software programs. The computer device may also include a communication unit 305 to implement signal input (reception) and output (transmission).

[0049] For example, the computer device may be a chip, the communication unit 305 may be an input and / or output circuit of the chip, or the communication unit 305 may be a communication interface of the chip, and the chip may be a component of a terminal device, a network device, or other devices.

[0050] For another example, the computer device may be a terminal device or a server, and the communication unit 305 may be a transceiver of the terminal device or the server, or the communication unit 305 may be a transceiver circuit of the terminal device or the server.

[0051] The computer device may include one or more memories 302, on which a program 304 is stored. The program 304 can be executed by the processor 301 to generate instructions 303, so that the processor 301 performs the method described in the above method embodiment according to the instructions 303. Optionally, data (such as a target audit model) can also be stored in the memory 302. Optionally, the processor 301 can also read the data stored in the memory 302, and the data can be stored at the same storage address as the program 304, or the data can be stored at a different storage address from the program 304.

[0052] The processor 301 and the memory 302 may be provided separately or integrated together, for example, integrated on a system on chip (SOC) of the terminal device.

[0053] It should be understood that each step of the above method embodiment can be completed by a hardware-based logic circuit or software-based instructions in the processor 301. The processor 301 can be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, such as discrete gates, transistor logic devices, or discrete hardware components.

[0054] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0055] For example, in some embodiments, the present application also provides a computer-readable storage medium, in which instructions or codes are stored. When the instructions or codes are run on a computer, the computer implements the above-mentioned pressure regulation method for the oxygen inhalation channel when executing.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for regulating the pressure of an oxygen inhalation channel, used for regulating the oxygen inhalation pressure in a monitorable oxygen inhalation system used for nursing in an intensive care unit, characterized in that: The steps include: Monitor the airflow pressure of different respiratory channels of critically ill patients during oxygen inhalation, and obtain the oxygen positive pressure information of the main oxygen inhalation channel and the positive end-expiratory pressure information of the exhaust channel; The oxygen absorption state in the main oxygen absorption channel is determined by combining the oxygen content in the main oxygen absorption channel with the respiratory state of the critically ill patient, and the oxygen absorption state is feature matched with the pressure characteristics of the oxygen positive pressure information to obtain a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen absorption channel; Determine the airway resistance of the exhaust channel of the critically ill patient during exhalation, and determine the compensation amount of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation through the airway resistance and the pressure gradient of the positive end-expiratory pressure information; The pressures during the inhalation process and the exhalation process during oxygen inhalation are fused and adapted according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient to obtain a pressure confidence interval of critically ill patients during the oxygen inhalation process, and the pressure of the oxygen inhalation channel is adaptively adjusted based on the pressure confidence interval.

2. The method according to claim 1, characterized in that The oxygen content in the main oxygen inhalation channel is combined with the respiratory status of the critically ill patient to determine the oxygen inhalation status in the main oxygen inhalation channel, including: Extracting the concentration characteristics of oxygen in the main oxygen absorption channel from the oxygen content in the main oxygen absorption channel; Predict the oxygen demand characteristics of critically ill patients based on their respiratory status; The oxygen absorption state in the main oxygen absorption channel is determined according to the oxygen concentration characteristic and the oxygen demand characteristic.

3. The method according to claim 1, characterized in that The characteristic matching coefficient between the inhalation pressure of the critically ill patient and the positive pressure of oxygen in the main oxygen inhalation channel is obtained by performing characteristic matching on the pressure characteristics of the oxygen inhalation state and the positive pressure of oxygen in the oxygen positive pressure information, specifically including: Extracting the pressure characteristics in the main oxygen inhalation channel during inhalation of critically ill patients from the oxygen positive pressure information; The oxygen inhalation state and the pressure characteristic are matched to obtain a characteristic matching coefficient between the inhalation pressure of the critically ill patient and the positive oxygen pressure in the main oxygen inhalation channel.

4. The method according to claim 1, characterized in that Determining the airway resistance of critically ill patients during exhalation specifically includes: Collect the expiratory flow and pressure of the exhaust channel of critically ill patients during each exhalation; Determining the airflow resistance of the exhaust channel during each exhalation according to the exhalation flow rate and the exhaust channel pressure during each exhalation; Determine the airway resistance of the exhaust passage during exhalation in critically ill patients based on all airflow resistances.

5. The method according to claim 1, characterized in that Determining the compensation amount of the positive end-expiratory pressure in the exhaust channel of a critically ill patient during exhalation by using the airway resistance and the pressure gradient of the positive end-expiratory pressure information specifically includes: Obtain the airflow rate of the exhaust channel of critically ill patients during exhalation; Extracting the pressure gradient of the exhaust passage of the critically ill patient during exhalation from the positive end-expiratory pressure information; Determine the resistance compensation value of the positive end-expiratory pressure in the exhaust channel of the critically ill patient during exhalation by using the airflow rate and the airway resistance; The compensation amount of the positive end-expiratory pressure in the exhaust passage when the critically ill patient exhales is determined according to the resistance compensation value and the pressure gradient.

6. The method according to claim 1, characterized in that Adaptively adjusting the pressure of the oxygen inhalation channel based on the pressure confidence interval specifically includes: When the pressure of the oxygen inhalation channel is within the pressure confidence interval, the pressure of the oxygen inhalation channel is maintained without being adjusted; When the pressure of the oxygen inhalation channel is not within the pressure confidence interval, the pressure of the oxygen inhalation channel is dynamically adjusted until the adjusted pressure of the oxygen inhalation channel is within the pressure confidence interval.

7. The method according to claim 1, characterized in that Use pressure sensors to monitor the airflow pressure in different respiratory channels of critically ill patients during oxygen inhalation.

8. A monitorable oxygen inhalation system for intensive care unit nursing, the monitorable oxygen inhalation system for intensive care unit nursing comprising a pressure regulating unit, characterized in that: The pressure regulating unit comprises: A monitoring module is used to monitor the airflow pressure of different respiratory channels of critically ill patients during oxygen inhalation, and obtain the oxygen positive pressure information of the main oxygen inhalation channel and the positive end-expiratory pressure information of the exhaust channel; a processing module, for determining the oxygen inhalation state in the main oxygen inhalation channel by combining the oxygen content in the main oxygen inhalation channel with the respiratory state of the critically ill patient, performing feature matching on the oxygen inhalation state and the pressure characteristics of the oxygen positive pressure information, and obtaining a feature matching coefficient between the inhalation pressure of the critically ill patient and the oxygen positive pressure in the main oxygen inhalation channel; The processing module is also used to determine the airway resistance of the exhaust channel when the critically ill patient exhales, and determine the compensation amount of the positive end-expiratory pressure in the exhaust channel when the critically ill patient exhales through the airway resistance and the pressure gradient of the positive end-expiratory pressure information; The execution module is used to integrate and adapt the pressures during the inhalation process and the exhalation process during oxygen inhalation according to the compensation amount of the positive end-expiratory pressure and the characteristic matching coefficient, obtain the pressure confidence interval of the critically ill patients during the oxygen inhalation process, and adaptively adjust the pressure of the oxygen inhalation channel based on the pressure confidence interval.

9. A computer device, characterized in that: The computer device includes a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the pressure regulation method for the oxygen absorption channel according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions or codes, and when the instructions or codes are executed on a computer, the computer implements the pressure regulating method for the oxygen inhalation channel according to any one of claims 1 to 7.

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