A gas measurement method and device, ventilation equipment, and storage medium

Abstract

A gas measurement method and device, ventilation equipment, and storage medium. During ventilation of the ventilation equipment, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, a target measurement mode is turned on (S201); a gas concentration measurement operation is performed according to the target measurement mode to measure the target gas concentration (S202).

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of medical device technology, and in particular to a gas measurement method and device, ventilation equipment, and storage medium. Background Art

[0002] When mechanically ventilating patients, ventilation equipment such as ventilators and anesthesia machines need to measure the patient's end-tidal carbon dioxide concentration to help doctors analyze the patient's ventilation status and determine whether the patient has hypercapnia or hypocapnia.

[0003] In the existing technology, blood gas sampling, as an invasive method of measuring end-tidal carbon dioxide, often causes pain to patients. Although transcutaneous carbon dioxide measurement is a non-invasive method, it is relatively complicated to implement, and the modules and accessories are expensive to use. The care is complicated and it is easy to cause damage to the skin of newborns or premature infants. Summary of the invention

[0004] In order to solve the above technical problems, the embodiments of the present invention hope to provide a gas measurement method and device, ventilation equipment, and storage medium, which can perform gas concentration measurement operations in different modes when ventilating a patient to measure the target gas concentration in the patient's exhaled gas, and the measurement method is simple and flexible.

[0005] The technical solution of the embodiment of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a gas measurement device, which is applied to a ventilation device that provides respiratory support for a patient, and the device includes: a gas sampling interface, a gas analysis module, a memory, and a controller connected to the gas sampling interface and the memory respectively;

[0007] The gas sampling interface collects the target sampling gas;

[0008] The gas analysis module is connected to the gas sampling interface and the controller respectively, and measures the concentration of the target sampled gas output by the gas sampling interface under the control of the controller;

[0009] The controller is connected to the memory and executes the gas measurement program stored in the memory to implement the following steps:

[0010] During ventilation by the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is met, a target measurement mode is turned on;

[0011] The gas analysis module is controlled to perform a gas concentration measurement operation according to the target measurement mode to measure the target gas concentration.

[0012] An embodiment of the present invention provides a ventilation device including the above-mentioned gas measurement device, including a gas source, a breathing circuit and a display;

[0013] The gas source provides gas during ventilation;

[0014] The breathing circuit is connected to the gas source to provide a breathing path during ventilation;

[0015] The gas measuring device is connected to the breathing circuit, the gas source and the display, and the gas measuring device measures the target gas concentration during ventilation.

[0016] An embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides respiratory support for a patient. The method includes:

[0017] During ventilation by the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, a target measurement mode is started;

[0018] A gas concentration measurement operation is performed according to the target measurement mode to measure the target gas concentration.

[0019] An embodiment of the present invention provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores a gas measurement program, and the gas measurement program can be executed by a controller to implement the above-mentioned gas measurement method.

[0020] The embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides respiratory support for a patient. During the ventilation process of the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, the target measurement mode is turned on; the gas concentration measurement operation is performed according to the target measurement mode to measure the target gas concentration. The technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations according to different modes when ventilating a patient to measure the target gas concentration in the patient's exhaled gas, and the measurement method is simple and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a gas measurement device provided by an embodiment of the present invention;

[0022] Figure 2 A flow chart of a gas measurement method provided by an embodiment of the present invention;

[0023] FIG. 3( a ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 1 ;

[0024] FIG. 3( b ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 2 ;

[0025] FIG3( c ) is a third exemplary parameter setting diagram provided in an embodiment of the present application;

[0026] FIG. 3( d ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 4 ;

[0027] Figure 4 A schematic diagram of an exemplary start-up target measurement mode provided by an embodiment of the present invention;

[0028] FIG. 5( a ) is a schematic diagram of an exemplary output of a target gas concentration provided in an embodiment of the present invention. Figure 1 ;

[0029] FIG. 5( b ) is a schematic diagram of an exemplary output of a target gas concentration provided by an embodiment of the present invention. Figure 2 ;

[0030] FIG5( c ) is a third output schematic diagram of an exemplary target gas concentration provided by an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of an exemplary method for setting a preset gas concentration threshold provided in an embodiment of the present invention;

[0032] Figure 7 An exemplary schematic diagram of an opening status prompt provided by an embodiment of the present invention;

[0033] Figure 8 A schematic structural diagram of a ventilation device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present invention, the implementation of the embodiments of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present invention.

[0035] The embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides respiratory support for a patient. The ventilation device can be a device with ventilation function such as a ventilator or an anesthesia machine, and the specific ventilation device is not limited in the embodiment of the present invention.

[0036] It should be noted that, in the embodiment of the present invention, the gas measurement method can be executed by a gas measurement device. Figure 1 The following is a schematic diagram of the structure of a gas measurement device provided by an embodiment of the present invention. Figure 1As shown, the gas measurement device includes: a gas sampling interface 101, a gas analysis module 102, a memory 103, and a controller 104 respectively connected to the gas sampling interface 101 and the memory 103. The gas analysis module 102 is respectively connected to the gas sampling interface 101 and the controller 104.

[0037] It should be noted that, in the embodiment of the present invention, the controller 104 can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), and a microprocessor, and the embodiment of the present invention is not limited thereto.

[0038] It should be noted that, in an embodiment of the present invention, the memory 103 may be a volatile memory (volatile memory), such as a random access memory (Random Access Memory, RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (Read Only Memory, ROM), a flash memory (flash memory), a hard disk (Hard Disk Drive, HDD) or a solid-state drive (Solid-State Drive, SSD); or a combination of the above types of memories, and provide a stored monitoring index providing program to the processor 102, which is not limited in the embodiment of the present invention.

[0039] The technical solution of the present invention is described in detail below based on the above-mentioned gas measuring device.

[0040] Figure 2 A flow chart of a gas measurement method provided by an embodiment of the present invention. Figure 2 As shown, it mainly includes the following steps:

[0041] S201. During ventilation by a ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected to be met, a target measurement mode is turned on.

[0042] In an embodiment of the present invention, during ventilation by the ventilation device, if the controller 104 of the gas measurement device receives a measurement trigger instruction or satisfies a preset measurement trigger condition, the target measurement mode is turned on.

[0043] It should be noted that, in the embodiment of the present invention, the purpose of the controller 104 turning on the target measurement mode is to measure the concentration of the target sampling gas, which may be CO2, O2, etc. The specific target sampling gas is not limited in the embodiment of the present invention.

[0044] It is understood that, in an embodiment of the present invention, the controller 104 may receive a measurement trigger instruction indicating to start the target measurement mode through a button, a switch, or a touch screen configured on the ventilation device, thereby starting the target measurement mode according to the measurement trigger instruction. The measurement trigger instruction may include parameters related to the target measurement mode. The specific target measurement mode and the manner in which the controller 104 receives the measurement trigger instruction are not limited in the embodiment of the present invention.

[0045] It should be noted that, in an embodiment of the present invention, the measurement trigger instruction includes at least one preset trigger moment, and the preset trigger moment may include the current moment. For example, setting the preset trigger moment to 0 indicates the current moment. When the preset trigger moment is set to the current moment, the target measurement mode is turned on when the measurement trigger instruction is received. The target measurement mode indicated to be turned on by the measurement trigger instruction may be any one of a timing measurement mode, a first equal-interval measurement mode, a second equal-interval measurement mode, a first non-equal-interval measurement mode, a second non-equal-interval measurement mode, and a conditional measurement mode. Of course, the target measurement mode may also be other measurement modes customized by the user. The specific target measurement mode is not limited in the embodiment of the present invention. Of course, when the preset trigger moment is set to the current moment, that is, when the target measurement mode is turned on when the measurement trigger instruction is received, it can also be considered to refer to a timing measurement mode including a preset trigger moment.

[0046] Specifically, in an embodiment of the present invention, if the controller 104 detects that a preset measurement trigger condition is met, the step of starting the target measurement mode includes: if it is detected that the setting of the target measurement mode is completed, or if it is detected that the target time has passed since a preset moment, it is determined that the measurement trigger condition is met.

[0047] It should be noted that, in the embodiment of the present invention, the ventilation device is usually configured with an interactive interface, and the user can set the relevant items for the target measurement mode through the interactive interface. When the controller 104 detects that the setting of the target measurement mode is completed, the target measurement mode can be turned on.

[0048] Exemplarily, in an embodiment of the present invention, if the controller 104 detects that the setting of at least one preset trigger moment is completed, the timing measurement mode is turned on. If the controller 104 detects that the setting of the measurement time interval is completed, the first equal-interval measurement mode is turned on. If the controller 104 detects that the setting of the measurement time interval and the number of measurements is completed, the second equal-interval measurement mode is turned on. If the controller 104 detects that the setting of the preset time interval change rule is completed, the first non-equal-interval measurement mode is turned on. If the controller 104 detects that the setting of the measurement time interval, the number of measurements and the preset irregular measurement is completed, the second non-equal-interval measurement mode is turned on. If the controller 104 detects that certain setting parameters are completed, the conditional measurement mode is turned on. Of course, in the specific implementation, the user can also select the measurement mode first, and after selecting the measurement mode, the corresponding measurement time interval, number of times, irregular measurement settings, etc. are output according to the selected measurement mode. The information setting window for inputting the setting parameters is provided for the user to input or select, and the specific implementation method is not limited here.

[0049] FIG. 3( a ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 1 As shown in Figure 3(a), the user can enter the measurement interval as 1h by clicking the box after the CO2 measurement interval.

[0050] FIG. 3( b ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 2 As shown in FIG3(b), the user can click the box after the CO2 measurement times and input the CO2 measurement times as 5 times. In addition, the user can also input the CO2 automatic measurement start time and end time.

[0051] Fig. 3(c) is a third exemplary parameter setting diagram provided in an embodiment of the present application. As shown in Fig. 3(c), the target measurement mode is a timed measurement mode, and the user can input multiple measurement times, after which the controller 104 can start the timed measurement mode.

[0052] FIG. 3( d ) is a schematic diagram of an exemplary parameter setting provided in an embodiment of the present application. Figure 4 As shown in FIG3(d), the user can set the upper limit or (and) lower limit of measurement parameters such as the inspired oxygen concentration FiO2, the peak pressure Ppeak, the inspiratory time Tinsp, and the measurement frequency, or can add conditions such as the duration exceeding the threshold, and then the controller 104 can start the conditional measurement mode.

[0053] Exemplarily, in an embodiment of the present invention, the preset time is A and the target duration is T. If the controller 104 detects that the duration T has passed since the time A, the target measurement mode is turned on at the time A+T. The specific target measurement mode can be any one of the multiple measurement modes provided above. Among them, the preset time A is the initial time when the controller 104 starts to detect the target duration T. The specific preset time A and the target duration T can be preset according to actual needs, and the embodiment of the present invention is not limited thereto.

[0054] Figure 4 FIG. 1 is a schematic diagram of an exemplary embodiment of the present invention for starting a target measurement mode. Figure 4 As shown, the gas to be measured is CO2. The user can click the "Start Measurement" icon behind CO2 to start the target measurement mode with the measurement trigger instruction to measure the CO2 concentration. In addition, the controller 104 detects whether the preset measurement trigger condition is met and can be started in a certain way. Figure 4 As shown, the user can click the long bar icon behind the CO2 automatic measurement. After the circle in the icon moves to the right, the controller 104 will continue to detect whether the preset measurement trigger condition is met, and automatically start the target measurement mode when it is detected that it is met.

[0055] It should be noted that, in the embodiments of the present invention, the above measurement modes and corresponding opening methods are only some optional solutions provided. The gas measurement device may also include other measurement modes and corresponding opening methods.

[0056] S202: Perform a gas concentration measurement operation according to a target measurement mode to measure the target gas concentration.

[0057] In an embodiment of the present invention, after the target measurement mode is turned on, the controller 104 of the ventilation device can control the gas analysis module 102 to perform a gas concentration operation according to the target measurement mode to measure the target gas concentration.

[0058] It should be noted that, in the embodiment of the present invention, the gas sampling interface 101 can collect the target sampling gas, and the gas analysis module 102 measures the concentration of the target sampling gas output from the gas sampling interface 101 under the control of the controller 104 .

[0059] Specifically, in an embodiment of the present invention, the target measurement mode is a timed measurement mode, the measurement trigger instruction includes at least one preset trigger moment, and the step of the controller 104 performing a gas concentration measurement operation according to the target measurement mode includes: according to the timed measurement mode, when at least one preset trigger moment arrives, controlling the gas analysis module 102 to perform a gas concentration measurement operation.

[0060] It should be noted that, in the embodiment of the present invention, the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation at each of the at least one preset triggering moment according to the timing measurement mode. The specific at least one preset triggering moment is not limited in the embodiment of the present invention.

[0061] Illustratively, in an embodiment of the present invention, at least one preset trigger moment includes: moment A1 and moment A2, and the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation when moment A1 arrives and moment A2 arrives, respectively.

[0062] Specifically, in an embodiment of the present invention, the target measurement mode is a first equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval, and the step of the controller 104 performing a gas concentration measurement operation according to the target measurement mode includes: according to the measurement time interval, periodically controlling the gas analysis module 102 to perform a gas concentration measurement operation.

[0063] It should be noted that in the embodiment of the present invention, the controller 104 periodically performs the gas concentration measurement operation according to the measurement time interval, which actually controls the gas analysis module 102 to perform a gas concentration measurement operation every measurement time interval. The specific measurement time interval is not limited in the embodiment of the present invention.

[0064] For example, in an embodiment of the present invention, the measurement time interval is T0, and the controller 104 controls the gas analysis module 102 to perform a gas concentration operation every time interval T0.

[0065] Specifically, in an embodiment of the present invention, the target measurement mode is a second equally spaced measurement mode, the measurement trigger instruction includes a measurement time interval and a number of measurements, and the step in which the controller 104 performs a gas concentration measurement operation according to the target measurement mode includes: within the measurement time interval, uniformly controlling the gas analysis module 102 to perform a gas concentration measurement operation according to the number of measurements.

[0066] It should be noted that, in the embodiment of the present invention, the controller 104 actually divides the number of measurements into measurement time intervals evenly and performs a gas concentration measurement operation at each divided time. The specific measurement time interval and the number of measurements are not limited in the embodiment of the present invention.

[0067] Exemplarily, in an embodiment of the present invention, the measurement time interval is T1, the number of measurements is 3, and the controller 104 evenly divides the 3 measurements into the T1 time period, the duration between the measurement moments is equal, and controls the gas analysis module 102 to perform a gas concentration operation at each divided moment.

[0068] Specifically, in an embodiment of the present invention, the target measurement mode is a first non-equal interval measurement mode, the measurement trigger instruction includes a preset time interval change rule, and the step of the controller 104 performing a gas concentration measurement operation according to the target measurement mode includes: determining at least one measurement moment according to the preset time interval change rule; when each measurement moment arrives, controlling the gas analysis module 102 to perform a gas concentration measurement operation.

[0069] It should be noted that, in the embodiment of the present invention, the preset time interval change rule can be set according to actual measurement needs. The embodiment of the present invention does not limit the specific preset time interval change rule.

[0070] Exemplarily, in an embodiment of the present invention, the preset time interval change rule is that the interval between the start measurement moment and the first measurement is 2 minutes, the interval between the second measurement and the first measurement is 2 minutes squared, that is, 4 minutes, and the interval between the third measurement and the second measurement is 2 minutes cubed, that is, 8 minutes. The controller 104 determines three measurement moments according to the preset time, so that when each of the three measurement moments arrives, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0071] Specifically, in an embodiment of the present invention, the target measurement mode is a second non-equally spaced measurement mode, the measurement trigger instruction includes a measurement time interval, a number of measurements, and a preset irregular measurement method, and the steps of the controller 104 performing a gas concentration measurement operation according to the target measurement mode include: determining a target moment equal to the number of measurements within the preset measurement time interval according to the measurement time interval, the number of measurements, and the preset irregular measurement method; when each target moment arrives, controlling the gas analysis module 102 to perform a gas concentration measurement operation.

[0072] It should be noted that, in the embodiment of the present invention, the irregular measurement method indicates how to irregularly perform gas concentration measurement operations that are consistent with the number of measurements within the measurement time interval. The specific measurement time interval, the number of measurements, and the preset irregular measurement method can be determined according to actual measurement requirements, and the embodiment of the present invention does not limit them.

[0073] Exemplarily, in an embodiment of the present invention, the measurement time interval is 30 minutes, the number of measurements is 3 times, and the preset irregular measurement method is that the first measurement moment is 5 minutes away from the moment when the target measurement mode is currently turned on, the second measurement moment is 9 minutes away from the first measurement moment, and the third measurement moment is 16 minutes away from the second measurement moment. The controller 104 can determine three target moments according to the above-mentioned measurement time interval, the number of measurements and the preset irregular measurement method, so as to control the gas analysis module 102 to perform gas concentration operations at each target moment. Of course, the irregular measurement method can also be associated with the measurement result. If the measurement result this time is within the normal range, the time interval for the next measurement can be extended; if the measurement result this time is not within the normal range, the time interval for the next measurement can be shortened.

[0074] Specifically, in an embodiment of the present invention, the target measurement mode is a conditional measurement mode, and the controller 104 performs the gas concentration measurement operation according to the target measurement mode, including:

[0075] Obtain monitoring parameters and / or set parameters;

[0076] According to the preset trigger judgment rules, and the acquired monitoring parameters and / or setting parameters, it is judged whether the preset parameter constraint conditions are met;

[0077] When it is determined that the parameter constraint condition is met, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0078] It should be noted that, in an embodiment of the present invention, the controller 104 obtains monitoring parameters and / or sets parameters according to the conditional measurement mode. The monitoring parameters may be one or more of oxygen concentration, airway pressure, inspiratory time, expiratory time, inspiratory-expiratory ratio, positive end-expiratory pressure, respiratory flow rate, blood oxygen, pulse rate, heart rate, and blood pressure. The setting parameters may be ventilation control parameters, one or more of the parameter thresholds, parameter abnormality duration, etc. set by the user for determining the judgment rule. The ventilation control parameters may include one or more of ventilation pressure, ventilation oxygen concentration, end-expiratory pressure, inspiratory time, respiratory rate, etc. For example, when one or more of ventilation pressure, ventilation oxygen concentration or end-expiratory pressure, respiratory rate is set to be low or high, or when the inspiratory time is set to be short or too long, the subsequent timing may be set to start the gas concentration measurement operation to avoid excessive or insufficient ventilation, causing CO2 retention, hypercapnia, hypocapnia, etc. in the patient. Parameter thresholds may include monitoring parameter thresholds and ventilation control parameter thresholds. The monitoring parameter thresholds correspond to each selected monitoring parameter, and whether the corresponding parameter is abnormal can be determined by the monitoring parameter thresholds; the ventilation control parameter thresholds correspond to each ventilation control parameter, and the trigger judgment rules can be determined by the ventilation control parameter thresholds. The parameter abnormality duration defines the duration or number of times the corresponding parameter monitoring value exceeds the threshold. The user can also choose to set the duration for the ventilation monitoring parameter or control parameter to exceed the threshold, that is, the measurement can be triggered immediately after the monitoring parameter or setting parameter exceeds the threshold, or the measurement can be triggered after the monitoring parameter or setting parameter exceeds the threshold for a preset period of time. The specific preset frequency can be set according to the actual measurement requirements, and the embodiments of the present invention are not limited thereto.

[0079] Of course, in the case of judging whether the measurement trigger condition is met by monitoring parameters, the controller 104 can obtain the monitoring parameters at a preset frequency to judge whether the preset measurement trigger condition is met. In the case of judging whether the measurement trigger condition is met by ventilation control parameters, the controller 104 can set or modify the preset trigger judgment rule according to the latest value of the ventilation control parameter and the corresponding ventilation control parameter threshold after a ventilation control parameter is set or updated, and then judge whether the parameter measurement condition is met according to the trigger judgment rule. For example, when the ventilation pressure is changed from 8cm water to 5cm water, the controller 104 can change the trigger judgment rule from starting once every 2 hours to starting once every hour.

[0080] It should be noted that, in an embodiment of the present invention, the preset trigger judgment rule can be used to determine whether the monitoring parameters and / or setting parameters have reached a certain level or are within a certain range. If the monitoring parameters and / or setting parameters have reached a certain level or are within a certain range, it is determined that the parameter constraint condition is met. If the monitoring parameters and / or setting parameters do not reach a certain level and are not within a certain range, it is determined that the parameter constraint condition is not met. The specific trigger judgment rules of the embodiment of the present invention are not limited.

[0081] For example, in an embodiment of the present invention, after the conditional measurement mode is turned on, the controller 104 may obtain the airway pressure once. If the specific value of the airway pressure obtained by the controller 104 is within the preset range, it is determined that the parameter constraint condition is satisfied, and the gas analysis module 102 is controlled to perform a gas concentration measurement operation each time the determination is satisfied.

[0082] In an embodiment of the present invention, the controller 104 may further output measurement prompt information before controlling the gas analysis module 102 to perform the gas concentration measurement operation.

[0083] It should be noted that, in the embodiment of the present invention, the measurement prompt information is used to prompt the user whether to agree that the current controller 104 controls the gas analysis module 102 to perform the gas concentration operation. For example, the measurement prompt information output by the controller 104 is the text "Whether to perform the gas concentration operation at present", so that the text is displayed on the ventilation device to prompt the user. The specific measurement prompt information is not limited in the embodiment of the present invention.

[0084] In an embodiment of the present invention, after the controller 104 outputs the measurement prompt information, before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the following steps can also be performed: detecting whether the measurement confirmation information is received; if the measurement confirmation information is received, triggering the gas analysis module 102 to perform the gas concentration measurement operation.

[0085] It is understandable that, in the embodiment of the present invention, the controller 104 outputs the measurement prompt information to prompt the user whether to perform the gas concentration measurement operation. Accordingly, the user needs to send the information of whether to perform the gas concentration measurement operation to the controller 104 through interactive tools such as buttons and touch screens. If the controller 104 detects that the measurement confirmation information has been received, it means that the user agrees to perform the gas concentration measurement operation currently, thereby triggering the gas analysis module 102 to perform the gas concentration measurement operation.

[0086] It should be noted that, in the embodiment of the present invention, before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 needs to control the air supply flow rate of the ventilation device to reduce or stop the preset ventilation suppression time.

[0087] It is understandable that, in the embodiment of the present invention, during the process of the gas analysis module 102 performing the gas concentration measurement operation, if the ventilation device maintains the original air supply flow rate to deliver gas, the fresh gas will dilute the target gas sample collected by the gas sampling interface 101, thereby affecting the accuracy of the measurement by the gas analysis module 102. Therefore, before the gas analysis module 102 performs the gas concentration measurement operation, the controller 104 can effectively prevent the target gas sample from being diluted by the fresh gas by controlling the air supply flow rate of the ventilation device to reduce or stop the preset ventilation suppression time, so that the gas analysis module 102 can measure the accurate target gas concentration.

[0088] In a specific implementation, the controller 104 may detect that the target time has passed since the preset moment, and then consider that the measurement trigger condition is satisfied to start the target gas concentration measurement. During the target time from the preset moment, the controller 104 may control the ventilation device to reduce or stop the air flow rate to suppress ventilation, so that a more accurate target gas concentration can be detected when the target gas concentration measurement is started.

[0089] In an embodiment of the present invention, before the controller 104 controls the ventilation device to reduce the flow rate or stop the preset ventilation inhibition time, it also includes: receiving a ventilation inhibition time setting instruction; setting the preset ventilation inhibition time according to the ventilation inhibition time setting instruction.

[0090] It should be noted that, in an embodiment of the present invention, the gas measurement device may further include a receiving module, and the controller 104 may specifically receive a ventilation suppression time setting instruction through the receiving module. The preset ventilation suppression time is set according to the ventilation suppression time setting instruction, including any one of adding, modifying, or closing the preset ventilation suppression time. If the ventilation suppression time setting instruction indicates that the preset ventilation suppression time is set to 0, ventilation suppression is turned off. Of course, during the ventilation suppression process, the preset ventilation suppression time can also be modified to 0 to manually end ventilation suppression in advance. After manually ending ventilation suppression in advance, the gas concentration measurement operation can be performed immediately. The specific preset ventilation suppression time is not limited in the embodiment of the present invention.

[0091] In an embodiment of the present invention, before the controller 104 controls the gas analysis module 102 to perform the gas concentration measurement operation, the process further includes: outputting one or more of ventilation inhibition prompt information, recommended measures information, and setting item prompt information.

[0092] It is understandable that in the embodiment of the present invention, before the gas analysis module 102 performs the gas concentration operation, it is necessary to control the air flow rate of the ventilation device to decrease or inhibit the ventilation of the ventilation device. Therefore, the controller 104 can output one or more of the corresponding ventilation inhibition prompt information, the recommended measures information, and the setting item prompt information in advance to ensure that the medical staff is informed of the relevant information, and once the patient has discomfort or other symptoms, the corresponding medical operation can be performed in time.

[0093] It should be noted that, in the embodiments of the present invention, the ventilation inhibition prompt information may specifically be text or patterns used to prompt that the ventilation device is about to be in a ventilation inhibition state. The recommended measures information may specifically be information such as some actions that the patient needs to avoid performing when the ventilation device is in a ventilation state. The setting item prompt information may specifically be the set ventilation inhibition duration, and function prompt information of various measurement setting items. The specific ventilation inhibition prompt information, recommended measures information, and setting item prompt information are not limited in the embodiments of the present invention.

[0094] Illustratively, in an embodiment of the present invention, the ventilation inhibition prompt information output by the controller 104 is "suspend ventilation during measurement", the recommended measure information is "avoid mouth breathing as much as possible", and the setting item prompt information is "suspend ventilation for S seconds".

[0095] In an embodiment of the present invention, after measuring the target gas concentration, the controller 104 further includes: acquiring a target identifier corresponding to the target measurement mode; and outputting the target gas concentration in a preset output manner based on the target identifier.

[0096] It should be noted that, in the embodiment of the present invention, the target identifier is a specific identifier that can represent the target measurement mode used when the controller 104 outputs the target gas concentration in a preset output manner.

[0097] It should be noted that, in the embodiments of the present invention, the target identifier is not limited to a specific graphic, color, text or alphabetic character, etc. For example, if the target measurement mode is the timing measurement mode, and the target identifier corresponding to the timing measurement mode is red, then when the target gas concentration measured in the timing measurement mode is output in a real-time waveform manner, the color of the corresponding waveform curve is red. The specific target identifier can be preset according to actual needs, and the embodiments of the present invention are not limited thereto.

[0098] It should be noted that, in an embodiment of the present invention, the preset output mode includes one or more of a numerical mode, a real-time waveform mode, a compressed waveform mode, a spliced ​​waveform mode, a comparative waveform mode, and a chart mode. Among them, the chart mode can be any one of a curve chart, a histogram, a trend chart, a pie chart, a bar chart, and a spider chart. The compressed waveform mode can include a full compression waveform mode and a local compression waveform mode. In addition, in the image output according to the preset output mode, elements related to the measurement, such as the measurement time and the number of measurements, can also be recorded to enrich the image information. Of course, the preset output mode can also include other types of modes, and the specific preset output mode is not limited in the embodiment of the present invention.

[0099] FIG. 5( a ) is a schematic diagram of an exemplary output of a target gas concentration provided in an embodiment of the present invention. Figure 1 As shown in FIG. 5( a ), the target sampling gas is actually CO2, and the corresponding target gas concentration is the CO2 concentration. The controller 104 outputs a CO2 real-time waveform according to the CO2 concentration measured by the gas analysis module 102 in a real-time waveform manner.

[0100] FIG. 5( b ) is a schematic diagram of an exemplary output of a target gas concentration provided by an embodiment of the present invention. Figure 2 As shown in FIG5(b), the target sampling gas is actually CO2, and the corresponding target gas concentration is the CO2 concentration. The controller 104 compresses and outputs the interval where the CO2 concentration is not measured, i.e., where there is no CO2 concentration, in a local compression waveform manner, and maintains the normal standard waveform output for the interval where the CO2 concentration is measured.

[0101] Exemplarily, in an embodiment of the present invention, the target measurement mode is a timing measurement mode, the corresponding target identifier is a dot, and when the target gas concentration value is output according to the curve graph, the target gas concentration value is identified in the curve graph with a dot. The target measurement mode is a conditional measurement mode, the corresponding target identifier is a square, and when the target gas concentration value is output according to the curve graph, the target gas concentration value is identified in the curve graph with a square.

[0102] Figure 5(c) is a third output schematic diagram of an exemplary target gas concentration provided in an embodiment of the present invention. As shown in Figure 5(c), the target sampling gas is actually CO2, and the corresponding target gas concentration is the CO2 concentration, and the preset output mode is the trend chart mode. It can be clearly seen that the target measurement mode is the conditional measurement mode, and its corresponding target identifier is a square, the target measurement mode is the first equal-interval measurement mode, and its corresponding target identifier is a circle, and the target measurement mode is the timing measurement mode, and its corresponding target identifier is a triangle. As shown in Figure 5(c), the CO2 concentrations measured in different measurement modes are marked with corresponding target identifiers in the figure.

[0103] In an embodiment of the present invention, when the controller 104 executes the step of outputting the target gas concentration in a preset output manner, the step further includes: marking a preset gas concentration threshold in a preset marking manner.

[0104] It is understandable that in the embodiments of the present invention, when the target gas concentration is output according to the preset output mode based on the target identification, only the target measurement mode is reflected. In actual application, the preset gas concentration threshold can also be marked when the target gas concentration is output to reflect the size relationship between the measured target gas concentration and the preset gas concentration threshold. When medical staff check the size relationship between the target gas concentration and the preset gas concentration threshold, they can take corresponding medical measures.

[0105] It should be noted that, in the embodiment of the present invention, the preset gas concentration threshold may include a maximum threshold and a minimum threshold, both of which may be marked. The specific preset gas concentration threshold is not limited in the embodiment of the present invention.

[0106] Figure 6 The following is a schematic diagram of an exemplary method for setting a preset gas concentration threshold value provided by an embodiment of the present invention. Figure 6 As shown, the preset gas concentration thresholds include a maximum threshold and a minimum threshold. The user can select the tool to click or drag the corresponding icons after the maximum threshold and the minimum threshold to move the circle in the icon to the right, that is, to turn on the setting, and then enter the corresponding thresholds, namely 50mmHg and 15mmHg, to complete the setting.

[0107] It should be noted that, in the embodiment of the present invention, the preset marking method includes one or more of a reference line method, a scale method, a color method, and a value flashing method. Of course, the preset marking method can also be other marking methods defined by the user, which is not limited by the embodiment of the present invention.

[0108] Specifically, as shown in FIG5(c), when the controller 104 outputs the target gas concentration in a real-time waveform, the maximum threshold and the minimum threshold included in the preset gas concentration threshold are marked in the waveform in the form of reference lines. In the waveform of FIG5(c), multiple target gas concentration values ​​measured at multiple moments are marked, and it can be intuitively seen whether the target gas concentration value at each moment exceeds the preset gas concentration threshold.

[0109] In an embodiment of the present invention, after executing the step of starting the target measurement mode, the controller 104 further includes: outputting the target measurement mode and / or outputting the measurement status.

[0110] It should be noted that, in an embodiment of the present invention, the target measurement mode may be output after the target measurement mode is turned on. The target measurement mode may be any one of a timing measurement mode, a first equal-interval measurement mode, a second equal-interval measurement mode, a first non-equal-interval measurement mode, a second non-equal-interval measurement mode, and a conditional measurement mode.

[0111] It should be noted that, in the embodiment of the present invention, the measurement state may specifically include states such as gas concentration measurement started, measurement about to start, measurement in progress, and measurement finished, etc. The specific measurement state is not limited in the embodiment of the present invention.

[0112] Figure 7 The following is a schematic diagram of an exemplary opening status prompt provided by an embodiment of the present invention. Figure 7 As shown, the controller 104 executes to start the target measurement mode, and the specific target measurement mode is the first equal-interval measurement mode. When the controller 104 outputs the CO2 concentration in a compressed waveform, it outputs an icon corresponding to the first equal-interval measurement mode and the related text "measurement started" of the measurement state, which is displayed in the upper right corner of the waveform.

[0113] Illustratively, in an embodiment of the present invention, when the controller 104 is executing the step of controlling the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode, it can output the text "Measurement is about to begin" 10 seconds before the measurement starts, output the text "Measurement in progress" while the measurement is in progress, and output the text "Measurement ended" when the measurement ends.

[0114] The embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides respiratory support for a patient. During the ventilation process of the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, the target measurement mode is turned on; the gas concentration measurement operation is performed according to the target measurement mode to measure the target gas concentration. The technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations according to different modes when ventilating a patient to measure the target gas concentration in the patient's exhaled gas, and the measurement method is simple and flexible.

[0115] The embodiment of the present invention also provides a gas measurement device, which is applied to a ventilation device that provides respiratory support for a patient. Figure 1 As shown, the gas measurement device includes: a gas sampling interface 101, a gas analysis module 102, a memory 103, and a controller 104 connected to the gas sampling interface and the memory respectively;

[0116] Gas sampling interface 101, collecting target sampling gas;

[0117] The gas analysis module 102 is connected to the gas sampling interface 101 and the controller 103 respectively, and measures the concentration of the target sampled gas output by the gas sampling interface under the control of the controller;

[0118] The controller 104 is connected to the memory 103 and executes the gas measurement program stored in the memory 103 to implement the following steps:

[0119] During ventilation by the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is met, the target measurement mode is turned on;

[0120] The gas analysis module 102 is controlled to perform a gas concentration measurement operation according to a target measurement mode to measure the target gas concentration.

[0121] Optionally, the target measurement mode is a timing measurement mode, the measurement trigger instruction includes at least one preset trigger time, and the controller 104 controls the gas analysis module 102 to perform the gas concentration measurement operation according to the target measurement mode, including:

[0122] According to the timing measurement mode, when each of at least one preset triggering moment arrives, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0123] Optionally, the target measurement mode is a first equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval, and the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode, including:

[0124] According to the measurement time interval, the gas analysis module 102 is periodically controlled to perform the gas concentration measurement operation.

[0125] Optionally, the target measurement mode is the second equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval and a measurement number, and the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode, including:

[0126] During the measurement time interval, the gas analysis module is evenly controlled to perform gas concentration measurement operations according to the number of measurements.

[0127] Optionally, the target measurement mode is a first non-equal interval measurement mode, the measurement trigger instruction includes a preset time interval change rule, and the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode, including:

[0128] At least one measurement moment is determined according to a preset time interval variation rule; when each measurement moment arrives, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0129] In the above device, the target measurement mode is the second non-equal interval measurement mode, the measurement trigger instruction includes a measurement time interval, a measurement number and a preset irregular measurement mode, and the controller 104 controls the gas analysis module 102 to perform the gas concentration measurement operation according to the target measurement mode. The steps include:

[0130] According to the measurement time interval, the number of measurements and the preset irregular measurement method, target moments equal to the number of measurements are determined within the measurement time interval; when each target moment arrives, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0131] Optionally, the target measurement mode is a conditional measurement mode, and the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode, including:

[0132] Obtain monitoring parameters and / or set parameters;

[0133] Determine whether a preset measurement trigger condition is met according to a preset trigger judgment rule and the acquired monitoring parameters and / or setting parameters;

[0134] When it is determined that the parameter measurement condition is met, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.

[0135] Optionally, before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:

[0136] Output measurement prompt information.

[0137] Optionally, the device further includes a receiving module, and the controller 104 further performs the following steps after outputting the measurement prompt information and before controlling the gas analysis module 102 to perform the gas concentration measurement operation:

[0138] It is detected whether the receiving module receives the measurement confirmation information; if the receiving module receives the measurement confirmation information, the gas analysis module 102 is triggered to perform the gas concentration measurement operation.

[0139] Optionally, when controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:

[0140] Control the ventilation device to reduce the flow rate or stop the preset suppression ventilation time.

[0141] Optionally, the device further includes a receiving module, and the controller 104 further performs the following steps before controlling the ventilation device to reduce the air flow rate or stop the preset ventilation inhibition time:

[0142] The preset ventilation inhibition time length is set according to the ventilation inhibition time length setting instruction received by the receiving module.

[0143] Optionally, if the controller 104 detects that a preset measurement trigger condition is met, the step of starting the target measurement mode includes:

[0144] If it is detected that the setting of the target measurement mode is completed, or if it is detected that the target time period has passed since the preset time, it is determined that the measurement trigger condition is met, and the target measurement mode is turned on.

[0145] Optionally, before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:

[0146] One or more of ventilation inhibition prompt information, recommended action information, and setting item prompt information is output.

[0147] Optionally, after measuring the target gas concentration, the controller 104 further performs the following steps:

[0148] Obtain the target identification corresponding to the target measurement mode;

[0149] Based on the target identification, the target gas concentration is output according to the preset output method.

[0150] Optionally, the preset output mode includes one or more of a numerical mode, a real-time waveform mode, a compressed waveform mode, a spliced ​​waveform mode, a comparative waveform mode, and a chart mode.

[0151] Optionally, when the controller 104 outputs the target gas concentration in a preset output mode, it further performs the following steps:

[0152] The preset gas concentration threshold is marked in a preset marking manner.

[0153] Optionally, the preset marking method includes one or more of a reference line method, a scale method, a color method, and a value flashing method.

[0154] Optionally, after starting the target measurement mode, the controller 104 further performs the following steps:

[0155] Output target measurement mode and / or output measurement status.

[0156] The embodiment of the present invention also provides a ventilation device. Figure 8 A schematic diagram of the structure of a ventilation device provided by an embodiment of the present invention. Figure 8 As shown, the ventilation device includes not only a gas measuring device 8001, but also a gas source 802, a breathing circuit 803 and a display 804;

[0157] A gas source 802 provides gas during ventilation;

[0158] The breathing tube 803 is connected to the gas source 802 to provide a breathing path during ventilation;

[0159] The gas measuring device 801 is connected to the breathing tube 803, the gas source 802 and the display 804. The gas measuring device 801 measures the target gas concentration during the ventilation process.

[0160] The embodiment of the present invention provides a computer-readable storage medium, which stores a gas measurement program, and the gas measurement program can be executed by a controller to implement the above-mentioned gas measurement method. The technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations in different modes when ventilating a patient to measure the target gas concentration in the patient's exhaled gas, and the measurement method is simple and flexible.

[0161] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0162] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable signal processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable signal processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0163] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable signal processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0164] These computer program instructions may also be loaded onto a computer or other programmable signal processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0165] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

[0166] Industrial Applicability

[0167] In the technical solution of the embodiment of the present invention, during the ventilation process of the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, the target measurement mode is turned on; the gas concentration measurement operation is performed according to the target measurement mode to measure the target gas concentration. The technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations according to different modes when ventilating a patient to measure the target gas concentration in the patient's exhaled gas, and the measurement method is simple and flexible.

Claims

1. A gas measuring device, applied to a ventilation device providing respiratory support for a patient, characterized in that: The device comprises: a gas sampling interface, a gas analysis module, a memory, and a controller connected to the gas sampling interface and the memory respectively; The gas sampling interface collects target sample gas in the exhaled gas; The gas analysis module is connected to the gas sampling interface and the controller respectively, and measures the concentration of the target sampled gas output by the gas sampling interface under the control of the controller; The controller is connected to the memory and executes the gas measurement program stored in the memory to implement the following steps: During ventilation by the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is met, a target measurement mode is turned on; Controlling the air supply flow rate of the ventilation device to reduce or stop a preset ventilation suppression time; Controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode to measure the target gas concentration; Among them, the target measurement mode is selected from the following: a timing measurement mode, a first equal-interval measurement mode, a second equal-interval measurement mode, a first non-equal-interval measurement mode, a second non-equal-interval measurement mode and a conditional measurement mode; the measurement trigger instructions or the preset measurement trigger conditions corresponding to different target measurement modes are different.

2. The device according to claim 1, characterized in that If the target measurement mode is a timing measurement mode, the measurement trigger instruction includes at least one preset trigger time; The step of the controller controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode comprises: According to the timing measurement mode, when each of the at least one preset triggering moment arrives, the gas analysis module is controlled to perform the gas concentration measurement operation.

3. The device according to claim 1, characterized in that If the target measurement mode is the first equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval; and the step of the controller controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode includes: According to the measurement time interval, the gas analysis module is periodically controlled to perform the gas concentration measurement operation.

4. The device according to claim 1, characterized in that If the target measurement mode is the second equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval and a measurement number; the step of the controller controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode includes: In the measurement time interval, the gas analysis module is uniformly controlled to perform the gas concentration measurement operation according to the number of measurements.

5. The device according to claim 1, characterized in that If the target measurement mode is the first non-equal interval measurement mode, the measurement trigger instruction includes a preset time interval change rule; the step of the controller controlling the gas analysis module to perform the gas concentration measurement operation according to the target measurement mode includes: At least one measurement moment is determined according to the preset time interval change rule; when each measurement moment arrives, the gas analysis module is controlled to perform the gas concentration measurement operation.

6. The device according to claim 1, characterized in that If the target measurement mode is the second non-uniform interval measurement mode, the measurement trigger instruction includes a measurement time interval, a measurement number, and a preset irregular measurement mode; The step of the controller controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode comprises: According to the measurement time interval, the number of measurements and the preset irregular measurement method, target moments equal to the number of measurements are determined within the measurement time interval; when each of the target moments arrives, the gas analysis module is controlled to perform the gas concentration measurement operation.

7. The device according to claim 1, characterized in that If the target measurement mode is a conditional measurement mode, the step of the controller controlling the gas analysis module to perform a gas concentration measurement operation according to the target measurement mode includes: Obtain monitoring parameters and / or set parameters; Determine whether a preset measurement trigger condition is met according to a preset trigger judgment rule and the acquired monitoring parameters and / or setting parameters; When it is determined that the preset measurement trigger condition is met, the gas analysis module is controlled to perform the gas concentration measurement operation.

8. The device according to any one of claims 2 to 7, characterized in that: Before controlling the gas analysis module to perform the gas concentration measurement operation, the controller further performs the following steps: Output measurement prompt information.

9. The device according to claim 8, characterized in that The device further includes a receiving module, and the controller further performs the following steps after outputting the measurement prompt information and before controlling the gas analysis module to perform the gas concentration measurement operation: Detecting whether the receiving module receives the measurement confirmation information; if the receiving module receives the measurement confirmation information, triggering the gas analysis module to perform the gas concentration measurement operation.

10. The device according to claim 1, characterized in that The device further includes a receiving module, and the controller further performs the following steps before controlling the ventilation device to reduce the air flow rate or stop the preset ventilation inhibition time: The preset ventilation inhibition time length is set according to the ventilation inhibition time length setting instruction received by the receiving module.

11. The device according to claim 1, characterized in that If the controller detects that a preset measurement trigger condition is met, the step of starting the target measurement mode includes: If it is detected that the setting of the target measurement mode is completed, or if it is detected that the target time period has passed since the preset moment, it is determined that the preset measurement trigger condition is met, and the target measurement mode is turned on.

12. The device according to claim 1, characterized in that Before controlling the gas analysis module to perform a gas concentration measurement operation, the controller further performs the following steps: One or more of ventilation inhibition prompt information, recommended action information, and setting item prompt information is output.

13. The device according to claim 1, characterized in that After measuring the target gas concentration, the controller further performs the following steps: Obtaining a target identifier corresponding to the target measurement mode; Based on the target identifier, the target gas concentration is output in a preset output mode.

14. The device according to claim 13, characterized in that The preset output mode includes one or more of a numerical mode, a real-time waveform mode, a compressed waveform mode, a spliced ​​waveform mode, a comparative waveform mode, and a chart mode.

15. The device according to claim 13, characterized in that When the controller outputs the target gas concentration in a preset output mode, the controller further performs the following steps: The preset gas concentration threshold is marked in a preset marking manner.

16. The device according to claim 15, characterized in that The preset marking method includes one or more of a reference line method, a scale method, a color method, and a value flashing method.

17. The device according to claim 1, characterized in that After the target measurement mode is turned on, the controller further performs the following steps: Output the target measurement mode and / or output the measurement status.

18. A ventilation device comprising the gas measuring device according to any one of claims 1 to 17, characterized in that: Including gas source, breathing circuit and display; The gas source provides gas during ventilation; The breathing circuit is connected to the gas source to provide a breathing path during ventilation; The gas measuring device is connected to the breathing circuit, the gas source and the display, and the gas measuring device measures the target gas concentration during ventilation.

19. A gas measurement method, applied to a ventilation device providing respiratory support for a patient, characterized in that: The method comprises: During ventilation by the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected to be met, a target measurement mode is started; Controlling the air supply flow rate of the ventilation device to reduce or stop a preset ventilation suppression time; Performing a gas concentration measurement operation according to the target measurement mode to measure the target gas concentration; Among them, the target measurement mode is selected from the following: a timing measurement mode, a first equal-interval measurement mode, a second equal-interval measurement mode, a first non-equal-interval measurement mode, a second non-equal-interval measurement mode, and a conditional measurement mode; the measurement trigger instructions or the preset measurement trigger conditions corresponding to different target measurement modes are different.

20. The method according to claim 19, characterized in that If the target measurement mode is a timed measurement mode, the measurement trigger instruction includes at least one preset trigger time, and the step of performing a gas concentration measurement operation according to the target measurement mode includes: According to the timing measurement mode, the gas concentration measurement operation is performed when the at least one preset triggering moment arrives.

21. The method according to claim 19, characterized in that If the target measurement mode is the first equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval, and the step of performing the gas concentration measurement operation according to the target measurement mode includes: The gas concentration measurement operation is performed periodically according to the measurement time interval.

22. The method according to claim 19, characterized in that If the target measurement mode is the second equal-interval measurement mode, the measurement trigger instruction includes a measurement time interval and a measurement number, and the step of performing a gas concentration measurement operation according to the target measurement mode includes: In the measurement time interval, the gas concentration measurement operation is evenly performed according to the measurement number of times.

23. The method according to claim 19, characterized in that If the target measurement mode is the first non-equal interval measurement mode, the measurement trigger instruction includes a preset time interval change rule, and the step of performing the gas concentration measurement operation according to the target measurement mode includes: Determine at least one measurement moment according to the preset time interval variation rule; When each of the measurement moments arrives, the gas concentration measurement operation is performed respectively.

24. The method according to claim 19, characterized in that If the target measurement mode is the second non-equal interval measurement mode, the measurement trigger instruction includes a measurement time interval, a measurement number, and a preset irregular measurement mode, and the step of performing a gas concentration measurement operation according to the target measurement mode includes: According to the measurement time interval, the number of measurements and the preset irregular measurement mode, determining a number of target moments equal to the number of measurements within the measurement time interval; When each of the target time points arrives, the gas concentration measurement operation is performed.

25. The method according to claim 19, characterized in that If the target measurement mode is a conditional measurement mode, the step of performing a gas concentration measurement operation according to the target measurement mode includes: Obtain monitoring parameters and / or set parameters; According to the preset trigger judgment rules, and the acquired monitoring parameters and / or setting parameters, it is judged whether the preset parameter constraint conditions are met; When it is determined that the parameter constraint condition is satisfied, the gas concentration measurement operation is performed.

26. The method according to any one of claims 20 to 25, characterized in that: Before performing the gas concentration measurement operation, the method further includes: Output measurement prompt information.

27. The method according to claim 26, characterized in that After outputting the measurement prompt information and before performing the gas concentration measurement operation, the method further includes: Detect whether measurement confirmation information is received; If the measurement confirmation information is received, the gas concentration measurement operation is triggered to be executed.

28. The method according to claim 19, characterized in that Before controlling the ventilation device to reduce the air flow rate or stop the preset ventilation inhibition time, the method further includes: Receive ventilation inhibition duration setting instructions; The preset ventilation inhibition time length is set according to the ventilation inhibition time length setting instruction.

29. The method according to claim 19, characterized in that If it is detected that the preset measurement trigger condition is met, the step of starting the target measurement mode includes: If it is detected that the setting of the target measurement mode is completed, or if it is detected that a target time period has passed since a preset time, it is determined that the preset measurement trigger condition is satisfied.

30. The method according to claim 19, characterized in that Before performing the gas concentration measurement operation, the method further includes: One or more of ventilation inhibition prompt information, recommended action information, and setting item prompt information is output.

31. The method according to claim 19, characterized in that After measuring the target gas concentration, the method further includes: Obtaining a target identifier corresponding to the target measurement mode; Based on the target identifier, the target gas concentration is output in a preset output mode.

32. The method according to claim 31, characterized in that The preset output mode includes one or more of a numerical mode, a real-time waveform mode, a compressed waveform mode, a spliced ​​waveform mode, a comparative waveform mode, and a chart mode.

33. The method according to claim 31, characterized in that When executing the step of outputting the target gas concentration in a preset output mode, the method further includes: The preset gas concentration threshold is marked in a preset marking manner.

34. The method according to claim 33, characterized in that The preset marking method includes one or more of a reference line method, a scale method, a color method, and a value flashing method.

35. The method according to claim 19, characterized in that After executing the step of starting the target measurement mode, the method further includes: The target measurement mode and / or measurement status is output.

36. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a gas measurement program, and the gas measurement program can be executed by a controller to implement the gas measurement method according to any one of claims 19 to 35.

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