WO2020258316A1 - Procédé et appareil de mesure de gaz, dispositif de ventilation et support de stockage - Google Patents

Procédé et appareil de mesure de gaz, dispositif de ventilation et support de stockage Download PDF

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Publication number
WO2020258316A1
WO2020258316A1 PCT/CN2019/093896 CN2019093896W WO2020258316A1 WO 2020258316 A1 WO2020258316 A1 WO 2020258316A1 CN 2019093896 W CN2019093896 W CN 2019093896W WO 2020258316 A1 WO2020258316 A1 WO 2020258316A1
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Prior art keywords
measurement
target
mode
gas
preset
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PCT/CN2019/093896
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English (en)
Chinese (zh)
Inventor
王慧华
潘瑞玲
焦东升
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Shenzhen Mindray Bio Medical Electronics Co Ltd
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Shenzhen Mindray Bio Medical Electronics Co Ltd
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Priority to CN201980093570.0A priority Critical patent/CN113631209B/zh
Priority to PCT/CN2019/093896 priority patent/WO2020258316A1/fr
Publication of WO2020258316A1 publication Critical patent/WO2020258316A1/fr
Anticipated expiration legal-status Critical
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath

Definitions

  • the embodiment of the present invention relates to the technical field of medical devices, and in particular to a gas measurement method and device, ventilation equipment, and storage medium.
  • Ventilation equipment such as ventilators and anesthesia machines need to measure the patient’s end-tidal carbon dioxide concentration in the process of mechanically ventilating the patient to help the doctor analyze the patient’s ventilation status and determine whether the patient has hypercapnia or hypocapnia .
  • blood gas sampling is an invasive end-tidal carbon dioxide measurement method, which often brings pain to patients.
  • transcutaneous carbon dioxide measurement is a non-invasive method, the implementation is more complicated and the cost of modules and accessories is high. , The use cost is expensive, and the care is complicated, it is easy to cause damage to the skin of newborns or premature infants.
  • the embodiments of the present invention expect 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 in the patient’s exhaled air
  • the gas concentration measurement method is simple and flexible.
  • the embodiment of the present invention provides a gas measurement device, which is applied to a ventilation device that provides respiratory support for a patient.
  • the device includes: a gas sampling interface, a gas analysis module, a memory, and the gas sampling interface and the memory respectively Connected controller;
  • the gas sampling interface collects target sampling gas
  • the gas analysis module is respectively connected to the gas sampling interface and the controller, and measures the concentration of the target sampling 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:
  • the target measurement mode is turned on
  • the gas analysis module is controlled to perform a gas concentration measurement operation according to the target measurement mode, and the target gas concentration is measured.
  • the embodiment of the present invention provides a ventilation device including the above-mentioned gas measuring device, including a gas source, a breathing tube, and a display;
  • the gas source provides gas during ventilation
  • the breathing circuit is connected to the air source, and provides a breathing path during ventilation
  • the gas measuring device is connected with the breathing tube, the gas source and the display, and the gas measuring device measures the target gas concentration during the ventilation process.
  • 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, and the method includes:
  • the target measurement mode is turned on
  • the gas concentration measurement operation is performed according to the target measurement mode, and the target gas concentration is measured.
  • An embodiment of the present invention provides a computer-readable storage medium, wherein 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.
  • the embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides breathing support for a patient. During ventilation of the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, then Turn on the target measurement mode; execute the gas concentration measurement operation according to the target measurement mode, and measure the target gas concentration.
  • the technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations in different modes when ventilating the patient to measure the target gas concentration in the patient's exhaled air, and the measurement method is simple and flexible.
  • Fig. 1 is a schematic structural diagram of a gas measuring device provided by an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a gas measurement method provided by an embodiment of the present invention.
  • FIG. 3(a) is a schematic diagram 1 of an exemplary parameter setting provided by an embodiment of this application.
  • Figure 3(b) is a second schematic diagram of an exemplary parameter setting provided by an embodiment of this application.
  • FIG. 3(c) is a third schematic diagram of an exemplary parameter setting provided by an embodiment of this application.
  • Fig. 3(d) is a fourth schematic diagram of an exemplary parameter setting provided by an embodiment of this application.
  • FIG. 4 is an exemplary schematic diagram of turning on a target measurement mode according to an embodiment of the present invention.
  • FIG. 5(a) is a first schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention.
  • Figure 5(b) is a second schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention.
  • Fig. 5(c) is a third schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention.
  • FIG. 6 is an exemplary schematic diagram of setting a preset gas concentration threshold according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an exemplary open state prompt provided by an embodiment of the present invention.
  • Fig. 8 is a schematic structural diagram of a ventilation device provided by an embodiment of the present invention.
  • the embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides respiratory support for patients.
  • the ventilation device may be a device with a 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.
  • the gas measurement method may be executed by a gas measurement device.
  • Fig. 1 is a schematic structural diagram of a gas measuring device provided by an embodiment of the present invention.
  • 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 101 and the memory 103, respectively.
  • the gas analysis module 102 is connected to the gas sampling interface 101 and the controller 104 respectively.
  • the controller 104 may be an Application Specific Integrated Circuit (ASIC), a digital signal processor (Digital Signal Processor, DSP), or a digital signal processing device (Digital Signal Processor). At least one of Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), and microprocessor
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSP Digital Signal Processor
  • DSP Digital Signal Processor
  • 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 read only memory (Read Only Memory, ROM), flash memory (flash memory), hard disk (HDD) or solid-state drive (Solid-State Drive, SSD); or a combination of the above types of memory,
  • volatile memory such as a random access memory (Random Access Memory, RAM); or a non-volatile memory (non-volatile memory).
  • ROM read only memory
  • flash memory flash memory
  • HDD hard disk
  • SSD solid-state drive
  • the processor 102 is also provided with a stored monitoring index providing program, which is not limited in the embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a gas measurement method provided by an embodiment of the present invention. As shown in Figure 2, it mainly includes the following steps:
  • the ventilation device when the ventilation device is ventilating, if the controller 104 of the gas measurement device receives a measurement trigger instruction or meets a preset measurement trigger condition, the target measurement mode is activated.
  • the purpose of the controller 104 to enable the target measurement mode is to measure the concentration of the target sampling gas
  • the target sampling gas may be CO 2 , O 2 or other gases.
  • the specific target sampling gas is not limited in the embodiment of the present invention.
  • the controller 104 can receive a measurement trigger instruction instructing to turn on the target measurement mode through a button, switch, or touch screen configured on the ventilation device, so as to turn on the target measurement according to the measurement trigger instruction. mode.
  • 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 is not limited in the embodiment of the present invention.
  • the measurement trigger instruction includes at least one preset trigger time
  • the preset trigger time may include the current time. For example, setting the preset trigger time to 0 indicates the current time.
  • the target measurement mode is turned on when the measurement trigger instruction is received.
  • the measurement trigger instruction indicates that the target measurement mode to be turned on can be the timing measurement mode, the first equal interval measurement mode, the second equal interval measurement mode, the first unequal interval measurement mode, the second unequal interval measurement mode, and the conditional measurement mode. Any kind of.
  • the target measurement mode can also be other user-defined measurement modes.
  • the specific target measurement mode is not limited in the embodiment of the present invention.
  • the preset trigger time is set as the current time, that is, the target measurement mode is turned on when a measurement trigger instruction is received, it can also be considered to refer to a timing measurement mode that includes a preset trigger time.
  • the step of turning on the target measurement mode includes: if it is detected that the setting of the target measurement mode is completed, or if it is detected from the preset measurement mode Assuming that the target duration has elapsed since the moment, it is determined that the measurement trigger condition is met.
  • the ventilation device is usually equipped with an interactive interface, and the user can implement the setting of related items for the target measurement mode through the interactive interface.
  • the controller 104 detects that the setting of the target measurement mode is completed, the target measurement mode can be turned on.
  • the controller 104 starts the timing measurement mode if it detects that the setting of at least one preset trigger time is completed. If the controller 104 detects that the measurement time interval setting is completed, it turns on the first equal interval measurement mode. If the controller 104 detects that the setting of the measurement time interval and the number of measurements is completed, it starts the second equal interval measurement mode. If the controller 104 detects that the setting of the preset time interval change rule is completed, it turns on the first non-equal interval measurement mode. If the controller 104 detects the completion of the measurement time interval, the number of measurements, and the preset irregular measurement settings, it turns on the second non-equal interval measurement mode.
  • the controller 104 If the controller 104 detects that certain setting parameters are completed, it turns on the conditional measurement mode. Of course, in specific implementation, the user can also select the measurement mode first. After the measurement mode is selected, the corresponding measurement time interval, number of times, irregular measurement settings, etc., are output according to the selected measurement mode. User input or selection, the specific implementation method is not limited here.
  • Fig. 3(a) is a schematic diagram 1 of an exemplary parameter setting provided by an embodiment of this application. As shown in Figure 3(a), the user can input the measurement interval as 1h by clicking the box after the CO 2 measurement interval.
  • Fig. 3(b) is a second schematic diagram of an exemplary parameter setting provided by an embodiment of this application. As shown in FIG 3 (b), the user can click the box after the CO 2 measurement times, the input CO 2 measured five times, in addition, CO 2 may also enter automatic measurement start time and end time.
  • Fig. 3(c) is a third schematic diagram of an exemplary parameter setting provided by an embodiment of this application.
  • the target measurement mode is a timing measurement mode
  • the user can input multiple measurement moments, after which the controller 104 can start the timing measurement mode.
  • FIG. 3(d) is a fourth schematic diagram of an exemplary parameter setting provided by an embodiment of this application.
  • the user can set the upper limit or (and) lower limit of the measurement parameters such as the inhaled oxygen concentration FiO2, the peak pressure Ppeak, the inspiratory time Tinsp, and the measurement frequency, or the duration beyond the threshold can be added
  • the controller 104 can start the condition measurement mode.
  • the preset time is A and the target duration is T. If the controller 104 detects that the time period T starts from the time A, the target measurement mode is activated at the time A+T.
  • the specific target measurement mode may be any one of the multiple measurement modes provided above.
  • the preset time A is the initial time at which the controller 104 starts to detect the target duration T.
  • the specific preset time A and the target duration T may be preset according to actual needs, which are not limited in the embodiment of the present invention.
  • Fig. 4 is an exemplary schematic diagram of starting a target measurement mode according to an embodiment of the present invention.
  • the gas to be measured is CO 2
  • the user can click the "start measurement" icon behind CO 2 to start the target measurement mode with the measurement trigger command to measure the CO 2 concentration.
  • the controller 104 detects whether the preset measurement trigger condition is met, and can be turned on in a certain manner.
  • the user can click the long bar icon at the back of the CO 2 automatic measurement. After the circle in the icon leans to the right, the controller 104 will continue to detect whether the preset measurement trigger conditions are met, and When it is satisfied, the target measurement mode is automatically turned on.
  • the above-mentioned measurement mode and corresponding opening mode are only some optional solutions provided.
  • the gas measurement device may also include other measurement modes and corresponding opening methods.
  • S202 Perform a gas concentration measurement operation according to the target measurement mode, and measure the target gas concentration.
  • the controller 104 of the ventilation device after the controller 104 of the ventilation device turns on the target measurement mode, it can control the gas analysis module 102 to perform the gas concentration operation according to the target measurement mode to measure the target gas concentration.
  • the gas sampling interface 101 can collect a target sampling gas
  • 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.
  • the target measurement mode is the timing measurement mode
  • the measurement trigger instruction includes at least one preset trigger moment
  • the step of the controller 104 performing the gas concentration measurement operation according to the target measurement mode includes: following the timing measurement mode
  • the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the controller 104 actually controls the gas analysis module 102 to perform a gas concentration measurement operation when each of at least one preset trigger time arrives.
  • the specific at least one preset trigger moment is not limited in the embodiment of the present invention.
  • At least one preset trigger time includes: time A1 and time A2, and the controller 104 controls the gas analysis module 102 to execute a gas concentration when the time A1 arrives and the time A2 arrives. Measurement operation.
  • the target measurement mode is the first equal interval measurement mode
  • the measurement trigger instruction includes a measurement time interval
  • the step of the controller 104 to perform a gas concentration measurement operation according to the target measurement mode includes: according to the measurement time interval , Periodically control the gas analysis module 102 to perform gas concentration measurement operations.
  • the controller 104 periodically executes the gas concentration measurement operation according to the measurement time interval. In fact, it controls the gas analysis module 102 to execute the gas concentration once every measurement time interval. Measurement operation.
  • the specific measurement time interval is not limited in the embodiment of the present invention.
  • the measurement time interval is T0
  • the controller 104 controls the gas analysis module 102 to perform a gas concentration operation every time interval T0.
  • the target measurement mode is the second equal interval measurement mode
  • the measurement trigger instruction includes the measurement time interval and the number of measurements
  • the step of the controller 104 performing the gas concentration measurement operation according to the target measurement mode includes: During the measurement time interval, the gas analysis module 102 is uniformly controlled to perform the gas concentration measurement operation according to the number of measurements.
  • the controller 104 actually divides the number of measurements evenly into the measurement time interval, and executes 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.
  • the measurement time interval is T1
  • the number of measurements is 3
  • the controller 104 divides the 3 measurements evenly into the T1 time period, and the time lengths between the measurement moments are all equal, and At each divided time, the gas analysis module 102 is controlled to perform a gas concentration operation.
  • the target measurement mode is the first non-equal interval measurement mode
  • the measurement trigger instruction includes a preset time interval change rule
  • the steps of the controller 104 to perform a gas concentration measurement operation according to the target measurement mode include: At least one measurement time is determined according to the preset time interval change rule; when each measurement time comes, the gas analysis module 102 is respectively controlled to perform a gas concentration measurement operation.
  • the preset time interval change rule can be set according to actual measurement needs.
  • the specific preset time interval change rule is not limited in the embodiment of the present invention.
  • the preset time interval change rule is the interval of 2 minutes between the start of measurement and the first measurement, and the square of 2 minutes between the second measurement and the first measurement, that is, 4 minutes.
  • the third measurement and the second measurement are separated by a cubic duration of 2 minutes, that is, 8 minutes.
  • the controller 104 determines three measurement moments according to the preset time, so that each of the three measurement moments is measured When the time comes, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the target measurement mode is the second non-equal interval measurement mode
  • the measurement trigger instruction includes the measurement time interval, the number of measurements, and the preset irregular measurement mode
  • the controller 104 executes the gas according to the target measurement mode.
  • the steps of the concentration measurement operation include: according to the measurement time interval, the number of measurements and the preset irregular measurement method, determine the target time of the number of measurements within the preset measurement time interval; when each target time comes, control the gas analysis module 102 performs a gas concentration measurement operation.
  • the irregular measurement mode indicates how to irregularly perform the gas concentration measurement operation 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 mode can be determined according to actual measurement requirements, which are not limited in the embodiment of the present invention.
  • the measurement time interval is 30 minutes
  • the number of measurements is 3 times
  • the preset irregular measurement mode is 5 minutes between the time of the first measurement and the time when the target measurement mode is currently turned on.
  • the second measurement time is 9 minutes apart from the first measurement time
  • the third measurement time is 16 minutes apart from the second measurement time.
  • the controller 104 may determine three target moments according to the above-mentioned measurement time interval, the number of measurements, and the preset irregular measurement mode, so as to control the gas analysis module 102 to perform the gas concentration operation when each target moment arrives.
  • the irregular measurement method can also be associated with the measurement result. If the measurement result this time falls within the normal range, the time interval for the next measurement can be extended; if the measurement result this time does not fall within the normal range, the measurement result can be shortened. The time interval for the next measurement.
  • the target measurement mode is the conditional measurement mode
  • the steps of the controller 104 performing the gas concentration measurement operation according to the target measurement mode include:
  • the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the controller 104 obtains monitoring parameters and/or setting parameters according to the conditional measurement mode.
  • the monitoring parameters can 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 parameter may be one or more of a ventilation control parameter, a parameter threshold used to determine a judgment rule, and a parameter abnormality duration set by the user.
  • the ventilation control parameters may include one or more of ventilation pressure, ventilation oxygen concentration, end-tidal pressure, inspiratory time, respiratory frequency, and the like.
  • the parameter threshold can include the monitoring parameter threshold and the ventilation control parameter threshold.
  • the monitoring parameter threshold corresponds to each selected monitoring parameter.
  • the monitoring parameter threshold can determine whether the corresponding parameter is abnormal; the ventilation control parameter threshold corresponds to each ventilation control parameter, and the ventilation control parameter threshold can be Determine the trigger judgment rule.
  • the parameter abnormal 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 of ventilation monitoring parameters or control parameters exceeding the threshold, that is, the measurement can be triggered immediately after the monitoring parameter or setting parameter exceeds the threshold, or after the monitoring parameter or setting parameter exceeds the threshold, after a preset time, Trigger the measurement again.
  • the specific preset frequency can be set according to actual measurement requirements, which is not limited in the embodiment of the present invention.
  • the controller 104 may obtain the monitoring parameter according to the preset frequency to determine whether the preset measurement trigger condition is satisfied. In the case of determining whether the measurement trigger condition is satisfied by the ventilation control parameter, the controller 104 may set or modify the preset ventilation control parameter according to the latest value of the ventilation control parameter and the corresponding ventilation control parameter threshold after a certain ventilation control parameter is set or updated. Trigger the judgment rule, and subsequently judge whether the parameter measurement condition is satisfied according to the trigger judgment rule. For example, when the ventilation pressure is changed from 8 cm of water to 5 cm of water, the controller 104 may modify the trigger judgment rule from once every 2 hours to once every hour.
  • the preset trigger judgment rule may be judging whether the acquisition of monitoring parameters and/or setting parameters reach a certain level or are within a certain range. If the monitoring parameters and/or setting parameters reach a certain level or are within a certain range, it is determined that the parameter constraint conditions are satisfied. 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 conditions are not met.
  • the specific trigger judgment rule is not limited in the embodiment of the present invention.
  • the controller 104 may obtain the airway pressure once. If the specific value of the airway pressure acquired by the controller 104 is within the preset interval, 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 every time it is determined to be satisfied.
  • the controller 104 may also output measurement prompt information before controlling the gas analysis module 102 to perform the gas concentration measurement operation.
  • the measurement prompt information is used to prompt the user whether to agree to the current controller 104 controlling the gas analysis module 102 to perform the gas concentration operation.
  • the measurement prompt information output by the controller 104 is the text "whether the gas concentration operation is currently performed", 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.
  • the controller 104 after the controller 104 outputs the measurement prompt information, before controlling the execution of the gas analysis module 102 to perform the gas concentration measurement operation, the following steps may also be performed: detecting whether the measurement confirmation information is received; if the measurement confirmation is received Information, the gas analysis module 102 is triggered to perform a gas concentration measurement operation.
  • the controller 104 outputs measurement prompt information to prompt the user whether to perform the gas concentration measurement operation currently.
  • the user needs to send information about 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 is received, it indicates 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.
  • the controller 104 before the controller 104 controls the gas analysis module 102 to perform the gas concentration measurement operation, it needs to control the air supply flow rate of the ventilation device to decrease or stop the preset suppressing ventilation duration.
  • the controller 104 can effectively prevent the target gas sample from being diluted by fresh gas by controlling the air supply flow rate of the ventilation device to decrease or stop the preset period of suppressing ventilation, so that the gas analysis module 102 can measure the accurate target gas concentration.
  • the controller 104 may only consider that the measurement trigger condition is satisfied after detecting that the target time period has elapsed from the preset time to start the target gas concentration measurement. After the target time period has elapsed from the preset time, the controller 104 can reduce or stop the flow rate of the ventilation device to suppress ventilation, so that a more accurate target gas concentration can be detected when the target gas concentration measurement is turned on. .
  • the controller 104 before the controller 104 controls the ventilation device to reduce the air flow rate or stops the preset suppressed ventilation duration, the controller 104 further includes: receiving a ventilation suppression duration setting instruction; and setting the preset suppressed ventilation according to the ventilation suppression duration setting instruction duration.
  • 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 ventilation suppression duration setting instruction set the preset suppression ventilation duration, including adding, modifying, or closing any of the preset suppression ventilation durations. If the ventilation suppression duration setting instruction instructs to set the preset ventilation suppression duration to 0, it means to turn off suppression ventilation.
  • the preset duration of suppression of ventilation can also be modified to 0, so as to achieve manual premature termination of suppressed ventilation. After manually ending the suppression ventilation early, the gas concentration measurement operation can be performed immediately.
  • the specific preset duration of suppressing ventilation is not limited in the embodiment of the present invention.
  • the method before the controller 104 controls the gas analysis module 102 to perform the gas concentration measurement operation, the method further includes: outputting one or more of ventilation suppression prompt information, recommended action information, and setting item prompt information.
  • the controller 104 can output in advance one or more of the corresponding ventilation suppression prompt information, recommended action information, and setting item prompt information to ensure that medical staff are informed of relevant information. Once the patient develops discomfort or other symptoms, they can promptly execute the corresponding Medical operation.
  • the ventilation suppression prompt information may specifically be text or patterns for prompting that the ventilation device will be in a ventilation suppression state.
  • the recommended action information may specifically be information about some actions that the patient needs to avoid performing when the ventilation device is in a ventilating state.
  • the setting item prompt information can specifically be the set ventilation suppression time and the function prompt information of various measurement setting items. The specific ventilation suppression prompt information, recommended measures information, and setting item prompt information are not limited in the embodiment of the present invention.
  • the ventilation suppression prompt information output by the controller 104 is "pause ventilation during measurement"
  • the recommended action information is "try to avoid opening mouth breathing”
  • the setting item prompt information is "pause ventilation duration is S seconds”.
  • the controller 104 after the controller 104 measures the target gas concentration, it further includes: acquiring a target identifier corresponding to the target measurement mode; and based on the target identifier, outputting the target gas concentration in a preset output mode.
  • the target identifier is a specific identifier that can characterize the target measurement mode used when the controller 104 outputs the target gas concentration in a preset output mode.
  • the target identifier is not limited to specific graphics, colors, and text or alphabetic characters.
  • the target measurement mode is the timing measurement mode
  • the target identification corresponding to the timing measurement mode is red.
  • the color of the corresponding waveform curve is red.
  • the specific target identifier can be preset according to actual needs, and is not limited in the 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 contrast waveform mode, and a chart mode.
  • the chart mode can be any one of a graph, a histogram, a trend graph, a pie chart, a bar graph, and a spider graph.
  • the compression waveform mode can include a full compression waveform mode and a partial compression waveform mode.
  • you can also record measurement-related elements such as measurement time and measurement times in the image output according to the preset output mode, making the image information more abundant.
  • the preset output mode may also include other types of modes, and the specific preset output mode is not limited in the embodiment of the present invention.
  • FIG. 5(a) is a first schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention. As shown in Figure 5(a), the target sample gas is actually CO 2 , and the corresponding target gas concentration is the CO 2 concentration.
  • the controller 104 outputs CO according to the CO 2 concentration measured by the gas analysis module 102 according to the real-time waveform mode. 2 Real-time waveform.
  • Fig. 5(b) is a second schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention.
  • the target sample gas is actually CO 2
  • the corresponding target gas concentration is the CO 2 concentration.
  • Compressed waveform controller 104 according to the local mode, not on measuring the concentration of CO 2, i.e., no CO 2 concentration range is compressed output, to maintain the normal standard waveform of the output of the measured CO 2 concentration range.
  • the target measurement mode is the timing measurement mode
  • the corresponding target identification is a dot.
  • the dot is used to identify the target gas concentration in the graph. value.
  • the target measurement mode is the conditional measurement mode, and the corresponding target is marked as a square.
  • the target gas concentration value is marked in the graph with a square.
  • Fig. 5(c) is a third schematic diagram of output of an exemplary target gas concentration provided by an embodiment of the present invention.
  • the target sampling gas is actually CO 2
  • the corresponding target gas concentration is the CO 2 concentration
  • the preset output mode is the trend graph mode.
  • the target measurement mode is the conditional measurement mode
  • the corresponding target identification is a square
  • the target measurement mode is the first equal interval measurement mode
  • the corresponding target identification is a circle
  • the target measurement mode is the timing measurement mode.
  • the corresponding target identifier is a triangle.
  • the CO 2 concentration measured in different measurement modes is marked with the corresponding target identifier in the figure.
  • the controller 104 when the controller 104 executes the step of outputting the target gas concentration in a preset output manner, it further includes: marking the preset gas concentration threshold in a preset marking manner.
  • the target gas concentration when the target gas concentration is output according to the preset output mode based on the target identifier, only the target measurement mode is reflected.
  • the preset gas concentration threshold may be marked to reflect the relationship between the measured target gas concentration and the preset gas concentration threshold.
  • the preset gas concentration threshold may include a maximum threshold and a minimum threshold, and both can be marked.
  • the specific preset gas concentration threshold is not limited in the embodiment of the present invention.
  • Fig. 6 is an exemplary schematic diagram of setting a preset gas concentration threshold according to an embodiment of the present invention.
  • the preset gas concentration threshold includes the maximum threshold and the minimum threshold.
  • the user can click or drag the corresponding icon after the maximum threshold and the minimum threshold by selecting the tool to make the circle in the icon lean to the right, that is, enable the setting , And then enter the corresponding thresholds, namely 50mmHg and 15mmHg, to complete the setting.
  • the preset marking method includes one or more of a reference line method, a scale method, a color method, and a numerical value blinking method.
  • the preset marking manner may also be other marking manners customized by the user, which is not limited in the embodiment of the present invention.
  • the controller 104 when the controller 104 outputs the target gas concentration in a real-time waveform manner, it marks the maximum threshold and the minimum threshold included in the preset gas concentration threshold in the waveform by means of a reference line.
  • the controller 104 marks the maximum threshold and the minimum threshold included in the preset gas concentration threshold in the waveform by means of a reference line.
  • multiple target gas concentration values measured at multiple times are marked, and it can be seen intuitively whether the target gas concentration value at each time exceeds the preset gas concentration threshold.
  • the controller 104 executes the step of turning on the target measurement mode, it further includes: outputting the target measurement mode and/or outputting the measurement state.
  • the target measurement mode may be output after the target measurement mode is turned on.
  • the target measurement mode can be any one of timing measurement mode, first equal interval measurement mode, second equal interval measurement mode, first unequal interval measurement mode, second unequal interval measurement mode, and conditional measurement mode.
  • the measurement status may specifically include the gas concentration measurement start, the measurement is about to start, the measurement is in progress, and the measurement has ended.
  • the specific measurement state is not limited in the embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an exemplary open state prompt provided by an embodiment of the present invention.
  • the controller 104 executes to turn on the target measurement mode, and the specific target measurement mode is the first equal interval measurement mode.
  • the controller 104 outputs the CO2 concentration in the compressed waveform mode, it outputs the icon corresponding to the first equal-interval measurement mode and the related text "measurement on" of the measurement state, which is displayed in the upper right corner of the waveform diagram.
  • the controller 104 when the controller 104 executes the step of controlling the gas analysis module 102 to perform the gas concentration measurement operation according to the target measurement mode, it can output the text "10 seconds before the start of the measurement” in a text prompt manner.
  • the measurement is about to start
  • the text “Measuring in progress” is output when the measurement is in progress
  • the text “Measuring has ended” is output when the measurement is over.
  • the embodiment of the present invention provides a gas measurement method, which is applied to a ventilation device that provides breathing support for a patient. During ventilation of the ventilation device, if a measurement trigger instruction is received or a preset measurement trigger condition is detected, then Turn on the target measurement mode; execute the gas concentration measurement operation according to the target measurement mode, and 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 the patient to measure the target gas concentration in the patient's exhaled air, and the measurement method is simple and flexible.
  • the embodiment of the present invention also provides a gas measuring device, which is applied to a ventilation device that provides respiratory support for patients.
  • 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;
  • Gas sampling interface 101 to collect target sampling gas
  • the gas analysis module 102 is respectively connected to the gas sampling interface 101 and the controller 103, and measures the concentration of the target sample gas output by the gas sampling interface under the control of the controller;
  • 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:
  • the target measurement mode is turned on
  • the control gas analysis module 102 executes the gas concentration measurement operation according to the target measurement mode, and measures the target gas concentration.
  • the target measurement mode is a timing measurement mode
  • the measurement trigger instruction includes at least one preset trigger moment
  • the controller 104 controls the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode.
  • the steps include:
  • the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the target measurement mode is the first equal interval measurement mode
  • the measurement trigger instruction includes a measurement time interval
  • the steps of the controller 104 controlling the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode include:
  • the gas analysis module 102 is periodically controlled to perform a gas concentration measurement operation.
  • the target measurement mode is the second equal interval measurement mode
  • the measurement trigger instruction includes the measurement time interval and the number of measurements
  • the steps of the controller 104 controlling the gas analysis module 102 to perform the gas concentration measurement operation according to the target measurement mode include:
  • the gas analysis module is uniformly controlled to perform the gas concentration measurement operation according to the number of measurements.
  • the target measurement mode is the first non-equal interval measurement mode
  • the measurement trigger instruction includes a preset time interval change rule
  • 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:
  • At least one measurement moment is determined according to the preset time interval change rule; when each measurement moment arrives, the gas analysis module 102 is controlled to perform the gas concentration measurement operation.
  • the target measurement mode is the second non-equal interval measurement mode
  • the measurement trigger instruction includes the measurement time interval, the number of measurements, and the preset irregular measurement mode.
  • the controller 104 controls the gas analysis module 102 to execute the gas concentration according to the target measurement mode.
  • the steps of the measurement operation include:
  • the target time of the number of measurements is determined within the measurement time interval; when each target time comes, the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the target measurement mode is a conditional measurement mode
  • the steps of the controller 104 controlling the gas analysis module 102 to perform a gas concentration measurement operation according to the target measurement mode include:
  • preset trigger judgment rules and acquired monitoring parameters and/or setting parameters, judge whether the preset measurement trigger conditions are met;
  • the gas analysis module 102 is controlled to perform a gas concentration measurement operation.
  • the controller 104 before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:
  • the device further includes a receiving module.
  • the controller 104 After outputting the measurement prompt information, the controller 104 further executes the following steps before controlling the gas analysis module 102 to perform the gas concentration measurement operation:
  • 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.
  • the controller 104 when controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:
  • Control the ventilation device to reduce the air flow rate or stop the preset inhibiting ventilation time.
  • the device further includes a receiving module, and the controller 104 further executes the following steps before controlling the air delivery flow rate of the ventilating device to decrease or stopping the preset suppressing ventilation time:
  • the preset duration of ventilation suppression is set according to the ventilation suppression duration setting instruction received by the receiving module.
  • the step of turning on the target measurement mode includes:
  • the controller 104 before controlling the gas analysis module 102 to perform the gas concentration measurement operation, the controller 104 further performs the following steps:
  • controller 104 After the controller 104 measures the target gas concentration, it further executes the following steps:
  • the target gas concentration is output according to the preset output mode.
  • 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 contrast waveform mode, and a chart mode.
  • controller 104 further executes the following steps when outputting the target gas concentration according to the preset output mode:
  • the preset marking method includes one or more of a reference line method, a scale method, a color method, and a numerical value flashing method.
  • the controller 104 further executes the following steps:
  • FIG. 8 is a schematic structural diagram of a ventilation device provided by an embodiment of the present invention.
  • the ventilation equipment not only includes a gas measuring device 8001, but also includes a gas source 802, a breathing tube 803 and a display 804;
  • Gas source 802 which provides gas during ventilation
  • the breathing tube 803 is connected with the air source 802 to provide a breathing path during ventilation;
  • the gas measuring device 801 is connected with the breathing tube 803, the gas source 802 and the display 804, and the gas measuring device 801 measures the target gas concentration during the ventilation process.
  • the embodiment of the present invention provides a computer-readable storage medium, 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.
  • the technical solution provided by the embodiment of the present invention can perform gas concentration measurement operations according to different modes when ventilating the patient to measure the target gas concentration in the patient's exhaled air, and the measurement method is simple and flexible.
  • the embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may adopt the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. Moreover, the present invention 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, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable signal processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable signal processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
  • the target measurement mode is turned on; the gas concentration measurement is performed according to the target measurement mode Operate 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 the patient to measure the target gas concentration in the patient's exhaled air, and the measurement method is simple and flexible.

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Abstract

La présente invention concerne un procédé et un appareil de mesure de gaz, un dispositif de ventilation et un support de stockage. Le procédé comprend les étapes consistant à : lors d'un processus de mise en œuvre d'une ventilation par le dispositif de ventilation, en cas de réception d'une instruction de déclenchement de mesure ou de détection qu'une condition de déclenchement de mesure prédéfinie est satisfaite, activer un mode de mesure cible (S201) ; et réaliser une opération de mesure de concentration de gaz selon le mode de mesure cible pour mesurer la concentration de gaz cible (S202).
PCT/CN2019/093896 2019-06-28 2019-06-28 Procédé et appareil de mesure de gaz, dispositif de ventilation et support de stockage Ceased WO2020258316A1 (fr)

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PCT/CN2019/093896 WO2020258316A1 (fr) 2019-06-28 2019-06-28 Procédé et appareil de mesure de gaz, dispositif de ventilation et support de stockage

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