Operation state detection device for heating and humidifying equipment for artificial respirator and operation state monitoring program for heating and humidifying equipment for artificial respirator

Abstract

To provide a system in which a power source state of heating and humidifying equipment is detected only after a ventilation operation of an artificial respirator is started, and a power source state is not detected in an idling operation when the artificial respirator and the heating and humidifying equipment are used simultaneously.SOLUTION: An operation state detection device 10 for heating and humidifying equipment for an artificial respirator includes: an artificial respirator power source unit 2 which is a power source for the artificial respirator 20; a power source unit 3 for heating and humidifying equipment for the artificial respirator, which is a power source for the heating and humidifying equipment 30 for the artificial respirator; a current sensor 4 for the artificial respirator for detecting electric currents of the artificial respirator 20; a current sensor 5 for the heating and humidifying equipment for the artificial respirator for detecting electric currents of the heating and humidifying equipment 30; an arithmetic processing unit 6 for processing each sensor signal from the two current sensors 4 and 5; and a display unit 9 for displaying a result of the arithmetic processing by the arithmetic processing unit 6.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an operating status detection device for a heated humidifier for an artificial ventilator and an operating status monitoring program for a heated humidifier for an artificial ventilator, and in particular to an operating status detection device for a heated humidifier for an artificial ventilator that is effective in preventing the user from forgetting to turn on the heated humidifier while the artificial ventilator is in use. [Background technology]

[0002] When using a ventilator, the gas being delivered must be heated and humidified, so a dedicated heated and humidifier is used. However, the ventilator and heated and humidifier often have independent power systems, and their operations are not linked. Therefore, the heated and humidifier must be started manually, and confirmation that the heated and humidifier is turned on while the ventilator is in operation must be made visually.

[0003] In medical settings, incidents (cases) of forgetting to turn on a heated humidifier while using a ventilator can occur in both neonatal and adult settings. Forgetting to turn on a heated humidifier, especially in neonatal settings, is highly likely to cause serious respiratory problems. Therefore, measures to deal with such incidents are important.

[0004] The non-patent document listed below discloses a technology for determining whether a heated humidifier has been left on, which was developed as a countermeasure against such incidents. The flow of determination presented there is as follows. Step 1: By plugging the power strip into an outlet, power will be supplied and the microcontroller will start up. 2. The current when the ventilator is turned on and the current of the heated humidifier are detected using a non-contact current sensor. Step 3: Input the two current sensor values ​​into the microcontroller board. 4. If the current sensor fails to detect current from the humidifier after a certain period of time has elapsed, it will determine that the humidifier has been left on. 5. Based on this judgment, the microcontroller will sound an alarm. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] "Development of a device to prevent forgetting to turn on the heated humidifier while using a ventilator" (J-GLOBAL article, Aomori Prefectural Central Hospital, Comprehensive Perinatal Maternal and Child Medical Center, Department of Neonatology, author: Takashi Amitsuka) Summary of the Invention [Problem to be solved by the invention]

[0006] The document states that this determination technology was used to measure the amount of change in current value associated with changes in the state of the humidifier, and that it was confirmed that the non-contact current sensor could detect when the humidifier was left on, and that the non-contact current sensor is advantageous from a safety perspective because it does not interfere with the current flow from the power source to the medical device. However, there is still room for improvement.

[0007] In other words, the current detected when the ventilator is turned on does not necessarily mean that the ventilator is in operation, and there is a possibility of false detection. Generally, ventilators have an internal battery, so if you try to determine whether the ventilator is operating based solely on the increase in current when the power is turned on, there is a possibility that it will falsely detect that ventilation has started while the battery is charging, that is, before the ventilator has actually started ventilation.

[0008] In this case, if the current to the heated humidifier is not detected, the determination technology in the above document will sound an alarm. It is undesirable to sound an alarm about the power supply status of the heated humidifier when the ventilator has not yet actually started ventilation. A system that detects the power supply status of the heated humidifier only after the ventilator has started ventilation and does not detect the power supply status during idling operation, thereby preventing unnecessary alarms from being sounded, is desirable.

[0009] Furthermore, while the technology disclosed in the above document takes measures to prevent the humidifier from being left on, it does not mention or suggest what to do if the ventilator is turned off. In other words, if the humidifier continues to operate while the ventilator is not in operation, it will run dry. Technology that can prevent this is also needed. Furthermore, it is desirable to provide redundancy by using other means in addition to the warning sound when an abnormality occurs, rather than relying solely on a warning sound.

[0010] The problem that the present invention aims to solve is to further improve the technology disclosed in the above document, which prevents a situation in which, when using a ventilator and a heated humidifier simultaneously, the ventilator is left operating alone because the heated humidifier is not powered on due to carelessness on the part of the operator, and to provide a system in which the power status of the heated humidifier is detected only after the ventilator has started ventilation, and the power status is not detected when the ventilator is idling, thereby preventing unnecessary alarms from being issued.

[0011] Another problem to be solved by the present invention is to provide a technology that can prevent the humidifier from running dry when the ventilator and humidifier are used simultaneously, even when the ventilator is not turned on.

[0012] Another problem to be solved by the present invention is to provide a system that provides redundancy in the warning method in the event of an abnormality when using an artificial respirator and a heated humidifier simultaneously. [Means for solving the problem]

[0013] As a result of studying the above-mentioned problems, the inventors of the present application discovered that the problem could be solved by detecting the operating state of the ventilator not simply by detecting an increase in current when the power is turned on, but by capturing the pattern of current changes caused by breathing (ventilation), and when this is detected, determining that the ventilator is operating, and then monitoring the operating state of the heated humidifier from that point on, and based on this discovery, they completed the present invention. That is, the invention claimed in this application, or at least the invention disclosed therein, as a means for solving the above-mentioned problems, is as follows.

[0014] [1] A device for detecting the operating state of a heated humidifier for a ventilator, comprising: a ventilator power supply unit that is a power source for the ventilator; a ventilator heated humidifier power supply unit that is a power source for the ventilator heated humidifier; a ventilator current sensor that detects the current of the ventilator; a ventilator heated humidifier current sensor that detects the current of the ventilator heated humidifier; a processing unit that processes the sensor signals from both current sensors; and a display unit that displays the results of the processing by the processing unit. [2] The device for detecting an operating state of a heated humidifier for a ventilator according to [1], wherein the arithmetic processing unit is configured to include a sensor signal processing unit that converts the sensor signal from the current sensor into a voltage, and an operating state detection unit that detects the operating states of the ventilator and the heated humidifier for a ventilator based on the signal processed by the sensor signal processing unit. [3] The operating state detection device for a heated humidifier for a ventilator according to [2], wherein the operating state detection unit determines that the ventilator is operating when the processed signal related to the ventilator shows a current change pattern due to the breathing action of the ventilator. [4] The operating state detection device for a heated humidifier for a ventilator according to [2], wherein the operating state detection unit determines that the heated humidifier for a ventilator is operating when power-on is detected by the processed signal related to the heated humidifier for a ventilator. [5] The operating state detection device for a heated humidifier for a ventilator according to [3], wherein the operating state detection unit determines that an abnormality has been detected in the heated humidifier for a ventilator when it has determined that the ventilator is operating and when power-on by the processed signal related to the heated humidifier for a ventilator has not been detected.

[0015] [6] The operating state detection device for a heated humidifier for a ventilator according to [3], wherein the operating state detection unit determines that unnecessary operation of the heated humidifier for a ventilator has been detected when power-on is detected by the processed signal related to the heated humidifier for a ventilator and operation of the ventilator has not been detected. [7] The operating state detection device for a heated humidifier for a ventilator described in [2], wherein the operating state detection unit determines that an abnormality has been detected in the heated humidifier for a ventilator when it detects a state in which humidification water needs to be supplied based on the processed signal related to the heated humidifier for a ventilator. [8] The operating state detection device for a heated humidifier for a ventilator according to any one of [2], [3], [4], [5], [6], and [7], characterized in that the calculation processing unit is configured to include an operation processing unit that generates a display to be output to the display unit based on detection by the operating state detection unit. [9] The device for detecting the operating state of a heated humidifier for a ventilator according to any one of [1], [2], [3], [4], [5], [6], and [7], characterized in that the display unit is provided with at least one of a visual information display unit that displays visual information and an auditory information display unit that displays auditory information.

[10] The operating state detection device for a heated humidifier for a ventilator according to [8], characterized in that the display unit is provided with at least one of a visual information display unit that displays visual information and an auditory information display unit that displays auditory information.

[0016]

[11] A program for monitoring the operating state of a heated humidifier for a ventilator by instructing the operating state detection device for a heated humidifier for a ventilator described in any one of [2], [3], and [4] to monitor the operating state of the heated humidifier for a ventilator, the program comprising: a respiratory action pattern confirmation step for determining whether the processed signal related to the ventilator is a current change pattern due to the respiratory action of the ventilator after starting to monitor a sensor signal from a current sensor for the ventilator; a heated humidifier operation confirmation step for determining whether the processed signal related to the heated humidifier for a ventilator has been detected if the respiratory action pattern confirmation step determines that the processed signal has been detected; and an alarm display step for displaying an alarm indicating that the power to the heated humidifier for a ventilator has not been turned on on the display unit if the processed signal has not been detected in the heated humidifier operation confirmation step.

[12] The program for monitoring the operating status of a heated humidifier for a ventilator according to

[11] , further comprising: a ventilator operation confirmation step for determining whether or not the processed signal related to the ventilator has been detected after starting to monitor a sensor signal from the current sensor for the heated humidifier for a ventilator; and a second alarm display step for displaying an alarm indicating that the power supply to the ventilator is not turned on on the display unit if the detection of the processed signal is not confirmed in the ventilator operation confirmation step.

[13] A program for monitoring the operating status of a heated humidifier for a ventilator according to either

[11] or

[12] , characterized in that it includes a water supply necessity confirmation procedure for determining whether a water supply for humidification is required based on the processed signal related to the heated humidifier for a ventilator after starting to monitor a sensor signal from a current sensor for the heated humidifier for a ventilator, and a third alarm display procedure for displaying an alarm display indicating the consumption of humidification water by the heated humidifier for a ventilator on the display unit if a water supply necessity state is confirmed in the water supply necessity confirmation procedure. [Effects of the Invention]

[0017] The ventilator heated humidifier operation status detection device and ventilator heated humidifier operation status monitoring program of the present invention are configured as described above, so that when a ventilator and a ventilator heated humidifier (hereinafter simply referred to as a "heated humidifier") are used simultaneously, the power status of the humidifier is detected only after the ventilator begins ventilation, and power status detection is not performed during idling, preventing unnecessary alarms from being issued.

[0018] Furthermore, when the ventilator and humidifier are used simultaneously, the device for detecting the operating status of a humidifier for use with a ventilator of the present invention can effectively prevent the humidifier from running dry when the ventilator is not powered on and the humidifier continues to operate.

[0019] Furthermore, with the present invention, when the ventilator and humidifier are used simultaneously, a warning method for an abnormality can be provided by providing visual information, such as light emission, in addition to auditory information, i.e., voice, providing redundancy.

[0020] Until now, measures have been taken to prevent forgetting to turn on the heated humidifier when using a ventilator using a checklist or the like, but this invention detects the status of the equipment in real time and warns medical personnel with light or sound if the heated humidifier is not working, preventing medical errors due to careless mistakes.In addition, if the heated humidifier is working but the ventilator is not, a light or sound warning will be issued, preventing medical errors. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is an explanatory diagram showing the basic configuration of a device for detecting the operating state of a heated humidifier for a ventilator according to the present invention. FIG. [Figure 2] 1 is an explanatory diagram showing, as detection examples 1 to 5, the operating states of an artificial respirator and a heated humidifier that can be detected by the operating state detection unit 8 of the heated humidifier operating state detection device 10. FIG. [Figure 3]FIG. 10 is an explanatory diagram showing another example of the configuration of the device for detecting the operating state of a heating humidifier for an artificial respirator according to the present invention. [Figure 4] FIG. 1 is a flow chart showing the basic configuration of a program for monitoring the operating status of a heated humidifier for a ventilator according to the present invention. [Figure 5] FIG. 10 is a flow chart showing another example (part 1) of the configuration of the program for monitoring the operational state of a heating humidifier for a ventilator according to the present invention. [Figure 6] FIG. 10 is a flow chart showing another example (part 2) of the configuration of the program for monitoring the operational state of a heating humidifier for a ventilator according to the present invention. [Figure 7] 1 is an explanatory diagram showing the configuration of an embodiment of a device for detecting the operating state of a heated humidifier for an artificial respirator according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be described in detail below with reference to the drawings. 1 is an explanatory diagram showing the basic configuration of a device for detecting the operating state of a ventilator heated humidifier according to the present invention. As shown in the figure, this device 10 (heated humidifier operating state detection device 10) is a device for detecting the operating state of a ventilator heated humidifier 30 (heated humidifier 30), and is mainly composed of a ventilator power supply unit 2 that serves as the power source for the ventilator 20, a ventilator heated humidifier power supply unit 3 (heated humidifier power supply unit 3) that serves as the power source for the humidifier 30, a ventilator current sensor 4 for detecting the current of the ventilator 20, a ventilator heated humidifier current sensor 5 (heated humidifier current sensor 5) for detecting the current of the humidifier 30, a calculation processing unit 6 that processes the sensor signals from both current sensors 4 and 5, and a display unit 9 that displays the results of calculations performed by the calculation processing unit 6.

[0023] With this heated humidifier operating state detection device 10 configured as described above, the ventilator 20 is connected to the ventilator power supply unit 2 and becomes operable upon receiving power supply, the heated humidifier 30 is connected to the heated humidifier power supply unit 3 and becomes operable upon receiving power supply, the current of the ventilator 20 is detected by the ventilator current sensor 4, the current of the heated humidifier 30 is detected by the heated humidifier current sensor 5, the sensor signals from both current sensors 4, 5 are processed by the arithmetic processing unit 6, and the results of the arithmetic processing by the arithmetic processing unit 6 are displayed on the display unit 9. In this way, the operating state of the heated humidifier 30 is detected by the device 10.

[0024] As shown in Figure 1, the present heated humidifier operating state detection device 10 can be configured so that its calculation processing unit 6 includes a sensor signal processing unit 7 that converts the sensor signals from the current sensors 4 and 5 into voltages, and an operating state detection unit 8 that detects the operating states of the ventilator 20 and heated humidifier 30 based on the signals processed by the sensor signal processing unit 7.

[0025] In the calculation processing unit 6 of the heated humidifier operating state detection device 10 configured as described above, the sensor signal processing unit 7 converts the sensor signals from the current sensors 4 and 5 into voltages, and the operating state detection unit 8 detects the operating states of the ventilator 20 and the heated humidifier 30 based on the signals processed by the sensor signal processing unit 7. Examples of the operating states of both devices 20 and 30 that can be detected by the operating state detection unit 8 are given below.

[0026] 2 is an explanatory diagram showing detection examples 1 to 5 of the operating states of the artificial respirator and the heated humidifier that can be detected by the operating state detection unit 8 of the heated humidifier operating state detection device 10. The description will also be made with reference to FIG. First, detection example 1 shows an algorithm for detecting the operation of the ventilator 20. When the processed signal Sg20 related to the ventilator 20 generated by the sensor signal processing unit 7 shows a current change pattern due to the breathing action of the ventilator 20 (hereinafter also referred to as a "breathing pattern"), the operation state detection unit 8 determines that "operation of the ventilator 20 has been detected" and outputs this as a detection result.

[0027] Here, the current change pattern (breathing pattern) due to the breathing action of the ventilator 20 refers to a current detection pattern that is obtained as a characteristic pattern when the ventilator 20 is performing its function, that is, when the ventilator 20 is in a state of breathing (ventilation). In other words, the current change pattern (breathing pattern) due to the breathing action of the ventilator 20 is a current change pattern that can be distinguished from the current detection pattern when the ventilator 20 is in an idling state, such as when charging, and is not in a state of breathing (ventilation). Such a breathing pattern can be obtained, for example, by previously identifying the current change pattern during breathing through prior measurement.

[0028] As described above, the techniques disclosed in the above documents detect current when the ventilator is powered on (powered ON). However, this does not necessarily mean that the ventilator is in operation, i.e., breathing, and there is a possibility that the ventilator may erroneously detect that breathing has started before breathing has actually started, which is undesirable. However, the configuration and operation of the device 10 of the present invention shown in Detection Example 1 can effectively prevent such erroneous detection by using the current change pattern (breathing pattern) due to breathing as a judgment criterion. The detection algorithm shown in Detection Example 1 is the premise for Detection Example 3, which will be described later.

[0029] Detection example 2 in Fig. 2 shows an algorithm for detecting the operation of heated humidifier 30. When the processed signal Sg30 related to the ventilator heated humidifier (processed signal Sg30 related to the heated humidifier) ​​generated by sensor signal processing unit 7 indicates that heated humidifier 30 has been powered on (power ON), operation status detection unit 8 determines that "operation of heated humidifier 30 has been detected" and outputs this as the detection result. The detection algorithm shown in this detection example 2 is the premise for detection example 4, which will be described later.

[0030] 2 shows an algorithm for detecting power failure (power OFF) as an abnormality of the heated humidifier 30. When a determination is made that "operation of the ventilator 20 is detected" based on the processed signal Sg20 related to the ventilator generated by the sensor signal processing unit 7, and when the processed signal Sg30 related to the heated humidifier also generated by the sensor signal processing unit 7 does not indicate that the heated humidifier 30 is powered on (power ON), i.e., indicates that the power is not supplied (power OFF), the operation status detection unit 8 determines that "an abnormality of the heated humidifier 30 is detected: power failure (power OFF)" and outputs this as the detection result.

[0031] Detection example 4 in Fig. 2 shows an algorithm for detecting unnecessary operation as an abnormality of heated humidifier 30. When power-on (power ON) of heated humidifier 30 is detected based on processed signal Sg30 related to the heated humidifier generated by sensor signal processing unit 7, and when "operation of ventilator 20 detected" is not determined based on processed signal Sg20 related to the ventilator generated by sensor signal processing unit 7, that is, when power is not turned on (power OFF), operation status detection unit 8 determines that "abnormality of heated humidifier 30 detected: unnecessary operation" and outputs this as the detection result.

[0032] As mentioned above, the technology disclosed in the above document provides a measure to prevent the humidifier from being left on, but does not disclose a measure to prevent the ventilator from being turned off. In other words, if the humidifier continues to operate while the ventilator is not in operation, the humidifier will run dry. However, the configuration and operation of the device 10 of the present invention shown in Detection Example 4 can effectively prevent such unnecessary operation of the humidifier 30, which can cause dry-running. Note that the diagram only states "Abnormal: Unnecessary Operation," and omits any description of the "dry-running" that may result.

[0033] Detection example 5 in Figure 2 shows an algorithm for detecting dry-burn as an abnormality of heated humidifier 30. When a state in which heated humidifier 30 needs to be supplied with humidification water is detected from processed signal Sg30 related to the heated humidifier generated by sensor signal processing unit 7, operation status detection unit 8 determines that "abnormality detected in heated humidifier 30: dry-burn" and outputs this as the detection result.

[0034] The algorithm shown in Detection Example 4 above detects unnecessary operation that causes the heated humidifier 30 to run dry, i.e., detects an abnormal state in which the ventilator 20 is turned off and the heated humidifier 30 is turned on. On the other hand, the algorithm shown in Detection Example 5 outputs the actual dry-run state or a state in which there is a risk of dry-running as the detection result.

[0035] 3 is an explanatory diagram showing another example of the configuration of a heating humidifier operation state detection device for a ventilator of the present invention. As shown in the figure, this heating humidifier operation state detection device 310 can be configured so that a calculation processing unit 36 ​​is provided with an operation processing unit 3P that generates a display to be output to a display unit 39 based on detection by an operation state detection unit 38.

[0036] In the calculation processing unit 36 ​​of the heated humidifier operating state detection device 310 having such a configuration, the operation processing unit 3P generates a display to be output based on the operating state detection unit 38 detecting the operating state of the heated humidifier 30 or the ventilator 20 as illustrated in Figure 2, and the generated display is output to the display unit 39.

[0037] 3, the humidifier operating state detection device 310 can be configured to include at least one of a visual information display unit 39V that displays visual information and an auditory information display unit 39A that displays auditory information as its display unit 39. The figure shows a configuration including both display units 39A and 39V.

[0038] In this humidifier operation status detection device 310 configured as described above, visual information is displayed by visual information display unit 39V, and auditory information is displayed by auditory information display unit 39A. For such displays, the visual and auditory information displays are generated by operation processing unit 3P. It is preferable to have both auditory information display unit 39A and visual information display unit 39V, as shown in the figure. This is because using both information displays in combination provides redundancy as a warning in the event of an abnormality, compared to when only one of the information displays is used.

[0039] Figure 4 is a flow chart showing the basic configuration of the ventilator heated humidifier operational state monitoring program of the present invention. The description will be made with reference to Figure 1 and other figures. As shown in the figure, the ventilator heated humidifier operational state monitoring program PG4000 (heated humidifier operational state monitoring program PG4000) is a program that instructs a heated humidifier operational state detection device 10 or the like having any of the configurations already described to monitor the operational state of the heated humidifier 30, and is composed of the following determination and processing procedures that proceed sequentially after starting to monitor sensor signals from the ventilator current sensor 4 or the like.

[0040] First, the main components of the system are a respiratory action pattern confirmation procedure PC10 that determines whether the processed signal Sg20 related to the ventilator 20 is a current change pattern (breathing pattern) due to the respiratory action of the ventilator 20, a heated humidifier operation confirmation procedure PC20 that determines whether the processed signal Sg30 related to the heated humidifier 30 has been detected if the respiratory action pattern confirmation procedure PC10 determines that the same pattern has been detected ("Y" in the figure), and an alarm display procedure PC30 that displays an alarm message indicating that the power to the heated humidifier 30 has not been turned on on the display unit 9 or the like if the processed signal Sg30 has not been detected ("N" in the figure) in the heated humidifier operation confirmation procedure PC20.

[0041] The heated humidifier operation status monitoring program PG4000 configured as described above begins monitoring the sensor signal from the ventilator current sensor 4, i.e., after detecting the operation of the ventilator 20, indicated by "20 START" in the figure, and then performs specific processing and judgment. First, in the respiratory action pattern confirmation procedure PC10, it is determined whether the processed signal Sg20 related to the ventilator 20 is a current change pattern (breathing pattern) due to the respiratory action of the ventilator 20. If the processed signal Sg20 is a breathing pattern ("Y" in the figure), the program proceeds to the next heated humidifier operation confirmation procedure PC20. If it is not a breathing pattern ("N" in the figure), the heated humidifier operation status detection device 10 and the like are instructed to continue monitoring the sensor signal, and the device 10 and the like executes this command.

[0042] Next, in the heated humidifier operation confirmation procedure PC20, which is performed when the breathing pattern is confirmed, it is determined whether or not the processed signal Sg30 related to the heated humidifier 30 has been detected. If it has been detected ("Y" in the figure), the heated humidifier operation status detection device 10 etc. is instructed to continue monitoring the sensor signal, and the device 10 etc. executes this. If it has not been detected ("N" in the figure), the procedure proceeds to the alarm display procedure PC30.

[0043] If the detection of the processed signal Sg30 is not confirmed in the heated humidifier operation confirmation procedure PC20 ("N" in the figure), an instruction to display an alarm display indicating that the heated humidifier 30 is not powered on on the display unit 9 or the like ("ALART" in the figure) is given to the heated humidifier operation status detection device 10 or the like in the alarm display procedure PC30, and the device 10 or the like executes this instruction. In this way, the program PG4000 instructs the heated humidifier operation status detection device 10 or the like to monitor the operation status of the heated humidifier 30, i.e., the power-on status (ON / OFF).

[0044] Fig. 5 is a flow chart showing another example (part 1) of the configuration of the ventilator heated humidifier operation status monitoring program of the present invention. As shown in the figure, the heated humidifier operation status monitoring program PG5000 is a program that instructs the heated humidifier operation status detection device 10 and the like to monitor the operation status of the heated humidifier 30. In addition to the configuration (program PG4000) shown in Fig. 4, it is characterized by including a ventilator operation confirmation procedure PC40 that determines whether or not a processed signal Sg20 related to the ventilator 20 has been detected after the operation of the heated humidifier 30 and the like is detected, as indicated by "30 START" in the figure, and a second alarm display procedure PC50 that displays an alarm indicating that the power to the ventilator 20 is not on (power OFF) on the display unit 9 and the like.

[0045] In the heated humidifier operation status monitoring program PG5000 having such a configuration, in addition to the actions shown in Figure 4, after detecting the operation of the heated humidifier 30, etc., as indicated by "30 START" in the figure, a determination is made in the ventilator operation confirmation procedure PC40 as to whether or not the processed signal Sg20 related to the ventilator 20 has been detected, and if detection is confirmed ("Y" in the figure), the heated humidifier operation status detection device 10, etc. is instructed to continue monitoring the sensor signal, and the device 10, etc. executes this command.

[0046] In the ventilator operation confirmation procedure PC40, if the detection of the processed signal Sg20 relating to the ventilator 20 is not confirmed ("N" in the figure), the procedure proceeds to the second alarm display procedure PC50, in which a command is issued to the heating humidifier operation status detection device 10, etc. to display an alarm display indicating that the power to the ventilator 20 is not turned on (power OFF) on the display unit 9, etc., and the device 10, etc. displays such an alarm display ("ALART-2" in the figure).

[0047] Fig. 6 is a flow chart showing another example (part 2) of the ventilator heated humidifier operation status monitoring program of the present invention. As shown in the figure, this heated humidifier operation status monitoring program PG6000 is a program that instructs heated humidifier operation status detection device 10 and the like to monitor the operation status of heated humidifier 30. In addition to the configuration shown in Fig. 4 or 5 (programs PG4000 and PG5000), this program is characterized by including a water supply necessity confirmation procedure PC60 that, after detecting the operation of heated humidifier 30 and the like, determines whether humidification water supply is required based on processed signal Sg30 related to heated humidifier 30, as indicated by "30 START" in the figure, and a third alarm display procedure PC70 that, if a water supply requirement is confirmed in water supply necessity confirmation procedure PC60 ("Y" in the figure), displays an alarm indicating the consumption of humidification water by heated humidifier 30 on display unit 9 or the like.

[0048] In the heated humidifier operation status monitoring program PG6000 configured as described above, in addition to the actions shown in Figure 4 or Figure 5, after detecting the operation of the heated humidifier 30, etc., as indicated by "30 START" in the figure, the ventilator operation confirmation procedure PC60 determines whether or not the supply of humidification water is required based on the processed signal Sg30 related to the heated humidifier 30, and if the state does not indicate a need for water supply ("N" in the figure), the heated humidifier operation status detection device 10, etc. is instructed to continue monitoring the sensor signal, and the device 10, etc. executes this command.

[0049] If the water supply necessity confirmation procedure PC60 confirms that water supply is necessary ("Y" in the figure), the procedure proceeds to the third alarm display procedure PC70, and a command is issued to the heated humidifier operation status detection device 10, etc. to display an alarm display of the humidification water consumption of the heated humidifier 30 on the display unit 9, etc., and the device 10, etc. displays such an alarm display ("ALART-3" in the figure). [Example]

[0050] Examples of the present invention will be described below, but the present invention is not limited to these examples. Figure 7 is an explanatory diagram showing the configuration of an embodiment of a ventilator heated humidifier operation status detection device of the present invention. In the figure, this device is referred to as a "ventilator heated humidifier power supply status detector." As shown in the figure, this heated humidifier operation status detection device 71 detects the operation status of a heated humidifier 730 and includes a ventilator power supply unit 72, which is the power source for the ventilator 20; a heated humidifier power supply unit 73, which is the power source for the humidifier 730; a ventilator current sensor 74 for detecting the current of the ventilator 720; a humidifier current sensor 75 for detecting the current of the humidifier 730; an arithmetic processing unit 76 that processes the sensor signals from both current sensors 74 and 75; and a display unit 79 that displays the results of arithmetic processing by the arithmetic processing unit 76, including an auditory information display unit (speaker) 79A and a visual information display unit (warning operation display unit) 79V.

[0051] The calculation processing unit 76 includes a sensor signal processing unit 77 that converts the sensor signals from the current sensors 74 and 75 into voltages, an operation status detection unit (CPU) 78 that detects the operation status of the ventilator 720 and the heated humidifier 730 based on the signals processed by the sensor signal processing unit 77, and an operation display processing unit 7P that generates a display to be output to the display unit 79 based on the detection by the operation status detection unit 78.

[0052] It also includes a voice synthesis processing unit 7Q and a voice amplification unit 7R that synthesize the audio information to be output to the audio information display unit 79A based on the action of the operation state detection unit 78. On the other hand, the operation display processing unit 7P is responsible for generating visual information to be output to the visual information display unit (warning operation display unit) 79V.

[0053] The method of use and operation of the heating and humidifying device 710 are as follows: 1) to 12). 1) Insert the AC plug 721 of the ventilator 720 into the ventilator power supply unit (AC outlet for breathing) 72 of the device 710. Also, insert the AC plug 731 of the heated humidifier 730 into the heated humidifier power supply unit (AC outlet for heated humidifier) ​​73 of the device 710. 2) If the heated humidifier 730 is switched off, no current is detected. 3) The order in which the components are inserted in 1) above does not matter. 4) Insert the AC plug 71 of the device 710 into an AC outlet. 5) This supplies power to the device 710.

[0054] 6) As a result, the operating state detection unit (CPU) 78 starts a program, and starts monitoring the signals (voltages) from the current sensors 74 and 75. 7) As the ventilator 720 starts charging the battery, the ventilator current sensor 74 detects the current, which is converted into a voltage by the sensor signal processor 77. The CPU 78 analyzes the operating state of the ventilator 720 based on the current waveform.

[0055] 8) If it is determined as a result of the analysis by the CPU 78 that the ventilator 720 has started ventilation, monitoring of the heater / humidifier current sensor 75 of the heater / humidifier 730 begins. 9) At this time, if the heated humidifier current sensor 75 cannot detect the current of the heated humidifier 730, an alarm is issued by the display unit 79. The alarm is issued by a light (lamp), an alarm sound, or a voice message to indicate that the heated humidifier is OFF.

[0056] 10) When the power supply to the heated humidifier 730 is turned on, the heated humidifier current sensor 75 detects a current, which is converted to a voltage by the sensor signal processing unit 77, and the CPU 78 detects that the heated humidifier 730 has started operating.

[0057] 11) At this time, if the ventilator current sensor 74 of the ventilator 720 cannot detect the current of the ventilator 720, the display unit 79 issues an alarm indicating that the heated humidifier 730 is in an empty-fire state. The alarm indicates that the heated humidifier is in an OFF state by means of a light (lamp), an alarm sound, and a voice message.

[0058] 12) If neither of the current sensors 74, 75 detects a current, no alarm action is taken.

[0059] In this way, this ventilator heated humidifier operating state detection device 710 reads the power (AC 100V) of the ventilator 720 and heated humidifier 730 when they are operating using current sensors 74 and 75, analyzes the state of the ventilator 720 and heated humidifier 730 (operating state, standby state, ventilation state), and can alert nearby medical personnel with light and sound (electronic sound, synthesized voice, etc.) depending on the combination of each state. [Industrial Applicability]

[0060] The ventilator heated humidifier operation status detection device and ventilator heated humidifier operation status monitoring program of the present invention have many advantages, such as the fact that when a ventilator and a humidifier are used simultaneously, the power status of the humidifier is detected only after the ventilator begins ventilation, and power status detection is not performed during idling, preventing unnecessary alarms from being issued. Therefore, this invention has great industrial applicability in the fields of medical device manufacturing and use, and all related fields. [Explanation of symbols]

[0061] 2, 32, 72...Respirator power supply section 3, 33, 73…Heating humidifier power supply for ventilator 3P, 7P...Operation processing section (operation display processing section) 4, 34, 74... Current sensors for ventilators 5, 35, 75... Current sensor for ventilator heated humidifier 6, 36, 76...Processing unit 7, 37, 77...Sensor signal processing section 8, 38, 78...Operation status detection unit (CPU) 9, 39, 79...Display section 10, 310, 710...Heater and humidifier operating status detection device for artificial respirator 20, 720…Respirator 30, 730…Heating humidifier for ventilators 39A, 79A...Auditory information display unit (speaker) 39V, 79V...Visual information display (warning operation display) 71...AC plug 721...AC plug (ventilator) 731...AC plug (heated humidifier for ventilators) 7C…AC-DC power supply circuit 7Q...Speech synthesis processing unit 7R...Audio amplifier PC10: Breathing pattern confirmation procedure PC20…Heated humidifier operation check procedure PC30...Alarm display procedure PC40…Ventilator operation confirmation procedure PC50...Second alarm display procedure PC60...Water supply necessity confirmation procedure PC70...Third alarm display procedure PC70 PG4000, PG5000, PG6000... Ventilator Heated Humidifier Operation Status Monitoring Program Sg20: Processed signals related to ventilators Sg30...Processed signal related to heated humidifier for ventilator

Claims

1. A device for detecting the operating state of a heated humidifier for a ventilator, The ventilator power supply unit, which is the power source for the ventilator, a power supply for the ventilator heating and humidifier; a current sensor for detecting a current of the ventilator; a current sensor for a heated humidifier for a ventilator for detecting a current of the heated humidifier for a ventilator; a processing unit that processes the sensor signals from both current sensors; and a display unit that displays the results of the calculation processing by the calculation processing unit. A device for detecting the operating state of a heated humidifier for an artificial respirator, comprising:

2. The arithmetic processing unit a sensor signal processing unit that converts a sensor signal from the current sensor into a voltage; and an operating state detection unit that detects the operating states of the ventilator and the humidifier for the ventilator based on the signal processed by the sensor signal processing unit.

2. The device for detecting the operating state of a heated humidifier for an artificial respirator according to claim 1, comprising:

3. The operating state detection unit 3. The device for detecting the operating state of a humidifier for a ventilator according to claim 2, wherein the device determines that the ventilator is operating when the processed signal related to the ventilator shows a current change pattern due to the breathing action of the ventilator.

4. The operating state detection unit 3. The device for detecting the operation state of a heated humidifier for a ventilator according to claim 2, wherein when power-on is detected by the processed signal related to the heated humidifier for a ventilator, it is determined that the heated humidifier for a ventilator is in operation.

5. The operating state detection unit Ventilator activation detection has been determined, and When power-on is not detected by the processed signal related to the ventilator heated humidifier, 4. The operating state detection device for a humidifier for an artificial respirator according to claim 3, wherein the device judges whether an abnormality has been detected in the humidifier for an artificial respirator.

6. The operating state detection unit A power-on of a ventilator heated humidifier is detected by the processed signal; and If ventilator operation detection is not determined, 4. The device for detecting the operating state of a humidifier for an artificial respirator according to claim 3, wherein unnecessary operation of the humidifier for an artificial respirator is detected.

7. The operating state detection unit 3. The operating state detection device for a heated humidifier for a ventilator according to claim 2, characterized in that when the processed signal related to the heated humidifier for a ventilator indicates that a water supply for humidification water is required, it determines that an abnormality has been detected in the heated humidifier for a ventilator.

8. The arithmetic processing unit 8. The operating state detection device for a heated humidifier for a ventilator according to claim 2, further comprising an operation processing unit that generates a display to be output to the display unit based on detection by the operating state detection unit.

9. 8. The device for detecting the operating state of a heated humidifier for a ventilator according to claim 1, 2, 3, 4, 5, 6, or 7, characterized in that the display unit is provided with at least one of a visual information display unit that displays visual information and an auditory information display unit that displays auditory information.

10. 9. The device for detecting the operating state of a heated humidifier for a ventilator according to claim 8, characterized in that the display unit is provided with at least one of a visual information display unit that displays visual information and an auditory information display unit that displays auditory information.

11. 5. A program for instructing the operation state detection device for a ventilator heating humidifier according to claim 2, 3 or 4 to monitor the operation state of the ventilator heating humidifier, After starting to monitor the sensor signal from the ventilator current sensor, a respiratory activity pattern confirmation step of determining whether the processed ventilator signal corresponds to a current change pattern due to ventilator respiratory activity; a heating and humidifier operation confirmation step of determining whether the processed signal related to the ventilator heating and humidifier has been detected when the respiratory movement pattern confirmation step determines that the same pattern has been detected; and a warning display step of displaying a warning display indicating that the ventilator heating and humidifying device is not powered on on the display unit when the detection of the processed signal is not confirmed in the heating and humidifying device operation confirmation step. A program for monitoring the operating status of a heated humidifier for a ventilator, comprising:

12. After starting to monitor the sensor signal from the current sensor for the ventilator heated humidifier, a ventilator operation confirmation procedure for determining whether the processed signal associated with the ventilator is detected; and a second alarm display step of displaying an alarm indicating that the power supply to the ventilator is not turned on on the display unit if detection of the processed signal is not confirmed in the ventilator operation confirmation step.

13. After starting to monitor the sensor signal from the current sensor for the ventilator heated humidifier, a water supply necessity confirmation step for determining whether or not a water supply for humidification is necessary based on the processed signal related to the ventilator heated humidifier; and a third alarm display step of displaying an alarm indicating the consumption of water for humidification in the ventilator heated humidifier on the display unit when the water supply necessity state is confirmed in the water supply necessity confirmation step.

Images