Oxygen supply device

Abstract

To provide a gas supply abnormality detection system provided with a function for detecting a fire in an oxygen concentrator or the like, issuing an alarm and interrupting oxygen supply, and an oxygen supply device mounted with the same.SOLUTION: An oxygen supply device comprising: an oxygen supply main body portion that supplies oxygen; a cannula that supplies oxygen to a user; a flow rate detection portion that is provided in the cannula; and a control portion that performs stop control for stopping supply of oxygen to the user or alarm control for a person concerned based on a detection result of the flow rate detection portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention provides an oxygen supply device monitoring system having a function of cutting off the oxygen supply when an abnormality in the supply of oxygen gas supplied from an oxygen cylinder or oxygen concentrator is detected, or an oxygen supply device equipped with the same. [Background technology]

[0002] Although oxygen is not flammable, it does have the ability to promote the spread of fire to surrounding objects, so care must be taken when handling it to prevent fires. When using medical oxygen gas for oxygen inhalation therapy, the use of open flames within 2 meters is strictly prohibited, but there have been occasional cases where patients who smoke without following their doctor's instructions have caused fires and suffered serious burns.

[0003] To minimize such fire accidents, Japanese Patent Publication No. 2015-524697 (Patent Document 1) discloses a flameproof coupling used when supplying combustion-supporting medical gases, which melts at a predetermined temperature to move the valve assembly to a closed position and block the flow path. Japanese Patent Publication No. 2009-183544 (Patent Document 2) also discloses a device that has a temperature detection sensor near the nasal prongs of a cannula, and if ignition of the cannula is detected, cuts off the oxygen supply to prevent the fire from spreading. Japanese Patent Publication No. 2017-086731 (Patent Document 3) discloses a device that has a light-receiving element on the extension of the oxygen supply flow path of an oxygen concentrator, which detects flames occurring on the oxygen dispenser side and prevents the fire from spreading. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2015-524697 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-183544 [Patent Document 3] Japanese Patent Application Publication No. 2017-086731 Summary of the Invention [Problem to be solved by the invention]

[0005] Fires caused by smoking while inhaling oxygen often occur near the prongs at the tip of the nasal cannula, which is the oxygen release part. In the device of Patent Document 2, the temperature sensor installed near the nasal prongs may burn out at the same time as the fire, which may make it impossible to reliably detect ignition.

[0006] When the flame-retardant coupling described in Patent Document 1 is used, if the cannula downstream of the coupling catches fire, the fire will spread upstream along the flow of oxygen gas, which is the oxygen supply source, and will spread to the coupling. However, the oxygen supply is cut off by a valve shut-off mechanism within the coupling, and the fire can be stopped midway up the cannula.

[0007] On the other hand, if the cannula upstream of the coupling, i.e., between the oxygen concentrator and the coupling, catches fire due to a stove fire or other source, the oxygen supply cannot be stopped and the fire will spread from the cannula to the oxygen outlet of the oxygen concentrator.

[0008] In the oxygen concentrator described in Patent Document 3, the supply of oxygen from the oxygen concentrator can be cut off by detecting a flame using a light-receiving element installed near the oxygen outlet. However, in order to detect the flame, the flame must be in a straight line in the direction of the light-receiving element. If a curved, soft cannula is used, the fire will spread right up to the oxygen concentrator. [Means for solving the problem]

[0009] As described below, the present invention provides an oxygen supply device that detects fires in oxygen concentrators and the like, issues an alarm, and has the function of cutting off the oxygen supply, and an oxygen supply device monitoring system that has the function of detecting abnormalities in the gas supply, including fires. 1) An oxygen supply device comprising an oxygen supply main body that supplies oxygen, a cannula that supplies oxygen to a user, a flow rate detection unit provided in the cannula, and a control unit that performs stop control to stop the supply of oxygen to the user or issue an alarm to relevant parties based on the detection result by the flow rate detection unit. 2) The oxygen supply device described in 1) above, characterized in that the cannula is provided with a communication module, and when the detection result by the flow rate detection unit satisfies a predetermined condition, the control unit transmits a stop command signal to the oxygen supply main unit via the communication module, instructing the oxygen supply main unit to stop supplying oxygen. 3) The oxygen supply device described in 1) above, wherein the cannula is provided with an electromagnetic valve, and when the detection result by the flow rate detection unit satisfies a predetermined condition, the control unit controls the electromagnetic valve to cut off the oxygen supply. 4) The oxygen supply device described in 3) above, characterized in that the cannula is provided with a communication module, and when the control unit controls the solenoid valve to be shut off, the stop command signal is transmitted to the oxygen supply main body. 5) The oxygen supply device described in 3) above, in which the cannula is provided with a plurality of electromagnetic valves, each of which has a corresponding control unit and a communication module, and when one of the control units controls the corresponding electromagnetic valve to be shut off, a stop command signal is sent via the communication module to the other control unit to shut off the corresponding electromagnetic valve. 6) The oxygen supply device described in 1) above, wherein the control unit outputs alarm information according to the detection result when the detection result by the flow detection unit is lower than the minimum supply flow rate value that should be supplied to the patient. 7) The oxygen supply device described in 1) above, wherein the cannula is provided with a temperature detection unit, and the control unit performs the stop control or the alarm control based on the detection results by the flow rate detection unit and / or the temperature detection unit. 8) The oxygen supply device according to 1) above, which is a device that supplies oxygen from the cannula to an artificial respiration device. 9) The oxygen supply device according to 1), which is a device for supplying oxygen from the cannula to an interface of a patient using an artificial respiration device. 10) The oxygen supply device according to 8) or 9), wherein the artificial respiration device is a non-invasive positive pressure artificial respiration device or a positive pressure respiratory support ventilation device. 11) A shutoff control unit provided in the middle of a supply path that supplies oxygen from an oxygen supply main body to a user, the shutoff control unit comprising an electromagnetic valve, a flow rate detection unit, and a control unit that shuts off the electromagnetic valve when the detection result by the flow rate detection unit satisfies a predetermined condition. 12) A shutoff control unit provided in the middle of a supply path for supplying oxygen from an oxygen supply main body to a user, the shutoff control unit comprising: an electromagnetic valve; a flow rate detection unit; and a communication unit that, when the detection result by the flow rate detection unit satisfies a predetermined condition, wirelessly transmits a stop command signal to the oxygen supply main body to stop the supply of oxygen from the oxygen supply main body. 13) A cannula for supplying oxygen from an oxygen supply main body to a user, and an oxygen supply cannula comprising the shutoff control unit described in 11) or 12). 14) An oxygen supply device monitoring system comprising an oxygen supply device according to any one of 1) to 10), a monitoring server or a related party terminal that monitors the operating status of the oxygen supply device, and when the control unit of the oxygen supply device executes oxygen supply stop control or alarm control, sends a notification to the monitoring server or the related party terminal. 15) Equipped with a monitoring server that monitors the operating status of the oxygen supply device, The oxygen supply device includes an oxygen supply main body that supplies oxygen, a cannula that supplies oxygen to a user, a flow rate detection unit provided in the cannula, a transmission unit that transmits a detection result by the flow rate detection unit to the monitoring server, and a reception unit that receives a signal from the monitoring server, An oxygen supply device monitoring system that transmits a signal to the oxygen supply device to stop the supply of oxygen to the user or to issue an alarm to relevant parties based on the detection result received from the transmitting unit. 16) An oxygen supply system comprising an oxygen supply device and an artificial respiration device that supplies oxygen from the oxygen supply device via a cannula, characterized in that the artificial respiration device is provided with a flow rate detection unit that measures the oxygen flow rate, and a control unit that performs stop control to stop the supply of oxygen from the oxygen supply device or issue an alarm to relevant personnel when the detection result by the flow rate detection unit satisfies a predetermined condition. 17) The oxygen supply device described in 16) above, wherein the artificial respiration device is provided with a temperature detection unit, and the control unit performs the stop control or the alarm control based on the detection results by the flow rate detection unit and / or the temperature detection unit. 18) The oxygen supplying device according to 16) or 17) above, characterized in that the oxygen supplying device and the artificial respiration device are provided with a communication module, and when the detection results of the flow rate detection unit and / or the temperature detection unit satisfy predetermined conditions, the control unit transmits a stop command signal to the oxygen supplying device via the communication module, instructing the oxygen supplying device to stop supplying oxygen. [Effects of the Invention]

[0010] In the oxygen supply device of the present invention, by detecting the flow rate of oxygen supplied from the oxygen supply main body midway through the cannula, an abnormality in the oxygen supply due to a fire occurring upstream in the oxygen supply path can be detected, and the device can be stopped, the flow path can be blocked, an alarm can be issued, etc., thereby preventing the spread of a fire associated with the oxygen supply. Furthermore, by further providing a temperature sensor, the temperature sensor can detect a fire occurring downstream in the oxygen path, and similarly prevent the spread of the fire. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram of an oxygen supply device according to the present invention. [Figure 2] FIG. 2 is a configuration diagram of a cutoff control unit according to an embodiment of the present invention. [Figure 3] FIG. 10 is a configuration diagram of a cutoff control unit according to another embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram of another embodiment of the oxygen supply device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The oxygen supply device used in the present invention can use various oxygen sources, such as an oxygen cylinder, an oxygen concentrator that separates oxygen from the air and supplies concentrated oxygen, or liquid oxygen. In particular, pressure swing adsorption type oxygen concentrators, which adsorb nitrogen from the air and separate and supply unadsorbed oxygen, do not require periodic cylinder replacement or liquid oxygen replenishment, unlike oxygen cylinders or liquid oxygen, and can be used with household commercial power sources. Therefore, they are widely used as oxygen sources for oxygen inhalation therapy, a treatment for patients with respiratory diseases.

[0013] A patient connects a cannula to the oxygen supply port of the oxygen supply main unit of such an oxygen supply device, directing oxygen into the user's nasal cavity and inhaling oxygen in time with breathing. Such a cannula is a hollow, flexible tube that supplies oxygen gas to the user. This includes nasal cannulas used in oxygen inhalation therapy, which supply oxygen to the patient's nostrils through prongs attached to the cannula tip as an interface with the user, and oxygen masks with a mask attached to the cannula tip used for absorbing high-flow oxygen. It also includes connection cannulas that connect to artificial ventilators, such as continuous positive airway pressure (CPAP) devices and servo-controlled pressure-sensing ventilators (ASV) used in positive-assist ventilation therapy, which is used to treat sleep apnea syndrome, and noninvasive positive pressure ventilation (NIPPV) devices used in noninvasive positive pressure ventilation therapy, which is used to treat chronic respiratory diseases, to supply oxygen to the patient, or connection cannulas used to supply oxygen directly to the mask that serves as the patient's interface with the artificial ventilator. It also includes extension cannulas that connect to such cannulas and are used in locations away from the oxygen supply main unit.

[0014] The oxygen supply device of the present invention includes a cutoff control unit equipped with a flow rate sensor located midway through the cannula and a control unit that performs control to stop the supply of oxygen to the user or issue an alarm to relevant personnel based on the detection results of the flow rate sensor. The cutoff control unit includes a flow rate sensor that detects the flow rate of oxygen supplied from the oxygen supply main body to the user via the cannula, a control unit with a CPU and memory that controls the flow rate sensor, a communication module that transmits abnormality information, and a power source for operating these components. The communication module can use wired communication as well as infrared communication and various wireless communication methods such as Bluetooth, Wi-Fi, and Thread / ZigBee. The cutoff control unit can be powered by a battery or, depending on the situation, by a regular commercial power source. An alarm unit, such as an LED lamp, can be provided to alert users when the remaining battery level is below a predetermined level.

[0015] If a fire were to ignite in the cannula connecting the oxygen supply main unit and the shutoff control unit, the flames would spread upstream to the oxygen supply main unit, which is where the oxygen is being supplied. Normally, a stop coil valve such as "FireSafe II" is installed as a flameproof coupling to prevent the fire from spreading further upstream.

[0016] In the oxygen supply device of the present invention, a flow sensor can detect changes in flow rate due to a fire occurring upstream of the shut-off control unit, and by notifying the oxygen supply main body of the abnormality via a wireless communication module such as Bluetooth, the oxygen supply can be immediately stopped, preventing the fire from spreading.

[0017] If a fire occurs downstream of the shutoff control unit, between the nasal prongs that supply oxygen to the patient's nostrils, the flames will spread toward the shutoff control unit, but the flow rate sensor cannot detect the abnormality because there is no change in the oxygen supply flow rate.In the device of the present invention, the shutoff control unit is further equipped with a temperature sensor to detect temperature changes associated with the spread of fire and communicate this to the oxygen supply main unit to stop the oxygen supply.

[0018] By providing an electromagnetic valve in the shutoff control unit of the oxygen supply device of the present invention, if an abnormality is detected by the temperature sensor, the electromagnetic valve can be controlled to close, stopping the supply of oxygen downstream and preventing the spread of fire.

[0019] When oxygen supplied from an oxygen supply device is connected to an artificial respirator such as a CPAP device, ASV device, or NIPPV device to perform oxygen supplementation while performing positive pressure assisted ventilation or noninvasive positive pressure ventilation, the cutoff control unit of the present invention can be built into the artificial respirator rather than the cannula that connects the two. This makes it possible to minimize the spread of fire that may occur in the cannula.

[0020] An oxygen supply system including a respirator with improved safety can be provided by providing a flow rate detection unit on the oxygen supply port side of the respirator that measures the oxygen flow rate or a temperature detection unit that detects the temperature of the oxygen being supplied, and when the detection results from the flow rate detection unit or temperature detection unit satisfy predetermined conditions, performing stop control to stop the supply of oxygen from the oxygen supply device or issuing an alarm to relevant personnel.

[0021] By using a communication module provided in the oxygen supply device and the artificial respiration device, when the detection results by the flow rate detection unit and / or the temperature detection unit satisfy predetermined conditions, a stop command signal instructing the oxygen supply device to stop supplying oxygen can be sent to the oxygen supply device via the communication module.

[0022] To further enhance safety, an electromagnetic valve is installed at the oxygen supply port of the ventilator, and in addition to stopping the oxygen supply by shutting down the upstream oxygen supply device, it is also possible to prevent the spread of fire to the ventilator, even though it is downstream, by blocking the oxygen supply port of the ventilator.

[0023] The oxygen supply device of the present invention will be described in more detail with reference to the drawings. Figure 1 is a schematic diagram of an oxygen concentrator used as an oxygen supply source. The oxygen concentrator, which is the oxygen supply main body 1, is a pressure swing adsorption type oxygen concentrator that adsorbs nitrogen in the air under pressurized conditions and extracts unadsorbed oxygen. Using an adsorbent such as Li zeolite, air pressurized by a compressor is supplied to an adsorption tube filled with the adsorbent. An adsorption process, in which nitrogen is adsorbed under pressurized conditions and unadsorbed oxygen is extracted, and a desorption / regeneration process, in which the adsorbed nitrogen is desorbed under reduced pressure and the adsorbent is regenerated, are repeated to continuously generate and supply oxygen-enriched gas.

[0024] The oxygen-enriched gas supplied from the oxygen supply main body 1 is supplied to the user, a patient with respiratory disease, via a soft, hollow cannula 3 made of, for example, vinyl chloride. A cutoff control unit 2 equipped with a flow rate sensor 4 is provided midway through the cannula 3.

[0025] 2 shows a first embodiment of the shutoff control unit 2 used in the oxygen supply device of the present invention. The shutoff control unit 2 is installed midway through the cannula 3 and is equipped with a flow sensor 4 that detects the flow rate of oxygen gas flowing through the cannula. Various types of sensors can be used for the flow sensor 4, including mass flow sensors such as thermal and Coriolis types, and volume flow sensors such as electromagnetic, ultrasonic, and differential pressure types.

[0026] If a fire or other problem occurs upstream of the flow sensor 4 and the flow sensor 4 detects an abnormal flow rate, the CPU, which is the control unit 7, will send an abnormality report to the oxygen concentrator, which is the oxygen supply main body 1, via a communication module 8 such as a Bluetooth module, and can shut off the oxygen supply by either urgently stopping the oxygen concentrator or controlling the flow control valve installed in the device.

[0027] In this embodiment, a temperature sensor 5 is further provided. The temperature sensor 5 can detect the temperature of the oxygen gas flowing through the cannula 3. It can detect a temperature change in the oxygen gas caused by a fire occurring upstream of the temperature sensor 5, a temperature change caused by a fire occurring downstream of the temperature sensor 5, or a temperature change caused by the spread of the flames to the upstream side.

[0028] 3 shows a second embodiment of the cutoff control unit 2 used in the oxygen supply device of the present invention. As in the first embodiment, the cutoff control unit 2 is installed midway through the cannula 3 and includes a flow sensor 4 that detects the flow rate of oxygen gas flowing through the cannula 3, a temperature sensor 5, and a solenoid valve 6 that cuts off the supply of oxygen gas. If a fire or other incident occurs upstream of the flow sensor 4 and the flow sensor 4 detects an abnormal flow rate, the control unit 7 shuts off the solenoid valve 6 to prevent the fire from spreading downstream to the patient side, and also sends an abnormality notification to the oxygen concentrator, which is the oxygen supply main unit 1, via a communication module 8 such as a Bluetooth module, and can shut off the oxygen supply by emergency stopping the oxygen concentrator or controlling the flow control valve provided in the device.

[0029] In addition, if a temperature sensor detects a fire and detects a temperature change due to a fire that has started downstream of the shut-off control unit 2 spreading upstream, the CPU, which is the control unit 7, will shut off the solenoid valve 6 and stop the oxygen supply, thereby preventing the fire from spreading to the oxygen concentrator.

[0030] Furthermore, the shutoff control unit is equipped with a communication module 8 such as Bluetooth, and when the CPU controls the shutoff of the solenoid valve 6, it can send a stop command signal to the oxygen concentrator, and it is also possible to shut off the oxygen supply itself from the oxygen concentrator.

[0031] Figure 4 shows an example of an oxygen supply device equipped with multiple shutoff control units for the cannula. Each shutoff control unit is equipped with a solenoid valve 6 and a wireless communication module 8, such as Bluetooth. When one shutoff control unit 2 controls the shutoff of the solenoid valve 6, the control unit 7 sends a stop command signal via the communication module 8 to the other shutoff control units 2' to shut off their solenoid valves 6'. The other shutoff control units that received the stop command signal shut off their solenoid valves 6', thereby stopping the oxygen supply between the cannulas. At the same time, a stop command signal can be sent to the oxygen concentrator, which is the main oxygen supply unit, to stop the oxygen concentrator and stop the oxygen supply, thereby preventing the spread of fire in the cannulas and further improving safety.

[0032] The oxygen supply unit that works with the cutoff control unit must be paired in advance to enable communication between the Bluetooth modules. The cutoff control unit does not require any special operational control while oxygen is being supplied normally, and it periodically checks the oxygen gas flow rate using the flow rate sensor 4 and the temperature using the temperature sensor 5.

[0033] If the flow sensor 4 detects a flow rate below a preset level, it closes the solenoid valve 6 of the shutoff control unit and requests the oxygen concentrator to shut down the device, shut off the oxygen supply, or issue an alarm. The detection threshold of the flow sensor 4 can be set to a value below the minimum supply flow rate supplied by the oxygen concentrator. Furthermore, if a significant drop in flow rate, for example, below 50% of the set flow rate, is detected during regular checks, the CPU will determine an abnormality and perform stoppage control or alarm control according to the detection result.

[0034] The same applies to the temperature sensor 5; if it detects a temperature higher than a preset value, for example, 100°C or higher, the CPU closes the solenoid valve of the shutoff control unit, requests the oxygen concentrator to shut down the device or shut off the oxygen supply, or requests that an alarm be issued.

[0035] The shutoff control unit with a flow sensor used in the oxygen supply device of the present invention can be applied not only to detecting a decrease in flow rate due to a fire, but also to detecting abnormalities associated with flow rate fluctuations, such as a broken or detached cannula, and by being equipped with an alarm function, abnormality detection becomes possible.

[0036] Furthermore, by providing the oxygen supply device with a transmitter and a receiver, when stop control or warning control is executed, detection result information and the like can be sent to a monitoring server via a communication line such as the Internet for management, and abnormality occurrence information can be shared by sending the information to a related party terminal such as a mobile terminal pre-registered in the oxygen supply device monitoring system. Therefore, the oxygen supply device can be used as an oxygen supply device monitoring system with a remote monitoring function that includes an oxygen supply device, a monitoring server that monitors the operating status of the oxygen supply device, and a related party terminal, and that sends a signal to the monitoring server or related party terminal when the control unit of the oxygen supply device executes stop control or warning control of the oxygen supply, and further as an oxygen supply monitoring system with a remote control function that sends a signal from the monitoring server to the oxygen supply device main body to stop the supply of oxygen to the user or to issue a warning to the related party. [Industrial Applicability]

[0037] The oxygen supply device of the present invention can be used as a treatment device for oxygen inhalation therapy, in which oxygen gas is administered to a patient with a respiratory disease from an oxygen supply source such as an oxygen concentrator or an oxygen cylinder. [Explanation of symbols]

[0038] 1 Oxygen supply main unit 2, 2' shutoff control unit 3 Cannula 4 Flow Sensor 5 Temperature Sensor 6. Solenoid valve 7 Control Unit 8 Communication module (Bluetooth module) 9 batteries

Claims

1. An oxygen supply device comprising: an oxygen supply main body that supplies oxygen; a cannula that supplies oxygen to a user; a flow rate detection unit provided in the cannula; and a control unit that performs stop control to stop the supply of oxygen to the user or issue an alarm to relevant personnel based on the detection result by the flow rate detection unit.

2. 2. The oxygen supply device according to claim 1, further comprising a communication module in the cannula, wherein when the detection result by the flow rate detection unit satisfies a predetermined condition, the control unit transmits a stop command signal to the oxygen supply main unit via the communication module, instructing the oxygen supply main unit to stop supplying oxygen.

3. 2. The oxygen supply device according to claim 1, wherein the cannula is provided with an electromagnetic valve, and when the detection result by the flow rate detection unit satisfies a predetermined condition, the control unit controls the electromagnetic valve to cut off the oxygen supply.

4. 4. The oxygen supply device according to claim 3, further comprising a communication module in the cannula, wherein the communication module transmits the stop command signal to the oxygen supply main body when the control unit controls the solenoid valve to shut off.

5. 4. The oxygen supply device according to claim 3, wherein the cannula is provided with a plurality of electromagnetic valves, each of which has a corresponding control unit and a communication module, and when one of the control units controls a corresponding electromagnetic valve to be shut off, the control unit transmits a stop command signal via the communication module to the other control unit to shut off the corresponding electromagnetic valve.

6. 2. The oxygen supply device according to claim 1, wherein the control unit outputs warning information according to a detection result when the detection result by the flow rate detection unit is lower than a minimum supply flow rate value that should be supplied to the patient.

7. 2. The oxygen supply device according to claim 1, further comprising a temperature detection unit in the cannula, and wherein the control unit performs the stop control or the warning control based on a detection result from the flow rate detection unit and / or the temperature detection unit.

8. 2. The oxygen supply device according to claim 1, which supplies oxygen from the cannula to an artificial respiration device.

9. 10. The oxygen supply device of claim 1, which supplies oxygen from the cannula to an interface for a patient using an artificial respiration device.

10. 10. The oxygen supply device according to claim 8 or 9, wherein the artificial respiration device is a non-invasive positive pressure artificial respiration device or a positive pressure respiratory assist ventilation device.

11. A shutoff control unit is provided in the middle of a supply path that supplies oxygen from an oxygen supply main body to a user, and includes a solenoid valve, a flow rate detection unit, and a control unit that shuts off the solenoid valve when the detection result by the flow rate detection unit satisfies a predetermined condition.

12. A cutoff control unit is provided in the middle of a supply path that supplies oxygen from an oxygen supply main body to a user, and includes an electromagnetic valve, a flow rate detection unit, and a communication unit that, when the detection result by the flow rate detection unit satisfies a predetermined condition, wirelessly transmits a stop command signal to the oxygen supply main body to stop the oxygen supply from the oxygen supply main body.

13. 13. An oxygen delivery cannula for delivering oxygen to a user from an oxygen delivery main body, the oxygen delivery cannula comprising: a shutoff control unit according to claim 11 or 12.

14. An oxygen supply device monitoring system comprising the oxygen supply device according to any one of claims 1 to 10, a monitoring server or a related party terminal that monitors the operating status of the oxygen supply device, and when a control unit of the oxygen supply device executes oxygen supply stop control or alarm control, transmits a notification to that effect to the monitoring server or the related party terminal.

15. a monitoring server that monitors the operating state of the oxygen supply device; The oxygen supply device includes an oxygen supply main body that supplies oxygen, a cannula that supplies oxygen to a user, a flow rate detection unit provided in the cannula, a transmission unit that transmits a detection result by the flow rate detection unit to the monitoring server, and a reception unit that receives a signal from the monitoring server, An oxygen supply device monitoring system that transmits a signal to the oxygen supply device to stop the supply of oxygen to the user or to issue an alarm to relevant parties based on the detection result received from the transmitting unit.

16. An oxygen supply system comprising an oxygen supply device and an artificial respiration device that supplies oxygen from the oxygen supply device via a cannula, wherein the artificial respiration device is provided with a flow rate detection unit that measures the oxygen flow rate, and a control unit that performs stop control to stop the supply of oxygen from the oxygen supply device or issues an alarm to relevant personnel when the detection result by the flow rate detection unit satisfies a predetermined condition.

17. 17. The oxygen supply device according to claim 16, further comprising a temperature detection unit in the artificial respiration device, and wherein the control unit performs the stop control or the warning control based on a detection result by the flow rate detection unit and / or the temperature detection unit.

18. 18. The oxygen supplying device according to claim 16 or 17, characterized in that the oxygen supplying device and the artificial respiration device are provided with communication modules, and when the detection results of the flow rate detection unit and / or the temperature detection unit satisfy a predetermined condition, the control unit transmits a stop command signal to the oxygen supplying device via the communication module, instructing the oxygen supplying device to stop supplying oxygen.

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