JP3145485U - Medical oxygen supply device - Google Patents

Abstract

The present invention provides a medical oxygen supply apparatus in which there is a fear of ignition due to an accident or the like, and an apparatus provided with means for suppressing the spread of fire and preventing fire.
SOLUTION: A means for obtaining high-concentration oxygen, an alarm means for notifying an abnormality by sound when an abnormality occurs, a control means for controlling these, a temperature sensor provided at an appropriate place, and a temperature detected by the temperature sensor being predetermined. When the value exceeds the value, the supply of the high-concentration oxygen is stopped and voice guidance is performed.
[Selection] Figure 1

Description

  The present invention relates to a medical oxygen supply apparatus in which there is a risk of ignition due to an accident or the like, and relates to a medical oxygen supply apparatus provided with fire spread suppression and fire prevention means.

  Traditionally used for oxygen inhalation therapy, which is effective as a treatment for patients with respiratory diseases such as asthma, emphysema, and chronic bronchitis. Medical oxygen supply devices permeate oxygen in the air and selectively adsorb nitrogen. An adsorption method using zeolite as an adsorbent is widely used.

In addition, since this type of medical oxygen supply device is usually used by a home patient in the home, pressure abnormalities or generated are generated in order to ensure the safety of operation of the medical oxygen supply device. There is also a system that detects equipment abnormalities such as oxygen concentration abnormality and equipment temperature abnormality.

  However, since oxygen has an auxiliary property, when using a medical oxygen supply device, the surrounding fire is strictly prohibited, but the user (patient) or the user's family or caregiver in the vicinity of the device Smoking when using this device, or using a device near a fire such as a stove, ignited an extension tube to which a nasal cannula or mouth mask is connected, resulting in a fire accident.

As a means to prevent fire due to ignition, the medical oxygen supply device is equipped with a smoke detection function to issue a warning against smoking around the device (Patent Document 1), and with a flame retardant fiber around the soft tube The use of coated conduit means (Patent Document 2) and the connection between the concentrated oxygen outlet and the conduit are composed of a conduit joint made of a non-combustible material (Patent Document 3) have been proposed.
JP 2001-314507 A Patent No. 2598126 JP 2006-280470 A

  In oxygen inhalation therapy for patients with respiratory diseases, there is a possibility of ignition of oxygen inhalation openings such as nasal cannula and mouth mask due to smoking, and use of a device near the presence of fire such as a stove. Exists and there is a risk of fire.

  The present invention solves the above-mentioned problem, and the user (patient) who is performing oxygen inhalation therapy or the user's family or caregiver smokes near the medical oxygen supply device, or at a short distance If there is a fire such as a stove in the main body, the temperature sensor provided in the main unit detects an abnormal temperature rise to stop the operation of the compressor that sends the air and the supply of the generated concentrated oxygen, and further the voice guide An object of the present invention is to provide a medical oxygen supply device having a function of prompting attention.

  In order to solve the above problems and achieve the object, according to the present invention, a medical device provided with means for obtaining high-concentration oxygen, alarm means for notifying abnormality by voice when an abnormality occurs, and control means for controlling them A temperature sensor is provided at an appropriate position of the main body of the oxygen supply device, and when the temperature detected by the temperature sensor exceeds a predetermined value, the supply of the high-concentration oxygen is stopped under the control of the control means, and voice guidance is performed. It is configured. At this time, it is preferable that the temperature sensor is provided in the vicinity of the oxygen outlet provided in the upper center of the medical oxygen supply device, and the predetermined value is preferably in the range of 60 ° C to 100 ° C.

  As described above, according to the present invention, the temperature sensor detects the temperature rise of the main body, etc., and notifies the possibility of ignition with a voice guide, so that not only the possibility of ignition can be reduced, but also in the event of ignition. Since the operation of the compressor and the supply of concentrated oxygen are stopped, it is possible to suppress the spread of fire due to the concentrated oxygen having auxiliary combustion properties, and thus it is possible to provide a medical oxygen supply device with improved safety. .

  Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the embodiments can be appropriately changed and are not limited to the examples. The medical oxygen supply apparatus of the present invention can use various pressure swing methods such as PSA method, VSA method, and VPSA method as means for obtaining high-concentration oxygen, but in this embodiment, the PSA method (positive pressure) The medical oxygen supply apparatus using the variable adsorption method will be described.

  FIG. 1 is an external perspective view of a medical oxygen supply device 1 according to an embodiment as seen from the upper left front side. The medical oxygen supply device 1 has a smart and seemingly small travel bag-like appearance that is slender in the vertical direction in order to minimize the installation location. For this reason, consideration is given so as not to let others know that the device is a medical oxygen supply device 1 with a glance.

In addition to being reduced in weight by about one-third the weight of conventional devices and pursuing energy saving, it can be used with the attached rechargeable battery and household power supply. The rechargeable battery can also be used as a backup power source in the event of a power failure. Furthermore, in the rechargeable battery usage mode, when the oxygen flow rate is set to 1.25L or more per minute, it has a function to automatically switch to the “tuned mode” in which oxygen is sent in synchronization with the intake air in order to save battery power. ing.

  The front cover 2a and back cover 2b are made of injection-molded resin parts, and other components including suction cylinders are also made lighter as much as possible to reduce the total weight to about 10kg (when using AC power supply and no carrier is provided) It was.

As a result, the handle 4 has a handle portion for making it a so-called portable type that can be carried by an adult with one hand, and provided with a handle 4 having a strength sufficient to withstand the force of lifting the medical oxygen supply device 1. Has produced a special feature.

The overall dimensions of the medical oxygen supply device 1 are rounded. Specifically, the width W is 350 mm × the depth D is 250 mm × the height H is 550 mm. For this reason, since the occupation area on a floor surface can be made as small as possible, it is aiming at size reduction with said weight reduction.

Further, as a design feature of the medical oxygen supply apparatus 1, a surface cover 2a that covers the front surface of the medical oxygen supply apparatus 1 three-dimensionally from the installation floor is handled as shown in FIG. While the accent line continuous to the bottom surface of 4 is integrally formed in a concave shape in the vertical direction on the left and right, the portion sandwiched between these accent lines is a light warm color system, and the operation panel 5 of the same color system is disposed above this, The remaining part including the back cover 2b has a beige or cream color.

By adopting a so-called two-tone modern design with the above design and color scheme, when the medical oxygen supply device 1 is installed indoors, it can be harmonized with other furniture such as furniture. Consideration. Further, the front cover 2a and the back cover 2b are made of, for example, ABS resin, which is a thermoplastic resin having impact resistance, thereby ensuring a degree of freedom in design. Further, the medical oxygen supply device 1 is placed on the carrier 12 via a bolt 12a, and the caster 12b provided integrally with the carrier 12 facilitates movement in a room or the like.

The operation panel 5 includes a display unit 128. The operation panel 5 is extended obliquely upward at an angle of, for example, about 10 degrees up to the joint surface with the back cover 2b at the opening below the handle 4, and in order from left to right. A power switch 6, an oxygen outlet 7, and an oxygen flow rate setting button 8 are arranged. Above the oxygen outlet 7 is shown a resin coupler 13 which is engaged with a stepped portion formed in the oxygen outlet 7 in an airtight manner and is detachably provided. The coupler 13 is set so that the opening of the extension tube 15 having a length of about 1 to 15 m communicates with the opening of the nasal cannula (oxygen inhaler) 14. The extension tube 15 is made of vinyl chloride resin or the like and has an outer diameter of 5 to 10 mm and an inner diameter of 3 to 6 mm.

The operation panel 5 is provided at a height substantially corresponding to a waist portion where a patient having a standard height (160 to 170 cm) stands with both hands lowered, so that the medical oxygen supply apparatus 1 can be kept standing. Can be operated. For this reason, it is not necessary to sit down and look into each other like a conventional device. Therefore, the burden on the chest and abdomen of the patient is greatly reduced. Furthermore, even a left-handed person can operate without any sense of incongruity because the dials are arranged in symmetrical positions with the oxygen outlet 7 at the center.

A hook (not shown) for hooking the extension tube 15 connected to the nasal cannula (oxygen inhaler) 14 may be provided. The extension tube 15 connected to the nasal cannula 14 has a total length substantially corresponding to the range of movement in the same room where the patient lives. When the extension tube 15 is not used, the extension tube 15 is wound several times and then extended. The tube 15 is hooked on the hook.

Further, for example, even when a patient hits the operation panel 5 violently, safety considerations are taken so as not to get injured. At a position corresponding to the ON position of the power switch 6, for example, an operation state lamp 128 a incorporating a light emitting LED that is lit in green and red is provided. Further, a battery remaining amount display portion 128d is provided on the operation state lamp 128a.

As shown in the figure, the central oxygen outlet 7 is also provided so that most of the enclosed portion is retracted from the operation surface of the operation panel 5 to the back side (the back side in the drawing), and the temperature sensor 221 is further provided. Is attached. The temperature sensor 221 uses a thermistor or a thermocouple, and the block diagram of the medical oxygen supply device 1 in FIG. 2 shows that the temperature sensor 221 exists inside the medical oxygen supply device 1 main body. However, a part or the whole may face the main body surface. On the oxygen outlet 7, an alarm display portion 128 c printed with “inspection” characters is provided. Below this alarm display portion 128c, there is provided an oxygen lamp 128b that incorporates, for example, a light emitting LED that lights in green and red. Moreover, the set oxygen flow rate (L / min) display part 128e is also provided. The battery remaining amount display portion 128d is fully lit for about 2 seconds when the power is turned on. Thereafter, when the remaining amount of the built-in battery 228 is 100%, all of the five levels of light emitting LEDs are turned on. In addition, every time the remaining battery level is reduced by 20%, the light is turned off from the right side and the number of lights is reduced.

When the remaining amount of the built-in battery 228 becomes 10% or less, a lamp with a built-in light emitting LED provided on the left side flashes red (lights intermittently) and warns with a built-in buzzer every 5 minutes. In this way, safety in use in the battery drive mode is ensured particularly when going out. The alarm display section 128c is printed with the letters “check”, and a built-in lamp is lit to notify when the oxygen concentration is lowered. In addition, a buzzer sounds when an abnormality occurs on the device side. In addition, when the device stops due to a power failure, it blinks and notifies the visually impaired person by sounding a buzzer. The oxygen lamp 128b is turned off in green when the oxygen is flowing normally, and is turned off when oxygen is not emitted. When the respiratory state cannot be detected for a certain time in the respiratory synchronization mode, the light turns red and a buzzer sounds.

When the power switch 6 is turned on, a buzzer sounds and all the lamps are lit in green for 2 seconds. And when using it in battery drive mode, it lights up according to the remaining amount in 5 steps | paragraphs of light emission LED after that. When the patient sets the predetermined flow rate with the oxygen flow rate setting button 8 according to the doctor's prescription, the oxygen supply is started. At the time of stop, when the power switch 6 is turned off, the oxygen lamp 128b is turned off, and the operation lamp 128a flashes for a while and then automatically ends. As an operation performed by the patient every day, there is a case where dust and dirt attached to the outside air introduction filter 22 provided on the back cover 2b are removed with a vacuum cleaner. In order to facilitate this operation, the outside air introduction filter 22 is configured to be easily detachable.

<Description of piping and block diagram of medical oxygen supply device 1>
FIG. 2 is a schematic diagram of the piping illustrated also serving as a block diagram of the medical oxygen supply apparatus 1. In the figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. The double line in the figure is a pipe 24 that is a flow path for air, oxygen, and nitrogen gas, and is generally indicated by the pipe 24. A thin solid line indicates power supply or electric signal wiring.

Here, in the following description, a case where a horizontally opposed two-cylinder compressor is used as the compressor 10 will be described. In addition, the main housing 2 that introduces outside air (air) into the compressor 10 through the intake port 2c and the filter 22 and discharges it to the outside through the exhaust port 2d is shown as a sealed container in the figure by a broken line. Yes.

In FIG. 2, description will be made sequentially along the flow of the introduced air. The raw material air (outside air) enters the compressor 10 located in the soundproof chamber 3 shown by a broken line in FIG. 1 through the air inlet 2c, the filter 22, and the pipe 24.

The filtered raw material air is pressurized by a compression mechanism of the compressor 10 to be described later to become compressed air. At this time, the temperature is raised in an aluminum lower manifold M1 (shown by a broken line) in which the pipe 24 is formed. Since it is sent out and cooled by the heat radiation effect of the lower manifold M1, the blower fan 30 can be downsized. The cooled compressed air is introduced into the first adsorption cylinder 108a and the second adsorption cylinder 108b. Thus, as a result of the function of zeolite, which is an adsorbent whose function deteriorates at high temperatures, oxygen can be concentrated to about 90% or more.

The compressed air is alternately supplied to the first adsorption cylinder body 108a and the second adsorption cylinder body 108b, which are arranged in parallel through the pipe 24 as described above. For this reason, the three-way switching valves 109a and 109b, which are switching valves, are connected as shown in the figure. In order to perform a purification process for desorbing unnecessary gases from these three-way switching valves 109a and 109b and the first and second adsorption cylinders 108a and 108b, the three-way switching valves 109a and 109b The pipe 24 is connected as shown in the figure.

Or of the first adsorption cylinder 108a and zeolite catalyst adsorbent are respectively stored in the second adsorption column body 108b _is, X-type Si0 2 / _Al 2 _{O 3} ratio of 2.0 to 3.0 The amount of nitrogen adsorbed per unit weight can be increased by using zeolite which is obtained by binding at least 88% or more of the tetrahedral unit of Al ₂ O ₃ with a lithium cation. In particular, a granule measurement value of about 0.3 to 0.6 mm and a fusion of at least 88% or more of tetrahedral units with a lithium cation are preferable.

By using such a zeolite, it becomes possible to reduce the amount of raw material air required to produce the same oxygen. As a result, the compressor 10 for generating compressed air can be of a smaller type, and further noise reduction can be achieved.

On the other hand, an equal pressure valve 107 including a check valve, a throttle valve, and an on-off valve is branched and connected to the outlet side above the first adsorption cylinder 108a and the second adsorption cylinder 108b as shown in the figure. A product tank 111 serving as a container for storing separated and produced oxygen having a concentration of about 90% or more is connected to the pipe 24 as shown in the figure.

On the downstream side of the product tank 111, a pressure regulator 112, which is a so-called regulator that automatically adjusts the pressure of oxygen on the outlet side to be constant, is piped. An oxygen concentration sensor 114, which will be described later, is connected to the downstream side of the pressure regulator 112 via a pipe 24 so that the oxygen concentration is detected intermittently (every 10 to 30 minutes) or continuously. A proportional opening valve 115 that opens and closes in conjunction with the oxygen flow rate setting button 8 is connected to the downstream side via a pipe 24, and an oxygen flow rate sensor 116 is further connected to the downstream side. A demand valve 117 is connected downstream of the oxygen flow sensor 116 via a negative pressure circuit board 118 for breathing synchronization control, and passes through the sterilization filter 119 to the oxygen outlet 7 of the medical oxygen supply device 1. Are connected to each other. With the above configuration, it is possible to inhale oxygen concentrated to about 90% or more at a maximum flow rate of 5 L / min to the patient via the nasal cannula 14 or the like.

Next, the power supply system includes an AC adapter 19 that is connected via the connector 130, an internal battery 228 that is built in the bottom of the main housing 2, and an external that is detachably provided via the connector 131. A battery 227 and a power supply control circuit 226 are included. The internal battery 228 and the external battery 227 are rechargeable secondary batteries, and the internal battery 228 is charged by receiving power from the power supply control circuit 226. The built-in battery 228 can be repeatedly charged and discharged at least about 500 times, and has a management function such as the remaining battery level, the number of charge / discharge cycles used, the degree of deterioration, and the output voltage. What has a management function which can confirm charge capacity and the frequency | count of charging / discharging with an external portable terminal etc. is preferable. In addition, the external battery 227 can be charged by receiving power from the power supply control circuit 226 in a connected state via the connector 131, but is normally repeatedly charged using a separately prepared battery charger. It will be. Or you may prepare as the external battery 227 which integrated the battery charger designed exclusively.

In the configuration of the power supply system described above, the medical oxygen supply device 1 operates in response to the power supply from the AC adapter 19 and the second power supply that operates in response to the power supply from the internal battery 228. The state is automatically switched to one of three power supply states, ie, a third power supply state that operates by receiving power supply from an external battery.

The power supply control circuit 226 is controlled by the central controller 200 so that the priority for this automatic switching is automatically determined in the order of the first power supply state, the third power supply state, and the second power supply state.

In addition, an ID tag code identification circuit 230 may be further connected to the power supply control circuit 226 to prevent a situation where the rechargeable battery runs out when being carried, as will be described later. That is, in order to prevent a situation where the rechargeable battery runs out when being carried, a modular power supply device that connects a plurality of built-in batteries 228 may be used. However, when a plurality of batteries are connected in this way, the power switching means becomes complicated. Moreover, it becomes impossible to monitor power consumption individually.

Therefore, among the plurality of built-in batteries 228,... 228, an identification ID tag code and a charge state detection means are individually provided to enable control to automatically switch from a discharged battery to a fully charged rechargeable battery. Is provided so that a discharged battery can be confirmed and switched to a fully charged battery. Furthermore, the number of batteries to be connected is freely selected according to the time when the battery is desired to be used, thereby improving convenience.

The central control unit 200 stores a program for switching to an optimal operation mode according to the amount of oxygen to be generated. When generating a large amount of oxygen, the central control unit 200 automatically drives the compressor 10 and the blower fan 30 at high speed. In the case of generating a small amount of oxygen, the built-in battery 228 is particularly conserved by performing the control through the motor control unit 201 and the fan motor control unit 203 that perform the rotation drive at a low speed. As a result, even when the external battery 227 is forgotten to be charged, it is possible to cope with sudden outings or power outages.

The central control unit 200 incorporates a ROM that stores a predetermined operation program, and is further connected to an external storage device 210, a circuit 207 including a volatile memory, a temporary storage device, and a real-time clock. The storage contents can be accessed by connecting to a communication line or the like via the communication line.

In addition, a control circuit that controls to desorb unnecessary gas in the first adsorption cylinder body 108a and the second adsorption cylinder body 108b by performing on / off control of the three-way switching valves 109a and 109b and the equal pressure valve 107. 208, a flow rate control unit 202 that drives and controls the oxygen concentration sensor 114, the proportional opening valve 115, the flow rate sensor 116, and the demand valve 117 is connected to the central control unit 200. The oxygen concentration sensor 114 may be a galvanic cell type, an ultrasonic type, a zirconia type, or the like, but a zirconia type oxygen concentration sensor is preferable in terms of size and measurement accuracy.

The compressor 10 having a total weight of about 500 g is driven by a variable speed control unit built in the motor control unit 201 so that the driving sound of the DC motor including the outer rotor type electric motor is controlled with a sine wave drive waveform. is doing.

The compressor 10 has a function only for generating compressed air as described above, and the rotation speed is automatically controlled according to the oxygen flow rate taken out, and the rotation speed is controlled between 500 rpm and 3000 rpm. Further, the compressor 10 has a performance of compressing air to about 60 to 150 kPa.

The operating temperature surrounding the compressor 10 is 0 ° C. to 40 ° C., and the driving voltage of the compressor 10 is DC 12V or 24V, which is a power source obtained from a cigarette lighter adapter such as an automobile or truck, and the power consumption is , About 30W. For this reason, in the worst case, the power can be supplied by connecting to the connector 131. Since the lower manifold M1 has a heat dissipation / cooling effect, a minimum necessary fan is sufficient, which contributes to noise reduction and power reduction.

As the three-way switching valves 109a and 109b, electromagnetic valves that perform a valve operation generally called a direct acting type by a magnetic force during energization can be used. This type of solenoid valve has a problem of high power consumption because the main valve is operated only by electric power. Therefore, a pilot-type three-way switching valve can be used as the three-way switching valves 109a and 109b. According to this pilot-type three-way selector valve, since it can be operated by using a little power consumption and the air pressure from the compressor, it is reduced from the conventional 8W to 0.5W, so the power consumption is greatly reduced. It will be planned.

Each of the above components can be fixed mainly from one direction as its mounting portion in consideration of the improvement of assembly workability and inspection maintainability of the medical oxygen supply device 1 with reduced noise. Designed to. That is, various control boards, the pressure regulator 112 that automatically adjusts the oxygen pressure to be constant as described above, the oxygen concentration sensor 114, the proportional opening valve 115 on the downstream side of the pressure regulator 112, and the oxygen flow rate sensor 116. The demand valves 117 connected to the negative pressure circuit board 118 for breathing synchronization control can all be fixed from one direction. In particular, components that generate vibration or noise are provided in the soundproof room 3 in a soundproof and vibration-proof state, so that the supply sound of compressed air, the introduction sound of external air, and the filtered air for producing raw air Noise is reduced by preventing the introduction sound and the periodically generated exhaust sound from leaking outside. Further, the operation sound of the three-way switching valve is soundproofed by covering with the soundproofing material (soundproofing sheet) 11 as described above. Further, since the main housing 2 is configured as a hermetic cover having a minimum necessary opening that is introduced into the inside through the air inlet 2c and discharged to the outside through the air outlet 2d, further noise reduction is achieved. It becomes possible to plan.

<Description of Temperature Sensor 221>
When the detected temperature becomes equal to or higher than a predetermined value, the temperature sensor 221 sends the electrical signal for voice guidance to the central control unit 200, the operation of the compressor 10 and the demand valve 117 are immediately closed to stop the supply of concentrated oxygen. It is like that. Based on the electrical signal informing the temperature abnormality, the central control unit 200 sends an electrical signal for stopping the operation of the compressor 10 to the motor control unit 201. For the flow rate control unit 202, the demand valve 117 is closed to close the concentrated oxygen. An electric signal for stopping the supply will be sent. Further, the predetermined value detected by the temperature sensor 221 is difficult to suppress the spread of fire if the set temperature is too high, and if the set temperature is too low, it may cause malfunction, so the tube material of the nose cannula 14 or the extension tube 15 is Considering that the heat-resistant temperature of these resins is 60 ° C to 100 ° C, such as vinyl chloride resin and urethane resin, the predetermined value detected by the temperature sensor 221 is preferably in the range of 60 ° C to 100 ° C. .

FIG. 3 is a flowchart for explaining the operation of detecting the abnormal change in the temperature of the medical oxygen supply device 1 by the temperature sensor 221 to stop the operation of the compressor 10 and the supply of concentrated oxygen and perform voice guidance. First, when the medical oxygen supply device 1 is activated, the process proceeds to step S10 and the temperature sensor 221 is measured. The temperature sensor 221 can measure the temperature of the apparatus main body continuously or every 5 minutes in consideration of power consumption. When the detected temperature is a preset temperature, for example, 60 ° C. or more in step S11. In step S12, the central control unit 200 that has detected the temperature abnormality from the temperature sensor 221 causes the motor control unit 201 to stop the operation of the compressor 10, and causes the flow rate control unit 202 to stop supplying the concentrated oxygen (step S12). . Thereafter, voice guidance is performed in step S13, and the process is terminated. On the other hand, when the temperature detected by the temperature sensor 221 is less than 60 ° C. in step S11, the process returns to step S10 and is repeated from the above step S10. In steps S12 and S13, if the operation of the compressor 10 and the supply of concentrated oxygen are stopped and voice guidance is executed, the objective is achieved. Therefore, even if the order of steps S12 and S13 is reversed, May be executed.

<Description of voice guide>
For voice guidance, the voice synthesis IC 250 controlled by the central control unit 200 executes voice guidance via a speaker 251 as voice guidance means. At this time, the speaker 251 only needs to be provided at a position where the voice guide can be easily heard. Therefore, the speaker 251 is not limited to the inside of the medical oxygen supply device 1 and is provided on the surface of the display panel 5 or the medical oxygen supply device 1. May be.

In addition, since the patient always has an additional freshly charged external battery, the patient can go out for a longer time and the QOL at that time is greatly improved. Moreover, you may provide the humidification means (not shown) for adding moisture to the flow of concentrated oxygen through a suitable connection part.

In addition, although this invention demonstrated by the medical oxygen supply apparatus using the PSA system (positive pressure fluctuation | variation adsorption method) as one Embodiment, as a means to obtain high concentration oxygen, oxygen by membrane type oxygen concentration and electrolysis Any method may be used as long as it is a method for obtaining high-concentration oxygen such as generation, air liquefaction separation, and oxygen generation by chemical reaction.

1 is an external perspective view of a medical oxygen supply device 1 according to an embodiment of the present invention. 2 is a block diagram that also serves as a piping diagram of the medical oxygen supply apparatus 1. FIG. FIG. 5 is a flowchart for explaining an operation in which the temperature of the apparatus is measured by the temperature sensor 221, and when the temperature is abnormal, the operation of the compressor 10 and the supply of concentrated oxygen are stopped and voice guidance is performed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Medical oxygen supply device 3 Soundproof room 5 Operation panel 10 Compressor 11 Soundproof material 114 Oxygen concentration sensor 221 Temperature sensor

Claims (3)

  A medical oxygen supply apparatus comprising means for obtaining high-concentration oxygen, a warning means for notifying abnormality by voice when an abnormality occurs, and a control means for controlling these, a temperature sensor at a proper position of the main body of the medical oxygen supply apparatus When the temperature detected by the temperature sensor exceeds a predetermined value, the supply of the high-concentration oxygen is stopped under the control of the control means, and voice guidance is performed.     2. The medical oxygen supply device according to claim 1, wherein an oxygen outlet is provided at an upper center of the medical oxygen supply device, and the temperature sensor is provided in the vicinity of the oxygen outlet. Medical oxygen supply device.     The medical oxygen supply apparatus according to claim 1 or 2, wherein the predetermined value is in a range of 60 ° C to 100 ° C.

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