JPH0426108Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of application of the invention) This invention is a method for absorbing air and adsorbing gases other than oxygen using an adsorbent for patients who require long-term oxygen therapy such as chronic respiratory failure. Or it relates to improvements in medical oxygen concentrators that supply gas with increased oxygen concentration by using membranes that allow more oxygen to pass through.

(Prior technology) Conventionally, commonly used medical oxygen concentrators operate the air compressor built into the main unit by turning on the power switch of the main unit, compressing the air. It has a structure in which highly pure oxygen is obtained by processing the air by passing through a membrane type or an adsorption column containing an adsorbent. In the unlikely event that oxygen supply stops due to a power outage or malfunction of the main unit's air compressor, a separate oxygen container is always kept as a backup, as long interruptions are undesirable for patients receiving oxygen therapy. has been done. Under normal conditions, the spare oxygen container is completely disconnected from the medical oxygen concentrator in use, but if you need to use the oxygen container in an emergency, the pressure reducing valve built into the medical oxygen concentrator or the Since the flow rate regulator and humidifier cannot be used as they are, these necessary equipment must be prepared in a separate system for the oxygen container. In this case, it requires wasted space for spare equipment, and it requires specialized knowledge and labor to attach special equipment to the oxygen container and start oxygen therapy, and it is difficult for the patient to In this case, there will be a blank period until oxygen supply is resumed.

(Purpose of the invention) The present invention automatically provides medical oxygen concentrator for patients using medical oxygen concentrators when the supply of oxygen from the oxygen concentrator stops due to a power outage or other unforeseen circumstances. The purpose of the present invention is to enable the switching function of the device to be activated to easily and immediately obtain the supply of oxygen from another system.

(Means for Solving the Problems) In order to solve the above problems, the present invention incorporates an oxygen container 10 for preliminary supply into a medical oxygen concentrator as shown in FIG. The concentrated oxygen supply pipe 2 from the concentrator 1 and the oxygen supply pipe 3 from the backup oxygen container 10 are connected so that the supply of oxygen to the patient will not be stopped even if an abnormal situation occurs in the oxygen concentrator 1. A solenoid valve 4 is installed in the middle of the oxygen supply pipe 3 as a function of automatically supplying oxygen from a spare oxygen container 10.

(Function) The concentrated oxygen supply pipe 2 from the oxygen concentrator 1 and the oxygen supply pipe 3 from the spare oxygen container 10 are connected, and when the oxygen supply pipe 3 is installed in the middle, it is "closed" when energized, and the power is turned off. The solenoid valve 4, which is in the "open" state, is connected to a solenoid switch 5 connected to a power source 9. Normally, concentrated oxygen is supplied from the concentrated oxygen supply pipe 2, but in the event of a power outage, the solenoid valve 4 opens and oxygen is automatically supplied from the spare oxygen container 10, and the oxygen concentrator is When this situation occurs, the electromagnetic switch 5 is opened by the signal from the oxygen concentrator 1.
As a result, the electromagnetic valve 4 is electrically cut off and the solenoid valve 4 is opened, and oxygen is automatically supplied from the spare oxygen container 10.

(Embodiment 1) FIG. 1 is a system diagram of a medical oxygen concentrator based on the present invention, and an oxygen concentrator 1 is connected to an oxygen concentrator power supply line 7 and a concentrated oxygen supply pipe 2. Oxygen supply piping 3 from the spare oxygen container 10
is connected to the concentrated oxygen supply pipe 2, and is equipped with a solenoid valve 4 that is closed when the power is on and opened when the power is cut off. Further, the power supply line 6 is provided with an electromagnetic switch 5 which is normally closed and which is opened by a signal from the oxygen concentrator 1.

In normal use, when the power supply 9 is turned on from a commercial power source or a battery, the oxygen concentrator 1 starts operating, and high purity concentrated oxygen is supplied to the concentrated oxygen supply pipe 2.
The oxygen is then reduced in pressure by a pressure regulator B12, humidified by a humidifier 13, and supplied to the patient through an oxygen mask or cannula connected to an oxygen outlet 14. On the other hand, the solenoid valve 4 is energized by the power supply line 6 via the normally closed solenoid switch 5 and is in the "closed" state, and reserve oxygen is supplied from the oxygen container 10 and the pressure regulator A11 The pressure is reduced by the oxygen supply line 3, and the oxygen is separated by a solenoid valve 4 in the oxygen supply pipe 3, so that the oxygen can be supplied at any time. Therefore,
An unexpected state of the oxygen concentrator 1, that is, an operating situation when sufficient oxygen concentration cannot be obtained due to an interruption in the supply of electricity or an internal abnormality will be described.

In case of power supply outage.

When the power supply 9 becomes unavailable due to an interruption in the supply from the commercial power supply due to a power outage or a plug falling off from the power outlet, power is not supplied to the solenoid valve 4 via the power supply line 6, so the solenoid valve 4 is opened, and the supply of oxygen from the spare oxygen container 10 is started instantly, and at the same time, the oxygen concentrator 1 is opened.
operation stops.

When sufficient oxygen concentration cannot be obtained due to an abnormality in the oxygen concentrator 1.

When the oxygen concentrator 1 malfunctions, that is, concentration may not be obtained due to an abnormal rise in temperature or lack of pressure, the sensors inside the main body detect the abnormality and issue an alarm. At the same time, an abnormal signal is sent to the electromagnetic switch 5. In response to the instruction of the signal, the electromagnetic switch 5 is opened, the power supply to the electromagnetic valve 4 is stopped, the electromagnetic valve 4 is opened, and oxygen is instantly supplied from the spare oxygen container 10.

(Example 2) In FIG. 2, by connecting the oxygen concentrator power supply line 7 to the power supply line 6 and supplying power under the same conditions as the electromagnetic valve 4, item 1 in the description of Example 1 can be achieved.・In the event that the power is no longer supplied, or in the event that sufficient oxygen concentration cannot be obtained due to an abnormality in the oxygen concentrator 1 described in Section 2. Power is no longer supplied to the concentrator 1 and the operation is stopped, and by opening the solenoid valve 4, oxygen is instantly supplied from the spare oxygen container 10.

(Embodiment 3) In FIG. 3, a switch 15 is provided on the power supply line 6 to the solenoid valve 4, and a gate valve 16 is attached to the oxygen supply pipe 3. This switch 15 and gate valve 1
6 have mutually interlocking mechanisms, and when the switch 15 is turned on, the gate valve 16 is opened by the interlocking mechanism 17.
becomes. In other words, by turning on the switch 15, the electromagnetic valve 4 becomes "closed", the oxygen concentrator 1 starts operating, and the gate valve 16 becomes "open" and enters a standby state. This interlocking mechanism 17 serves to prevent wasteful release of oxygen from the reserve oxygen container 10 when the electromagnetic valve 4 is "open" without power being supplied. In other words, only when the switch 15 is turned on, the gate valve 16 is "open" and oxygen is supplied from the reserve oxygen container 10, but when the switch 15 is not turned on, the gate valve 16 is opened.
is in the "closed" state, and no oxygen flows into the oxygen supply pipe 3 even if the solenoid valve 4 is "open".

(Effect of the invention) The oxygen concentrator according to the invention has a solenoid valve 4 installed in the middle of the oxygen supply piping 3 from the preliminary oxygen container 10.
is equipped with an "open" signal in the middle of the power supply line 6.
By installing the electromagnetic switch 5, if the oxygen concentrator 1 does not operate due to a power outage or inadvertent disconnection of the outlet while the oxygen concentrator is in use, the backup oxygen container 10 can be instantly and automatically disconnected. Oxygen can be supplied. Therefore, by using the oxygen concentrator of the present invention, when an unexpected situation such as a power outage occurs, a patient undergoing oxygen therapy can replace the humidifier or oxygen mask, prepare an oxygen container, and install a pressure regulator. Oxygen can be inhaled continuously without having to perform any other operations. The effects of the embodiment shown in FIGS. 2 and 3 are that when an abnormality occurs in the oxygen concentrator 1, damage to the oxygen concentrator can be prevented by detecting the abnormality, and that a low concentration of oxygen is detected in the supply pipe 2 at the same time as the abnormality is detected. This prevents oxygen from being supplied. Furthermore, as an effect of the embodiment shown in FIG. 3, there is an interlocking mechanism between the switch 15 and the gate valve 16. When the switch 15 is turned on, the gate valve 16 opens at the same time as the operation of the oxygen concentrator 1 starts, and the preliminary oxygen The oxygen is supplied to the valve 4 and is in a standby state, and when the switch 15 is turned off and the use is stopped, the gate valve 16 is closed to prevent wasteful release of oxygen from the spare oxygen container 10.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing the first embodiment of the oxygen concentrator, Fig. 2 is a system diagram showing the second embodiment of the oxygen concentrator, and Fig. 3 is a system diagram showing the third embodiment of the oxygen concentrator. It is a system diagram showing an example. 1... Oxygen concentrator, 2... Concentrated oxygen supply piping, 3... Oxygen supply piping, 4... Solenoid valve, 5...
Electromagnetic switch, 6... Power supply line, 7... Oxygen concentrator power supply line, 8... Signal line, 9... Power supply, 1
0... Oxygen container, 11... Pressure regulator A, 12
... Pressure regulator B, 13 ... Humidifier, 14 ... Oxygen intake port, 15 ... Switch, 16 ... Gate valve,
17...Interlocking mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a medical oxygen concentrator that increases the oxygen concentration in the air and supplies it, the oxygen supply pipe 3 from the oxygen container 10 is equipped with a connection function for a spare oxygen container. is equipped with a solenoid valve 4 that is "closed" when energized and "open" when there is a power outage, and the condensed oxygen supply pipe 2 from the oxygen concentrator 1 is connected to the solenoid valve 4, and the power supply line 6 to the solenoid valve 4 is connected. A medical oxygen concentrator with an automatic switching function, characterized in that it is equipped with an electromagnetic switch 5 that is normally closed in response to a signal from an oxygen concentrator 1 and is opened when a signal is input. (2) The medical oxygen concentrator according to claim 1, wherein the power supply line 7 to the oxygen concentrator 1 is connected to the power supply line 6 between the electromagnetic switch 5 and the electromagnetic valve 4. . (3) A switch 15 is provided in the power supply line 6, and a gate valve 16 is provided in the oxygen supply pipe 3 from the spare oxygen container 10, and when the switch 15 is turned on, the gate valve 16 is turned on. "open" and switch 1
The medical oxygen concentrator according to claim 2, which is a registered utility model and has an interlocking mechanism 17 for the switch 15 and the gate valve 16 so that the gate valve 16 is "closed" when the switch 5 is turned "off".