JPH1199203A - Gas feeding device for respiration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a respiratory synchronization by a timer setting, and enable an inexpensive cannula to be used by a method wherein valves to open/ close the stream of a formed gas are attached on the downstream side of a storage tank, and the valves are opened/closed corresponding with the discharging and stopping periods of time of the timer. SOLUTION: Air around this gas feeding device for respiration is pressurized by a compressor 1, and is fed to adsorption cylinders 3 through solenoid valves 2. In this case, one of the solenoid valves 2 is opened, and the other is closed alternately, and the air is fed only to the adsorption cylinder 3 which is connected to the opened solenoid valve 2. In the adsorption cylinder 3, nitrogen gas is adsorbed, and a gas wherein oxygen is enriched is produced as a formed gas, and is stored in a storage tank 5. The formed gas in the storage tank 5 is discharged from the storage tank 5 by controlling a discharging period of time and a stopping period of time being set by a timer 7 by a control unit 9, and by opening/closing a solenoid valve 8, during the discharging period of time set by the timer 7, and is fed to a patient through a nostril cannula.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a respiratory gas supply device mainly used for home oxygen therapy by patients with respiratory diseases, and a timer can set a discharge time and a stop time according to a user. The present invention relates to a respiratory gas supply device capable of reliably discharging and stopping.

[0002]

2. Description of the Related Art Oxygen therapy for providing oxygen-enriched gas (hereinafter referred to as "oxygen") to patients with respiratory diseases, especially oxygen therapy at home, has been emphasized in recent years and has become popular. In these types of oxygen therapy, the nasal cannula, which is called an oxygen cannula, generally sends a constant flow of oxygen to the patient.

[0003] As a general method, there is a gas supply device for continuously supplying oxygen, and since oxygen is constantly flowing in a nasal cannula, the nasal cavity of a patient may dry and give pain to the patient. As a method of eliminating dryness in the nasal cavity, a gas supply device that takes a method of supplying oxygen of a certain humidity to a patient through a humidifier has been devised, but bubbles are generated by bubbling of gas in the humidifier. If the plosive sound is heard, or if the room temperature is lower than the temperature of the humidified gas, condensation will form downstream of the nasal cannula, causing water to accumulate in the nasal cannula and water to enter the patient's nasal cavity. However, there are problems such as discomfort to the patient and power consumption.

[0004] Further, the breathing of the patient is sensed by a pressure sensor, a temperature sensor and a pyroelectric sensor in a nasal cannula, and oxygen is discharged only during inspiration, and during exhalation, the supply of oxygen is stopped to stop oxygen supply. Methods for reducing consumption have been taken. Even when using the method synchronized with the patient's breath, for patients with respiratory diseases, the patient's breathing may be disturbed even when going up and down stairs, and when using the method synchronized with the patient's breathing, Because the patient breathes quickly, it may not be synchronized with the breath, which may cause discomfort to the patient, and the sensor installed in the nasal cannula is difficult to process into the cannula, and the cannula itself becomes expensive There was a defect.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to realize a respiratory gas supply apparatus which can perform respiratory synchronization by setting a timer and which can use an inexpensive cannula. is there.

[0006]

That is, the present invention has an adsorption column filled with a plurality of adsorbents, and in the adsorption step, air is supplied from the inlet side of the adsorption column by a pressurizing means. Then, nitrogen gas is mainly adsorbed on the adsorption column, oxygen-enriched gas is taken out from the outlet side of the adsorption column as product gas, stored in a storage tank, and a constant flow rate is continuously taken out. Then, the pressure is reduced to atmospheric pressure. At this time, the nitrogen gas in the adsorbent is released and released to the outside air.
In the respiratory gas supply device by the pressure fluctuation adsorption method to obtain the product gas continuously by alternately performing the desorption process,
At the front or side of the gas supply device, a timer for setting the time for discharging and stopping the generated gas is attached, and a valve for opening and closing the flow of the generated gas is installed downstream of the storage tank, and the timer is discharged and stopped. A respiratory gas supply device that opens and closes a valve according to time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these embodiments. FIG. 1 is a view showing the overall configuration of a respiratory gas supply device according to one embodiment of the present invention, which is an embodiment using two suction cylinders.

First, a compressor (1), which is a means for pressurizing air, an electromagnetic valve (2) disposed between pipes for sending compressed air from the compressor to an adsorption cylinder (3), nitrogen gas in the air (3), a silencer (4) having a silencing function when releasing nitrogen gas to the outside air, and an oxygen-enriched gas generated from the adsorption cylinder. A storage tank (5) for storing gas, a one-way valve (6) arranged between the adsorption cylinder and the piping of the storage tank, a timer (7) for setting a discharge time and a stop time, and a timer for discharging and stopping the generated gas. An electromagnetic valve (8) for controlling the electromagnetic valve, a control unit (9) for controlling the electromagnetic valve by a signal of a timer, and a flow controller (10) for setting a flow rate suitable for a patient.

[0009] As a process until the product gas is formed, air around the breathing gas supply device is pressurized by the compressor (1), and the pressurized air passes through the solenoid valve (2).
It is supplied to the adsorption cylinder (3). Here, one of the solenoid valves is open,
The other is closed, and air is supplied only to the adsorption cylinder connected to the opened electromagnetic valve. When air is supplied,
In the adsorption cylinder, nitrogen gas is adsorbed in the adsorption cylinder, and an oxygen-enriched gas is produced as a product gas. When the solenoid valve is switched, the suction cylinder on the side of the solenoid valve which has been opened is closed and opened to the atmospheric pressure, so that the nitrogen gas is released and released to the atmosphere through the silencer (4). On the other hand, the solenoid valve that has been closed is opened and air is sent in to produce product gas. By repeating this, the generated gas is continuously produced. The produced gas generated passes through the one-way valve (6) and is stored in the storage tank (5). The one-way valve does not allow the generated gas to flow back from the storage tank to the adsorption column. The generated gas in the storage tank is released by opening and closing the solenoid valve (8), and the control unit (9) controls the discharge time and the stop time set by the timer (7) to open and close the solenoid valve. Accordingly, the generated gas is released from the storage tank during a state in which the solenoid valve is open, that is, during the discharge time set by the timer, and a constant flow rate determined for each patient by the prescription is set by the flow rate regulator (10). The gas is supplied to the patient through the nasal cannula, and in the closed state, the generated gas is stopped by the solenoid valve.

[0010] According to the present invention, the timer can be freely set by the patient to be operated, so that the setting can be changed at any time according to the patient's own situation. In other words, when the patient's breathing is disturbed, the setting can be changed and the patient can adjust to his / her own breathing, and the patient can breathe according to the timer setting. At this time, it is preferable that the timer to be set be attached to the front surface or the side surface where the operation of the breathing gas supply device is easy. In addition, the method of making settings using a remote controller is one of the preferred embodiments because operability is further increased. As for the setting of the timer, a timer capable of setting the discharge and the stop from 0.1 second to 99 seconds is preferable. In addition, either of an analog type or a digital type may be used, but any type may be used as long as the set time can be clearly confirmed.

Further, since oxygen is not supplied during the stop time by the timer, the generated gas is stored in the storage tank accordingly, so that a smaller and lighter compressor is used as compared with a compressor that continuously discharges the generated gas. As a result, power consumption is small, and a small and lightweight breathing gas supply device is obtained.

Further, according to the present invention, the discharge time and the stop time set by the timer are controlled by the control unit to open and close the valve. The valve and the valve disposed between the compressor and the adsorption cylinder are electrically operated. Either a pneumatic type or an electromagnetic type may be used, but an electromagnetic type that has good responsiveness of opening and closing by control and good hermeticity when closed is preferable. In FIG. 1, an electromagnetic valve is used as the valve.

[0013] Since it is used in respiratory synchronization, there is no need for a humidifier because there is little drying in the nasal cavity. In addition, because of respiratory synchronization set by a timer, the intranasal cannula used is an inexpensive cannula generally used. .

[0014]

By using the respiratory gas supply device of the present invention, the discharge time and stop time of the generated gas can be set at the operator's free time, so that the gas can be accurately generated even in a state where it is difficult to cope with the conventional method. Gas can be reliably discharged and stopped.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a respiratory gas supply device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Solenoid valve 3 Adsorption cylinder 4 Silencer 5 Storage tank 6 One-way valve 7 Timer 8 Solenoid valve 9 Control part 10 Flow controller

Claims (2)

[Claims] In the adsorption step, air is supplied from the inlet side of the adsorption cylinder by a pressurizing means to mainly adsorb nitrogen gas to the adsorption cylinder, and the adsorption cylinder has a plurality of adsorption cylinders. Oxygen-enriched gas is taken out from the outlet side of the adsorption cylinder as product gas, stored in a storage tank, and a constant flow rate is continuously taken out.The adsorption cylinder is depressurized to atmospheric pressure in the desorption step. Nitrogen gas is released and released to the outside air, and the adsorption / desorption process is alternately performed to continuously obtain product gas. In the respiratory gas supply device by the pressure fluctuation adsorption method, the front or side surface of the gas supply device is used. A timer for setting the time for discharging and stopping the generated gas is attached to the tank, and a valve for opening and closing the flow of the generated gas is installed downstream of the storage tank, and the valve is opened and closed according to the discharging and stopping time of the timer Do A respiratory gas supply device characterized by the above-mentioned. 2. The respiratory gas supply device according to claim 1, wherein the timer setting can be operated by a remote controller.