JP2003047659A - Expiratory air supplying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expiratory air supplying device capable of preventing the drying of the nasal cavity of a patient by setting the relative humidity of oxygen to a proper humidity of 50-70%, and preventing the dew condensation in a tube for supplying oxygen. SOLUTION: This expiratory air supplying device 1 comprises a housing vessel 12 opened upward to house humidifying water; a lid part 13 for attachably and detachably blocking the opening of the housing vessel 12, having a gas inflow port and outflow port; an inflow pipe 14 having one end connected to an oxygen generating means 2 and the other end arranged under the humidifying water, and fitted to the inflow port; and an outflow pipe 14 having one end connected to oxygen sucking means 6 and the other end set opposite to a space part 19 above the level of the humidifying water of the housing vessel 12, and fitted to the outflow port. This device further comprises a communicating pipe 17 for allowing the inflow pipe 14 to communicate with the outflow pipe 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breath supply device having a humidifying function for appropriately humidifying and supplying a breathing gas containing oxygen or an oxygen-enriched gas.

[0002]

2. Description of the Related Art Conventionally, oxygen therapy for supplying oxygen to patients with respiratory diseases is known. In this oxygen therapy, an oxygen inhaling means such as a nasal cannula is used to supply a respiratory gas (hereinafter referred to as oxygen) generated from an oxygen generating means such as an oxygen cylinder or an oxygen concentrator into the nasal cavity of a patient.

Since oxygen supplied from the oxygen generating means contains almost no water, if this oxygen is directly supplied to the patient, the nasal cavity of the patient will be dried. In order to prevent this, an exhalation supply device having a humidifying function is connected to the oxygen generating means so that the oxygen contains moisture.

As shown in FIG. 4, for example, the breath supply device 31 stores a humidifying water 30 therein and a storage container 32 which opens upward, and an upper opening of the storage container 32 which is detachably sealed so as to remove oxygen. An inflow pipe 34 having an inflow port and an outflow port, one end of which is connected to the oxygen generating means 40 and the other end of which faces the storage container 32 and which is fitted into the inflow port; Is connected to the oxygen suction means 41, and the outflow pipe 35 fitted into the outflow port is provided with the other end facing the storage container 32. A porous body 36 is attached to the other end of the inflow pipe 34, and the other end is immersed in the water. The other end of the outflow pipe 35 is arranged in the space 37 above the water level of the humidifying water 30.

The oxygen supplied from the oxygen generating means 40 is released into the humidification water 30 through the inflow pipe 34, and the oxygen humidified by being released into the water is sent out from the outflow pipe 35, whereby the oxygen suction means 41 is provided. It supplies oxygen to. This method is called a bubbling method because bubbles are generated when oxygen is released into the humidifying water 30.

Further, the end of the inflow pipe 34 on the side of the storage container 32 is disposed in the space 37 above the water level of the humidifying water 30 without being immersed in the water, and oxygen supplied from the oxygen generating means 40 is stored in the container. There is also a system in which the moisture in the space 37 is added to oxygen and the oxygen is supplied to the oxygen suction means 41 by passing the space 37 inside. This method is called a non-bubbling method.

[0007]

By the way, in the bubbling method, oxygen is humidified up to a saturated steam pressure, so that when the temperature in the room is lower than the temperature of humidified oxygen,
Condensation accumulates in the tube that connects the breath supply device 31 and the oxygen inhalation means 41, water enters the nasal cavity, causing discomfort to the patient, and bacteria accumulate in the accumulated water. It can be unsanitary.

Further, in the non-bubbling method, it is conceivable that the humidification amount added to oxygen is unstable depending on the room temperature.

The present invention is intended to solve the above-mentioned conventional problems, and the relative humidity of oxygen is 50% to 50%.
(EN) An exhalation supply device in which a proper humidification amount of 70% is used to prevent the inside of a patient's nasal cavity from being dried and to prevent dew condensation in a tube for supplying oxygen.

[0010]

In order to achieve the above object, the invention according to claim 1 has a storage container which opens upward and stores humidifying water, and the opening of the storage container is detachably sealed. A lid having a gas inlet and a gas outlet,
An inflow pipe, one end of which is connected to oxygen generating means and the other end of which is immersed in humidified water in a storage container and which is fitted into the inlet, and one end of which is connected to oxygen suction means and the other end of which is humidified water in the storage container. In an exhalation supply device having an outflow pipe which faces the space above the water level and is fitted into the outflow port, a communication means for connecting the inflow pipe and the outflow pipe is provided.

According to a second aspect of the present invention, in the exhalation supply device according to the first aspect, the communication means is a communication pipe that connects an inflow pipe and an outflow pipe outside the main body of the exhalation supply device. To do.

According to a third aspect of the present invention, in the exhalation supply apparatus according to the first or second aspect, the communication means is provided with a flow rate setting device for setting the flow rate of the gas flowing through the communication means. And

According to a fourth aspect of the present invention, there is provided a storage container which opens upward and stores the humidifying water, and a lid portion which is detachably sealed to the opening of the storage container and has a gas inlet and a gas outlet. An inflow pipe, one end of which is connected to the oxygen generating means and the other end of which is immersed in the humidified water of the storage container and is inserted into the inlet, and one end of which is connected to the oxygen suction means and the other end of which humidifies the storage container. In an exhalation supply device having an outflow pipe which faces the space above the water level and is fitted into the outflow port, a plurality of ventilation holes are provided in an inflow pipe located in the space of the storage container,
It is characterized in that a blocking means capable of sequentially blocking these ventilation holes is provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view showing an exhalation supply device according to Embodiment 1 of the present invention.

In FIG. 1, an exhalation breathing apparatus 1 of Embodiment 1 is an oxygen generating means 2 for oxygen (or oxygen) -containing breathing gas (hereinafter referred to as oxygen) such as an adsorption type oxygen generating apparatus or an oxygen cylinder, and oxygen. Piping means 3 for supplying oxygen, and flow rate adjusting means 4 for adjusting the flow rate of oxygen by a valve or the like.
And the like are provided on the downstream side of the oxygen supply device 10. Further, the breath supply device 1 is connected to an oxygen inhaling means 6 such as a nasal cannula via a connecting tube 5.

The main body 1A of the exhalation supply device 1 is a humidifying water 11
A storage container 12 that stores a required amount of the above and opens upward, and a lid portion 13 that hermetically seals the upper opening of the storage container 12 and that has an oxygen inlet and an outlet.

One end of the lid portion 13 has an oxygen generating means 2
And an inflow pipe 14 fitted to the inlet with the other end facing the storage container 12 and one end connected to the oxygen suction means 6 and the other end facing the storage container 12. An outflow pipe 15 to be fitted into the outflow port is provided, and a porous body 16 for making the introduced oxygen into fine bubbles is attached to a front end opening portion 14a of the inflow pipe 14 on the side of the storage container 12, and this front end is provided. The opening 14a is disposed so as to be immersed in the humidifying water 11. The end portion 15a of the outflow pipe 15 on the storage container 2 side
Is arranged above the water level of the humidifying water 11. further,
A communication pipe 17 that connects the two pipes 14 and 15 is connected to the inflow pipe 14 and the outflow pipe 15 outside the main body 1A.
A flow rate setting device 18 using an orifice is provided in the middle of 7. The flow rate setter 18 determines the flow rate by the diameter of the orifice (for example, diameter 0.8 mm).

In the breath supply device 1 having the above-described structure, oxygen delivered from the oxygen generating means 2 flows into the inflow pipe 14 through the piping means 3 and the flow rate adjusting means 4. A part of the oxygen flowing into the inflow pipe 14 is part of the flow rate setter 18
The flow rate is set to a predetermined flow rate determined by the diameter of the orifice, and the set predetermined amount of oxygen flows into the outflow pipe 15 through the communication pipe 17. On the other hand, the rest of the oxygen that has flowed into the inflow pipe 14 flows into the storage container 12 and the porous body 1
It is released into water through 6 and becomes a bubble. The bubbles are humidified while rising in the water, and the humidified oxygen (gas humidity of about 80%) is sent from the space portion 19 of the storage container 12 to the outflow pipe 15. The oxygen that has passed through the storage container 12 is
While the storage container 12 is humidified to about 80%, oxygen that bypasses the storage container 12 and passes through the communication pipe 17 is
Since it is hardly humidified (gas humidity is about 5%), both are joined together in the outflow pipe 15 and mixed to generate appropriately humidified (gas humidity 50 to 70%) oxygen. This appropriately humidified oxygen is sent to the oxygen suction means 6 and discharged from the oxygen suction means 6.

FIG. 2 is a table showing the relationship between the oxygen supply amount and the humidity of the gas humidified by the exhalation supply device, and 0.25 to 3 liters / min of oxygen is supplied to the exhalation supply device.

In FIG. 2, in the bubbling system in which all the oxygen supplied from the oxygen generating means 2 is passed through the humidified water in the storage container 12, the oxygen is humidified to about 80% regardless of the amount of oxygen supplied. Has been done.

Further, in the method of the first embodiment in which the oxygen supplied from the oxygen generating means 2 passes through the storage container 12 and the communication pipe 17, the oxygen is humidified to 56 to 68%, and the oxygen contains a proper humidity. Can be made.

In this way, the oxygen supplied from the oxygen generating means 2 is divided into one that passes through the humidified water in the storage container 12 and one that passes through the communication pipe 17 that bypasses the storage container 12. By mixing high humidity oxygen passing through the storage container 12 and low humidity oxygen passing through the communication pipe 17, oxygen having an appropriate humidity can be generated. This prevents dryness in the patient's nasal cavity and
It is possible to prevent dew condensation even when the room temperature is low or the oxygen supply is low.

Further, in the method of the first embodiment, it is possible to reduce the change in the humidity of the gas at room temperature, as compared with the non-bubbling method.

In the first embodiment, the flow rate controller 18 for passing a predetermined amount of oxygen is provided in the middle of the communication pipe 17, but a flow rate controller capable of adjusting the oxygen amount may be provided.

[Second Embodiment] The second embodiment of the present invention will be described below.
Will be described with reference to the drawings. FIG. 3 shows a second embodiment of the present invention.
3 is a vertical cross-sectional view showing the exhalation supply device in FIG. The same components as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 3, the breath supply device 21 of the second embodiment is provided on the downstream side of the oxygen supply device 10 and is further connected to the oxygen suction means 6. As shown in FIG. 3, the main body 21A of the exhalation supply device 21 includes a storage container 12 and a lid portion 13.
It consists of and. A lid portion 1 that hermetically seals the upper opening of the storage container 12 and has an oxygen inlet and an outlet.
3 and 3.

The lid portion 13 comprises a storage container 12 and a lid portion 13 that hermetically seals the upper opening of the storage container 12 and has an oxygen inlet and an outlet.

One end of the lid 13 is an oxygen generating means 2
And an inflow pipe 24 that is fitted into the inflow port with the other end facing the storage container 12 and one end connected to the oxygen suction means 6 and the other end facing the storage container 12. An outflow pipe 25 fitted into the outflow port is provided, and a porous body 16 for making introduced oxygen into fine bubbles is attached to a front end opening portion 24a of the inflow pipe 24 on the side of the storage container 12, and this opening is provided. The portion 24a is disposed so as to be immersed in the humidifying water 11, and three ventilation holes (for example, a circular hole having a diameter of 0.5 mm) are vertically arranged on the outer peripheral surface of the inflow pipe 24 located in the space portion 19. 27a, 27b, and 27c are arranged and provided. Further, on the outer peripheral surface of the inflow pipe 24, a cylindrical sealing component 28 that can be fixed so as to be vertically slidable is provided. By sliding the sealing component 28, the ventilation holes 27a, 27b, 27c can be sequentially blocked from one to three, and the amount of oxygen discharged into the space 19 can be adjusted. The other end opening 25 a of the outflow pipe 25 is arranged above the water level of the humidifying water 11.

The exhalation supply device 21 configured as described above.
At the vent hole 27 formed in the outer peripheral portion of the inflow pipe 24,
When all of a, 27b, and 27c are opened, the oxygen sent from the oxygen generating means 2 is transferred to the piping means 3 and the flow rate adjusting means 4.
A part of the oxygen that has flowed into the inflow pipe 24 through the inflow pipe 24 and has flowed into the inflow pipe 24 is partially vented to the vent hole 2
7a, 27b and 27c are discharged into the space portion 19 of the storage container 2. On the other hand, the rest of the oxygen that has flowed into the inflow pipe 24 flows into the humidifying water 11 in the storage container 2 and the porous body 16
Is released into water via the water to form bubbles, and the bubbles are humidified while rising in the water. The humidified oxygen is sent to the space portion 19 of the storage container 12. The humidified oxygen and the oxygen discharged from the ventilation holes 27a, 27b, 27c merge and mix in the space portion 19 and are sent to the outflow pipe 25. The oxygen that has passed through the storage container 12 and has been humidified is humidified to about 80%, while the vent hole 27
Oxygen discharged from a, 27b, and 27c is almost not humidified (gas humidity is about 5%), so that the two are merged and mixed, so that oxygen is appropriately humidified (gas humidity is about 50% to about 50%). 70%). In this case, oxygen is 60
It is sent to the oxygen inhaling means 6 after being humidified to around%, and discharged from the oxygen inhaling means 6.

Here, by closing one to three vent holes, oxygen humidification can be adjusted and supplied between about 55% and about 80%. 3
When all the two vent holes 27a, 27b, and 27c are blocked, oxygen is about 80% as shown in the bubbling method of FIG.
Humidified to%.

As described above, according to the method of the second embodiment, by adding an appropriate amount of moisture to oxygen, the inside of the nasal cavity of the patient is prevented from drying, and dew condensation occurs even when the room temperature is low or the oxygen supply amount is small. Can be prevented.

Further, in the method of the second embodiment, the change in the humidity of the gas due to room temperature can be reduced as compared with the non-bubbling method.

Although the present invention has been described based on the first and second embodiments, the present invention is not limited to this.

In the first and second embodiments, the inflow pipes 14, 24 are
Although the porous body 16 is attached to the tip opening portions 14a and 24a of the above, the porous body 6 may not be attached.

Further, in the second embodiment, the ventilation hole 27
Three a, 27b, and 27c are provided, but the number is not limited.

[0036]

As described above, the breath supply apparatus of the present invention includes a storage container for storing humidifying water, a lid portion for sealing the opening of the storage container, and an inflow pipe connected to the oxygen generating means. , An outflow pipe connected to the oxygen inhaling means, and a communicating means for communicating the inflow pipe and the outflow pipe, and breathing gas supplied from the oxygen generating means is passed through humidified water in the storage container to breathe with high humidity. In addition to generating a working gas, a breathing gas with a proper humidity is generated by mixing a breathing gas with a low humidity that does not pass humidifying water into this breathing gas with a high humidity, so that the gas inside the patient's nasal cavity It is possible to prevent drying and prevent condensation even when the room temperature is low or the oxygen supply amount is small.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an exhalation supply device according to a first embodiment of the present invention.

FIG. 2 is a table showing the relationship between the oxygen supply amount and the humidity of gas humidified by the exhalation supply device of FIG.

FIG. 3 is a vertical cross-sectional view showing an exhalation supply device according to a second embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view showing an example of a conventional exhalation supply device.

[Explanation of symbols]

1,21 Exhalation supply device 2 Oxygen generating means 5 tubes 6 Oxygen inhalation means 12 storage containers 13 Lid 14, 24 Inflow pipe 15, 25 Outflow pipe 17 Communication pipe (communication means) 18 Flow rate setting device 19 Space Department 27a, 27b, 27c Vent hole 28 Blocking parts (blocking means)

Continued front page    (72) Inventor Hiroshi Noguchi             1 Otsuki-cho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning             Within the corporation (72) Inventor Kazuzo Yamada             1 Otsuki-cho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning             Within the corporation (72) Inventor Kiyoto Kobayashi             1 Otsuki-cho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning             Within the corporation F-term (reference) 3L055 AA10

Claims (4)

[Claims] 1. A storage container which opens upward and stores humidifying water, and a lid portion which is detachably sealed in the opening of the storage container and has a gas inlet and a gas outlet, and one end of which is an oxygen generating means. And an inflow pipe that is disposed at the other end by being immersed in the humidified water of the storage container and fitted into the inflow port, and a space that is connected to the oxygen suction means at one end and the other end is above the water level of the humidification water in the storage container. An exhalation supply device having an outflow pipe which faces the portion and is fitted into the outflow port, wherein an exhalation supply device is provided, which is provided with a communication means for communicating the inflow pipe and the outflow pipe. 2. The exhalation supply device according to claim 1, wherein the communication means is a communication pipe that connects an inflow pipe and an outflow pipe outside the exhalation supply device main body. 3. The exhalation breathing apparatus according to claim 1, wherein the communication means is provided with a flow rate setting device for setting a flow rate of the gas flowing through the communication means. 4. An oxygen generating means having a storage container which opens upward and stores the humidifying water, and a lid portion which is detachably closed to the opening of the storage container and has a gas inlet and a gas outlet. An inflow pipe connected to the other end of the humidifying water of the storage container and inserted into the inlet, and a space above the water level of the humidifying water of the storage container, the other end of which is connected to the oxygen suction means. In an exhalation supply device having an outflow pipe which faces the portion and is fitted into the outflow port, a plurality of vent holes are provided in the inflow pipe located in the space of the storage container, and a blocking means capable of sequentially blocking these vent holes is provided. An exhalation supply device characterized by being provided.