JPH107082A - Respiration bag of circulating type respiration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a respiration bag of a circulating type respiration device in which the entire respiration bag is prevented from being fixed and its manufacturing may easily be carried out. SOLUTION: Since a respiration bag 3 of a circulating type respiration device is constructed such that a fixing preventing member 51 formed by making material differing from that of an inside part of a main body into a plate-like shape is arranged at an entire section or its part within a main body, inner sides of a main body 29 of the respiration bag 3 are prevented from being overlapped to each other even when the respiration bag 3 is shrunk. In such a way, its fixing is prevented to enable an effective volume of the respiration bag 3 to be assured. When the respiration bag 3 is manufactured, even when its outer circumference part is melted and fixed under a state in which the fixing preventive member 51 is arranged within the main body, a wrinkle is hardly formed at the outer circumference part due to the fact that the fixing preventive member is of a plate-like form and has a thin thickness, resulting in that it is possible to perform an easy manufacturing of the respiration bag 3 having a high air-tightness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a respiratory apparatus used underwater, and more particularly, to a respiratory apparatus which uses respiratory gas by removing carbon dioxide from respiratory gas circulating in a respiratory circuit. The present invention relates to a respiratory bag of a circulating respirator that expands and contracts due to inflow and outflow of air.

[0002]

2. Description of the Related Art In general, a semi-closed respirator as a recirculating respirator includes a respiratory bag, a valve unit, a canister (carbon dioxide adsorbing device), and a respiratory gas cylinder. Is removed and excess respiratory gas is discharged from the respiratory circuit while supplying respiratory gas into the respiratory circuit.

[0003] This kind of conventional respiratory breathing apparatus is provided with an extensible breathing bag.
For example, as disclosed in Japanese Patent Application Laid-Open No. Hei 7-215291, a seamless type obtained by blow molding a synthetic resin such as a urethane resin is known.

[0004]

However, in the conventional breathing bag, seawater easily enters the main body, and the inside of the breathing bag tends to be slimy due to the moisture of the breathing gas.

When such slimming occurs, as shown in FIG. 8, when the breathing bag 101 contracts, there is a possibility that the breathing bag is fixed and it is difficult to return to the original state. In particular, in the case where the air is fixed in the vicinity of the inflow / outflow port 103 of the breathing air, the ventilation passage may be blocked and the expansion / contraction operation may be difficult.

As a member for preventing the breathing bag from sticking, it is conceivable to insert a pipe member into the breathing bag. When the pipe member is arranged, the sticking at that portion can be prevented, but the pipe is not arranged. In some parts, the fixation of the breathing bag cannot be prevented, and if the fixation occurs, the capacity of the effective breathing bag is substantially reduced.

In the portion where the pipe member is arranged,
Since the swelling of the main body of the breathing bag occurs, it becomes difficult to manufacture the main body of the breathing bag with the anti-sticking member inserted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a respiratory bag for a circulating respirator that prevents sticking in the respiratory bag and is easy to manufacture.

[0009]

In order to achieve the above object, according to the present invention, there is provided a respiratory apparatus for removing carbon dioxide from a respiratory gas circulating in a respiratory circuit and utilizing the respiratory gas. In the breathing bag used in the present invention, a plate-shaped sticking prevention member, which is a separate material from the body, is disposed on the whole or a part of the inside of the body. It is a feature.

According to the first aspect of the present invention, since the plate-shaped fixing prevention member is disposed on the whole or a part of the body of the breathing bag, even if the breathing bag shrinks,
Since the insides do not overlap with each other, and the inside of the main body is always interposed with a fixing prevention member made of a different material, the main bodies are prevented from overlapping and fixing each other. That is, in the case of the main bodies, if the same material is overlapped, they are easily fixed to each other. However, since members of different materials are interposed, it is difficult to fix.

In particular, by preventing such sticking, the effective capacity of the breathing bag can be ensured.

Further, when the breathing bag is manufactured, even if such an anti-adhesion member is disposed in the main body, it is in a play-like shape and the thickness is small, so that handling during the manufacturing is not hindered. Is to make it easier.

According to a second aspect of the present invention, there is provided a breathing bag which is used in a circulating breathing apparatus that uses a respiratory gas by removing carbon dioxide from a respiratory gas circulating in a respiratory circuit, and that expands and contracts by inflow and outflow of the gas. The breathing bag is characterized in that a net-shaped sticking prevention member is arranged on the whole or a part of the inside of the main body.

According to a second aspect of the present invention, similar to the first aspect of the present invention, a net-shaped sticking preventing member is disposed on the whole or a part of the main body of the breathing bag. When the bag shrinks, the bag bodies are prevented from overlapping and sticking to each other.

In particular, by using the mesh member, even when the breathing bag is shrunk, the mesh serves as a gas passage to sufficiently secure the breathing passage.

The third aspect of the present invention is the first or second aspect.
The breathing bag according to any one of the first to third aspects, characterized in that the body of the breathing bag is formed by laminating a cloth coated with an airtight material and welding the outer periphery thereof.

According to the third aspect of the present invention, since the plate-like body or the net-like body is used as the sticking prevention member, the overall thickness does not increase even if the cloth for the breathing bag body is overlapped. With the fixing prevention member sandwiched between the doughs, the outer periphery of the dough can be securely welded while maintaining the airtightness, and can be easily manufactured.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described in detail with reference to FIG.

The semi-closed respirator 1 as a recirculating respirator using the respiratory bag according to the present invention comprises a respirator 3, a canister (carbon dioxide adsorbing device) 5, and a canister 5, as schematically shown in FIG. It is composed of a breathing gas cylinder (gas cylinder) 7 and a mouthpiece 9. In the case of exhaustion, the respiratory gas discharged from the mouthpiece 9 passes through the exhaust pipe 4 and passes through the connection port 45 to form the breathing bag 3. In the case of inhalation, the respiratory gas in the respiratory circuit is supplied from the respiratory gas in the respiratory bag 3 through the canister 5 to the mouthpiece 9 through the intake pipe 10. Air is supplied to the canister 5 quantitatively from the breathing gas cylinder 7 via the medium pressure pipe 25.

Next, each component of the semi-closed respirator 1 will be described.

The intake pipe 10 and the exhaust pipe 4 connected to the mouthpiece 9 are connected to the intake pipe 10 in one breathing pipe 14.
Is a single pipe having a double pipe structure surrounded by an exhaust pipe 4. With such a double-tube structure, the semi-closed breathing apparatus 1 can be easily attached and detached, and the external appearance of the entire apparatus is not damaged and the configuration of the entire apparatus can be simplified. Further, in the respiratory pipe 14, by using a double pipe structure in which the inner passage is the intake pipe 10, even if the exhaust pipe 4 is damaged by external force or the like, damage on the intake pipe 10 side can be prevented. It is possible to secure it.

The canister 5 is connected to the breathing bag 3 and the breathing gas cylinder 7, the exhaust pipe 15 is connected to an intake port 19 provided on one side thereof, and the above-mentioned intake pipe 10 is connected to the exhaust port 21. Have been. Also, in the canister 5,
An adsorbent cartridge 16 filled with a carbon dioxide adsorbent is housed therein, and an inflow passage 5a for air is formed on one side of the canister, and an outflow passage 5b is formed on the other side.

The canister 5 is provided with a valve 26 for preventing the adsorbent cartridge 16 from being closed when the adsorbent cartridge 16 is forgotten to be closed.

The mouthpiece 9 has an intake valve 11 and an exhaust valve 1.
The intake valve 11 and the exhaust valve 13 are check valves, respectively. In the case of intake, only the intake valve 11 is opened, and in the case of exhaust, only the exhaust valve 13 is opened.
The exhaust valve 13 is an on / off valve by a diaphragm 33.

Further, the casing 31 of the mouthpiece 9 is provided with a drain valve 35 for discharging water that has entered the casing. The drain valve 35 includes a drain valve body that sits on the drain port and closes the drain port and a coil spring that biases the valve body, and presses the valve body against the biasing force of the coil spring. This opens the drain.

A demant supply valve 34 is provided in the mouthpiece 9 to supply respiratory gas from a respiratory gas cylinder in accordance with the internal pressure.

In the breathing bag 3, the bag body 29 is formed of an elastic material such as rubber, so that the breathing air flows in and out.
It expands and contracts in the direction indicated by arrow A in FIG. Inside the bag body 29, a mesh member 51 (described later) for preventing the breathing bag from being fixed is arranged to prevent the inside of the bag body 29 from being fixed to each other.

On one side of the bag body 29, there is provided a valve unit 30 for discharging the respiratory gas in the bag body 29. The valve unit 30 is configured such that the bag body 29 expands to accumulate a predetermined amount of respiratory gas. In this case, the respiratory air is discharged.

As shown in FIG. 7, the breathing bag 3 is provided integrally with a buoyancy control device (BCD) 41. Breathing bag 3
Is provided integrally with the buoyancy adjusting device 41, mounting is easy and the entire configuration can be simplified. The bag main body 29 has a neck hole 4 for inserting a wearer's neck substantially in the center thereof.
3 is formed, and the breathing bag 3 is arranged around the wearer's neck. However, the breathing bag 3 is not arranged in a continuous ring like a floating ring. And is stopped by a locking member 44.

The buoyancy control device 41 includes a bag body 29 of the breathing bag 3 from around the neck to the front, and is configured to mount the breathing gas cylinder 7 and the canister 5 on the back of the wearer. I have.

Next, the breathing bag 3 according to the present invention will be described in more detail.

As shown in FIG. 1 and FIG.
Is formed in a bag shape by superposing the front member 29A and the back member 29B and welding the outer periphery thereof. Then, the front member 29
Between the A and the back member 29B, a net-like fixing prevention member 51 whose outer shape is slightly smaller than those of the front and back members is inserted, and the front member 29A and the back member 29B are overlapped. Only the outer peripheral portion is welded to form a bag.

That is, the fixing prevention member 51 is disposed over the entire bag body 29, and in the present embodiment, is a plate-shaped resin member formed in a net shape. With such a sticking prevention member 51, the front member 29A and the back member 29B are formed.
Are prevented from contacting each other and sticking or sticking to each other, thereby preventing the breathing bag 3 from sticking and increasing the respiratory resistance. It is possible to prevent the capacity from decreasing.

Further, the sticking prevention member 51 is made of a different material from the inner wall of the bag body, and the inside of the body and the sticking prevention member of another material are interposed. Prevents them from overlapping and sticking together.
In other words, when the same material overlaps, it is easy to adhere to each other, but when it comes into contact with a member of another material, it is difficult to adhere.

The front member 29A and the back member 29B are provided with a coating tank 53 in which the surfaces (inner surfaces) facing each other are coated with an airtight material, and the coating material is not particularly limited. For example, urethane resin is used.

Further, by arranging the sticking prevention member 51 on the entire inside of the breathing bag, the rigidity of the breathing bag as a whole is enhanced, and the shape and the bending of the breathing bag can be prevented.

In particular, by using a resin material for the adhesion preventing member 51, rust does not occur, and
Even when the breathing bag 3 is attached to the body together with the buoyancy adjusting device 41, the breathing bag 3 has a predetermined elasticity, so that the breathing bag 3 easily fits the body.

The fabric of the main body 29 of the breathing bag 3 is coated on the inside thereof, so that it is not particularly limited, and various materials can be used. A material having excellent printability can be used. In particular, the same material as the buoyancy adjusting device 41 can be used in consideration of the design of the entire buoyancy adjusting device 41. For example, in the present embodiment, the buoyancy adjusting device 4
Since the same nylon fabric as that of No. 1 can be used, a unified design can be provided.

Furthermore, since various composite materials, nylon fabrics, and the like can be used as the material of the breathing bag 3, the strength of the breathing bag 3 can be increased. In particular, when nylon is used, unlike a urethane resin or the like, it is possible to provide a breathing bag that is resistant to tearing even when scratched and has excellent durability.

At the time of manufacturing the breathing bag 3, as shown in FIG.
A, the back member 29B, and the sticking prevention member 51,
These three sheets are stacked, and the front member 29A and the back member 2 are kept as they are.
The outer peripheral portion with 9B is welded to produce a bag. In the case of welding, since the thickness of the adhesion preventing member 51 is thin, the front member 2
When welding the 9A and the back member 29B, the outer peripheral portion is not substantially wrinkled, and the welding can be performed in a state where the 9A and the back member 29B are securely adhered to each other, so that the airtightness of the welded portion can be sufficiently ensured.
Further, since a net-like member or a thin plate is used as the sticking prevention member 51, it is light in weight and easy to handle during manufacture.

By forming such an outer peripheral portion in a bag shape by welding, unlike the case of integrally molding by blow molding or the like, a molding die is not required and the production can be performed at low cost.

The operation of the breathing bag according to the present embodiment will be described with reference to FIGS.

When the semi-closed breathing apparatus 1 is used, the breathing bag 3 is in a contracted state or collapsed due to inflow of seawater or slimming generated inside the bag body due to moisture of breathing air. In the case where the bag body is in the closed state, the insides of the bag bodies made of the same material are in close contact with each other and are easily fixed.

However, as shown in FIG. 3, in the breathing bag 3 according to the present embodiment, the front member 29A and the back member 29B do not come into direct contact with the mesh member 51. As described above, since the same members do not come into direct contact with each other, they do not overlap and adhere.

Further, since the mesh member is used, the structure shown in FIG.
In the contracted state shown in FIG. 4, a ventilation path through which gas passes through the stitches is secured as shown in FIG.

In particular, the connection port 45 serving as a gas inflow / outflow path
Around the bag, the bag body 29 is not fixed and the flow of the respiratory gas in the connection port 45 is not blocked, and the gas passage can be secured through the stitches even when the bag body contracts.

The present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present invention.

For example, the sticking prevention member 51 is not limited to a net-like member, and may be a simple plate-like resin member or cloth, as shown in FIG. May be a plate-shaped member or the like in which the above holes are formed.

When an anti-sticking member is used in the buoyancy control device in the same manner as in the breathing bag, the buoyancy control device can easily enter and release air.

[0050]

According to the first aspect of the present invention, in the main body of the breathing bag, a sticking prevention member formed of a material different from the inside of the main body in a plate shape is disposed on the whole or a part thereof. Therefore, even when the breathing bag is in a contracted state, the insides of the breathing bag main body are prevented from overlapping and sticking to each other.

In particular, by preventing such sticking, the effective capacity of the breathing bag can be ensured.

Further, when manufacturing the breathing bag, even if the outer peripheral portion is welded in a state where such an anti-adhesion member is arranged in the main body, the anti-adhesion member is plate-shaped and thin, so that the outer peripheral portion is wrinkled. Difficult and highly airtight breathing bags can be easily manufactured.

According to the second aspect of the present invention, similar to the first aspect of the present invention, since the net-shaped fixing preventing member is disposed on the whole or a part of the main body of the breathing bag, the breathing bag is provided. When the bag shrinks, it is possible to prevent the bag bodies from overlapping and sticking to each other.

Further, by using a mesh member as the adhesion preventing member, even when the breathing bag is contracted, the mesh can serve as a gas passage and a sufficient breathing passage can be secured.

According to the third aspect of the present invention, since the breathing bag is manufactured by laminating the dough and welding the outer periphery, a breathing bag can be easily manufactured at low cost without using a mold.

[0056]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a breathing bag according to an embodiment of the present invention.

FIG. 2 is a sectional view of the breathing bag shown in FIG.

FIG. 3 is a sectional view showing a contracted state of the breathing bag shown in FIG.

FIG. 4 is a cross-sectional view illustrating the operation of the breathing bag of the semi-closed breathing apparatus shown in FIG.

FIG. 5 is a perspective view showing an anti-sticking material according to a modification of the present invention.

6 is a circuit diagram of a semi-closed breathing apparatus using the breathing bag shown in FIG. 1;

FIG. 7 is a perspective view showing a wearing state of the semi-closed respirator shown in FIG. 6;

FIG. 8 is a perspective view showing a conventional breathing bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Semi-closed respiratory apparatus (circulation type respiratory apparatus) 3 Respiratory bag 29 Main body 41 Buoyancy adjusting device 51 Sticking prevention member

Claims (3)

[Claims] 1. A respiratory bag that is used in a circulating respiratory apparatus that uses respiratory gas by removing carbon dioxide from respiratory gas circulating in a respiratory circuit and that expands and contracts due to inflow and outflow of gas. A breathing bag for a circulating respirator, wherein a plate-shaped anti-sticking member made of a material different from the main body is disposed on the whole or part of the inside of the main body. 2. A respiratory bag that is used in a circulating respiratory apparatus that uses respiratory gas by removing carbon dioxide from respiratory gas circulating in a respiratory circuit, and that expands and contracts due to inflow and outflow of gas. A breathing bag for a recirculating respirator, wherein a net-shaped sticking prevention member is disposed on the whole or a part of the inside of the main body. 3. The circulation type according to claim 1, wherein the main body of the breathing bag is formed by laminating a cloth coated with an airtight material and welding an outer peripheral portion thereof. Breathing bag for breathing apparatus.