JP2000168806A - Bag-like container having reverse flow preventive mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the reverse flow of a content from a bag-like container having a mouth means and prevent air from entering therefrom, and to correctly measure or analyze a stored substance such as a sampled expiration by providing a tubular mouth means on a mouth part of a bag-like container to sample the expiration, etc., and providing a reverse flow preventive means on the mouth means. SOLUTION: An expiration bag 1 for an expiration inspection system for medical use and for inspecting the exercise physiology is formed in a bag-shape of a packaging film which is free from any change of outside/inside air and high in sealability, and an examinee can easily exhale the expiration. the expiration inspection system is provided with a tubular mouth means 2 to be easily connected to an analyzer, and a cap is fitted thereto. A reverse flow preventive means is provided on the mouth means 2. For example, a flap-like check valve 4 which is elastically deformed like a rubber is arranged in the mouth means 2, and the check valve 4 is closely attached to an inner end of a cylindrical valve seat 5 which is normally and elastically inserted in the mouth means 2. The reverse flow from the inside of the container to the outside thereof is prevented, and the check valve 4 is inwardly deviated and opened with the blow-in pressure in storing the expiration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-shaped container provided with a mouth means for inflow or outflow of a stored object, and more particularly to a backflow of the stored item to the outside of the container or a container of an unintended object. The present invention relates to a bag-like container provided with a backflow prevention mechanism configured to prevent inflow from flowing inward.

[0002]

2. Description of the Related Art Heretofore, a bag-like form is made of a film wrapping material having a high sealing property and having no exchange of inside and outside air, and provided with a tubular mouth means for inserting a storage material such as expiration into the mouth. Containers are known, and are used for breath collection bags for use in medical breath test systems, breath collection bags for exercise physiology tests, and the like. In such a breath collection bag, a cap is fitted on the mouth means and the mouth is closed, so that when the breath is collected or when the cap is removed for attachment to a breath analyzer, a part of the collected breath leaks. There is a possibility that accurate measurement or analysis may not be possible due to the intrusion or outside air.

[0003]

SUMMARY OF THE INVENTION The present invention prevents backflow of stored goods from a bag-like container having a mouth means and prevents invasion of outside air, and enables accurate measurement or analysis of collected goods such as exhaled breath. The task is to

[0004]

Means for Solving the Problems The means adopted by the present invention to solve the above-mentioned problems is a bag-like container for collecting exhaled air and the like, which has a tubular mouth means at the mouth thereof. Wherein the mouth means is provided with a backflow prevention means.

The backflow prevention means is disposed in a flap-like check valve having rubber elasticity or in a tubular mouth means so as to be movable in the axial direction, and is normally urged in the valve closing direction. It is characterized by comprising a valve body.

The backflow preventing means comprises a hole formed in a cylindrical body which extends inward and is closed at the inner end, which is continuous with the mouth means, and closes the hole by pressing the side surface of the bag-like container with a finger. It is characterized by doing so.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below. With reference to the drawings, (1) is a medical breath test system or a breath bag for exercise physiology test to which the present invention is applied. It has a tubular mouth means (2) which is formed into a form, allows the subject to easily inhale breath, and is easily connected to the analyzer. Mouth means
(2) is fitted with a cap (3). Breath bag (1)
Is folded and held flat when not in use,
It is preferable that the volume can be easily expanded when inhaling the exhaled air, and the exhaled air can be easily extruded without local deformation when crushed for exhaled air extraction. Note that the present invention is not limited to such an expiration bag, and is not particularly limited as long as it is a bag-shaped container into which stored items can be inserted via a mouth unit. Further, the storage items may be any of gas, liquid and solid.

The present invention is characterized in that in the bag-shaped container having the mouth means, the mouth means (2) is provided with a backflow prevention means. As the backflow prevention means, the one having a check valve structure arranged in the mouth means (2) is optimal, but is not limited to this. Any material can be used as long as it can prevent the stored items from leaking through the mouth means, or can prevent outside air from entering through the mouth. Therefore, in this specification, the term "backflow" is used to mean both the outflow of stored items from the inside of the container and the intrusion of outside air into the container from the outside.

FIGS. 2 to 7 show some examples of the backflow preventing means provided in the mouth means (2). FIG. 2 shows an arrangement in which a rubber-like elastically deformable flap-shaped check valve (4) is arranged in a tubular mouth means (2), and the check valve (4) is always elastically held in the mouth means (2). It is in close contact with the inner end of the cylindrical valve seat (5) inserted inside to prevent backflow from the inside of the container to the outside.
(4) is biased inward to open the valve. FIG. 3 coincides with FIG. 2 in that it is a flap-shaped check valve (4) similar to FIG. 2, and the valve seat has a flange (6) protruding into the mouth means (2).
Is different. FIG. 4 shows a rubber stopper (8) having a slit (7), which is opened by connecting the slit (7) to the inside of the container by elastic deformation of the rubber stopper (8). FIGS. 5 to 7 show that a check valve body (9) which is movable in the axial direction in a mouth means (2) is normally urged to a valve closing position, and the check valve body (9) is moved. The opening and closing is performed by bringing into contact with and separating from a flange-shaped valve seat (10) protruding from the mouth means (2). In the structure shown in FIG. 5, an opening (12) is formed in the check valve body (9) urged in the valve closing direction by the spring (11), and the check valve body (9) is moved in the axial direction. The opening (12) is opened and closed, and the one shown in FIG. 6 has a check valve body formed of a ball valve and is urged in a valve closing direction by a spring (11). FIG. 7 shows a non-return valve body (9) having elastically deformable leg pieces (13) formed thereon and biased in a valve closing direction.

As shown in FIG. 8, when the breath bag (1) is connected to the analyzer (14) for analysis of the collected breath, a connecting rod (15) extending from the analyzer (14) is connected to the mouth. means
(2) Insert into flap check valve (4), rubber stopper (8)
Alternatively, the valve is opened by operating a check valve such as a check valve (9).
The exhaled breath in the exhalation bag is moved to the analyzer. At this time, even if the cap (3) is removed, since the backflow from the breath bag is prevented by the backflow prevention means, there is no possibility that the breath will leak.

FIGS. 9 to 13 show another embodiment of the present invention. Referring to the drawings, a tubular body (20) extending slightly inward is connected to a tubular mouth means (2), and the tubular body (2) is connected to the tubular body (2).
A hole (21) is formed in the bag (0), and the hole (21) is closed by the side surface of the bag-shaped container (1) to prevent backflow. In order to confirm the deformation position of the bag-shaped container, a mark (22) is provided on the outer surface of the breath bag (1) corresponding to the position of the hole (21). The distal end of the cylindrical body (20) extending inward is closed, and the stored articles inserted from the mouth means (2) enter or exit the container only through the hole (21). In the illustrated embodiment, two holes (21) and two marks (22) are formed at diametrically opposed positions, but it is needless to say that one hole may be provided. Then, as shown in FIGS. 12 and 13, after exhalation is blown into the exhalation bag (1), the portion of the mark (22) is pressed with a finger to deform the side surface of the exhalation bag (1) to form a hole ( 21) is closed, and the cap (3) is fitted while blocking the inside and outside of the breath bag (1). When connecting a breath bag to the analyzer (14), etc., if the cap (3) is first removed and the cap (3) is connected to the analyzer (14), there is a possibility that the collected breath will leak. Disappears.

The breathing bag (1) is preferably a self-supporting bag made of a laminated sheet of, for example, a plastic film and aluminum foil. The laminated sheet constituting the bag is shown in FIG.
Polyester film (16), aluminum foil as shown
(17) Consisting of a four-layer laminated sheet of a stretched nylon film (18) and a polyethylene film (19), the two laminated sheets are bonded by heat welding or bonding at the upper side and both side pieces and sealed to seal the lower surface. Form into an open bag.
The opened lower surface is sealed by joining the folded bottom material sheet in an arc shape. When the upper side of the bag body is joined to the tubular mouth means, it is simultaneously attached and tightly joined. The breath bag (1) is folded flat when not in use,
When exhalation is inhaled, the bottom expands and becomes self-sustaining. The expandability and independence of such a bag are such that the bag can be easily expanded at the time of exhalation and the required amount of expiration can be stored, and when the cap is removed, the shape of the bag can be stored. Since there is no exhalation of the exhaled air, the leakage of the exhaled air collected in combination with the backflow prevention means is prevented, and accurate measurement and analysis are enabled.

In the case of breath collection, it is desirable to provide a slight resistance at the time of insufflation so as to promote abdominal respiration of the subject so that the concentration of the substance to be measured in the breath is accurately displayed. Has the advantage that it also acts as a slight resistance during such blowing.

[0014]

According to the present invention, the stored items stored in the bag-shaped container are prevented from flowing backward and the outside air is prevented from entering, so that the stored items may leak or the outside air may be leaked before the cap is fitted. It is possible to perform accurate measurement and analysis of the stored items without fear of intrusion.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a container according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a backflow prevention unit.

FIG. 3 is a sectional view showing another example.

FIG. 4 is a sectional view showing still another example.

FIG. 5 is a sectional view showing still another example.

FIG. 6 is a sectional view showing still another example.

FIG. 7 is a sectional view showing still another example.

FIG. 8 is a schematic diagram showing a state in which the breath bag according to the present invention is connected to an analyzer.

FIG. 9 is an external perspective view showing another embodiment of the container according to the present invention.

FIG. 10 is a sectional view taken along lines 9A-A 'of FIG. 9;

FIG. 11 is an enlarged perspective view of the essential part with a part cut away.

FIG. 12 is a perspective view of the same container in a backflow preventing state.

FIG. 13 is a sectional view taken along the line B-B 'of FIG. 12;

FIG. 14 is a cross-sectional perspective view of a laminated sheet constituting the expiration bag.

[Explanation of symbols]

 (1) Expiration bag (2) Mouth means (3) Cap (4) Check valve (5) Valve seat (6) Flange (7) Slit (8) Rubber stopper (9) Check valve (10) Valve Seat (11) Spring (12) Open hole (13) Leg piece (14) Analyzer (15) Connecting rod (16) Polyester film (17) Aluminum foil (18) Stretched nylon film (19) Polyethylene film (20) Tube Body (21) Hole (22) Mark

Claims (4)

[Claims] 1. A bag-shaped container for collecting exhaled air and the like, comprising a tubular mouth means at the mouth, and a backflow prevention means provided on the tubular mouth means. Bag-shaped container. 2. A bag-like container according to claim 1, wherein said backflow prevention means comprises a flap-shaped check valve having rubber elasticity. 3. A check valve according to claim 1, wherein said backflow prevention means comprises a check valve disposed movably in an axial direction in said tubular mouth means and normally urged in a valve closing direction. Bag-shaped container. 4. The backflow prevention means comprises a hole formed in a cylindrical body which extends inward continuously from the mouth means and has an inner end closed,
2. A bag-like container according to claim 1, wherein said hole is closed by pressing a side of said bag-like container with a finger.