JP2002095721A - Pouch for transfusion and its outlet tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch for a transfusion, convenient for fully discharging the contents, transportation or various kinds of handling, and suitable for maintenance of the quality of contents. SOLUTION: Two films of the same size in a nearly rectangular form whose peripheral portions are heat-sealed, one over the other, into a pouch shape are provided with a suspending aperture 13 and the outlet 11 for the contents being located almost diagonally on the pouch. In the film, at least the first layer of nylon, the second layer of polyester coated with aluminum oxide and the third layer of polypropylene are hermetically adhered with glue. The first layer is made stretchable, allowing a notch 20 that forms an inlet for supplemental water to reside in the upper portion of the suspending aperture toward a stretchable direction. The outlet 11 for the contents is injection-molded with polypropylene, leaving thin portion in the wall thickness with a melt flow of not less than 5 g/10 min and not more than 15 g/10 min, which can be folded and taken off by hands.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infusion bag for liquid foods and drops, and more particularly to a bag-shaped heat-resistant and pressure-resistant sealed container called a so-called retort pouch. More specifically, the present invention relates to an infusion bag having a hook hole for inserting a hanging hook at one end of the bag, and a spout at the other end for allowing contents to flow out by gravity.

[0002]

2. Description of the Related Art When a drip or liquid food is administered to a patient at a hospital, a container containing the administered substance is hung on a column, and dropped by gravity into the patient's body via an infusion tube connected to the container. The system to introduce is adopted. In recent years, various disposable plastic containers have been widely used as containers for containing the administered substance, and the above-described retort pouch may be used in some cases. Alternatively, bottle-shaped plastic containers and the like are also widely used. The connection between the plastic container and the infusion tube is generally made by piercing a hollow needle into the container. That is, a hollow needle such as an injection needle is attached to one end of the infusion tube, and the needle is inserted into the plastic container to connect the plastic container and the infusion tube. In another method, a spout of a plastic container and an infusion tube are inserted and connected to both ends of a rubber tube, respectively. In either case, the connection is uncertain, and if any physical force is applied to the connection during administration to the patient, the infusion tube may fall out of the container.

[0003] In addition, plastic containers come in various forms, and are inconvenient for transportation and handling, inconvenient for maintaining the quality of the contents, inconvenient for connection with the infusion tube, or for the contents. Various further improvements are desired, such as those that are inconvenient for complete drainage.

[0004] When a liquid food is administered to a patient by the above-mentioned system, an opening is generally provided at the upper end of a plastic container in order to replenish the patient with water while washing the container and the tube after the administration. So-called water replenishment, in which water flows into the container using the opening as an inlet, is performed. Normally, water replenishment is performed using a simple kitchen utensil such as a kettle. In this case, if the opening at the upper end of the plastic container can be made sufficiently large, the work is easy.

[0005]

Accordingly, the present invention provides
The infusion bag is designed to solve the above-mentioned inconvenience in the infusion bag, and it is an object of the invention to provide an infusion bag convenient for completely draining the contents. In addition, to provide convenient infusion bags for transportation and various handling,
The present invention is directed.

Another object of the present invention is to provide a spout device suitable for the contents spout of an infusion bag as described above.

[0007]

The infusion bag of the present invention has the following configuration to achieve the above object. In other words, it is an infusion bag for administering the filled liquid contents to the patient via an infusion tube, and two substantially rectangular films of the same shape are aligned, and the peripheral portions thereof are bonded together by heat sealing to form a bag. The suspension opening and the content outlet are disposed at substantially diagonal positions of the rectangle.

[0008] The film has a multi-layer structure, at least one of which is stretched, and a cut for forming a water supply port is located at a position above the suspension opening at the time of suspension. And in the stretching direction.

The above film has a multilayer structure, the innermost layer of which is made of polypropylene, and the content outlet is injection-molded with polypropylene having a melt flow of 5 g / 10 min or more and 15 g / 10 min or less. A hollow base having both sides formed with a smooth curved surface so as to be bonded by heat sealing with being sandwiched therebetween, a cylindrical portion protruding from the hollow base, and further protruding from the cylindrical portion The cylindrical portion includes a flat portion and two tabs protruding to both sides from the flat portion. The cylindrical portion has a thin portion extending in the circumferential direction on an outer peripheral surface of an intermediate portion in the axial direction. Preferably, a male screw is formed on the outer peripheral surface of the cylindrical portion between the hollow base and the thin portion.

Further, the polypropylene having a melt flow of 5 g / 10 min or more and 15 g / 10 min or less is most preferably the same material as the polypropylene of the innermost layer of the film.

Further, the spout device for an infusion bag of the present invention comprises:
The following configuration is provided to achieve the above object. That is, a spout device attached to an infusion bag for administering a filled liquid content to a patient via an infusion tube, and injection-molded with polypropylene having a melt flow of 5 g / 10 min or more and 15 g / 10 min or less. A hollow base having both sides formed with a smooth curved surface so as to be bonded by heat sealing between two films forming the infusion bag, and a cylindrical portion formed to project from the hollow base, It is composed of a flat portion protruding further from the cylindrical portion and two tabs protruding to both sides from the flat portion, and the cylindrical portion extends around the outer peripheral surface of the intermediate portion in the axial direction. A thin portion extending in the direction is formed, and a male screw is formed on an outer peripheral surface of the cylindrical portion between the hollow base portion and the thin portion.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing an infusion bag according to the present invention, and shows a state before filling with a liquid food or a drip. Hereinafter, an example in the case of filling a liquid food will be described. Infusion bag (hereinafter referred to as pouch) 10
Is formed by laminating two thin films, and bonding a peripheral portion except one side thereof by heat sealing to form a bag. The film has a substantially rectangular shape as shown in the figure, and one corner (the lower right part in the figure)
Is cut off slightly obliquely, and a spout device 11 is attached to the cut-off oblique side. The spout device 11 has a shape as shown in FIG. 2, and a portion having a streamlined side surface at its end is sandwiched between two films and fixed by heat sealing. The detailed structure of the spout device 11 will be described later.

A portion 12 of the pouch 10 bonded by heat sealing is widened substantially at a diagonal corner of a place where the spout device 11 is attached, and the wide portion is used to suspend an ellipse. An opening 13 is formed. The hanging opening 13 is used for hanging the pouch 10 on a hook when the pouch 10 is hung. The suspension opening 13 and the spout device 11 are arranged substantially diagonally to the pouch 10, and when the pouch 10 is suspended, the spout device 11 is positioned at the lowest position (the bottom portion) of the space in the pouch 10. ). That is, when the pouch 10 containing the liquid food is suspended and administered to the patient,
There is no place where the food stays in the pouch 10, and almost all of the content food can be naturally flown out of the pouch 10 from the spout device 11 by gravity.

The portion where the portion 12 bonded by heat sealing is interrupted is an injection opening 14 for filling the pouch 10 with food. As shown by the two-dot chain line, the pouches 10 are further bonded by heat sealing, and the pouch 10 is sealed as a retort pouch.

The film forming the pouch 10 has a multilayer structure as shown in FIG. Specifically, a first layer 15 of directional nylon having a thickness of about 15 microns (which is biaxially stretched at the time of molding and is easily cut by a shear force acting in the stretching direction) is formed on the outermost layer. A second layer 16 of polyester (about 12 microns thick) coated with aluminum oxide, and a third layer of polypropylene about 70 microns thick
It has a three-layer structure in which a layer 17 is provided. However, 3
The layer structure is an example of a multilayer structure, and may be a four-layer structure having a polyester layer as the outermost layer, or another multilayer structure.

The second coating layer may be a silicon oxide coating layer instead of aluminum oxide. The first layer, the second layer, and the third layer are bonded with an adhesive 18. In order to prevent deterioration and discoloration of the filled food due to oxidation, it is preferable to keep the oxygen permeability of the retort pouch low, and the coating layer is a barrier layer for preventing oxygen permeation. The first layer, the second polyester layer, and the third layer protect the coating layer, thereby preventing a decrease in oxygen permeability.

As shown in FIG. 1, a notch 20 is formed in the heat-sealed portion 12 formed with the opening 13 for hanging and being widened. The position of the notch 20 is higher than the upper end of the suspension opening 13 and lower than the lower end of the portion 21 in which the injection opening 14 is heat-sealed later. The notch 20 is located at this position because the upper end of the pouch 10 is cut off from the notch 20 after the administration of the liquid food to the patient is completed to form a water inlet. As described above, the film of the pouch 10 has the outermost layer of the directional nylon stretched biaxially, and the cuts 20 are formed so as to coincide with one of the stretching directions. Accordingly, the nurse or attendant can cut the upper end of the pouch 10 by hand from the cut 20 without using an instrument such as scissors, and can obtain a sufficiently wide water inlet. In the illustrated example, the width of the pouch 10 is about 12 cm,
The width of the heat-sealed portion 12 in which the suspension opening 13 is formed and widened is about 4 cm, and the width of the food injection opening 14 or the water supply port is about 7 cm. The reason why the width of the water supply port can be made so large is that the suspension opening 13 is arranged at a substantially rectangular corner of the pouch 10. The width of the heat seal portions 12 on both sides is about 1 cm each. The replenishing opening is sufficiently wide enough to easily insert the water into the kettle.

Note that the cut 20 is made only in the widened heat seal portion, but not in the narrow heat seal portion on the opposite side. This is because if inserted into the latter part, there is a possibility that the nurse etc. may cut from either of the cuts. 1
This is because there is a danger of going toward 3. When the cut portion reaches the suspension opening 13, the water replenishment work cannot be performed while the pouch 10 is suspended. However, if the position of the cut is limited to the vicinity of the suspension opening 13, shredding from the opposite side is almost completely avoided. Then, when the opening 13 is cut from the notch near the opening 13, there is almost no possibility that the opening 13 is cut off, and the above-mentioned inconvenience does not occur.

As shown in FIG. 2, the spout device 11 has a streamlined side surface at an end thereof, a portion (hereinafter referred to as a hollow base) 22 sandwiched between two films, and a hollow base 22. Cylindrical part 23, cylindrical part 23 projecting from
From the flat portion 24, and two disc-shaped tabs 25 protruding to both sides from the flat portion 24. As shown in the cross-sectional view of FIG. 4, the internal space 26 of the hollow base 22 is open in the bag of the pouch 10, and the internal space 26 communicates with at least the hollow base 22 and the cylindrical portion 23. Although it is necessary, in the illustrated example, the connection is made to the flat plate portion 24 in order to save material. The spout device 11 is manufactured by injection molding the same material as polypropylene, which is the third layer of the film forming the pouch 10.

The streamlined side surface of the hollow base 22 of the spout device 11 is sandwiched between pouch films, and three ribs 27 project from both side surfaces. The rib 27 functions as a stopper for increasing the fixing strength of the hollow base 22 fixed between the films by heat sealing.

The cylindrical portion 23 of the spout device 11 is formed with a thin portion (hereinafter referred to as a thin portion) 28 formed by cutting the outer peripheral surface of the intermediate portion one round. (The hollow base side is the lower side). A male screw is formed on the outer peripheral surface of the lower substantially half portion 29, and the upper substantially half portion 30 continues to the flat plate portion 24. The inner diameter of the cylindrical portion 23 is about 6.
5 mm and the outer diameter (the root diameter at the male screw forming part) is about 8.5
mm. Therefore, the thickness of the cylindrical portion 23 is about 1 mm. The thickness of the thin portion 28 is about 0.2
mm. As shown in FIG. 4, the cross-sectional shape of the concave portion forming the thin portion 28 is such that the end surface of the lower portion 29 is substantially orthogonal to the axis, and the end surface of the upper portion 30 is It has a substantially V-shape tilted by about 30 degrees with respect to the end face.

The flat plate portion 24 of the spout device 11 is a mounting portion for two disk-shaped tabs 25 which are pinched when the upper portion 30 of the cylindrical portion 23 is cut off by the thin portion 28. The two disc-shaped tabs 25 are shaped so that they can be easily twisted by being picked with the thumb and the forefinger.

The lower part 29 of the cylindrical part 23 is connected to a joint member 31 as shown in FIG. 5 after the upper part 30 is cut off. The joint member 31 includes an infusion tube 32
A tubular insertion portion 33 fixed to one end of the cylindrical portion 23 and inserted into the lower portion 29 of the cylindrical portion 23, and a cap nut member 34 fitted around the insertion portion 33. I have. While the infusion tube 32 is flexible, the tubular insertion portion 33 is rigid and has a retaining tab 35 formed so that it can be held by a finger during insertion and removal. A male screw is formed on the outer peripheral surface of the lower portion 29 of the cylindrical portion 23 so that the cap nut member 34 is tightened after the tubular insertion portion 33 is inserted. In this embodiment, a double thread is used.

The ordinary polypropylene used for injection molding has a melt flow of about 20 to 30 g / 10 min so that the material can be flowed well when injected into a mold.
It has relatively low viscosity. However, when the spout device 11 is formed into such dimensions with polypropylene having such physical properties, the spout device becomes very hard and almost impossible for a woman such as a nurse to break off. . In addition, if the tool is forcibly folded using a tool or the like, sharp burrs remain on the cut surface, which is dangerous for manual work such as connection of a tube.

In the spout device 11 according to the present invention, the inner diameter of the cylindrical portion 23 is set to the above-mentioned size (about 6.5 mm), which is, as shown in FIG.
This is because the tubular insertion portion 33 having a diameter substantially the same as that of the pouch 10 is inserted even in the cylindrical portion 23 having such an inner diameter as the third layer of the film forming the pouch 10. If it is injection-molded with a material, and if it has a sufficiently thinned portion, even a woman such as a nurse can easily cut it off by hand, and furthermore, a cylindrical portion other than the thin portion 28 The flat portion 23 can be reliably cut off at the thin portion 28 without being crushed. However, if the thickness of the thin portion 28 is smaller than 0.2 mm, pinholes may be formed there due to sink marks at the time of curing. Therefore, if the thickness is further reduced, the sealing degree in the pouch is impaired. There is fear. The polypropylene of the third layer of the film has a relatively high viscosity with a melt flow of 10 g / 10 min or less. However, a molded article made of such polypropylene has low hardness, and a molded article having the above-mentioned shape is manually formed. It is possible to break off. However, the melt flow is 5
Molding with polypropylene lower than g / 10min
Not only is it not easy to inject into the mold, but even if injection molding is possible, the hardness of the molded body is extremely low, and there is a fear that the cylindrical portion 23 may be broken when twisted for breaking. . As a result, it is recognized that the melt flow of the polypropylene for injection molding the spout device 11 is 5 g / 10 min or more and 15 g / 10 min or less as an appropriate range.

One pouch 10 is constructed as described above.
The administration of a liquid food to a patient using a sealed retort pouch filled with liquid food of a serving is performed as follows. First, one end of the tube without the joint is fixed in the oral cavity of the patient. The retort pouch is pre-heated depending on the food content. The pouch 10 is held with the spout device 11 above the pouch 10, and the upper portion 30 of the cylindrical portion 23 is manually broken off by pinching and twisting the disc-shaped tab 25. With the spout device 11 facing upward, the joint member 31 of the tube 32 is connected to the lower portion 29 of the cylindrical portion 23. Pouch 10 in this state
Is turned upside down, the liquid food flows into the tube from inside the pouch. When the hanging opening 13 of the pouch 10 is hooked on the hook of the drip support, the liquid food in the pouch naturally flows down the tube 32 according to gravity and is administered to the body through the mouth of the patient.

The pouch 10 hooked on the hook of the drip support is suspended obliquely as the pouch 10 so that the hanging opening 13 and the spouting device 11 are in a vertical line. Comes to the lowest position, so that the liquid food in the pouch flows out almost completely. Then, when the liquid food in the pouch flows out almost completely, the upper end of the pouch 10 is cut by hand from the cut 20 for rehydration to form a rehydration port. While the pouch 10 is suspended, water can be supplied into the pouch with a kettle or the like from the water supply port.

If the spout device 11 is colored in an appropriate color, the joint member 31 of the tube 32 is also colored in the same color, and the pouch 10 and the infusion tube 32 are handled as a set. The nurse who handles this can confirm that the connection is correct by matching the color of the spout device 11 with the color of the joint member 31 of the tube 32, and mistakenly connects another pouch to the tube. Danger can be avoided.

In the above-mentioned example, a pouch for an oral liquid diet was described. For example, in the case of a drip, it is administered into a patient's blood vessel using a tube with an injection needle attached. If possible, it can be applied to infusion.

[0030]

As described above, according to the infusion bag of the present invention, it can be formed into a substantially rectangular bag, so that a large number of bags can be compactly packed and suitable for transportation. Even so, since the suspension opening and the spout are arranged diagonally, the contents of the bag can be flowed out almost completely without stagnation as compared with those in which they are arranged on the center line.

Since the hanging opening is formed at the corner of the substantially rectangular bag, a wide water inlet can be provided on the side of the hanging opening. Moreover, the water inlet is stretched on the nylon layer of the film, and is cut along the stretching direction, so that it can be easily cut and formed.

Since the film of the infusion bag has an aluminum oxide or silicon oxide coating layer in the middle layer, the coating layer is protected by the layers on both sides of the film, so that the oxygen permeability is kept low and the contents are reduced. Quality retention ability is kept high.

Further, when the spouting device is molded with polypropylene used for ordinary injection molding, the spouting device becomes so hard that it cannot be cut off by hand.
Using a melt flow of 5 g / 10 min or more and 15 g / 10 min or less, and molded into a shape suitable for folding, even weak women such as nurses can cut by hand, The infusion bag and the tube can be reliably connected by simple connection using screws.

In particular, if the polypropylene of the spout device is the same as the polypropylene of the third layer of the film, the best adhesiveness by heat sealing between the spout device and the film can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of an infusion bag according to the present invention.

FIG. 2 is a perspective view showing one embodiment of an infusion device for an infusion bag according to the present invention.

FIG. 3 is an enlarged cross-sectional view illustrating a multilayer structure of a film forming the infusion bag of FIG.

FIG. 4 is a sectional view of the spout device of FIG. 2;

FIG. 5 shows a tube connected to the spout device of FIG. 2,
It is a perspective view which shows the joint member attached to the one end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Infusion bag (pouch) 11 Spout apparatus 12 Heat seal part 13 Hanging opening 14 Injection opening 15 1st layer 16 2nd layer 17 3rd layer 18 Adhesive 19 Coating layer 20 Cut 21 Injection opening Part 22 Hollow base part 23 Cylindrical part 24 Flat part 25 Disc-shaped tab 26 Internal space 27 Rib 28 Thin part 29 Lower part 30 Upper part 31 Joint member 32 Tube 33 Tubular insertion part 34 Cap nut member 35 Holding tab

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A61J 1/00 335A (72) Inventor Satoshi Masumoto 6-5-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Myers Squibb Co., Ltd. (72) Inventor Koji Takada 1-4-16 Nihonbashi Bakurocho, Chuo-ku, Tokyo Inside Fujimori Industry Co., Ltd. (72) Inventor Hiroshi Matsumoto 1-4-16 Nihonbashi Bakurocho, Chuo-ku, Tokyo Fujimori Kogyo (72) Inventor Atsushi Takematsu 1-4-16-1 Nibashi-bakucho, Chuo-ku, Tokyo F-term within Fujimori Industries Co., Ltd. 3E064 AA05 BA17 BA30 BA36 BA54 BA60 BB03 BC08 BC18 EA12 EA30 FA04 GA04 HL05 HM01 HN05 HN65 HS07

Claims (5)

[Claims] 1. An infusion bag for administering a filled liquid content to a patient through an infusion tube, wherein two substantially rectangular films of the same shape are aligned, and the periphery thereof is bonded by heat sealing. An infusion bag formed in a bag shape, wherein a hanging opening and a content outlet are arranged at positions substantially diagonal to the rectangle. 2. The film has a multi-layered structure, at least one of which is stretched, and a cut for forming a water supply port is located above the hanging opening at the time of hanging. 2. The infusion bag according to claim 1, wherein the bag is placed in the position of (1) and in the stretching direction. 3. The film has a multilayer structure, the innermost layer of which is made of polypropylene, and the content outlet is injection-molded with a polypropylene having a melt flow of 5 g / 10 min or more and 15 g / 10 min or less. A hollow base having both sides formed with a smooth curved surface so as to be bonded by heat sealing between the films, a cylindrical portion protruding from the hollow base, and protruding further from the cylindrical portion The cylindrical portion has a thin portion extending in the circumferential direction on an outer peripheral surface of an intermediate portion in the axial direction of the cylindrical portion. The infusion bag according to claim 1, wherein a male screw is formed on an outer peripheral surface of the cylindrical portion between the hollow base and the thin portion. 4. The infusion bag according to claim 3, wherein the polypropylene having a melt flow of 5 g / 10 min or more and 15 g / 10 min or less is the same material as the polypropylene of the innermost layer of the film. 5. A spout device attached to an infusion bag for administering a filled liquid content to a patient via an infusion tube, wherein the polypropylene has a melt flow of 5 g / 10 min or more and 15 g / 10 min or less. A hollow base having both sides formed with smooth curved surfaces to be bonded by heat sealing between two films forming the infusion bag, and a cylindrical shape formed to protrude from the hollow base. A flat portion protruding further from the cylindrical portion, and two tabs protruding to both sides from the flat portion. The cylindrical portion has an outer periphery at an intermediate portion in the axial direction. A thin portion extending in the circumferential direction is formed on the surface, and a male screw is formed on an outer peripheral surface of the cylindrical portion between the hollow base portion and the thin portion. Appliances.