JPH10314272A - Transfusion bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfusion bag such that formation of a hole in its outer bag and breaking of the bag, which result from sealed parts at ends on both sides of the transfusion bag, can be prevented. SOLUTION: When a transfusion bag 1 made of a thermoplastic synthetic resin film or sheet is folded in two with respect to its horizontal direction X-X, the positions of its curved parts serving as corners on both sides are left intact as unfused parts 14, 14, and its parts inside the unfused parts 14, 14 are sealed to form round curved outer forms R, R, to form sealed parts at ends 11, 11' on both sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an infusion bag,
More specifically, the present invention relates to an infusion bag that does not pierce or break the outer bag that houses the infusion bag.

[0002]

2. Description of the Related Art Conventionally, an infusion bag has been heat-sealed at its peripheral edge, and in particular, both side ends have substantially the same width and are vertically sealed. Therefore, when the infusion bag is folded in two on the basis of the horizontal direction, both sides of the bent portion are squared and sealed and become a rigid part. In the state of being sealed and set in the outer bag made of film, the two corners of the two-folded portion hit the outer bag to make a hole in the outer bag or to peel off the seal around the outer bag to break the bag. And the sealed storage by the outer bag was hindered.

[0003]

As described above, in the conventional infusion bag, there is a problem that the outer bag in which the infusion bag is hermetically housed has a problem that a hole is formed or the outer bag is broken. . Therefore, an object of the present invention is to provide an infusion bag capable of preventing the outer bag from being opened and broken due to the sealing portions at both ends of the infusion bag.

[0004]

According to a first aspect of the present invention, there is provided an infusion bag formed of a thermoplastic synthetic resin film or sheet into a bag. When the infusion bag is folded in two on the basis of the horizontal direction, a curved outer shape that is not angled inward from the left and right sides of the bent portion is left as a non-fused portion. It is characterized in that the seal portions are formed at both side ends by sealing as much as possible.

[0005] According to this configuration, when the infusion bag is folded in two with respect to the horizontal direction, the positions at both corners of the bent portion are left as non-fused portions. The unsealed flexible film or sheet itself is present at the corners on both sides when the fused part is folded in two, and the seal part inside the non-fused part is formed into a curved profile without squareness. The infusion bag softens the contact with the outer bag even if the non-fused part touches or breaks in the outer bag. Is prevented.

Further, in the infusion bag having a plurality of medicine storage chambers, as described in claim 2, the infusion bag is formed in a bag shape by a thermoplastic resin film or sheet. The middle of the storage room is divided into a plurality of chambers by a weak seal portion formed in the horizontal direction, and when the weak seal portion is bent based on the horizontal direction, the positions at both ends of the bent portion are not changed. It is configured as an infusion bag, characterized in that it is sealed so as to have a curved outer shape that is not squared inward, leaving a sealed portion at both ends as a strong seal portion. When the infusion bag is bent on the basis of the weak seal portion formed in the horizontal direction as a reference, the contact with the outer bag is softened at the non-fused portion at the position on both sides of the bent portion, Moreover, the inner corners of the non-fused part are irregular The point Oseru an equivalent tactile prevention of apertures or breakage of the outer bag Te straw up of the outer bag at the seal portion contoured is the same as that of claim 1, wherein.

[0007] Further, in the infusion bag according to the second aspect, as in the third aspect, out of the strong seal portions on both sides,
When the connecting portion to the weak seal portion is sealed in an arc-shaped bulging shape, when the weak seal portion is peeled off and the medicine storage chambers are communicated with each other, the strong seal near the weak seal portion is formed. It has a shape that is strengthened so as not to cause a bag break phenomenon or a pinhole phenomenon in the part, and achieves reinforcement of the peripheral part when the weak seal part is peeled off and connected,
It is very convenient.

[0008]

Next, embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a front view of an infusion bag of the present invention, and 1 shows the entire infusion bag, which is formed of a thermoplastic resin film or sheet. The infusion bag 1 comprises two superimposed films or sheets on both sides 11, 11 '.
And the upper end portion 12 and the lower end portion 13 are integrally sealed as a strong seal portion. When the infusion bag 1 in the figure is folded in two on the basis of the horizontal direction X-X, the positions at both ends of the bent portion are left as non-fused portions 14 and 14 as they are. Seals are formed at both ends 11, 11 'by sealing so as to have a curved outer shape R, R which is not squared inward from the heat-fused portions 14, 14.

As shown in FIG. 1, the infusion bag 1 has a single medicine storage section 15 as shown in FIG. 1, and a plurality of medicine storage chambers, for example, two medicine storage chambers 15 as shown in FIG. , 16 formed by the weak sealing portion 17 for partitioning. In the case of such an embodiment, when the weak seal portion 17 is folded in two on the basis of the horizontal direction XX (see FIG. 3), the positions of the corner portions on both sides of the bent portion are not changed. The heat-sealed portions 14 are left as seals so as to form curved outer shapes R, R that are not angled inward from the heat-sealed portions 14, 14 to form seal portions at both side ends 11, 11 'as strong seal portions. .

The infusion bag 1 as described above is folded in two in an outer bag 20 formed of a synthetic resin film and hermetically accommodated. The positions of both corners of the bent portion are defined as non-fused portions. 14 and 14, the non-fused portion 1
The unsealed flexible films or sheets are present at the corners on both sides when the sheet is folded in two. Since it is formed in the outer shape R, R, the non-fused portion 14
Even if the outer bag 20 comes into contact with or is folded, the contact of the infusion bag with the outer bag is softened, so that the opening or breaking of the outer bag is reliably prevented.

The weak seal portion 17 serving as a boundary between the medicine storage chambers 15 and 16 not only seals the degree of fusion of the films or sheets together but also weakens the seal between the films or sheets in practice. In some cases, the tape is sandwiched between the seals. Further, in practice, both ends 11,
In the strong seal portion 11 ', the connecting portion 18 to the weak seal portion 17 may be sealed in a shape protruding on an arc as shown in FIG. This is very useful for reinforcing the peripheral portion when the medicine storage chambers communicate with each other by peeling the weak seal portion 17 so as not to cause a bag breakage phenomenon or a pinhole phenomenon in the seal portion.

In practice, the thermoplastic synthetic resin film or sheet constituting the infusion bag is preferably a single layer of a polyolefin resin, or a multilayer, particularly a multilayer.

[0013]

According to the infusion bag of the present invention, the infusion bag is folded in two with respect to the horizontal direction.
Even if it is sealed and stored in the outer bag, the flexible film or sheet which does not become rigid at the corners on both sides of the bent portion is used as a non-heat-fused part, so that the contact with the outer bag is softened. ,
There is no danger of puncturing or breaking the outer bag. In addition, since it is sealed so that it has a curved outer shape that is not squared inward than the non-heat-fused part, even if the non-heat-fused part is turned up, it softens the contact with the outer bag, This is convenient in preventing the opening of the hole and the breakage of the bag.

[Brief description of the drawings]

FIG. 1 is a front view in the case where the number of medicine storage rooms is one.

FIG. 2 is a front view in a case where there are two medicine storage rooms.

FIG. 3 is a front view showing a state of being folded in two and stored in an outer bag.

FIG. 4 is a front view of a modified embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infusion bag 11, 11 'Both end parts 14, 14 Non-fusion part R, R Seal part by the infusion curve outer shape of this invention 17 Weak seal part

Claims (3)

[Claims] 1. An infusion bag formed of a thermoplastic synthetic resin film or sheet into a bag shape, wherein when the infusion bag is folded in two with respect to its horizontal direction, both corners of a bent portion are formed. The infusion bag is characterized in that sealing positions are formed at both ends by sealing the outer shape so as to form a curved outer shape that is not angled inward, while leaving a position as a non-fused portion. 2. An infusion bag formed of a thermoplastic resin film or sheet in the form of a bag, wherein the infusion bag is divided into a plurality of chambers by a weak seal portion formed in the middle of a medicine storage chamber in a horizontal direction, When the weak seal portion is bent on the basis of the horizontal direction, sealing is performed so that the positions that are both end portions of the bent portion are left as non-fused portions and a curved outer shape is not formed inward from this. An infusion bag, wherein the sealing portions at both ends are formed as strong sealing portions. 3. The infusion bag according to claim 2, wherein, of the strong seal portions on both side ends, a connection portion to the weak seal portion is sealed in an arc-shaped bulging shape.