JP3806490B2 - Infusion bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an infusion bag, and more particularly to an infusion bag that does not puncture or break the outer bag that houses the infusion bag.
[0002]
[Prior art]
Conventionally, infusion bags have been heat-sealed at the peripheral edge, and in particular, both side ends have been sealed in the vertical direction with substantially the same width. For this reason, when the infusion bag is folded in half with respect to the horizontal direction, both ends of the bent portion are rounded and sealed to become a rigid portion. In the state of being sealed and set in an outer bag made of film, the two side ends of the two folded portions hit the outer bag to make holes in the outer bag or peel off the seal portion around the outer bag to break the bag. Or the like, which hindered the sealed storage by the outer bag.
[0003]
[Problems to be solved by the invention]
As described above, the conventional infusion bag has a problem in that a hole is formed in the outer bag in which the infusion bag is hermetically stored, or the bag is broken, and the handling is very careful. Therefore, the present invention has been invented for the purpose of providing an infusion bag that can prevent the opening and breakage of the outer bag due to the seal portions on both sides of the infusion bag.
[0004]
[Means for Solving the Problems]
The infusion bag according to the present invention for achieving the above object is an infusion bag formed into a bag shape by a thermoplastic synthetic resin film or sheet as described in claim 1, wherein the infusion bag is in the horizontal direction. When the sheet is folded in half, the positions of the corners on both sides of the bent part are left as non-fused parts, and sealed so that the curved outer shape is not squared inward. It is characterized by forming a part.
[0005]
According to this configuration, when the infusion bag is folded in half with respect to the horizontal direction, the positions that become the side corners of the bent portion remain as non-fused portions. There is a flexible film or sheet itself that is not sealed at the corners on both sides when folded in half, and the inner sealing part of this non-fused part is formed in a non-square curved contour. Therefore, even if the non-fused part touches or folds into the outer bag, the contact with the outer bag by the infusion bag is softened, and the opening and breakage of the outer bag are reliably prevented. The
[0006]
Moreover, 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, and the infusion bag is a medicine storage chamber. It is divided into multiple chambers by a weak seal part formed in the middle in the middle, and when it is bent with reference to the horizontal direction of the weak seal part, the position that becomes the both ends of the bent part is a non-fused part The infusion bag is characterized in that it is sealed so as to have a curved outer shape that is not squared inwardly, and the seal portions at both ends are formed as strong seal portions. When the bag is bent with reference to the weak seal part formed in the horizontal direction, the non-fused part softens the contact with the outer bag at the non-fused part at the corners on both sides of the folded part. The curved outer shape of the inner part of the landing The point Oseru the prevention of apertures or breakage of the outer bag Te soft down an equivalent tactile to the outer bag at Lumpur portion is the same as that of claim 1, wherein.
[0007]
Further, the infusion bag according to claim 2 is characterized in that, among the strong seal portions at both ends, the connection portion with respect to the weak seal portion is sealed in an arc-shaped bulging shape as described in claim 3. In this case, when the weak seal part is peeled off and the drug storage chambers are communicated with each other, the strong seal part near the weak seal part has an enhanced shape so as not to cause a bag breaking phenomenon or a pinhole phenomenon. It is very convenient because it reinforces the periphery when the parts are separated and communicated.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
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 whole infusion bag, which is formed of a thermoplastic resin film or sheet. In the infusion bag 1, two superposed films or sheets are integrally sealed as strong seal portions at both end portions 11, 11 ′, upper end portion 12 and lower end portion 13. When the infusion bag 1 in the figure is folded in half with respect to the horizontal direction XX, the positions that become both side ends of the bent portion remain as the non-fused portions 14 and 14. Seals are formed so as to have curved outer shapes R and R that are not squared inward from the heat-sealed portions 14 and 14, and seal portions on both side ends 11 and 11 'are formed.
[0009]
As shown in FIG. 1, the infusion bag 1 includes a single medicine storage unit 15 as shown in FIG. 1, and a plurality of drug storage chambers, for example, two drug material storage chambers 15 and 16, as shown in FIG. What was divided by the weak seal part 17 for division so that it may be formed may be used.
In the case of such an embodiment, when the weak seal portion 17 is folded in half with respect to the horizontal direction XX (see FIG. 3), the positions of the corners on both sides of the folded portion are not set. The heat sealing portions 14 and 14 are left and sealed so as to have curved outer shapes R and R which are not squared inwardly, and the seal portions of both side ends 11 and 11 'are formed as strong seal portions. .
[0010]
The infusion bag 1 as described above is folded and folded and sealed in an outer bag 20 formed of a synthetic resin film, and the positions corresponding to the corners on both sides of the bent portion are not fused. Therefore, the non-fused portions 14 and 14 are flexible films or sheets themselves that are not sealed at both corners when folded in half, and moreover than the non-fused portions 14 and 14. Since the inner seal portion is formed in a curved outer shape R, R, even if the non-fused portion 14 touches or folds into the outer bag 20, the inner bag is not contacted by the infusion bag. The touch is softened, and the opening and breakage of the outer bag are reliably prevented.
[0011]
In addition, as the weak seal portion 17 that becomes the boundary between the medicine storage chambers 15 and 16, a tape for weakening the seal between the films or between the sheets is used in addition to weakly sealing the degree of integral fusion between the films or sheets. Sometimes it is sandwiched and sealed.
Further, in practice, the connection portion 18 to the weak seal portion 17 among the strong seal portions at the both ends 11, 11 ′ may be sealed in a shape bulging on the arc as shown in FIG. In order to reinforce the peripheral portion when the medicine storage chambers are communicated with each other by peeling off the weak seal portion 17 so that the strong seal portion near the weak seal portion 17 does not cause a bag breaking phenomenon or a pinhole phenomenon. It is useful for.
[0012]
In practice, the thermoplastic synthetic resin film or sheet constituting the infusion bag is preferably not only a single layer of polyolefin resin but also a multilayer, particularly a multilayer.
[0013]
【The invention's effect】
According to the infusion bag of the present invention, even if the infusion bag is folded in half with respect to the horizontal direction and sealed and stored in the outer bag, the positions of the corners on both sides of the folded portion are not Since the flexible film or sheet that is not stiff is left as the heat-sealed portion, the contact with the outer bag is softened, and there is no possibility that the outer bag is pierced or broken. In addition, since it is sealed so that it has a curved outer shape that is not squared inward from the non-heat-sealed part, even if the non-heat-fused part is turned over, the contact with the outer bag is softened, and the outer bag This is convenient for preventing the opening and bag breakage.
[Brief description of the drawings]
FIG. 1 is a front view when there is one medicine storage chamber.
FIG. 2 is a front view when there are two medicine storage rooms.
FIG. 3 is a front view showing a state in which the bag is folded in half 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 edge part 14, 14 Non-fusion part R, R The seal part 17 by the infusion curve external shape of this invention Weak seal part

Claims (3)

An infusion bag formed into a bag shape by a thermoplastic synthetic resin film or sheet,
When the infusion bag is folded in half with respect to the horizontal direction, it is sealed so that it has a curved outer shape that is not squared inward, leaving the positions of the corners on both sides as non-fused parts. An infusion bag characterized in that seal portions on both ends are formed. An infusion bag formed into a bag shape by a thermoplastic resin film or sheet,
The infusion bag is divided into a plurality of chambers by a weak seal part formed in the horizontal direction in the middle of the medicine storage chamber, and when folded on the basis of the horizontal direction of the weak seal part, The infusion bag is characterized in that the seal portion at both ends is formed as a strong seal portion by sealing so as to have a curved outer shape that is not squared inward, leaving the position as a non-fused portion. 3. The infusion bag according to claim 2, wherein, of the strong seal portions at both side ends, the connection portion to the weak seal portion is sealed in an arcuate shape.

Images