JPH0675496U - Infusion container stopper - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a stopper for an infusion container, which allows the infusion container to be self-standing with the stopper down, and which can effectively prevent air leakage. [Structure] A cylindrical frame member 1 having open ends at both ends, which has a fixing portion 1A at a base end portion for fixing to a mouth portion 20 of an infusion container, and a rubber plug fitting portion 1B at a tip end portion thereof, and a rubber plug 3 A support member 4 fitted on the inner circumference of the tip of the frame member 1 to support the rubber plug 3 from the base end side of the frame member 1 and having a bottom surface formed of a thin film 7, and a tip of the frame member 1, The inverted table 12 has a flat top surface, which is connected via the score line 10 or the connecting portion 9 formed with a thin portion for thread cutting and covers the front end opening of the frame member 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stopper for an infusion container. More specifically, it relates to a stopper of an infusion container used for drip injection in medical institutions.

[0002]

[Prior art]

 Conventionally, the stoppers of infusion containers are classified into pull-top type and tamper-seal type according to the opening method. As the pull-top type, the stopper described in Japanese Utility Model Publication No. 1-170236 (conventional example I) is used. As the tamper seal type, a plug (conventional example II) described in Japanese Utility Model Laid-Open No. 1-104144 (Prior art example II) can be cited as an example.

In the pull-top type conventional example I, as shown in FIG. 4, an inner stopper 55 and an outer stopper 51 are fixed to the mouth of an infusion container 59, and a rubber stopper 57 is provided between the inner stopper 55 and the outer stopper 51. A pull tab 54 is attached to the ceiling wall 52 of the outer plug 51, and a score line 53 is formed on the lower surface of the ceiling wall 52. In this conventional example I, if a person's finger is hooked on the pull tab 54 and lifted, the ceiling wall 52 is cut from the score line 53, and the stopper can be opened. In the tamper seal type conventional example II, as shown in FIG. 6, a rubber stopper 69 is fitted into the mouth portion 62 of the infusion container 61 between the lower stopper 65 and the upper stopper 72, and is attached to the upper surface of the upper stopper 72. It is a welded film 76. In this conventional example II, the film 76 is pinched with fingers and peeled off to open.

[0004]

[Problems to be solved by the device]

 In the conventional example I, since the plug has the pull tab 54, the infusion container cannot be set upside down with the plug down. Therefore, when used as a solution container for an infusion container as disclosed in Japanese Patent Laid-Open No. 2-1277, it is not possible to stand in a table during drip treatment, and therefore many infusion containers can be used at once. Didn't come Further, in the conventional example I, there is a problem that a leak easily occurs in which air enters from the outside of the stopper to the inside of the infusion container. This is because when molding a pull-top type plug body, as shown in FIG. 5, the outer molds 101 and 102 are pulled out upward, and then the inner mold 103 is pulled out upward. This is because the outer circumference (arrow A portion) of the tip of the core is undercut, so that when pulling out the mold 102, the pull tab 54 may be pulled upward and the score line 53 may be broken. Further, in Conventional Example II, since the area of the top surface of the stopper is small, the problem that the infusion container cannot be self-supporting is also the same, and the problem that the leak is likely to occur is also the same. Because, as shown in FIG. 6, the tamper seal is formed by heat-welding the film 76 on the upper surface of the plug body, but since the synthetic resin having a relatively low melting point is used for the plug body, the welded portion B is formed by autoclave sterilization. This is because the sealing strength of is decreased and peeling easily occurs.

In view of the above circumstances, the present invention provides a stopper for an infusion container that allows the infusion container to be self-standing in an inverted state with the stopper down, and can effectively prevent air leakage. To aim.

[0006]

[Means for Solving the Problems]

 A stopper of an infusion container according to the present invention is a stopper for sealing a mouth portion of an infusion container, which has a fixing portion at a base end portion thereof with a mouth portion of the infusion container, and a rubber stopper at a tip portion thereof. A cylindrical frame member having open ends at both ends having a fitting portion, a rubber plug fitted to a rubber plug fitting portion of the frame member, and a rubber plug fitting fitted to an inner periphery of a tip end portion of the frame member. A support member having a thin bottom surface for supporting the rubber stopper fitted to the frame from the base end side of the frame member, and a score line or a thin-walled portion for screwing is formed at the tip of the frame member. It is characterized in that it is composed of an inverted pedestal having a flat top surface, which is connected through the connecting portion and covers the front end opening of the frame member.

[0007]

[Action]

 In the present invention, since the top surface of the stopper body is provided with the inverted table having the flat top surface, the infusion container can be self-supported in the inverted state. In addition, the mold for molding the stopper of the present invention uses the upper mold above the inverted table and the lower mold below because of the structure of the stopper, and the lower mold must be separated into left and right. There is. Then, the upper mold is pulled upward and the pair of lower molds are separated left and right.However, due to the die pulling action, no force is applied to the score line or the connection part where the thin portion for threading is formed. Since it does not apply, there is no breakage that causes a leak.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a stopper S according to an embodiment of the present invention, and FIG. 2 is a perspective view of a main part of an infusion container in an inverted state. In FIG. 1, S is a plug, which is attached to a flange 21 formed at the mouth 20 of the infusion container. The plug S is generally composed of a frame member 1, an inverted table 2, a rubber plug 3, and a support member 4.

The frame member 1 is a substantially cylindrical member having both ends open, and a flange-shaped fixing portion 1A is formed at the base end thereof, and the fixing portion 1A is heat-welded to the flange 21 of the infusion container. It is fixed by. Further, the tip end of the frame member 1 is a rubber plug fitting portion 1B, and a groove 5a formed in the inner circumference of the fitting portion 1B and an annular ring projecting downward from the tip end of the fitting portion 1B. It has a rib 5b. On the inner circumference of the fitting portion 1B, the supporting member 4 is fitted in the concave groove 5a. The support member 4 is composed of an annular rib 6 and a disk-shaped thin portion 7, and is made of a synthetic resin having chemical resistance, such as polyethylene or polypropylene. Further, the rubber plug 3 is sandwiched between the support member 4 and the annular rib 5b and held in the fitting portion 1B.

An inversion stand 2 is integrally formed on the upper surface of the tip end of the frame member 1 via a connecting portion 9, and a score line 10 or a thin portion for thread cutting is formed on the connecting portion 9. . The inverted base 2 has a central portion 11 that covers the front end side opening of the frame member 1 and an outer peripheral portion 12 having a larger outer diameter than that. The top surface of the inverted table 2 is formed flat. However, it is acceptable to form the central part in the recess. In the plug S, the frame member 1 and the inverted base 2 are made of synthetic resin such as polyethylene and polypropylene, and the rubber plug 3 is made of rubber material such as butyl rubber, natural rubber and butadiene rubber.

When opening the plug S of the present embodiment, if the inverted base 2 is held by hand and twisted as shown by arrow a, for example, only the inverted base 2 is twisted from the score line 10, It can be opened. In this case, since the rubber stopper 3 is not touched by fingers, there is no contamination. In the present embodiment, since the top surface of the inverted table 2 is formed flat, the infusion container C can be set upside down with the plug S facing downward as shown in FIG. Therefore, it is convenient because it does not occupy a lot of space when preparing a large number of infusion containers for drip treatment.

Further, no leak occurs in the plug body S of this embodiment. The reason will be described below. In FIG. 3, 31 is an upper mold of a molding die, and 32 and 33 are a pair of lower molds which are separated into right and left. When the mold is removed after the molding is completed, the upper mold 31 is pulled up and the pair of lower molds 32, 33 is pulled left and right, so that no unreasonable force is applied to the part where the score line 10 is formed, The score line 10 will not be broken. If the standing wall 13 of the recess of the inverted pedestal 2 is also tapered, similarly, no excessive force is applied and there is no risk of breakage. Therefore, there is no leak due to breakage of the score line or the thin-walled portion.

[0013]

[Effect of device]

 ADVANTAGE OF THE INVENTION According to this invention, the infusion container can be self-supported with a stopper down, and the stopper of the infusion container which can prevent an air leak effectively can be provided.

[Submission date] May 12, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

[Problems to be solved by the device]

In the conventional example I, since the plug has the pull tab 54, it is not possible to stand the infusion container in an inverted state with the plug down. Therefore, when it is used as a solution container of an infusion container as disclosed in Japanese Patent Application Laid-Open No. 2-1277, it is not possible to stand on the table during drip treatment, and thus many infusion containers can be used at one time. could not. Further, in the conventional example I, there is a problem that a leak easily occurs in which air enters from the outside of the stopper to the inside of the infusion container. This is because, when molding stopper of pull top type, as shown in FIG. 5, remove the mold 103 on the inner side upward, then it will be pulled out outside the side of the mold 101 upward, the pull tab This is because the outer periphery of the tip end of 54 (the portion indicated by arrow A) is undercut, and therefore when pulling out the mold 102, the pull tab 54 may be pulled upward and the score line 53 may be broken. Further, in Conventional Example II, since the area of the top surface of the stopper is small, the problem that the infusion container cannot be self-supporting is the same, and the problem that the leak is likely to occur is also the same. This is because, as shown in FIG. 6, the tamper seal is formed by heat welding the film 76 on the upper surface of the plug body. However, since the synthetic resin having a relatively low melting point is used for the plug body, the welded portion is autoclave sterilized. This is because the sealing strength of B is reduced and peeling is easy.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

The frame member 1 is a substantially cylindrical member whose both ends are open, and a flange-shaped fixing portion 1A is formed at the base end thereof, and the fixing portion 1A is thermally melted on the flange 21 of the infusion container. It is designed to be fixed by wearing. Further, the tip end of the frame member 1 is a rubber plug fitting portion 1B, and a concave groove 5a formed in the inner periphery of the fitting portion 1B and an annular shape protruding downward from the front end portion of the fitting portion 1B. It has a rib 5b. On the inner periphery of the fitting portion 1B, the support member 4 is fitted into the groove 5a. The support member 4 is made of an annular rib 6 a disc-shaped thin film 7 for, the synthetic resin having chemical resistance, such as those comprising polyethylene and polypropylene and materials. Further, the rubber plug 3 is sandwiched between the support member 4 and the annular rib 5b and held in the fitting portion 1B.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a plug body S according to an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part of the infusion container C in an inverted state.

FIG. 3 is an explanatory view of a mold used for molding the stopper of the present invention.

FIG. 4 is a vertical cross-sectional view of a stopper of Conventional Example I.

FIG. 5 is an explanatory view of a problem at the time of molding the stopper body of Conventional Example I.

FIG. 6 is a longitudinal sectional view of a stopper according to Conventional Example II and an explanatory view of problems.

[Explanation of symbols]

S Plug 1 Frame member 2 Invert base 3 Rubber plug 4 Support member 7 Thin film part 9 Connection part 10 Score line 31 Upper mold 32 Lower mold 33 Lower mold

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[Procedure amendment]

[Submission date] May 12, 1993

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] S Plug 1 Frame member 2 Inversion stand 3 Rubber stopper 4 Support member 7 Thin film 9 Connection part 10 Score line 31 Upper mold 32 Lower mold 33 Lower mold

Claims (1)

[Scope of utility model registration request] 1. A stopper for sealing the mouth of an infusion container, comprising:
A cylindrical frame member having a fixed portion to the mouth of the infusion container at its base end, and a rubber plug fitting portion at its tip end with open ends, and a rubber plug fitting portion of the frame member. A rubber plug to be fitted, and a bottom surface for fitting the rubber plug fitted to the inner periphery of the tip end of the frame member and fitted to the rubber plug fitting portion from the base end side of the frame member to a thin film. The formed support member is connected to the tip end of the frame member via a score line or a connecting portion having a thin portion for threading, and covers the tip end opening of the frame member. A stopper for an infusion container, which comprises a stand.