JPH105310A - Infusion container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pricking needle of a pricking needle-contg. infusion vessel, a pricking needle shorter than the length of its attachment parts and the necessary attachment parts. SOLUTION: The pricking needle 3j built in the bag-shaped container made of a synthetic resin is placed between two curved surface plates 3 in symmetrical positions. These curved surface plates 3 have central hinge parts 3h and are fixed to a container aperture 1a and a pricking needle pedestal 3e via upper and lower hinge parts 3g, 3i. The upper curved surface parts 3b are formed to crown and the lower curved surface parts 3e to recess toward the pricking needle 3j side. Both curved surface parts have the shapes having the central hinge parts 3b as a 180 deg. rotational symmetrical axis. A circular hole is formed in the mast proximate part of the upper curved surface parts 3b facing each other. The generator of the conical front end 3k of the pricking needle comes into contact with this circular hole at an intersection angle of <90 deg. and the generator of the columnar rear end 3m is temporally fixed by coming into contact with the circular hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vial for storing a medicine and a bag made of synthetic resin for storing a dissolving or diluting liquid, which are integrated into a vial. The present invention relates to an infusion container which can be connected to a container for mixing both contents. More specifically, when the vial is connected to the opening side of the synthetic resin bag-shaped container in an aseptic state, and the liquid is passed through the piercing needle mounted in the synthetic resin bag-shaped container,
The present invention relates to an infusion container in which an extremely short tubular piercing needle can be used.

[0002]

2. Description of the Related Art A powdery or liquid drug contained in a vial and a dissolving solution or a diluting solution contained in a synthetic resin bag are mixed and dissolved at a required time, and are necessary for an infusion. A method for obtaining a drug solution for infusion usually involves piercing a rubber stopper at the opening of a vial and a stopper having a sealing thin film formed at the opening of a synthetic resin bag-like container. The method of connecting under aseptic condition using a needle is generally used. In particular, recently, a method of inserting a piercing needle in a synthetic resin bag-like container and performing a piercing operation by operation from the outside of the container, etc. Has been proposed to reduce the complexity of sterilizing the piercing needle or maintaining a sterile state.

However, as described above, in order to place the piercing needle in the synthetic resin bag-shaped container so that the needle can be pierced by operation from outside of the container at the required time, it is necessary to wait until the necessary time. It is necessary to ensure that the film is temporarily fixed so that the thin film is not damaged by the piercing needle. Further, in order to advance the piercing needle perpendicular to the thin film, a piercing needle guide, for example, a tubular guide of a desired length in an externally fitted state is required. The equivalent length is not directly involved in the original piercing and communication, so the entire length of the piercing needle and its attached members to be stored in the synthetic resin bag-shaped container is the same as that of the piercing itself. The length is considerably longer than the required length, which hinders the storage of infusion containers with a built-in piercing needle, preparation of infusions, infusion workability, etc., and is shorter and shorter than the entire length of conventional piercing needles and their attached members. It has been desired to develop a piercing needle and the necessary accessory members.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a piercing needle and a necessary accessory member which are shorter than the entire length of the piercing needle and its accessory member in the conventional infusion needle-containing infusion container. The task is to provide. or,
It is an object of the present invention to provide an infusion container in which a piercing needle before the piercing operation is easily fixed temporarily and the piercing operation itself is simple, and a necessary accessory member is incorporated.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive studies and as a result, a hinge for connecting a base to which a piercing needle is fixed and an opening of a synthetic resin bag-like container is provided. The present inventors have found that the problem can be solved by supporting with a curved plate, and have completed the present invention. The gist of the present invention is as follows. The reference numerals used in the claims are as follows:
The same reference numerals are used for the following description and the embodiments of the present invention described below.

(1) A piercing needle orthogonal to the thin film 1c at the center of the bottom plate 1e of the vial insertion can 1b attached to the opening 1a of the synthetic resin bag-like container 1 containing a dissolved or diluted liquid. 3
In the infusion container containing j, the piercing needle is a tubular needle having a cylindrical rear end portion 3m fixed to the piercing needle base 3e and a conical front end portion 3k following the piercing needle. It is located between two curved plates 3 symmetrical to each other, and the curved plate 3
An end on the distal end side of the piercing needle is fixed to the bottom plate of the vial insertion can via an upper hinge portion 3g, and an end on the rear end side of the piercing needle is inserted through the lower hinge portion 3i. Between the upper hinge portion and the lower hinge portion, between the central hinge portion 3h and the upper hinge portion and the lower hinge portion.
And a concave lower curved surface portion 3a, each of which has a U-shape or an arc shape with the central hinge portion being a 180-degree rotationally symmetric axis, and has a closest portion 3p of the opposing upper curved surface portion. In the vicinity of the curved surface portion, circular holes 3r each having a piercing needle as a symmetric axis are formed, and the generating line of the conical tip portion 3k of the piercing needle has an intersection angle of less than 90 degrees with the inner circumference of the circular hole. And an infusion container which is temporarily fixed in contact with the inner periphery of the circular hole at the rear end of the columnar 3m. (Second) The connection between the curved plate and the bottom plate of the vial insertion can-like body is made by connecting a connection plate 3c formed at the end of the curved plate at the distal end side of the piercing needle via an upper hinge portion, and the center of the bottom plate. 2. The infusion container according to the above-mentioned 1, wherein the infusion container is fixed by fitting or fusing with the outer peripheral portion 1g of the bottom plate excluding the thin film 1c. (3) The infusion container according to the above (1) or (2), wherein the distance between the two lower hinge portions is not smaller than the distance between the two upper hinge portions. (4) The infusion container according to the above (1), wherein the curved plate, the hinge portion, and the piercing needle pedestal are thermoformed bodies of a single synthetic resin plate, and are integrally formed products provided with a difference in thickness.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the technical scope of the present invention is not limited by the following embodiments. Note that the same reference numerals are given to portions common to the drawings. FIG. 1 is an example of an infusion container according to the present invention, in which a vial 2 and a synthetic resin bag-like container 1 to which the vial is connected are partially cut away along a central axis at the time of the connection. It is a chipping sectional view. The vial 2 contains a drug that is diluted or dissolved by the drug solution in the synthetic resin bag-shaped container 1 and has an opening 2a.
Is provided with a rubber stopper 2c that can be pierced by a piercing needle 3j described later. The rubber stopper 2c does not come off during storage of the vial or during the above-described piercing, and it is particularly preferable if the piercing is easy. Although the shape is not limited, a thick piercing needle having a diameter of 4 to 6 mm may be used in order to shorten the working time of the dilution or dissolution. For safety, the top surface portion 2d of the rubber stopper is opened at the opening of the vial. It extends to the opening front end surface 2b of the portion 2a, and the leg portion is a tubular leg portion 2f having an inside diameter easy to pass through the piercing needle, and further from the outer surface of the neck portion of the vial opening 2a to the outer periphery of the top surface portion 2d of the rubber stopper. It is preferable to fasten with an annular metal or synthetic resin rubber stopper fixture 2h that covers the leading part. The size of the rubber stopper fixing device is determined by the size and shape of the neck portion of the vial, the thickness of the rubber stopper, and the like, but usually a diameter of 20 to 21 mm and a height of 5 to 6 mm are used. The rubber stopper fixture 2h has a top surface 2 of the rubber stopper.
The inner diameter of the annular portion that covers the outer periphery of d is sufficient if it has a diameter equal to or greater than the diameter of the thin film 1c described below, and is not particularly limited, but usually a diameter of about 7 to 13 mm is used.
The top surface 2e is sterilized by irradiation of ultraviolet rays or the like during the infusion operation, or is coated so as to maintain the sterilized state, and is appropriately peeled and pierced.

The synthetic resin bag-shaped container 1 is obtained by cutting a long synthetic resin tubular body obtained from one or more layers of a flat film or a hollow molded film into a desired length, and cutting the upper and lower ends (lower end). (Not shown) is a bag-shaped container in which a heat seal portion 1n is formed, and the synthetic resin used is low-density polyethylene, linear low-density polyethylene, medium-density, high-density polyethylene, ethylene-vinyl acetate copolymer. A combined saponified product is preferably used. The synthetic resin bag-like container 1 includes:
As described above, the liquid for dissolving or diluting the medicine is stored, and the opening 1a provided in at least one of the heat seal portions is connected to the vial, and the vial serving as a connecting tool is connected for convenience of liquid passing. The can body 1b for insertion is integrally mounted. The vial insertion can 1b has a bottom plate 1e and a wall surface 1d, and a thin film 1c which is pierced and broken by a piercing needle 3j is formed at the center of the bottom plate 1e. The thin film 1c
Therefore, the size of the piercing needle must of course be at least large enough to allow the piercing needle to pass therethrough, and since the shape is preferably circular, it is necessary that the piercing needle has a diameter of 4 to 6 mm or more. A diameter of 9 mm is preferred.

The material of the can-shaped body 1b for inserting a vial is not particularly limited, but is the same as the material of the synthetic resin bag-like container 1 in consideration of the liquid-tight attachment to the opening 1a. Or at least a material easily heat-fused is selected, and the same low-density polyethylene, high-density polyethylene, polyolefin such as polypropylene, ethylene-vinyl acetate copolymer or a saponified product thereof are suitable, alone or Used by being laminated. The thickness of the can is determined in consideration of the rigidity in maintaining its shape, the elastic deformation when inserting the vial, and the fixing and holding ability of the vial. It becomes necessary, but 1
About 2 mm is sufficient. Since the thin film seals the liquid in the synthetic resin bag-shaped container 1, it must have strength to withstand accidental external pressure applied to the container.
It is preferably of a thickness of about one degree, and may be formed integrally with the vial can-inserting body 1b, or may be separately formed and bonded. In addition, it is natural that a diameter larger than the diameter of the piercing needle described later is required, and when the needle diameter is 4 to 6 mm, a diameter of about 5 to 8 mm is required.

The opening side of the vial 2 is inserted into and fixed to the vial inserting can 1b to prevent detachment of the vial due to a piercing pressure at the time of piercing with the piercing needle 3j. It is preferable that an engaging hook 1k is provided at the outer end of the inner wall surface 1i of the can-shaped body 1b toward the center thereof, preferably extending about 0.5 to 1 mm in length. Also, a vial-insertable can 1b and a fitted vial 2
In order to improve the airtightness and liquid tightness of the rubber plug 2c on the opening side, a protrusion 1j is formed in an annular shape on the inner surface of the bottom plate 1e of the can 1b, and the top surface 2e of the rubber plug 2c is formed on the top surface 2e. Piercing is also effective.

A piercing needle 3j is provided in the bag 1 made of synthetic resin.
Are disposed at right angles toward the thin film 1c and are temporarily fixed. The piercing needle 3j is a tubular needle having a cylindrical rear end 3m, a conical tip 3k following the outer shape, and a tubular hole 3n. A multi-tube type is more preferably used than a single-tube type for mixing chemicals. You. The piercing needle 3j is fixed to the surface of the piercing needle pedestal 3e, and the pedestal has an opening 3f for communication so that the tubular end of the piercing needle is not closed.
Usually, the diameter of the piercing needle is about 4 to 6 mm, and the length of each of the cylindrical rear end 3 m and the conical front end 3 k is 15 to 2
Those having a size of about 1 mm and 12 to 18 mm are preferably used.

At both ends of the pedestal 3e, curved plates 3, 3 are provided, and the curved plates 3, 3 have a symmetrical positional relationship with respect to the piercing needle 3j, and the bottom surface of the vial insertion can 1b. It is connected and fixed to the outer surface 1g. The curved plates 3 and 3 respectively
A lower curved surface portion 3a having a concave curved surface on the piercing needle side, an upper curved surface portion 3b having a convex curved surface on the piercing needle side, a connection plate 3c connected and fixed to the bottom surface 1g of the can-shaped body 1b, A lower hinge 3i connecting the needle base 3e and the lower curved surface 3a, a central hinge 3h connecting the lower curved surface 3a and the upper curved surface 3b,
And an upper hinge portion 3g connecting the upper curved surface portion 3b and the connection plate 3c, and a circular hole is formed in a portion of the upper curved surface portion 3b closest to the closest curved surface portion symmetrically with respect to the piercing needle. The upper inner periphery of the circular hole is in contact with the bus of the conical portion of the piercing needle, and the lower inner periphery is in contact with the bus of the cylindrical portion.

The aforementioned piercing needle 3 used in the present invention.
j, the piercing needle pedestal 3e and the curved plate 3 are disposed in the synthetic resin bag-shaped container 1, so that they react with the stored liquid, contain components leached into the liquid, or are dissolved. Naturally, the material must not be a material, and among the materials used for the synthetic resin bag-like container 1, a material having high rigidity is preferably used. Specifically, high-density polyethylene and polypropylene are preferable, and polypropylene is particularly preferable including hinge characteristics. The curved plate is preferably required to have a rigidity that hardly causes deformation.
A sheet having a thickness of 5 mm is preferred, but 1.0 to 2.0 m
m thickness is particularly preferred. The hinge characteristics required for the hinge portion according to the present invention are as follows: between each curved surface portion, the hinge portion connecting each curved surface portion, the piercing needle pedestal, and the connection plate, the piercing needle of usually 2 to 7 kg by the operator. The bending stiffness is such that it is bent only after receiving the pressing stress, and the liquid stored in the container 1 is
It is sufficient that the sheet has a strength capable of repeating bending at a maximum of 180 degrees at least several times. When polypropylene is used, the thickness is preferably 20 to 200 μm, and 50 to 1 μm.
00 μm is more preferred. The hinge is usually 0.5 width
It is formed into a groove shape of １1 mm.

Although the brief description of the relationship between the circular holes formed in the curved plates 3 and 3 and the piercing needle has been described above, FIG. The pedestal 3e
And side views of the curved plates 3 and 3;
FIG. 3 is a view taken along line XX of FIG. 2 (however, a piercing needle is not shown). 3b 'in FIG. 3 is an end face of each curved surface portion. A circular hole 3r having a diameter of usually about 2 to 4 mm is formed in a place including the closest portions 3p, 3p of the upper curved surface portions 3b, 3b, and a piercing needle 3j is formed at an upper portion 3s of the inner periphery of the circular hole. Contact with the generatrix of the conical tip 3k, lower part 3t
In this case, the piercing needle comes into contact with the generatrix of the cylindrical rear end portion 3m to prevent the piercing needle from rolling. FIG. 3 shows an inverted trapezoidal shape, and the width of the connection plate 3c and the width of the pedestal 3e are 10 to 1 respectively.
About 5 mm and about 7 to 10 mm are preferable. But,
The present invention is not particularly limited as long as the fixedness between the curved plate 3 and the bottom surface 1g of the vial insertion can 1b and the piercing needle pedestal 3e is strong, and there is no horizontal swing in the figure. Not something. Therefore, it may be rectangular. In this way, the axis of the piercing needle is stabilized by fixing the circular hole and the curved plate up and down.

As is clear from the above description, when the vial 2 and the synthetic resin bag-shaped container 1 are connected, each hinge portion of the curved plate 3 is not subjected to human bending stress, so that the bent portion is not bent. The face plate 3 is not deformed as a whole, and the piercing needle 3j is maintained in a state of being temporarily fixed between the opposing curved surfaces.

FIG. 4 is a partial view of FIG. 1 or FIG. 2, and explains that in the present invention, the angle between the upper curved surface and the generatrix of the conical tip of the piercing needle is an important requirement. And the angle こ と が needs to be less than 90 degrees. By making the angle less than 90 degrees,
When the piercing needle is pushed up from below, the generatrix of the piercing needle acts on the upper inner peripheral portion 3s of the circular hole, and the upper curved surface portions 3b, 3b are separated from each other about the upper hinge portions 3g, 3g as the center of rotation. The phenomenon occurs. Conversely, if it is 90 degrees or more, the stresses applied to the upper curved surface portions will act in a direction approaching each other, and the piercing needle will not be able to advance.

Further, by setting the length between the upper hinge portions 3g, 3g to be equal to or less than the length between the lower hinge portions 3i, 3i, the circular hole formed by the conical tip of the piercing needle 3j is formed. The inner peripheral upper portion 3s is pushed up to raise the upper curved surface portions 3b, 3
b, the center hinge portions 3h, 3h are more easily bent in a direction in which the upper curved surface portion 3b and the lower curved surface portion 3a approach inward, and the lower hinge portions 3i, 3i become lower curved surface portions 3a, 3a. It becomes easier to bend in the direction in which the gap 3a opens, and it is more convenient to be far from a position where it does not hinder the advance of the piercing needle 3j.

FIG. 5 shows a state in which the opening side of the vial 2 is inserted into the vial inserting can 1b in FIG. 1, and the rubber stopper fixing tool 2h is hermetically sealed to the inner wall 1i of the wall 1d of the can 1b. A projection 1 provided on the inner surface of the bottom
j is pierced into the top surface 2e of the rubber stopper 2c, and the engaging hook 1k of the can 1b is engaged with the outer peripheral end of the rubber stopper fixture 2h. Is a cross-sectional view of a state when the piercing needle is pushed in the direction of the arrow to the vicinity of the thin film 1c. By applying a pressing force equal to or greater than the force based on the rigidity of the upper hinge 3g, the hinge is bent, the piercing needle 3j advances, and the upper curved surfaces 3b, 3
b come apart from each other. By this action, both lower curved surface portions 3
a, 3a are central hinge portions 3h, 3h in directions away from each other.
And the lower hinge portions 3i, 3i are bent. Prior to the insertion of the vial, the top surface 2e of the rubber stopper is inserted.
It is necessary to completely sterilize the space between the thin film 1c and the inner surface of the can-shaped body 1b for inserting a vial via sterilization irradiation or the like.

FIG. 6 is a cross-sectional view of the state in which the piercing needle 3j is further pushed in the direction of the arrow from the state of FIG. 5, penetrates the thin film 1c of the vial insertion can 1b, and pierces the top surface 2d of the rubber stopper 2c. FIG. 7 is a cross-sectional view showing a state in which the top surface 2d of the rubber plug 2c has been pierced by the piercing needle by further pushing the state of FIG. Even if a piercing stress is applied to the rubber stopper by the piercing needle, the rubber stopper 2c is kept in the rubber stopper fixture 2h.
And the can 1b does not come off from the can 1b due to the close fit of the can 1b and the engaging action of the engaging hook 1k. As the piercing needle 3j advances, the upper curved surface portion 3b further opens outward, and as the piercing needle pedestal 3e moves upward, the lower hinge portion 3i also advances upward and the lower curved surface portion 3a further opens. Has become. Since the upper curved surface portion 3b and the lower curved surface portion 3a are of a symmetrical shape with the center hinge portion 3h as a rotation center of 180 degrees, the two curved surface portions 3a and 3b overlap each other via the central hinge portion 3h. To help the piercing needle move smoothly. When the shape and the positional relationship of the upper and lower bent portions do not satisfy the above conditions, an abnormal elongation stress is applied to one of the hinge portions even if an attempt is made to raise the piercing needle base 3e. Approaching and superimposed state is never achieved. Therefore, when such a curved plate is used, the traveling distance of the piercing needle 3j is restricted, so that a long piercing needle similar to the conventional one is required. The object of the present invention of shortening the piercing needle will not be achieved.

[0020] Figure 8 have been used in Figures 1-7, instead of the upper and lower side curved surface portion which is bent, in a side view when using the upper curved surface portion 3b ₁ and a lower curved surface portion 3a ₁ of the arc FIG. 3 is a diagram corresponding to FIG. In addition to the piercing needle 3j, the piercing needle pedestal 3e, and the connection plate 3c to the vial insertion can-shaped body, the same hinges as those described above can be used, and the operation and effect are the same. The angle Θ between the upper curved surface and the generatrix of the conical tip of the piercing needle is the angle between the tangent at the contact point with the inner periphery of the circular hole and the generatrix.

FIG. 9 is a sectional view showing an example of a method of joining the outer peripheral portion 1g of the bottom plate 1e and the connecting plate 3c of the bent plate 3 to each other. On the lower surface 1g of the bottom surface 1e of the vial insertion can 1b, one or more recesses 1m are provided in a portion surrounding the thin film 1c, and the surface 3 of the connection plate 3c of the curved plate is provided.
One or a plurality of protrusions 3w are provided on d, and are formed in shapes that can be fitted to each other. These concave portions and convex portions may be joined by simple fitting, but if both are joined by partial fusion, for example, point fusion, it will be more reliable. After the vial can insertion body 1b is connected to the curved plate 3 as described above, the opening 1a of the bag 1 made of synthetic resin is formed.
Attached to.

FIG. 10 is a side view showing an example in which the bent curved plates 3, 3 shown in FIGS. 1 to 7, the piercing needle pedestal 3e, and the connecting plate 3c are integrally formed. Reference numeral 3 denotes an upper curved surface portion 3b, a lower curved surface portion 3a, an upper hinge portion 3g, a central hinge portion 3h, a lower hinge portion 3i, and a connection plate 3c. Although the method of the integral molding is not particularly limited, it goes without saying that a method of forming a molded product in a plane state as much as possible is preferable from the viewpoint of simplifying the shape of a molding die. As a molding method, an ordinary method such as injection molding or compression molding can be applied.

The hinges constituting the curved plate used in the present invention may be formed integrally with the upper and lower curved surfaces, the piercing needle pedestal and the connecting plate by the above-mentioned various forming means. A means for separately forming and fusing a sheet having a rigidity capable of temporarily fixing the needle passing, that is, a rigidity not deforming until subjected to a piercing operation stress may be employed. Various known methods such as adjustment of the thickness of the hinge portion, selection of the material, selection of the cross-sectional shape such as rib formation, and the like can be appropriately used for adjusting the rigidity.

[0024]

According to the infusion container of the present invention, the piercing needle incorporated in the synthetic resin bag-like container for joining the vial can be shortened, and the opposed circular hole of the curved plate and the rigidity can be reduced. The piercing needle can be temporarily fixed by the hinge portion having a, and the traveling direction can be maintained in a desired direction,
At the time of infusion preparation, simply by pushing the bottom of the piercing needle from the outside of the synthetic resin bag-like container, piercing and connection utilizing the bending phenomenon of the hinge portion of the curved plate can be performed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway cross-sectional view illustrating an example of an infusion container according to the present invention, with a vial to be connected and a center axis thereof being aligned.

FIG. 2 is a partially cutaway side view of only the piercing needle side of FIG. 1;

FIG. 3 is a side view taken along line XX of FIG. 2 and puncturing needles are omitted.

FIG. 4 is a partially cutaway side view of the piercing needle conical portion and the upper curved surface portion of FIG. 2, and is an explanatory diagram of an angle formed between the former generatrix and the latter.

5 is a cross-sectional view of a state in which the vial opening side is inserted into the vial insertion can-shaped body of FIG. 1 and the piercing needle is pushed in the direction of the arrow.

FIG. 6 is a cross-sectional view showing a state where the piercing needle is further pushed from the state of FIG. 5 and the thin film is pierced.

7 is a cross-sectional view of a state in which the piercing needle is further pushed from the state of FIG. 6 and a rubber stopper is also pierced.

FIG. 8 is a side view in the case of using an arc-shaped upper and lower curved surface portion instead of the bent upper and lower curved surface portions of FIGS.

FIG. 9 is a side view of a fitting connection relationship between a concave portion formed on the bottom surface of the vial inserting can body and a convex portion formed on the connection plate of the curved plate.

FIG. 10 is a side view of the curved plate and the piercing needle pedestal used in FIGS.

[Explanation of symbols]

1 ...... Synthetic resin bag-like container 1a ... ...... Opening 1b ...... Canister for inserting vial bottle 1c ... Thin film 1d ... Wall surface 1e Bottom plate 1g Bottom plate outer peripheral portion 1i Inner wall surface 1j Projection 1k Engagement hook 1m ··· Recess 1n ··· Heat seal 2 ···· Vial bottle 2a ··· Opening 2b ····· Opening tip 2c ··· · Rubber stopper 2d · · · Top surface 2e · · · Top surface surface 2f · · · · Tubular leg 2h · · · · Rubber stopper fixing device 3 ··· · Curved plate 3a, 3a ₁ · · · Lower curved surface 3b, 3b ₁ · · · Upper curved surface 3b '· · · · End surface of upper or lower curved surface 3c · · · · · Connection plate 3d · · · · Connection plate surface 3e ... ..Puncture needle base 3f Opening 3g Upper hinge 3h Central hinge 3i Lower hinge 3j・ ・ Puncture needle 3k ・ ・ ・ ・ ・ ・ Conical tip 3m ・ ・ ・ ・ ・ ・ Cylindrical rear end 3n ・ ・ ・ ・ ・ ・ Tubular hole 3p ・ ・ ・ ・ ・ ・ Maximum approach of upper curved surface Part 3r: circular hole 3s: inner upper part 3t: inner lower part 3w: convex part

Claims (4)

[Claims] 1. A vial-insertable can 1b attached to an opening 1a of a synthetic resin bag-like container 1 containing a dissolved or diluted liquid.
In the infusion container having a piercing needle 3j built therein orthogonal to the thin film 1c at the center of the bottom plate 1e, the piercing needle has a cylindrical rear end portion 3m fixed to the piercing needle pedestal 3e and a conical front end following this. 3k, which is symmetrical with respect to the piercing needle.
The curved plate is fixed to a bottom plate of a vial insertion can-like body via an upper hinge 3g at an end on the tip side of the piercing needle. The lower end is connected to the piercing needle pedestal via the lower hinge 3i, and the center hinge 3h sandwiched between the two hinges and the upper and lower hinges are convex toward the piercing needle. An upper curved surface portion 3b and a concave lower curved surface portion 3a are respectively formed, and both curved surface portions have a V-shape or an arc shape having a central hinge portion as a 180-degree rotational symmetry axis, and the closest upper curved surface portion is closest to the upper curved surface portion. 3p
Are formed in the vicinity of the curved surface portion including a circular hole 3r having the piercing needle as the axis of symmetry, and the generating line of the conical tip 3k of the piercing needle is less than 90 degrees with the inner circumference of the circular hole. An infusion container characterized by being contacted at an angle of intersection and a bus bar of a cylindrical rear end portion 3m being in contact with the inner periphery of a circular hole and being temporarily fixed. 2. A connecting plate 3c formed at the end of the curved plate 3 on the distal end side of the piercing needle through an upper hinge portion 3g. The connecting plate 3c is fixed to the bottom plate 1e of the vial insertion can 1b. The infusion container according to claim 1, wherein the infusion container is fixed by fitting or fusing with the bottom plate outer peripheral portion 1 g except the thin film 1 c at the center of the bottom plate. 3. The infusion container according to claim 1, wherein a distance between the two lower hinge portions is not smaller than a distance between the two upper hinge portions. 4. The infusion container according to claim 1, wherein the curved plate, the hinge portion, and the piercing needle pedestal are thermoformed bodies of a single synthetic resin plate, and are formed integrally with a difference in thickness. .