JP2000281114A - Seal cap structure for synthetic resin container for transfusion liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and simple seal cap structure for a synthetic resin container for a transfusion liquid, in which a cap and a needle-insertable stopper can be incinerated together with a container main body for disposal, and which has no possibility that an inner solution is contaminated even in the case where tamper conduct is done. SOLUTION: In this seal cap structure, a neck 11 of a synthetic resin container for a transfusion liquid is capped with a cap 4 under the condition of capping a needle- insertable stopper 2 on a pouring port of the neck. The cap 4 is molded of a synthetic resin, and a slit part 24, which is broken by the operation of a pulling operating piece 14, is provided in top face of the cap. When the neck is capped, the slit part 24 is disposed in the region E of an upper edge part of the pouring port of the neck 11, and a protective bead 11a is provided on the inner circumferential side of the upper edge part of the pouring port of the neck 11. A container main body 1, the needle-insertable stopper 2 and the cap 4 can be incinerated together for disposal without being sorted and, even in the case where a sharp object is inserted into the slit part 24 for breaking, the penetration of such an object into the neck 11 is prevented, so that the contents are not contaminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capping structure of a synthetic resin container for infusion, and more particularly to a capping structure of a synthetic resin container for infusion for storing infusions and blood transfusions.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a sealing structure of a transfusion container of this kind is formed on a neck 111 of a container main body 101 of a synthetic resin container for transfusion so as to protrude from an outer periphery of a spout mouth. After integrally forming a flange portion 111a to be closed and closing a spout of the neck portion 111 with a rubber needle plug 102,
An aluminum cap 104 is covered over the needle plug 102 and the flange 111a, and the upper surface thereof is covered with a cap cover 103 made of synthetic resin. The cap 104
The lower edge is crimped inward to form a flange 111a.
The spout is sealed by hooking the lower surface of the spout. Then, the cap 104 and the cap cover 103
Are integrated by means such as fitting at substantially the center thereof, and a slit 104 a is formed in an annular shape on the upper surface of the cap 104. And when using it,
By pulling up the cap cover 103 strongly and breaking the slit portion 104a, the upper surface of the needle plug 102 is exposed, and the infusion needle is inserted into the exposed portion of the needle plug 102.

In the above-mentioned conventional infusion container, the cap 104 which covers the flange portion 111a of the used infusion container remains, and since such a cap 104 is made of aluminum, the conventional infusion container is made of aluminum. The cap 104 must be treated in a separate step of separating the container body 101 and the needle plug 102 before incineration of the infusion container, which not only causes a high cost, but also requires a separate operation. It was very troublesome. In order to solve such a problem, it has been proposed that the cap portion is formed of a material that can be incinerated, that is, a synthetic resin material, and can be incinerated together with the container body. In this case, if a tab or a pull top is provided in the slit portion of the cap, and these are pulled, the cap is partially broken by the slit portion so that the needle plug can be exposed, which is structurally simple and preferable. . However, as a practical matter, there is a danger that a person other than the nurse or doctor or the like will mischief and pierce a sharp object through the slit for breaking to contaminate the contents. become. Achieving a complex structure and management process for complete incineration and protection from mischief would lead to high costs, and a simple structure would require some contrivance.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to allow a cap and a needle plug to be incinerated together with a container main body, and to be mischievous. An object of the present invention is to provide a capping structure of a synthetic resin container for infusion, which has a safe and simple structure that does not cause contamination of an internal solution.

[0005]

According to a first aspect of the present invention, there is provided a synthetic resin container for infusion, wherein a neck portion of the container is inserted with a needle plug at a spout. In the capping structure in which the cap is covered with the cap, the cap is molded with synthetic resin, and a slit is provided on the top surface of the cap along with a pulling operation piece to break the required range of the top surface by operating the operation piece. The gist of the present invention is that when the crown is covered, the slit portion is arranged at a position within the spout upper end region of the neck portion.

According to the first aspect of the present invention, the container body, the needle stopper, the cap, and the like can be incinerated together without being separated, and if the slit for breaking is mischievous with a sharp-pointed object, it is pierced. In addition, the pierced end blocks the edge at the spout and prevents its entry.

According to a second aspect of the present invention, a protective bead is provided on an inner peripheral side of an upper end edge of the neck according to the first aspect.

According to a second aspect of the present invention, when the sharp object is pierced from the slit, the sharp object penetrates the needle plug,
The bead is prevented from entering the inside of the neck with a defensive bead.

A third aspect of the present invention is characterized in that the slit portion according to the first or second aspect is a groove portion, and a rising ring wall is provided along the outer edge portion of the groove portion.

[0010] According to the third aspect, the sharp ring prevents the sharp object from being laid down and stabbed into the slit by the rising ring wall, and the tip of the inserted sharp object is positioned on the inner circumferential side of the defense bead. Do not reach.

According to a fourth aspect of the present invention, there is provided the cap according to any one of the first to third aspects, wherein locking projections are provided at equal intervals below the inner peripheral surface of the cap, and the cap is provided above the locking projection. By forming a screw portion and screwing with the threaded portion of the neck of the container body, the ratchet pawl formed below the threaded portion of the neck engages with the locking protrusion, and the locking portion of the screw portion is engaged. The gist of the present invention is that screwing to the threaded portion is fastened, and the reverse screwing rotation to the open crown is locked in a state where the cap is fastened.

According to a fourth aspect of the present invention, when the cap is fastened, the latching projection is engaged with the ratchet pawl protruding from the neck of the container body at equal intervals, thereby stably fixing the cap of the cap. Keep in state. At the time of this locking, the needle plug is pressed against the cap and elastically deforms to fit the edge of the spout and maintain watertightness.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an example of a capping structure of a synthetic resin container for infusion according to the present invention. The crown structure of the synthetic resin container for infusion is composed of a container body 1 and a neck 1 of the container body 1.
1 includes a needle stopper 2 that closes the spout, a cap 4 that covers the needle stopper 2 and is screwed to the outer periphery of the neck 11, and a cap cover 3 that covers the upper surface of the cap 4 (FIG. 1 or FIG. 1). 3).

The container body 1 is a bottomed bottle integrally formed with a neck 11, and is made of a synthetic resin material which can be incinerated, for example, PVDC, PET or the like.

The neck 11 has a protective bead 11a projecting upward on the inner peripheral side of the upper end edge, a threaded portion 11b to which the cap 4 is screwed, and a ratchet claw 11c formed below the threaded portion. And are integrally molded.

The protective bead 11a prevents the sharp object from penetrating through the needle plug and entering the inside of the neck 11 when the sharp object is pierced from a slit portion 24 of the cap 4 described later. To prevent this, it is preferable to provide the upper end edge of the neck portion 11 as close to the inner peripheral side as possible.

The threaded portion 11b is formed on the outer peripheral portion 1a of the neck portion 11.
And is screwed with a screw portion 54 of the cap 4 described later.

A plurality of ratchet pawls 11c are provided on the outer peripheral surface of the neck portion 11 below the threaded portion 11b at equal intervals in the circumferential direction so as to be substantially orthogonal to the curved surface of the outer peripheral portion 1a of the neck portion 11. It has a triangular cross section composed of an upright surface a1 and an inclined surface a2 provided to be inclined to the curved surface of the outer peripheral portion 1a of the neck portion 11.

The needle plug 2 has a substantially inverted convex shape with a vertical cross section having a downwardly projecting portion 2a inserted into the spout of the neck portion 11 and a flange portion 2b projecting radially from the upper end side.
Is held between the cap 4 described below and the upper edge surface of the neck portion 11 to keep the inside of the container body 1 watertight. The material of the needle plug 2 is to keep the inside of the container watertight and to set the infusion needle 5
It is preferable to use a rubber material such that natural rubber, butadiene rubber, ethylene propylene rubber, isobrene rubber, or the like can be used to pierce with a suitable force.

The cap 4 has a cylindrical shape composed of a top portion and a skirt portion, and has a locking projection 44 and a screw portion 54 provided on the inner peripheral surface of the skirt portion, a pulling operation piece 14 provided on the top surface, and Slit 24, rising ring wall 34
And an engaging projection 4a provided on the outer peripheral surface of the skirt portion.
It is integrally molded from a synthetic resin that can be incinerated.

A plurality of locking projections 44 are provided at equal intervals in the circumferential direction below the inner peripheral surface of the cap 4 so that the upright surface b1 faces the upright surface a1 of the ratchet claw 11c of the neck portion 11 described above. And an upright surface b1 substantially perpendicular to the inner peripheral surface of the skirt portion of the cap 4, and an inclined surface b inclined to the inner peripheral surface of the cap 4.
2 and a triangular cross section.

The screw portion 54 is formed above the locking projection 44.

The pulling operation piece 14 is a tab, a pull top, or the like, and has a ring shape on which a finger of a hand can be hooked. A part of the lower end is integrally connected to the top surface of the cap 4 by a connecting piece portion 14a. I have.

The slit portion 24 is a groove formed on the top surface of the cap 4 and is broken by pulling the pulling operation piece 14. Cap 4 to neck 11
When screwed into the spout, the slit portion 24 is arranged so as to be located in the upper end edge region E of the spout, so that even if a sharp tip is stabbed by mischief, the upper end edge of the spout is obstructed. , And further intrusion is prevented, so that intrusion into the inside of the neck 11 is prevented.

The rising ring wall 34 has a slit 2
Along the outer edge portion of the groove of No. 4, it is projected upward in an annular shape to prevent a sharp object from being stabbed into the slit portion 24, and the tip of the pierced sharp object is inside the neck portion 11. To prevent intrusion into

The engagement projections 4a are a plurality of projections projecting from the outer peripheral surface of the skirt portion of the cap 4 at equal intervals in the circumferential direction, and are detachably engaged with engagement recesses 3a of the cap cover 3 described later. I do.

The cap cover 3 is formed so as to cover from the pulling operation piece 14 to the engagement projection 4a of the cap 4, and has an inner peripheral surface which is detachably connected to the engagement projection 4a. A plurality of engagement recesses 3a are formed so as to match. The cap cover 3 is provided to protect the pulling operation piece 14 from being accidentally pulled or a mischievous sharp object from being stuck into the top surface of the cap 4. Since the synthetic resin container for infusion is already removed when discarded, it may be formed of a metal material, or may be formed in the same manner as the above-described members such as the cap 4 and the container body 1. It may be made of resin.

In the capping structure of the synthetic resin container for infusion of the above construction, when the cap 4 is screwed to the neck 11, first, the screw portion 54 of the cap 4 is first screwed to the threaded portion 11 of the neck 11.
b, and the cap 4 is rotated in the tightening direction. Then, the cap 4 has an inclined surface a2 of the locking projection 44 due to the elastic deformation of the skirt portion.
1c while rotating over the inclined surface b2. And
When the cap 4 is strongly tightened so that the needle plug 2 is elastically deformed and watertightness in the container body 1 is maintained, the locking projection 44 of the cap 4 gets over the ratchet claw 11c of the neck 11 and the locking projection 44 The upright surface a1 abuts the upright surface b1 of the ratchet pawl 11c, whereby the cap 4 is locked so as not to be able to reverse. Then, the cap cover 3 covers the pulling operation piece 14 of the cap 4, and is detachably attached to the engaging projection 4 a on the outer peripheral surface of the cap 4.

In the state where the cap 4 is fastened and the cap cover 3 is mounted, even if the cap cover 3 is detached and a sharp object is stabbed into the slit portion 24 in a mischievous manner, the sharp object is raised by the rising ring. Obstructed by wall 34. Further, even if a sharp object is forcibly pierced through the rising ring wall 34 or pierced into the slit portion 24 from the inside of the rising ring wall 34, the tip of the pierced sharp object is turned into the neck 11. Is prevented by the upper end edge of the spout or the outer peripheral surface of the protective bead 11a located thereon, and does not enter the neck portion 11.

When used, the cap cover 3 protecting the top surface of the cap 4 is removed, and the pulling operation piece 14 is pulled to operate the cap 4.
The slit 24 on the top surface is broken to expose the upper surface of the needle plug 2. Then, the infusion needle 5 is inserted into the exposed surface (see FIG. 4).

After use, the container body 1, the needle plug 2 and the cap 4 are made of a material that can be incinerated, so that they are discarded together without having to be separated.

[0033]

As described above, the present invention can be incinerated without separating the cap and the needle plug from the container main body, and can be mischievous due to such disposability and the slit for breaking. The safety that the contents liquid is not contaminated and there is no such danger can be achieved only by selecting the arrangement position of the slit portion, and the structure is simple and inexpensive. In addition, when a protective bead having the upper end edge inner peripheral side protruding upward is provided around the neck as in claim 2, a sharp tip penetrated from the slit penetrates the needle stopper and the neck portion. Since it is prevented from entering the inside, safety is further improved. Further, when the rising ring wall is provided along the outer edge of the slit portion formed by the groove portion as in claim 3, the rising ring wall prevents a sharp-pointed object from being laid in the groove portion and pierced. As described above, the safety is improved. Moreover, the fastening state of the cap is performed by locking the locking projection to the ratchet pawl as in claim 4. In such a case, the locking projection and the ratchet pawl can be integrally formed with the cap or the container body. The structure is simple, and although it is a screw-in system, it can be firmly fixed without loosening or reverse rotation, so that there is no liquid leakage and there is no need to worry about this. Therefore, the cap and the needle plug can be incinerated together with the container body by the above, and moreover, it is mischievous,
Even if a sharp object is inserted, the content liquid is not contaminated by the sharp object and is safe, and it is possible to newly provide a simple capping structure of an infusion container which can maintain water tightness.

[Brief description of the drawings]

FIG. 1 is an example of a crown structure of a synthetic resin container for infusion according to the present invention, in which (a) is an enlarged longitudinal sectional view showing a main part, and (b) is a BB line in (a). Sectional view.

FIG. 2 is an enlarged longitudinal sectional view showing a state where a sharp object (infusion needle) is temporarily inserted into a slit portion of a cap.

FIG. 3 is an exploded perspective view of the crown structure of the synthetic resin container for infusion.

FIG. 4 is a perspective view showing a state in which a required range of a top surface of a cap is broken by operating a pulling operation piece in the capping structure of the synthetic resin container for infusion.

FIG. 5 is a longitudinal sectional view showing an example of a conventional capping structure of a synthetic resin container for infusion.

FIG. 6 is an exploded perspective view showing the capping structure of the conventional synthetic resin container for infusion.

[Explanation of symbols]

 1: container body 2: needle plug 3: cap cover 4: cap 11: neck 11a: protective bead 11b: threaded portion 11c: ratchet claw 14: pulling operation piece 24: slit portion 34: rising ring wall 44: engagement Stop projection 54: Screw part E: Upper edge area

Claims (4)

[Claims] 1. A neck portion of a synthetic resin container for infusion has a cap structure in which a spout is covered with a cap in a state where a needle plug is inserted, and the cap is formed of a synthetic resin. A sealing portion for a synthetic resin container for infusion, wherein a slit portion which is broken by operation of a pulling operation piece is provided, and when the crown is covered, the slit portion is arranged at a position within an upper end region of a spout of the neck. 2. The capping structure of a synthetic resin container for infusion according to claim 1, wherein a protective bead having an upper end edge inner peripheral side of the neck portion projecting upward is provided around the neck. 3. The capping structure of a synthetic resin container for infusion according to claim 1, wherein the slit is a groove, and a rising ring wall is provided along the outer edge of the groove. 4. The cap has locking projections projecting at equal intervals below the inner peripheral surface thereof, and has a threaded portion formed above the locking projections, and is formed with a threaded portion at the neck of the container body. By screwing, the ratchet pawl formed below the threaded portion of the neck engages with the locking projection, and the screwing of the threaded portion to the threaded portion is fastened. 4. A lock that cannot be reversely screwed into the open crown and cannot be rotated.
A capping structure of the synthetic resin container for infusion according to any one of claims 1 to 7.