JP3368382B2 - Composite lid for chemical container - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound lid for a drug solution container, and more particularly, for a drug solution container in which an annular locking jaw is formed on the outer peripheral surface of the mouth and neck. The present invention relates to a composite lid including a stopper, an inner lid fitted to the inner stopper, and an outer lid fitted to the inner lid.

[0002]

2. Description of the Related Art As a lid for a drug solution container containing a drug solution such as an infusion drug solution or an injectable drug solution, a composite lid including an inner stopper, an inner lid and an outer lid is widely put into practical use as well known to those skilled in the art. Have been served. A typical example of such a composite lid is the composite lid disclosed in Japanese Utility Model Publication No. 48-31094. In this composite lid, the inner stopper made of rubber has a circular main portion, and the lower surface of the peripheral edge portion of the circular main portion is attached to the mouth and neck by bringing the lower surface of the peripheral portion into close contact with the top surface of the mouth and neck. The inner lid is formed of a thin metal plate and has an annular top wall and a cylindrical skirt wall depending from the peripheral edge of the annular top wall. Such an inner lid is fitted on the inner plug, and the lower end of the skirt wall is bent inward in the radial direction and is locked to the locking jaw of the mouth and neck. The outer lid is made of an appropriate synthetic resin and has a circular top wall and a cylindrical skirt wall hanging from the peripheral edge of the circular top wall. An annular sealing ridge is formed on the inner surface of the top wall of the outer lid, the outer lid is fitted on the inner lid, and the annular sealing ridge of the outer lid is peelably bonded to the outer surface of the annular top wall of the inner lid. To be done.

When using the liquid medicine contained in the liquid medicine container, the outer lid is displaced upward to separate the annular sealing ridge of the outer lid from the top wall of the inner lid, and thus the outer lid is removed. . As a result, the central portion of the rubber inner stopper is exposed through the opening existing in the central portion of the top wall of the inner lid, and therefore the infusion tube for injection or the injection needle is passed through the central portion of the inner stopper to use the drug solution. can do.

[0004]

In a composite lid for a drug solution container, a nurse or the like can easily detach the outer cover to expose the inner plug when using the drug solution, and retort treatment. It is necessary to satisfy the basic requirement that water droplets and the like can be sufficiently and reliably prevented from entering the upper surface of the central portion of the inside plug during heat sterilization treatment at 110 ° C. for 15 minutes. is there. in addition,
In recent years, from the viewpoint of environmental protection, after using a chemical solution, the rubber inner stopper, metal inner lid and synthetic resin outer lid can be easily separated from the mouth and neck separately and reused separately. It is desired that it can be treated as a resource or a waste.

However, with the conventional composite lids described above, it is extremely difficult, if not impossible, to remove the inner lid from the mouth and neck, and thus to remove the inner lid and inner plug from the mouth and neck. It is extremely difficult to satisfy the above demands recently.

The present invention has been made in view of the above facts, and its main technical problem is to satisfy the above basic requirements required for a composite lid for a liquid medicine container and to use a liquid medicine. After that, the inner lid and the inner stopper can be easily and separately removed from the mouth and neck, respectively, and thus, the above-mentioned demand from the viewpoint of environmental protection can be satisfied, and thus the composite lid for the drug solution container. Is to provide.

[0007]

In order to achieve the above main technical problems, in the present invention, a grip piece protruding from the lower end of the skirt wall of the metal inner lid is attached to the skirt wall of the metal inner lid, and A pair of weakening lines is formed on the skirt wall and the top wall, extending upward from the lower end of the skirt wall on both sides of the grip piece and then extending along the peripheral edge of the top wall.
Then, the annular sealing ridges arranged on the inner surface of the top surface wall of the outer lid are releasably adhered to the outer surface of the top surface wall of the inner lid in the region radially inward of the pair of weakening lines.

That is, according to the present invention, as a compound lid that achieves the above-mentioned main technical problems, a rubber-made medium lid for a chemical liquid container in which an annular locking jaw is formed on the outer peripheral surface of the mouth and neck is provided. A composite lid comprising a stopper, an inner lid made of a thin metal plate fitted to the inner lid, and an outer lid made of synthetic resin fitted to the inner lid, the inner stopper including a circular main portion, and the circular main portion. The lower surface of the peripheral portion of the portion is in close contact with the top surface of the mouth / neck portion, the inner lid covers an upper surface of the main portion of the inside plug, and a cylindrical skirt wall that hangs from the peripheral edge of the top surface wall. And a gripping piece projecting from the lower end of the skirt wall, the lower end of the skirt wall being bent inward in the radial direction and being locked to the locking jaw of the mouth / neck part. A pair of top walls extends upward from the lower end of the skirt wall on both sides of the grip piece and then extends along the peripheral edge of the top wall. A weakening line is formed, the outer lid includes a circular top surface wall and an annular sealing ridge formed on an inner surface of the circular top surface wall, and the annular sealing is provided in an area radially inward of the pair of weakening lines. A composite lid is provided in which a ridge is releasably adhered to the outer surface of the annular top wall of the inner lid.

The outer lid includes a cylindrical skirt wall that hangs from the peripheral edge of the circular top wall, and a plurality of protrusions are formed on the inner surface of the skirt wall at intervals in the circumferential direction. Conveniently, the inner diameter defined by the tip is set to be substantially the same as the outer diameter of the skirt wall of the inner lid.

[0010]

In the composite lid of the present invention, when a chemical solution is used, the outer lid is displaced upward so that the annular sealing ridge of the outer lid is peeled off from the top wall of the inner lid, as in the conventional composite lid. Thus, the outer lid is removed to expose the central portion of the inner stopper. After using the drug solution by penetrating the infusion tube or injection needle into the center of the inner stopper, grasp the gripping piece of the inner lid and pull it outward or upward in the radial direction to break the pair of weakening lines. . Thus, the locking of the inner lid with the locking jaw of the mouth / neck portion is sufficiently released, and the inner lid can be removed from the mouth / neck portion. When the inner lid is removed from the mouth and neck, the inside plug can be removed from the mouth and neck with sufficient ease. In the state before the outer lid is removed, the annular sealing ridges of the outer lid are bonded to the outer surface of the top wall of the inner lid in the region radially inward of the pair of weakening lines. Due to the above, the hermeticity at the time of retort processing is not deteriorated.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS In the following, a more detailed description will be given with reference to the accompanying drawings showing a preferred embodiment of a composite lid constructed according to the present invention.

Referring to FIGS. 1 and 2, the composite lid, generally designated by reference numeral 2, is applied to the mouth / neck portion 4 of a drug solution container which can be formed of glass or an appropriate synthetic resin. The mouth / neck portion 4 of the chemical liquid container has a substantially cylindrical shape, and an annular locking jaw 6 bulging in the radial direction is formed on the outer peripheral surface thereof. The composite lid 2 includes an inner stopper 8, an inner lid 10 and an outer lid 12.

Referring to FIG. 5 together with FIG. 1, an inner plug 8 which can be integrally formed from an appropriate synthetic rubber or natural rubber is a circular main portion 14 and a cylinder hanging from the lower surface of the main portion 14. And a hanging portion 16. The outer diameter of the main portion 14 is substantially the same as the outer diameter of the mouth / neck portion 4, and the outer diameter of the hanging portion 16 is substantially the same as the inner diameter of the mouth / neck portion 4. A circular recess 17 is formed in the center of the main portion 14.
Inside, a plurality of thin-walled portions, that is, one thin-walled portion 18 located in the center and three thin-walled portions 20 arranged at equal intervals around the thin-walled portion 18 are formed. As for the inside plug 8 which is a known form per se, the hanging part 16 is inserted into the mouth / neck portion 4, and the lower surface of the peripheral portion of the main portion 14 is brought into close contact with the upper surface of the mouth / neck portion 4 to form the mouth / neck portion. It is attached to 4. The infusion tube for infusion or the injection needle (not shown) has a thin portion 18 or 2
0 is penetrated and it is made to enter in a liquid medicine container.

Referring to FIGS. 1 and 4, the illustrated inner lid 10 is integrally formed from a suitable metal thin plate such as an aluminum thin plate, a chromic acid treated steel thin plate or a tin plate. The inner lid 10 has an annular top wall 22 and a cylindrical skirt wall 24 hanging down from the peripheral edge of the top wall 22 (in the figure, the outer lid 12 and the inner lid 10 are attached to the mouth / neck portion 4 of the drug solution container). Therefore, although the lower end of the skirt wall 24 of the inner lid 10 is bent inward in the radial direction, the state before the inner lid 10 is attached to the mouth / neck portion 4 of the drug solution container together with the outer lid 12 is shown. In the above, the lower end of the skirt wall 24 of the inner lid 10 also extends substantially vertically downwards following the upper end). A relatively large circular opening 26 is defined in the center of the annular top wall 22. The inner lid 10 is also formed with a gripping piece 28 protruding from the lower end of the skirt wall 24. The grip piece 28 has a substantially rectangular connecting base portion and a ring-shaped main portion. A pair of weakening lines 30 and 32 are formed on the skirt wall 24 and the top wall 22 of the inner lid 10. The pair of weakening lines 30 and 32 are
On both sides of the gripping piece 28, it extends upward from the lower end of the skirt wall 24 across the skirt wall 24, then along the peripheral edge of the top wall 22 in a generally arcuate shape, and further into the skirt wall 24 to enter the skirt. The wall 24 extends to a substantially middle portion in the axial direction. The pair of weakening lines 30 and 32 may be so-called scores formed by locally thinning a metal material. Such an inner lid 10 is combined with an outer lid 12 to be described in detail below as required, and then fitted on the mouth / neck portion 4 already containing a drug solution and fitted with the inner stopper 8, and the skirt wall 24. Is bent inward in the radial direction to be locked by the locking jaw 6 of the mouth / neck 4 and attached to the mouth / neck 4.

Continuing with the description with reference to FIGS. 1, 2 and 4, the outer lid 12 is formed from a suitable synthetic resin such as polypropylene or polyethylene. Such outer lid 12
Has a circular top wall 34 and a cylindrical skirt wall 36 depending from the peripheral edge of the top wall 34. An annular sealing ridge 38 is formed on the inner surface of the top wall 34. Skirt wall 36
The lower end portion of the skirt wall 36 is formed with an overhanging flange portion projecting outward in the radial direction, and the lower end portion of the skirt wall 36 is made relatively thick. On the inner peripheral surface of the lower end portion of the skirt wall 36, a plurality of (for example, four) arc-shaped projections 40 are formed at equal intervals in the circumferential direction. The inner diameter D1 defined by the tip of the arc-shaped projection 40 is equal to the inner lid 1
It is set to be substantially the same as the outer diameter D2 of the 0 skirt wall. Such an outer lid 12, as clearly shown in FIG.
It is fitted onto the inner lid 10. Then, the annular sealing protrusion 38 of the outer lid 12 is releasably adhered to the outer surface of the top wall 22 of the inner lid 10. The peelable adhesive is applied to the top wall 2 of the inner lid 10.
This can be conveniently performed by applying an appropriate adhesive coating to the area to be adhered 2 and applying high-frequency induction heating while pressing the annular sealing projection 38 against the outer surface of the top wall 22 of the inner lid 10. As the above-mentioned adhesive coating, Japanese Patent Application Laid-Open No. 1-31
The cohesive failure adhesive-containing coating disclosed in 7747 is conveniently used. Skirt wall 36 of outer lid 12
The protrusion 40 formed on the inner peripheral surface of the inner cover 10 contacts the outer peripheral surface of the skirt wall 24 of the inner lid 10 when the outer lid 12 is fitted onto the inner lid 10, and the outer lid 12 is centered with respect to the inner lid 10. To match. As clearly shown in FIG. 3, the top wall 2 of the inner lid 10 is shown.
The pair of weakening lines 30 and 32 extending 2
Are located radially outward of the annular sealing ridges 38 of the outer lid 12. In other words, the annular sealing ridge 38 of the outer lid 12
Is bonded to the outer surface of the top wall 22 of the inner lid 10 in a region radially inside of the pair of weakening lines 30 and 32.

As will be clearly understood with reference to FIG. 1, the lower end of the skirt wall 24 of the inner lid 10 is locked to the locking jaw portion 6 of the mouth / neck portion 4 so that the inner lid 10 is closed.
The inner plug 8 is held in the mouth / neck portion 4 with sufficient reliability as required, and the mouth / neck portion 4 is sealed. Then, since the annular sealing protrusion 38 of the outer lid 12 is adhered to the top wall 22 of the inner lid 10,
The region of the top wall 22 of the inner lid 10 that is radially inward of the annular sealing ridges 38 of the outer lid 12 is sealed from the outside with sufficient certainty, and therefore, in the central portion of the top wall 22 of the inner lid 10 during retort treatment or the like. Water droplets and the like can be reliably prevented from entering the central portion of the upper surface of the inner plug 8 exposed to the defined opening 26. Since the pair of weakening lines 30 and 32 formed on the top wall 22 of the inner lid 10 are arranged in the radially outer region of the annular sealing ridge 38, they are caused by the presence of the pair of weakening lines 30 and 32. And then annular sealing protrusion 3
8 does not deteriorate the sealing property.

When using the liquid medicine contained in the liquid medicine container, first, the outer lid 12 is moved upward by, for example, applying a finger to the thick lower end of the skirt wall 36 of the outer lid 12 and pushing it upward. The annular sealing projection 3 of the outer lid 12 is displaced.
8 is peeled off from the top wall 22 of the inner lid 10, and the outer lid 12 is removed from the mouth / neck portion 4. Thus, as shown in FIG. 4, the central portion of the inner plug 8 is exposed through the circular opening 26 defined in the central portion of the top wall 22 of the inner lid 10. Therefore, the thin portion 1 formed in the central portion of the inner plug 8
A drip infusion tube or an injection needle (not shown) is passed through 8 to 20, and thus the drug solution contained in the drug solution container can be used as a drip or an injection solution.

After the chemical solution is used, the gripping piece 28 of the inner lid 10 is gripped and pulled outward or upward in the radial direction to break the pair of weakening lines 30 and 32 of the inner lid 10. Thus, the engagement of the lower end of the skirt wall 24 of the inner lid 10 with respect to the engagement jaw 6 of the mouth / neck 4 is released,
As shown in FIG. 5, the inner lid 10 is removed from the mouth / neck portion 4 by pulling the gripping piece 28 further upward. After that, put a finger on the main portion 14 of the inner stopper 8
The inner plug 8 can also be removed from the mouth / neck portion 4 by pulling upward. Thus, the rubber inner plug 8, the metal thin plate inner lid 10 and the synthetic resin outer lid 12 can be separately and easily removed from the mouth / neck portion 4 and appropriately treated.

In order to make the removal of the outer lid 12 easier, a gripping piece 42 which projects radially outwardly from the lower end of the skirt wall 36, as shown in FIG. 6, is provided, if necessary. Alternatively, as shown in FIG. 7, a grip piece 44 projecting downward from the lower end of the skirt wall 36 may be integrally formed, and the grip piece 42 or 44 may be gripped so that the outer lid 12 can be pulled. it can. When assembling the outer lid 12 with the inner lid 10 as described above, the gripping pieces 42 or 44 of the outer lid 12 are conveniently positioned at an angular position aligned with the gripping pieces 28 of the inner lid 10.

[0020]

INDUSTRIAL APPLICABILITY In the composite lid of the present invention, when using a liquid medicine, a nurse or the like can easily detach the outer lid from the mouth and neck of the liquid medicine container to expose the inner plug. In the retort process or the like, water droplets and the like can be sufficiently and reliably prevented from entering the upper surface of the central portion of the inside plug. In addition, after the use of the chemical solution, not only the outer lid but also the rubber inner plug and the metal thin plate inner lid can be easily and separately removed from the mouth and neck separately and independently.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a compound lid configured according to the present invention is attached to the mouth and neck of a liquid medicine container.

FIG. 2 is a perspective view showing a state in which the composite lid of FIG. 1 is attached to the mouth and neck of a liquid medicine container.

FIG. 3 is a plan view showing an inner lid and an outer lid of the composite lid of FIG. 1 before being attached to a chemical liquid container.

FIG. 4 is a perspective view showing a state in which the outer lid is detached from the state shown in FIG.

5 is a perspective view showing a state in which the inner lid is further removed from the state shown in FIG.

FIG. 6 is a perspective view showing a modified example of the outer lid.

FIG. 7 is a perspective view showing still another modified example of the outer lid.

[Explanation of symbols]

2: Compound lid 4: Mouth and neck of drug solution container 6: Annular locking jaw 8: Inside plug 10: Inner lid 12: Outer lid 14: Circular main part of inner stopper 16: Cylindrical hanging part of inner plug 22: Ring top wall of inner lid 24: Cylindrical skirt wall of inner lid 26: Circular opening of inner lid 28: Grasping piece of inner lid 30: Weakening line of inner lid 32: Weakening line of inner lid 34: Circular top surface wall of outer lid 36: Cylindrical skirt wall of outer lid 38: Annular sealing ridge of outer lid 40: Protrusion of outer lid

Continuation of the front page (56) References JP-A 1-213167 (JP, A) Actually open 2-77043 (JP, U) Actually open 64-55262 (JP, U) Actually open 1-80138 (JP , U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61J 1/05 A61M 39/00 B65D 51/18

Claims (2)

(57) [Claims] 1. A rubber inner stopper, a metal thin plate inner lid fitted to the inner stopper, and the inner portion, for a liquid medicine container in which an annular locking jaw is formed on an outer peripheral surface of a mouth / neck portion. A composite lid having a synthetic resin outer lid fitted to the lid, wherein the inner plug includes a circular main portion, and a lower surface of a peripheral portion of the circular main portion is in close contact with a top surface of the mouth / neck portion, The inner lid includes an annular top wall that covers an upper surface of the main portion of the inner plug, a cylindrical skirt wall that hangs from a peripheral edge of the top wall, and a gripping piece that projects from a lower end of the skirt wall. The lower end of the wall is bent inward in the radial direction and locked to the locking jaw of the mouth / neck, and the skirt wall and the top wall are provided on both sides of the gripping piece upward from the lower end of the skirt wall. A pair of weakening lines that extend and then extend along the peripheral edge of the top wall is formed, and the outer lid includes a circular top wall and a circular top wall. An annular sealing ridge formed on an inner surface, the annular sealing ridge being releasably bonded to an outer surface of the annular top wall of the inner lid in a region radially inward of the pair of weakening lines. , A composite lid characterized by the following. 2. The outer lid includes a cylindrical skirt wall that hangs from the peripheral edge of the circular top wall, and a plurality of projections are formed on an inner surface of the skirt wall at intervals in the circumferential direction. The composite lid according to claim 1, wherein the inner diameter defined by the tips of the protrusions is set to be substantially the same as the outer diameter of the skirt wall of the inner lid.