JP2004168423A - Pollution preventive cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pollution preventive cap which is structured to surely keep a container storing a liquid airtight before it is opened being mounted thereon and to prevent the inside of the container from being polluted after it is opened. <P>SOLUTION: This pollution preventive cap is provided with a base member 7 able to be mounted on an eye dropper A able to store a liquid, an over cap 8 able to be mounted on the member 7, a push-in member 9 which is inserted and held by the member 7 freely movably relative to the member 7, is provided on its side face with a groove 91 for guiding the liquid outside and is pushed toward the dropper A side by the over cap 8 for releasing the sealed condition of the dropper A, and a first tight contact member 11 provided at the tip end 77 of the member 7 allowing the flow out of the liquid tightly and outwardly in contact with the member 9. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a contamination prevention cap to be attached to a medical ophthalmic container (hereinafter, simply referred to as “ophthalmic container”) or the like that accommodates a medical ophthalmic solution so that it can be instilled.

  Conventional eye drops, particularly eye drops used for administration of medical solutions such as medical eye drops, for example, a liquid injection cylinder is mounted on a container body formed in a hollow cylindrical shape, and is mounted on the container body. A so-called three-piece type eye drop, which is formed of three members as a whole including the cap, or as shown in FIG. 8, the liquid injection cylinder 6 and the container body 10 are integrally formed by blow molding or vacuum molding. A so-called bottle pack eye dropper X or the like in which a cap B is attached to an integrally formed eye drop container A formed by screwing or fitting is commonly used. In addition, there has been known an apparatus in which an inner stopper provided with the injection port 6 is attached to a tip of the injection cylinder 6 (for example, see Patent Document 1). As a material of such eye drops X, a soft thermoplastic resin is used because of ease of molding and the like.

  In the case of this type of eye drop device X, when the medicinal solution in the eye drop container A is administered, the body 2 of the eye drop container A (container main body 10) is gripped with two fingertips, and the liquid inlet of the eye drop container A is injected. 6a is held in the administration posture facing the eye of the administration subject, and while maintaining this posture, the body portion 2 is pressed toward the container axis, whereby the liquid medicine is supplied dropwise from the injection port 6a.

Japanese Utility Model Publication No. 39-11991 (FIGS. 1-2)

  Since the medicinal solution, particularly a medical ophthalmic solution, is directly administered to the eye, which is a particularly sensitive organ in the human body, it is strictly required to keep it sterile until instillation. Therefore, each of the above-mentioned eye drop components is sterilized by a steam sterilization method, an EO gas sterilization method, or the like, and the chemical solution is sterilized by a filtration sterilization method using a membrane filter or the like. Must be filled aseptically.

  According to the eyedropper (for example, the integrally molded eyedropper) in the above-described conventional eyedropper, after the medicinal solution is aseptically filled in the eyedropper, a cap is attached to the eyedropper and the eyedropper is sealed. This can prevent direct contact between the external air and the liquid medicine inside the eye drop container, so that the liquid medicine can normally be kept in a sterile state until the cap is released and the eye drops are applied.

However, when the medicinal solution is dropped from the liquid inlet after opening the eyedropper container, external air flows into the eyedropper from the liquid inlet by the amount of the administered medicinal solution. At this time, aseptic conditions inside the eye drop container cannot be ensured by microorganisms and the like contained in external air, and the inside of the eye drop container may be contaminated (contamination inside the container after opening the eye drop container).
In order to avoid such contamination inside the container, a method in which a preservative is added to the drug solution in advance and then stored in the eyedropper container (preservation of the drug solution) is widely used.

  On the other hand, attempts have been made to prevent microorganisms and the like contained in the outside air from being taken into the eyedropper. The present invention has been made from this viewpoint.

  In order to prevent contact with the outside air, eye drop containers that can reliably maintain a sealed state until use are widely used, such as a completely integrated sealed eye drop container that is not provided with the liquid inlet for discharging a drug solution in advance. However, it is desirable to have a cap that can be suitably attached to such an eye drop container. Further, even if the liquid injection port is provided in advance, it is desirable that the eyedrops be configured so that the sealed state can be reliably maintained until use.

  Therefore, an object of the present invention is to provide a cap which has a configuration to be surely maintained in a sealed state until the container is opened by being attached to a container containing a liquid and prevents contamination in the container after opening. is there.

(Configuration 1)
A first characteristic configuration of a contamination prevention cap according to the present invention for achieving the above object includes a base member attachable to a container body capable of containing a liquid, and an overcap attachable to the base member, The container body is inserted and held in the base member so as to be slidable with respect to the base member, has a groove on its side surface for guiding the liquid to the outside, and the overcap is used to release the sealed state of the container body. A push member that can be pushed into the side, and a first close member provided at a tip end portion of the base member so as to be in close contact with the push member from the outside and allow the outflow of the liquid, The operation and effect are as follows.

  By configuring the contamination prevention cap of the present invention with the base member, the overcap, the pushing member, and the first close member, if the cap is attached to the container body containing the liquid, the container is opened. A configuration in which the sealed state is reliably maintained until time can be achieved. This is for the following reason.

  For example, the container main body containing the liquid is a sealed container main body, and the cap is attached to the sealed container main body by attaching the base member, and when used, the cap is attached to the base member. By the overcap, the posture of the pushing member is changed from a non-pushing posture in which the pushing member is not pushed into the container body to a pushing posture in which the pushing member is pushed into the container body. Since the sealed state of the container main body is released, the liquid stored in the container main body can flow out of the container main body.

  That is, when the anti-contamination cap of the present invention is attached to the sealed container body, the operation of pushing the pushing member is not performed when not in use, so that the contact between the liquid before opening the container and the external air is prevented. Thus, the sealed state can be reliably maintained until the container is opened. Then, by the operation of pushing the pushing member, the cap is fitted into the container body, and the sealed state of the container body can be reliably released.

  Further, the container main body containing the liquid is not limited to the sealed container main body, and even if the liquid injection port is provided in advance, the sealed state is kept until the time of use by fitting the pushing member into the liquid injection port. If it is configured to be able to reliably maintain, when not in use, since the operation of pushing the pushing member is not performed, contact between the liquid before opening the container and the external air is prevented, and it is ensured until the container is opened. A sealed state can be maintained. Then, by the operation of pushing the pushing member, the cap is fitted into the container body, and the sealed state of the container body can be reliably released.

  The liquid that has flowed out of the container body is guided to the outside by a groove provided on the side of the pushing member. At this time, it is possible to prevent the liquid from flowing out through a path other than the groove. Therefore, liquid leakage from the container body during use can be suppressed.

  Further, the first close member and the pushing member, which are provided at the distal end portion of the base member and are in close contact with the pushing member from the outside, are easily separated by the pressure of the liquid guided by the groove. As a result, the liquid can flow out to the outside, so that the liquid can be easily provided.

  When the pressing of the body of the eyedropper is stopped after the desired amount of liquid has flowed out, the first close member and the pushing member return to the close state. At this time, it is possible to prevent external air from flowing into the eye drop container. Therefore, by applying the cap of the present configuration, after the desired amount of liquid has flowed out, the path through which the external air flows into the container main body is blocked, so that the microorganisms contained in the external air after the container is opened. And the like can be prevented from being taken into the ophthalmic container, and contamination in the container after opening the container can be prevented.

(Configuration 2)
A second characteristic configuration of the contamination prevention cap according to the present invention is that, in addition to the first characteristic configuration, the pushing member has a needle-shaped one end on the container body side. The effects are as follows.

  In other words, even in a sealed container that can reliably maintain a sterile state until the time of use, the push member is pushed from a non-push position by forming one end of the push member at the side of the container body in a needle shape. By changing the posture to the posture, the sealed state can be easily and reliably released.

(Configuration 3)
A third characteristic configuration of the contamination prevention cap according to the present invention is characterized in that, in addition to the first or second characteristic configuration, a protrusion that suppresses deformation of the first close member toward the base member is provided. The projecting portion is distributed at the distal end portion, and the projecting portion is arranged close to the first close member. The operation and effect are as follows.

When the pushing member is in the pushing posture, the first close member may be deformed toward the base member due to friction between the pushing member and the first close member. However, when the first close member is deformed toward the base member side, if the protrusions are dispersedly arranged at the distal end of the base member, the first close member, the protrusion, and the base member It will abut almost evenly around the tip. Therefore, even if the first close member is deformed, it is difficult to cause irregular deformation. Therefore, it is possible to prevent the chemical solution from flowing out unevenly.
Furthermore, if the protruding portion is disposed close to the first close member, the first close member immediately contacts the protruding portion when the first close member attempts to deform toward the base member side. Thus, the movement of the first close member can be stopped. Therefore, even if the first close member is deformed, it can be suppressed to a slight deformation.

(Configuration 4)
A fourth characteristic configuration of the contamination prevention cap according to the present invention is such that, in addition to any one of the first to third characteristic configurations, the pushing member is held by the pushing member and the base member in a state where the pushing member is pushed. The operation and effect are as follows.

  That is, when the cap is attached to the eye drop container, the base member and the eye drop container (for example, the inner plug) come into contact with each other. At this time, since the base member and the inner plug portion are not tightly adhered, there is a possibility that external air flows in.

  In this configuration, in a state where the pushing member is pushed in, by providing a sealing member held by the pushing member and the base member, external air that is going to flow from between the cap and the eye drop container is provided. It can be reliably shut off. Therefore, it is possible to prevent the contamination of the liquid medicine inside the eye drop container by air, so that the contamination of the liquid medicine can be effectively prevented.

  Further, since the sealing member is held between the pushing member and the base member in a state where the pushing member is pushed, the sealing member is pressed by the pushing member when the pushing member is in the pushing posture. Will be done. Therefore, the pressing of the sealing member can be avoided until the time of use, so that the shape of the sealing member and the external air blocking function can be favorably stored without deterioration until the time of use.

(Configuration 5)
According to a fifth characteristic configuration of the contamination prevention cap according to the present invention, in addition to the fourth characteristic configuration, the base member includes a first base member and a second base member, and the pressing member is pressed. In the previous state, the outer periphery of the sealing member is fixed by the first base member and the second base member, and the operation and effect are as follows.

  That is, by fixing the outer periphery of the sealing member with the first base member and the second base member, the posture of the sealing member can be stabilized. Therefore, when the pushing member is in the pushing posture, the sealing member can be prevented from being held in the abnormal posture by the first base member and the second base member, and the external air blocking function can be reliably achieved. Can be demonstrated.

(Configuration 6)
The sixth characteristic configuration of the pollution prevention cap according to the present invention, in addition to any one of the first to fifth characteristic configurations, is that the overcap includes a cap body and a cutout portion that is cut off from the cap body. The cap is formed so that the cap can be brought into contact with the base member when the cap is pushed in after the cutout is removed. The operation and effect are as follows.

  That is, since the overcap is formed by the cap body and the cutout cut out from the cap body, the cap body is pushed toward the container body unless the cutout section is removed from the cap body. Cannot be pushed (pushed posture).

  Therefore, before the use of the eyedropper container, the cutout portion is in contact with the base member, so that the pushing member can be prevented from being pushed in. Further, when the eyedropper container is used, the cap is used. Since the body is in contact with the base member, it is possible to prevent the pushing member from being pushed more than necessary.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those in the conventional example indicate the same or corresponding portions.

  FIGS. 1 to 7 are schematic views of a main part of an eye drop X mainly used for medical use and respective members constituting the eye drop X. The eye drop X is composed of an eye drop container A having a container body 10 capable of mainly storing a medical solution such as a medical eye drop as a liquid, and a cap B detachable from the eye drop container A.

The eye dropping container A is a container in which a liquid injection cylinder is attached to a container main body formed in a hollow cylindrical shape, or an integrated liquid in which the liquid injection cylinder and the container main body are integrally formed by blow molding, vacuum molding, or the like. Molded eyedrop containers A and the like are widely used.
In this embodiment, for example, as shown in FIG. 1, an eyedropper container A in which an inner plug 61 provided with the liquid injection port 61 a at the tip of the liquid injection tube 6 is attached is exemplified. Therefore, the combination of the container body 10 and the inner plug 61 is an eyedropper container (eyedropper with inner plug) A.

  Here, the shape of the eyedropper container A with an inner stopper (hereinafter, simply referred to as an eyedropper container A) is the shape due to the restoring property of the eyedropper container A itself after the medicinal solution is dropped from the injection port 61a. Attempts to return the drug solution to the state prior to instillation. At this time, external air flows into the eye dropping container A containing the liquid medicine from the liquid injection port 61a by an amount corresponding to the administered liquid medicine.

  Therefore, in order to prevent air from flowing into the eyedropper A after the medicinal solution is instilled from the liquid injection port 61a, two embodiments are exemplified in the present embodiment.

  As a first embodiment, there is an embodiment in which the body 2 is formed in a bellows shape. With this configuration, when the medicinal solution is dropped, the bellows portion shrinks by the amount of the administered medicinal solution, and if this state is maintained, external air flows from the liquid inlet 61a into the eyedrop container A. Inflow can be prevented.

  As a second embodiment, there is a case where the container body 10 has a double structure having an outer layer and an inner layer, and a vent hole for introducing external air is provided in the outer layer. At this time, as the constituent material of the inner layer, it is preferable to use a material whose shape is hardly restored as compared with the outer layer. With such a configuration, even after the medicinal solution is dropped and administered, even if external air is introduced from the vent hole and the outer layer returns to the state before the medicinal solution is dropped and administered, the inner layer is hardly restored in shape. Therefore, the external air is not introduced, and the shape of the inner layer can be maintained after the medicinal solution is dropped. Therefore, it is possible to prevent external air from flowing into the eyedropper A from the liquid injection port 61a.

In the present embodiment, an example in which the body 2 is formed in a bellows shape will be described.
Accordingly, the eyedropper A has a circular bottom portion 1 that curves inward, a hollow cylindrical and bellows-shaped body portion 2 connected to the periphery of the bottom portion 1, and a cylindrical shape that is continuous with a shoulder portion 2a of the body portion 2. It comprises a neck portion 3 and a liquid injection tube portion 6 continuous above the neck portion 3. An external thread 6 a is provided on the outer periphery of the liquid injection tube 6. At the tip of the liquid injection cylinder 6, an inner plug 61 provided with the liquid injection port 61a is mounted.

As a constituent material of the eye drop container A, there is a thermoplastic material such as polyethylene, polyethylene-polypropylene, polypropylene, polyethylene terephthalate, and polycarbonate, and the like, and the entire molded eye drop container A is configured to be elastically deformable.
When the container body 10 has an outer layer and a double structure having an inner layer, the constituent material of the outer layer is the thermoplastic material, and the constituent material of the inner layer is nylon, polyethylene, polypropylene, polyethylene terephthalate, or the like. .

  Here, the configuration in which the inner plug portion 61 is provided at the tip of the liquid injection tube portion 6 is compared with the case where the liquid injection port 61a is directly formed in the liquid injection tube portion 6 by applying blow molding, vacuum forming, or the like. It is widely used for reasons such as lower manufacturing costs. The inner plug 61 is attached so as to be in close contact with the liquid injection tube 6 so as to prevent the inflow of external air. Therefore, if the pushing member of the cap described later is configured to be fitted into the liquid injection port 61a, the eyedropper container A becomes an eyedropper X capable of maintaining a sealed state until the time of instillation, and the sterile solution is reliably sterilized until the time of instillation. Can be kept in condition.

  Here, the eye drop device X capable of maintaining the sealed state until the time of instillation is not limited to a configuration in which the injection port is provided in advance in the injection tube section 6 and the injection port is closed by a cap member. The liquid injection port may be plugged, or the liquid injection tube section 6 may not be provided with the liquid injection port in advance, and may have any configuration as long as it can reliably maintain a sealed state until use. There may be.

The cap B is configured to be removably screwed into the male screw 6a of the eyedrop container A.
Details of the cap B will be described below.

  That is, as shown in FIG. 1, the cap B includes a base member 7 that can be attached to an eye drop container A that can store a drug solution, and an overcap 8 that can be attached to the base member 7. The overcap 8 is inserted and held in the base member 7 so as to be slidable with respect to the base member 7, has a groove 9 a on a side surface thereof for guiding the liquid to the outside, and seals the eyedropper container A. A pushing member 9 that can be pushed toward the eyedrop container A by the overcap 8 to release the state, and a pushing member 9 provided on the distal end portion 77 of the base member 7 in close contact with the pushing member 9 from the outside. And a close contact member 11.

  Hereinafter, the configuration of each member of the cap B will be described in detail.

(Base member)
The base member 7 is configured to be attachable to the ophthalmic container A containing the drug solution. Therefore, a screw groove 71 that can be screwed into the male screw 6a is formed in the inner peripheral portion of the base member 7.

  Further, the base member 7 has, as an example of a preferred embodiment, a first series of through-holes 72 penetrating in the axial direction of the base member 7 and communicates with the first series of through-holes 72. It is possible to adopt a configuration having a space 73 having a larger diameter than the first communication hole 72. A pushing member 9 to be described later penetrates the base member 7 through the first communication hole 72 and the space 73.

  The base member 7 is provided with a base member first convex portion 74 for mounting an overcap 8 described later on an outer surface thereof. In order to secure the posture, it is possible to provide a base member second convex portion 76 on the inner peripheral wall of the base member 7.

  The constituent material of the base member 7 may be polypropylene, polyethylene, or the like.

  The mounting of the base member 7 and the eyedrop container A is not limited to the mounting method of screwing, and the mounting method of fitting is also applicable. At this time, a configuration (for example, providing a convex portion) that can be fitted and mounted can be appropriately applied to a portion corresponding to the male screw 6a and a portion corresponding to the screw groove portion 71.

  Further, a projecting portion 79 for suppressing deformation of the first close contact member 11 described below to the base member 7 side is dispersedly disposed at a tip end portion of the base member 7, and the projecting portion 79 It is preferable to arrange in close proximity to the close member 11.

When the pushing member 7 is in the pushing posture, the friction between the pushing member 7 and the first close member 11 may deform the first close member 11 toward the base member 7. However, when the first close member 11 is deformed toward the base member 7, if the protrusions 79 are dispersedly arranged at the distal end of the base member 7 (FIG. 3), the first close member 11 And the protruding portion 79 abuts substantially uniformly around the distal end portion of the base member 7. Therefore, even if the first close contact member 11 is deformed, it is difficult to cause irregular deformation. Therefore, it is possible to prevent the chemical solution from flowing out unevenly.
Further, if the protruding portion 79 is disposed close to the first close member 11, if the first close member 11 tries to be deformed toward the base member 7, the first close member 11 The movement of the first close member 11 can be stopped by contact with the portion 79. Therefore, even if the first close member 11 is deformed, it can be suppressed to a slight deformation.

(Over cap)
The overcap 8 is configured to be attachable to the base member 7. The attachment to the base member 7 can be performed by a method such as screwing or fitting. At this time, on the outer surface of the base member 7, a screw groove portion or a convex portion capable of coping with the screwing or fitting of the overcap 8 is formed. In this embodiment, in order to enable fitting and mounting, a first base member convex portion 74 is provided on the outer surface of the base member 7 and an inner convex portion 81 is provided inside the overcap 8.

  Further, as an example of a preferred embodiment of the overcap 8, the cap body 8a and a cutout portion 8b cut out from the cap body 8a are formed. After the cutout portion 8b is removed, the cap body 8a is formed. The cap body 8a can be configured to be able to abut the base member 7 when is pressed.

  That is, the overcap 8 formed by the cap body 8a and the cutout portion 8b is attached to the base member 7, and at this time, the overcap 8 and the pushing member 9 are not pushed into the eyedrop container A side. It is kept in the non-pushed position. Then, the cutout portion 8b is removed by cutting off the cap body 8a (FIG. 2A), and thereafter, the posture of the cap body 8a is changed to a pushing posture in which the cap body 8a is pushed into the eyedrop container A side (FIG. 2 (b)), it is possible to prevent the cap body 8a from contacting the base member 7 and the pushing member 9 from being pushed more than necessary.

  Since the overcap 8 is preferably attached to the base member 7 so as to cover at least a part of the base member 7 including the first close contact member 11 described later, a hollow cylindrical shape is preferable.

  The constituent material of the overcap 8 can be polypropylene, polyethylene, or the like.

  It is preferable to provide an overcap projection 82 on the inner wall at the tip of the overcap 8, into which the annular projection 11 a can enter.

(Push member)
The pushing member 9 is inserted and held in the base member 7 so as to be slidable with respect to the base member 7. Further, the pushing member 9 has a groove 91 on its side surface for guiding the liquid to the outside. One or more grooves 91 can be provided on the side surface of the pushing member 9. As described above, the pushing member 9 penetrates through the first communication hole 72 and the space 73 of the base member 7. At this time, the pushing member 9 is secured so that the groove 91 is secured. 9 is brought into contact with the inner peripheral side of the base member 7.

  Therefore, the pushing member 9 comes into contact with the rod-shaped shaft core portion 9a that comes into contact with the first series of through holes 72 and the inner peripheral surface of the space portion 73, as shown in FIGS. In addition, a shape having a large-diameter portion 9b having a diameter larger than that of the shaft core can be employed.

  When the overcap 8 is pushed into the eyedropper A in order to release the sealed state of the eyedropper A (see FIG. 2), the pushing member 9 is moved together with the overcap 8 into the eyedropper A. (Push position). At this time, the pushing member 9 is pressed against the inner plug 61 provided at the tip of the liquid injection tube 6 of the eyedropper A, and slides on the inner peripheral surface of the liquid inlet 61 a of the inner plug 61. I do. At this time, if the groove 91 communicates with the space inside the eye drop container containing the drug solution, the sealed state can be released. Then, the liquid medicine in the eyedropper container A can flow out of the groove 91.

Here, as the shape of the pushing member 9, a shape in which one end of the eyedropper container A is formed in a needle shape is illustrated. With such a configuration, even in the case of a completely sealed container in which the filling port 61a is not provided in the inner plug portion 61 provided at the tip of the liquid injection tube portion 6, the inner plug portion 61 is pierced. And the sealed state of the ophthalmic container A can be easily released.
Further, the diameter of the needle-like portion is preferably smaller, and in practice, it is in the range of about φ1 to 3 mm.
At this time, if a conical concave part with a bottom having a larger inner diameter toward the distal end side is formed in the liquid injection cylinder portion 6, the shape and size of the liquid injection hole generated by the perforation can be made uniform. .

  As yet another form, in the case of a container in which the hermetically sealed state is maintained by plugging the liquid injection port 61a, a form in which the pushing member 9 can remove the plug is applied. Specifically, it is possible to form the pushing member 9 such that one end of the pushing member 9 on the eyedropper container A side has a flat shape. Then, when the pushing member 9 is pushed in, the plug is pushed into the eye dropping container A and can be removed from the liquid injection tube part 6, so that the sealed state of the eyedropping container A can be easily released.

  As a constituent material of the pushing member 9, a material suitable for releasing the sealed state of the ophthalmic container A, for example, a thermoplastic resin which is stronger than the ophthalmic container A can be applied.

(First close member)
The first close member 11 is fixed to the distal end portion 77 of the base member 7 in a state of being in close contact with the pushing member 9 from the outside. However, the first close member 11 is merely fixed to the pushing member 9 and is not fixed. Therefore, the first close member 11 and the pushing member 9 are configured to be easily separated from each other. (See FIG. 5).

  At this time, if a second space 13 is provided, which is a space surrounded by the first close member 11, the pushing member 9, and the base member 7, the second space 13 is formed before the chemical solution flows out. It can be temporarily stored in the two space portion 13.

Here, the protrusions 79 for suppressing the deformation of the first close member 11 toward the base member 7 are distributed at the tip of the base member 7, and the protrusion 79 In the case where the first close member 11 is disposed close to the first close member 11, a space between the protrusions 79 and the space surrounded by the first close member 11 and the pushing member 7 is a large space portion. On the other hand, since the protruding portion 79 is disposed close to the first close member 11, a space surrounded by the protruding portion 79, the first close member 11, and the pushing member is a small space portion. ing.
Therefore, a space in which the chemical solution can be temporarily stored can be secured in the large space portion and the small space portion.

  Further, in order to improve the cutting of the chemical solution and to make the amount of one drop constant (within a range of 25 to 50 μL per one drop), the outer side of the portion where the first close contact portion 11 and the pushing member 9 are in close contact with each other. In the above, it is preferable to provide the annular convex portion 11a.

  In order to fix the first close member 11 to the distal end portion 77 of the base member 7 and to be easily separated from the pushing member 9, the first close member 11 is made of rubber or the like. It is preferable to be formed of the elastic material.

  As described above, the cap B is composed of the base member 7, the overcap 8, the pushing member 9, and the first close member 11, and the cap B has such a configuration to accommodate the liquid. The sealed eye drop container A can be used.

  That is, when using the eye dropping device X including the eye dropping container A and the cap B having the above-described configuration, the overcap 8 is pressed toward the eyedropping container A, and the pressing member 9 is pushed from the non-pushed position to the pushed position. The sealed state of the eyedropper container A is released by changing the posture to. At this time, the sealed state of the eye drop container A is released by the communication of the groove portion 91 with the space inside the eye drop container containing the drug solution. As a result, the drug solution contained in the eye drop container A can flow out of the eye drop container A. Therefore, the sealed state of the eyedropper container A can be easily released by a simple operation of pushing the pushing member 9.

  Then, in a state where the overcap 8 is detached from the base member 7, the body liquid 2 of the eye drop container A is pressed by a finger or the like, so that the drug solution flows out of the eye drop container A. The drug solution flowing out of the eyedropper container A is guided to the outside by the groove 91 provided in the pushing member 9. At this time, since the liquid medicine does not flow out through a path other than the groove 91, liquid leakage from the eyedropper container A can be prevented.

  Further, the chemical solution guided by the groove portion 91 is temporarily stored in the second space portion 13, and when the chemical solution fills the second space portion 13, the pressure of the chemical solution becomes a positive pressure and is in close contact. The first close member 11 and the pushing member 9 are easily separated from each other, and the chemical solution flows out (FIG. 5).

  Further, when the pressing of the body 2 of the eyedropper container A is stopped after the desired chemical solution is discharged to the outside, the chemical solution filled in the second space 13 returns to the normal pressure, so that the first close member 11 And the pushing member 9 returns to a close state. At this time, the outflow of the drug solution to the outside can be stopped, and the inflow of the external air into the eye dropping container A can be prevented. Therefore, it is possible to prevent the incorporation of microorganisms and the like contained in the external air into the ophthalmic container after the container is opened, and it is possible to prevent contamination in the container after the container is opened.

[Another Example 1]
In the embodiment described above, it is possible to provide a sealing member 100 that is held by the pushing member 9 and the base member 7 in a state where the pushing member 9 is pushed (see FIG. 6).

The inner plug 61 provided with the liquid injection port 61a and the liquid injection cylinder 6 are usually tightly attached to each other, so that external air flows between the inner plug 61 and the liquid injection cylinder 6. It rarely invades from.
On the other hand, when the cap B is attached to the eyedropper A, the base member 7 and the inner plug 61 come into contact with each other. At this time, the base member 7 and the inner plug 61 are not so closely adhered as the inner plug 61 and the liquid injection tube 6 are attached to each other. There is a risk that external air will flow in between the two.

  At this time, the sealing member 100 held by the pushing member 9 and the base member 7 is provided in a state where the pushing member 9 is pushed, so that the base member 7 and the inner plug portion 61 are formed. It is possible to reliably shut off the external air that is going to flow in from between. Therefore, contamination of the liquid medicine in the eyedropper container A by air can be effectively prevented.

  Further, the sealing member 100 is held by the pushing member 9 and the base member 7 in a state where the pushing member 9 is pushed, so that when the pushing member 9 is in the pushing posture, the pushing member 9 is pushed. As a result, the sealing member 100 is pressed. Therefore, the pressing of the sealing member 100 can be avoided until the time of use, so that the shape of the sealing member 100 and the external air blocking function can be favorably stored without deterioration until the time of use.

  It is preferable that the sealing member 100 is made of, for example, a rubber packing or a foamed sheet, since the external air can be reliably shut off.

[Another Example 2]
In the configuration described in the first embodiment, the base member 7 includes a first base member 7a and a second base member 7b, and in a state before the pushing member 9 is pushed, the sealing member The outer periphery of 100 can be fixed by the first base member 7a and the second base member 7b (see FIG. 7).

  By fixing the outer periphery of the sealing member 100 with the first base member 7a and the second base member 7b in this manner, the posture of the sealing member 100 can be stabilized. Therefore, when the pushing member 9 is in the pushing posture, the sealing member 100 can be prevented from being held in the abnormal posture by the first base member 7a and the second base member 7b, and external air can be prevented. The shut-off function can be reliably exhibited.

  Note that the present invention is not limited to the above embodiment, and the configuration of each part can be appropriately changed as long as the same operation and effect can be obtained.

Schematic view showing a state where the cap of the present invention and the container body are screwed and integrated. Schematic diagram when the posture is changed from the non-pushing posture to the pushing posture. (A) Non-pushing posture (removing the cutout from the overcap) (b) Pushing posture (cap body abuts base member) Schematic diagram of the projecting portions dispersedly arranged at the tip portion of the base member Schematic diagram of push member Schematic drawing of the main part when a drug solution is dropped during eye drops Principal schematic diagram when a sealing member is provided between the pushing member and the base member The main part schematic diagram when the base member is constituted by the first base member and the second base member, and the outer periphery of the sealing member is fixed by the first base member and the second base member. Cross-sectional schematic diagram of conventional eye drops

Explanation of reference numerals

Reference Signs List 7 base member 77 distal end portion 8 overcap 9 pushing member 91 groove portion 10 container body 11 first close contact member A eye drop container B cap X eye drop

Claims (6)

A base member attachable to a container body capable of containing a liquid,
An overcap attachable to the base member,
The container is inserted and held in the base member so as to be slidable with respect to the base member, has a groove on its side surface for guiding the liquid to the outside, and the container is closed by the overcap so as to release the sealed state of the container body. A pushing member that can be pushed into the side of the main body,
A contamination prevention cap comprising: a first close member provided at a distal end portion of the base member so as to be in close contact with the pushing member from outside and allow the liquid to flow out.   The contamination prevention cap according to claim 1, wherein the pushing member has a needle-shaped one end on the container body side.   Protrusions for suppressing the deformation of the first close member toward the base member side are dispersedly arranged at the tip end of the base member, and the protrusions are disposed close to the first close member. The contamination prevention cap according to claim 1 or 2, wherein:   The contamination prevention cap according to any one of claims 1 to 3, further comprising a sealing member held by the pushing member and the base member in a state where the pushing member is pushed.   The base member is configured by a first base member and a second base member, and in a state before the pushing member is pressed, the outer periphery of the sealing member is formed by the first base member and the second base member. 5. The pollution prevention cap according to claim 4, wherein the cap is fixed by:   The overcap is formed of a cap body and a cutout that is cut off from the cap body. After the cutout is removed, when the cap body is pushed in, the cap body contacts the base member. The pollution prevention cap according to claim 1, wherein the cap is configured to be accessible.

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