JPH0253311B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid container that can control the amount of liquid discharged at a constant level and with less than one drop of liquid (hereinafter simply referred to as a minute amount) in one operation.

Conventionally, an eye drop container is used to administer eye drops into the eye, but this eye drop container has an opening with a small-diameter drug solution outlet at one end, and an opening at the other end that compresses the drug solution inside. Either a glass container with a pressing part made of rubber or the like, or a flexible and elastic plastic container with an opening as described above at one end was used. These eye drop containers are filled with a medicinal solution, placed close to the eye facing upward with the opening facing downward, and the pressure of the medicinal solution is increased by pressing the pressure part or the container itself, thereby allowing the medicinal solution to drip from the opening. are doing.

If too much pressure is applied to the pressure part or the container itself during use, a corresponding number of drops of the drug solution will be expelled in succession, resulting in the instillation of more than the desired amount of drug solution into the eye.
In the first place, administering more than a certain amount of eye drops at one time does not improve the therapeutic effect; instead, repeating a fixed amount of eye drops at intervals increases the therapeutic effect. Instilling an unnecessary amount of eye drops at once is not only uneconomical, but also causes excess drug solution to be poured into the oral cavity through the nasolacrimal duct, which can induce systemic side effects if the solution is a strong one. be. Therefore, in order to treat only the eye disease without causing these side effects, the amount of liquid injected into the eye at one time must be smaller than conventionally. However, with conventional eye drop containers, it has been structurally impossible to control the small amount of drug solution discharged.

Not only the above-mentioned eye drop containers, but also containers used for perfumes, oral fresheners, etc. had similar drawbacks.

The present invention has been made to solve the above-mentioned problems, and anyone can reliably and easily control a very small and constant amount of discharged liquid in one operation.
The object is to provide a container that can discharge a desired amount of liquid.

1 to 3 showing a first embodiment of the present invention will be described below. 1 is a cylindrical container body made of flexible and elastic synthetic resin such as polyester, polypropylene, polyethylene, etc.; 2 is a cylindrical opening protruding outward from the center of the upper part of the container body 1; 3 is one end. A very small amount (approximately 5
A reservoir 5 for liquid 4 having a volume corresponding to ~30ml)
A liquid 4 with a small diameter that communicates with the other end and opens at the other end.
It is a discharge pipe having an outflow passage 6, and has a reservoir 5 inside the container main body 1, and the other end is closely passed through an inner lid 7 that is closely fitted into the opening 2, and is projected outside the container main body. It is installed on 1. The reservoir section 5 has a cross section with both ends open, and the outer circumferential side surface of a circular short cylindrical member 8 is fixed to the end of the discharge pipe 3, and communicates with the outflow path 6. Reference numeral 9 denotes a liquid container in which a lid 10 is externally fitted and screwed onto an opening 2 of a container body 1 to which a discharge pipe 3 is attached.

When the liquid container 9 containing the liquid 4 with the space 11 remaining is turned upside down with the opening 2 facing down as shown in FIG. 3, the space 11 is on the bottom 12 side and the liquid 4 is on the opening 2 side. A small and constant portion of the liquid 4' moves in each direction and remains in the reservoir 5 due to its surface tension and the affinity between the liquid 4 and the material of the reservoir 5. In this state, when the container body 1 is pressed from the outside in the direction of the arrow a, the air pressure in the space 11 increases, and the liquid 4' remaining in the reservoir 5 is discharged to the outside through the outflow path 6. .

In this case, even if the container body 1 is pressed from the outside, only the liquid 4' remaining in the reservoir 8 will be discharged to the outside, so by appropriately setting the volume and shape of the reservoir 5, any liquid can be amount can be discharged.

When the liquid container 9 with the above function is filled with a medicinal solution and used as an eye drop container, only a small amount of the medicinal solution that remains in the reservoir 5 is discharged in one operation, so even if a strong medicinal solution is used, it will not be necessary. Can be used without any restrictions. It can also be effectively used as a container for perfumes, oral fresheners, etc.

In FIG. 4 showing the second embodiment of the present invention, 1
₁ is a cylindrical container body made of the same material as in the first embodiment; 3 ₁ is a short cylindrical member ₈ having a rectangular cross section with both ends opened at one end; A discharge pipe having an outlet passage ₆ for liquid 4 having a small diameter and communicating with a reservoir ₅₁ for liquid 4 having a volume corresponding to a small amount and having an open end at the other end.
is placed inside the container body ₁₁ , and the other end is attached to the container body ₁₁ by closely penetrating the inner lid ₇₁ fixed to the opening 2 and projecting to the outside.
9 ₁ is a liquid container having a lid 10 externally screwed onto the opening 2 of the container body 1 ₁ , and 11 is a space.

The functions and effects of the liquid container ₉₁ are the same as in the first embodiment.

5 to 9 showing other embodiments of the reservoir formed at one end of the discharge pipe will be described below. Fifth
The figure shows the end of the discharge pipe ₃₂ having the discharge passage 6
A reservoir portion 5 2 having a volume corresponding to a minute amount is fixed to the inner circumferential side of a short cylindrical member 8 with both ends open as in the embodiment, and the discharge passage 6 is opened inside the member ₈ . . Figure 6 shows the end of the discharge pipe ₃₂
Short cylindrical member 8 ₁ with openings at both ends similar to the embodiment
A reservoir portion ₅₃ having a volume corresponding to a minute amount is formed by fixing to the inner peripheral side surface of the member 81 and opening the discharge passage 6 into the inside of the member ₈₁ . The end of the discharge pipe 3 ₂ is attached to the lower outer circumferential side surface of a bowl-shaped member 8 ₂ with an annular half-cut surface opened in FIG. A bowl-shaped member 8 ₂ is fixed to the bottom surface of the outer periphery with the opening facing upward, and in _FIG . These are reservoir portions 5 ₄ , 5 ₅ , and 5 ₆ having volumes corresponding to minute amounts formed by opening into the interiors of the reservoirs 8 ₂ . In addition, in Fig. 9, the discharge pipe 3 ₂
A notch 13 having a triangular cross section is made at the end of the pipe to open the outflow passage 6. The functions of the reservoirs 5 ₂ to 5 ₆ are similar to the reservoirs 5 and 5 ₁ of the first and second embodiments.

In the first and second embodiments described above, the container bodies 1, ₁₁ are made of a flexible and elastic synthetic resin such as polyester, and the container bodies 1, ₁₁ are pressed directly from the outside. Another method for increasing the air pressure in the space 11 is, for example, by attaching a pressing part of an appropriate shape made of rubber or a flexible and elastic synthetic resin to the container body 1, ₁₁ in communication with the pressing part, and pressing the pressing part. If the container bodies 1, ₁₁ can have the same effect when pressed directly from the outside, they may be made of a hard material such as glass or synthetic resin such as polycarbonate. Also, the container body 1, 1
The shape of ₁ allows the reservoirs 5, ₅₁ to be separated from the stored liquid 4 and exposed to the space 11, and the pressure in the space 11 can be reduced by pressing the container bodies 1, ₁₁ from the outside. The shape shown in the drawings is not restrictive as long as it can be raised. In addition, the reservoir part 5 or ₅₁ has a short cylindrical member 8 or a rectangular cylindrical member ₈₁ with both ends open at the tip of the discharge pipe 3 or ₃₁ , but as shown in FIGS. As shown, liquid 4
The shape is not limited to the above-mentioned shape as long as the desired amount of .

Since the present invention has the above configuration, it has the following effects.

(1) A container for supplying expensive liquids or liquids with strong effects because anyone can reliably and easily control a small amount of liquid discharged, equivalent to the amount of one drop or less, in a single operation. It is most suitable as

(2) A constant amount of liquid to be discharged in a single operation can be easily set, making it extremely versatile as a container for supplying liquid.

(3) Since the structure is simple, it is easy to manufacture and can be provided at low cost.

[Brief explanation of the drawing]

The drawings relate to each embodiment of the container according to the present invention, and FIGS. 1 to 3 show the first embodiment.
The figure is a plan view, Figure 2 is a sectional view taken along line A-A, Figure 3 is a longitudinal sectional view for explaining how to use it, Figure 4 is a longitudinal sectional view of the second embodiment, and Figures 5 to 9 are In other embodiments of the reservoir portion of the discharge pipe, A is a perspective view and B is a longitudinal cross-sectional view. 1,1 ₁ ... Container body, 2... Opening, 3,3
₁ , 3 ₂ ... discharge pipe, 4 ... liquid, 5, 5 ₁ , 5 ₂ ,
5 ₃ , 5 ₄ , 5 ₅ ... Reservoir, 6 ... Outflow path, 8 ...
A short cylindrical member with a circular cross section with both ends open, 8 ₁ ...
...Short cylindrical member with a square cross section with both ends open 8 ₂
... Bowl-shaped member with an annular half-cut surface opened, 9,9 ₁ ...
...Liquid container, 11...Space part.

Claims (1)

[Scope of Claims] 1. A sealable container body made of a flexible and elastic synthetic resin, which stores a liquid in a space, and has a shape in which one end is completely opened in at least one direction; A discharge pipe having a small-diameter liquid outflow path, in which a reservoir with a volume equivalent to one drop or less of liquid is connected; the reservoir is located inside the container body, and the other end is connected to the discharge pipe. It is characterized in that the container is attached by closely penetrating the container body and having an opening protruding to the outside; the space is pressed from the outside and the liquid in the reservoir facing the space is discharged to the outside. A liquid container that discharges a certain amount of liquid. 2. A liquid container for discharging a constant amount of liquid according to claim 1, wherein the reservoir is a short cylindrical member having a circular or square cross section and opening at both ends. 3. A liquid container for discharging a constant amount of liquid according to claim 1, wherein the reservoir is a bowl-shaped member.