JP2002102311A - Mouth part plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mouth part plug adequate for a container which houses a ophthalmologic reflux liquid, cleaning liquid, etc., and is required to use a puncture needle of a large diameter for discharge treatment, etc. SOLUTION: This mouth part plug 10 is provided with a cavity part 13 capable tightly fitting the puncture needle of the large diameter used for the discharge of the ophthalmologic reflux liquid, cleaning liquid, etc., to an elastic body having hardness (JIS A) of 50 to 90. This cavity part 13 is sealed by a top surface 11 of the mouth part plug 10 and has an opening end 14 at its base surface 12. The section on the base surface 12 side is formed to a circular shape and segments a thin part 15 of a straight form extending parallel to the top surface 11 at approximately the same width as the maximum width Wmax in the largest diameter part 17 of the cavity part 13 in the deepest part on the top 11 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mouth stopper provided at the mouth of a drug solution container, and more particularly, to a mouth stopper suitable for a drug solution container containing an ophthalmic reflux or cleaning solution.

[0002]

2. Description of the Related Art An ophthalmic reflux or cleaning solution is generally contained in a glass vial or a transparent plastic soft bag, and its mouth is sealed with a stopper made of rubber or the like. It is marketed in a state where it has been done. In other words, commercially available ophthalmic reflux and irrigation solutions are very similar in appearance to infusion preparations for intravenous infusion. For this reason, in general, a precautionary note is given to a container for storing an ophthalmic reflux or washing solution to prevent accidental administration or injection into a vein or the like.

[0003] In recent years, however, drugs handled in hospitals and the like have become diversified in accordance with the medical conditions of patients and the like, and medical workers are currently extremely busy. Therefore, it is difficult to say that there is no possibility of accidentally overlooking a medicine container or a precautionary statement. In such a situation, it is not preferable from the viewpoint of preventing a medical accident from occurring that it is difficult to visually distinguish different kinds of drugs that are completely different in use and that cause serious negligence due to misuse.

Accordingly, an object of the present invention is to provide a method for discharging a liquid using a puncture needle having a large diameter, such as a reflux liquid or a cleaning liquid for ophthalmology.
An object of the present invention is to provide a mouth stopper suitable for a container containing a chemical solution for which a transfer operation needs to be performed.

[0005]

Means for Solving the Problems and Effects of the Invention The mouth plug of the present invention for solving the above problems has a hardness (JIS).
A) is a mouth plug made of an elastic body of 50 to 90, which is provided with a hollow portion into which the puncture needle can be fitted without any gap, and the hollow portion is closed by a top surface of the mouth plug. Has an open end on the bottom surface of the mouth stopper, the cross section on the bottom surface side is circular, and has the same width as the maximum width of the circular portion at the innermost part on the top surface side. It is characterized in that a linear thin portion extending parallel to the top surface is defined.

In general, when a usual infusion or drip is used, it is not necessary to make the discharge speed of the drug solution from the container so high, so that the diameter of the drug solution is usually 1.
An extremely thin puncture needle having a diameter of about 0 to 4.5 mm is used. On the other hand, since the ophthalmic reflux liquid and the cleaning liquid are used by discharging a large amount of the drug solution from the drug solution container at a time, the diameter of the solution is usually 6 to 8 for the process of discharging and transferring the drug solution.
An extremely thick puncture needle having a diameter of about mm is used.

Here, the maximum diameter of the circular portion of the hollow portion provided in the mouth stopper according to the present invention is substantially the same as that of a large puncture needle used for discharging a reflux liquid or a cleaning liquid for ophthalmology. The diameter is set to be slightly thin. Therefore, the puncture needle can be inserted into the hollow portion without any gap, and there is no risk of liquid leakage even when the puncture needle is inserted. On the other hand, when a small-diameter puncture needle is inserted into the mouth plug according to the present invention, the maximum diameter of the circular portion of the cavity becomes extremely larger than the diameter of the puncture needle, and the puncture is performed inside the mouth plug. Needle stability is significantly reduced. Moreover, although a crack is formed along the linear thin portion by piercing the puncture needle on the top surface of the mouth plug, if the diameter of the puncture needle is small, the width of the crack is smaller than the diameter of the puncture needle. Because of the remarkable increase, leakage of the drug solution occurs remarkably.

[0008] Therefore, a person who uses the container for a medicinal solution provided with the mouth stopper according to the present invention mistakes the medicine depending on the stability of the puncture needle and the presence or absence of remarkable liquid leakage from the mouth stopper. It is possible to easily determine whether or not a puncture needle having an appropriate thickness is used. As an embodiment of the mouth plug of the present invention, the innermost portion of the hollow portion is formed of a pair of inclined surfaces intersecting each other, and the thin portion is partitioned by an intersection line of the pair of inclined surfaces. No. That is, in such an embodiment, the innermost portion of the cavity has a so-called gable roof shape that is concave toward the top surface side of the mouth stopper, and has a linear shape along the ridgeline of the top of the gable roof. A thin portion is defined.
In the above embodiment, the inclined surface is not necessarily a strictly flat surface, but may be a gently curved surface.

The mouth stopper according to the present invention is used for discharging and transferring the reflux liquid or the washing liquid, for example, by attaching it to a chemical solution container containing a reflux liquid or a washing liquid for ophthalmic use or the like. Therefore, it is desired that the maximum diameter of the circular portion of the cavity be set so that a puncture needle suitable for such an application is inserted without any gap. Specifically, it is preferable that the maximum diameter of the circular portion of the cavity be set to 5 to 7 mm.

[0010] The mouth plug according to the present invention is provided with (i) a ridge surrounding the thin portion on its top surface, and / or
Alternatively, (ii) it is preferable that a concave portion is defined near the thin portion on the top surface. The puncture position may be determined by providing a ridge surrounding the thin portion as in (i) above, or by forming a recess near the thin portion as in (ii) above. Thus, the position of the thin wall portion can be easily confirmed.

[0011] The mouth plug of the present invention is provided with a cap having an outer frame made of plastic, metal, or the like attached to the periphery thereof, so that it can be inserted into the mouth of a drug solution container containing an ophthalmic reflux solution or a cleaning solution. Installed and used. The mouth plug according to the present invention is suitable for applications in which it is required to discharge a large amount of a drug solution in a short time using a large-diameter puncture needle, such as the above-mentioned reflux solution or cleaning solution.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a mouth plug according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing an embodiment of the mouth stopper according to the present invention, and FIG.
(a) is a cross-sectional view of the mouth plug 10 shown in FIG.
(b) is a sectional view taken along the line BB. FIG. 3 is a diagram of FIG.
FIG. 4 is a cross-sectional view of the mouth plug 10 taken along line CC shown in FIG. 4, and FIG. 4 is a partially enlarged view showing the hollow portion 13 in the cross section taken along line BB of FIG.

FIG. 5 is a plan view showing another embodiment of the mouth plug according to the present invention, and FIG. 6 (a) shows the mouth plug 3 shown in FIG.
0 is a sectional view taken along the line DD, and FIG. 2B is a sectional view taken along the line EE. FIG. 7 shows the F-portion of the mouth plug 30 shown in FIG.
It is arrow F sectional drawing. The mouth plugs 10 and 30 of the present invention are members used by being attached to the mouth of a medicine container containing a reflux solution or a cleaning solution for ophthalmology, and have an opening end 14 on the bottom surface 13 side of the mouth plug. Then, the cavities 13, 33 which are closed on the top surface 12 side and into which a large-diameter puncture needle (not shown) used for discharging an ophthalmic reflux liquid, a cleaning liquid, or the like can be inserted without gaps. And a member made of an elastic body having a hardness (JIS A) of 50 to 90.

The mouth plugs 10 and 30 are formed, for example, with an outer frame 80 provided therearound so as to have the shape of a normal cap, and the mouth of a drug solution container for storing a reflux solution or a cleaning solution for ophthalmology. Used to be attached to. As is clear from the views of the mouth plugs 10 and 30 viewed from the bottom surface 13 side thereof (FIGS. 3 and 7), the hollow portions 13 and 33 are formed on the bottom surface 13 side (open end 14).
In the vicinity and the maximum diameter portions 17, 37), a circular cross section is formed.

On the other hand, on the top surface 12 side of the mouth plugs 10 and 30, a longitudinal sectional view in a direction orthogonal to the linear thin portions 15 and 35 (FIGS. 2 (a) and 6 (a)). Clearly,
The hollow portions 13 and 33 are defined by a pair of inclined surfaces 16 and 36 that intersect each other. The cavities 13 and 33 have a structure that gradually narrows toward the top surface 12 side of the mouth plugs 10 and 30, that is, a so-called so-called constituted by a pair of inclined surfaces 16 as shown in FIG. 4, for example. It has a gable roof structure.

The deepest portions of the cavities 13 and 33 define thin portions 15 and 35 for closing the cavities at locations where a pair of inclined surfaces 16 and 36 intersect. In the embodiment shown in FIGS. 1 to 3, the width of the cavity 13 on the top surface 12 side is:
A longitudinal sectional view in a direction parallel to the linear thin portion 15 (FIG. 2)
(b)) As is clear, the maximum diameter portion 17 of the cavity 13
Is set to have the same width as. On the other hand, in the embodiment shown in FIGS. 5 to 7, the top surface 12 of the hollow portion 33 is clear as seen from a longitudinal sectional view (FIG. 6B) in a direction parallel to the linear thin portion 35. The width W on the side is slightly narrower than the width _Wmax at the maximum diameter portion 37 by the second inclined surface 39 (in this embodiment, the hollow portion 33 has a so-called ridge roof structure. ing). In this case, although the resistance at the time of piercing the puncture needle is slightly increased due to the narrow width of the thin portion 35, the liquid leaks from the top surface 11 side of the mouth plug 30 when the puncture needle is inserted. The possibility of occurrence can be more reliably prevented.

The top surfaces 11 of the mouth plugs 10 and 30 are provided with ridges 18 and 38 surrounding the thin portions 15 and 35, respectively. The ridges 18 and 38 indicate the puncturing position of the puncture needle and also have the effect of facilitating the correct formation of cracks caused by the insertion of the puncture needle along the thin portions 15 and 35. It also has the effect of preventing the cracks generated in the thin portions 15 and 35 from excessively progressing. Therefore, the ridges 18 and 38 are formed in the width direction of the thin portions 15 and 35 in the width direction.
The thin portions 15 and 35 are formed so as to have substantially the same width. On the other hand, in the direction perpendicular to the width direction of the thin portions 15, 35, the width is as narrow as possible from the viewpoint of clarifying the puncture position, depending on the degree of deformation of the mouth plug 10 when the puncture needle is inserted. Is preferred.

The top surface 11 of the mouth plugs 10 and 30 has a ridge 1
Instead of 8, 38 or together with the ridge 18, the recess 1
9 may be provided. That is, as shown in FIG. 2, the thin portion 15 may be set to a portion that is recessed below the other top surface 11. Thereby, the puncture position of the puncture needle can be clarified. Further, it is also possible to prevent the crack generated in the thin portion 15 from excessively progressing due to the difference in the thickness of the elastic body between the concave portion 19 and other portions.

The top surface 11 of the mouth plugs 10, 30 may be provided with a side injection portion 20 for penetrating a small-diameter puncture needle, for example, as shown in FIGS. By providing the side injection section 20, for example, when another medicine is mixed in the medicine container, such an operation can be performed without forming a crack in the thin-walled section. [Elastic body] The hardness of the elastic body used in the mouth plug of the present invention is 50 to JIS A hardness from the viewpoint of easily forming a crack along a thin portion on the top surface of the mouth plug.
Preferably, it is set in the range of 90.

The hardness of the elastic body is preferably 6 among the above ranges.
It is preferably from 0 to 80, and more preferably from 65 to 70. Examples of the material of the elastic body include various materials used as stoppers of conventional drug containers. Specifically, rubbers such as natural rubber and silicone rubber, and elastic members such as thermoplastic elastomers can be used. (Cavity portion) The maximum diameter of the cavity portion is, as described above, for example, is set so that a puncture needle used for transfer or distribution of an ophthalmic reflux solution or a washing solution is tightly fitted, and specifically,
The maximum diameter ( _Wmax ) in the circular portion of the cavity is 5 to 7 m
m, and preferably about 5.5 mm.

The length (L
_max ) is preferably formed at a ratio of 30 to 60% with respect to the thickness of the elastic body from the viewpoint of increasing the adhesion of the puncture device. The width of the thin portions 15 and 35 that close the cavity at the innermost portion of the hollow portions 13 and 33 is not particularly limited, and is not too thick to make it difficult for a puncture needle to penetrate, and the thin portion is easily formed. It may be set so that it is not too thin to be damaged. Specifically, the thickness is not limited to this, but the thickness may be set to be 0.05 to 3 mm, preferably about 0.1 to 1 mm.

The height of the ridges 18 and 38 is not particularly limited, but is preferably about 0.05 to 1 mm, and more preferably about 0.1 to 0.5 mm. . Also, the depth of the recess 19 is not particularly limited, but is preferably about 0.3 to 1 mm, and more preferably about 0.4 to 0.8 mm. [Manufacturing method of mouth plug] The manufacturing method of the mouth plug of the present invention is not particularly limited, and the mouth plug can be manufactured according to a usual method according to the kind of elastic body constituting the mouth plug. For example, when a thermoplastic elastomer is used as the elastic body, a mouth stopper can be formed by injection molding using a mold having a projection corresponding to the shape of the cavity.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a mouth stopper according to the present invention.

2A is a cross-sectional view of the mouth plug 10 shown in FIG. 1 taken along the line AA, and FIG. 2B is a cross-sectional view taken along the line BB.

3 is a cross-sectional view of the mouth plug 10 shown in FIG.

FIG. 4 is a partially enlarged view of a hollow portion 13;

FIG. 5 is a plan view showing another embodiment of the mouth stopper according to the present invention.

6 (a) is a cross-sectional view of the mouth plug 30 shown in FIG. 5 as seen in the direction of arrows DD, and FIG. 6 (b) is a cross-sectional view in the direction of arrows EE.

7 is a cross-sectional view of the mouth plug 30 shown in FIG.

[Explanation of symbols]

10 Mouth stopper, 11 Top, 12 Bottom, 13
Cavity part, 14 open end, 15 thin part, 16 inclined surface, 17 maximum diameter part, 18 ridge, 19 concave part 30 mouth plug, 33 cavity part, 35 thin part, 3
6 Inclined surface, 37 maximum diameter part, 38 ridge, 39
2nd slope

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA12 AB05 BA01 CA01 CC10 DA01 DB13 EC10 FA09 FC04 GA08 GB08 GB19 HB01 HC03 HD01 KB01 LA07 LD29

Claims (8)

[Claims] 1. A mouth stopper made of an elastic body having a hardness (JIS A) of 50 to 90, comprising a hollow portion into which the puncture needle can be inserted without any gap, wherein the hollow portion is a mouth. A portion that is closed off on the top surface of the plug, has an open end on the bottom surface of the mouth plug, has a circular cross section on the bottom surface side, and has the circular shape at the innermost portion on the top surface side. The mouth plug is characterized by defining a linear thin portion having a width substantially the same as the maximum width of the upper surface and extending parallel to the top surface. 2. The mouth stopper according to claim 1, wherein the innermost portion of the hollow portion comprises a pair of inclined surfaces intersecting each other, and the thin portion is defined by an intersection line of the pair of inclined surfaces. 3. The mouth stopper according to claim 1, which is used for a chemical solution container containing a reflux liquid or a cleaning liquid. 4. The maximum diameter of the circular portion of the hollow portion is 5
The mouth stopper according to any one of claims 1 to 3, which has a length of 7 mm. 5. The mouth plug according to claim 1, wherein a convex ridge surrounding the thin portion is provided on a top surface of the mouth plug. 6. The mouth plug according to claim 1, wherein a recess is defined near the thin portion on the top surface of the mouth plug. 7. The elastic body has a hardness (JIS A) of 60 to 60.
The mouth plug according to any one of claims 1 to 6, which is 80. 8. The circular portion of the hollow portion, the portion having the maximum diameter being formed from the bottom opening end of the mouth plug to 30 to 60% of the thickness of the mouth plug. 8. The mouth stopper according to any one of 7.