JPH09164181A - Cock body for transfusion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of coring during the puncturing with a needle by setting an interval between a rubber cock and a thin film above a specific value, in a cock body made of a resin which houses a rubber cock and covers the side being in contact with a liquid medicine of the rubber cock with a thin film made of a resin. SOLUTION: This cock body applied on a transfusion container comprises a frame body 1, a support body 2 with a thin film 21 and a rubber cock 3 housed between the frame body 1 and the support body 2. The frame body 1 is a cap-shaped member made of a resin and has a peelable top surface 11 and a skirt part 12. The top surface 11 is provided with a pull ring 13 to peel it. On the other hand, the support body 2 is a circular member and is inserted and mounted into the undersurface of the skirt part 12 of the frame body 1 to grasp the rubber cock 3. The support body 2 is formed by providing the thin film 21 inside a circular support part. But, the interval (d) between the thin film 21 and the rubber cock 3 is set >=3mm to restrict the generation of possible coring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic stopper containing a rubber stopper, which is applied to a plastic infusion container, and particularly for infusion which does not substantially cause coring when a hollow needle is pierced. Regarding plugs.

[0002]

2. Description of the Related Art Conventionally, as a stopper for an infusion container, a rubber stopper 30 is provided in a plastic frame 10 as shown in FIG.
A so-called plastic plug body, in which the surface of the rubber plug 30 that contacts the chemical solution is covered with a thin plastic film 20, is commonly used. Since the thin film portion 20 of this plastic stopper is a portion through which the hollow needle is pierced during mixed injection or infusion, it is usually 0. 0 in order to reduce piercing resistance and prevent clogging of the needle hole due to plastic chips. It is formed to be thin with a thickness of about 5 mm. And this plastic plug is
It has advantages that the drug solution contained in the infusion container has a good sealing property, and that fine particles are not mixed due to contact between the rubber stopper and the drug solution.

[0003]

However, this conventional plastic plug has a problem that when the hollow needle is pierced, the rubber plug may be cut off by the hollow needle to cause coring. The present invention has been made in view of the above circumstances, has a good sealing property of a chemical liquid, does not contain fine particles due to contact between a rubber stopper and a chemical liquid, and substantially corals when pierced by a hollow needle. It is an object of the present invention to provide a stopper for transfusion that does not have such a problem.

[0004]

In order to solve the above-mentioned problems, the present invention has been earnestly studied, and as a result, the frequency of gorering increases especially when the hollow needle is pierced obliquely.
In the conventional infusion stopper, since the distance between the thin film portion and the rubber stopper is small (0 to 1 mm), it is speculated that the thin film portion may serve as a cutting board and the rubber stopper may be easily cut off. The present invention has been conceived. That is, the present invention
In a plastic stopper body in which a rubber stopper is housed in a plastic frame body and the surface of the rubber stopper that contacts the chemical liquid is covered with a thin plastic film, the distance between the rubber stopper and the coating is 3 mm or more. It is a plug for infusion which is characterized in that Here, the distance between the rubber plug and the thin film is preferably 3 to 10 mm in consideration of the stroke of the hollow needle.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 is a vertical sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view showing the plastic support of FIG. 1, FIG. 3 is a vertical sectional view showing another embodiment, and FIG.
3 is a cross-sectional view showing the rubber plug of FIG. The infusion plug of the present invention is
As shown in FIGS. 1 and 3, it is composed of a support 2 having a frame 1 and a thin film 21 and a rubber stopper 3 housed between the frame 1 and the support 2. The distance d of 21 is 3 mm or more. The infusion plug is attached to (the mouth of) the infusion container 4 by a method such as heat welding.

The frame 1 is a cap-shaped member made of plastic such as polyethylene or polypropylene,
As shown in FIGS. 1 and 3, it has a peelable top surface 11 and a skirt portion 12. Usually, the top surface 11 is provided with a pull ring 13 for peeling it off.

On the other hand, the support body 2 is an annular member made of the same plastic material as the frame body 1, and as shown in FIG. 1 and FIG. A rubber stopper 3 housed in the body 1 is held. The support body 2 is composed of an annular support portion 22 for supporting the rubber stopper 3 and a thin film 21 provided inside the support portion 22, and the thin film 21 makes contact between the rubber stopper 3 and the drug solution contained in the infusion container 4. Is prevented. When the rubber stopper 3 has a leg 31 as shown in FIG. 4, the support 2 has a shape in which a thin film 21 is provided on the upper end as shown in FIG. 3, but as shown in FIG. In the case of the rubber plug 3 having no leg, the support 2 has a shape in which the thin film 21 as shown in FIG. 2 is provided in the middle of the annular support 22. Here, the distance d between the rubber plug 3 and the thin film 21 is 3 mm or more,
It is preferably 3 to 10 mm in consideration of the stroke of a hollow needle (not shown) pierced by the rubber plug 3.

[Test Example] A plug for infusion containing a rubber stopper 3 made of butyl rubber (thickness 5 mm) as shown in FIG. 1 (inner diameter of support portion 22 of support 2 is 13 mm, thickness of thin film 21 is 0.
5mm) for each test item 60 pieces,
When the interval between the rubber plug 3 and the thin film 21 was changed, and the insertion position and the insertion angle were changed, the piercing test was conducted, and the results shown in Table 1 were obtained. It was found that when the thickness of the thin film 21 was 3 mm or more, coring did not occur regardless of the insertion position or the insertion angle.

[0009]

[Table 1]

[0010]

As is apparent from the above description, the infusion solution plug of the present invention does not cause coring regardless of the insertion position or the insertion angle.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

2 is a sectional view showing the plastic support of FIG. 1. FIG.

FIG. 3 is a longitudinal sectional view showing another embodiment.

FIG. 4 is a cross-sectional view showing the rubber plug of FIG.

FIG. 5 is a vertical cross-sectional view showing a conventional infusion plug body.

[Explanation of symbols]

 1 Frame 2 Support 21 Thin Film 3 Rubber Plug 4 Infusion Container

Claims (2)

[Claims] 1. A plastic plug body comprising a plastic frame and a rubber plug housed in the frame, and the surface of the rubber plug on the side in contact with the chemical liquid is covered with a plastic thin film. Is 3 mm or more apart, and is a plug for infusion. 2. The infusion solution plug according to claim 1, wherein the distance between the rubber plug and the thin film is 3 to 10 mm.