JPH0542831Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the mouth structure of a medical container for storing liquids such as medicinal solutions and blood.

[Problems to be solved by conventional techniques and inventions] As the opening of conventional medical containers for storing liquids such as blood and medicinal solutions, a rubber stopper made of synthetic rubber is attached directly to the opening main body, or a rubber stopper is used. When the material is natural rubber, a rubber stopper is attached to the mouth via a liquid cap to prevent natural rubber eluates from getting mixed into the drug solution.

Furthermore, a flange is formed on the liquid cap to prevent the rubber stopper from falling into the liquid passage of the mouth main body.
A fitting groove is formed on the top surface of the rubber stopper to prevent the rubber stopper from being pulled out even if it is fixed in the groove of the mouth body or punctured with a bottle needle, and a stopper body with an annular protrusion formed in the fitting groove is formed on the top surface of the rubber stopper. They were mated.

Currently, the opening of medical containers must be such that (a) leachables do not enter the drug solution through rubber stoppers, etc.;

(b) Sterility is maintained (particularly on the surface of the rubber stopper used for puncturing the needle).

(c) The rubber stopper is firmly fixed to the main body of the mouth; in other words, when the rubber stopper is punctured with a needle to infuse the drug solution, the drug solution does not leak from the point where the needle is punctured, and the rubber stopper However, the above-mentioned mouth did not necessarily satisfy all of these conditions.
Therefore, in order to solve the above problems, the inventor of the present invention has conducted extensive studies, and as a result, has come up with an opening for a medical container having the following configuration.

[Means for Solving the Problems] The present invention is a spout that is attached to the liquid inlet/outlet of a medical container that stores liquids such as medicinal solutions and blood, and is formed of a thick wall portion 9 and an enlarged large diameter portion 8. A liquid contact cap 3 having a body portion 13 and a thin bottom portion 14 that come into contact with the enlarged large diameter portion 8, and a fitting groove 10 of the mouth portion main body 2 A rubber stopper 4 having a fitting groove 16 corresponding to the fitting protrusion 15 and the body 13 of the liquid cap 3; a fitting protrusion 17 corresponding to the fitting groove 11 of the enlarged large diameter portion 8; Rubber stopper holder 5 formed with a fitting protrusion 19 corresponding to the fitting groove 18 of the stopper cap 6
and a rubber stopper cap 6 which has a body part 20 formed with a fitting groove 18 on its inner circumferential surface, a grip member 21 formed thereon, and a rib 23 formed on its inner wall surface, and the enlarged large diameter part 8 has a connecting part 20. A medical container comprising a fixing groove 7 of a liquid cap 3, a fitting groove 10 corresponding to a fitting protrusion 15 of a rubber stopper 4, and a fitting groove 11 corresponding to a fitting protrusion 17 of a rubber stopper holder 6. mouth part 1
(hereinafter abbreviated as "mouth part 1").

[Function] The rubber stopper 4 is doubly compressed and fixed in the direction of the center of the mouth body 2 by the fitting protrusion 17 of the rubber stopper holder 5 and the body 13 of the liquid cap 3, so that the bottle needle cannot be inserted. There is no risk that the rubber stopper will come off even if you try to puncture it and pull it out.

[Example] Fig. 1 is an exploded sectional view showing the mouth part 1 of the present invention, Fig. 2 is a sectional view of the mouth part 1, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is an exploded sectional view of the mouth part 1 of the present invention. A-O of rubber plug cap 6
-A sectional view.

The present invention includes a mouth body 2 made of polyvinyl chloride or the like, a liquid cap 3 made of polypropylene or polyvinyl chloride, a rubber stopper 4 made of natural rubber, a rubber stopper holder 5 made of polyvinyl chloride, etc. It consists of a rubber stopper cap 6 made of.

The mouth main body 2 is composed of a thick wall part 9 and an enlarged large diameter part 8, and the enlarged large diameter part 8 has a fixing groove 7 for the liquid cap 3, a fitting groove 10 for the rubber stopper 4, and a rubber stopper holder. 5
A fitting groove 11 is formed.

The liquid contact cap 3 has a cylindrical body portion 13 and a thin bottom portion 14 that are integrally formed.

The rubber stopper 4 has a fitting protrusion 15 corresponding to the fitting groove 10 of the enlarged large diameter portion 8 and a body 1 of the liquid cap 3.
A fitting groove 16 corresponding to No. 3 is formed.

The rubber stopper holder 5 is formed with a fitting protrusion 17 corresponding to the fitting groove 11 of the enlarged large diameter portion 8 and a fitting protrusion 19 corresponding to the fitting groove 18 of the rubber stopper cap 6.

The rubber stopper cap 6 is composed of a body portion 20 having a fitting groove 18 formed on its inner peripheral surface and a gripping member 21, and a rib 23 is formed on its inner wall surface.

Next, a method of assembling the mouth portion 1 will be explained.

Connect the body 22 of the rubber stopper 4 to the body 1 of the liquid cap 3.
3 and assemble the rubber stopper 4 into the liquid cap 3. Then, insert the rubber stopper 4 into the fixing groove 7 formed in the enlarged large diameter portion 8 of the mouth main body 2 at the bottom 14 of the liquid cap 3.
Fix it so that they are in contact with each other.

The outer diameter D1 of the liquid cap 3 is fixed to the diameter D of the groove 7.
By forming it slightly larger than 2, it can be tightly fixed to the fixing groove 7.

At the same time, the fitting protrusion 15 of the rubber stopper 4 is fitted into the fitting groove 10 of the enlarged large diameter portion 8.

Subsequently, the rubber stopper holder 5 is placed over the rubber stopper 4 fixed to the enlarged large diameter portion 8.

That is, the fitting protrusion 17 of the rubber stopper holder 5 is brought into contact with the fitting groove 11 of the enlarged large diameter part 8, and the rubber stopper holder 5 is
An ultrasonic oscillator (not shown) is brought into contact with the top surface of the
By oscillating ultrasonic waves and welding the fitting protrusion 17 and the fitting groove 11, the rubber plug 4 is tightly fitted into the enlarged large diameter portion 8.

Finally, the rubber plug cap 6 is placed on the upper circumferential surface of the rubber plug holder 5 through the fitting groove 18, and the rubber plug
Avoid contact with outside air.

The rubber stopper cap 6 has ribs 2 formed on the inner wall surface.
3 is brought into contact with the rubber stopper holder 5, a gap is created between the rubber stopper cap 6 and the rubber stopper holder 5, and the internal space 24 of the rubber stopper 4 communicates with the outside air through this gap.

The spout 1 assembled as described above is attached to the main body of a medical container formed into a bag shape by overlapping two synthetic resin sheets (or to the main body of a bottle-shaped medical container with the spout main body 2 integrally molded). It is attached.

The medical container is subjected to high-pressure steam sterilization and then used for infusion therapy. Internal space 2 of rubber stopper 4
4 is formed to communicate with the outside air, so even if the air in the space 24 expands during sterilization, the expanded air will be discharged to the outside through these gaps, so the rubber stopper cap 6 will prevent the expanded air from entering the space 24. There is no need to worry about it coming off due to pressure.

When using, hold the rubber stopper cap 6 by the handle 21.
Remove the rubber stopper holder 5 from the rubber stopper holder 5 by holding the handle to expose the top surface of the rubber stopper 4.

A bottle needle is inserted into the rubber stopper 4 and penetrated through the bottom 14 of the liquid cap 3, so that the liquid sealed in the medical container is discharged through the bottle needle.

Since the rubber stopper 4 is firmly fitted with the liquid contact cap 3 and the rubber stopper holder 5, even if the needle is once punctured and then removed, there is almost no leakage of liquid from the puncture site.

Furthermore, in the present invention, as shown in FIG.
can be easily removed from the rubber stopper holder 5. That is, the gripping member 21a can be easily removed by pinching and pulling up the gripping member 21a between the thumb and index finger.

[Effects] As explained above, in the present invention, the rubber stopper 4 exerts a double contraction force acting from the fitting protrusion 17 of the liquid cap 3 and the rubber stopper holder 6 toward the center of the mouth body. receive. As a result, it is firmly fixed to the enlarged large diameter portion 8 of the mouth main body 2, so that even once the needle is punctured, it will not easily come off, and there is no fear of liquid leaking from the puncture site.

The upper surface of the rubber stopper 4 is covered with a rubber stopper cap 6, and the space 24 formed between the rubber stopper cap 6 and the rubber stopper 4 is formed so as to communicate with the outside air, so that even during high pressure steam processing, The rubber stopper cap 6 does not come off easily and can maintain sterility at all times.

This is an excellent idea that has the following effects.

[Brief explanation of the drawing]

Figure 1 is an exploded sectional view of the mouth, Figure 2 is a sectional view of the mouth, Figure 3 is a plan view of Figure 2, and Figure 4 is the A-O-A cross-section of the rubber stopper cap in Figure 3. FIG. 5 shows a plan view showing another embodiment of the rubber stopper cap. In the figure, 1 is the mouth part, 2 is the mouth part body, 3 is the liquid cap, 4 is the rubber stopper, 5 is the rubber stopper holder, 6 is the rubber stopper cap, 7 is the fixing groove, 8 is the enlarged large diameter part, 9 10, 11, 16, 18 are fitting grooves, 13,
20, 22 are body parts, 14 are thin parts, 15, 17,
19 is a fitting protrusion, 21 is a gripping member, and 23 is a rib.

Claims (1)

[Scope of Claim for Utility Model Registration] A spout body 2 that is attached to the liquid inlet/outlet of a medical container that stores liquids such as medicinal solutions and blood, and that is formed from a thick wall portion 9 and an enlarged large diameter portion 8. , a liquid cap 3 having a body 13 that comes into contact with the enlarged large diameter portion 8 and a thin bottom 14 , and a fitting protrusion 15 corresponding to the fitting groove 10 of the mouth main body 2 . and a rubber stopper 4 having a fitting groove 16 corresponding to the body 13 of the liquid cap 3; a fitting protrusion 17 corresponding to the fitting groove 11 of the enlarged large diameter portion 8; and fitting of the rubber stopper cap 6. A rubber stopper holder 5 with a fitting protrusion 19 corresponding to the fitting groove 18
and a rubber stopper cap 6 which has a body part 20 formed with a fitting groove 18 on its inner circumferential surface, a grip member 21 formed thereon, and a rib 23 formed on its inner wall surface, and the enlarged large diameter part 8 has a connecting part 20. A fixing groove 7 of the liquid cap 3, a fitting groove 10 corresponding to the fitting protrusion 15 of the rubber stopper 4, and a fitting groove 11 corresponding to the fitting protrusion 17 of the rubber stopper holder 6 are formed. Mouth part 1 of a medical container.