JPH085707Y2 - Infusion container made of plastic - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed plastic container for containing a liquid medicine such as a medicine.

[0002]

2. Description of the Related Art A sealed plastic container for containing a drug solution has conventionally been composed of a rubber stopper and a container. The rubber stopper is shaped to fit exactly into the drug solution outlet of the container, and the rubber stopper itself may be separated by an olefin resin film so as not to come into direct contact with the drug solution. When using the above-mentioned drug solution, the puncture needle is pierced at the location of the rubber stopper to take out the drug solution.

Since the conventional plastic container is manufactured by the complicated process as described above, it is desired to be manufactured by a simpler process. That is, it is preferable that a simple process can be performed so that it is not necessary to collect the rubber stopper to make it and the outlet of the container does not have to be aligned with the rubber stopper. As a result, a plastic infusion container was developed in which a plastic container was manufactured by blow molding, filled with a chemical solution, and then sealed by fusion to make a container, and an elastomer piece was attached by thermal fusion to the chemical solution outlet. There is.

[0004]

[Problems to be Solved by the Invention] However, when the puncture needle is pierced in the place of the elastomer piece in the plastic infusion container with the elastomer piece and the medicinal solution is taken out, the hole of the puncture needle is opened in the elastomer piece more than necessary, The problem is that the liquid leaks out of it. The present invention has been devised to eliminate this liquid leakage.

[0005]

DISCLOSURE OF THE INVENTION The present invention is an infusion container which is manufactured by blow molding from plastics, and is sealed by fusion after filling with a chemical solution, and an elastomer piece is attached to the chemical solution outlet. At
The gist of the infusion container made of plastic is characterized in that the elastomer piece is heat-sealed only around the drug solution outlet.

[0006]

According to the present invention, the elastomer piece of the container is attached around the drug solution outlet by heat fusion, that is, the elastomer portion near the insertion site of the puncture needle is not adhered to the container body. This means that when the puncture needle is inserted into the container of the present invention, the elastomer piece softly wraps around the puncture needle and does not cause liquid leakage. Similarly, even after the puncture needle is removed from the elastomer piece, the hole made by the puncture needle is substantially eliminated by the elastic recovery force of the elastomer.

[0007]

EXAMPLES The present invention will be described in detail with reference to the following examples. FIG. 1 is a front sectional view of an example of the infusion container of the present invention. FIG. 2 is a front sectional view of a conventional infusion container.

In the conventional plastic infusion container, as shown in FIG. 2, an elastomer piece 3 is attached to the container head 2 of the container body 1 by heat fusion over the entire surface, and a heat-shrinkable protective film 5 is used for the head of the container body 1. 2 is a flange 4 near it
It covers up to the place. When the elastomer piece 3 is fixed to the container head 2 as described above, the original characteristics of the elastomer, namely flexibility and stretchability, are lost.
As a result, when a puncture hole is opened in the center of the container head 2 of such a container, a hole having a diameter equal to or larger than the diameter of the needle is formed and the infusion solution leaks. Also, even if the needle is pulled out after the puncture, the elastic recovery force to erase the hole is insufficient.

However, in the present invention, as shown in FIG. 1, the elastomer piece 3 is attached to a part of the container head 2 of the container body 1 by heat fusion and the head of the container body 1 is covered with the heat-shrinkable protective film 5. 2 is covered up to the flange 4 in the vicinity thereof. Since the elastomer piece 3 is not fixed at the center of the container head 2 in this way, the original characteristics of the elastomer, such as flexibility and stretchability, are not lost at this location. As a result, even if a puncture hole is formed in the center of the container head 2 of such a container, the elastomer will adhere to the needle and the infusion solution will not leak. Further, after the puncture, even if the needle is pulled out, the hole can be substantially eliminated by the elastic recovery force of the elastomer.

In the present invention, since the plastic container does not use an adhesive, there is nothing that physically or chemically interacts with the drug solution in the container to affect its properties or quality, and it does not contain microorganisms. It is not transparent. Conventionally known polyethylene, polypropylene, ethylene-propylene copolymer, polyvinyl chloride, etc. are used as examples of the material of the container body.

In the present invention, the procedure for filling the plastic container with the infusion solution is to first fill the container with the drug solution outlet obtained by blow molding with the drug solution and seal the drug solution outlet. Next, an elastomer piece is attached to the drug solution outlet of the container by heat fusion. This elastomer is a variety of thermoplastic resins, of which the hardness (Shore A)
A material having a small compression set and a small compression set is used. Particularly preferred is styrene / ethylene / butylene / styrene block polymer (SEBS).

[0012] Of course, these are tested by the "Japanese Pharmacopoeia General Test Method", and they do not physically or chemically act on the drug solution in the container to affect their properties or quality, and the invasion of microorganisms. Use a product that does not interfere with the use of the content transfusion. This elastomer piece may have a form similar to that of a bottle stopper, but the dimensions are such that it is easy to insert an injection needle into a plastic infusion container, for example, a thickness of 1 to 3 mm and a diameter of a dozen mm. That's good.

In the present invention, the processing conditions for sticking the elastomer piece to the chemical solution outlet of the plastic container by heat fusion are as follows: above the softening temperature of the elastomer and under a pressure of 3 to 5 kg / cm ² for about 40 seconds. I'll do it. It is necessary that the adhesive force of this heat fusion does not come off even if the injection needle is pierced and that the drug solution does not leak through the fused portion.

[0014]

EFFECTS OF THE INVENTION The present invention has a structure in which the elastomer piece is partially attached to the chemical solution outlet of the plastic infusion container by heat fusion, so that the elastomer piece is conventionally entirely attached to the container. The liquid does not leak from the outlet as in the case of

[Brief description of drawings]

FIG. 1 is a front sectional view of an example of an infusion solution container of the present invention.

FIG. 2 is a front sectional view of a conventional infusion container.

[Explanation of symbols]

 1 Container Body 2 Container Head 3 Elastomer Piece 4 Flange 5 Heat Shrinkable Protective Film

Claims (2)

[Scope of utility model registration request] 1. An infusion container manufactured by blow molding from plastic and sealed by fusion after filling with a chemical solution, wherein an elastomer piece is attached to the chemical solution outlet, the elastomer piece being the above-mentioned chemical solution. A plastic infusion container characterized by being heat-sealed only around the outlet. 2. The plastic infusion container according to claim 1, wherein the area of the fusion-bonded portion is smaller than the area of the non-fusion-bonded portion on the surface where the elastomer piece contacts the container.