JPH0354746Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a plastic container for infusion, which is molded from flexible thermoplastic plastic and contains infusions for intravenous injection, such as blood and plasma substitutes. In particular, the present invention relates to a plastic container for infusion having an opening on one side in the height direction.

[Conventional technology]

The above-mentioned conventional plastic containers for infusions had smooth outer surfaces because it was necessary to see through the inside of the container well in order to judge the hygiene inside the container.

[Problem that the invention attempts to solve]

When you try to insert a needle into the rubber stopper at the mouth of a plastic infusion container containing an infusion solution and hold down the body or shoulder of the container with one hand, this part becomes smooth as described above. Because of this, my hand slipped and I sometimes failed to insert the needle. If the container is strongly pressed to prevent this, the container, which is already flexible, will deform and its internal pressure will increase, causing the infusion to leak out from the hole into which the needle was inserted.

[Means and actions for solving problems]

The present invention was developed in consideration of the above-mentioned problems, and it is possible to firmly hold the container without slipping when inserting the needle, so that the needle can be inserted without failure, and the needle can be inserted without increasing the internal pressure. Furthermore, when molded by blow molding, the aim is to provide a plastic container for infusions that can improve the air release at the corner of the shoulder, where air release is most difficult, and improve the appearance of this area. The configuration is a plastic container for infusion that is molded from flexible thermoplastic plastic and has a mouth on one end in the height direction through a shoulder, and has an uneven surface on the corner of the shoulder. When pressing the container, such as when inserting a needle into the opening, the insert is pressed against the uneven surface.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

In the figure, 1 is a container base, and 2 is a mouth protruding from one side of the container body 1 in the height direction. The other end of the container main body 1 has a flat bottom 3 so that it can stand on its own, and a hanger (not shown) is protruded from the bottom 3 so that it can be bent freely. After sealing the infusion in the mouth part 2,
It is closed with a stopper 4 having a pull top 5 with a rubber stopper enclosed.

The container body 1 has a body part 1a and a shoulder part 1b from which the mouth part 2 is protruded, and a predetermined area is formed on the outer surface of the corner of the shoulder where the body part 1a and the shoulder part 1b intersect. An uneven surface 6 is provided throughout.

The planar shape of the uneven surface 6 provided at the corner of the shoulder is an inverted triangle as shown in FIG. 2, or a band shape covering the entire circumference of the container body 1 as shown in FIG. Make it circular like this. Note that this shape is not limited to the above-mentioned shape, and may be in the shape of a mark or the like.

The uneven surface 6 may be provided at one location if it is provided partially, but it may be provided at two locations in opposing directions.

The uneven shape of the uneven surface 6 is a shape in which a large number of protrusions 7 are provided in a striped manner as shown in FIGS. 2 and 5.
Alternatively, it may be embossed as shown in FIG. 4, or it may be an aggregate of a large number of protruding points. The height B of the protrusion 7 on the uneven surface 6 is the thickness A of this part.
It is becoming smaller compared to In this example, the wall thickness is 0.4 mm, and the height of the protrusion 7 is 0.1 mm.
It is. If the height B of the protrusion 7 exceeds the wall thickness A, the protrusion 7 will act as a rib, and when the container is hung upside down and drips naturally, this part will remain without being depressed. , it becomes a dead space and dripping does not proceed.

The container in the present invention is molded by blow molding, and the molding material used is one that is flexible and transparent, for example, an ethylene-propylene random copolymer containing 5 mol% ethylene. .

The above flexibility is based on the flexural modulus (JIS K7203).
10000Kg/ ^cm2 or less, preferably 7000Kg/cm2 or less
cm ² or less, and the transparency is determined by the total light transmittance (JIS
K6714) is 75% or more.

In addition to the materials shown in the above embodiments, the flexible and transparent materials include high-pressure low-density polyethylene, linear low-density polyethylene, and multilayer structures mainly made of these materials.

Further, in the above embodiment, an example was shown in which the uneven surface 6 was provided at the corner of the shoulder which was formed into an arc, but the corner of the shoulder where the uneven surface 6 is provided is not necessarily arc-shaped and may be shaped like this.

In the above configuration, the container body 1 containing the infusion solution
First, pull off the pull-top 5 of the stopper body 4, and then insert the needle into the rubber stopper inside the mouth part 2. Perform this series of movements with your listening arm,
This is done by holding the container with the other hand, but by placing the fingers of the holding hand on the uneven surface 6 provided at the corner of the shoulder, the container can be held in a stable state without slipping. In addition, since this pressing position is at the corner of the shoulder, this part is relatively rigid even in a flexible container, so the container will not deform even if pressed a little hard. Insertion of the needle takes place without increasing the internal pressure of the container.

In addition, when the above container is molded by blow molding, air removal at the shoulder corner is poor and wrinkles tend to occur in this area, but by molding the uneven surface 6 in this area, air removal in this area is improved. It is done.

As described above, when the shoulder corner of the present invention is used to hold down a container, it is possible to achieve the purpose as long as it is a relatively rigid part.
This refers to the relatively rigid portion extending from a to the shoulder portion 1b.

[Effect of idea]

According to the present invention, when inserting the needle, by holding the container with the uneven surface 6 provided at the corner of the shoulder of the container, the container can be held firmly without slipping, thereby preventing failure in needle insertion. disappears. In addition, since the container can be held without slipping, it can be held with a small amount of force, which eliminates the increase in internal pressure of the container due to pressure when inserting the needle, and the needle can be held without increasing the internal pressure of the container. can be inserted. Furthermore, blow molding improves the air release from the shoulder corners where air release is most difficult, making it possible to improve the appearance of this area. Furthermore, the unevenness constituting the uneven surface 6 is provided only on the outer surface of the shoulder corner of the container,
Moreover, due to the fine unevenness, this uneven surface 6
There is no rib effect, therefore, the variable shape of this part is not impaired, and this part does not become a dead space during natural dripping of the infusion.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view, FIGS. 2 to 4 are front views of main parts,
FIG. 5 is an enlarged sectional view of the main part. 1 is the container body, 2 is the opening, and 6 is the uneven surface.

Claims (1)

[Scope of utility model registration request] In a plastic infusion container molded from flexible thermoplastic plastic and having a spout 2 on one side of the height, the container has fine irregularities only on the outer surface of the shoulder corner where the spout 2 is provided. A plastic container for infusion, characterized by having a surface 6.