JPS63117757A - Infusion container - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an infusion container used for storing an intravenous solution or the like.

(Prior Art) Conventionally, an infusion container containing an intravenous liquid or the like has been made of a glass bottle, and has an air hole in the spout so that air can enter the bottle as the intravenous liquid decreases.

It is also conceivable to use a flexible plastic container instead of a bottle so that the container collapses as the amount of intravenous fluid decreases.

(Problems to be solved by the invention) However, when using a glass bottle, the container is more expensive than one made of synthetic resin, and the structure is complicated due to the provision of air holes in the spout, further increasing the price. There was a drawback.

In addition, when using a plastic container, there is a disadvantage that when the container collapses as the intravenous fluid decreases, depending on how it collapses, the intravenous fluid inside may not come out completely. It also has the disadvantage that it is not reproducible and the way the drip solution comes out differs from container to container.

This invention was made in view of the above-mentioned problems, and as the intravenous fluid, etc. flows out from the infusion container, the container always collapses stably into a certain shape, and the infusion fluid, etc. can completely flow out. The purpose is to provide infusion containers.

[Structure of the invention]

(Means for Solving the Problems) The present invention has the shoulder part of a flexible synthetic resin infusion container for storing intravenous fluid etc. sloped in a smooth curved shape from front to back and left and right from the mouth part to the body part. It is a molded infusion container.

(Function) The infusion container of the present invention gradually flattens itself as the liquid inside flows out, and eventually collapses into a substantially flat shape, allowing the contained liquid to flow out sufficiently.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The infusion container 1 of this embodiment has a mouth 2 formed in the upper part of the container, and a flange 3 is provided on the side surface of the mouth 2. From the base of the mouth part 2 is an oval shoulder part 4 with a smooth curved surface.
are formed in the front, back, left and right, and the curved surface of this shoulder portion 4 is a curved surface that is inclined toward the body portion 5 of the container 1. Further, at the joint between the shoulder portion 4 and the body portion 5, the longer diameter side end of the shoulder portion 4 is located vertically lower than the short diameter side end with respect to the mouth portion 2.

The body 5 has an elliptical cross-sectional shape as shown in FIG. formed into a shape. Further, the front and rear surfaces 5b intersecting the short axis of the ellipse are formed in a concave shape slightly curved inside the body portion 5.

The bottom of the body 5 is continuous with a rounded quadrangular bottom 7, and a triangular surface 6 whose base is in contact with the bottom 7 is formed between the side 5a of the body 5 and the bottom 7. ing. Note that the bottom surface portion 7 may be a polygon other than a quadrangle. The triangular surface 6 is formed to be inclined inward toward the bottom surface portion 7.

The infusion container 1 of this embodiment is manufactured by so-called blow molding in a mold having the external shape of this container.

The infusion container 1 of this embodiment stores, for example, an intravenous solution, and during infusion, the infusion solution is guided through a tube with the mouth portion 2 facing down. Here, as the internal pressure of the infusion container 1 decreases as the infusion progresses, the infusion container 1 gradually collapses due to atmospheric pressure. At this time, since the side surface 5a of the body 5 of the infusion container 1 is outwardly convex, and the front and rear surfaces 5b of the body 5 are concave and curved inward, the central axis in the longitudinal direction of the side surface 5a is It bends as a crest line, and the front and rear surfaces 5b of the trunk 5 gradually become depressed and flattened. As the drip further progresses and the drip liquid begins to run out, the body 5 collapses flat and the inner surfaces of the front and rear surfaces 5b of the body 5 contact each other with the inner surface of the bottom surface 7, as shown in FIG. It will collapse. At this time, the triangular surface 6 in contact with the bottom surface 7 falls outward with its base as the center, and as the content liquid decreases, the angle θ between the triangular surface 6 and the bottom surface 7 gradually increases, and the side surface The angle θ2 between the ridge line of 5a and the triangular surface 6 gradually becomes smaller. This is because when the container 1 is turned upside down and the liquid inside it flows out, the force that tries to spread the body part 5 due to the weight of the container 1 and the liquid inside is absorbed by the stable and constant change of the triangular surface 6. It has the effect of stably draining the liquid content while weakening it.

Further, the inner surface of the body section 5 adjacent to the shoulder section 4 collapses in the direction in which it faces and contacts the inner surface of the shoulder section 4, and the angle θ3 formed between the shoulder section 4 and the front and rear surfaces 5b changes as the liquid content decreases. It gradually becomes smaller.

As a result, the deformation of the container 1 caused by the outflow of the liquid inside can be prevented by mainly changing the side surface 5a and the front and rear surfaces 5b of the body 5, and by making the shoulder part 4 into a regular shape. This serves to keep the vertical displacement of the surface of the liquid content constant.

According to this embodiment, the infusion container is molded from a flexible synthetic resin, and its shoulders, body, and bottom are shaped so that they easily collapse into a certain shape as the liquid inside flows out. Therefore, when used as an infusion container for intravenous drip, etc., the deformation of the container is always constant, so the outflow rate of the intravenous solution is constant, and the intravenous solution inside can be naturally and completely drained to the end.

Furthermore, unlike glass bottles, air holes are not required, and the container can be manufactured at low cost.

〔Effect of the invention〕

According to this invention, the shoulder portion where the mouth portion of the infusion container is provided is formed into a curved and inclined shape, so that when the liquid inside flows out, the body portion following the shoulder portion moves as the liquid flows out. It collapses easily and the liquid inside can be completely drained. by this,
The liquid in the container can be used effectively without wasting it.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of this embodiment, and FIG. 3(a) is a sectional view taken along line A-A in FIG. 1.
3(b) is a sectional view taken along line B-B in FIG. 1, FIG. 3(c) is a sectional view taken along line C-C in FIG. 1, and FIG. 4 is a side view showing the usage state of this embodiment. . 1... Infusion container, 2... Mouth part, 4... Shoulder part, 5...
...Torso, 5a...Side part, 5b...Anteroposterior surface, 6
...Triangular surface, 7...Bottom part 1 Fig. 7 Front part-38: Fig. 2 Fig. 3 (cL) Fig. 4

Claims (1)

[Claims] In a flexible synthetic resin infusion container in which the body 5 that stores liquid has an elliptical cross-sectional shape, the oval shoulder 4 connecting the mouth 2 and body 5 of the infusion container is Mouth part 2
The vertical distance from the major axis end of the oval shoulder part 4 to the mouth part 2 is the same as the vertical distance from the minor diameter side end to the mouth part 2. An infusion container characterized in that it is larger than the vertical distance.