JPH0529714Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is particularly directed to a synthetic resin injection container for storing physiological saline, blood substitutes such as Ringer's solution, sugar solutions, protein-amino acid solutions, or other injection solutions. Regarding.

[Conventional technology]

Traditionally, glass bottles were often used as containers for this type of injection, but glass bottles were difficult to handle due to their easy breakage, heavy weight, and difficulty in disposing of empty containers. In recent years, blow-molded bottles made of synthetic resins such as polyethylene or polypropylene have been widely used. However, like glass bottles, blow-molded bottles create a negative pressure inside the container when the liquid inside the bottle is drained without using a ventilation needle, and the outflow of the liquid stops. For this reason, it is necessary to supply outside air into the container using a ventilation needle, but in this case, there is a problem that bacteria and dust in the atmosphere flow into the container together with the outside air, contaminating the liquid content.

To solve this problem, a blow-molded bottle has been proposed in which the liquid inside is discharged without using a ventilation needle. In this type of container, by using a flexible material, as the content liquid is drained,
The body of the container is designed to be flattened.

[Problem that the invention attempts to solve]

However, in the structure of conventional blow-molded bottles in which the liquid is discharged without using a ventilation needle, the cross-sectional shape of the container body is constant from the bottom to the shoulder, so the liquid in the bottle is actually discharged. When the container is drained, the container collapses flat from the center of the container and the liquid content decreases, but the liquid remains at the top of the container and the liquid level does not drop, making it possible to visually check the exact amount of remaining liquid. I was unable to confirm this.

Furthermore, with the above-mentioned conventional configuration, it is not possible to take a shape that deforms depending on the size of the internal volume, such as when only the internal liquid is contained or when other injection liquid is added to it. Therefore, when co-injecting another drug into a container containing liquid, it is necessary to use a ventilation needle to expel the air inside the container.

[Means for solving problems]

Therefore, in order to solve the above-mentioned problems of the conventional technology, the inventor of the present invention first proposed a method that allows co-injection of other injection liquids or discharge of the liquid content without using a ventilation needle, and furthermore, allows the injection of other injection liquids or the discharge of the liquid content without using a ventilation needle. We proposed a container for injections that allows for accurate visual confirmation of the amount of remaining liquid (Utility Application No. 162136, 1983, Utility Model Application No. 162136,
No. 70525).

This device is a synthetic resin container that has a hanging device at one end and a pouring/outlet port at the other end, and the cross section of the container body is oval. An injection in which the intermediate body has an oval cross-sectional shape that is flatter than the shoulder and the bottom, and the length of the circumference of the oval of the container body from the shoulder to the bottom of the container is constant. This invention relates to containers for liquids.

As a result of further study, the inventor of the present invention found that it is possible to co-inject other injection liquids without using a ventilation needle, or to discharge the contents without using a vent needle. In the production, management, storage, and conservation processes of containers, the sides of the container should be designed in a nearly straight line from the shoulder to the bottom, i.e., the long axis of the oval shape of the body should be found that it is advantageous to keep it constant,
This has led to the present invention.

That is, the present invention is a synthetic resin container having a hanging device at one end, a pouring outlet at the other end, and an oval cross-sectional shape of the container body. The cross-sectional elliptical shape of the intermediate body part between is an elliptical shape that is flatter than the shoulder part and the bottom part over the entire area,
This invention relates to a synthetic resin injection container in which the length of the long axis of the oval shape of the container body extending from the container shoulder to the container bottom is constant.

In the present invention, the hanging device is usually provided at the center of the bottom of the container. The bottom of the container has a recess in the center and is designed to fit below the bottom surface when the hanging tool is laid down, and is designed to allow the container to stand on its own when the injection solution is injected into the container. Ru. The inlet/outlet has a structure that can be sealed with a stopper, and an infusion set communicating with the injection needle is inserted into the inlet/outlet.

The container body in the present invention has an oval cross section. This elliptical shape has a straight line portion in the major axis direction on its circumference, and the straight line portion becomes longer in the flattened oval of the intermediate body between the container shoulder and the bottom. Here, the flat ellipse refers to an ellipse in which the length of its minor axis is shorter, and therefore, as described above, the straight portion in the major axis direction is longer.

In addition, in the present invention, the length of the long axis of the oval shape of the body from the container shoulder to the container bottom is constant, and the side surface of the container is approximately straight from the container shoulder to the container body. This makes it extremely easy to handle the container during the production and management of the container itself, or the preservation and storage process, and the structure of the container body facilitates the discharge of the liquid content.

Conventionally, this type of container has an elliptical cross-sectional shape, and in the case of an ellipse, the container wall surface parallel to the major axis of the container is convex (⌒). In the case of an elliptical shape, when the liquid inside the container is drained, the minor axis becomes shorter and the shape tries to become flat, but since the wall surface is convex, it is difficult to become flat, and therefore, the liquid level of the container Either the minor axis of the bottom of the container becomes shorter, or the wall surface of the container suddenly turns over when the content liquid is discharged. As a result, residual liquid remains at the top of the container, making it impossible to check the exact amount of remaining liquid.
Moreover, a uniform discharge rate cannot be obtained.

On the other hand, in the case of an elliptical shape, since the container wall surface parallel to the major axis is flat, it easily becomes a flat shape. confirmation and stable discharge speed can be obtained.

The length of the short axis of the cross section of the container body may be uniform throughout the body, and the shortest part of the short axis may be at the top, middle, or bottom of the body. You can.

In the intermediate body between the shoulder and the bottom of the container, when the short axis of the flat oval shape is at the liquid level or above this point when the container is suspended, it is shortest and gradually becomes longer as it goes beyond this point. If designed so that

The material forming the container body should not react in any way when it comes into contact with the injection solution, nor do it alter the quality of the injection solution.
A thermoplastic synthetic resin that can withstand sterilization at temperatures of 100°C or higher, such as polyethylene, polypropylene,
Examples include polyethylene-vinyl acetate copolymer and soft vinyl chloride.

[Effect]

In the present invention, the intermediate body between the shoulder and the bottom of the synthetic resin container has an oval cross-sectional shape that is flatter than the shoulder and the bottom, and the cross section of the body from the shoulder to the bottom of the container has an oval cross-sectional shape. By making the length of the major axis of the oval surface constant, when the content liquid is discharged from the container, it will definitely begin to collapse from above the liquid level, and the upper part of the liquid surface will gradually become flat, and the inside of the container will always be flattened. There is no negative pressure, the content liquid drops uniformly, the content liquid is drained smoothly, and the shape can be deformed to accommodate various content volumes. It is possible to co-inject other injection solutions without substitution.

The length of the major diameter axis of the oval shape of the body from the shoulder to the bottom of the container is constant, and the sides of the container are approximately straight, making it easy to produce, manage, preserve, and store the container body. be able to.

〔Example〕

The present invention will be described in detail below based on an embodiment shown in the drawings.

FIG. 1 is a front view of the injection solution container of the present invention, and FIG. 2 is a side view of the injection solution container.

In the drawings, 1 indicates a container body for storing an injection solution, 2 a container body whose cross-sectional shape is oval, 3 a container bottom, 4 a hanging tool,
5 is the container shoulder. 6 is an injection solution inlet/outlet, and 7 is a stopper for sealing the injection solution inlet/outlet. The container body 2 has a flattened intermediate portion between the container shoulder 5 and the bottom 3.

FIG. 3 is a plan view as seen from the pouring/discharging port 6 side, and FIG. 4 is a plan view as seen from the container bottom 3 side. 5, 6, and 7 are cross-sectional views taken along the container body AA, BB, and CC in FIG. 2. As shown in FIGS. 3 to 7, the cross-sectional shape of the container body of the present invention is an ellipse having a straight portion 8 in the major axis direction on its circumference. The rectilinear portion 8 of the oval cross section at the position A-A, that is, the shoulder, and the position C-C, that is, the bottom, is short, and one of the intermediate bodies between the shoulder and the bottom. The oval cross section at the position BB is the flattest and the straight portion 8 is the longest. In Fig. 1, the B-B position is located in the middle of the torso, and in Figs. 8 1 and 8 2, the B-B portion is designed to be at the upper and lower torso, respectively. There is. By providing this B-B section, mixed injection and drainage can be facilitated without needle stick.

The visibility of the scale at the time of discharge differs slightly depending on the position of B-B, but it is generally preferable to have it near the bottom of the container.

The length of the major axis of the ellipse of each of these container bodies is configured to be the same from the container shoulder to the bottom.

FIG. 9 1 is a cross-sectional view of the container of the present invention, showing the state before other injections are co-injected into the container for injection containing the liquid content (blood substitute), and shows the container shoulder of the container body 2. and the bottom of the container, e.g. B-B
The length of the minor axis of the cross section is the shortest, and the cross-sectional area is the smallest. The length of the minor axis gradually becomes longer as you move away from this intermediate region (B-B), and the cross-sectional area gradually increases, with regions A-A (container shoulder) and C where the length of the minor axis is longest.
-C (container bottom) has the largest cross-sectional area. FIG. 9 2 is a longitudinal sectional view when another injection solution is mixedly injected into the injection solution container of the present invention. Due to the flexibility of the material of the container body, the length of the minor axis of the intermediate portion B-B of the container body increases depending on the volume of the co-injected injection solution, and the cross-sectional area increases. The container has a body that is almost oval at the bottom.

Figure 9 1-a, Figure 9 1-b and Figure 9 1-c
are the container body A-A section and B-B in Fig. 91.
It is a cross-sectional view of the site and the CC site. Further, Fig. 9 2-a, Fig. 9 2-b, and Fig. 9 2-c are cross-sectional views of the A-A section, the B-B section, and the C-C section of the container body in Fig. 9 2. be. If there is no liquid, the intermediate body B- between the shoulder and the bottom of the container body
In part B, it is a flat oval shape, and if there is liquid in the container, the length of the minor axis of the container body increases in response to the amount of mixedly injected liquid, and the container body becomes an oval shape with a slightly shorter major axis. 9 Figure 2-b).

FIG. 10 is a vertical cross-sectional view showing a state in which other injections have been co-injected and before discharge begins; this is a vertical cross-sectional view showing the state in which the suspension device 4 is placed on an infusion stand, the container body 1 is hung, and the infusion solution is set on the stopper 7. This is for puncturing the needle No. 9 to drain the liquid inside. The case shown in FIG. 10 and 2 indicates that the liquid content is not completely filled, and that the liquid level area of the container body or the area above it is flat. That is, when the discharge of the content liquid starts, the inside of the container becomes negative pressure, and the container body 2 definitely starts to flatten from the portion where the short axis of the cross section of the container body 2 is formed to be the shortest.
Note that the negative pressure inside the container disappears when the container is flattened. In the injection solution container of the present invention, when the container main body 1 is suspended, the liquid level part or the part above this becomes flat, so that the liquid content does not remain on the upper part of the container main body 1.

FIGS. 10-2 and 10-3 are longitudinal cross-sectional views of the injection solution container of the present invention in a state where the content liquid is being discharged. As the content liquid continues to drain, the length of the minor axis of the cross section of the liquid level part of the container body will always become shorter than the length of the minor axis of the part below this.
The oblique planes 10 are formed sequentially from the upper part, and the state shown in FIG. 10 is reached when the discharge is completed. FIG. 10 is a longitudinal sectional view of the injection container of the present invention, showing the state at the end of discharging the contents.

As described above, in the injection solution container of the present invention, the liquid contained therein is smoothly discharged, and the liquid level is uniformly lowered by forming oblique planes sequentially from the portion above the liquid level.

[Effects of this invention]

As explained above, the present invention is a synthetic resin injection container whose body has an oval cross-sectional shape, and the intermediate body between the container shoulder and the bottom has an oval cross-section. By making the body into a flat oval shape and by making the long axis of the oval shape of the body constant from the shoulder of the container to the bottom of the container, air can be replaced when co-injecting other injection solutions and discharging the contents. Since there is no need for a ventilation needle for the injection of drugs, the operation for co-injecting drugs is simple and hygienic since there is no contamination of the liquid contents. Since it collapses flat and does not create negative pressure inside the container, the liquid inside can be drained smoothly and the amount of remaining liquid can be accurately confirmed visually.

In addition, the length of the long axis of the oval shape of the container body is constant over the entire length, and the side surface of the container is approximately straight from the container shoulder to the bottom, making it easy to produce, manage, preserve, and store the container body. It has the excellent effect of

[Brief explanation of drawings]

Fig. 1 is a front view of an injection container according to the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan view of one end having a stopper, and Fig. 4 is a same plan view of one end having a hanging tool. A plan view, FIG. 5 is a cross-sectional view of the section A-A in FIG. 2,
6 is a cross-sectional view of the section B-B in FIG. 2, FIG. 7 is a cross-sectional view of the section C-C in FIG. 2, and FIG. 8 is a diagram showing the position of the section B-B. Figure 1 is a diagram showing that the B-B part is at the top, Figure 8, 2 is a diagram showing that the B-B part is at the bottom, and Figure 9 is a diagram showing the working mode of the injection solution container according to the present invention in mixed injection. Yes, Fig. 9 1 is a vertical cross-sectional view of the injection solution container before mixed injection;
FIG. 2 is a longitudinal sectional view after mixed injection, FIG. 9 1-a, FIG. 9 1-b, FIG. 9 1-c, and FIG. 9 2-a, 9
Figures 2-b and 9-2-c are cross-sectional views taken at portions A-A, B-B, and CC of Figures 9-1 and 2, respectively, and Figure 10 is an injection solution according to the present invention. It is a diagram showing the mode of action when discharging the contents of the container.
Fig. 10 1 is a vertical cross-sectional view of the container before the content liquid is discharged, Figs. 10 2 and 10 3 are longitudinal sectional views of the container while the content liquid is being discharged, and Fig. 10 4 is a longitudinal sectional view of the container before the content liquid is discharged. FIG. 3 is a vertical cross-sectional view of the container when completed. 1... Container for injection solution, 2... Container body, 3...
Container bottom, 4... Hanging tool, 5... Container shoulder, 6...
...Injection/discharge port, 7... Stopper, 8... Straight line portion with oval cross section of container body, 9... Infusion set.

Claims (1)

[Scope of utility model registration request] A container made of synthetic resin having a hanging device at one end and a pouring/outlet port at the other end, the container body having an oval cross-sectional shape, the intermediate body between the container shoulder and the container bottom. A synthetic resin whose cross-sectional oval shape is flatter than the shoulder and the bottom over the entire area, and the length of the long axis of the oval of the container body from the container shoulder to the container bottom is constant. Container for manufactured injection liquid.