JPH052183Y2 - - 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 present invention makes it possible to co-inject other injection solutions or discharge the content without first using a ventilation needle, and furthermore, when discharging the content, We proposed a container for injections that allows accurate visual confirmation of the amount of remaining liquid (Utility Application No. 162136/1982). 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. It concerned containers for liquids. Furthermore, the inventor of the present invention has proposed that the co-injection of other injection solutions or the discharge of the contents without using a ventilation needle can be achieved by using a container whose body has an oval cross-sectional shape that is flatter than the shoulder and the bottom. In the production, management, storage, and conservation processes of containers, the sides of the container should be designed in a substantially straight line from the shoulder to the bottom;
That is, they found that it is advantageous to make the long axis of the oval shape of the body constant, and further proposed the following injection container (Utility Application No. 62-30375). 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 long axis 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.

After various studies, the inventor of the present invention further determined that the intermediate body of the container for injection should be flat in order to make the mixed injection of injection, the discharge of the contents, and the production, management, storage, and preservation of the container even easier. Furthermore, the inventors have discovered that the object can be achieved even better when the length of the periphery and the length of the major axis in the cross section of the container body from the shoulder of the container to the bottom of the container are constant. This is what I did.

That is, the present invention provides a container made of synthetic resin having a hanging device at one end and a pouring/outlet port at the other end, in which the elongated cross-sectional shape of the intermediate body between the container shoulder and the container bottom is the same as that of the shoulder. The bottom part has an elliptical shape, and the intermediate body part has a flattened drum shape, and the length of the periphery and the length of the major axis in the cross section of the container body from the container shoulder to the bottom are constant at the same time. The present invention relates to a container for an injection solution.

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 device is laid down, and is designed to allow the container to stand on its own when the injection solution is injected into the container. be done. 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 cross section of the container body in the present invention is oval and drum-shaped. This cross-sectional shape has a straight portion in the major axis direction around the cross-section. Here, the oval shape has a straight portion in the major axis direction.

In addition, in the present invention, the length of the periphery and the length of the major axis in the cross section of the body from the shoulder of the container to the bottom of the container are made constant at the same time, so that when the container is filled with injection liquid, The body of the container has a uniform oval shape, and the side surface of the container is a straight line from the shoulder of the container to the body of the container. Handling becomes extremely easy, and the structure of the container body facilitates draining of the contents.

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 a drum-shaped container, the wall surface parallel to the major axis is flat, so it easily becomes a flat shape.In other words, the container gradually takes on a flat shape from the top, allowing accurate confirmation of the amount of remaining liquid. and a stable discharge rate can be obtained.

In the intermediate body between the shoulder and bottom of the container, the short axis of the flat shape is the shortest at the liquid level or above the liquid level when the container is suspended, and gradually becomes longer as it goes beyond this point. If it is designed in such a way, it becomes more preferable in terms of discharging the content liquid.

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 a drum-shaped cross-sectional shape that is flatter than the shoulders and the bottom, and the cross-sectional shape of the body from the shoulder to the bottom of the container is By keeping the length of the periphery and the length of the major axis constant at the same time, when the content liquid is discharged from the container, it will definitely begin to flatten from the top of the liquid level, and the part above the liquid level will gradually become flat, and the container will always be flat. A ventilation needle is used because there is no negative pressure inside the container, the content liquid drops uniformly, the content liquid can be discharged smoothly, and the shape can be deformed to accommodate various contents. This makes it easy to co-inject other injection solutions without replacing the air with air.

In addition, the length of the major axis of the cross section of the body from the shoulder to the bottom of the container is constant, and the side surface of the container is approximately straight, making it easier to produce and manage the container itself, and to store and store the container. In addition to being able to make storage and management easier when the container is filled with liquid.

〔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 drum-shaped, 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, 7, and 8 are cross-sectional views at the positions of the container body AA, BB, CC, and DD shown in FIG. 2. . As shown in FIGS. 3 to 8, the shape of the cross section of the container body of the present invention has a straight portion 8 in the major axis direction at the periphery, and the length of the periphery (or circumference) in the cross section Since they are the same, the shoulder and bottom portions are oval, and the middle portion is hourglass-shaped. The location of the container body A-A, i.e. the shoulder, and the location D-D, i.e. the oblong cross section, each have a straight section 8, and one of the intermediate bodies C between the shoulder and the bottom. The shape of the cross section at position -C is the flattest, and has a shape close to a tsutsume shape. In FIG. 2, the position of C-C is in the middle of the barrel near the bottom.
By providing this C-C section, mixed injection and drainage can be facilitated without needle stick.

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

The lengths of the major axis of the cross sections of these container bodies are all the same from the container shoulder to the bottom.

FIG. 9 1 is a longitudinal 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 liquid content (blood substitute), and shows the container shoulder of the container body 2. and the bottom of the container, e.g. C-C
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 increases as you move away from this intermediate region (C-C), and the cross-sectional area gradually increases, with regions A-A (container shoulder) and D where the minor axis is the longest.
-D (bottom of the container) 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, depending on the volume of the co-injected injection solution, the intermediate portions of the container body BB and C-
The length of the minor axis of C becomes longer, the cross-sectional area becomes larger, and the container has the same body as the oval shape of the container shoulder or bottom.

FIG. 9 1-a, FIG. 9 1-b, FIG. 9 1-c and FIG. 9 1-d are container body A- in FIG. 9 1.
It is a cross-sectional view of the A site, the BB site, the CC site, and the DD site. Also, Fig. 9 2-a, Fig. 9 2-
b, Fig. 9 2-c and Fig. 9 2-d show the A-A section, B-B section, and C- of the container body in Fig. 9 2.
It is a cross-sectional view of the C site and the DD site. When there is no liquid content, the shape of the intermediate body between the shoulder and the bottom of the container body is close to a flattened shape at B-B and C-C parts, and when there is liquid content, it is mixedly poured. The length of the minor axis of the container body increases in accordance with the amount of liquid added, and the container body becomes uniformly oval in shape [Figure 9-2-
b, Fig. 9 2-c].

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 provides a container for injection liquid made of synthetic resin, in which the cross section of the intermediate body between the container shoulder and the bottom is shaped like a drum, which is flatter than the shoulder and the bottom.
In addition, by making the length of the periphery and the length of the major axis constant in the cross section of the body from the shoulder of the container to the bottom of the container, it is possible to displace air when co-injecting other injection solutions or discharging the contents. Since no venting needle is required, the operation of co-injecting drugs is simple and hygienic as there is no contamination of the liquid content, and when the liquid content is drained, the container body gradually flattens from above the liquid level. Since the container does not collapse and create negative pressure inside the container, the liquid inside can be smoothly drained 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. At the same time, when the container is filled with liquid, it is also easier to store and manage the container, which is an excellent effect.

[Brief explanation of the drawing]

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 with a stopper, and Fig. 4 is a plan view of one end with a hanging tool. 5 is a cross-sectional view of the section A-A in FIG. 2, FIG. 6 is a cross-sectional view of the section B-B in FIG. 2, and FIG. 7 is a cross-sectional view of the section C-C in FIG. FIG. 8 is a cross-sectional view of the D-D section, FIG. 9 is a diagram showing the mode of action in mixed injection of the injection solution container according to the present invention, and FIG. 9 1 is a diagram showing the injection solution container before mixed injection. Fig. 9 2 is a longitudinal sectional view after mixed injection, Fig. 9 1-
a, Fig. 9 1-b, Fig. 9 1-c, Fig. 9 1-d
and Fig. 9 2-a, Fig. 9 2-b, Fig. 9 2-
c, and Fig. 9 2-d are cross-sectional views at sites A-A, BB, CC, and D-D in Fig. 9 1 and Fig. 9 2, respectively, and Fig. 10 is an injection according to the present invention. FIG. 10 is a longitudinal cross-sectional view of the container before the content liquid is discharged, and FIGS. 10 2 and 10 3 are diagrams showing the mode of operation when the content liquid is discharged from the liquid container. Longitudinal sectional view of the container in progress, Figure 104
is a vertical sectional view of the container when the content liquid has been completely discharged. 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 in the cross section of the container body, 9... Infusion set.

Claims (1)

[Scope of utility model registration request] The container is made of synthetic resin and has a hanging device at one end and a pouring/discharging port at the other end, and the cross-sectional shape of the intermediate body between the container shoulder and the container bottom is an ellipse at the shoulder and the bottom. , an injection solution container in which the middle body has a flattened drum shape, and the length of the periphery and the length of the major axis in the cross section of the container body extending from the container shoulder to the bottom of the container are constant.