JPH04108557U - Side injection tube for infusion circuit - Google Patents

Abstract

(57) [Summary] [Purpose] No dead space for infusion in the side injection tube,
It can accommodate the length of the injection needle and maintains the verticality of the infusion line. [Structure] Bend the infusion discharge tube following the rubber port (1) into a dogleg shape, and connect the short tube (4) directly below the rubber port (1).
is installed horizontally, and an infusion inlet tube (5) is installed upright from the tube end of the branch short tube so as to be in line with the bent lower half (3) of the infusion outlet tube.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the improvement of the side injection pipe installed in the mixed injection part in the middle of the infusion line. It is.

0002

[Conventional technology]

A mixed injection section is installed in the middle of the infusion line for supplying nutritional solutions to patients, and medicines, etc. are supplied as needed. It is generally added as necessary. Conventional lateral tube used in this mixed injection section (referred to as side injection pipe A), the upper and lower ends of which are connected to the infusion line as shown in Figure 3. A side injection part is provided by branching diagonally from the middle of the main pipe. A method of injecting by inserting the injection needle at the tip of the supply line is adopted. However, in this side injection tube A, the main tube and the branch tube for needle puncture intersect in a diagonal Y shape. Depending on the length of the needle, the tip of the needle may pierce the wall of the main tube. There is a possibility that

0003 In order to avoid the above problem, a side injection pipe (referred to as side injection pipe (B)) as shown in Figure 4 is also used. It is used. In the side injection pipe B, an infusion injection pipe intersects with the side injection pipe in a Y-shape, and the injection pipe is connected to the side injection pipe. This structure replaces the upper part of the main tube in A and the branch tube for puncturing the injection needle, so that the needle does not stick into the branch tube. Although there is no risk of being hit, there is a risk of injury to the side injection part of the infusion line, which did not occur with side injection pipe A. A “dog”-shaped bend occurs. This bend in the infusion line is Not only does it look unattractive when printing, but if multiple lines are used, the lines It was confusing, there was a lot of risk of making mistakes, and it was difficult to organize. In addition, for both side injection pipes A and B, there is a main line at the bottom of the side injection pipe rubber port. On the other hand, a dead space is created, and liquid and air accumulate, which is not desirable from a medical standpoint.

0004

[Problem that the idea aims to solve]

In view of the above circumstances, the inventor decided that the infusion line would be able to accommodate long injection needles and that the infusion line could be used for side injection. Maintains verticality without bending at the bottom, and creates dead space at the bottom of the rubber port. After repeated studies on the structure of the side injection pipe, we completed this idea.

[0005]

[Means to solve the problem]

Thus, according to the present invention, it is possible to "open" the infusion discharge pipe following the rubber port (1) of the side injection pipe. Bend it in the shape of a square, and place the short branch tube (4) horizontally just below the rubber port of the bent upper half of the infusion tube (2). From the pipe end of the branch short pipe, connect the infusion inflow pipe (5) to the bent lower half (3) of the infusion discharge pipe. A side injection pipe for an infusion circuit is provided, characterized in that it is installed vertically in a straight line with the infusion circuit. Ru.

[0006] An embodiment of the side injection pipe according to the present invention will be described based on the drawings. Figure 1 is a longitudinal cross-sectional view, showing the infusion discharge pipe downward from the rubber port (1) on the side injection part side of the side injection tube. The infusion discharge tube is bent in the shape of a dogleg in the middle, and the upper half of the bend (2) It consists of the lower half of the song. The length of the bent upper half is designed to accommodate long injection needles. is of sufficient length. Bend the short branch pipe (4) from just below the rubber port (1). It is installed horizontally so that the included angle (α) with the half part is almost a right angle, and the pipe end of this branch short pipe (4) The infusion inflow pipe (5) is erected along the same straight line as the bent lower half (3) of the infusion discharge pipe. It is. The length of the bent short tube is designed to shorten the inflow route and prevent entanglement with other infusion tubes. To avoid this, it is preferable to keep it as short as possible. (8) is the rubber port cap. (9) is a support plate for reinforcement. In addition, a circular through hole (6) is drilled in the wall of the infusion inflow pipe (5) corresponding to the lumen extension of the branch short pipe. A plug (7) is tightly fitted into this circular hole. Figure 2 shows the bent short tube and bent upper half. This is a cross-sectional view of a device with an acute angle between the two parts. Although the shape is different from the above example, Noh is exactly the same. Although not shown, there are also cases where the included angle is a right angle, an acute angle, and an obtuse angle. can also be used. The side injection pipe according to the present invention is made of hard transparent plastic, such as hard vinyl chloride. Each tube section of the tube may be made separately and integrated by welding or gluing, but the above By providing a circular through hole in the mold, the core for the bent short tube part and other parts can be placed in the mold. The cores are combined and molded, and the core of the branch short tube is pulled out from the molded body through the circular hole. This enables one-shot molding, greatly reducing manufacturing costs. be able to. Further, the plug body can also be provided integrally during molding.

[0007]

[Effect]

With the side injection tube of this invention, the infusion fluid flows out from directly below the rubber port into the infusion discharge tube, resulting in a dead space. does not generate any space. Therefore, the length of the upper half of the fold is made long enough regardless of the dead space. The length can be made to accommodate a small injection needle. Also, close the infusion drain tube. By bending it in the shape of a letter, the upper and lower parts of the infusion tube, with the side injection tube in between, are separated by the upper half of the bend. Verticality is maintained by gravity without being affected by length. In addition, for side injection operation In this case, it may be necessary to operate the injection needle from an angle away from the main infusion line. and has excellent operability.

[0008]

[Effect of the idea]

According to this invention, there is no dead space in the side injection tube, and even long injection needles can be filled. Since the verticality of the infusion line is maintained, it is easy to organize multiple lines. It is easy to use, does not mix with other lines, and there is no risk of making mistakes.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of a side injection tube for an infusion circuit according to the present invention.

FIG. 2 is a longitudinal cross-sectional view of another embodiment of the side injection tube for an infusion circuit according to the present invention.

FIG. 3 is a longitudinal cross-sectional view of a conventional side injection tube (A) for an infusion circuit.

FIG. 4 is a longitudinal cross-sectional view of a conventional side injection tube (B) for an infusion circuit.

[Explanation of symbols]

1 Rubber port 2 Folded upper half 3 Bent lower half 4 Branch short pipe 5 Infusion inflow tube 6 Circular hole 7 Plug body

Claims (2)

[Scope of utility model registration request] Claim 1: The infusion discharge tube following the rubber port (1) of the side injection tube is bent into a dogleg shape, and the bent upper half (2) of the infusion tube is bent.
A short branch pipe (4) is placed horizontally just below the rubber port of the tube, and from the pipe end of the short branch pipe, connect the infusion inlet pipe (5) so that it is in line with the bent lower half (3) of the infusion discharge pipe. A side injection pipe for an infusion circuit, characterized in that it is installed vertically. 2. A short pipe (4) branched at the wall of the infusion inflow pipe (4).
2. The side injection tube for an infusion circuit according to claim 1, wherein a circular through hole (6) is provided in a portion corresponding to the lumen extension, and a plug (7) is tightly fitted into the circular through hole.