JPH0243391Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a communication piece provided at the opening of a medical bag such as a drug solution bag or a blood bag.

[Prior Art and Problems with the Prior Art] Blood bags are known for collecting blood in a sterile state and separating and distributing blood components in a sealed state for storage, infusion, etc.

FIG. 4 shows an example of this bag, which is composed of a blood collection bag 20 equipped with a blood collection tube 23 and a blood collection needle 24, and a plasma collection bag 21.
are airtightly connected.

Further, a connecting tube 25 is inserted and fixed to the upper edge of the blood collection bag 20, and the connecting tube 25
2 is fitted into the upper edge of the connecting tube 25, and inside the connecting tube is a communicating piece 2 that can close the flow path in the connecting tube 25 and open it during use.
6 has been inserted.

Various communication pieces 26 have been proposed in the past, but generally, as shown in FIG. The head 27 is pushed down from the outside of the communication tube 25 and folded.

It is difficult to partially concentrate force on the head 27, which is a small piece, because the communicating tube 25 is relatively thick and the weight of the communicating tube 22 is also added, so a considerable force is required. .

In addition, since the outer diameter of the head 27 is smaller than the inner diameter of the communication tube 15, the flow path of the open tube may sometimes be temporarily blocked during liquid flow, making it difficult to maintain a steady flow rate. Ta.

In order to solve the above problems, the present inventor conducted extensive studies and arrived at the following idea.

[Means for Solving the Problems] The present invention provides a communication piece 1 disposed in a connecting tube 12 attached to a medical bag, in which the body portion 2 and the protruding portion 7 are connected through the cutout portion 3. The body portion 2 has an outer diameter slightly larger than the inner diameter of the connecting cylinder 12, and has a liquid flow path 1 inside.
0 is formed, and the protruding portion 7 has a protruding tip portion 8 formed at its tip, protrusions 4 and recesses 5 are alternately formed on the outer circumferential surface in the longitudinal direction, and a plurality of protruding portions 4 are formed on the outer circumferential surface in the longitudinal direction. The gate 6 is discontinuously formed, the outer diameter of the protrusion 4 is slightly larger than the inner diameter of the connecting cylinder 12, and the slope 9 of the protrusion 4 is formed to be inclined in the direction of the protrusion tip 8. A communicating piece 1 is provided.

[Function] By breaking the notch 3 formed between the protrusion 7 and the body 2, a liquid flow path is opened, and at the same time, the protrusion 4 moves only in the direction of the protrusion tip 8, and is pushed back by the pressure of the liquid. Since there is no leakage, a stable flow path for the liquid can be ensured from beginning to end, and a constant flow rate can be maintained.

[Example] Figure 1 shows a connecting tube 12 attached to a medical bag.
1 shows a schematic view of the communicating piece 1 of the present invention placed in the interior.

The communication piece 1 is constructed by integrally molding a body part 2 and a protrusion part 7, and a cutout part 3 which can be broken by finger pressure is formed between them.

The outer diameter of the body portion 2 is slightly larger than the inner diameter of the connecting tube 12, and a liquid flow path 10 is formed inside.

The protruding portion 7 has a protruding tip portion 8 formed at its tip, protrusions 4 and recesses 5 alternately formed on the outer circumferential surface in the longitudinal direction, and a plurality of gates 6 on the outer circumferential surface in the longitudinal direction. They are formed continuously (for example, in four locations).

The outer diameter of the convex portion 4 is formed to be slightly larger than the inner diameter of the connecting cylinder 12, and the slope 9 of the convex portion 4 is formed to be inclined in the direction of the protruding tip portion 8.

FIG. 2 is a state diagram showing an example of when the liquid stored in the medical bag 11 is discharged to the outside by breaking the communicating piece 1, and FIG. 3 is a state diagram showing an example of how the communicating piece 1 is broken. shows.

When the liquid in the medical bag 11 is introduced into the connecting cylinder 12, the liquid changes its flow in an annular manner along the outer circumferential surface of the protruding tip 8, avoiding the first protrusion 4,
After entering the gates 6 at four locations, the notch 3
reach up to.

Next, after pressing the protrusion 7 from the outside of the connecting cylinder 1 (the protrusion 4 is formed on the outer circumference of the protrusion 7, it is easy to fix it from the outside), grip the body part 2 and Apply a force F in the direction of 〓 to 〓 while bending it in the shape of 〓 until the notch part 3 breaks. At this time, since the slope 9 is formed in the direction of the protruding tip 8, the convex portion 4 can only move in the direction of the protruding tip 8.

In this bent state, the convex part 4a moves to the position A, and then when force is applied to return the communicating tube 12, which has been deformed into the shape of a 〓, to its original state, the opposite side of the convex part 4a is moved. The convex portion 4b will also move to the position A.

By the above operations, it is possible to easily form a gap of approximately 1 mm between the body portion 2 and the protruding portion 7, which is necessary to maintain the fluid flow function.

The liquid passes through the gap to the fluid flow path 10, the connection tube 12, and the liquid transfer tube 13 in the body 2.
It is then discharged.

At this time, the outer diameter of the convex part 4 of the protruding part 7, which has moved by about 1 mm, is formed to be slightly larger than the inner diameter of the communicating tube 12, so it is fixed tightly to the communicating tube 12, and the medical bag 11 can be seen from the direction. It is pushed back by the pressure of the incoming liquid and returns to its original position without blocking the flow path of the liquid.

[Effects of the invention] As explained above, in the present invention, the protrusion 7 can be easily broken by gripping the protrusion 4 formed on the protrusion 7 and applying force to the body 2, and at the same time, the protrusion 7 can be easily broken at the tip of the protrusion. Since it moves only in the direction of section 8 and never closes the flow path once opened, a stable flow rate can be ensured from beginning to end.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the communicating piece of the present invention, Figs. 2 and 3 are usage diagrams of the communicating piece of the present invention, Fig. 4 is a schematic diagram of a blood bag, and Fig. 5 is a conventional communicating piece. A schematic diagram is shown. In the figure, 1 is a communicating piece, 2 is a body part, 3 is a notch part, 4 is a convex part, 5 is a concave part, 6 is a gate, 7 is a protrusion part, 8 is a protrusion tip part, 9 is a slope, 10 is a liquid Shows the flow path.

Claims (1)

[Claims for Utility Model Registration] A communication piece 1 disposed in a connecting tube 12 attached to a medical bag, in which a body portion 2 and a protruding portion 7 are integrally formed via a cutout portion 3, and the above-mentioned The body portion 2 has an outer diameter slightly larger than the inner diameter of the connecting cylinder 12, and has a liquid flow path 1 inside.
0 is formed, and the protruding portion 7 has a protruding tip portion 8 formed at its tip, protrusions 4 and recesses 5 are alternately formed on the outer circumferential surface in the longitudinal direction, and a plurality of protruding portions 4 are formed on the outer circumferential surface in the longitudinal direction. The gate 6 is discontinuously formed, the outer diameter of the protrusion 4 is slightly larger than the inner diameter of the connecting cylinder 12, and the slope 9 of the protrusion 4 is formed to be inclined in the direction of the protrusion tip 8. Communication piece 1 characterized by the following.