JP2577571Y2 - Communication member - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a communication member provided at a mouth portion of a medical bag such as a medical solution bag or a blood bag, and more particularly, to integrally form a mounting groove of a liquid transfer tube by injection molding. It is an object of the present invention to provide a communication member in which the diameter of the liquid flow path of the large diameter portion is increased and a sufficient flow path can be ensured in the connecting cylinder.

[0002]

2. Description of the Related Art Conventionally, various communication pieces have been proposed. Generally, as shown in FIG. 10, for example, as shown in FIG. 28, a thin portion 29 is formed, and the small-diameter portion 27 is pushed down from the outside of the connecting cylinder 25 to be folded. Since the outer diameter of the small diameter portion 27 is formed to be substantially the same as the inner diameter of the liquid transfer tube 22, the small diameter portion 27 may block the liquid transfer tube 22 after cutting the small diameter portion 27.

[0003] Partial concentration of the force on the small diameter portion 27, which is a small piece, requires a considerable force because the connecting tube 25 is relatively thick and the weight of the liquid transfer tube 22 is added. It was difficult. For example, it was necessary to apply a force higher than the actual cutting force because of the sense of bending depending on the cutting direction.

Since the outer diameter of the small-diameter portion 27 is smaller than the inner diameter of the connecting cylinder 25, a phenomenon that the flow path of the large-diameter portion 28 which is opened during the flow of the liquid is temporarily interrupted is sometimes observed. It was difficult to maintain. Further, since the diameter D6 of the liquid flow path of the large diameter portion 28 is set to about 4 mm, and the diameter D5 of the liquid flow port near the thin portion 29 is set to about 2 mm, a sufficient flow rate could not be secured. The inventor of the present invention has made intensive studies to solve the above problems, and has reached the following invention.

[0005]

According to the present invention, a small-diameter portion 2 and a large-diameter portion 3 are integrally formed via a thin portion 4, and a diameter D2 is formed in the large-diameter portion 3 to 3 to 10 mm. Liquid channel 8 is formed, a groove 6 is formed at the tip of the small-diameter portion 2, and a slope 5 is formed on the long diameter L side of the front side surface,
The diameter D1 of the liquid outlet 9 near the thin portion 4 is 2 to 5 mm
And the ratio R1 between the diameter D2 and the diameter D1 = D2 / D1
Is provided from 1 to 1.3 .

The present invention also provides a liquid flow path in which a small diameter portion 12 and a large diameter portion 13 are integrally formed via a thin portion 14, and a diameter D4 is formed in the large diameter portion 13 from 2 mm to 3 mm. 18, a groove 16 is formed at the tip of the small diameter portion 12, a slope 15 is formed on the long diameter L side of the front side surface, and a wing portion 17 is formed on the outer periphery.
The diameter D3 of the liquid outlet 19 in the vicinity of 4 is from 1.9 mm to 2.
2 mm, and the ratio R2 = D4 between the diameter D4 and the diameter D3.
A communication member 11 having / D3 of 1 to 1.3 is provided.

[0007]

FIG. 1 is a schematic view of a communication member 1 according to the present invention.
2 is a view as seen from the direction of the arrow A in FIG. 1, and FIG. 3 is a view as viewed from the direction of the arrow B in FIG. The communication member 1 is formed integrally with a small diameter portion 2 and a large diameter portion 3 via a thin portion 4 which can be broken by finger pressure. The large-diameter portion 3 is provided therein with a liquid flow path 8 having a diameter D2 of 3 mm to 10 mm so that a sufficient flow rate of the liquid can be secured.

The small-diameter portion 2 has a groove 6 at the tip and a slope 5 on the long diameter L side of the front side surface.
The tip has a major axis L of 3 mm to 5 mm and a minor axis S of 1 mm to 3 mm.

The diameter D1 of the liquid outlet 9 in the vicinity of the thin part 4 is set to 2 mm to 5 mm so as to secure the flow rate of the liquid flowing from the liquid flow path 8 of the large diameter part 3. The ratio R1 (R1 = D2 / D1) between the diameters D2 and D1 is the diameter D
If the value of 2 is larger, the closer to 1, the more the flow rate of the liquid can be secured. R1 is preferably from 1 to 1.3. R
If 1 is greater than 1.3, it is not possible to ensure a sufficient flow rate of the liquid by utilizing the large diameter of the diameter D2, and if R1 is less than 1, it becomes difficult to integrally form the small diameter portion 2 via the thin portion 4. Because.

In use, the thin portion 4 is broken by finger pressure to open the liquid outlet 9, and the liquid flows from the medical bag side through the liquid flow path 8, the liquid outlet 9, and the outer periphery of the small diameter portion 2 to the liquid. Discharge to the transfer tube side. The flow rate of the liquid can be sufficiently secured from the liquid flow path 8 and the liquid outlet 9 of the large-diameter portion 3, and the liquid can be quickly discharged along the slope 5.

The break angle θ of the thin portion 4 is set to 50 ° as shown in FIG. 4 (a partially enlarged view in the circle indicated by the arrow A in FIG. 1). Thereby, the broken section (opening section) of the thin portion 4 can be made substantially flat, and the liquid can be discharged smoothly.

FIG. 5 is a schematic view of the communication member 11 of the present invention.
FIG. 6 is a view taken in the direction of the arrow C in FIG. 5, and FIG. 7 is a view taken in the direction of the arrow D in FIG.
FIG. 7 is a sectional view taken along line AA of FIG. 6. The communication member 11 has a wing portion 17 formed on the outer periphery of the small diameter portion 12 as compared with the communication member 1, and has a diameter D4 (2 mm) of the liquid flow path 18 of the large diameter portion 13.
3 mm) and the diameter D3 (1.9 mm to 2.2 mm) of the liquid outlet 19 in the vicinity of the thin portion 14 are formed to be small, and the breaking angle θ of the thin portion 14 is shown in FIG. 9 (arrow B in FIG. 5). (Partial enlarged view in the circle of FIG. 2) is different from that of the communication member 1 in that it is formed at 60 °. Is the ratio R2 (R2 = D4 / D3) between the diameters D3 and D4 also 1?
1.3.

The communication member 11 has a wing portion 1 on the outer periphery of the small diameter portion 12.
7 and the slope 15 on the long diameter L side of the front side surface thereof improves the flow of the liquid. That is, the liquid that has broken the thin portion 14 and has flowed out of the fluid flow path 18 of the large diameter portion 13 to the outer periphery of the small diameter portion 12 through the liquid outlet 19 quickly passes through the blade portion 17 and the slope 15 to the liquid transfer tube side. Can be discharged.

[0014]

[Function and effect of the present invention] As described above, the communicating piece of the present invention can be folded with a uniform force regardless of the cutting direction. Cutting can be performed smoothly without applying excessive force. A sufficient flow rate of the liquid can be secured, and the liquid can be discharged quickly.

[Brief description of the drawings]

FIG. 1 is a schematic view of a communication piece of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a view taken in the direction of arrow B in FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a schematic view of the communication piece of the present invention.

FIG. 6 is a view taken in the direction of arrow C in FIG. 5;

FIG. 7 is a view taken in the direction of arrow D in FIG. 6;

FIG. 8 is a sectional view taken along line AA of FIG. 6;

9 is a partially enlarged view of FIG. 5;

FIG. 10 is a schematic view of a conventional communication piece.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,11 Communication member 2,12 Small diameter part 3,13 Large diameter part 4,14 Thin part 5,15 Slope 6,16 Groove part 17 Wing part 8,18 Liquid flow path 9,19 Liquid outlet

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61J 1/10 335

Claims (2)

(57) [Scope of request for utility model registration] 1. A small-diameter portion 2 and a large-diameter portion 3 are integrally formed with a thin portion 4 interposed therebetween.
A liquid flow path 8 having a diameter of 0 mm is formed, a groove 6 is formed at the tip of the small-diameter portion 2, and a slope 5 is formed on the long diameter L side of the front side surface. Is formed to have a diameter D1 of 2 to 5 mm.
The ratio R1 = D2 / D1 of 1 was formed from 1 to 1.3.
A communication member 1 characterized by the following. 2. A small-diameter portion 12 and a large-diameter portion 13 are integrally formed via a thin-walled portion 14, and a diameter D4 is formed inside the large-diameter portion 13.
Is formed at 2 mm to 3 mm, a groove 16 is formed at the tip of the small-diameter portion 12, a slope 15 is formed at the long diameter L side of the front side surface, and a wing portion 17 is formed at the outer periphery. The diameter D3 of the liquid outlet 19 near the thin portion 14 is formed to be 1.9 mm to 2.2 mm, and the ratio R2 = D4 / D3 of the diameter D4 to the diameter D3 is set to 1 to 1.
3. A communication member 11 formed in No. 3.