Connector and bag

Abstract

To provide a connector and a bag capable of reducing liquid residual between the connector and a tube.SOLUTION: A connector 200 includes a connection part 220 to which a tube is connected, and the connection part 220 has an inner peripheral surface S10 and a tip end surface S20. The inner peripheral surface S10 is connected to the tip end surface S20, and includes an enlarged diameter surface S12 whose diameter gradually becomes larger toward the tip end surface S20.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a connector and a bag. [Background technology]

[0002] For example, JP2014-507959A discloses a bioreactor bag including a flexible bag body and a cell suspension diffuser connected to the bag body. The cell suspension diffuser includes a tube connector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2014-507959 Summary of the Invention [Problem to be solved by the invention]

[0004] In a bag such as that described in JP2014-507959A, it is desirable to reduce the amount of liquid remaining between the inner surface of the tube and the connector.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a connector and a bag capable of reducing residual liquid between the connector and the tube. [Means for solving the problem]

[0006] A connector according to one aspect of the present invention is a connector including a connection portion to which a tube is connected, the connection portion having an inner circumferential surface and a tip surface, the inner circumferential surface including an expanding surface connected to the tip surface and which gradually expands in diameter as it approaches the tip surface.

[0007] A bag according to one aspect of the present invention comprises the connector and a bag body capable of containing a liquid, the connector including a base portion connected to a base end of the connection portion, and the base portion fixed to the bag body. Effect of the Invention

[0008] According to the present invention, it is possible to provide a connector and a bag that are capable of reducing the amount of liquid remaining between the connector and the tube. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a plan view of a bag in one embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] 4 is a cross-sectional view of the tip portion of the connector. [Figure 4] 4 is a cross-sectional view showing the relationship between the tip of the connector and a tube. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the accompanying drawings, in which the same or corresponding components are designated by the same reference numerals.

[0011] 1 is a plan view of a bag according to an embodiment of the present invention. The bag 1 is preferably used as a culture bag for storing a culture medium, for example. The bag 1 includes a bag body 100 and a connector 200.

[0012] The bag body 100 is formed in a bag shape capable of containing liquid such as culture medium, etc. The bag body 100 is made of synthetic resin or the like.

[0013] The connector 200 is connected to the bag body 100 by welding or the like. As shown in FIG.

[0014] The base portion 210 is connected to the bag body 100. The base portion 210 is formed in a disk shape.

[0015] The connecting portion 220 is a portion to which the tube 10 (see FIG. 1) is connected. The connecting portion 220 stands upright from the base portion 210. The connecting portion 220 is perpendicular to the base portion 210. As shown in FIGS. 2 and 3, the connecting portion 220 has a cylindrical portion 222 and a locking portion 224.

[0016] The cylindrical portion 222 is formed in a cylindrical shape and stands from the base portion 210. The cylindrical portion 222 has an inner circumferential surface S10 and a tip surface S20.

[0017] As shown in Fig. 2 and Fig. 3, the inner peripheral surface S10 has a reference surface S11 and an expanded diameter surface S12. The inner diameter d11 (see Fig. 3) of the reference surface S11 is formed constant. The expanded diameter surface S12 is connected to the tip of the reference surface S11. The expanded diameter surface S12 gradually expands in diameter as it moves away from the reference surface S11 in a direction parallel to the axial direction of the cylindrical portion 222 (the vertical direction in Fig. 3). In the cross section shown in Fig. 3, the expanded diameter surface S12 may be formed in a straight line, or may be formed in a curved shape so as to gradually move away from the central axis of the cylindrical portion 222 as it moves away from the reference surface S11. The boundary between the reference surface S11 and the expanded diameter surface S12 is formed in a curved shape.

[0018] The tip surface S20 is formed at the tip of the cylindrical portion 222. The tip surface S20 may be curved so as to be convex in a direction away from the base portion 210 (upward in FIG. 3), or may be formed as a flat surface perpendicular to the central axis of the cylindrical portion 222. A boundary portion 223 (see FIG. 3) between the enlarged diameter surface S12 and the tip surface S20 is formed in a curved shape.

[0019] As shown in Fig. 3, the difference between the outer diameter D20 of the tip surface S20 and the inner diameter d20 of the tip surface S20 is preferably set to 30% to 80% of the difference between the outer diameter D20 of the tip surface S20 and the inner diameter d11 of the reference surface S11, and more preferably set to 40% to 60%. The difference between the outer diameter D20 and the inner diameter d20 may be set to about 0.8 mm.

[0020] The locking portion 224 is formed on the outer circumferential surface of the connection portion 220. The locking portion 224 locks the tube 10.

[0021] Fig. 4 is a cross-sectional view showing the vicinity of the tip surface S20 in a state in which the tube 10 is connected to the connection portion 220. In Fig. 4, the tip surface S120 of a conventional connector that does not have the enlarged diameter surface S12 is shown by a two-dot chain line.

[0022] 4, in the connector 200 of this embodiment, the inner circumferential surface S10 of the connection part 220 includes the expanding surface S12, and therefore the area of ​​the tip surface S20 of the connection part 220 is smaller than that of a conventional connector in which the inner diameter of the connection part is constant from the base end to the tip of the connection part. Therefore, less liquid remains between the inner circumferential surface of the tube 10 and the tip surface S20 after the liquid flows into the tube 10 connected to the connection part 220.

[0023] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0024] [Aspect 1] A connector including a connection portion to which a tube is connected, The connection portion is An inner circumferential surface; A tip surface, The inner circumferential surface includes an expanding surface that is connected to the tip surface and gradually expands in diameter as it approaches the tip surface.

[0025] In this connector, the inner circumferential surface of the connection part includes an expanded diameter surface, so the area of ​​the distal end surface of the connection part is smaller than when the inner diameter of the connection part is constant from the base end to the tip of the connection part, and therefore less liquid remains between the inner circumferential surface and the distal end surface of the tube after the liquid flows into the tube connected to the connection part.

[0026] [Aspect 2] 2. The connector of claim 1, wherein a boundary between the tip surface and the expanded diameter surface is formed into a curved shape.

[0027] [Aspect 3] A connector as described in aspect 1 or 2, wherein a difference between an outer diameter of the tip surface and an inner diameter of the tip surface is 30% or more and 80% or less of a difference between an outer diameter of the tip surface and an inner diameter of a base end of the expanded diameter surface.

[0028] [Aspect 4] A connector according to any one of aspects 1 to 3; A bag body capable of containing a liquid; the connector includes a base portion connected to a proximal end of the connection portion; The base portion is fixed to the bag body.

[0029] It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is indicated by the claims, not by the description of the embodiments above, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0030] 1 bag, 10 tube, 100 bag body, 200 connector, 210 base portion, 220 connection portion, 222 cylindrical portion, 224 locking portion, 223 boundary portion, S10 inner surface, S11 reference surface, S12 enlarged diameter surface, S20 tip surface.

Claims

1. A connector including a connection portion to which a tube is connected, The connection portion is An inner circumferential surface; A tip surface, The inner circumferential surface includes an expanding surface that is connected to the tip surface and gradually expands in diameter as it approaches the tip surface.

2. The connector according to claim 1 , wherein a boundary between said tip surface and said expanded diameter surface is formed into a curved shape.

3. 2. The connector according to claim 1, wherein a difference between an outer diameter of the tip surface and an inner diameter of the tip surface is 30% or more and 80% or less of a difference between an outer diameter of the tip surface and an inner diameter of a base end of the expanded diameter surface.

4. A connector according to any one of claims 1 to 3; A bag body capable of containing a liquid; the connector includes a base portion connected to a proximal end of the connection portion, The base portion is fixed to the bag body.

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