WO2016152016A1

WO2016152016A1 - Male connector and infusion set

Info

Publication number: WO2016152016A1
Application number: PCT/JP2016/000882
Authority: WO
Inventors: 泰央上田
Original assignee: テルモ株式会社
Priority date: 2015-03-26
Filing date: 2016-02-18
Publication date: 2016-09-29
Also published as: JPWO2016152016A1; JP6709777B2

Abstract

This male connector and infusion set are provided with: a housing that has a distal-end cylindrical part, which can be inserted into a female connector, and that internally demarcates a flow path that includes a distal-end flow path that is demarcated by the distal-end cylindrical part; and a valve body that can block and unblock the distal-end flow path. The valve body is provided with an elastically deformable deforming part and with a plug part that can move between a blocking position in which elastic deformation of the deforming part causes the distal-end flow path to be blocked and an unblocking position in which the distal-end flow path is unblocked. The housing demarcates a housing space that houses the deforming part, and the housing space and the flow path are partitioned by the plug part when the plug part is in the blocking position and in the unblocking position.

Description

Male connector and infusion set

The present invention relates to a male connector and an infusion set.

When performing infusions to patients, it is necessary to form a route (infusion line) for transporting medicinal solutions. An infusion line is generally formed by connecting an infusion tube, various medical devices, and the like. In addition, when injecting a drug solution to be administered to a patient into a drug solution bag, it is necessary to connect the drug solution bag to a syringe or the like. Thus, a male connector and a female connector are used to detachably connect different members.

By the way, in the chemical solution, for example, there is a chemical solution containing a drug designated as a powerful drug such as an anticancer drug, and a medical worker can remove such a dangerous chemical solution when attaching / detaching a male connector or a female connector. It is necessary to pay sufficient attention so that the liquid does not adhere to the finger or the like.

Patent Document 1 discloses a distal valve that is disposed at a distal end of a housing and includes an internal valve seat disposed in a tubular male portion that engages a female connector (female connector), and a proximal end of the housing. A proximal valve disposed and a rigid drive movably disposed within the housing to move toward the proximal end of the housing to open both the distal and proximal valves An elastic member incorporated in the housing and positioned to bias the drive toward the distal end of the housing to close both the distal and proximal valves; Male connector (male connector), which is a self-sealing male connector that traps liquid remaining inside and prevents it from leaking outside when it is removed from a state connected to a female connector. Called male closed connector or closed male connector And also.) It is disclosed.

JP 2008-522736 A

However, when priming is performed by attaching the male connector of Patent Document 1 to the distal end of the infusion line, bubbles remain in the space inside the bellows-shaped elastic member to be elastically deformed, and infusion is performed to the patient after priming. In some cases, the remaining bubbles may be carried into the patient's body through the flow path.

Therefore, an object of the present invention is to provide a closed male connector and an infusion set capable of suppressing air bubbles from entering the flow channel after priming.

A male connector as a first aspect of the present invention has a distal end cylindrical portion that can be inserted into a female connector, and internally includes a flow path including a distal end flow path defined by the distal end cylindrical portion. And a valve body capable of closing and opening the distal end flow path, the valve body having a deformable portion that can be elastically deformed, and the distal end flow path by elastic deformation of the deformable portion. A plug portion movable between a closed position for closing and an open position for opening the distal end flow path, wherein the housing defines a storage space for storing the deformation portion, and the storage The space and the flow path are partitioned by the plug portion when the plug portion is in the closed position and in the open position.

As one embodiment of the present invention, it is preferable that the plug portion is movable between the closed position and the open position in a state where the flow path and the accommodation space are partitioned.

As one embodiment of the present invention, the housing includes the distal end tubular portion formed on one end side, the proximal end tubular portion formed on the other end side and connectable to a medical device, and the distal end. A body connecting the end tube portion and the proximal end tube portion, and the flow channel includes the distal end flow channel, the proximal end flow channel defined by the proximal end tube portion, and the A body channel that defines a body part that connects the distal end channel and the proximal end channel, and the fluid flows from the proximal end channel to the body. It is preferable that the liquid-tight structure is constituted by a space that flows only through the partial flow path to the distal end flow path.

As one embodiment of the present invention, the trunk portion is located between an inner cylinder portion that divides the housing space inside and a radially outer side of the inner cylinder portion, and between the inner cylinder portion. An opening that communicates with the trunk flow path at the distal end of the inner cylindrical section, and the plug portion is connected to the trunk flow path through the opening. It is preferable that the seal portion is formed between the outer wall of the plug portion and the inner wall of the inner cylinder portion.

As one embodiment of the present invention, the seal portion is constituted by an annular protrusion formed on the outer wall of the plug portion, or a seal member interposed between the plug portion and the inner cylinder portion. Is preferred.

As one embodiment of the present invention, it is preferable that the housing space communicates with the outside of the housing.

As one embodiment of the present invention, the plug portion includes a main body portion located in the housing, and is connected to the main body portion and located outside the housing, and the distal end tubular portion is disposed in the female connector. It is preferable to include an engaging portion that engages with the female connector when inserted and moves the main body portion within the housing.

The infusion set as the second aspect of the present invention includes the male connector.

According to the present invention, it is possible to provide a closed male connector and an infusion set capable of suppressing air bubbles from entering the flow channel after priming.

It is a perspective view which shows the male connector as one Embodiment of this invention, and the female connector which can be connected to this male connector. 2A is a view of the male connector shown in FIG. 1 viewed from the side, and FIG. 2B is a view of the male connector shown in FIG. 1 viewed from the distal end side. 3 (a) is a sectional view taken along the line II in FIG. 2 (b), and FIG. 3 (b) is the same sectional view as FIG. 3 (a), with the female connector shown in FIG. It is a figure which shows the male connector in the same state. 4A is a perspective view of the male connector shown in FIG. 1 in which the housing body member and the plug are extracted, and FIG. 4B is a cross-sectional view taken along the line II-II in FIG. 4 (c) is a sectional view taken along line III-III in FIG. 4 (a). It is IV-IV sectional drawing of Fig.4 (a). It is a perspective view which shows the single-piece | unit of a proximal end side connection member. It is a perspective view which shows the single-piece | unit of a nail | claw member. It is a perspective view which shows the single body of a cover member. It is a cross-sectional perspective view which shows the VV cross section of FIG. FIG. 10 is a diagram showing a state in which a male connector and a female connector are connected in the same sectional view as FIG. 9. It is a cross-sectional perspective view which shows the VI-VI cross section of FIG. It is a figure which shows the state by which the male connector and the female connector were connected in the same cross sectional view as FIG. It is sectional drawing which shows the modification of a distal end cylinder part. It is a figure which shows the infusion set as one Embodiment of this invention.

Hereinafter, embodiments of the male connector and the infusion set according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure.

First, an embodiment of a male connector according to the present invention will be described. FIG. 1 is a perspective view showing a closed male connector 1 as an embodiment of a male connector according to the present invention and a female connector 100 connectable to the male connector 1. Moreover, Fig.2 (a) is the figure which looked at the male connector 1 from the side surface side, FIG.2 (b) is the figure which looked at the male connector 1 from the front end side (left side in Fig.2 (a)). 3A is a longitudinal sectional view showing the male connector 1 in a state where the female connector 100 is not connected, and is a sectional view taken along the line II in FIG. 2B. FIG. 3B is a view showing the male connector 1 in the same cross-sectional view as FIG. 3A and in the same state as the state where the female connector 100 is connected. In FIG. 1, for convenience of explanation, only a part of the female connector 100 is shown. Hereinafter, in the male connector 1, one end side that is the downstream side of the liquid flow path of the chemical solution or the like in the infusion line is the “distal end” side, and the other end side that is the upstream side of the liquid flow path in the infusion line is “close” It is described as the “end” side.

As shown in FIGS. 1 to 3, the male connector 1 according to this embodiment includes a housing 2, a valve body 3 located in the housing 2, a claw member 4 fixed to the housing 2, and a housing 2. And a cover member 5 attached to be movable.

Hereinafter, further details of each member of the male connector 1 of the present embodiment and a characteristic portion constituted by each member will be described.

[Housing 2]
As shown in FIG. 3, the housing 2 defines a flow path 6 inside. More specifically, the housing 2 of the present embodiment includes a distal end tubular portion 7 that can be inserted into the female connector 100, a proximal end tubular portion 8 that can be connected to a medical device such as a medical tube, and a distal end. A body 9 that connects the end cylinder 7 and the proximal end cylinder 8, and the flow path 6 is configured by the distal end cylinder 7, the proximal end cylinder 8, and the hollow portion that the body 9 defines. Has been. The housing 2 of the present embodiment is configured by a housing main body member 2a that constitutes the distal end cylinder part 7 and the body part 9, and a proximal end side connection member 2b that constitutes the proximal end cylinder part 8. ing.

The distal end cylinder portion 7 is inserted into the insertion port 101 of the female connector 100, and the distal end capable of fluid-tightly communicating the flow path 6 in the male connector 1 and the flow path 102 in the female connector 100. It is a cylindrical connection part on the end side. Further, the proximal end cylinder portion 8 is fitted into the medical tube from the distal end side of the medical tube, for example, and fixed to the medical tube, and the flow path 6 and the medical tube in the male connector 1 are fixed. This is a cylindrical connection portion on the proximal end side capable of fluid-tight communication with the inner hollow portion.

The barrel portion 9 has a cylindrical outer shape and is a portion that connects the distal end cylindrical portion 7 and the proximal end cylindrical portion 8. In other words, the distal end cylinder part 7 projects from one end of the body part 9 and the proximal end cylinder part 8 projects from the other end. Here, in this embodiment, the distal end cylinder part 7, the proximal end cylinder part 8 and the trunk part 9 are arranged so that the central axes substantially coincide (in FIG. O ”).

In addition, the body portion 9 of the present embodiment includes a distal end side body portion 10 continuous with the distal end cylinder portion 7, a proximal end side body portion 11 continuous with the proximal end cylinder portion 8, and a distal end And an intermediate body 12 that connects the side body 10 and the proximal end side body 11.

The flow path 6 of the housing 2 according to the present embodiment includes a distal end flow path 6a defined by a distal end cylindrical part 7 formed on one end side of the housing 2 and a housing 2 in which the distal end cylindrical part 7 is formed. A barrel connecting the proximal end flow path 6b defined by the proximal end cylindrical portion 8 formed on the other end side opposite to the first end side of the first end side, and the distal end flow path 6a and the proximal end flow path 6b. And a body channel 6c defined by the section 9. And the flow path 6 of this embodiment is comprised liquid-tightly by the space where a liquid flows only from the proximal end flow path 6b to the distal end flow path 6a via the trunk | drum flow path 6c.

In addition, the trunk | drum channel | path 6c is divided into the hollow part 13 which the distal end side trunk | drum 10 divides, the hollow part 14 which the proximal end side trunk | drum 11 divides, and the intermediate trunk | drum 12, and the distal end The first branch flow channel 15 and the second branch flow channel 16 are two hollow portions that connect the hollow portion 13 defined by the side body portion 10 and the hollow portion 14 defined by the proximal end side body portion 11. ing.

Therefore, from the proximal end side, the proximal end flow path 6b, the hollow part 14 defined by the proximal end side body part 11, the first branch flow path 15 (or the second branch flow path 16), the distal end side body The hollow portion 13 defined by the portion 10 and the distal end flow channel 6a are arranged in this order, and these hollow portions communicate with each other to form the flow channel 6.

Here, FIG. 4A is a perspective view in which the housing main body member 2a of the housing 2 and the plug body constituting the plug portion 31 of the valve body 3 described later are extracted from the male connector 1 and drawn. . 4B is a cross-sectional view taken along the line II-II in FIG. 4A, and FIG. 4C is a cross-sectional view taken along the line III-III in FIG. FIG. 5 is a cross-sectional view taken along the line IV-IV in FIG.

As shown in FIGS. 3 to 5, the intermediate body portion 12 is positioned concentrically on the outer side in the radial direction of the inner cylinder portion 17 and an inner cylinder portion 17 that divides an accommodation space S to be described later. An outer cylinder part 18 that divides the first branch flow path 15 and the second branch flow path 16 described above with the part 17, and a connection part 19 that connects the inner cylinder part 17 and the outer cylinder part 18. ing. As described above, the central axis of the trunk portion 9 that is the central axis of the inner cylindrical portion 17 and the outer cylindrical portion 18 substantially coincides with the central axis of the distal end cylindrical portion 7 and the proximal end cylindrical portion 8. (Refer to “center axis O” in FIG. 2).

As shown in FIGS. 4 and 5, the inner cylinder portion 17 is supported by the outer cylinder portion 18 via a connecting portion 19. Specifically, the inner cylinder part 17 and the outer cylinder part 18 are located between the outer wall of the inner cylinder part 17 and the inner wall of the outer cylinder part 18 and are integrally formed with the inner cylinder part 17 and the outer cylinder part 18. It is continuous via the connecting part 19. Further, as shown in FIG. 5, the connecting portion 19 also functions as a partition that separates the first branch channel 15 and the second branch channel 16 in the circumferential direction C of the inner cylinder portion 17 and the outer cylinder portion 18. is doing. Further, as shown in FIG. 4, a notch 20 as an opening penetrating from the inner wall of the inner cylinder portion 17 to the outer wall of the outer cylinder portion 18 is formed on the proximal end side of the connecting portion 19. That is, in FIG. 3, the accommodation space S partitioned inside the inner cylinder portion 17 communicates with the outside of the housing 2, that is, the outside of the male connector 1 through the notch 20. As shown in FIG. 4, the arm portion 36 as the engaging portion in the plug portion 31 of the valve body 3 is assembled to the housing 2 so as to protrude outward of the housing 2 through the notch 20.

Of the inner cylinder part 17 and the outer cylinder part 18, the proximal end side portion where the notch 20 is formed is a first branch cylinder part 21 and a second branch cylinder part 22 which are two different cylinder parts. The first branch cylinder part 21 and the second branch cylinder part 22 are opposed to each other with the accommodation space S and the notch 20 interposed therebetween (see FIG. 4).

Here, as shown in FIGS. 3 and 4, the distal end of the inner tube portion 17 of the present embodiment leads to a hollow portion 13 defined by the distal end side body portion 10 of the body channel 6 c. An opening is formed, and the plug body as the plug section 31 of the valve body 3 is in a state of entering the inner cylinder section 17 through this opening. That is, in this embodiment, the plug portion 31 of the valve body 3 to be described later is disposed across the trunk channel 6 c and the inner cylinder portion 17 through an opening formed at the distal end of the inner cylinder portion 17. Yes.

As shown in FIGS. 3 and 4, the proximal end of the inner cylinder portion 17 of the present embodiment has an opening leading to the hollow portion 14 defined by the proximal end side body portion 11 of the body portion flow path 6 c. Is formed, and a bellows cylinder as a deformed portion 30 of the valve body 3 to be described later is inserted into the inner cylinder portion 17 through this opening, and the bottom plate portion 34 of the bellows cylinder is It is sandwiched between the proximal end of the cylindrical portion 17 and the proximal end side connecting member 2b.

As shown in FIG. 3, the outer cylindrical portion 18 of the intermediate body portion 12 has a distal end side and a proximal end side with respect to the inner cylindrical portion 17 in the central axis direction A (direction parallel to the central axis O). The distal end side barrel portion 10 and the proximal end side barrel portion 11 described above are configured by the outer cylinder portion 18. As shown in FIGS. 3 and 4, the substantially cylindrical distal end cylindrical portion 7 is configured such that the inner diameter and the outer diameter are substantially constant regardless of the position in the central axis direction A. On the other hand, the inner diameter and outer diameter of the outer cylinder portion 18 (the same as the inner diameter and outer diameter of the distal end body portion 10 in this embodiment) are the distal end cylinder portion 7 in the cross-sectional view of FIG. The inner diameter and the outer diameter of the distal end cylindrical portion 7 are larger than the inner diameter and the outer diameter of the distal end cylinder portion 7 in a sectional view of FIG. A distal end portion 38 of the plug portion 31 of the valve body 3 to be described later has a substantially cylindrical shape, and the outer diameter thereof is substantially equal to the inner diameter of the distal end cylindrical portion 7. Therefore, in a state in which the tip portion 38 is fitted in the distal end cylindrical portion 7, the distal end flow path 6 a is closed, and the tip portion 38 is not positioned in the distal end cylindrical portion 7, so In a state of being located (in the distal end side body portion 10 in this embodiment), the distal end flow path 6a is opened. Details will be described later (see FIG. 3 and the like).

Further, as shown in FIGS. 4A and 4C, the outer wall of the distal end cylinder part 7 and the outer wall of the outer cylinder part 18 are continuous via a step surface 23 as an abutting part. ing. The stepped surface 23 abuts against the cap 103 (see FIG. 1) of the female connector 100 when the distal end cylindrical portion 7 of the male connector 1 is inserted into the insertion port 101 of the female connector 100, and has a predetermined depth or more. Restrict insertion.

Furthermore, as shown in FIG. 3, a long groove 24 extending in the circumferential direction C of the outer cylinder portion 18 is formed on the outer wall of the outer cylinder portion 18 of the housing 2 of the present embodiment. Two long grooves 24 of the present embodiment are provided at positions facing each other in a cross section of the outer cylinder portion 18 (a cross section orthogonal to the central axis direction A), and a bottom plate portion 50 of the claw member 4 to be described later is provided in the long groove 24. The inner edge of is fitted. Therefore, the claw member 4 is restricted from moving in the central axis direction A with respect to the housing 2.

Further, as described above, the housing 2 of the present embodiment is composed of the housing main body member 2a and the proximal end side connecting member 2b, and the proximal end portion of the housing main body member 2a (in the present embodiment, near On the distal end side body portion 11),

flange portions

25 a and 25 b supported by the proximal end side connecting member 2 b are provided so as to protrude outward in the radial direction of the outer cylinder portion 18. Like the first branch cylinder part 21 and the second branch cylinder part 22, the

flange parts

25 a and 25 b are also divided into two parts by the notch 20 described above, and are formed integrally with the first branch cylinder part 21. The first flange portion 25a and the second flange portion 25b formed integrally with the second branch tube portion 22 are configured.

As shown in FIGS. 1 to 3, the proximal end side connecting member 2 b is provided on a substantially cylindrical tubular body 26 constituting the proximal end tubular portion 8 and on one end side of the tubular body 26. The proximal end side connection member 2b is connected to the proximal end side surfaces of the first flange portion 25a and the second flange portion 25b described above by, for example, ultrasonic bonding or the like. By being attached, it is supported by the housing body member 2a.

FIG. 6 is a perspective view showing a single unit of the proximal end side connecting member 2b. As shown in FIG. 6, the surface on the distal end side of the flange portion 27 is provided between the first branch cylinder portion 21 and the second branch cylinder portion 22, and between the first flange portion 25 a and the second flange portion 25 b. The opposing distance between the first branch cylinder part 21 and the second branch cylinder part 22 and the opposing distance between the first flange part 25a and the second flange part 25b are set to a predetermined distance. A projection 28 is formed as a position holding portion for holding. Two protrusions 28 are provided at positions facing each other across the proximal end flow path 6b. The protrusion 28 is also a positioning portion for aligning the circumferential direction positions of the housing main body member 2a and the proximal end side connecting member 2b when the proximal end side connecting member 2b is attached to the housing main body member 2a. is there.

Further, as shown in FIG. 6, the proximal end body 11 described above and the later-described inner end portion, which is the edge portion of the proximal end flow path 6 b, of the surface on the distal end side of the flange portion 27. A branch portion 29 that splits the liquid flowing from the proximal end flow path 6b into the first branch flow path 15 and the second branch flow path 16 is formed together with the bottom plate portion 34 in the deformable portion 30 of the valve body 3. . The branch portion 29 is constituted by two projecting pieces that project toward the distal end side from a position facing each other across the proximal end flow path 6b among the distal end side surfaces of the flange portion 27. . In the circumferential direction of the proximal end cylinder part 8 (the same direction as the circumferential direction of the distal end cylinder part 7 and the body part 9 and the same direction as the circumferential direction C of the outer cylinder part 18 (see FIGS. 3 and 5)), There are two gaps between the two protruding pieces. And since the baseplate part 34 in the deformation | transformation part 30 of the valve body 3 is mounted in the distal end surface of these two protrusion pieces, each two clearance gaps formed between two protrusion pieces are each a distal end. The side bottom plate 34, the proximal end side flange portion 27, and the protruding pieces on both sides in the circumferential direction are surrounded by the protruding pieces on the both sides in the circumferential direction. It flows into the hollow part 14 defined by the end-side body part 11 and flows into the first branch flow path 15 and the second branch flow path 16.

The two gaps between the two protruding pieces are formed at positions facing each other across the proximal end flow path 6b, and the positions of the gaps in the circumferential direction of the proximal end cylindrical portion 8 are the first It corresponds to the position of the branch flow path 15 and the second branch flow path 16. Accordingly, each gap in the present embodiment is formed at a position where the central angle is deviated by about 90 degrees from the position where the projection 28 is formed in the circumferential direction of the proximal end cylinder portion 8.

Examples of the material of the housing main body member 2a and the proximal end side connecting member 2b constituting the housing 2 include polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer; ethylene-vinyl acetate copolymer (EVA); Polyvinylidene chloride; Polystyrene; Polyamide; Polyimide; Polyamideimide; Polycarbonate; Poly- (4-methylpentene-1); Ionomer; Acrylic resin; Polymethylmethacrylate; Acrylonitrile-butadiene-styrene copolymer (ABS resin) Acrylonitrile-styrene copolymer (AS resin); butadiene-styrene copolymer; polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexane terephthalate (PCT) Polyether; Polyetherketone (PEK); Polyetheretherketone (PEEK); Polyetherimide; Polyacetal (POM); Polyphenylene oxide; Modified polyphenylene oxide; Polysulfone; Polyethersulfone; Polyphenylenesulfide; Various resin materials such as aromatic polyester (liquid crystal polymer); polytetrafluoroethylene, polyvinylidene fluoride, and other fluororesins. Also, a blend or a polymer alloy containing one or more of these may be used. In addition, various glass materials, ceramic materials, and metal materials may be used.

[Valve 3]
As shown in FIGS. 3A and 3B, the valve body 3 is positioned relative to the housing 2 so that the distal end flow path 6 a defined by the distal end cylindrical portion 7 can be closed and opened. It is attached. Specifically, the valve body 3 includes a deformable portion 30 that can be elastically deformed in the central axis direction A, and a closed position and a distant position where the distal end flow path 6a is blocked by elastic deformation of the deformable portion 30 in the central axis direction A. And a plug portion 31 movable between an open position for opening the distal end flow path 6a.

As shown in FIG. 3, the deformable portion 30 of the present embodiment is configured by a bellows cylinder. The bellows tube body as the deformable portion 30 is a ceiling formed integrally with the bellows tube portion 32 so as to close the bellows tube portion 32 and the hollow portion in the bellows tube portion 32 at one end side of the bellows tube portion 32. A plate portion 33 and a bottom plate portion 34 formed integrally with the bellows tube portion 32 so as to close the hollow portion at the other end side of the bellows tube portion 32 are provided.

When the bellows tube portion 32 is compressed in the central axis direction A, the bellows tube portion 32 can be easily elastically deformed in the central axis direction A while the bellows is folded and compressed and deformed. And the top plate part 33 has closed the hollow part in the one end side of the bellows cylinder part 32, and in this embodiment, the bellows cylinder part 32 and the top plate part 33 partition the inner cylinder part 17 of the housing 2. Is accommodated in the accommodating space S.

The bottom plate part 34 has an outer edge part 34 a extending radially outward from the outer wall of the bellows cylinder part 32, and the outer edge part 34 a is connected to the proximal end of the inner cylinder part 17 in the housing 2 and a protruding piece (branch). It is clamped and compressed by the distal end of part 29). Thus, the bellows cylinder as the deformable portion 30 is fixed in the position of the bottom plate portion 34 in the housing 2, and the bellows tube portion 32 and the top plate portion 33 move in the central axis direction A with respect to the bottom plate portion 34. be able to.

As shown in FIGS. 3 and 4, the plug portion 31 of the present embodiment is configured by a plug body. The plug body as the plug portion 31 is configured to be movable between a closed position where the distal end flow channel 6a is closed by elastic deformation of the deformable portion 30 and an open position where the distal end flow channel 6a is opened. .

Specifically, the plug body of the present embodiment is located in the housing 2 and is located outside the housing 2 by being connected to the main body 35 and a rod-shaped main body 35 that is movable in the distal end flow path 6a. And an arm portion 36 as an engaging portion that engages with the female connector 100 when the distal end cylindrical portion 7 is inserted into the female connector 100 and moves the main body portion 35 within the housing 2. Yes.

The main body 35 has a substantially cylindrical outer shape, and the main body 35 protrudes radially outward from the outer wall thereof, and an annular protrusion 37 that contacts the inner peripheral surface of the inner cylindrical portion 17 of the housing 2. A distal end portion 38 that enters the distal end flow path 6a in the distal end cylindrical portion 7 of the housing 2 and can close the distal end flow path 6a is provided.

As shown in FIGS. 3 and 4, the main body portion 35 of the plug body as the plug portion 31 passes through the opening communicating with the trunk channel 6 c formed at the distal end of the inner cylinder portion 17. It is disposed across the trunk portion flow path 6c and the inner cylinder portion 17 that partitions the accommodation space S. And as shown to Fig.3 (a) and FIG.3 (b), the flow path 6 and the accommodation space S have the state in which the plug body as the plug part 31 exists in the obstruction | occlusion position (refer Fig.3 (a)), and In both states of the open position (see FIG. 3B), the plug body 31 is partitioned by the main body portion 35 of the plug body. For this reason, it is difficult for a liquid such as a chemical liquid to enter the storage space S from the flow path 6, and the liquid is prevented from directly touching the deformable portion 30 located in the storage space S. Therefore, it can suppress that the deformation | transformation part 30 is contaminated by adhesion of liquids, such as a chemical | medical solution. Further, since air is prevented from entering the flow path 6 from the storage space S, air enters the flow path 6 from the storage space S during priming or infusion, and bubbles are formed in the patient body together with a liquid such as a drug solution. The risk of being carried can be reduced.

The state in which the plug portion is in the closed position for closing the distal end flow path may be a state in which the distal end flow path is closed by the plug portion. In this embodiment, the distal end portion of the main body portion 35 is used. 38 is fitted into the distal end flow path 6a, and the distal end portion 38 is in close contact with the inner peripheral surface of the distal end cylindrical portion 7, thereby meaning that the distal end flow path 6a is closed (see FIG. 3 (a)). Further, the state in which the plug portion is in the open position for opening the distal end flow path may be a state in which the distal end flow path is not blocked by the plug portion. In this embodiment, the tip of the main body portion 35 is used. The portion 38 is not located in the distal end flow channel 6a but is located only in the trunk flow channel 6c, and the distal end flow channel 6a and the hollow portion 13 of the distal end side barrel 10 are directly connected. (Refer to FIG. 3B).

Further, in the present embodiment, the space connecting the accommodation space S and the flow path 6 is blocked by the plug, and is separated so that the accommodation space S and the flow path 6 do not communicate with each other. Specifically, as shown in FIG. 3, in the present embodiment, the annular protrusion 37 in the main body portion 35 of the plug body is located in the inner cylinder portion 17, and the annular protrusion 37 is arranged around the inner cylinder portion 17. In the entire direction (the same direction as the circumferential direction C of the outer cylinder portion 18), the inner circumferential surface of the inner cylinder portion 17 is abutted and the inner circumferential surface of the inner cylinder portion 17 is pressed and brought into close contact. That is, the main body part 35 and the inner cylinder part 17 are fitted by the annular protrusion part 37 so as to be in close contact with each other. Therefore, the annular protrusion 37 constitutes a seal portion formed between the outer wall of the main body portion 35 of the plug body as the plug portion 31 and the inner wall of the inner cylinder portion 17. However, the configuration of the seal portion is not limited to the annular protrusion 37 of the present embodiment. For example, an elastic member such as an O-ring is provided between the outer peripheral surface of the main body portion 35 and the inner peripheral surface of the inner cylinder portion 17. It is also possible to configure the seal portion with a seal member separate from the plug portion 31 and the inner cylinder portion 17, which is interposed between the plug portion 31 and the inner cylinder portion 17.

Further, as shown in FIG. 3, the base end portion (proximal end side end portion) of the main body portion 35 is in contact with the top plate portion 33 of the bellows cylinder as the deformable portion 30. Therefore, the bellows cylinder 32 is compressed and elastically deformed when the main body 35 moves to the proximal end side (see FIG. 3B). In other words, the plug body as the plug section 31 can move in the central axis direction A following the elastic deformation of the bellows cylinder as the deformation section 30.

As shown in FIG. 3, the distal end portion 38 of the main body portion 35 is formed to have an outer diameter larger than that of the cylindrical portion continuous with the distal end portion 38, and the outer wall of the distal end portion 38 and the outer wall of the cylindrical portion are formed. Is continued by an annular lower surface 38a (the lower surface in FIG. 3) of the tip portion 38. Further, the outer diameter of the tip portion 38 is larger than the inner diameter of the inner cylinder portion 17. Therefore, when the plug body as the plug portion 31 is moved from the closed position to the open position, the annular lower surface 38a of the tip portion 38 abuts against the distal end of the inner cylinder portion 17 (see FIG. 3B). And in the state which the lower surface 38a contact | abutted and contacted the distal end of the inner cylinder part 17, a plug body will be located in an open position.

On the contrary, when the plug body as the plug section 31 moves from the open position to the closed position by the restoring force of the bellows cylinder body as the deformation section 30, the plug body falls off from the distal end cylinder section 7 to the outside. It is preferable to form an abutting portion on the housing 2 so as not to be present. For example, as shown in FIG. 13, it is possible to form a protrusion 60 as an abutting portion that protrudes toward the distal end flow path 6 a on the inner wall of the distal end cylindrical portion 7.

The arm portion 36 as the engaging portion extends substantially in parallel with the main body portion 35, and a tip end of the arm portion 36 abuts the female connector 100 when connected to the female connector 100, and the main body portion 35 and the rod-like portion. A connecting portion 36b for connecting 36a. As shown in FIG. 4, the plug body as the plug portion 31 of the present embodiment has two arm portions 36 at positions facing each other with the main body portion 35 interposed therebetween.

The connecting portion 36b is projected from the outer wall of the main body portion 35 toward the radially outer side at the base end portion of the main body portion 35. As shown in FIGS. 4A and 4B, the connecting portion 36 b protrudes outward of the housing 2 through the notch 20 of the housing 2. The rod-shaped portion 36a is formed continuously from the end portion of the connecting portion 36b, and extends from the end portion of the connecting portion 36b toward the distal end side.

When the male connector 1 is connected to the female connector 100, the tip (distal end) of the rod-shaped part 36a is disposed so as to abut against the top surface of the cap 103 (see FIG. 1) of the female connector 100. That is, when the male connector 1 is connected to the female connector 100, the tip of the rod-shaped portion 36a engages with the female connector 100, and the main body portion 35 connected to the rod-shaped portion 36a via the connecting portion 36b is the housing 2. By moving inside, the plug body 31 as the plug portion 31 can be moved between the closed position and the open position. Note that when the plug body as the plug portion 31 moves between the closed position and the open position, the connecting portion 36 b moves in the notch 20 of the housing 2.

Here, although the valve body 3 of this embodiment is comprised with the bellows cylinder as the deformation | transformation part 30, and the plug body as the plug part 31, the deformation | transformation part 30 and the plug part 31 are comprised with two members. For example, the deformable portion 30 and the plug portion 31 can be configured by a combination of three or more members.

The bellows cylinder as the deformable portion 30 of the present embodiment is molded and formed to be elastically deformable. Examples of the material of the bellows cylinder include natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, and fluorine. Various rubber materials such as rubber, various thermoplastics such as styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluororubber, chlorinated polyethylene An elastomer may be mentioned, and one or a mixture of two or more of these may be used.

Further, as the material of the plug body as the plug portion 31 of this embodiment, the same material as that of the housing 2 described above can be used.

[Claw member 4]
FIG. 7 is a perspective view showing the claw member 4 alone. As shown in FIG. 7, the claw member 4 extends in the thickness direction of the bottom plate portion 50 from a flat bottom plate portion 50 that divides a substantially circular opening at the center, and from an outer edge facing the bottom plate portion 50. And two curved plate-like

side plate portions

51a and 51b.

As shown in FIG. 3, the housing 2 is disposed so as to penetrate the opening of the bottom plate portion 50, and the inner edge portion of the bottom plate portion 50 that defines the opening is formed on the outer peripheral surface of the outer cylinder portion 18 of the housing 2. The long groove 24 is fitted. Therefore, the claw member 4 is restricted from moving with respect to the housing 2 in the central axis direction A.

Steps formed on the holder 107 of the female connector 100 are provided at the front end portions of the

side plate portions

51a and 51b so that the male connector 1 is not removed from the female connector 100 when the male connector 1 and the female connector 100 are connected.

Claw portions

39a and 39b that are hooked on 106 (see FIG. 1) are formed.

In addition, as the nail | claw member 4 of this embodiment, the material similar to the above-mentioned housing 2 can be used.

[Cover member 5]
FIG. 8 is a perspective view showing a single cover member 5. As shown in FIG. 8, the cover member 5 includes a bottom plate portion 40 that defines a substantially circular opening at the center, and a cylindrical cover tube portion 41 that is formed integrally with the outer edge of the bottom plate portion 40. It has. As shown in FIG. 3, the housing 2 is disposed so as to penetrate the opening of the bottom plate portion 40. Further, the cover tube portion 41 is located on the radially outer side (the left side and the right side in the cross-sectional view of FIG. 3) with respect to the housing 2 and the

side plate portions

51a and 51b, and around the housing 2 and the

side plate portions

51a and 51b. Surrounding. Further, the inner wall of the cover tube portion 41 is arranged in contact with the outer walls of the

side plate portions

51 a and 51 b of the claw member 4.

The cover member 5 can move in the central axis direction A while the inner edge of the bottom plate portion 40, that is, the inner surface defining the opening slides with the outer wall of the outer cylinder portion 18 of the housing 2. As the cover tube portion 41 moves in the central axis direction A of the bottom plate portion 40, the inner surface thereof moves in the central axis direction A while sliding with the outer walls of the

side plate portions

51 a and 51 b of the claw member 4.

Here, the cover cylinder part 41 of the cover member 5 includes a first position where the inner wall of the cover cylinder part 41 is located radially outside the

claw parts

39 a and 39 b of the claw member 4, and the cover cylinder part 41. The inner wall is configured to be movable in the central axis direction A between a second position that is not located radially outward with respect to the

claw portions

39a and 39b. The inner wall of the cover cylinder part 41 in the first position is in contact with the outer walls of the

side plate parts

51a and 51b at a position radially outside the

claw parts

39a and 39b. On the other hand, the inner wall of the cover cylinder part 41 in the second position is not in contact with the outer walls of the

side plate parts

51a and 51b at a position radially outside the

claw parts

39a and 39b.

That is, in the state where the cover tube portion 41 is in the second position, the tip portions of the

side plate portions

51a and 51b where the

claw portions

39a and 39b are formed are easily elastically deformed so as to expand radially outward. On the other hand, in the state where the cover tube portion 41 is in the first position, compared to the state where the cover tube portion 41 is in the second position, it is difficult for the tip portions of the

side plate portions

51a and 51b to elastically deform so as to expand radially outward. . Accordingly, the medical worker elastically deforms so that the facing distance between the

side plate portions

51a and 51b is increased by connecting and disconnecting the male connector 1 and the female connector 100 with the cover tube portion 41 as the second position. Thus, both can be easily connected and disconnected. Moreover, when maintaining the connection state of the male connector 1 and the female connector 100, the unintentional or careless connection cancellation | release can be suppressed by making the cover cylinder part 41 into a 1st position.

In addition, as the cover member 5 of this embodiment, the material similar to the above-mentioned housing 2 can be used.

[Containment space S]
The accommodation space S of the present embodiment is partitioned by the housing 2 and the valve body 3 so as not to communicate with the flow path 6. Specifically, the housing space S is surrounded by the inner cylinder portion 17 of the housing 2, the plug body as the plug portion 31 of the valve body 3, and the bellows cylinder body as the deformation portion 30 of the valve body 3.

As described above, an opening leading to the hollow portion 13 of the distal end side body portion 10 is formed at the distal end of the inner cylinder portion 17, and the proximal end side body portion 11 is formed at the proximal end of the inner cylinder portion 17. The opening on the distal end side of the inner cylinder portion 17 is partitioned and closed by a plug body as the plug portion 31, and the proximal end side of the inner cylinder portion 17 is formed. Is closed by a bottom plate portion 34 of the bellows cylinder as the deformable portion 30. Therefore, as shown in FIG. 3, the accommodation space S in which the bellows tube portion 32 and the top plate portion 33 of the bellows tube body are located does not communicate with the flow path 6.

Further, as described above, the main body portion 35 of the plug body as the plug portion 31 is disposed across the flow path 6 and the inner cylinder portion 17 so as not to communicate the flow path 6 and the accommodation space S. More specifically, the distal end flow path 6a is closed while the outer peripheral surface of the main body portion 35 and the inner peripheral surface of the inner cylinder portion 17 are in close contact with each other to form a seal portion. It can move between a position to be opened (see FIG. 3A) and a position to be opened (see FIG. 3B). Therefore, for example, even if the distal end flow path 6a is opened for priming and the distal end flow path 6a is closed again after priming, the flow path 6 in the male connector 1 remains in the housing space S during this operation. Since it does not communicate, it can suppress that air enters the flow path 6 from the accommodation space S and bubbles are generated in the liquid. Therefore, the risk of air bubbles being carried into the patient's body during infusion after priming can be reduced.

In addition, as described above, the accommodation space S of the present embodiment communicates with the outside of the housing 2, that is, the outside of the male connector 1 through the notch 20 formed as an opening formed in the housing 2. Therefore, the bellows tube portion 32 of the bellows tube body is compressed and deformed in the housing space S by being pushed into the plug body as the plug portion 31 (see FIG. 3B), and the volume of the housing space S is reduced. However, the air in the accommodation space S is positively discharged to the outside of the housing 2 through the notch 20. Therefore, it is possible to further suppress the air in the accommodation space S from entering the flow path 6 through between the main body portion 35 and the inner cylindrical portion 17 of the plug body.

In the present embodiment, the bellows cylinder as the deformable portion 30 defines a sealed internal space.For example, an opening is formed in the bellows cylinder portion 32, and the air in the bellows cylinder portion 32 is You may make it discharge | emit outside through the notch 20. FIG. With such a configuration, the deformable portion 30 can be more easily compressed and deformed than the configuration in which no opening is formed in the bellows tube portion 32, and the male connector 1 and the female connector 100 are connected. Operability can be improved.

In addition, the accommodation space S of the present embodiment includes an opening on the distal end side and an opening on the proximal end side of the inner cylindrical portion 17 of the housing 2, a main body portion 35 of the plug body, and a bottom plate portion 34 of the bellows cylindrical body. However, the present invention is not limited to this configuration. For example, the bottom plate portion that closes the hollow portion of the inner cylinder portion on the proximal end side is formed integrally with the inner cylinder portion. The housing space may be formed by the inner cylinder portion and the plug body.

Further, in the present embodiment, the bellows cylinder as the deforming portion 30 is adopted, but any bellows cylinder that can be elastically deformed in the central axis direction A within the accommodation space S not communicating with the flow path 6 may be used. It is not limited to the body. Therefore, for example, another elastic member such as a coil spring can be used.

[Connection between male connector 1 and female connector 100]
Next, the connection between the male connector 1 and the female connector 100 (see FIG. 1) will be described with reference to FIGS. 9 is a cross-sectional perspective view showing the VV cross section of FIG. 1, and FIG. 10 is a view showing a state where the male connector 1 and the female connector 100 are connected in the same cross-sectional view as FIG. 11 is a cross-sectional perspective view showing a VI-VI cross section of FIG. 1, and FIG. 12 is a view showing a state where the male connector 1 and the female connector 100 are connected in the same cross-sectional view as FIG. is there. 9 and 10 (VV cross section in FIG. 1) is centered on the central axis O (see FIG. 3 etc.) from the cross section shown in FIG. 11 and FIG. 12 (VI-VI cross section in FIG. 1). A cross section at a position where the central angle is shifted by 90 degrees is shown.

As shown in FIGS. 9 and 11, in a single state where the male connector 1 is not connected to the female connector 100, a plug portion 31 is provided in the distal end flow path 6 a of the distal end tubular portion 7 of the housing 2. The main body 35 of the plug body enters and closes the distal end flow path 6a. That is, in the state shown in FIGS. 9 and 11, the plug body as the plug portion 31 is in the closed position where the distal end flow path 6 a is closed. In this state, the substantially cylindrical tip portion 38 of the main body portion 35 is fitted into the distal end cylinder portion 7, and the outer peripheral surface of the tip portion 38 is in the entire circumferential direction with the inner peripheral surface of the distal end cylinder portion 7. It is in the state which contact | abutted over. Therefore, the distal end flow channel 6 a is closed, and even if a liquid such as a chemical solution is present in the flow channel 6, the liquid does not leak out from the distal end cylindrical portion 7.

When the male connector 1 and the female connector 100 are brought closer to the central axis direction A from the state shown in FIGS. 9 and 11, first, the tip of the rod-like portion 36 a in the arm portion 36 of the male connector 1 It contacts the top surface of cap 103 (the right surface in FIGS. 9 and 11).

When the male connector 1 and the female connector 100 are further brought closer to the central axis direction A, the rod-like portion 36a is pushed by the cap 103 and moves to the proximal end side with respect to the housing 2. Further, the main body portion 35 connected to the rod-like portion 36a via the connecting portion 36b also moves in the distal end tubular portion 7 toward the proximal end side as the rod-like portion 36a moves. Further, as the plug portion 31 moves, the distal end cylinder portion 7 of the housing 2 is inserted into the insertion port 101 of the female connector 100 through the slit 105 of the elastic valve body 104.

10 and 12 show a state after the tip portion 38 of the main body portion 35 has moved from the distal end flow channel 6a into the trunk flow channel 6c. That is, in the state shown in FIG.10 and FIG.12, the plug body as the plug part 31 exists in the open position which open | released the distal end flow path 6a. In the state shown in FIGS. 10 and 12, the distal end flow path 6 a of the distal end cylindrical portion 7 inserted into the insertion port 101 is in fluid-tight communication with the flow path 102 in the female connector 100. It has become.

Therefore, in the state where the male connector 1 and the female connector 100 shown in FIGS. 10 and 12 are connected, the distal end flow path 6a is not blocked by the plug portion 31, and thus flows into the proximal end tubular portion 8. A liquid such as a chemical solution is used for the proximal end channel 6b, the hollow portion 14 (see FIG. 3), the first branch channel 15 (or the second branch channel 16) (see FIG. 3), and the hollow portion 13 (see FIG. 3). ), It passes through the flow path 6 in the male connector 1 in the order of the distal end flow path 6a, and flows into the flow path 102 of the female connector 100 (see the arrow in FIG. 10).

The connection between the male connector 1 and the female connector 100 is completed when the

claw portions

39a and 39b of the claw member 4 are caught by the step portion 106 (see FIGS. 1 and 9) of the female connector 100. That is, the state shown in FIGS. 10 and 12 shows a state in which the

claw portions

39a and 39b are hooked on the step portion 106 and the connection between the male connector 1 and the female connector 100 is completed.

The male connector 1 of the present embodiment includes

claw portions

39a and 39b that engage with the stepped portion 106 (see FIGS. 1 and 9) of the female connector 100, and the

claw portions

39a and 39b allow the male connector 1 to Although the connection state with the female connector 100 is more reliably maintained, the fixing member that fixes the connection between the male connector and the female connector is not limited to this configuration. For example, the fixing member may be a male member. Instead of the claw member 4 and the cover member 5 of the connector 1, the male connector is provided with a cylindrical portion in which a female screw portion that is screwed with the male screw portion of the female connector is provided. Also good.

[Infusion set 70]
Finally, the infusion set 70 provided with the male connector 1 is demonstrated as embodiment of this invention. FIG. 14 is a view showing an infusion set 70. In addition, since the detail of the male connector 1 was mentioned above, description is abbreviate | omitted here.

The infusion set 70 constitutes an infusion line that connects from an infusion holder such as an infusion bag (not shown in FIG. 14) to an indwelling needle (not shown in FIG. 14). Specifically, the infusion set 70 includes a medical tube 71, a bottle needle 72 that can puncture the infusion holder, a drip tube 73 that can visually check the flow rate of a liquid such as a chemical solution supplied from the infusion holder, Adjustment clamp 74 that can change the flow rate of the liquid in the medical tube 71 into a plurality of states, a closing clamp 75 that closes the medical tube 71, and a male connector connected to the distal end of the medical tube 71 1 is provided.

The distal end of the medical tube 71 is fixed to the proximal end cylinder portion 8 by adhesion or the like while being inserted into the proximal end cylinder portion 8 of the male connector 1. 1 is liquid-tightly connected. That is, the male connector 1 constitutes a distal end portion of an infusion line constituted by the infusion set 70.

When infusion is performed using such an infusion set 70, the bottle needle 72 is punctured into the infusion holder before administration, and the plug portion 31 of the male connector 1 is opened using a dedicated cap member or the like before administration. Priming is performed by moving to. Then, after priming, the cap member is removed from the male connector 1, and the plug portion 31 is returned to the closed position again. Next, for example, the male connector 1 is connected to the female connector 100 (see FIGS. 1 and 9 to 12) attached to the proximal end portion of the indwelling needle placed in the body, so that the plug portion 31. Moves to the open position, so that a liquid such as a medicinal solution in the infusion holder can be supplied into the patient's body via the flow path 6 in the male connector 1 and the flow path 102 in the female connector 100. .

Further, for example, when the male connector 1 and the female connector 100 are detached after the administration is completed, the plug portion 31 of the male connector 1 returns to the closed position by the restoring force of the deformable portion 30 in conjunction with the removal operation. And it can suppress that the liquid in the male connector 1 leaks outward from the distal end cylinder part 7, and can reduce the risk that a medical worker will touch liquids, such as a chemical | medical solution.

In addition, although the infusion set 70 of this embodiment is comprised by the structural member mentioned above, it is not restricted to this structure, For example, the infusion set containing another structural member, such as a connector, may be sufficient, An infusion set that does not include a part of the constituent members described above may be used.

The male connector and the infusion set according to the present invention can be realized by various specific configurations, and are not limited to the configurations shown in the above-described embodiments, but are the gist of the invention described in the claims. Various modifications are possible without departing from the scope of the present invention.

As used herein, “communication” means not only that the spaces are adjacent and directly connected but also that they are connected via another space. Therefore, for example, the distal end channel 6a of the male connector 1 described above is connected to the proximal end channel 6b via the trunk channel 6c, and the distal end channel 6a is connected to the proximal end channel 6b. Communicated with.

The present invention relates to a male connector and an infusion set.

1: Male connector 2: Housing 2a: Housing body member 2b: Proximal end side connection member 3: Valve body 4: Claw member 5: Cover member 6: Channel 6a: Distal end channel 6b: Proximal end channel 6c: trunk channel 7: distal end cylinder part 8: proximal end cylinder part 9: trunk part 10: distal end side trunk part 11: proximal end side trunk part 12: intermediate trunk part 13: distal end Hollow part 14 defined by the side body part: Hollow part 15 defined by the proximal end side body part 15: First branch channel 16: Second branch channel 17: Inner cylinder part 18: Outer cylinder part 19: Connection part 20 : Notch 21: first branch tube portion 22: second branch tube portion 23: step surface 24: long groove 25a: first flange portion 25b: second flange portion 26: tube main body 27: flange portion 28: protrusion 29: Branch part 30: Deformation part 31: Plug part 32: Bellows cylinder part 33: Top plate part 34: Bottom plate part 34a: Outer edge part 35: Body part 36: Arm part (engagement part)
36a: rod-shaped part 36b: connecting part 37: annular projection (seal part)
38: tip portion 38a: annular

lower surface

39a, 39b: claw portion 40: bottom plate portion 41: cover tube portion 50:

bottom plate portion

51a, 51b: side plate portion 60: protrusion (butting portion)
70: Infusion set 71: Medical tube 72: Bottle needle 73: Infusion tube 74: Adjustment clamp 75: Closure clamp 100: Female connector 101: Insertion port 102: Channel 103: Cap 104: Elastic valve body 105: Slit 106: Stepped portion 107: Holder A: Center axis direction C: Circumferential direction of the outer cylinder S: Housing space O: Center axis

Claims

A housing having a distal end tubular portion that can be inserted into the female connector, and defining a flow path including a distal end flow path defined by the distal end tubular portion;
A valve body capable of closing and opening the distal end flow path,
The valve body is movable between a deformable portion that can be elastically deformed, a closed position that closes the distal end flow path by an elastic deformation of the deformable portion, and an open position that opens the distal end flow path. A stopper part,
The housing defines an accommodating space for accommodating the deformable portion;
The male connector, wherein the housing space and the flow path are partitioned by the plug portion when the plug portion is in the closed position and in the open position.
The male connector according to claim 1, wherein the plug portion is movable between the closed position and the open position in a state where the flow path and the accommodation space are partitioned.
The housing includes the distal end tube portion formed on one end side, a proximal end tube portion formed on the other end side and connectable to a medical device, the distal end tube portion, and the proximal end tube. A body part connecting the parts,
The flow path connects the distal end flow path, a proximal end flow path defined by the proximal end tubular portion, the distal end flow path and the proximal end flow path, And a torso channel to divide,
The said flow path is comprised liquid-tightly by the space where a liquid flows only from the said proximal end flow path through the said trunk | drum flow path to the said distal end flow path, The said flow path is characterized by the above-mentioned. The male connector as described in.
The barrel portion includes an inner cylinder portion that divides the housing space therein, and an outer cylinder portion that is positioned radially outward of the inner cylinder portion and divides the trunk channel between the inner cylinder portion and the inner cylinder portion. With
An opening leading to the trunk channel is formed at the distal end of the inner cylinder part,
The plug is disposed across the trunk channel and the inner cylinder through the opening, and a seal is formed between the outer wall of the plug and the inner wall of the inner cylinder. The male connector according to claim 3, wherein:
The said seal | sticker part is comprised by the annular projection part formed in the outer wall of the said stopper part, or the sealing member interposed between the said stopper part and the said inner cylinder part, It is characterized by the above-mentioned. The described male connector.
The male connector according to any one of claims 1 to 5, wherein the housing space communicates with the outside of the housing.
The plug is connected to the female connector when the distal end cylinder is inserted into the female connector, and is connected to the main body and located outside the housing. The male connector according to claim 1, further comprising an engaging portion that moves the main body within the housing.
An infusion set comprising the male connector according to any one of claims 1 to 7.