WO2015146142A1 - コネクタ及び輸液セット - Google Patents
コネクタ及び輸液セット Download PDFInfo
- Publication number
- WO2015146142A1 WO2015146142A1 PCT/JP2015/001643 JP2015001643W WO2015146142A1 WO 2015146142 A1 WO2015146142 A1 WO 2015146142A1 JP 2015001643 W JP2015001643 W JP 2015001643W WO 2015146142 A1 WO2015146142 A1 WO 2015146142A1
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- WO
- WIPO (PCT)
- Prior art keywords
- connector
- insertion direction
- male connector
- wall
- flow path
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1072—Tube connectors; Tube couplings with a septum present in the connector
Definitions
- the present invention relates to a connector and an infusion set, and more particularly to a connector to which a male connector can be connected and an infusion set using the connector.
- the liquid is sent into the body using a medical tube.
- a connector capable of liquid-tightly connecting a male connector such as a syringe or a luer taper member and a medical tube is used.
- a male connector such as a syringe or luer taper member may be referred to as a male luer
- a connector connected to the male luer may be referred to as a female luer.
- Patent Document 1 in a mixed injection port as a connector in which one end of a flow channel tube is closed with a septum in which a slit into which the tube member is inserted is inserted, the flow channel tube is injected from the inserted tube member.
- a co-infusion port is disclosed in which a circulating portion for guiding a fluid or a fluid flowing toward the pipe member side to the septum side is arranged and then led to the downstream side of the flow channel pipe or the tip portion of the pipe member.
- the mixed injection port disclosed in Patent Document 1 is configured to place a circulating portion, which is a separate member from the channel tube portion, inside the channel tube portion as a housing, the circulating portion is formed during the manufacturing process. There is a problem that a process of placing the inside of the channel pipe part is required, and it takes time to manufacture the mixed injection port.
- the present invention is to provide a connector and an infusion set that can suppress the internal liquid from staying continuously with a simple configuration.
- the connector according to the first aspect of the present invention includes an insertion portion into which a male connector is inserted from the outside, a housing that defines a flow path communicating with the insertion portion, and an elastic member that closes the insertion portion.
- a valve body, and an inner wall that partitions the flow path is opposed to a tip opening of the male connector inserted into the insertion portion in the insertion direction of the male connector, and collides with a liquid flowing out from the tip opening.
- the liquid collision surface is integrally formed.
- the housing includes a partition portion that partitions the flow path in a direction orthogonal to the insertion direction, and the liquid collision surface is a surface of the partition portion on the upstream side in the insertion direction.
- the liquid collision surface is a surface of the partition portion on the upstream side in the insertion direction.
- it is constituted by a certain upstream surface.
- the partition section partitions the flow path into a plurality of separated flow paths in a direction orthogonal to the insertion direction.
- the upstream surface is preferably a flat surface extending in a direction orthogonal to the insertion direction.
- the upstream surface is a slope that descends from the upstream side to the downstream side in the insertion direction.
- the partition portion has a substantially circular outer shape when viewed in the insertion direction.
- the housing includes a projecting wall portion projecting inward from the inner wall, and the liquid collision surface is a surface on the upstream side in the insertion direction of the projecting wall portion.
- the liquid collision surface is a surface on the upstream side in the insertion direction of the projecting wall portion.
- it is constituted by an upstream surface.
- the maximum width sandwiched between the flow paths of the partition portion is that of the housing defining an insertion opening that is one end of the insertion portion. It is preferably smaller than the inner diameter.
- a tip receiving surface that receives the tip of the male connector is integrally formed on the inner wall that defines the flow path, and the liquid collision surface is It is preferable that it is located downstream of the tip receiving surface.
- the infusion set as the second aspect of the present invention is characterized by including the connector.
- FIG. 2 is a sectional view taken along line II-II in FIG. It is a perspective view of the single body of an elastic valve body.
- 5A is a cross-sectional view taken along the line III-III in FIG. 5B is a cross-sectional view taken along the line IV-IV in FIG.
- It is a cross-sectional perspective view which shows the same cross section as the cross section of the connector shown in FIG.
- FIG. 1 is a perspective view showing a connector 1 according to this embodiment.
- 2 and 3 show a cross-sectional view taken along a line II and a cross-sectional line II-II in FIG. 1, respectively.
- the connector 1 includes a housing 2 and an elastic valve body 3 attached to the housing 2.
- the connector 1 includes a housing 2 that partitions the hollow portion 4 and an elastic valve element 3 that is positioned in the hollow portion 4.
- the hollow portion 4 includes an insertion portion 5 into which a male connector 100 (see FIG. 9 and the like) is inserted from the outside and a flow path 6 communicating with the insertion portion 5, and the elastic valve body 3 closes the insertion portion 5.
- the “flow path communicating with the insertion section” means not only a flow path directly connected to the insertion section but also a flow path connected to the insertion section through another space.
- the flow path 6 of the present embodiment is a flow path directly connected to the insertion portion 5.
- the housing 2 includes a cap 7 that defines the insertion portion 5 into which the male connector 100 (see FIG. 9 and the like) is inserted from the outside, and a holder 8 that partitions the flow path 6 and supports the cap 7. is there.
- the cap 7 has a top cap 9 and a bottom cap 10, and the elastic valve body 3 is compressed and sandwiched by the top cap 9 and the bottom cap 10 to be inside the hollow portion 4, specifically, the insertion portion 5. The position inside is fixed.
- the holder 8 is a member that partitions the flow path 6 and supports the top cap 9 and the bottom cap 10.
- both the top cap 9 and the bottom cap 10 are supported by being in contact with the holder 8, but the bottom cap 10 is held by the top cap 9 and only the top cap 9 is attached. It is good also as a structure made to contact the holder 8 and to be supported by the holder 8.
- FIG. Conversely, the top cap 9 may be held by the bottom cap 10 and only the bottom cap 10 may be brought into contact with the holder 8 and supported by the holder 8.
- the top cap 9 and the bottom cap 10 define the insertion portion 5. Further, the holder 8 partitions a part of the insertion portion 5 and the flow path 6.
- Examples of the material of the holder 8 constituting the housing 2 and the top cap 9 and the bottom cap 10 as the cap 7 include polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymer; ethylene-vinyl acetate copolymer (EVA); polyvinyl chloride; polyvinylidene chloride; polystyrene; polyamide; polyimide; polyamideimide; polycarbonate; poly- (4-methylpentene-1); ionomer; Polymer (ABS resin); Acrylonitrile-styrene copolymer (AS resin); Butadiene-styrene copolymer; Polyethylene terephthalate (PET), Polybutylene terephthalate (PBT), Polycyclohexa Polyester such as terephthalate (PCT); polyether; polyetherketone (PEK); polyetheretherketone (PEEK); polyetherimide; polyacetal (POM); polyphenylene oxide; modified polyphen
- the elastic valve body 3 has a slit 11 so that the male connector 100 (see FIG. 9 and the like) can be elastically deformed and opened and closed when the male connector 100 is attached to and detached from the connector 1. It arrange
- the elastic valve body 3 is molded and formed to be elastically deformable.
- the material of the elastic valve body 3 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, Various rubber materials such as fluoro rubber, various heat such as styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluoro rubber, chlorinated polyethylene, etc.
- a plastic elastomer may be mentioned, and one or a mixture of two or more of these may be used.
- the hardness of the elastic valve body 3 is preferably 20 to 60 ° (A hardness). Thereby, since an appropriate elastic force can be ensured in the elastic valve body 3, the elastic deformation described later can be caused in the elastic valve body 3.
- FIG. 4 is a perspective view of the elastic valve body 3 alone.
- 5A and 5B are sectional views taken along lines III-III and IV-IV in FIG.
- the elastic valve body 3 is a circular flat disk-shaped valve body having a disk-shaped outer shape, and the top surface 12 (the upper surface in FIGS. 5A and 5B) has a planar shape.
- the top surface center region 13 and the top surface outer region 14 located radially outside the top surface center region 13 are configured.
- the top surface center region 13 has a shape protruding outward (upward in FIG. 5) from the top surface outer region 14, and a single-letter-shaped slit 11 is formed at the center of the top surface center region 13. Yes.
- This slit 11 is formed by molding, and does not penetrate to the bottom surface 17 during molding, but penetrates to the bottom surface 17 when, for example, the first male connector 100 (see FIG. 9 or the like) is inserted after molding. It is configured to do.
- the top surface outer region 14 is formed with a top surface annular groove 15 so as to surround the top surface center region 13, and a locking projection 26 ( 2 and 3) enter the top annular groove 15 and compress the elastic valve body 3 to constitute a part of the clamping portion 32 (see FIGS. 2 and 3).
- the groove wall on the top surface center region 13 side is formed in an arc shape in the sectional view of FIG.
- the groove wall of 15 is also comprised, the position and shape of the top surface annular groove 15 can be appropriately changed according to the position and shape of the locking projection 26 of the top surface cap 9.
- the slit 11 is not formed in the bottom surface central region 18, as described above, for example, when the first male connector 100 is inserted, the distal end portion of the slit 11 formed on the top surface 12 and the bottom surface central region 18.
- the slit 11 is connected from the top surface central region 13 to the bottom surface central region 18.
- the thick wall region 19 protrudes outward (downward in FIGS. 5A and 5B) from the bottom center region 18 and the bottom external region 20.
- the thick portion region 19 is not provided, when the male valve 100 is inserted or removed, an excessive load is applied to the elastic valve body 3 or when the male connector 100 is repeatedly attached and detached, Although there exists a problem that the longitudinal direction edge part by the side of the bottom face 17 will tear, by providing the thick part area
- an annular thick portion region 19 is formed so as to surround the slit 11 formed on the top surface 12, and among them,
- the wall thickness at the position outside the longitudinal direction of the slit 11 is the thickest.
- a bottom annular groove 21 is formed in the bottom external region 20 so as to surround the thick portion region 19, and a locking projection 31 of the bottom cap 10 described later enters the bottom annular groove 21 to compress the elastic valve body 3.
- a part of the clamping part 32 is configured (see FIGS. 2 and 3).
- the outer edge of the top surface outer region 14 on the top surface 12 of the elastic valve body 3 and the outer edge of the bottom surface outer region 20 on the bottom surface 17 are elastic together with the top surface 12 and the bottom surface 17. They are connected by a substantially circumferential side surface 50 constituting the outer wall of the valve body.
- the top cap 9 includes a substantially cylindrical hollow tube portion 22 and a flange portion 23 provided on one end side of the hollow tube portion 22.
- a substantially circular insertion opening which is one end of the insertion portion 5 is defined on the upper surface (the upper surface in FIGS. 2 and 3) located on the other end side of the hollow cylinder portion 22.
- a thread 25 is formed on the outer peripheral surface of the hollow cylindrical portion 22 so that it can be screwed into a lock connector defined by ISO594.
- the flange portion 23 is a part molded integrally with the hollow cylinder portion 22, and has a configuration in which the top cap 9 is held by the holder 8 when the flange portion 23 engages with the holder 8 described later.
- the inner wall of the hollow cylindrical portion 22 protrudes in the vicinity of the edge portion 24 toward the insertion direction B of the male connector 100, and the top surface of the elastic valve body 3 described above.
- a locking projection 26 is provided for entering the groove 15 and compressing the elastic valve body 3.
- the inner wall 27 in the present embodiment has a cylindrical shape parallel to the insertion direction B.
- the inner wall 27 may have a tapered shape in which the inner diameter gradually decreases in the insertion direction B according to the outer shape of the male connector 100.
- the male connector 100 is fitted to the top cap 9 by the cylindrical inner wall 27 in a state in which the male connector 100 is inserted, but is not limited to this configuration. In the state where the male connector 100 is inserted, the male connector 100 can be configured to be in non-contact with the cylindrical inner wall 27.
- the edge portion 24 On the upper surface of the hollow cylindrical portion 22, there are the edge portion 24 described above and a planar extending portion 28 that surrounds the edge portion 24 and extends in a direction C orthogonal to the insertion direction B.
- the top surface center region 13 of the elastic valve body 3 In a state where the top surface center region 13 of the elastic valve body 3 is fitted in a space surrounded by the inner wall 27, that is, in a state where the male connector 100 is not inserted, the top surface center region 13 of the elastic valve body 3 is , And protrudes from the edge portion 24 and the extending portion 28 in the extraction direction D of the male connector 100 (the reverse direction of the insertion direction B).
- the center of the top surface can be used during the wiping operation for the purpose of disinfection that is usually performed immediately before the user inserts the male connector 100.
- the entire region 13 can be easily wiped off, and the elastic valve body 3 can be kept hygienic without leaving bacteria or foreign matter.
- the top surface center region 13 of the elastic valve body 3 is accommodated up to the position (height) of the edge 24, and the top surface center region 13 of the elastic valve body 3 You may comprise so that the extension part 28 of the top cap 9 may form the same plane.
- the bottom cap 10 is provided with a substantially cylindrical hollow cylinder portion 29 and a flange portion 30 provided on one end side of the hollow cylinder portion 29, as with the top cap 9.
- the other end side of the hollow cylindrical portion 29 protrudes in the removal direction D, enters the bottom annular groove 21 of the elastic valve body 3 and compresses the elastic valve body 3, and the locking protrusion 26 of the top cap 9.
- a locking projection 31 is provided for holding the elastic valve body 3.
- the elastic valve body 3 is compressed and clamped by the clamping portion 32 constituted by the locking projection 26 of the top cap 9 and the locking projection 31 of the bottom cap 10 described above. Specifically, the position in the insertion part 5 is fixed.
- the bottom cap 10 is held by the top cap 9 by being ultrasonically bonded to the inner surface of the hollow cylindrical portion 22 of the top cap 9 and / or the lower surface of the flange portion 23 (the lower surface in FIGS. 2 and 3). In addition, the position is fixed by further supporting the flange portion 30 of the bottom cap 10 by a holder 8 described later.
- the holder 8 supports the top cap 9 and the bottom cap 10, and defines the flow path 6 therein.
- the holder 8 according to the present embodiment supports both the top cap 9 and the bottom cap 10 by directly contacting them.
- the holder 8 does not contact the top cap 9 and only the bottom cap 10 is supported.
- the top cap 9 may be in direct contact with the bottom cap 10 and may be supported. That is, the holder 8 may be configured to be in direct contact with and supported by either the top cap 9 or the bottom cap 10 and not in direct contact with the other.
- the top cap 9 and the bottom cap 10 sandwich the elastic valve body 3 and hold the elastic valve body 3 in the insertion portion 5.
- the holder 8 in the present embodiment the elastic valve body 3 may be compressed and sandwiched between a holder in which the bottom cap 10 and the top cap 10 are integrated and a top cap as in the present embodiment.
- the housing of the connector is not limited to the three members of the holder, the top cap, and the bottom cap, and may be composed of two members of these members, for example. It is also possible to configure four or more members by adding another member to the member.
- the holder 8 of the present embodiment includes an outer cylindrical portion 34 having a thread 33 for a lock connector on the inner peripheral surface, and an inner wall of the outer cylindrical portion 34.
- a male luer part 35 as an inner cylinder part provided in a hollow part defined by the outer cylinder part 34 and an outer cylinder part 34 at an end of the outer cylinder part 34 and the male luer part 35 on the upstream side in the insertion direction B (downstream side in the removal direction D).
- a connecting part 36 that connects the male luer part 35.
- the inner wall of the male luer part 35 and the inner wall of the connecting part 36 define the flow path 6.
- the flow path 6 defined by the holder 8 of the present embodiment is inserted in the insertion direction B with the tubular flow path 37 defined by the inner wall of the male luer portion 35 having a tapered inner diameter that becomes smaller toward the downstream side in the insertion direction B.
- the connecting channel 38 is located between the portion 5 and the tubular channel 37 and connects the insertion unit 5 and the tubular channel 37 and is defined by a connecting part 36.
- the inner wall defining the flow path 6 among the inner walls of the housing 2 has a tip opening 104 (see FIG. 9 and the like) of the male connector 100 inserted into the insertion portion 5.
- a liquid collision surface 39 that faces in the insertion direction B and collides with the liquid flowing out from the tip opening 104 is integrally formed.
- the liquid collision surface 39 is integrally formed on the inner wall of the connecting portion 36 that divides the connecting channel 38 in the channel 6. That is, the liquid collision surface 39 itself is also a part of the inner wall that defines the flow path 6.
- the liquid collision surface 39 is formed on the member itself having an inner wall that defines the flow path 6.
- the liquid collision surface 39 of the present embodiment is provided in the partition portion 40 of the housing 2.
- the housing 2 of the present embodiment includes a partition 40 that partitions the flow path 6 in a direction C orthogonal to the insertion direction B, and the liquid collision surface 39 is a surface upstream of the insertion direction B in the partition 40. It is comprised by the upstream surface 41 (upper surface in FIG. 2, FIG. 3) which is.
- the holder 8 of the housing 2 in the present embodiment has a plurality of separated flow paths 38 (two separated flow paths in the present embodiment) in the direction C perpendicular to the insertion direction B.
- the liquid collision surface 39 is composed of an upstream surface 41 thereof.
- the holder 8 of the housing 2 in the present embodiment includes the partition portion 40 having the upstream surface 41 as the liquid collision surface 39 as described above, the distal end opening of the male connector 100 inserted into the insertion portion 4 of the connector 1.
- a liquid such as a chemical solution supplied from 104 (see FIG. 9 and the like) into the channel 6 of the connector 1 collides with the upstream surface 41 as the liquid collision surface 39 and causes turbulent flow in the channel 6. Therefore, it is possible to prevent liquid such as a chemical solution from staying in the hollow portion 4 of the connector 1 continuously.
- the detailed configuration of the partition 40 will be described later (see FIGS. 6 to 8).
- the inner wall of the housing 2 of the present embodiment that defines the flow path 6 has a tip that receives the tip 101 (see FIGS. 9 to 11) of the male connector 100.
- a receiving surface 42 is provided. The tip receiving surface 42 receives the tip 101 of the male connector 100 inserted from the outside through the slit 11 of the elastic valve body 3, so that the male connector 100 is inward of the connector 1 in the insertion direction B of the male connector. It suppresses being inserted excessively.
- the tip receiving surface 42 of the present embodiment is integrally formed on the inner wall of the holder 8 that defines the connection flow path 38.
- the tip receiving surface 42 of the present embodiment is configured to be positioned upstream of the upstream surface 41 in the insertion direction B. Therefore, in a state where the distal end portion 101 of the male connector 100 inserted into the insertion portion 5 is received by the distal end receiving surface 42, there is a gap between the distal end opening 104 of the male connector 100 and the upstream surface 41 of the partition portion 40. It is formed.
- tip receiving surface 42 of this embodiment is integrally formed continuously with the upstream surface 41 of the partition part 40 mentioned above, as shown in FIG. The details of the tip receiving surface 42 will be described later (see FIGS. 9 to 11).
- FIG. 6 is a cross-sectional perspective view showing the same cross section as that of the connector 1 shown in FIG. 7 is a cross-sectional perspective view showing the same cross section as that of the connector 1 shown in FIG.
- FIG. 8 is a top view of the holder 8 as seen in the insertion direction B.
- the circular two-dot chain line shown in FIG. 8 has shown the position of the edge part 24 of the top
- the partition 40 will be described in detail with reference to FIGS. 2, 3, and 6 to 8.
- FIG. 2 is a cross-sectional perspective view showing the same cross section as that of the connector 1 shown in FIG.
- FIG. 8 is a top view of the holder 8 as seen in the insertion direction B.
- the circular two-dot chain line shown in FIG. 8 has shown the position of the edge part 24 of the top
- the partition 40 will be described in detail with reference to FIGS
- the partitioning portion 40 constitutes the liquid collision surface 39 described above, and partitions the flow path 6 in a direction C orthogonal to the insertion direction B.
- the partition 40 of the present embodiment is spanned so as to connect the opposing inner walls in the direction C orthogonal to the insertion direction B, and the direction C orthogonal to the insertion direction B
- the flow path 6 is divided into two separated flow paths in a direction orthogonal to the facing direction of the opposed inner walls. More specifically, the partition portion 40 of the present embodiment partitions the connection flow path 38 of the flow path 6 into a first connection flow path 43 and a second connection flow path 44 that are separated from each other.
- the liquid flowing out from the tip opening 104 (see FIG. 9 and the like) of the male connector 100 inserted in the part 5 is branched by the partitioning part 40, passes through the first connection channel 43 and the second connection channel 44, They merge in the tubular channel 37.
- the partition portion 40 of the present embodiment is plate-shaped, and includes an upstream surface 41 as the liquid collision surface 39 and a downstream surface 45 that is a surface opposite to the upstream surface 41 (a surface on the downstream side in the insertion direction B). And a side surface 46 connecting the upstream surface 41 and the downstream surface 45.
- the upstream surface 41 and the downstream surface 45 are both flat surfaces extending in the direction C perpendicular to the insertion direction B. Therefore, in this embodiment, in a state where the male connector 100 is inserted into the insertion portion 5, the liquid flowing out from the tip opening 104 of the male connector 100 collides with the upstream surface 41 (liquid collision surface 39), and then has a planar shape. Flows in the direction C perpendicular to the insertion direction B. Therefore, the liquid flowing out from the tip opening 104 can easily reach the inner wall that divides the connecting flow path 38 and is located around the partition portion 40 in the direction C orthogonal to the insertion direction B. Thereby, since the flow of the liquid which follows the inner wall which divides the flow path 6 can be formed, the liquid which stays in the hollow part 4 continuously can be reduced further.
- the upstream surface 41 as the liquid collision surface 39 is provided at a position overlapping with the insertion opening defined by the inner wall of the housing 2, which is one end of the insertion portion 5 when the housing 2 is viewed in the insertion direction B. .
- the upstream surface 41 is provided at a position that overlaps with an insertion opening that is one end of the insertion portion 5 (an opening defined by the edge portion 24 indicated by a two-dot chain line in FIG. 8). Yes.
- the entire region of the upstream surface 41 is located inside the insertion opening that is one end of the insertion portion 5, and the upstream surface 41 is at least inserted.
- the upstream surface 41 of the present embodiment is located upstream of the tubular flow path 37 in the insertion direction B.
- the “when the housing 2 is viewed in the insertion direction B” as used herein means a case where an object is projected on a virtual plane when the housing 2 is viewed from the outside in the insertion direction B. It does not mean whether it can actually be seen. Therefore, in the relationship between the upstream surface 41 and the insertion opening described above, the upstream surface 41 and the inner wall of the housing 2 that defines the insertion opening (the edge in the present embodiment) on the virtual plane when the housing 2 is viewed in the insertion direction B. This means the case of projecting part 24).
- W1max is smaller than the inner diameter d of the housing 2 that defines the insertion opening that is one end of the insertion portion 5. More specifically, as shown in FIG. 2, the maximum width W1max of the partition portion 40 sandwiched between the first connection channel 43 and the second connection channel 44 is greater than the inner diameter d of the edge 24 of the top cap 9. Is also small.
- the maximum width W2max of the width W2 in the direction C perpendicular to the insertion direction B of the inner wall that defines the connection flow path 38 is the housing 2 that defines the insertion opening that is one end of the insertion portion 5. Is larger than the inner diameter d. That is, in the present embodiment, W1max ⁇ d ⁇ W2max is established. Therefore, according to the connector 1 of the present embodiment, the partition 40 provided in the housing 2 can cause a turbulent liquid flow and reduce the liquid continuously staying in the hollow portion 4.
- the flow path 6 The flow rate per unit time of the liquid flowing inside is not easily limited by the partition 40.
- the above-described maximum width W2max is located in the direction C perpendicular to the insertion direction B with respect to the partition portion 40, and in the same direction C, the flow path 6 (the first connection flow path 43 and the second connection flow in the present embodiment). It means the maximum width of the inner walls facing each other across the path 44) and the partition 40.
- the partition part 40 of this embodiment has a substantially circular outer shape when viewed in the insertion direction B as shown in FIG. That is, the upstream surface 41 and the downstream surface 45 of this embodiment are planes having the same outer diameter and a substantially circular outer shape.
- the side surface 46 is a curved surface that connects the outer edges of the upstream surface 41 and the downstream surface 45 and has an arc shape when viewed in the insertion direction B. Therefore, the above-described maximum width W1max of the present embodiment is the outer diameter of the partition portion 40 when viewed in the insertion direction B, that is, the outer diameter of the upstream surface 41 or the downstream surface 45.
- the partition portion 40 of the present embodiment is spanned so as to connect the inner walls facing each other in the direction C perpendicular to the insertion direction B, and is the inner wall facing the direction C perpendicular to the insertion direction B.
- the partition portion 40 of the present embodiment is bridged so as to connect the inner walls facing each other in the direction C orthogonal to the insertion direction B, but the position where the partition portion 40 is bridged is limited to this position. It is good also as a structure spanning so that the inner wall which does not oppose in the direction C orthogonal to the insertion direction B may be connected, for example.
- the number of the flow paths separated by the partitioning section is not limited to two, but may be a partitioning section that partitions the flow paths so as to form three or more flow paths separated from each other.
- the upstream surface 41 of the present embodiment is a plane extending in the direction C perpendicular to the insertion direction B, but may have a shape that facilitates the formation of a liquid flow along the inner wall that defines the flow path 6.
- the plane is not limited to such a plane. Therefore, for example, it may be a plane having a predetermined angle with respect to the direction C orthogonal to the insertion direction B, or may be a curved surface curved toward the insertion direction B or the removal direction D.
- the upstream surface 41 of the partition portion 40 is configured by a plane extending in the direction C orthogonal to the insertion direction B as in the present embodiment. With such a configuration, it is possible to easily form a liquid flow along the inner wall defining the flow path 6, and for example, after using the connector 1, the liquid such as a chemical liquid is allowed to flow upstream 41. It is because it can suppress staying on and stagnating.
- the downstream surface 45 of the partition part 40 of the present embodiment is a flat surface extending in the direction C orthogonal to the insertion direction B, and the side surface 46 is a curved surface having no inflection point. It is not limited to a simple shape. However, if each surface configuring the outer wall is configured by a flat surface or a curved surface having no inflection point, as in the partition portion 40 of the present embodiment, the groove wall and the groove bottom are within each surface. Since the portion where the liquid is liable to stay is not formed, such as a corner portion between them, it is possible to further suppress the liquid from staying on each surface.
- the partition portion 40 of the present embodiment is a circular flat plate having a substantially circular outer shape when viewed in the insertion direction B, but is limited to this shape.
- it may be a columnar shape such as a rectangular parallelepiped shape or a cubic shape having two straight lines parallel to each other when viewed in the insertion direction B as the outline of the outer edge.
- it can also be set as the partition part which combined several solid shape, for example, it extends in the radial direction from the side surface of this circular flat plate part and the circular flat plate part which has a liquid collision surface, and is circular.
- the partition portion with a plurality of rod-like portions that connect the inner wall of the flow channel positioned around the flat plate portion and the circular flat plate portion. Note that the maximum width W1max in the partition portion having such a configuration is the outer diameter of the circular flat plate portion.
- FIG. 13 is a view showing a partition portion 60 as a modification of the partition portion 40 of the present embodiment, and is an enlarged cross-sectional view of the partition portion 60 in the same cross section as FIG.
- the upstream surface 61 as the liquid collision surface 39 of the partition 60 shown in FIG. 13 expands from the top 62 on the removal direction D side toward the insertion direction B, and the slope 64 has an end on the insertion direction B side continuous with the side surface 63. It has the side shape of the cone comprised by these.
- the upstream surface 61 By making the upstream surface 61 into such a shape, compared with the upstream surface 41 of the partition part 40 of this embodiment, liquids, such as a chemical
- the downstream surface 65 of the partition 60 shown in FIG. 13 is formed by a slope 67 that extends from the apex 66 on the insertion direction B side in the extraction direction D, and an end on the extraction direction D side is continuous with the side surface 63. It has a side shape of a cone. By making the downstream surface 65 into such a shape, the liquid staying on the downstream surface 65 can be reduced as compared with the downstream surface 45 of the partition portion 40 of the present embodiment.
- the upstream surface 61 of the partition part 60 shown in FIG. 13 is integrally formed with the inner wall which partitions the connection flow path 38 as the flow path 6, like the upstream surface 41 of the partition part 40 of this embodiment.
- the upstream surface 61 is formed integrally with the tip receiving surface 42 that defines the connection flow path 38. More specifically, the upstream surface 61 is formed integrally with the tip receiving surface 42 via a step surface 68 that is formed continuously and integrally with the tip receiving surface 42.
- partition portion 60 shown in FIG. 13 is different in the shapes of the upstream surface 61 and the downstream surface 65 from the partition portion 40 of the present embodiment, but the other configurations are the same.
- FIG. 14 is a view showing a partition member 70 having a shape similar to the partition portion 60 shown in FIG. More specifically, FIG. 14 is an enlarged cross-sectional view of the connector 1000 to which the partition member 70 is attached, showing the partition member 70 in the same cross section as FIG.
- the partition member 70 shown in FIG. 14 is supported by the support portion 71 by being attached to a rib-like support portion 71 that is integrally formed on the inner wall that defines the connection flow path 3800 as the flow path 600. .
- a cutout portion 73 into which the support portion 71 enters is formed at a position where the side surface 72 faces (in the example shown in FIG. 14, a position facing in the direction perpendicular to the paper surface).
- the notch 73 extends from the upstream surface 74 to the downstream surface 75, and is continuous via the upstream notch 73a on the upstream surface 74 side, the upstream notch 73a and the step surface 76,
- the downstream cutout portion 73b is wider than the upstream cutout portion 73a in the direction C perpendicular to the insertion direction B.
- the support portion 71 has a shape corresponding to the cutout portion 73, and the end surface on the extraction direction D side constitutes a distal end receiving surface 77 that receives the distal end portion 101 (see FIG. 9 and the like) of the male connector 100.
- the first fitting portion 71a fitted in the side cutout portion 73a and the width in the direction C orthogonal to the insertion direction B are larger than the first fitting portion 71a and are fitted in the downstream cutout portion 73b. 2 fitting portions 71b.
- the step surface 78 between the outer surface of the first fitting portion 71a and the outer surface of the second fitting portion 71b abuts on the step surface 76 of the notch 73, and the attached partition member 70 is inserted in the insertion direction B. Restrict further movement. That is, the partition member 70 is positioned in the insertion direction B with respect to the support portion 71 when the step surface 76 of the partition member 70 abuts against the step surface 78 of the support portion 71.
- FIG. 15 is a diagram showing another modification of the liquid collision surface 39 of the present embodiment.
- FIG. 15 is a view showing the connector 1 including an extended wall portion 80 instead of the partition portion 40, and is an enlarged cross-sectional view of the extended wall portion 80 in the same cross section as FIG. 16 is a cross-sectional perspective view showing the same cross section as the cross section of the connector 1 shown in FIG.
- the overhanging wall portion 80 shown in FIGS. 15 and 16 is formed integrally with the inner wall that defines the flow path 6, and is inward of the surrounding inner wall located in the direction C perpendicular to the insertion direction B (in FIG. It projects toward the central axis O side of the path 37.
- the housing 2 includes a protruding wall portion 80 that protrudes inward from the surrounding inner wall located in the direction C orthogonal to the insertion direction B.
- the overhanging wall 80 includes an upstream surface 81 as the liquid collision surface 39, and a side surface 82 that is continuous with the edge of the upstream surface 81 on the flow channel 6 side and extends in the insertion direction B. And a downstream surface 83 constituted by a slope that is continuous with the end portion of the side surface 82 in the insertion direction B and expands radially outward of the flow path 6 as it proceeds in the insertion direction B.
- the upstream surface 81 as the liquid collision surface 39 of the overhanging wall portion 80 is a surface on the upstream side in the insertion direction B in the overhanging wall portion 80, that is, a surface on the removal direction D side of the overhanging wall portion 80, and orthogonal to the insertion direction B.
- 15 and 16 are formed integrally with a tip receiving surface 42 that receives the tip 101 (see FIG. 9 and the like) of the male connector 100 and a stepped surface 86.
- the tip receiving surface 42 is formed only in a part of the inner wall that defines the flow path 6 in the circumferential direction E around the central axis O. It protrudes inward of the flow path 6 from other parts in the circumferential direction E.
- the portion of the inner wall that divides the flow channel 6 that is adjacent to the tip receiving surface 42 in the circumferential direction E is located on the outer side in the radial direction of the flow channel 6 with respect to the tip receiving surface 42 through a step.
- a radial surface 87 As shown in FIGS. 15 and 16, the tip receiving surface 42 is provided at a position facing the channel 6 across the channel 6.
- the diameter-expanded surface 87 is disposed so as to face the channel 6 in the direction perpendicular to the opposing direction of the two tip receiving surfaces 42 in the direction C perpendicular to the insertion direction B. In other words, the diameter-expanded surface 87 is located between the two opposite tip receiving surfaces 42 in the circumferential direction E.
- the diameter-expanded surface 87 can be formed as a meat stealing portion, for example.
- the opposing diameter-expanded surfaces 87 have a curved taper shape in which the opposing distance in the direction C perpendicular to the insertion direction B gradually decreases in the insertion direction B.
- the end in the direction B is continuous with the inner wall that defines the tubular flow path 37.
- the rib-like projecting portion 85 extends in the opposing direction of the opposing enlarged diameter surface 87. Then, both ends in the extending direction of the rib-like projecting portion 85 are formed continuously and integrally with the diameter-enlarging surface 87.
- the flat surface portion 84 of the upstream surface 81 is continuous with the radially outer surface of the flow path 6 of the rib-shaped protrusion 85, the tip receiving surface 42, and the tip receiving surface 42.
- step difference surface 86 and the diameter-expanding surface 87 which oppose is comprised.
- the tip receiving surface 42 receives the tip 101 of the male connector 100 directly or indirectly, thereby positioning the male connector 100 in the insertion direction B. Is done. In a state where the male connector 100 is positioned by the tip receiving surface 42, a gap is formed between the male connector 100 and the enlarged diameter surface 87.
- the side surface 82 of the projecting wall portion 80 extends in the insertion direction B so as to be flush with the radially inner surface of the flow path 6 of the rib-like protruding portion 85.
- the liquid flowing from the tip 101 of the male connector 100 connected to the connector 1 collides with the upstream surface 81 as the liquid collision surface 39 to generate turbulent flow.
- the liquid flowing from the tip 101 of the male connector 100 connected to the connector 1 collides with the upstream surface 81 as the liquid collision surface 39 to generate turbulent flow.
- a flow is formed which flows in the circumferential direction E along the diameter-expanded surface 87 and flows over the rib-like protruding portion 85 of the overhanging wall portion 80 and flows into the tubular channel 37 in the insertion direction B. That is, since the flow along the inner wall that defines the hollow portion 4 of the connector 1 is formed, the liquid that stays in the hollow portion 4 can be reduced.
- the connector 1 shown in FIG. 15 and FIG. 16 includes a diameter-enlarging surface 87 provided radially outside the tip receiving surface 42 at a position adjacent to the tip receiving surface 42 in the circumferential direction E.
- the liquid can flow to a position on the radially outer side where the liquid tends to stay, and the stay of the liquid in the hollow portion 4 can be further suppressed.
- downstream surface 83 of the overhanging wall portion 80 shown in FIGS. 15 and 16 is an inclined surface that is inclined with respect to the insertion direction B, the downstream surface 83 is downstream as compared with the case where this is a plane orthogonal to the insertion direction B. It becomes difficult for the liquid to stay on the surface 83.
- the upstream surface 81 of the overhanging wall 80 shown in FIGS. 15 and 16 collides only with a part of the liquid flowing from the tip 101 of the male connector 100 inserted into the connector 1. That is, when the overhanging wall 80 is viewed in the insertion direction B, the area of the overhanging wall 80 is smaller than the area of the partition 60 shown in FIG. 13, and the male connector 100 inserted into the connector 1 has a smaller area. A part of the liquid flowing in from the front end portion 101 flows into the tubular flow path 37 without colliding with the upstream surface 81. Therefore, the overhanging wall portion 80 shown in FIGS.
- the 15 and 16 further secures the flow rate per unit time of the liquid flowing from the insertion portion 5 side to the tubular flow path 37 side as compared with the partition portion 60 shown in FIG. easy.
- the overhanging wall 80 shown in FIGS. 15 and 16 is not disposed on the central axis O of the tubular flow path 37 when the connector 1 is viewed in the insertion direction B, and is viewed in the insertion direction B.
- the end opening 104 (see FIG. 9 and the like) of the male connector 100 inserted so that the central axis O of the tubular flow path 37 and the central axis substantially coincide with the central axis O so as to overlap at a different position. are arranged.
- the overhanging wall portion 80 has a configuration that makes it easier to ensure the flow rate per unit time of the liquid flowing from the insertion portion 5 side to the tubular flow path 37 side. Furthermore, the overhanging wall 80 shown in FIGS. 15 and 16 can be molded with a single mold, which is also advantageous in that the mold structure can be simplified.
- FIG. 17 is a diagram showing another modification of the liquid collision surface 39 of the present embodiment.
- FIG. 17 is a view showing the connector 1 including the annular flange 90 instead of the partition 40, and is an enlarged sectional view of the annular flange 90 in the same cross section as FIG.
- the annular flange portion 90 has a configuration that projects from the inner peripheral surface of the flow channel 6 toward the inside of the flow channel 6 in a direction C orthogonal to the insertion direction B, and an inner wall that defines the flow channel 6. It is integrally formed.
- the housing 2 includes an annular flange portion 90 that protrudes inward of the flow path 6.
- the upstream surface 91 as the liquid collision surface 39 of the annular flange portion 90 is a surface on the upstream side in the insertion direction B in the annular flange portion 90, and a plane portion 92 extending in the direction C orthogonal to the insertion direction B, An annular rib 93 protruding from the inner edge of the flat portion 92 in the removal direction D. Since the upstream surface 91 includes the annular rib 93, the liquid flowing in from the distal end portion 101 of the inserted male connector 100 and colliding with the flat surface portion 92 is regulated in the flowing direction by the annular rib 93, and the inner wall defining the flow path 6. Along the circumferential direction E. That is, since a flow along the inner wall that defines the flow path 6 is formed, the liquid that stays in the hollow portion 4 can be reduced.
- the tip receiving surface 42 shown in FIG. 17 has the same configuration as that shown in FIGS. 15 and 16. Also, the inner wall of the portion adjacent to the tip receiving surface 42 shown in FIG. 17 in the circumferential direction E is radially outward of the flow path 6 with respect to the tip receiving surface 42, similarly to the enlarged diameter surface 87 shown in FIGS. 15 and 16. It is preferable to be configured to be positioned.
- FIG. 9 is a cross-sectional view showing the same cross section as the cross section shown in FIG. 2 for the connector 1 in a state where the male connector 100 is inserted.
- FIG. 10 is a cross-sectional view showing the same cross section as the cross section shown in FIG. 3 for the connector 1 in a state where the male connector 100 is inserted.
- FIG. 11 is an enlarged cross-sectional view in which the vicinity of the tip 101 of the male connector 100 is enlarged in FIG.
- the male connector 100 inserted into the connector 1 will be described.
- the male connector 100 used here has a shape defined by ISO 594, and the outer diameter in a cross section perpendicular to the male connector insertion direction B is gradually decreased by 6% per 1 mm toward the tip portion 101.
- the taper degree is as follows. More specifically, the male connector 100 can be formed of the same material as that of the housing 2 described above. When the male connector 100 is formed of a rigid material, the diameter of the tip is set to 3.925 mm-3. In the case of 990 mm and made of a semi-rigid material, the tip diameter is set to 3.925 mm to 4.027 mm. Moreover, the length of the male connector 100 shall be 7.50 mm or more.
- the distal end portion 101 of the male connector 100 is elastically deformed so as to push the elastic valve body 3 inward of the connector 1, It reaches the flow path 6 in the holder 8 through the slit 11 penetrating. That is, in the present embodiment, the channel 103 in the male connector 100 is in direct communication with the channel 6 of the holder 8 in the state shown in FIGS.
- the elastic valve body 3 is elastically deformed by the insertion of the male connector 100, enters between the inner wall of the bottom cap 10 and the outer wall of the male connector 100, and comes into close contact with the outer surface of the male connector 100. Thereby, it is suppressed that a liquid leaks from the insertion part 5 of the connector 1 outside.
- the distal end portion 101 of the male connector 100 sandwiches the elastic valve body 3 with respect to the distal end receiving surface 42 provided on the inner wall that defines the connection flow path 38 among the inner walls of the holder 8.
- the male connector is positioned in the insertion direction B.
- the distal end portion 101 of the male connector 100 includes a distal end peripheral surface 101 a constituting an outer wall in a direction C orthogonal to the insertion direction B of the male connector, and a flow path in the male connector 100.
- the distal end curved surface 101c of the distal end portion 101 of the male connector 100 presses the distal end receiving surface 42 via the elastic valve body 3, thereby inserting the male connector 100 in the insertion direction B. Is regulated, and the position of the distal end portion 101 of the male connector 100 in the insertion direction B is positioned.
- the tip receiving surface 42 is configured to receive the tip curved surface 101c of the male connector 100 via the elastic valve body 3, but the tip receiving surface 42 is used instead of the tip curved surface 101c of the male connector 100.
- the tip peripheral surface 101a and the tip flat surface 101b may be received.
- the tip receiving surface 42 is configured to receive the tip 101 of the male connector 100 via the elastic valve body 3, but the tip receiving surface 42 does not pass through the elastic valve body 3 and is male. The configuration may be such that the front end portion 101 is received by directly contacting any surface of the front end portion 101 of the connector 100.
- the tip 101 of the male connector 100 and the upstream surface 41 (liquid collision surface of the partition 40). 39) is non-contact. That is, in the state where the male connector 100 is received by the tip receiving surface 42, the upstream surface 41 (liquid collision surface 39) is not so that the distal end flat surface 101 b of the male connector 100 contacts the upstream surface 41 of the partition 40. In the insertion direction B, it is located downstream of the tip receiving surface 42.
- the upstream surface 41 of the present embodiment is a flat surface extending in the direction C orthogonal to the insertion direction B
- the tip receiving surface 42 is the upstream surface 41 in the cross-sectional views of FIGS. It is a curved surface that is continuous with both ends and has a linear cross section having a predetermined angle with respect to a direction C perpendicular to the insertion direction B.
- the tip receiving surface 42 of the present embodiment is composed of two curved surfaces (straight lines in the cross-sectional views of FIGS. 10 and 11) facing each other in the direction C orthogonal to the insertion direction B.
- the facing distance in the direction C perpendicular to the insertion direction B is not small but is formed in a tapered shape.
- the downstream ends of the two curved surfaces in the insertion direction B are continuous with the upstream surface 41. Therefore, even when the tip receiving surface 42 receives the tip 101 of the male connector 100, in the insertion direction B, the tip flat surface 101 b of the male connector 100 and the upstream surface 41 (liquid collision surface 39) of the partition 40.
- a gap is formed between them, and the distal end flat surface 101 b of the male connector 100 does not contact the upstream surface 41 of the partition 40.
- a liquid such as a chemical solution is supplied into the connector 1 from the tip opening 104 of the male connector 100.
- the flow of the liquid will be described with reference to FIG. In FIG. 9, the flow of the liquid in the connector 1 is indicated by arrows.
- the liquid flowing out from the front end opening 104 of the male connector 100 enters the connection flow path 38 in the flow path 6 and first collides with the upstream surface 41 (liquid collision surface 39) of the partition portion 40 as described above.
- the liquid that has collided with the upstream surface 41 then proceeds along the upstream surface 41 in the direction C perpendicular to the insertion direction B.
- the tip receiving surface 42 is continuous with the upstream surface 41 and the tip receiving surface 42 receives the tip 101 of the male connector 100, the liquid traveling along the upstream surface 41 is inserted in the insertion direction.
- the flow flows toward the first connection channel 43 and the second connection channel 44. Then, it flows into the tubular flow channel 37 through the first connection flow channel 43 and the second connection flow channel 44.
- the liquid flowing toward the first connection channel 43 and the second connection channel 44 along the upstream surface 41 flows from the outer edge of the upstream surface 41 to the outside of the upstream surface 41 in the direction C orthogonal to the insertion direction B. It is pushed out vigorously toward. Therefore, the liquid pushed out from the upstream surface 41 is opposed to the inner wall (connection) of the holder 8 facing the first connection channel 43, the second connection channel 44, and the partition 40 in the direction C orthogonal to the insertion direction B. To the inner wall defining the flow path 38, and a flow along the inner wall is formed. As shown by the arrows in FIG.
- the elastic valve body 3 is elastically deformed by insertion of the male connector 100, enters between the inner wall of the bottom cap 10 and the outer wall of the male connector 100, and is in close contact with the outer surface of the male connector 100.
- a wide space capable of accommodating the elastic valve body is secured between the inner wall of the housing such as the bottom cap 10 and the outer wall of the male connector.
- the elastic valve body can be brought into close contact with the outer wall of the male connector by the restoring force of the elastic valve body, but may not be brought into close contact with the inner wall of the housing.
- the elastic valve body may not be brought into close contact with the inner wall of the housing due to, for example, the mounting accuracy of the elastic valve body and the dimensional tolerance of the members constituting the connector.
- the liquid flowing out from the front end opening of the male connector in a state where the male connector is inserted may accidentally enter the gap between the above-mentioned non-adhered portions, and may stay continuously. .
- this liquid there exists a possibility that microorganisms may proliferate by continuous residence.
- a liquid flow is formed along the inner wall that defines the connection flow path 38, and the outer wall of the elastic valve body 3 and the inner walls of the holder 8 and the bottom cap 10 are formed. Even if there is a gap between them, the liquid is intentionally allowed to enter the gap.
- the liquid that has entered the gap may be pushed out again from the vicinity of the position where the gap has entered into the connection channel 38.
- the liquid that has entered the gap may be pushed out again from the vicinity of the position where the gap has entered into the connection channel 38.
- FIG. 10 and FIG. It passes through the tubular space surrounded by the body 3, the holder 8, and the bottom cap 10, and moves in the circumferential direction centering on the insertion direction B, and may be pushed out from a position that enters the gap or a position different from the vicinity thereof.
- the connector 1 of this embodiment is provided with the partition part 40 which has the upstream surface 41 as the liquid collision surface 39, it causes the turbulent flow of the liquid in the flow path 6, and a liquid is the housing 2 (FIG. 2 etc.). Reference) can be prevented from staying continuously.
- FIG. 12 is a view showing the infusion set 110.
- the infusion set 110 forms an infusion line connected from a first medical instrument having a male connector 100 such as a syringe to a second medical instrument such as an indwelling needle.
- the infusion set 110 of this embodiment includes a connector 1 to which a first medical instrument having a male connector such as a syringe is connected, a plurality of infusion tubes 111, and a liquid such as an infusion agent in the infusion tube 111.
- the connector 1 is provided at a position where the male connector is connected to the first medical instrument.
- the connector 1 is not limited to this position.
- an infusion line as shown in FIG. A sub-line that allows another chemical solution or the like to be co-injected in the line may be provided, and the connector 1 may be provided as a co-injection port in the sub-line.
- the infusion set 110 of the present embodiment is configured by the connector 1, the infusion tube 111, the clamp 112, the air vent filter 113, and the clamp 114, but the members constituting the infusion set are not limited to these, for example
- a configuration including a drip tube, a T-shaped co-infusion connector, and the like can be appropriately changed according to the purpose and use of the infusion set.
- top cap used here means a cap that contacts the top surface of the elastic valve body.
- bottom cap means a cap that contacts the bottom surface of the elastic valve body.
- the present invention relates to a connector and an infusion set, and more particularly to a connector to which a male connector can be connected and an infusion set using the connector.
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- Health & Medical Sciences (AREA)
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- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Description
図4は、弾性弁体3単体の斜視図である。図5A及び図5Bは、図4におけるIII-III及びIV-IV断面図である。
以下、図1~図3を参照しながら、天面キャップ9、底面キャップ10、及びホルダ8の構成について説明する。
図2、図3に示すように、底面キャップ10は、天面キャップ9と同様、略円筒状の中空筒部29と、中空筒部29の一端側に設けられたフランジ部30とを備える。中空筒部29の他端側には、抜去方向Dに向かって突出し、上述した弾性弁体3の底面環状溝21に入り込んで弾性弁体3を圧縮し、天面キャップ9の係止突起26と共に弾性弁体3を挟持する係止突起31が設けられている。このように、弾性弁体3は、上述した天面キャップ9の係止突起26と底面キャップ10の係止突起31とにより構成される挟持部32により、圧縮及び挟持され、中空部4内、具体的には挿入部5内での位置が固定される。
図2、図3に示すように、ホルダ8は、天面キャップ9及び底面キャップ10を支持し、その内部に流路6を区画している。本実施形態のホルダ8は、天面キャップ9及び底面キャップ10と直接接触することにより両者を支持しているが、例えば、ホルダ8が天面キャップ9とは接触せずに底面キャップ10のみと直接接触し、天面キャップ9は底面キャップ10に接触、支持させる構成としてもよい。すなわちホルダ8が天面キャップ9と底面キャップ10のいずれか一方と直接接触して支持し、他方とは直接接触しない構成としてもよい。なお、直接接触する部材同士は、例えば超音波接着などにより接着するようにすることが好ましい。
次に、仕切部40の詳細な構成について説明する。図6は、ホルダ8の単体について、図2に示すコネクタ1の断面と同じ断面を示す断面斜視図である。また、図7は、ホルダ8の単体について、図3に示すコネクタ1の断面と同じ断面を示す断面斜視図である。更に、図8は、ホルダ8の単体を挿入方向Bで見た上面図である。なお、図8で示す円形の二点鎖線は、説明の便宜上、このホルダ8に取り付けられる天面キャップ9の縁部24の位置を示している。以下、図2、図3及び図6~図8を参照しながら、仕切部40について詳細に説明する。
ここまでは、図1~図8に示すように、主に、外方からオスコネクタ100が挿入されていない状態でのコネクタ1の構成について説明した。以下、挿入部5に外方からオスコネクタ100が挿入されている状態のコネクタ1について説明する。図9は、オスコネクタ100が挿入されている状態のコネクタ1について、図2に示す断面と同じ断面を示す断面図である。図10は、オスコネクタ100が挿入されている状態のコネクタ1について、図3に示す断面と同じ断面を示す断面図である。また、図11は、図10のうち、オスコネクタ100の先端部101付近を拡大した拡大断面図である。
最後に、本発明の1つの実施形態としての、コネクタ1を備える輸液セット110について説明する。図12は輸液セット110を示す図である。
2:ハウジング
3:弾性弁体
4:中空部
5:挿入部
6:流路
7:キャップ
8:ホルダ
9:天面キャップ
10:底面キャップ
11:スリット
12:弾性弁体の天面
13:天面中心部領域
14:天面外部領域
15:天面環状溝
16:側壁
17:弾性弁体の底面
18:底面中心部領域
19:厚肉部領域
20:底面外部領域
21:底面環状溝
22:天面キャップの中空筒部
23:天面キャップのフランジ部
24:縁部
25:ねじ山
26:天面キャップの係止突起
27:内壁
28:延在部
29:底面キャップの中空筒部
30:底面キャップのフランジ部
31:底面キャップの係止突起
32:挟持部
33:ねじ山
34:外筒部
35:オスルアー部
36:連結部
37:管状流路
38:連結流路
39:液体衝突面
40:仕切部
41:仕切部の上流面
42:先端受け面
43:第1連結流路
44:第2連結流路
45:仕切部の下流面
46:仕切部の側面
50:弾性弁体の側面
60:仕切部
61:上流面
62:頂部
63:側面
64:斜面
65:下流面
66:頂部
67:斜面
68:段差面
70:仕切部材
71:支持部
71a:第1嵌合部
71b:第2嵌合部
72:側面
73:切欠き部
73a:上流側切欠き部
73b:下流側切欠き部
74:上流面
75:下流面
76:段差面
77:先端受け面
78:段差面
80:張り出し壁部
81:上流面
82:側面
83:下流面
84:平面部
85:リブ状突出部
86:段差面
87:拡径面
90:環状フランジ部
91:上流面
92:平面部
93:環状リブ
100:オスコネクタ
101:先端部
101a:先端周面
101b:先端平面
101c:先端曲面
103:オスコネクタの流路
104:先端開口
110:輸液セット
111:輸液チューブ
112:クレンメ
113:エアベントフィルタ
114:クランプ
1000:コネクタ
600:流路
3800:連結流路
B:オスコネクタの挿入方向
C:オスコネクタの挿入方向と直交する方向
D:オスコネクタの抜去方向
E:管状流路の中心軸線の周りの周方向
O:管状流路の中心軸線
W1:流路に挟まれた仕切部の幅
W2:連結流路を区画する内壁の幅
Claims (10)
- オスコネクタが外方から挿入される挿入部及び前記挿入部と連通する流路を区画するハウジングと、
スリットを有し、前記挿入部を閉塞する弾性弁体と、を備え、
前記流路を区画する内壁には、前記挿入部に挿入された前記オスコネクタの先端開口と前記オスコネクタの挿入方向において対向し、前記先端開口から流出する液体と衝突する液体衝突面が、一体で形成されていることを特徴とするコネクタ。 - 前記ハウジングは、前記挿入方向と直交する方向に前記流路を仕切る仕切部を備え、
前記液体衝突面は、前記仕切部における前記挿入方向の上流側の面である上流面により構成されることを特徴とする、請求項1に記載のコネクタ。 - 前記仕切部は、前記挿入方向と直交する方向に前記流路を複数の分離された流路に仕切ることを特徴とする、請求項2に記載のコネクタ。
- 前記上流面は、前記挿入方向と直交する方向に延在する平面であることを特徴とする、請求項2又は3に記載のコネクタ。
- 前記上流面は、前記挿入方向の上流側から下流側へ下る斜面であることを特徴とする、請求項2又は3に記載のコネクタ。
- 前記仕切部は、前記挿入方向で見た場合に、略円形状の外形を有することを特徴とする、請求項2乃至5のいずれか1つに記載のコネクタ。
- 前記ハウジングは、前記内壁より内方に向かって張り出した張り出し壁部を備え、
前記液体衝突面は、前記張り出し壁部における前記挿入方向の上流側の面である上流面により構成されることを特徴とする、請求項1に記載のコネクタ。 - 前記ハウジングを前記挿入方向で見た場合に、前記仕切部の前記流路に挟まれる最大幅は、前記挿入部の一端である挿入開口を区画する前記ハウジングの内径よりも小さいことを特徴とする、請求項2乃至6のいずれか1つに記載のコネクタ。
- 前記流路を区画する前記内壁には、前記オスコネクタの先端部を受ける先端受け面が一体で形成されており、
前記液体衝突面は、前記挿入方向において、前記先端受け面よりも下流側に位置することを特徴とする請求項1乃至8のいずれか1つに記載のコネクタ。 - 請求項1乃至9のいずれか1つに記載のコネクタを備えることを特徴とする輸液セット。
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JP2016510027A JP6563903B2 (ja) | 2014-03-26 | 2015-03-23 | コネクタ及び輸液セット |
CN201580016242.2A CN106163608B (zh) | 2014-03-26 | 2015-03-23 | 连接器以及输液组件 |
EP15769218.7A EP3124071B1 (en) | 2014-03-26 | 2015-03-23 | Connector and infusion set |
US15/274,630 US10238858B2 (en) | 2014-03-26 | 2016-09-23 | Connector and infusion set |
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JP7370512B2 (ja) * | 2019-11-19 | 2023-10-30 | 株式会社トップ | コネクタ |
US11857752B2 (en) * | 2019-12-16 | 2024-01-02 | Rymed Technologies, Llc | High flow, needleless connector |
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EP3124071A4 (en) | 2017-09-27 |
JP6563903B2 (ja) | 2019-08-21 |
US10238858B2 (en) | 2019-03-26 |
CN106163608A (zh) | 2016-11-23 |
CN106163608B (zh) | 2019-07-26 |
US20170007819A1 (en) | 2017-01-12 |
EP3124071A1 (en) | 2017-02-01 |
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JPWO2015146142A1 (ja) | 2017-04-13 |
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