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WO2013146739A1 - Raccord - Google Patents

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Publication number
WO2013146739A1
WO2013146739A1 PCT/JP2013/058699 JP2013058699W WO2013146739A1 WO 2013146739 A1 WO2013146739 A1 WO 2013146739A1 JP 2013058699 W JP2013058699 W JP 2013058699W WO 2013146739 A1 WO2013146739 A1 WO 2013146739A1
Authority
WO
WIPO (PCT)
Prior art keywords
slit
valve body
male connector
connector
top surface
Prior art date
Application number
PCT/JP2013/058699
Other languages
English (en)
Japanese (ja)
Inventor
由紀子 古川
泰央 上田
Original Assignee
テルモ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by テルモ株式会社 filed Critical テルモ株式会社
Priority to JP2014507893A priority Critical patent/JP6177762B2/ja
Publication of WO2013146739A1 publication Critical patent/WO2013146739A1/fr

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Classifications

    • 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
    • A61M39/02—Access sites
    • 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
    • A61M39/02—Access sites
    • A61M39/04—Access sites having pierceable self-sealing members
    • A61M39/045—Access sites having pierceable self-sealing members pre-slit to be pierced by blunt instrument
    • 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
    • A61M39/105—Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes
    • 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

Definitions

  • the present invention relates to a connector capable of liquid-tightly connecting male connectors such as various medical devices and infusion containers.
  • a 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 A connector to which such a male connector can be connected is disclosed in Patent Document 1, for example.
  • the port (connector) disclosed in Patent Document 1 includes a disk-shaped valve having a straight insertion hole formed in the center, a pedestal that supports the peripheral edge of the valve from the lower surface side, and an upper surface in the center of the valve. And a cover that covers the peripheral edge of the valve from the upper surface side.
  • the convex part which suppresses the tear of an insertion hole is formed in the longitudinal direction vicinity of the insertion hole in the lower surface of a valve.
  • the connector disclosed in Patent Document 1 suppresses the tearing of the insertion hole by the convex portion provided on the lower surface of the valve, but the openability of the insertion hole is not considered. If the openability of the insertion hole is improved, for example, even if the pressure inside the connector is high, the male connector can be easily inserted. Therefore, the connector as disclosed in Patent Document 1 is desired to improve the opening of the valve body.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a connector that can improve the opening of a valve body when a male connector is connected.
  • the connector of the present invention is formed of a housing having a flow path through which a liquid passes, a male connector connecting portion having a substantially circular cylindrical hole communicating with the flow path, and an elastic material. And a valve body for closing the male connector connection portion.
  • the valve body is formed in a cylindrical shape, and has a top surface exposed from the male connector connection portion, a bottom surface opposite to the top surface, a slit that opens at least on the top surface or the bottom surface, and a length of the slit on the bottom surface.
  • thick portions provided on both sides in the direction. The thick portion is formed in a region surrounded by two lines intersecting the longitudinal direction of the slit and the outer edge portion on the bottom surface.
  • a region surrounded by two lines intersecting the longitudinal direction of the slit and the outer edge portion of the bottom surface on both sides in the longitudinal direction of the slit on the bottom surface of the valve body is formed.
  • This thick portion regulates the deformation of the valve body such that the slit opens in the width direction when the top surface of the valve body is pressed by the male connector. Thereby, the opening property of a slit can be improved.
  • the opening of the valve body when connecting the male connector is improved, so that the male connector can be easily inserted even when the pressure inside the connector is high.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG. It is a perspective view of the valve body in the connector concerning one embodiment of the present invention. It is a top view of the valve body in the connector which concerns on one embodiment of this invention. It is a bottom view of the valve body in the connector concerning one embodiment of the present invention.
  • FIG. 5 is a sectional view taken along line BB in FIG. 4.
  • FIG. 5 is a cross-sectional view taken along the line CC in FIG. 4.
  • FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing a state in which the male connector is connected to the connector according to the embodiment of the present invention. It is a bottom view of the valve body which does not provide a thick part. It is a graph which shows the measurement result which measured the timing of opening of a valve element.
  • FIG. 1 is a perspective view showing a connector according to an embodiment.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • the connector 1 includes a housing 2 and a valve body 3 fixed to the housing 2.
  • Examples of the material of the housing 2 include polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, polyamideimide.
  • polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, polyamideimide.
  • Polycarbonate poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene Copolymers, polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexane terephthalate (PCT), polyethers, polyether ketones (PE) ), Polyether ether ketone (PEEK), polyether imide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, polyether sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoro Examples thereof include various resin materials such as ethylene, polyvinylidene fluoride, and other fluorine resin
  • the housing 2 has a housing main body 5 and a male connector connecting portion 6 joined to the housing main body 5.
  • the housing body 5 is formed of a substantially cylindrical hollow casing, and has an upper surface 5a that is one end in the axial direction, a lower surface 5b that is the other end, and an outer peripheral surface 5c.
  • a first tube connection port 11 and a second tube connection port 12 are provided on the outer peripheral surface 5 c of the housing body 5. These tube connection ports 11 and 12 are formed in a cylindrical shape protruding from the outer peripheral surface 5 c of the housing body 5. The axial center of the first tube connection port 11 and the axial center of the second tube connection port 12 coincide with each other in the radial direction of the housing body 5.
  • a step portion 14 having a substantially circular planar shape is formed on the upper surface 5 a of the housing body 5.
  • the male connector connecting portion 6 is fitted to the stepped portion 14.
  • a flow path recess 15 is provided in the center of the stepped portion 14.
  • the flow path recess 15 is formed in a substantially circular planar shape and communicates with the first tube connection port 11 and the second tube connection port 12. That is, the channel recess 15 forms the channel 13 inside the housing body 5.
  • connection wall 18 is provided on the inner wall surface of the flow path recess 15.
  • the connection wall 18 has a wall surface that intersects the direction in which the first tube connection port 11 and the second tube connection port 12 face each other. Therefore, a liquid such as a chemical solution flowing from the first tube connection port 11 gets over the connection wall 18 and flows to the second tube connection port 12. Further, a liquid such as a chemical solution flowing from the second tube connection port 12 passes over the connection wall 18 and flows to the first tube connection port 11.
  • the male connector connecting portion 6 is formed in a substantially cylindrical shape, and the internal space communicates with the flow path 13 of the housing 2.
  • the male connector connection portion 6 includes a first member 21 that is joined to the housing body 5 and a second member 22 that is joined to the first member 21.
  • the first member 21 forms a proximal end portion of the male connector connecting portion 6.
  • the first member 21 includes an inner cylinder portion 24 and a flange portion 25.
  • An outer cylinder portion 28 (described later) of the second member 22 is fitted to the outer peripheral surface of the inner cylinder portion 24.
  • the cylinder hole of the inner cylinder part 24 is formed in a circle. At one end in the axial direction of the inner cylinder portion 24, a fitting recess 24 a for fitting a fixing portion 32 described later of the valve body 3 is formed. In addition, a tapered surface 24b is formed on the inner surface of the inner cylinder portion 24 that forms a circular cylinder hole.
  • the flange portion 25 is provided continuously to the other end in the axial direction of the inner cylinder portion 24, and is formed in a ring shape that protrudes radially outward of the inner cylinder portion 24.
  • the outer diameter of the flange portion 25 is substantially equal to the diameter of the step portion 14 in the housing body 5.
  • the flange portion 25 is joined to the housing body 5 by fitting into the step portion 14.
  • the flange portion 25 may be joined to the housing body 5 by a fixing method using an adhesive, a fixing screw, or the like, or a fixing method by fusion.
  • an engagement groove 25 a is formed on the upper surface of the flange portion 25 to engage with an engagement protrusion 29 a (described later) of the second member 22.
  • the second member 22 forms the tip of the male connector connecting portion 6.
  • the second member 22 includes a connector fitting part 27 into which the male connector 100 (see FIG. 8) is fitted, an outer cylinder part 28 continuous with the connector fitting part 27, and an engagement continuous with the outer cylinder part 28. It is composed of a joint portion 29.
  • the connector fitting portion 27 is formed in a substantially cylindrical shape and has a cylindrical hole 27a.
  • a tapered surface 27 b is formed on the inner surface of the connector fitting portion 27 so as to increase the diameter of the cylindrical hole 27 a toward one end in the axial direction of the connector fitting portion 27. By providing the tapered surface 27b, the male connector 100 can be easily inserted into the connector fitting portion 27.
  • the other end of the connector fitting portion 27 in the axial direction is formed with a concave portion 27c for fitting the fixed portion 32 of the valve body 3. That is, the male connector connecting portion 6 fixes the valve body 3 by sandwiching the fixing portion 32 of the valve body 3 between the inner cylinder portion 24 of the first member 21 and the connector fitting portion 27 of the second member 22. ing.
  • the outer cylinder portion 28 is continuous with the other end of the connector fitting portion 27 in the axial direction, and is formed in a cylindrical shape having a larger inner diameter than the connector fitting portion 27.
  • the inner diameter of the outer cylinder part 28 is substantially equal to the outer diameter of the inner cylinder part 24 in the first member 21.
  • the outer cylinder part 28 is fitted to the outer peripheral surface of the inner cylinder part 24 in the first member 21.
  • the outer cylinder portion 28 may be fixed to the inner cylinder portion 24 of the first member 21 by a fixing method using an adhesive, a fixing screw, or the like, or a fixing method by fusion.
  • the outer diameter of the outer cylinder portion 28 is substantially equal to the outer diameter of the connector fitting portion 27.
  • a screw portion 27 d is provided on the outer peripheral surfaces of the connector fitting portion 27 and the outer cylinder portion 28.
  • a lock portion (not shown) (so-called luer lock) provided at a predetermined distance around the male connector is screwed into the screw portion 27d.
  • the engaging portion 29 continues to the distal end in the axial direction of the outer tube portion 28 and protrudes outward in the radial direction of the outer tube portion 28.
  • an engaging protrusion 29a is formed on the lower surface of the engaging portion 29.
  • the engagement protrusion 29 a is engaged with an engagement groove 25 a provided in the first member 21.
  • the engaging portion 29 is joined to the housing body 5 by being fitted into the fitting recess 7 of the housing body 5.
  • the engaging portion 29 may be fixed to the first member 21 and the housing body 5 by a fixing method using an adhesive, a fixing screw, or the like, or a fixing method by fusion.
  • the diameter X of the cylindrical hole 27a in the connector fitting portion 27 is determined according to the size of the upper portion 31A (see FIG. 3) of the deformable portion 31 described later of the valve body 3.
  • the diameter X of the cylindrical hole 27a will be described in detail when the dimensions of the valve body 3 are described.
  • the distance h from the lower peripheral edge of the tapered surface 27b to the upper surface of the connection wall 18 is preferably 5 to 15 mm.
  • the diameter ⁇ of the cylinder hole of the inner cylinder part 24 is determined according to the size of a lower part 31B (see FIG. 3) of a deformed part 31 (to be described later) of the valve body 3, but is preferably 4 mm or more.
  • the tube hole of the inner tube portion 24 is a space necessary for causing the valve body 3 to undergo elastic deformation described later.
  • the diameter ⁇ of the inner cylinder portion 24 may be at least partly 4 mm or more. For example, when the diameter of the cylinder hole of the inner cylinder part 24 continuously decreases toward the flow path 13, the diameter on the connector fitting part 27 side in the cylinder hole of the inner cylinder part 24 may be 4 mm or more.
  • FIG. 3 is a perspective view of the valve body 3.
  • FIG. 4 is a plan view of the valve body 3
  • FIG. 5 is a bottom view of the valve body 3.
  • 6 is a sectional view taken along the line BB in FIG. 4
  • FIG. 7 is a sectional view taken along the line CC in FIG.
  • the valve body 3 is molded by a mold (not shown) and is formed so as to be elastically deformable.
  • the material of the 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, fluorine
  • Various rubber materials such as rubber, and various thermoplastics such as styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluoro rubber, chlorinated polyethylene, etc.
  • An elastomer may be mentioned, and one or a mixture of two or more of these may be used.
  • the hardness of the valve body 3 is preferably 20 to 60 ° (A hardness). Thereby, since an appropriate elastic force can be ensured in the valve body 3, the later-described elastic deformation can be caused in the valve body 3.
  • the valve body 3 includes a deformable portion 31 in which a slit 33 is formed, and a fixing portion 32 provided continuously to the deformable portion 31.
  • the deformable portion 31 is formed in a shape in which two cylindrical bodies having the same axial center and different diameters are continuous in the axial direction, and the upper portion 31A, which is an upper cylindrical body, has a diameter larger than that of the upper portion 31A. It has the lower part 31B which is a big cylinder.
  • the upper part 31 ⁇ / b> A forms the top surface 31 a of the deformable part 31.
  • the lower portion 31B forms a bottom surface 31b of the deformable portion 31.
  • the fixing portion 32 is continuous with the outer peripheral surface 31c of the lower portion 31B.
  • the lower part 31B is formed in a cylindrical body having a larger diameter than the upper part 31A.
  • the upper part 31 ⁇ / b> A of the deforming part 31 is inserted into the cylindrical hole 27 a of the connector fitting part 27 in the housing 2.
  • the outer diameter of the upper portion 31A is larger than the diameter of the cylindrical hole 27a of the connector fitting portion 27. Therefore, when the upper portion 31A of the deformable portion 31 is inserted into the cylindrical hole 27a of the connector fitting portion 27, it is compressed by the connector fitting portion 27 (male connector connecting portion 6).
  • the top surface 31a is a plane orthogonal to the axial direction of the deformable portion 31, and is exposed from the connector fitting portion 27 (male connector connecting portion 6).
  • the lower part 31 ⁇ / b> B of the deforming part 31 is inserted into the cylindrical hole of the inner cylindrical part 24 in the housing 2.
  • the outer diameter of the lower part 31 ⁇ / b> B of the deforming part 31 is larger than the inner diameter of the inner cylinder part 24. Therefore, the lower part 31 ⁇ / b> B of the deforming part 31 is compressed by the inner cylinder part 24 when inserted into the cylinder hole of the inner cylinder part 24.
  • the slit 33 opens in the top surface 31 a of the deformable portion 31.
  • the slit 33 is formed in a straight section extending in the radial direction of the deformable portion 31 and has a predetermined width.
  • the slit 33 is formed by a slit projection provided on a mold (not shown).
  • the bottom surface 31 b of the deformable portion 31 is formed with a recessed portion 34 that is curved so as to be recessed toward the top surface 31 a.
  • the concave portion 34 is formed in a substantially quadrangular planar shape, and is opposed to the concave surface 34 a where the slit 33 opens, the thick side wall surfaces 34 b and 34 c facing the longitudinal direction of the slit 33, and the width direction of the slit 33. Width side walls 34d and 34e are provided.
  • the thick side wall surfaces 34 b and 34 c are formed in a plane parallel to the width direction of the slit 33, and the width side wall surfaces 34 d and 34 e are formed in curved surfaces that curve along the outer peripheral surface 31 c of the deformable portion 31. .
  • the thickness of the valve body 3 can be reduced, and the valve body 3 can be easily deformed when the male connector 100 is connected.
  • thick portions 35A and 35B formed thicker than the portion where the recessed surface 34a is formed are formed on both sides of the bottom surface 31b in the longitudinal direction of the slit 33.
  • the thick portion 35A is formed in a region from the thick side wall surface 34b to the outer edge portion of the bottom surface 31b
  • the thick portion 35B is formed in a region from the thick side wall surface 34c to the outer edge portion of the bottom surface 31b.
  • the thick portions 35 ⁇ / b> A and 35 ⁇ / b> B regulate the direction in which the deformable portion 31 deforms when the male connector 100 is connected, and deform the deformable portion 31 so that the slit 33 opens in the width direction. That is, since the thin portion is easily deformed, the deformed portion 31 is easily elastically deformed on the side without the thick portions 35A and 35B, and is deformed so that the slit 33 opens in the width direction.
  • the thick side wall surfaces 34 b and 34 c are formed on a plane parallel to the width direction of the slit 33.
  • the thick side wall surfaces (end portions of the thick portions 35A and 35B) 34b and 34c according to the present invention may be surfaces that intersect with the longitudinal direction of the slit 33, for example, convex curved surfaces facing each other. May be.
  • the shape of the end portion on the slit 33 side can be appropriately set as long as the deformation direction of the deformation portion 31 can be regulated so that the slit 33 opens in the width direction. That is, the thick portion according to the present invention is defined as a region provided on both sides in the longitudinal direction of the slit 33 and surrounded by two lines intersecting the longitudinal direction of the slit 33 and the outer edge portion of the bottom surface 31b. Can do.
  • the slit 33 includes a top surface side slit portion 37 that opens to the top surface 31a and a bottom surface side slit portion 38 that opens to the recessed portion 34 provided on the bottom surface 31b.
  • the top surface side slit portion 37 and the bottom surface side slit portion 38 are formed by a top surface side slit protrusion and a bottom surface slit protrusion provided on a mold (not shown).
  • the top surface side slit portion 37 is formed in a linear cross section extending in the radial direction of the deformable portion 31 and has a predetermined width.
  • the top end of the top surface side slit portion 37 in the depth direction is located in the deformable portion 31.
  • upper surface side slit part 37 has the taper part 37a from which an opening becomes narrow as it goes to the front-end
  • Both ends in the longitudinal direction of the top surface side slit portion 37 are formed in an arc shape (see FIG. 4).
  • both ends of the top surface side slit part 37 become difficult to tear, and the durability of the valve body 3 can be improved. it can.
  • both ends of the slit cannot be formed in an arc shape. Therefore, when the valve body is pressed and elastically deformed by the male connector, stress concentrates at two points that are both ends of the slit, and both ends of the slit are easily torn.
  • the length e (see FIGS. 4 and 7) of the top surface side slit portion 37 in the longitudinal direction is preferably 1 to 4 mm. If the length e of the top surface side slit portion 37 is too short, the opening of the valve body 3 at the time of elastic deformation is deteriorated. On the other hand, if the length e of the top surface side slit portion 37 is too long, there arises a problem that the male connector 100 (see FIG. 8) enters the slit 33.
  • the width f (see FIG. 4) which is the length in the width direction of the top surface side slit portion 37, is 0.1 to about when the top surface side slit portion 35 is closed by compression by the male connector connecting portion 6. 0.6 mm is preferred.
  • the bottom surface side slit portion 38 is formed in a straight cross section extending in the same direction as the top surface side slit portion 37, and has a predetermined width.
  • the bottom surface side slit portion 38 faces the top surface side slit portion 37.
  • the front end in the depth direction of the bottom surface side slit portion 38 is located in the deformable portion 31 and communicates with the front end of the top surface side slit portion 37.
  • the tip of the bottom surface side slit portion 38 and the tip of the top surface side slit portion 37 may be separated by a slight distance (for example, 0.01 to 1.0 mm). That is, the bottom side slit part 38 and the top side slit part 37 are not in communication.
  • a mold (not shown) for molding such a valve body has a structure in which the top side slit projection and the bottom side slit projection do not contact each other. As a result, wear of the top surface side slit protrusion and the bottom surface side slit protrusion can be suppressed, and the life of the mold can be extended.
  • Both end portions in the longitudinal direction of the bottom side slit portion 38 are formed in an arc shape (see FIG. 5). Thereby, when the deformation
  • the length g (see FIGS. 5 and 7) of the bottom surface side slit portion 38 in the longitudinal direction is set longer than the length e of the top surface side slit portion 37.
  • the length g of the bottom side slit portion 38 is preferably 2 to 4.5 mm. If the length g of the bottom side slit portion 38 is too short, the opening of the valve body 3 at the time of elastic deformation is deteriorated.
  • the fixed portion 32 is continuous with the outer peripheral surface 31c of the lower portion 31B of the deformable portion 31 and protrudes in the radially outward direction of the deformable portion 31.
  • the fixed portion 32 has an upper fixed piece 32 a and a lower fixed piece 32 b that protrude in the axial direction of the deformable portion 31, and a flat surface 32 c that continues to the outer peripheral surface of the deformable portion 31.
  • the upper fixed piece 32 a and the lower fixed piece 32 b are formed in a ring shape concentric with the deformable portion 31.
  • the upper fixing piece 32a is fitted in the concave portion 27c of the connector fitting portion 27 in the housing 2
  • the lower fixing piece 32b is fitted in the fitting concave portion 24a of the inner cylinder portion 24 in the housing 2 (see FIG. 2).
  • the diameter a of the upper portion 31A in the deformed portion 31 of the valve body 3 is preferably 3 to 5 mm.
  • the diameter a is smaller than 3 mm, the diameter a is smaller than the inner diameter of the male connector 100 (see FIG. 8), and the upper portion 31A of the deformable portion 31 may enter the male connector 100.
  • transformation part 31 enters in the male connector 100, the valve body 3 will not be elastically deformed so that the slit 33 may be opened.
  • the distance from the outer peripheral surface 31e of the upper portion 31A to the outer peripheral surface 32d of the fixed portion 32 in the deformed portion 31 is defined as distance b
  • the distance from the outer peripheral surface 31c of the lower portion 31B to the outer peripheral surface 32d of the fixed portion 32 is defined as distance c.
  • the distance from the top surface 31a of the deformable portion 31 to the flat surface 32c of the fixed portion 32 is defined as a distance d.
  • the distances c and d are preferably 0.5 mm or more in order to securely fix the valve body 3 to the housing 2.
  • the distance b is preferably 0.5 to 2.0 mm.
  • the diameters of the upper part 31A and the lower part 31B in the deformed part 31 are equal.
  • the outer diameter L of the fixing portion 32 is preferably 5 to 7 mm. If the outer diameter L is too large, the outer diameter of the housing 2 must also be increased, and the screw portion 27d of the connector fitting portion 27 may not be sized according to the lock portion (luer lock) of the male connector. is there. On the other hand, when the outer diameter L is too small, the opening property at the time of elastic deformation in the valve body 3 is deteriorated. Furthermore, the amount of axial deformation of the valve body 3 must be increased, and the fixing property of the valve body 3 to the housing 2 is deteriorated.
  • the distance T between the thick portions 35A and 35B is preferably 2 to 4.5 mm, and more preferably 2.5 to 3 mm. If the thick portions 35A and 35B are too small, the direction in which the deformable portion 31 deforms cannot be regulated.
  • the distance W between the outer edges in the short direction of the bottom side slit part 38 is preferably 3.5 to 4.5 mm, and is set to be larger than the distance T between the thick parts 35A and 35B.
  • the diameter a of the upper part 31A in the deformed part 31 is about 4.1 mm, and the diameter of the lower part 31B in the deformed part 31 is about 5.1 mm.
  • the distance T between the thick portions 35A and 35B was set to 3.0 mm. Thereby, the maximum length in the longitudinal direction of the slit 33 in the thick portions 35A and 35B is 1.05 mm.
  • the length of the deformed portion 31 in the axial direction is 3 mm, and the depth of the recessed portion 34 in the bottom surface 31b is about 0.7 mm.
  • transformation part 31 will be 2.3 mm.
  • fixed part 32 was about 6.2 mm, and the thickness of the fixing
  • the thickness of the central portion of the deformed portion 31 should be 4.0 mm or less. Is preferred.
  • fixed part 32 shall be 50% or more.
  • FIG. 8 is a cross-sectional view showing a state in which the male connector 100 is connected to the connector 1.
  • the male connector 100 is a part or instrument connected to the male connector connecting portion 6 of the connector 1.
  • Examples of the male connector 100 include a tubular instrument such as a portion for connecting a needle tube of a syringe, a luer taper member, and a sheath.
  • the tip of the male connector 100 is opposed to the male connector connecting portion 6 in the connector 1.
  • the male connector 100 is continuously reduced in diameter toward the tip, it is liquid-tightly fitted to the connector fitting portion 27 of the male connector connecting portion 6.
  • the distal end portion of the male connector 100 is inserted into the cylindrical hole 27 a of the connector fitting portion 27, and the top surface 31 a (see FIG. 2) of the deformable portion 31 in the valve body 3 is pressed with the distal end portion of the male connector 100.
  • the tip of the male connector 100 presses the top surface 31a of the valve body 3
  • the deformed portion 31 of the valve body 3 is elastically deformed downward, and the upper portion 31A is displaced so as to decrease toward the lower portion 31B.
  • the thick portions 35A and 35B regulate the deformation direction of the deformation portion 31, and the deformation portion 31 is deformed so that the slit 33 opens in the width direction.
  • the opening of the slit 33 is promoted, the opening property of the slit 33 can be improved.
  • the insertion length of the male connector 100 with respect to the connector 1 is prescribed
  • the inner surface (surface that forms the slit 33) 31d of the valve body 3 is rotated radially with respect to the axis. While being deformed to face the flow path 13 of the housing 2, the bottom surface 31 b is warped to the side of the valve body 3. The top surface 31 a of the valve body 3 is displaced so as to form a peripheral surface surrounding the shaft center, and an opening 39 communicating with the flow path 13 of the housing 2 is formed. Thereby, the connection of the male connector 100 to the connector 1 is completed.
  • the tip surface and a part of the outer peripheral surface of the male connector 100 are in liquid-tight contact with the elastically deformed deformed portion. Therefore, the liquid tightness between the connector 1 and the male connector 100 can be reliably ensured.
  • the tip of the male connector 100 since a part of the top surface 31 a of the valve body 3 forms the opening 39 and the other part contacts the tip of the male connector 100, the tip of the male connector 100 does not enter the flow path 13. Therefore, the tip of the male connector 100 can be prevented from coming into contact with the liquid in the flow path 13, and the risk of the liquid in the flow path 13 being contaminated can be reduced.
  • tip part of the male connector 100 to the flow path 13 of the housing 2 becomes the length of the axial direction of the opening part 39 formed of the top
  • the tapered surface 24 b is formed on the inner surface of the inner cylinder portion 24 in the male connector connection portion 6.
  • the male connector 100 is pulled out from the connector fitting portion 27. Thereby, the valve body 3 is released from the pressing by the distal end portion of the male connector 100, and is restored to a state in which the male connector connecting portion 6 is closed (see FIG. 2).
  • FIG. 9 is a bottom view of a valve body that is not provided with a thick portion.
  • valve body 300 in which the thick part is not provided will be described with reference to FIG. As shown in FIG. 9, the valve body 300 has the same configuration as the valve body 3 according to an embodiment of the present invention. The valve body 300 is different from the valve body 3 in that the thick portions 35A and 35B are not provided.
  • the lower part 31B of the valve body 300 forms the bottom surface 31b of the deforming part 31.
  • the bottom surface 31b of the deformable portion 31 is provided with a recessed portion 340 that is curved so as to be recessed toward the top surface side.
  • the concave portion 340 has a circular planar shape. Thereby, the thick part is not formed in the both sides of the longitudinal direction of the slit 33.
  • valve body 300 that does not include the thick portion and the valve body 3 that includes the thick portion according to the present invention will be described.
  • the openability of the valve body was evaluated by measuring the opening timing of the valve body when the male connector 100 (see FIG. 8) was inserted into the valve body. That is, if the time until the valve body is opened to a predetermined size when the male connector 100 is inserted into the valve body is short, it is evaluated that the opening performance is good.
  • a valve body 300 without a thick part and valve bodies 3A, 3B, 3C (not shown) provided with thick parts 35A, 35B in the valve body 3 according to the present invention were prepared.
  • the distance T between the thick portions 35A and 35B in the valve body 3A was 2.5 mm
  • the distance T between the thick portions 35A and 35B in the valve body 3B was 3.0 mm
  • the distance T between the thick portions 35A and 35B in the valve body 3C was 3.3 mm.
  • the prepared four valve bodies 3A to 3C, 300 were attached to the housing 2 to assemble the connectors.
  • the male connector 100 (see FIG. 8) was inserted into each valve body of the assembled connector in increments of 0.4 mm, and the clogging value (kPa) at that time was measured.
  • the clogging value is a resistance value against fluid injection when fluid is discharged from the male connector 100. That is, the clogging value (kPa) becomes smaller as the valve body is opened.
  • the horizontal axis of the graph shown in FIG. 10 is the insertion length (mm) of the male connector 100 inserted into the valve body, and the vertical axis is the clogging value (kPa) which is a resistance value against fluid injection.
  • the opening of the valve bodies 3A, 3B, 3C having the thick portions 35A, 35B was started when the insertion length of the male connector 100 became 3.2 mm.
  • the valve body 300 that is not provided with the thick portion is opened.
  • valve body 3A, 3B, 3C which has thick part 35A, 35B opens faster than the valve body 300 in which the thick part is not provided.
  • the thick portions 35A, 35B regulate the direction in which the valve bodies 3A, 3B, 3C are deformed, so that the valve bodies 3A, 3B, 3C are deformed so as to open in the width direction of the slit 33.
  • the valve body 3A, 3B, 3C has a clogging value of about 12 kPa, and the clogging value of the valve bodies 3A, 3B, 3C is stable at about 12 kPa. To do. Therefore, when the insertion length of the male connector 100 becomes 4.4 mm, the valve bodies 3A, 3B, and 3C are deformed into a predetermined opening area, and the flow rate of the fluid passing through the valve bodies A, 3B, and 3C is secured.
  • the valve body 300 has a clogging value of about 12 kPa, and then the clogging value of the valve body 300 is stabilized at about 12 kPa. Therefore, when the insertion length of the male connector 100 becomes 4.8 mm, the valve body 300 is deformed into a predetermined opening area, and the flow rate of the fluid passing through the valve body 300 is ensured.
  • valve bodies 3A, 3B, 3C having the thick portions 35A, 35B are deformed to a predetermined opening area earlier than the valve body 300 not provided with the thick portions, thereby ensuring a fluid flow rate. I understand. Therefore, it was confirmed that when the thick portions 35A, 35B were provided on the valve bodies 3A, 3B, 3C, the opening property when the male connector 100 was inserted was improved.
  • the valve element opens even when the insertion length of the male connector is shallow, so that fluid such as a chemical solution can be reliably injected from the male connector. Moreover, even if the pressure inside the connector is high, the male connector can be easily inserted.
  • the connector according to the embodiment of the present invention has been described including its effects.
  • the connector of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention described in the claims.
  • the thick portions 35 ⁇ / b> A and 35 ⁇ / b> B are formed in a portion that is not the recessed portion 34 by providing the recessed portion (recessed portion) 34.
  • a raised portion may be provided on the bottom surface, and a portion provided with the raised portion may be the thick portion. Even in this case, the deformed portion of the valve body is easily elastically deformed on the side having no thick portion, and is deformed so that the slit opens in the width direction.
  • the top surface side slit portion 37 and the bottom surface side slit portion 38 of the slit 33 are configured to communicate with each other.
  • the top surface side slit portion and the bottom surface side slit portion according to the present invention may not be in communication. That is, the tip of the top surface side slit portion and the tip of the bottom surface side slit portion may be separated by a slight distance (for example, 0.01 to 1.0 mm). In this case, in the process in which the deformed portion of the valve body is pressed against the male connector 100, the tip of the top surface side slit portion and the tip of the bottom surface side slit portion are torn, and both the slit portions communicate with each other.
  • the slit 33 of the valve body 3 is formed from the top surface side slit portion 37 and the bottom surface side slit portion 38.
  • the slit of the valve body according to the present invention may be formed from one slit portion continuous from the top surface to the bottom surface of the valve body.
  • the length in the longitudinal direction of the bottom surface side slit portion 38 in the slit 33 is made longer than the length in the longitudinal direction of the top surface side slit portion 37.
  • the length in the longitudinal direction of the bottom surface side slit portion 38 according to the present invention can be made equal to or less than the length in the longitudinal direction of the top surface side slit portion 37.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Cette invention concerne un raccord qui peut améliorer les propriétés d'ouverture lorsqu'il est lié à un raccord mâle. Le raccord comporte les éléments suivants : un boîtier comportant un conduit dans lequel passe un liquide et une section de liaison à un raccord mâle disposant d'un orifice tubulaire quasiment circulaire s'interconnectant avec le conduit ; et une vanne faite d'un matériau élastique et obturant la section de liaison à un raccord mâle du boîtier. La vanne comporte une face supérieure de forme cylindrique et exposée depuis la section de liaison à un raccord mâle ; une face inférieure située à l'opposé de la face supérieure ; une fente située au moins sur la face supérieure ou la face inférieure ; et une section épaisse prévue des deux côtés dans le sens de la longueur de la fente au niveau de la face inférieure. La section épaisse est obtenue au niveau d'une zone encerclée par le bord externe de la face inférieure et deux lignes se coupant l'une l'autre dans le sens de la longueur de la fente.
PCT/JP2013/058699 2012-03-26 2013-03-26 Raccord WO2013146739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014507893A JP6177762B2 (ja) 2012-03-26 2013-03-26 コネクタ

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JP2012069746 2012-03-26
JP2012-069746 2012-03-26

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WO2013146739A1 true WO2013146739A1 (fr) 2013-10-03

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JP (1) JP6177762B2 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002516160A (ja) * 1998-05-29 2002-06-04 ローレンス・エイ・リン ルア受け具及び流体の移送方法
JP2008301885A (ja) * 2007-06-05 2008-12-18 Fukai Kogyo Kk 混注管
WO2010110140A1 (fr) * 2009-03-27 2010-09-30 テルモ株式会社 Procédé de fabrication d'un élément de vanne, élément de vanne et dispositif médical

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002516160A (ja) * 1998-05-29 2002-06-04 ローレンス・エイ・リン ルア受け具及び流体の移送方法
JP2008301885A (ja) * 2007-06-05 2008-12-18 Fukai Kogyo Kk 混注管
WO2010110140A1 (fr) * 2009-03-27 2010-09-30 テルモ株式会社 Procédé de fabrication d'un élément de vanne, élément de vanne et dispositif médical

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JP6177762B2 (ja) 2017-08-09

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