WO2006087763A1 - コネクタ - Google Patents

コネクタ Download PDF

Info

Publication number
WO2006087763A1
WO2006087763A1 PCT/JP2005/002220 JP2005002220W WO2006087763A1 WO 2006087763 A1 WO2006087763 A1 WO 2006087763A1 JP 2005002220 W JP2005002220 W JP 2005002220W WO 2006087763 A1 WO2006087763 A1 WO 2006087763A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
flange portion
elastic member
connection member
tip
Prior art date
Application number
PCT/JP2005/002220
Other languages
English (en)
French (fr)
Inventor
Atsushi Chiba
Masaru Tougasaki
Original Assignee
Kabushiki Kaisha Top
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 Kabushiki Kaisha Top filed Critical Kabushiki Kaisha Top
Priority to PCT/JP2005/002220 priority Critical patent/WO2006087763A1/ja
Publication of WO2006087763A1 publication Critical patent/WO2006087763A1/ja

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0231—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar
    • 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
    • A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/55—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles sealing elements being incorporated into the joints, e.g. gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
    • F16L13/161—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
    • F16L13/163—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling one collar being bent over the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
    • 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
    • A61M2039/1044—Verifying the connection, e.g. audible feedback, tactile feedback, visual feedback, using external light sources
    • 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
    • A61M39/1055—Rotating or swivel joints
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Definitions

  • the present invention is a joint that is rotatably mounted on a cylindrical tip portion of a barrel tip of a syringe or an end portion of a cylindrical member such as a connection member having a plurality of three-way stopcocks and used for connection to other members.
  • the present invention relates to a synthetic resin connector.
  • a connector that is rotatably attached to an end portion of a cylindrical member and connects members used for medical practice.
  • the connector for example, as shown in FIG. 4, there is a connector 41 that is rotatably attached to a tube tip portion 43 formed at the tip of a barrel 42.
  • the connector 41 is made of a synthetic resin, and includes a luer taper portion 44 connected to the tube tip portion 43 of the barrel 42, and a lock tube 45 extending along the axial direction of the luer taper portion 44. .
  • the lock cylinder 45 includes a connecting member 46 whose rear end force also extends in the direction of the barrel 42, and a thread 47 is formed on the inner peripheral surface.
  • the connector 41 has the front end portion of the connecting member 46 in a state where the O-ring 48 is sandwiched between the rear end portion of the lock tube 45 and the flange portion 47 provided on the tube tip portion 43.
  • the adhesion can be performed by a method using an adhesive such as a solvent, or a method such as ultrasonic welding or high-frequency induction heating welding.
  • the conventional connector 41 rotates the connector 41 itself while keeping the barrel 42 and other members such as a connecting member including a plurality of three-way cocks connected to the barrel 42 stationary without rotating each other. By making it, it can connect easily.
  • the connector 41 has different preferences for ease of rotation depending on the user, and since the engagement with the flange portion 47 of the cap nut-like member 49 is weak and can be easily rotated, the engagement is strong. Even those who prefer a hard rotation vary. The strength of engagement of the cap nut-like member 49 with respect to the flange portion 47 can be adjusted by the spring of the O-ring 48 held between them. [0006] In the conventional connector 41, however, the connecting member 46 is bonded to the cap nut-like member 49, so that it is difficult to adjust the rotation hardness due to the spring of the O-ring 48. , And there are inconveniences. Further, in the conventional connector 41, since the connecting member 46 and the cap nut-like member 49 are bonded, there is a disadvantage that the configuration for mounting on the tube tip portion 43 must be increased.
  • the present invention eliminates the inconvenience that can be applied, and can be attached to the tubular member without being bonded, and the hardness of rotation can be easily adjusted. It is an object of the present invention to provide a connector made of a synthetic resin that can reduce the size of the structure for mounting the load. Means for solving the problem
  • a connector according to the present invention is made of a synthetic resin, a lock cylinder having a thread formed on an inner peripheral surface, and a cylinder extending rearward from the rear end of the lock cylinder
  • a connecting member and an elastic member holding portion provided on the inner peripheral side of the connecting member, and the elastic member held by the elastic member holding portion is disposed on the front surface of the flange portion formed in the cylindrical member.
  • the connection member In the connector that is rotatably attached to the cylindrical member in a pressed state, the connection member is fixed to the back surface of the flange portion and is rotatably attached to the cylindrical member.
  • the cylindrical member extending rearward of the rear end portion of the lock cylinder in a state where the elastic member held by the elastic member holding portion is pressed against the front surface of the flange portion of the cylindrical member.
  • a connecting member is attached to the flange portion and is rotatably clamped to the back surface of the flange. Therefore, by changing the level of the force-clamping prevention, the elastic force of the elastic member can be easily adjusted, and the hardness of rotation (ease of rotation) can be easily adjusted during manufacturing.
  • the connecting member is clamped to the back surface of the flange portion, and it is not necessary to bond the connecting member to the cap nut-like member. can do.
  • the connector of the present invention since it can be attached to the cylindrical member without bonding, the inside of the cylindrical member is easily visible, and the material is suitable for bonding. It is advantageous in terms of energy because the chilling force is also a cold process.
  • the connector of the present invention includes a luer taper portion connected to the tubular member, and the mouthpiece tube extends along the axial direction of the luer taper portion.
  • the connector according to the present invention has such a configuration, so that when the end of another member is screwed into a thread formed on the inner peripheral surface of the lock cylinder, the luer taper portion is the other. This is convenient because it is inserted into the end of the member.
  • an O-ring can be used as the elastic member.
  • a synthetic resin member such as an injection molded body of thermoplastic resin is to maintain its shape after the molten resin is injected and solidified into a predetermined shape in the mold. It has the following properties. Therefore, even if the synthetic resin member is deformed by applying stress, it returns to its original form immediately or over time when the stress is removed. Even if it is deformed, it may return to its original shape when heated after deformation. On the other hand, if the synthetic resin member is irreversibly deformed, a crack is generated, resulting in stress failure.
  • the buckling deformation is plastic deformation, and since it does not return to its original shape even when heat is applied, the buckled deformation portion does not reach stress fracture. It has sufficient strength to engage with other members.
  • the connecting member is externally fitted to the flange portion, and the tip of the connecting member is buckled and deformed to the tubular member side within a range where stress destruction does not occur. It is characterized by being clamped to the flange portion by the tip of the bent connecting member.
  • the connecting member is buckled and deformed by a roller that is rotatably supported by the roller and being continuously pressed for a predetermined time with a predetermined pressure while rotating.
  • Examples of the synthetic resin capable of buckling deformation include olefin-based resins, acrylonitrile butadiene-styrene copolymer resins, polystyrene, styrene copolymers, acrylic resins, polycarbonate, polyvinyl chloride, polymethyl methacrylate, Mention may be made of polyamides, polyacetals, polyethylene terephthalates, fluorine resins, and one type of resin that also has a group strength that can be a thermoplastic polyurethane.
  • the cylindrical member to which the connector of the present invention is attached may be a connecting member having a plurality of three-way stopcocks, or may be a cylindrical tip formed at the barrel tip of a syringe.
  • the cylindrical member is a tube tip portion formed at the tip of the barrel, the tube tip portion is another member such as a needle member of an injection needle or a connection member having a plurality of three-way stopcocks via the connector. It is possible to connect with.
  • FIG. 1 is an explanatory cross-sectional view showing the configuration of the connector of the present embodiment
  • FIGS. 2 and 3 are explanatory cross-sectional views showing a method of mounting the connector of the present embodiment.
  • the connector 1 of the present embodiment is made of polycarbonate, and is rotatably attached to a tube tip portion 3 formed at the barrel 2 tip end.
  • the connector 1 includes a luer taper portion 4 connected to the tube tip portion 3, a lock tube 5 extending along the axial direction of the luer taper portion 4, and a rear end portion force of the lock tube 5 also in the rear (barrel 2 direction).
  • a cylindrical connecting member 6 extending to the center.
  • a thread 7 is formed on the inner peripheral surface of the lock cylinder 5, and an elastic member holding portion 8 is provided on the inner peripheral side of the connection member 6.
  • the elastic member holding part 8 has a shape in which the luer taper part 4 and the lock cylinder 5 are connected to each other at the rear end part, and the barrel 2 on the opposite side to the luer taper part 4 and the lock cylinder 5 An O-ring 9 as an elastic member is fitted and held on the side. Further, on the inner peripheral side of the elastic member holding portion 8, a tube tip accommodating portion 10 is formed which accommodates the tube tip portion 3 of the barrel 2 and is accommodated in the luer taper portion 4. [0024] A flange portion 11 is formed on the tube tip portion 3 of the barrel 2 so as to protrude to the outer peripheral side.
  • the connector 1 is externally fitted to the flange portion 11 with the O-ring 9 held by the elastic member holding portion 8 being pressed between the elastic member holding portion 8 and the front surface of the flange portion 11.
  • the front end portion 6a of the connection member 6 is clamped to the back side of the flange portion 11 and is rotatably attached to the tube tip portion 3.
  • the tube tip portion 3 is inserted into the tube tip housing portion 10 of the connector 1, and the O-ring 9 held by the elastic member holding portion 8 is pressed against the front surface of the flange portion 11.
  • the elastic member is held between the holding portion 8 and the flange portion 11.
  • the connecting member 6 is externally fitted to the flange portion 11, and the thin tip portion 6 a of the connecting member 6 is protruded rearward of the flange portion 11.
  • the rotating roller 12 is pressed against the front end portion 6a protruding rearward of the flange portion 11.
  • the rotary roller 12 is pressed against the tip 6a by an air cylinder (not shown) provided in parallel with the axial direction of the connector 1.
  • the rotating roller 12 is rotatably supported by being coaxially supported by the air cylinder or the like.
  • the rotating roller 12 has a tapered portion 12a at the tip, and the tapered portion 12a is pressed while abutting against the tip 6a.
  • the rotating roller 12 can apply a stress uniformly to the distal end portion 6a of the connecting member 6 and can be buckled and deformed in a range that does not cause stress fracture.
  • the connector 1 is rotated around the axis at 12-200 rpm while the rotating roller 12 is pressed at 0.4 MPa to 0.6 MPa against the tip portion 6 a having a thickness of 1.2 mm.
  • the distal end portion 6a of the connecting member 6 can be buckled and deformed toward the tube tip portion 3 in about 1.2 seconds.
  • connection member 6 is caulked to the flange portion 11, so that no other member is required for mounting on the tube tip portion 3, and a configuration for mounting is provided. Miniaturization can do.
  • the connector 1 for example, when connecting the barrel 2 and the connecting member 13 having a plurality of three-way cocks (not shown), first, as shown in FIG. The flange portion 13 a formed at the end of the lock cylinder 5 is inserted into the inner peripheral side of the lock cylinder 5. Then, by rotating the connector 1 while the barrel 2 and the connection member 13 are stationary, the flange portion 13a of the connection member 13 is screwed into the screw 7 formed on the inner peripheral surface of the lock cylinder 5. Thus, the barrel 2 and the connecting member 13 can be connected.
  • the connector 1 is used because the spring force of the O-ring 9 is adjusted when the tip portion 6a of the connection member 6 is caulked to the back side of the flange portion 11 as described above. Can be rotated at a desired hardness.
  • the connector 1 is attached to the tube tip 3 of the barrel 2 .
  • the connector 1 is attached to other tubular members such as a connecting member having a plurality of three-way stopcocks. It may be worn.
  • the connector 1 is described as being made of polycarbonate, such as force olefin resin, acrylonitrile butadiene styrene copolymer resin, polystyrene, styrene copolymer, acrylic resin, polysalt resin, poly salt resin. It may be composed of other buckling-deformable synthetic resins such as methyl metatalylate, polyamide, polyacetal, polyethylene terephthalate, fluorine resin, and thermoplastic polyurethane.
  • FIG. 1 is an explanatory cross-sectional view showing a configuration example of a connector according to the present invention.
  • FIG. 2 is an explanatory cross-sectional view showing a mounting method of the connector shown in FIG.
  • FIG. 3 is an explanatory cross-sectional view showing a method of mounting the connector shown in FIG.
  • FIG. 4 is an explanatory cross-sectional view showing a configuration example of a conventional connector.

Abstract

　筒状部材に装着する際に回転の硬さを容易に調整でき、装着するための構成を小型化できる合成樹脂製のコネクタを提供する。 　合成樹脂からなり、螺条７が形成されたロック筒５と、ロック筒５の後端部から後方に延在する円筒状の接続部材６と、弾性部材保持部８とを備え、弾性部材９を筒状部材３に形成されたフランジ部１１の前面に押圧した状態で筒状部材３に回転自在に装着される。接続部材６は、フランジ部１１の背面にかしめ止めされている。筒状部材３に接続されるルアーテーパー部４を備え、ロック筒５は、ルアーテーパー部４の軸方向に沿って延在している。弾性部材９はＯリングである。接続部材６は、回転自在に軸支されたローラ１２が回転しながら所定の加圧力で所定の時間継続して押圧されて、フランジ部１１に外嵌された先端部が応力破壊に至らない範囲で筒状部材３側に座屈変形せしめられ、フランジ部１１にかしめ止めされる。

Description

明 細 書
コネクタ
技術分野
[0001] 本発明は、シリンジのバレル先端の筒先部や、複数の三方活栓を備える接続部材 等の筒状部材の端部に回転自在に装着されて、他の部材との接続に用いられる合 成榭脂製のコネクタに関するものである。
背景技術
[0002] 従来、筒状部材の端部に回転自在に装着されて、医療行為に用いられる部材同士 を接続するコネクタが知られている。前記コネクタとして、例えば図 4に示すように、バ レル 42先端に形成された筒先部 43に回転自在に装着されるコネクタ 41がある。
[0003] 前記コネクタ 41は、合成樹脂からなり、バレル 42の筒先部 43に接続されるルアー テーパー部 44と、ルアーテーパー部 44の軸方向に沿って延在するロック筒 45とを 備えている。ロック筒 45は、後端部力もバレル 42方向に延在する接続部材 46を備え ており、内周面には螺条 47が形成されている。そして、コネクタ 41は、ロック筒 45の 後端部と、筒先部 43に設けられたフランジ部 47との間に Oリング 48を挟持した状態 で、前記接続部材 46の先端部が、フランジ部 47の背面側に回転自在に装着された 合成樹脂製の袋ナット状部材 49の先端部に接着されることにより、筒先部 43に回転 自在に装着されている。前記接着は、溶剤等の接着剤による方法、または超音波溶 着、高周波誘導加熱溶着等の方法により行うことができる。
[0004] 前記従来コネクタ 41は、バレル 42と、該バレル 42に接続される複数の三方活栓を 備える接続部材等の他部材とを、互いに回転させることなく静止させたまま、コネクタ 41自体を回転させることにより、容易に接続することができる。
[0005] ところで、前記コネクタ 41は、使用者によって回転させやすさに対する好みが異なり 、袋ナット状部材 49のフランジ部 47に対する係合が弱く容易に回転できることを好む 者から、前記係合が強く回転が硬いことを好む者まで様々である。前記袋ナット状部 材 49のフランジ部 47に対する係合の強さは、両者に挟持される Oリング 48の弹発カ により調整することができる。 [0006] し力しながら、前記従来のコネクタ 41では、接続部材 46を袋ナット状部材 49と接着 して 、るので、 Oリング 48の弹発カによる回転の硬さを調整することが難 、と 、ぅ不 都合がある。また、前記従来のコネクタ 41では、接続部材 46と袋ナット状部材 49とを 接着しているので、前記筒先部 43に装着するための構成が大型化せざるを得ないと いう不都合がある。
[0007] さらに、接続部材 46を袋ナット状部材 49と接着する際に、溶剤等の接着剤による 場合には接着部に気泡が生じやすいため輸液回路に対する気泡の混入を視認しに くくなる、超音波溶着の場合にはォレフイン系榭脂には適用が難しい、高周波誘導加 熱溶着の場合には熱間加工となり冷却工程を必要とするためエネルギー効率が低く なる、等の不都合がある。
発明の開示
発明が解決しょうとする課題
[0008] 本発明は、力かる不都合を解消して、筒状部材に装着する際に接着によらずに装 着することができ、回転の硬さの調整を容易に行うことができて、し力も装着するため の構成を小型化することができる合成樹脂製のコネクタを提供することを目的とする。 課題を解決するための手段
[0009] かかる目的を達成するために、本発明のコネクタは、合成樹脂からなり、内周面に 螺条が形成されたロック筒と、該ロック筒の後端部から後方に延在する円筒状の接続 部材と、該接続部材の内周側に設けられた弾性部材保持部とを備え、該弾性部材保 持部に保持された弾性部材を筒状部材に形成されたフランジ部の前面に押圧した 状態で該筒状部材に回転自在に装着されるコネクタにおいて、該接続部材は、該フ ランジ部の背面に力しめ止めされて該筒状部材に回転自在に装着されていることを 特徴とする。
[0010] 本発明のコネクタでは、弾性部材保持部に保持された弾性部材を筒状部材のフラ ンジ部の前面に押圧した状態で、ロック筒の後端部力 後方に延在する円筒状の接 続部材が、該フランジ部に装着され、該フランジの背面に回転自在に力しめ止めされ ている。従って、力しめ止めの程度を変えることにより、弾性部材の弹発力の調整が 容易であり、回転の硬さ（回転させやすさ）を製造時に容易に調整することができる。 [0011] また、本発明のコネクタによれば、前記接続部材が前記フランジ部の背面に力しめ 止めされ、該接続部材を袋ナット状部材と接着する必要がないので、全体の構成を 小型化することができる。
[0012] さらに、本発明のコネクタによれば、前記筒状部材に接着によらずに装着すること ができるので、該筒状部材の内部の視認が容易であり、材料が接着に適したものに 限定されることがなぐし力も冷間工程であるのでエネルギー的にも有利である。
[0013] 本発明のコネクタは、前記筒状部材に接続されるルアーテーパー部を備え、前記口 ック筒は、該ルアーテーパー部の軸方向に沿って延在していることが好ましい。本発 明のコネクタは、このような構成を備えることにより、他の部材の端部が前記ロック筒の 内周面に形成された螺条に螺合されたときに、前記ルアーテーパー部が他の部材の 端部に挿入されることとなり好都合である。
[0014] 本発明のコネクタにおいて、前記弾性部材としては、例えば Oリングを用いることが できる。
[0015] ところで、一般に、熱可塑性榭脂の射出成形体等の合成樹脂製部材は、溶融化状 態の樹脂が射出されて金型内で所定形状に凝固した後は、その形状を維持しようと する性質がある。従って、前記合成樹脂製部材に応力を加えて変形させても、応力 が取り去られると直ちに、あるいは経時的に原形に復帰する。また、一応変形してい ても、変形後に加熱されると、原形に復帰することがある。一方、前記合成樹脂製部 材を不可逆的に変形させようとすると、クラックを生じて応力破壊に至ってしまう。
[0016] しかし、合成樹脂によっては、応力を加えたときに、まず座屈変形を起こし、次いで クラックを起こして応力破壊に至るものが存在することが知られており、本出願人は、 このような合成樹脂の座屈変形を利用して一方の部材を他方の部材に接続する方 法について既に特許出願している（日本国特開 2001— 105502参照)。
[0017] 前記合成樹脂においては、前記座屈変形は、塑性変形であり、熱を加えても原形 に復帰することはなぐし力も前記座屈変形した部分は応力破壊には至っていないの で、他部材と係合するに十分な強度を備えている。
[0018] そこで、本発明のコネクタは、前記接続部材が、前記フランジ部に外嵌され、該接 続部材の先端を応力破壊に至らない範囲で前記筒状部材側に座屈変形せしめ、座 屈変形した該接続部材の先端により該フランジ部に力しめ止めされていることを特徴 とする。前記接続部材は、回転自在に軸支されたローラが回転しながら所定の加圧 力で所定の時間継続して先端に押圧されることにより座屈変形される。
[0019] 前記座屈変形可能な合成樹脂としては、ォレフィン系榭脂、アクリロニトリル ブタジ ェンースチレン共重合榭脂、ポリスチレン、スチレンコポリマー、アクリル榭脂、ポリ力 ーボネート、ポリ塩化ビニル、ポリメチルメタタリレート、ポリアミド、ポリアセタール、ポリ エチレンテレフタレート、フッ素榭脂、熱可塑性ポリウレタン力もなる群力も選択される 1種の榭脂を挙げることができる。
[0020] 本発明のコネクタが装着される前記筒状部材としては、複数の三方活栓を備える接 続部材であってもよぐシリンジのバレル先端に形成された筒先部であってもよい。前 記筒状部材が前記バレル先端に形成された筒先部である場合、該筒先部は前記コ ネクタを介して、注射針の針元や、複数の三方活栓を備える接続部材等の他の部材 と接続することがでさる。
発明を実施するための最良の形態
[0021] 次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明 する。図 1は本実施形態のコネクタの構成を示す説明的断面図、図 2, 3は本実施形 態のコネクタの装着方法を示す説明的断面図である。
[0022] 図 1に示すように、本実施形態のコネクタ 1は、ポリカーボネートからなり、バレル 2先 端に形成された筒先部 3に回転自在に装着されている。コネクタ 1は、筒先部 3に接 続されるルアーテーパー部 4と、ルアーテーパー部 4の軸方向に沿って延在するロッ ク筒 5と、ロック筒 5の後端部力も後方 (バレル 2方向）に延在する円筒状の接続部材 6とを備えている。ロック筒 5の内周面には螺条 7が形成されており、接続部材 6の内 周側には弾性部材保持部 8が設けられている。
[0023] 弾性部材保持部 8は、ルアーテーパー部 4とロック筒 5とを互いの後端部で接続す る形となっており、ルアーテーパー部 4、ロック筒 5とは反対側のバレル 2側に弾性部 材としての Oリング 9が嵌着されて保持される。また、弾性部材保持部 8の内周側には 、バレル 2の筒先部 3が収容されて、ルアーテーパー部 4に収容される筒先収容部 1 0が形成されている。 [0024] バレル 2の筒先部 3には、外周側に突出するフランジ部 11が形成されている。そし て、コネクタ 1は、弾性部材保持部 8に保持された Oリング 9が弾性部材保持部 8とフ ランジ部 11の前面との間で押圧された状態で、フランジ部 11に外嵌された接続部材 6の先端部 6aがフランジ部 11の背面側に力しめ止めされて、筒先部 3に回転自在に 装着されている。
[0025] コネクタ 1をバレル 2の筒先部 3に装着するときには、図 2に示すように、まず、 Oリン グ 9をコネクタ 1の弾性部材保持部 8に嵌着して保持させ、次 、で Oリング 9を保持し ているコネクタ 1を筒先部 3に装着する。
[0026] この結果、図 3に示すように、筒先部 3はコネクタ 1の筒先収容部 10に挿入され、弹 性部材保持部 8に保持された Oリング 9はフランジ部 11の前面に押圧され、弾性部材 保持部 8とフランジ部 11とにより挟持される。また、接続部材 6はフランジ部 11に外嵌 され、接続部材 6の肉薄の先端部 6aがフランジ部 11の後方に突出せしめられる。
[0027] そこで、次に、フランジ部 11の後方に突出した先端部 6aに、回転ローラ 12を押圧 する。図 3において、回転ローラ 12はコネクタ 1の軸方向と平行に備えられたエアシリ ンダ（図示せず)等により、先端部 6aに押圧される。ここで、回転ローラ 12は前記エア シリンダ等に同軸に軸支されて回転自在となっており、コネクタ 1を軸周りに回転させ ることにより、コネクタ 1と供回りしながら先端部 6aに押圧される。また、回転ローラ 12 は先端にテーパー部 12aが形成されており、テーパー部 12aが先端部 6aに当接しな がら押圧する。この結果、回転ローラ 12は、接続部材 6の先端部 6aに均一に応力を 付加して、応力破壊に至らな 、範囲で座屈変形せしめることができる。
[0028] 本実施形態では、例えば、厚さ 1. 2mmの先端部 6aに対して回転ローラ 12を 0. 4 一 0. 6MPaで押圧しながら、コネクタ 1を軸周りに 12— 200rpmで回転させることに より、約 1. 2秒で接続部材 6の先端部 6aを筒先部 3側に座屈変形せしめることができ る。このとき、前記座屈変形の条件を適切に選択することにより、 Oリング 9の弹発カ を調整することができ、先端部 6aのフランジ部 11に対する係合の強さを容易に調整 することができる。
[0029] コネクタ 1によれば、接続部材 6の先端部 6aがフランジ部 11にかしめ止めされるの で、筒先部 3に装着するために他の部材を必要とせず、装着のための構成を小型化 することができる。
[0030] また、コネクタ 1によれば、例えば、バレル 2と複数の三方活栓（図示せず)を備える 接続部材 13とを接続する場合には、まず、図 1に示すように、接続部材 13の端部に 形成されたフランジ部 13aをロック筒 5の内周側に挿入する。そして、バレル 2と接続 部材 13とを静止させたまま、コネクタ 1を回転させること〖こより、接続部材 13のフラン ジ部 13aをロック筒 5の内周面に形成された螺条 7に螺合させて、バレル 2と接続部材 13とを接続することができる。
[0031] このとき、コネクタ 1は前述のように接続部材 6の先端部 6aがフランジ部 11の背面側 にかしめ止めされる際に、 Oリング 9の弹発力が調整されているので、使用者の所望 の硬さで回転させることができる。
[0032] 尚、本実施形態では、コネクタ 1がバレル 2の筒先部 3に装着される場合について 説明しているが、コネクタ 1は複数の三方活栓を備える接続部材等、他の筒状部材に 装着されるものであってよい。また、本実施形態では、コネクタ 1はポリカーボネートか らなるものとして説明している力 ォレフィン系榭脂、アクリロニトリル ブタジエンース チレン共重合榭脂、ポリスチレン、スチレンコポリマー、アクリル榭脂、ポリ塩ィ匕ビュル 、ポリメチルメタタリレート、ポリアミド、ポリアセタール、ポリエチレンテレフタレート、フ ッ素榭脂、熱可塑性ポリウレタン等の他の座屈変形可能な合成樹脂からなるものであ つてもよい。
図面の簡単な説明
[0033] [図 1]本発明のコネクタの一構成例を示す説明的断面図。
[図 2]図 1に示すコネクタの装着方法を示す説明的断面図。
[図 3]図 1に示すコネクタの装着方法を示す説明的断面図。
[図 4]従来のコネクタの一構成例を示す説明的断面図。
符号の説明
[0034] 1 · · ·コネクタ、 2…バレル、 3…筒状部材 (筒先部）、 4…ルアーテーパー部、 5 …ロック筒、 6…接続部材、 7…螺条、 8…弾性部材保持部、 9…弾性部材 (O リング）、 11 · · ·フランジ部、 12· · ·ローラ。

Claims

請求の範囲
[1] 合成樹脂からなり、内周面に螺条が形成されたロック筒と、該ロック筒の後端部から 後方に延在する円筒状の接続部材と、該接続部材の内周側に設けられた弾性部材 保持部とを備え、該弾性部材保持部に保持された弾性部材を筒状部材に形成され たフランジ部の前面に押圧した状態で該筒状部材に回転自在に装着されるコネクタ において、
該接続部材は、該フランジ部の背面に力しめ止めされて該筒状部材に回転自在に 装着されて ヽることを特徴とするコネクタ。
[2] 前記筒状部材に接続されるルアーテーパー部を備え、前記ロック筒は、該ルアー テーパー部の軸方向に沿って延在していることを特徴とする請求項 1記載のコネクタ
[3] 前記弾性部材は Oリングであることを特徴とする請求項 1記載のコネクタ。
[4] 前記接続部材は、前記フランジ部に外嵌され、該接続部材の先端を応力破壊に至 らな ヽ範囲で前記筒状部材側に座屈変形せしめ、座屈変形した該接続部材の先端 により該フランジ部に力しめ止めされていることを特徴とする請求項 1記載のコネクタ
[5] 前記接続部材は、回転自在に軸支されたローラが回転しながら所定の加圧力で所 定の時間継続して先端に押圧されることにより座屈変形されていることを特徴とする 請求項 1記載のコネクタ。
[6] 前記合成樹脂は、ォレフィン系榭脂、アクリロニトリル ブタジエン スチレン共重合 榭脂、ポリスチレン、スチレンコポリマー、アクリル榭脂、ポリカーボネート、ポリ塩化ビ -ル、ポリメチルメタタリレート、ポリアミド、ポリアセタール、ポリエチレンテレフタレート 、フッ素榭脂、熱可塑性ポリウレタン力 なる群力 選択される 1種の榭脂であることを 特徴とする請求項 1記載のコネクタ。
[7] 前記筒状部材は、シリンジのバレル先端に形成された筒先部であることを特徴とす る請求項 1記載のコネクタ。
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WO2014072440A1 (de) * 2012-11-09 2014-05-15 Vetter Pharma-Fertigung GmbH & Co. KG Spritzenverschluss
CN104061381A (zh) * 2013-03-21 2014-09-24 廖玉柱 不同管径的管材结合结构
CN104288855A (zh) * 2013-07-15 2015-01-21 贝克顿迪金森法国公司 用于药剂输送装置的适配器以及用于在药剂输送装置上安装所述适配器的方法
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US20180104422A1 (en) * 2012-03-28 2018-04-19 Terumo Kabushiki Kaisha Syringe
US11504485B1 (en) * 2021-08-18 2022-11-22 Cellular Vehicles, Inc. Cellular therapy infusion devices, systems, and methods for use

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WO2010140019A1 (en) * 2009-06-03 2010-12-09 Becton Dickinson France Improved luer lock adaptor
CN102458538A (zh) * 2009-06-03 2012-05-16 贝克顿迪金森法国公司 改进型鲁尔锁适配器
US9919113B2 (en) 2009-06-03 2018-03-20 Becton Dickinson France Luer lock adaptor
CN102458538B (zh) * 2009-06-03 2016-10-19 贝克顿迪金森法国公司 适配器、药物输送装置及将适配器安装到药物输送装置上的方法
WO2010150042A1 (en) * 2009-06-24 2010-12-29 Becton Dickinson France Improved luer connector
US20120179108A1 (en) * 2009-06-24 2012-07-12 Becton Dickinson France Luer connector
CN102802706A (zh) * 2009-06-24 2012-11-28 贝克顿迪金森法国公司 改进的路厄连接器
US9017291B2 (en) 2009-06-24 2015-04-28 Becton Dickinson France Luer connector
US10272212B2 (en) * 2012-03-28 2019-04-30 Terumo Kabushiki Kaisha Syringe
US20180104422A1 (en) * 2012-03-28 2018-04-19 Terumo Kabushiki Kaisha Syringe
US9033937B2 (en) 2012-08-20 2015-05-19 Transcoject Gmbh Syringe
EP2700426A1 (de) * 2012-08-20 2014-02-26 Transcoject GmbH Spritze mit drehbarer Gewindehülse
US9925340B2 (en) 2012-11-09 2018-03-27 Vetter Pharma-Fertigung GmbH & Co. KG Syringe closure
WO2014072440A1 (de) * 2012-11-09 2014-05-15 Vetter Pharma-Fertigung GmbH & Co. KG Spritzenverschluss
RU2661024C2 (ru) * 2012-11-09 2018-07-11 Феттер Фарма-Фертигунг Гмбх Унд Ко. Кг Колпачок для шприца
CN104061381B (zh) * 2013-03-21 2016-05-18 廖玉柱 不同管径的管材结合结构
CN104061381A (zh) * 2013-03-21 2014-09-24 廖玉柱 不同管径的管材结合结构
EP2823851A3 (en) * 2013-06-19 2015-09-02 Mouldex Co., Ltd. Rotatable connector for medical use
CN104288855A (zh) * 2013-07-15 2015-01-21 贝克顿迪金森法国公司 用于药剂输送装置的适配器以及用于在药剂输送装置上安装所述适配器的方法
US10258540B2 (en) 2013-07-15 2019-04-16 Becton Dickinson France Adaptor for a drug delivery device and method for mounting said adaptor thereon
US11504485B1 (en) * 2021-08-18 2022-11-22 Cellular Vehicles, Inc. Cellular therapy infusion devices, systems, and methods for use

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