WO2014041581A1 - Raccord et structure de raccordement de tuyau l'utilisant - Google Patents

Raccord et structure de raccordement de tuyau l'utilisant Download PDF

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Publication number
WO2014041581A1
WO2014041581A1 PCT/JP2012/005752 JP2012005752W WO2014041581A1 WO 2014041581 A1 WO2014041581 A1 WO 2014041581A1 JP 2012005752 W JP2012005752 W JP 2012005752W WO 2014041581 A1 WO2014041581 A1 WO 2014041581A1
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WO
WIPO (PCT)
Prior art keywords
connector
outer cylinder
valve body
tube
end side
Prior art date
Application number
PCT/JP2012/005752
Other languages
English (en)
Japanese (ja)
Inventor
高寛 千田
恭大 木村
敬亮 吉野
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 PCT/JP2012/005752 priority Critical patent/WO2014041581A1/fr
Publication of WO2014041581A1 publication Critical patent/WO2014041581A1/fr

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    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F16L37/35—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the valves having an axial bore
    • 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
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F16L37/34—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve is telescoped over an inner cylindrical wall

Definitions

  • the present invention includes a tube attached to one end side and an outer cylinder having an opening on the other end side, a valve body disposed inside the outer cylinder to open and close the opening of the outer cylinder, An elastic member that urges the valve body toward the opening on the other end side of the outer cylinder; and an inner part of the outer cylinder that is partially connected to the inner surface of the outer cylinder;
  • a connector comprising: a support body supported from one end of the outer cylinder; and a connector formed with a flow path through which the liquid flowing through the tube passes inside the outer cylinder, and a tube connection structure using the connector. is there.
  • valve body biased by the elastic member seals the opening of the outer cylinder to prevent liquid leakage there, while, for example, the tip of a syringe or a pair of
  • the valve body is pushed into the outer cylinder along the axial direction of the outer cylinder by the syringe tip.
  • the liquid from the syringe or other connector or the like can flow to the tube attached to one end of the outer cylinder.
  • a conventional tube connection structure using such a connector there exists what was described in patent document 1 for flowing infusion etc., for example.
  • the syringe tip is inserted into the connector for fixing the connector and the syringe to each other with the syringe tip inserted from the opening of the outer cylinder.
  • the valve body that is pushed in contact with the syringe tip or the like enters the inside of the outer cylinder in a posture shifted with respect to the axial direction of the outer cylinder.
  • the valve body that is urged by the elastic member is not fitted into the opening of the outer cylinder at the expected position, and the opening can be sealed. There was a problem that the liquid could leak due to the inability to do so.
  • An object of the present invention is to solve such problems of the prior art, and the object of the present invention is to push it into the outer cylinder by a syringe tip or a part of another connector.
  • a connector that can ensure the hermetic seal of the opening of the outer cylinder by the valve body and a tube connection structure using the same are provided. There is.
  • the connector of the present invention has a tube attached to one end side and an outer cylinder having an opening on the other end side, and a valve body that is disposed inside the outer cylinder and opens and closes the opening of the outer cylinder.
  • An elastic member that urges the valve body toward the opening on the other end side of the outer cylinder; and an elastic member that is partially connected to the inner surface of the outer cylinder on the inner side of the outer cylinder.
  • a support for supporting the member from one end side of the outer cylinder, and a flow path through which the liquid flowing through the tube passes is formed inside the outer cylinder, the valve body and the A guide member is provided between the elastic member and a guide member that guides the movement of the valve body along the axial direction of the outer cylinder accompanying the opening / closing operation of the valve body with respect to the opening. .
  • the guide member has a leg portion that extends toward the support, and a concave portion in which the leg enters and slides is provided on an outer surface of the support.
  • the respective distal end portions of the leg portions are positioned so as to enter inside the concave portions provided on the outer surface of the support body. Is preferred.
  • the support body is provided with a flow rate adjusting portion having a tapered portion that tapers toward the one end side on one end side of the outer cylinder, and the concave portion provided on the outer surface of the support body is provided with the flow velocity It is preferable to extend to the outer surface of the adjusting portion and to terminate the concave portion on the outer surface of the flow velocity adjusting portion without a step.
  • the tube connection structure of the present invention uses the above connector as a first connector, and is provided at the end of one of the two tubes and the end of the other tube. And a second connector that can be fitted to the first connector.
  • the valve body pushed into the outer cylinder by insertion into the opening of the outer cylinder such as a syringe tip or a part of another connector, opens and closes the opening.
  • the guide member provided between the valve body and the elastic member functions to guide the movement of the valve body along the axial direction of the outer cylinder, so that the valve body always keeps the inner cylinder inside the outer cylinder.
  • the valve body biased by the elastic member securely seals the opening when the syringe tip is not inserted into the opening of the outer cylinder. Therefore, unintentional leakage of the liquid at the opening of the outer cylinder can be prevented.
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 1 shows the connector of FIG. 1 in the state which inserted the syringe front-end
  • FIG. 5 is a development view of the outer surface of the outer cylinder showing guide groove portions provided in the outer cylinder of the connector shown in FIG. 2 and a modification example thereof. It is sectional drawing in alignment with the axial direction of an outer cylinder which shows other embodiment of the connector of this invention. It is a perspective view which decomposes
  • a connector 1 illustrated in FIG. 1 has a tube (not shown) attached to one end side (left side in FIG. 1; left and right are left and right when FIG. 1 is viewed in the correct direction), and the other end side.
  • the outer cylinder 2 having an opening 2a (on the right side in FIG. 1) and the inner cylinder 2 are arranged inside and moved in the axial direction of the outer cylinder 2 (left-right direction in FIG.
  • valve body 3 made of an elastic material such as a rubber material or a resin material that opens and closes 2a, and an elastic member 4 such as a coil spring that biases the valve body 3 toward the opening 2a on the other end side of the outer cylinder 2.
  • elastic member 4 such as a coil spring that biases the valve body 3 toward the opening 2a on the other end side of the outer cylinder 2.
  • a support 5 that is provided inside the outer cylinder 2 and supports the elastic member 4 from one end side of the outer cylinder 2.
  • the outer cylinder 2 is connected to the cylindrical member 6 formed with the opening 2 a on the other end side of the outer cylinder 2, and the cylindrical member 6 on one end side of the outer cylinder 2.
  • the one end side of the tube connecting member 7 which is formed by a tube connecting member 7 attached to be connected to the tube and has a tapered shape with the inner and outer diameters gradually reduced toward one end side of the outer cylinder 2.
  • a plurality of tapered steps 7a are formed on the outer surface of the portion having a constant inner diameter for frictionally engaging the end when inserted into the end of the tube.
  • the tube connected to the tube connecting member 7 is made of urine, blood, ascites / pleural effusion, bile, gastrointestinal fluid, surgical field exudate, surgical field cleaning fluid, cerebrospinal fluid drainage fluid, peritoneal dialysis fluid, and other fluids. It can be used for living bodies such as medical and welfare fluids, and a flow path through which such liquid passes is formed inside the outer cylinder 2.
  • the support 5 is attached to the ring-shaped fixed frame 9 that forms a part of the inner surface of the outer cylinder 2 by the three connecting arms 8.
  • the fixing frame 9 is sandwiched and fixed between the cylindrical member 6 and the tube connecting member 7, and there are one or two connecting arms. Four or more can also be provided.
  • the valve body 3 pushed into the outer cylinder 2 by the syringe tip 101 or the like always moves in the outer cylinder 2 in a direction along the axial direction of the outer cylinder 2. Since the valve body 3 is moved linearly, the above-described swinging motion of the valve body 3 can be prevented. As a result, after the syringe 100 is removed, as shown in FIG. The sealing property of the outer cylinder opening 2a by the valve body 3 fitted in the opening 2a of the cylinder 2 can be ensured.
  • the guide member 10 is formed on a disc-shaped body portion 10a that fits inside the valve body 3 having a cap shape, for example, and a peripheral portion of the body portion 10a.
  • the three legs 10b extending linearly from the support 5 to the support 5 side, and between the connection positions of the three connection arms 8 on the outer surface of the support 5, the three legs
  • Each of the three recesses 5a in which each of 10b enters and slides is formed in a form extending in the axial direction of the outer cylinder 2.
  • tip part of each leg part 10b of the guide member 10 penetrates into each corresponding recessed part 5a somewhat. Let it be positioned.
  • Such a configuration is preferable for realizing a more stable displacement over a long period of time of the valve body 3 that repeatedly moves to one side and the other side in the axial direction of the outer cylinder 2 as the connector 1 is used.
  • one, two, or four or more legs can be provided on the guide member, and the support can be formed with a number of recesses corresponding to the number of legs.
  • the attachment and detachment of the syringe 100 or the like with the connector 1 is repeatedly performed, and the leg portion of the guide member slides on the support body many times. Therefore, the concave portion can be stabilized.
  • a hole 15a extending inward from the surface of the support 15 facing the opening 2a of the outer cylinder 2 is formed in the support, as illustrated in FIG. 4A. be able to.
  • the guide member 20 since the support 15 has two holes 15a, the guide member 20 has two legs 20b corresponding to the number of holes 15a. Yes.
  • the guide member bends outward on the way to the support 35 side and extends to contact the inner surface of the outer cylinder 2, for example, three legs.
  • the guide member 40 is in the axial direction of the outer cylinder 2 of the valve body 3 under sliding contact with the inner surface of the outer cylinder 2 of the leg part 40b. It will guide the linear movement along.
  • the guide member described above can be fitted and fixed inside the cap-shaped valve body 3, and an adhesive agent can be attached to the valve body according to the shape of the valve body. It can also be fixed by use or heat fusion.
  • a positioning rod 11 for attaching a coil spring as the elastic member 4 is provided on the support 5 so as to protrude from the support 5.
  • Such a connector 1 can constitute a tube connection structure by using together with the other connector 51 which makes a pair, as shown in FIG. 6, instead of the syringe 100 described above. That is, the tube connection structure shown in FIG. 6 includes the first connector 1 and the second connector 51 that are fitted together with the connector 1 as a first connector and the other connector 51 as a second connector. In a non-fitted state between the first connector 1 provided at the end of one of the two tubes (not shown) and the second connector 51 provided at the end of the other tube, While preventing the leakage of the liquid which flows through a tube, in the fitting state of the 1st connector 1 and the 2nd connector 51, those tubes are mutually connected so that a liquid can flow.
  • the second connector 51 has one end side (the right side in FIG. 6; the left and right indicate the left and right when FIG. 6 is viewed in the correct direction. 6, the first connector 1 is on the left and the second connector 51 is on the right.), The other tube is attached, and the other end side (left side in FIG. 6) has an opening 52a.
  • An outer cylinder 52 a communication pipe 53 that extends to the other end side of the outer cylinder 52 in parallel with the axial direction of the outer cylinder 52 inside the outer cylinder 52, and communicates the other tube with the outer cylinder 52;
  • the annular valve body 54 which is disposed between the outer cylinder 52 and the outer cylinder 52, and is slidable along the axial direction of the outer cylinder 52.
  • a rigid support member 55 provided along the back surface (the surface facing the right side in FIG. 6);
  • a coil spring provided inside the outer cylinder 52 so as to surround the communication pipe 53 and biasing the annular valve body 54 toward the opening 52 a on the other end side of the outer cylinder 52 via the rigid support member 55. And the like and an elastic body 56.
  • the outer cylinder 52 of the second connector 51 is inserted into the outer cylinder 2 of the first connector 1 with the first connector 1 and the second connector 51 being fitted together.
  • the cylindrical member 57 having a large inner and outer diameter, and a tube connecting member 58 attached to the cylindrical member 57 and integrated with the communication pipe 53, and the outer surface of the small diameter portion of the tube connecting member 58
  • a plurality of tapered steps 58a are formed to frictionally engage the tube when inserted into the other tube.
  • an annular valve body 54 that is biased toward the opening 52a of the outer cylinder 52 by the elastic body 56 in a non-fitted state with the first connector 1 shown in FIG. Since the opening 52a of the outer cylinder 52 is fitted between the outer cylinder 52 and the communication pipe 53 and sealed there, liquid leakage from the opening 52a of the outer cylinder 52 can be prevented.
  • the first connector 1 and the second connector 51 can be fitted together by inserting the first connector 1 into the second connector 51.
  • the movement of each constituent member during such fitting will be described in detail.
  • the tip of the communication pipe 53 of the second connector 51 is shown in FIG.
  • the portion is provided on the other end side of the first connector 1 at the same time as the valve body 3 of the first connector 1 is pushed into the outer cylinder 2 against the urging force of the elastic member 4 on the back side thereof.
  • the inward flange portion 2b around the opening 2a pushes the annular valve body 54 of the second connector 51 into the outer cylinder 52 against the urging force of the elastic body 56 from the back side thereof.
  • each of the valve body 3 of the first connector 1 and the annular valve body 54 of the second connector 51 is opened, so that, for example, urine from the patient's urethra passes through the other tube placed in the urethra and passes through the second tube.
  • the cylindrical member 6 and the tube connection member 7 on the first connector 1 side are sequentially flowed from the through hole 53a provided in the side surface of the communication pipe 53, for example, urine storage It will flow to one tube attached to the bag. Therefore, according to this tube connection structure, one tube and the other tube can be connected to each other so as to allow flow.
  • the valve body 3 is guided by the guide member 10 disposed between the elastic member 4 on the first connector 1 side. Therefore, the inside of the outer cylinder 2 is linearly moved along the axial direction without swinging in the direction orthogonal to the axial direction of the outer cylinder 2. Further, when the first connector 1 is detached from the second connector 51, the first connector 1 side is also removed as the communication pipe 53 of the second connector 51 is pulled out from the opening 2 a of the outer tube 2 of the first connector 1. Under the action of the restoring force of the elastic member 4, the valve element 3 that moves toward the opening 2 a of the outer cylinder 2 linearly moves along the axial direction of the outer cylinder 2 by the guide member 10.
  • the valve body 3 in the non-fitted state of the first connector 1 and the second connector 51, the valve body 3 is properly fitted into the opening 2a of the outer cylinder 2 of the first connector 1 at the expected position. Therefore, the valve body 3 can reliably seal the opening 2a of the outer cylinder 2 and effectively prevent liquid leakage there.
  • the flow rate adjusting unit 14 having a substantially tapered shape in which the outer diameter gradually decreases toward the one end side of the outer cylinder 2, Projecting from the surface.
  • the flow rate adjusting unit 14 causes the liquid flowing through the tube to flow from the other end side of the outer cylinder 2 toward the one end side through the inside of the first connector 1, the cross-sectional area of the flow path is increased by the support 5.
  • the decrease in the flow velocity of the liquid on one end side of the outer cylinder 2 relative to the connection position of the support 5 to the inner surface of the outer cylinder is suppressed, and the solid matter that may be contained in the liquid there is retained. Can be effectively prevented.
  • providing the flow rate adjusting unit 14 is not an essential configuration of the present invention.
  • the outer cylinder 2 of the first connector 1 in order to effectively prevent liquid leakage at the contact portion in the fitted state of the first connector 1 and the second connector 51, the outer cylinder 2 of the first connector 1
  • the annular seal convex portion 12 protruding from the facing surface is attached to the facing surface of the inward flange portion 2b facing the outer cylinder opening 52a of the second connector 51 in a form surrounding the opening 2a, and the second connector 51
  • An annular surface of the annular valve body 54 facing the outer cylinder opening 2a of the first connector 1 is also annularly in contact with the annular seal convex portion 12 on the first connector 1 side in the fitted state.
  • the seal convex portion 54a is formed so as to protrude from the facing surface.
  • Each of these annular seal projections 12 and 54a which can be formed of an elastic material, can be formed integrally with the inward flange portion 2b or the annular valve body 54 of the outer cylinder 2, and the outer cylinder 2 It is also possible to attach to the inward flange portion 2b or the annular valve body 54 as a separate member.
  • the tip surface S2 of the second connector 51 formed by the communication pipe 53 and the annular valve body 54 is a surface other than the annular seal convex portion 54a.
  • a flat surface is preferable in the region.
  • the first connector 1 and the second connector 51 can always be clean without any remaining liquid wiping.
  • the second connector 51 prevents unintended flow of liquid between the rigid support member 55 surrounding the communication pipe 53 and slidingly displaced in the axial direction of the outer cylinder 52 and the communication pipe 53.
  • an O-ring 59 made of a rubber material or the like is arranged in a compressed posture, and the length L in the axial direction of the outer cylinder 52 of the through hole 53a provided in the side wall of the communication pipe 53 is shown in FIG.
  • the distance between the annular valve body 54 and the O-ring 59 is equal to or less than D, and in the fitted state shown in FIG. 7, the insertion length of the communication pipe 53 into the outer cylinder 2 of the first connector 1. It shall be below P.
  • the liquid that has flowed into the second connector 51 from the other tube can flow to the first connector 1 through the through hole 53a of the communication pipe 53, while the non- In the fitted state, the fluid passing through the gap between the communication tube 53 and the rigid support member 55 in the second connector 51 is prevented from flowing toward the elastic body 56 by the O-ring 59, so that the elastic body 56 is formed. It is possible to effectively suppress the liquid from adhering to the coil spring.
  • the valve body 3 of the first connector 1 has a spring accommodating portion 4a for accommodating the elastic member 4 as a coil spring by, for example, recessing the surface on the elastic member 4 side. It is preferable that the elastic member 4 is disposed in contact with the bottom portion of the spring accommodating portion 4a. Accordingly, in the fitted state shown in FIG. 7, the elastic member 4 in the compressed state is accommodated in the spring accommodating portion 4 a, so that the elastic member 4 contacts the liquid flowing through the first connector 1 and the second connector 51. As much as possible, the adhesion of liquid such as urine to the elastic member 4 can be suppressed, and clogging such as urinary calculus to the elastic member 4 and the spring accommodating portion 4a can be prevented.
  • the outer diameter of the elastic member 4 as a coil spring is made sufficiently smaller than the inner diameter of the cylindrical member 6 of the outer cylinder 2, and the inward flange portion 2 a of the outer cylinder 2 is further reduced. Since the inner diameter and the outer diameter of the valve body 3 are smaller, solids such as sand and urinary stone that may be contained in the liquid sufficiently flow between the outer cylinder 2 and the elastic member 4. As a result, the size of the flow path is ensured, so that the solid member can be effectively prevented from being caught and clogged by the elastic member 4.
  • the tube connection structure described in Patent Document 1 described above is mainly for flowing an infusion solution, and in Patent Document 1, the liquid flowing inside contains a solid matter. Therefore, an elastic member is used as a coil spring having an outer diameter equivalent to the inner diameter of the connector. Therefore, when a liquid containing a solid material flows, the solid material is moved to the elastic member. There is a problem of being caught and staying there.
  • the separation distance Ds along the direction is preferably 3 mm or more in consideration of use in a tube connection structure as a urinary catheter having a size of 14 Fr to 16 Fr which is often used.
  • the diameter of the hole at the tip of the urinary catheter having the above size is smaller than 3 mm. Therefore, since solids that may flow in the urinary catheter do not enter the first connector 1, clogging in the first connector 1 can be prevented if the separation distance Ds is at least 3 mm, and smooth. A solid substance can be flowed through.
  • the inner diameter of the outer cylinder 2 of the first connector 1 can be 13 mm or more, and the outer diameter of the guide member can be 7 mm or more.
  • At least one of the elastic member 4 and the elastic body 56 is an elastic body capable of biasing the valve body 3 or the annular valve body 54 toward the other end side of the outer cylinders 2 to 52, for example, A cylindrical rubber member or the like having a cylindrical shape or an inner and outer surface formed in a bellows shape can be used.
  • the elastic body 56 may be formed integrally with a valve body or an annular valve body to form a so-called mechanical spring or the like.
  • the rigid support member 55 on the second connector 51 side is provided along the back surface of the annular valve body 54 as shown in FIGS. Since the annular valve body 54 is urged through the member 55, the annular valve body 54 can be formed of an elastic material based on the back-up by the rigid support member 55 made of a rigid material from the back side of the annular valve body 54. The entire back surface of the annular valve body 54 can be reliably urged by the elastic body 56 to effectively prevent liquid leakage in a non-fitted state. Further, the rigid support member 55 can suppress deformation of the annular valve body 54 and prevent the elastic body 56 from jumping out of the annular valve body 54.
  • the elastic member 4 and the elastic body 56 are provided, the elastic member 4 and the elastic body 56 are attached in the non-fitted state shown in FIG. 6 after the first connector 1 is detached from the second connector 51. Since each of the valve body 3 and the annular valve body 54 seals the respective openings 2a and 52a of the outer cylinders 2 and 52 by the force, the first connector 1 and the second connector 51 are attached and detached. Can be used repeatedly. This is particularly true when the tube connection structure is provided in the middle of a urinary catheter where one end is placed in the patient's bladder and the other end is attached to the urine storage bag.
  • the patient can move away from the urine storage bag and perform so-called rehabilitation and bathing, etc., and urine backflow into the bladder due to the position and condition of the urine storage bag This is preferable in that the risk of developing a urinary tract infection can be eliminated.
  • the connectors 1 and 51 are always fitted together.
  • the elastic body 56 since it is not always necessary to provide the elastic body 56 described above, the elastic body 56 can be omitted from this embodiment.
  • the first connector 1 and the second connector 51 are fitted together so that the connectors 1 and 51 are fixed to each other.
  • the other end side opening 52 a is provided with one or more, preferably two inward projections 60 facing each other, projecting toward the inside of the outer cylinder 52, and
  • a guide groove portion 13 that opens to the other end side of the outer cylinder 2 and extends from the other end side to the one end side of the outer cylinder 2 is formed on the outer surface of the outer cylinder 2 on the first connector 1 side.
  • two can be provided corresponding to the arrangement position and the number of the inward projections 60.
  • each of the guide groove portions 13 shown in FIG. 2 has a groove width slightly wider than the width of the inward projecting portion 60 over the entire length, as shown in the development view of the outer surface of the outer cylinder 2 in FIG. From the other end side (right side in FIG. 9) of the outer cylinder 2 toward one end side (left side in FIG. 9), parallel to the axial direction (left and right direction in FIG. 9) of the outer cylinder 2 along the outer surface of the outer cylinder 2 It extends and bends, for example, at a right angle toward the circumferential direction (vertical direction in FIG. 9) of the outer cylinder 2 at a bent portion 13a in the middle of the extension.
  • the first connector 1 is fixed to the second connector 51 in order to fix the first connector 1 and the second connector 51 in a mutually fitted state.
  • the inward projection 60 is slid from the other end side of the outer tube 2 toward the one end side inside the guide groove portion 13, and the bent portion 13 a is bent in the circumferential direction of the outer tube 2.
  • the inwardly protruding portion is formed on the basis of the restoring force in the axial direction of the elastic member 4 and the elastic body 56 that are compressed. 60 can be fixed by frictionally engaging the groove wall surface of the guide groove portion 13 that extends in the circumferential direction of the outer cylinder 2.
  • the valve body 3 of the first connector 1 that is pushed in contact with the distal end surface of the communication pipe 53 of the second connector 51 is in contact with the first connector 1.
  • the second connector 51 When the second connector 51 is rotated, the second connector 51 may be dragged and twisted by the communication pipe 53 of the second connector 51 and may rotate around the axial direction of the outer cylinder 2.
  • the valve body 3 is displaced along the axial direction of the outer cylinder 2 by the guide by the guide member 10 disposed between them. Therefore, the displacement of the valve body 3 with respect to the axial direction of the outer cylinder 2 when the valve body 3 is displaced in the outer cylinder 2 is prevented. Therefore, when the non-fitted state shown in FIG.
  • the opening 2a can be reliably sealed by the valve body 3 fitted into the opening 2a as expected.
  • the guide groove 13 shown in FIG. 9 (a) it extends parallel to the axial direction of the outer cylinder 2 as shown in FIG. 9 (b), and the circumferential direction of the outer cylinder 2 at the bent portion 23a.
  • the guide groove 23 which is further bent toward the other end of the outer cylinder 2 and terminates, or as shown in FIG. 9C.
  • the tube 2 extends in a posture inclined from the other end side to the one end side with respect to the axial direction, and is formed with three bent portions 33a to 33c on the end portion on the one end side of the outer tube 2. 2 can be provided with a guide groove 33 or the like that is bent in a convex mountain.
  • a click sound can be generated when the inward projection portion 60 gets over the mountain-like bent portions 33a to 33c. 1 and the second connector 51 can be easily recognized, and the bent portions 33a to 33c prevent the first connector 1 from being unintentionally detached from the second connector 51. It also functions to lock them together.
  • the second connector 51 is disconnected from the first connector 1 even when the tube is pulled with a large force. If the connector 1 and 51 are kept in the fitted state, the urinary catheter placed in the patient's bladder may be pulled out of the bladder.
  • deviate from the 1st connector 1 is more preferable than the thing of another form.
  • the bent portions 13a, 23a, 23b, 33a to 33c can be curved portions (not shown).
  • the tube connection structure may come into contact with the patient's skin, for example. However, since it does not damage the skin, it is particularly effective when used for medical and welfare tubes.
  • the inward protruding portion 60 as described above is provided in the opening 52a of the outer cylinder 52 on the second connector 51 side, the first connector 1 and the second connector 51 are in a non-fitted state.
  • a part of the annular valve body 54 that is positioned at the opening 52 a by the urging force of the elastic body 56 in the circumferential direction corresponding to the arrangement position of each inwardly protruding portion 60, A recessed portion 54a into which the inward protruding portion 60 enters can be provided.
  • the displacement of the annular valve body 54 in the outer cylinder 52 together with the rigid support member 55 caused by the compression and restoration of the elastic body 56 on the second connector 51 side is always in the axial direction of the outer cylinder 52.
  • two linear grooves 61 extending in parallel with the axial direction of the outer cylinder 52 are provided on the inner surface of the outer cylinder 52, as shown in FIG.
  • the outer circumferential surface of the rigid support member 55 extends in parallel with the axial direction of the outer cylinder 52 at each circumferential position corresponding to the linear groove 61, and is fitted into the linear groove 61 so that the straight line extends.
  • a fitting convex portion 55 a that slides in the groove 61 can be provided.
  • the first connector 1 illustrated in FIGS. 1 and 6 has a recess 5 a formed on the outer surface of the support 5. Along the axial direction of the cylinder 2, it extends to the outer surface of the flow rate adjusting unit 14 formed integrally with the support 5, and terminates on the outer surface of the flow rate adjusting unit 14 via a step 5 b substantially orthogonal to the axial direction. ing.
  • the size or shape of the solid matter, the step 5b of the recess 5a, and the dimensions of the leg portion 10a of the guide member 10 are eliminated.
  • the guide member 10 having 10b and the valve body 3 fitted in the guide member 10 are prevented from being smoothly displaced along the axial direction, the first connector 1 and the second connector 51 are fitted together. 3 may not open.
  • the recess extending from the outer surface of the support 5 to the outer surface of the flow rate adjusting unit 14 is formed on the outer surface of the flow rate adjusting unit 84 as in the other embodiment shown in FIG. Therefore, it is preferable to terminate without going through a step.
  • the concave portion 75 a formed on the outer surface of the support body 75 has an axial line in the cross section shown along the axial direction up to the outer surface of the tapered flow velocity adjusting portion 84 formed integrally with the support body 75.
  • the width is gradually reduced toward the front end of the flow rate adjustment unit 84 and the outer surface of the flow rate adjustment unit 84. As shown in FIG. 1, it terminates without providing a step 5b orthogonal to the axial direction.
  • the outer surface of the distal end portion of the leg portion 80b that matches the shape of the recess 75a of the guide member 80 is used as the inner surface of the tube connecting member 77 of the outer cylinder 72 or the flow velocity.
  • the surface is parallel to the outer surface of the adjustment unit 84. Accordingly, when the valve body 73 is pushed into the outer cylinder 72 as shown in FIG. 10, the outer surface of the guide member 80 is substantially smooth although there is a slight gap on the outer surface of the flow rate adjusting portion 84. By being connected, the above-described function by the flow rate adjusting unit 84 can be effectively exhibited.
  • examples of the elastic material forming the annular valve body and the valve body include natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber.
  • Various rubber materials such as urethane rubber, silicone rubber, fluoro rubber, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluoro rubber, chlorine
  • Various thermoplastic elastomers such as a modified polyethylene type can be mentioned, and one or more of these can be mixed and used.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Pulmonology (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

L'invention concerne un raccord (1) qui est pourvu : d'un tuyau extérieur (2) dont un côté d'extrémité est fixé à un tuyau et dont l'autre côté d'extrémité présente une section d'ouverture (2a) ; d'un corps de vanne (3) qui est disposé dans le tuyau extérieur (2) et qui ouvre/ferme la section d'ouverture (2a) du tuyau extérieur (2) ; d'un élément élastique (4) qui pousse le corps de vanne (3) vers la section d'ouverture (2a) à l'autre côté d'extrémité du tuyau extérieur (2) ; d'un corps de support (5) qui est fourni en étant partiellement relié à la surface intérieure du tuyau extérieur (2) sur l'intérieur du tube extérieur (2) et qui soutient l'élément élastique (4) à partir de la partie d'extrémité du tuyau extérieur (2). Un conduit, par lequel un liquide qui circule à travers le tuyau passe, est formé sur l'intérieur du tuyau extérieur (2). Le raccord (1) est caractérisé en ce qu'il est installé entre le corps de vanne (3) et l'élément élastique (4) avec un élément de guidage (10) qui guide le mouvement du corps de vanne (3) le long de la direction axiale du tuyau extérieur (2) en accompagnant le mouvement d'ouverture/de fermeture du corps de vanne (3) par rapport à la section d'ouverture (2a).
PCT/JP2012/005752 2012-09-11 2012-09-11 Raccord et structure de raccordement de tuyau l'utilisant WO2014041581A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/005752 WO2014041581A1 (fr) 2012-09-11 2012-09-11 Raccord et structure de raccordement de tuyau l'utilisant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/005752 WO2014041581A1 (fr) 2012-09-11 2012-09-11 Raccord et structure de raccordement de tuyau l'utilisant

Publications (1)

Publication Number Publication Date
WO2014041581A1 true WO2014041581A1 (fr) 2014-03-20

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PCT/JP2012/005752 WO2014041581A1 (fr) 2012-09-11 2012-09-11 Raccord et structure de raccordement de tuyau l'utilisant

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Country Link
WO (1) WO2014041581A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135088U (fr) * 1985-02-12 1986-08-22
JPH11280976A (ja) * 1998-03-31 1999-10-15 Nabco Ltd 継 手
JPH11300292A (ja) * 1998-04-16 1999-11-02 Toyo Eng Corp 流体用継手の洗浄装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135088U (fr) * 1985-02-12 1986-08-22
JPH11280976A (ja) * 1998-03-31 1999-10-15 Nabco Ltd 継 手
JPH11300292A (ja) * 1998-04-16 1999-11-02 Toyo Eng Corp 流体用継手の洗浄装置

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