WO1999047202A1 - Catheter connector and balloon catheter - Google Patents

Catheter connector and balloon catheter Download PDF

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Publication number
WO1999047202A1
WO1999047202A1 PCT/JP1999/001346 JP9901346W WO9947202A1 WO 1999047202 A1 WO1999047202 A1 WO 1999047202A1 JP 9901346 W JP9901346 W JP 9901346W WO 9947202 A1 WO9947202 A1 WO 9947202A1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
connector
balloon
catheter connector
proximal end
Prior art date
Application number
PCT/JP1999/001346
Other languages
French (fr)
Japanese (ja)
Inventor
Akira Sekido
Shinichi Miyata
Takashi Kawabata
Original Assignee
Nippon Zeon Co., Ltd.
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 Nippon Zeon Co., Ltd. filed Critical Nippon Zeon Co., Ltd.
Publication of WO1999047202A1 publication Critical patent/WO1999047202A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0097Catheters; Hollow probes characterised by the hub
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02Holding devices, e.g. on the body
    • A61M2025/024Holding devices, e.g. on the body having a clip or clamp system

Definitions

  • the present invention relates to a catheter connector and a balloon catheter. More specifically, the present invention relates to a so-called monorail type balloon, in which a portion of the catheter is removably housed in a housing recess of the connector so as to improve carrying characteristics.
  • the present invention relates to a catheter connector and a balloon force table capable of improving operability during use by removably housing a proximal end of a guide wire used for a catheter. Background art
  • PTCA Percutaneous Transluminal Coronary Anglio Op1 asty
  • a balloon catheter is inserted into a blood vessel, and the balloon is inflated to expand the stenosis, thereby improving blood flow on the peripheral side of the stenosis.
  • the balloon catheter used in the above-mentioned PTCA includes an over-the-wire balloon catheter and a monorail balloon catheter.
  • the guide wire is first passed through the stenosis in the blood vessel, and then the balloon catheter is sent along the guide wire to the stenosis, and the balloon is inflated to expand the stenosis. To expand. So At this time, the stenosis needs to be expanded stepwise so as not to damage the blood vessels.
  • a balloon catheter with a balloon portion with a small outer diameter is first inserted along the guide wire, and then the outer catheter is gradually expanded. Replace with a balloon catheter with a balloon section of diameter.
  • the over-the-wire balloon catheter has a guidewire lumen formed along the entire length of the catheter tube, passes through the guidewire along the lumen, and extends the balloon along the guidewire. The part is guided to the stenosis. Then, after performing vasodilation using a balloon catheter having a smaller outer diameter balloon portion, the balloon catheter is replaced with a balloon catheter having a larger outer diameter balloon portion. In doing so, the balloon catheter is withdrawn along the guide wire, so the proximal end of the guide wire needs to extend outside the body to at least the entire length of the catheter tube. Otherwise, the balloon catheter cannot be replaced while leaving the distal end of the guidewire in the stenosis.
  • the length of the guide wire extending outside the body for replacement of the balloon catheter may be slightly longer than the length from the opening to the distal end of the balloon. This method is excellent in operability because the length of the guide wire can be shortened compared to other methods.
  • the proximal end of the balloon catheter in addition to the connector of the balloon force table, is provided on the proximal end side of the balloon catheter exposed to the outside during use. It extends outside the patient, causing the proximal end of the guidewire to wander, making it difficult to operate the balloon catheter well.
  • the present invention has been made in view of the above circumstances, and has a portability which is improved by carrying a part of the catheter in a receiving recess of the connector in a detachable manner, and is used for a so-called monorail type balloon catheter.
  • An object of the present invention is to provide a catheter connector and a balloon catheter which can enhance operability during use in a clean area by removably accommodating a proximal end of a guide wire.
  • a catheter connector according to the present invention is a catheter connector provided at a proximal end of a catheter to be introduced into a body, wherein the catheter connector is a part of the catheter or the force catheter.
  • An accommodating recess in which a part of the accessory parts is detachably mounted is formed.
  • the catheter connector preferably has a disk shape as a whole.
  • the housing recess is preferably a plurality of rows of housing grooves substantially parallel to each other along the longitudinal direction of the connector body.
  • the accommodation groove is formed in an elastically deformable portion of the catheter connector, and the elastically deformable portion is elastically deformed by an external force, so that a groove width of the accommodation groove is widened. preferable.
  • the accommodating groove constituting the accommodating recess is formed between a plurality of radially deformable flexible pieces integrally formed on a hub constituting the catheter connector.
  • a hole is formed in the hub.
  • a tightening member is movably or detachably attached to the catheter connector, and the accommodation groove is formed in an elastically deformable portion of the catheter connector.
  • the width of the accommodation groove may be reduced by elastically deforming the accommodation member.
  • the accommodating recess is not limited to the groove as described above. It may be an openable and closable storage space that penetrates in a direction substantially parallel to the longitudinal direction of the main body. Such an openable and closable storage space is preferably formed between at least a pair of gripping pieces formed integrally with the catheter connector. It is preferable that the gripping piece is elastically deformed so as to bend, and is opened in a direction in which the gripping pieces are separated from each other in a state where the gripping piece is disengaged from the hook member, thereby opening the accommodation space. It is preferable that the hook member is rotatably or detachably attached to the catheter connector.
  • a plurality of the accommodation spaces may be formed for a single catheter connector.
  • the gripping piece is elastically deformed at its base end, and is opened in a direction in which the gripping pieces are separated from each other in a state where the gripping piece is disengaged from the insertion member or the cover member, thereby opening the housing space. May be. It is preferable that the insertion member or the cover member is attached to the catheter connector so as to be slidable or detachable.
  • the housing space is provided between a fixed plate portion (preferably integrally formed with the connector) fixed to the catheter connector, and a movable plate portion rotatable with respect to the catheter connector.
  • the housing space may be opened and closed by rotating the movable plate portion with respect to the fixed plate portion.
  • a groove substantially parallel to the longitudinal direction of the connector main body may be formed on the opposing surface of the fixed plate portion or the movable plate portion.
  • the openable and closable storage space is formed between a fixed portion (preferably integrally formed with the connector) fixed to the catheter connector and a movable portion rotatable with respect to the catheter connector.
  • the housing space may be opened and closed by rotating the movable part with respect to the fixed part.
  • a groove may be formed in a part of the fixed part or the movable part.
  • the force catheter connector may be formed integrally with the tubular member constituting the proximal end of the force catheter, or may be formed separately and attached to the outer periphery of the tubular molded body You may.
  • the part of the catheter detachably mounted in the accommodation recess is, for example, an axial part of a spirally bent catheter.
  • some of the accessory parts of the catheter that are detachably mounted in the receiving recess are, for example, spirally bent.
  • a balloon catheter according to the present invention is inserted into a body cavity such as a blood vessel, and has a catheter tube in which at least two first lumens and second lumens are formed along a longitudinal direction.
  • a second lumen formed in the catheter tube is connected to the outer periphery of the distal end of the catheter tube, and the inside communicates with the second lumen.
  • the fluid can be expanded outward by the fluid sent through the second lumen.
  • An opening communicating with the first lumen is formed on the outer periphery of the catheter tube at a predetermined distance from the portion where the proximal end of the balloon portion is joined to the outer periphery of the catheter tube to the proximal end side, and the opening is formed.
  • the catheter connector provided at the proximal end of the catheter tube has a receiving recess in which the proximal end of the guide wire projecting from the opening to the proximal end side is detachably mounted. It is characterized by having been done.
  • the elongated catheter when the catheter is packed or transported before the use of the elongated catheter attached to the connector, the elongated catheter is swirled several times, for example. At the position where it bends and overlaps the connector, a part of the catheter in the axial direction is detachably mounted in the receiving recess of the connector. As a result, the elongated catheter is spirally bent and temporarily fixed to the connector, so that the catheter does not come loose. Therefore, it is easy to carry, the packaging material for the catheter can be reduced, and the packaging becomes easy.
  • the outer periphery of the catheter is preferably covered with a protective tube, and a preservation solution such as saline is sealed inside the protective tube immediately before use.
  • a protective tube that covers the outer periphery of the elongated catheter that is bent several times in a spiral shape is detachably mounted in the receiving recess of the connector at a position overlapping the connector.
  • a force The proximal end (located outside the body) of the guidewire, which protrudes to the proximal end from the opening (located inside the body) formed at the distal end of the catheter tube, is positioned outside the body.
  • the proximal end of the guide wire extending outside the body of the patient separately from the connector of the noreturn catheter does not fluctuate, and the operability of the balloon catheter is improved.
  • FIG. 1 is a perspective view of a main part of the catheter connector according to one embodiment of the present invention.
  • FIG. 2A is a plan view of the catheter connector shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along line IIB-IB in FIG.
  • FIGS. 3A and 3B are cross-sectional views showing the usage state of the catheter connector according to the embodiment
  • FIG. 3C is a cross-sectional view showing a modified example of the catheter connector.
  • FIG. 4 is a perspective view showing a state before use of the balloon catheter according to one embodiment of the present invention.
  • FIG. 5A is a cross-sectional view of a main part of the balloon catheter according to the embodiment
  • FIG. B is a cross-sectional view of a main part along line VB-VB in FIG.
  • FIG. 6 is a schematic diagram showing a use state of the balloon catheter.
  • FIGS. 7A to 7C are cross-sectional views of a main part showing a use state of the balloon catheter.
  • FIG. 8A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • FIG. 9A is a perspective view of a connector for a balloon catheter according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • FIG. 1OA is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • FIG. 11A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • FIG. 12 A is a connector for a balloon catheter according to another embodiment of the present invention.
  • FIGS. 2B and 2C are cross-sectional views of main parts of the connector.
  • FIG. 13A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. B is an exploded perspective view of the connector.
  • FIG. 14A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. 14B is a perspective view of the connector viewed from the back
  • FIG. 14C is an accommodation space formed in the hub of the connector. Is a perspective view showing an opened state
  • FIG. D is a cross-sectional view thereof
  • FIG. E is a cross-sectional view of a main part showing an operation state.
  • FIG. 15A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. B is a plan view of the connector
  • FIG. C is a plan view showing a state where a housing space of the connector is opened. It is.
  • FIG. 16 is a perspective view of a balloon catheter connector according to another embodiment of the present invention.
  • FIG. 17 is a fragmentary cross-sectional view along the line XVI-XVII shown in FIG.
  • FIG. 18 is a plan view of a main part of the connector.
  • FIG. 19 is a perspective view showing a usage example of the connector. BEST MODE FOR CARRYING OUT THE INVENTION
  • the catheter connector 50 according to an embodiment of the present invention shown in FIG. 1 is provided at the proximal end (the proximal end located outside the patient's body) of the balloon catheter 2 shown in FIG. 5A. It is the one that is attached.
  • the balloon catheter 2 according to the present embodiment shown in FI G. 5A includes, for example, percutaneous endovascular coronary angioplasty (PTCA), dilation of blood vessels such as limbs, dilation of the upper ureter, renal vasodilation, etc. It is used to dilate a stenosis formed in a blood vessel or other body cavity.
  • PTCA percutaneous endovascular coronary angioplasty
  • dilation of blood vessels such as limbs
  • dilation of the upper ureter dilation of the upper ureter
  • renal vasodilation etc. It is used to dilate a stenosis formed in a blood vessel or other body cavity.
  • PTCA percutaneous endovascular coronary angioplasty
  • the balloon catheter for expansion 2 of the present embodiment is a so-called monorail type balloon catheter.
  • the proximal end 5 and the distal end 7 of the balloon 4 are connected to the outer periphery of the distal end of the catheter tube 6, and the internal space of the balloon 4 is a sealed space.
  • a connector 50 is connected to the proximal end of the catheter tube 6.
  • connection between the proximal end 5 and the distal end 7 of the balloon portion 4 and the outer periphery of the distal end of the catheter tube 6 and the connection between the catheter tube 6 and the connector 50 are performed by joining such as heat fusion or adhesion. Done by means.
  • the balloon portion 4 is formed of a cylindrical film having both ends reduced in diameter, and the film thickness is not particularly limited, but is 5 to 500 // m, preferably 10 to 60 zm. is there.
  • the balloon portion 4 is not particularly limited as long as it is cylindrical, and may be cylindrical or polygonal.
  • the outer diameter of the balloon portion 4 at the time of inflation is determined by factors such as the inner diameter of the blood vessel, and is usually about 1.5 to 10 mm, preferably 2 to 5 mm.
  • the axial length of the balloon portion 4 is determined by factors such as the size of the intravascular stenosis, and is not particularly limited, but is 15 to 50 mm, and preferably 20 to 40 mm. Before inflation, the balloon portion 4 is folded and wrapped around the distal end of the catheter tube 6, and has an outer diameter as small as possible.
  • the material constituting the balloon portion 4 is preferably a material having a certain degree of flexibility.
  • copolymers of ethylene and other ⁇ -olefins such as polyethylene, polyethylene terephthalate, polypropylene, and ethylene-propylene copolymer are preferable.
  • Polymer, Ethylene monoacetate copolymer, Polyvinyl chloride (PVC), Crosslinked ethylene monoacetate copolymer, Polyurethane, Polyamide, Polyamide elastomer, Polyimide, Polyimide elastomer, Silicone Rubber, latex rubber, and the like can be used, and polyethylene, polyethylene terephthalate, and polyamide are preferred.
  • the catheter tube 6 may be made of, for example, the same material as that of the balloon section 4, and is preferably made of polyethylene, polyamide, or polyimide.
  • the cross-sectional outer shape of the catheter tube 6 has an elliptical shape elongated in the Y-axis direction, and the cross-section of the catheter tube 6 is perpendicular to the Y-axis.
  • the ratio of the maximum cross-sectional width xm of the catheter tube in the axial direction to the maximum cross-sectional width ym in the Y-axis direction (xm / ym), in the range of 0.8 to 0.1, and two first lumens 12 and a second lumen 14 having a circular cross section; and formed separately along the Y-axis direction.
  • the maximum cross section width ym in the Y-axis direction is preferably about 0.6 to 1.2 mm.
  • the first lumen 12 formed along the longitudinal direction of the catheter tube 6 is a portion through which the guide wire 42 is inserted, as shown in FIGS.
  • the diameter is not particularly limited as long as it can pass through the wire 42, and is, for example, 0.15 to 1.0 mm, preferably 0.25 to 0.6 mm.
  • the second lumen 14 sends a pressurized fluid into the balloon portion 4 through a communication hole 18 formed on the outer periphery of the distal end portion of the catheter tube 6, and
  • the inner diameter is substantially the same as the inner diameter of the first lumen 12.
  • the cross-sectional outer shape of the catheter tube 6 does not change along the longitudinal direction of the catheter tube 6, and has substantially the same flexibility along the longitudinal direction.
  • the first lumen 12 formed along the longitudinal direction of the catheter tube 6 is opened at a predetermined distance z from the proximal end 5 of the ball portion 4. It communicates with the outside through the part 10, from which a guide wire 42 can be inserted into the distal end side of the first lumen 12.
  • the predetermined distance z is not particularly limited.
  • the force is preferably 0 to 500 mm, and more preferably 50 to 350 mm. If the distance z is too large, the effect of shortening the length of the guide wire 42 extending outside the body by using a monorail type balloon catheter is reduced.
  • the first lumen 12 located on the proximal side of the opening 10 is filled with a plug material 11, and the guide wire lumen 15 formed on the distal end side of the first lumen 12, It does not communicate with the sealed lumen 17 formed on the proximal end side of the 1 lumen 1 2.
  • a reinforcing member such as a reinforcing wire may be inserted into the sealed lumen 17, in which case the pushability of the proximal end side of the catheter tube is improved.
  • the distal end 20 of the guide wire lumen 15 is open to the outside so that the guide wire 42 can pass therethrough.
  • the closed lumen 1 7 which is the proximal end of the first lumen Is closed off by connector 50.
  • the proximal end of the second lumen 14 communicates with an expansion port 16 formed in the connector 50, from which pressure fluid is introduced, and around the outer periphery of the distal end of the catheter tube 6.
  • the folded balloon section 4 is inflated.
  • a luer portion 62 for connecting to another tube or device is formed on the outer periphery of the expansion port 16.
  • the communication hole 18 formed in the outer periphery of the distal end portion of the catheter tube 6 may be plural or single.
  • the pressure fluid introduced into the second lumen 14 through the expansion port 16 is not particularly limited.
  • a 50/50 (weight ratio) mixed aqueous solution of a radiopaque medium and saline is used. Used.
  • the reason for including the radiopaque medium is to image the positions of the balloon portion 4 and the force-tail tube 6 using radiation when the balloon catheter 2 is used.
  • the pressure of the pressure fluid for inflating the balloon portion 4 is not particularly limited, but is about 3 to 30 atm, preferably about 4 to 8 atm in absolute pressure.
  • the distal end of the second lumen is filled with a plug 13 to prevent fluid delivered through the second lumen 14 from leaking into the blood vessel.
  • the plugs 11 and 13 shown in FIG. 5 are made of, for example, a synthetic resin strand or an adhesive.
  • the connector 50 shown in FIG. 5A is attached to a tubular connector body 52 and an outer periphery of a substantially central portion of the connector body 52 in the axial direction. And a disc-shaped hub 54.
  • a flow path communicating with the second lumen 14 of the catheter tube 6 is formed inside the connector body 52, and is connected to the luer portion 62 through the expansion port 16. Fluid pressure can be introduced from the equipment to be used.
  • the connector body 52 is formed of a thermoplastic resin such as polycarbonate, polyamide, polysulfone, polyacrylate, methacrylate butylene-styrene copolymer, or the like.
  • the outer diameter of the tubular connector body 52 is not particularly limited, but is preferably about 3 to 20 mm, and more preferably about 5 to 15 mm at the maximum outer diameter portion.
  • the outer diameter of the disk of the hub 54 is not particularly limited, but is preferably about 10 to 100 mm, and particularly preferably about 15 to 50 mm. The dimensions are determined in consideration of ease of holding with one hand.
  • the hub 54 is connected to the axis of the connector body 52. It is fixed to the outer periphery of the substantially central part in the direction 6 by means such as bonding or heat fusion.
  • the hub 54 may be detachably mounted on the outer periphery of the substantially central portion of the connector main body 52 in the axial direction along the axial direction.
  • the hub 54 may be formed integrally with the connector body 52.
  • the material of the hub 54 is the same as the material of the connector 52. However, when the hub 54 is formed separately, a material different from the material of the connector body 52 is used. It can also be configured. As will be described later, at least a part of the hub 54 needs to be elastically deformed. Therefore, it is preferable that the hub 54 be made of a material having excellent force compared to the connector main body 52.
  • Preferred materials for the hub 54 include, but are not particularly limited to, polyethylene, polypropylene, polycarbonate, nylon, ABS resin, and the like.
  • one semicircular wing of the disc-shaped hub 54 is formed so as to be elastically deformable, and three rows are formed on both sides of the fold-shaped projection 56.
  • a receiving groove (recess) 58 is formed substantially parallel to the longitudinal direction A of the connector main body 52.
  • the cross section of the fold 56 is FIG.
  • the projections are formed to be thick at the tops, and furthermore, at the substantially central portion 57 in the longitudinal direction A of the fold-shaped projections 56, the projections are further formed to be thicker.
  • a bulging portion 59 is formed in the hub 54 at a position corresponding to a substantially central portion 57 in the longitudinal direction A of the fold-shaped projection 56.
  • the accommodation groove 58 formed on both sides of the fold-shaped protrusion 56 has a groove width wider toward the bottom when no external force is applied.
  • the groove width of the accommodation groove 58 is the widest part (bottom part) and is wider than the outer diameter of the guide wire 42, and preferably, the protective tube shown in FIG. 4 covering the outer periphery of the balloon catheter 2 shown in FIG.
  • the groove width is about the same as or larger than the outer diameter of 64.
  • the end of the wing piece of the disc-shaped hub 54 on the side where the receiving groove 58 and the fold-shaped projection 57 are formed is attached to the upper surface of the hub 54.
  • a substantially parallel flange 60 is formed.
  • the hub of the connector 50a is attached to the end of the wing piece of the disc-shaped hub 54a.
  • the gripping pieces 60a projecting in a direction substantially perpendicular to the back surface of the 54 may be integrally formed.
  • the wings of the disc-shaped hub 54 are elastically deformed, the width of the upper opening of the accommodation groove 58 is widened, and the guide wire 42 and the FI
  • the protective tube 64 shown in G. 4 can be easily attached and detached.
  • the connector body 52a is formed integrally with the disc-shaped hub 54a.
  • the accommodation grooves 58 are formed in three rows, but from the viewpoint of operability, usually two rows are preferable.
  • the balloon portion 4 of the balloon catheter 2 shown in FIG. 5 is contracted and folded around the catheter tube 6. Further, the guide wire 42 is not inserted into the guide wire lumen 15 and is packaged separately from the balloon catheter 2. Moreover, the catheter tube 6 in which the balloon portion 4 is folded is inserted into the inside of the protective tube 64 as shown in FIG. 4, and the inside of the protective tube 64 is filled with a protective solution such as saline. The balloon catheter 2 is protected from dirt and dust.
  • one row of the disc-shaped hub 54 of the connector 50 attached to the proximal end of the balloon force catheter 2 has three rows of receiving grooves 58 formed therein.
  • a part of the protection tube 64 wound spirally in these housing grooves 58 is detachably inserted and temporarily fixed at a position overlapping the housing groove 58 of the connector 50. Can be.
  • the protective tube 64 into which the long catheter 2 is inserted is bent in a spiral shape and temporarily fixed to the connector, so that the protective tube 64 is not separated. Therefore, it is easy to carry, the packaging material for the balloon catheter 2 can be reduced, and the packaging becomes easy.
  • the balloon catheter 2 When using the balloon catheter 2, first, the balloon catheter 2 is taken out of the protective tube 64, and air in the balloon catheter 2 is removed as much as possible. Therefore, a suction / injection means such as a syringe is attached to the expansion port 16 of the connector 50 shown in FIG. 5, and a fluid such as an iodine-containing blood contrast agent is put into the syringe, and suction and injection are repeated. The air in the second lumen 14 and the balloon section 4 is replaced with fluid.
  • a suction / injection means such as a syringe is attached to the expansion port 16 of the connector 50 shown in FIG. 5, and a fluid such as an iodine-containing blood contrast agent is put into the syringe, and suction and injection are repeated.
  • the air in the second lumen 14 and the balloon section 4 is replaced with fluid.
  • a guide wire for a guide catheter (not shown) is inserted into the blood vessel by the Seldinger method or the like so that the distal end thereof reaches, for example, near the heart. .
  • a guide catheter 32 shown in FIG. 6 is inserted into the arterial blood vessel 34 along the guide wire for the guide catheter, and the distal end thereof is inserted into the coronary artery entrance 4 of the heart 38 having a stenosis part 36.
  • the stenosis portion 36 is formed by, for example, thrombus or arteriosclerosis.
  • pull out only the guide wire for the guide catheter insert a guide wire 42 for the balloon catheter that is thinner along the guide catheter 32, and insert the distal end of the guide wire to a position where it passes through the stenosis 36. .
  • the distal end of the guide wire 42 is inserted into the distal open end 20 of the balloon catheter 2 shown in FIG. 5, and the inside of the guide wire lumen 15 on the distal end side of the first lumen 12 is inserted. And pull it out of the opening 10.
  • the balloon catheter 2 is passed through a guide catheter 32 shown in FIG. 6 along a guide wire 42.
  • the balloon portion 4 of the balloon catheter 2 is inserted to a position just before the stenosis portion 36.
  • FIGS. 7A and 7B the folded balloon portion 4 of the balloon catheter 2 is inserted between the stenosis portions 36 along the guide wire 42.
  • FIG. 7A and 7B the folded balloon portion 4 of the balloon catheter 2 is inserted between the stenosis portions 36 along the guide wire 42.
  • the balloon portion 4 is accurately positioned at the center of the stenosis portion 36 while observing the position of the balloon portion 4 with an X-ray fluoroscope or the like.
  • the stenotic portion 36 of the blood vessel 32 can be expanded, and good treatment can be performed.
  • the balloon section 4 is inflated by injecting a fluid into the balloon section 4 from the inflation port 16 shown in FIG. 5 through the second lumen 14.
  • the expansion time is not particularly limited, but is, for example, about 1 minute.
  • the fluid is quickly evacuated from the balloon portion 4 to contract the balloon portion and secure the blood flow on the peripheral side of the dilated stenosis portion 36.
  • the stenosis 36 must be expanded stepwise so as not to injure the blood vessel 34.At first, the balloon catheter 2 having the balloon portion 4 with a small outer diameter is inserted along the guide wire 42. Then, the balloon catheter 2 is sequentially replaced with a balloon catheter 2 having a balloon portion 4 having a larger outer diameter. At this time, since the balloon catheter 2 according to the present embodiment is a monorail balloon catheter, the guide catheter 4 is slightly longer than a portion corresponding to the length of the guide wire lumen 15. The balloon catheter can be exchanged simply by extending the proximal end of 2 outside the body.
  • the proximal end (outside the body) of the guide wire 42 protruding to the proximal end side from the opening 10 (located in the body) formed on the distal end side of the catheter tube 6. 1 can be removably mounted and temporarily fixed in any of the accommodation grooves 58 formed in the catheter connector 50 located outside the body, as shown in FIG.
  • the proximal end of the guide wire 42 is freely movable along the longitudinal direction of the accommodation groove 58. Therefore, in the balloon catheter 2 according to the present embodiment, the proximal end of the guide wire 42 extending outside the patient separately from the connector 50 of the balloon catheter 2 does not fluctuate, and the no-run catheter 2 Operability is improved.
  • the cross-sectional outer shape of the catheter tube 6 has an elongated shape in the Y-axis direction as shown in FIG. Since two lumens 12 and 14 are formed along the axial direction, the outer diameter in the X-axis direction perpendicular to the Y-axis can be reduced, and wasteful X-axis direction at the cross section of the catheter tube can be achieved. Thick portions can be eliminated. For this reason, the flexibility of the force tail tube is greatly improved, especially in the X-axis direction.
  • the flexibility is enhanced by means of devising the cross-sectional shape of the catheter tube 6 without using a means made of an extremely flexible material, so that the axial rigidity is maintained to some extent. be able to.
  • a reinforcing member such as a reinforcing wire can be inserted into the sealed lumen 17 located on the proximal end side of the first lumen 12 formed in the catheter tube. The pushability of the catheter tube 6 on the proximal end side is further improved.
  • the catheter tube 6 of the present embodiment has uniform flexibility in the axial direction and is not configured by connecting dissimilar materials, a sudden change in the hardness of the catheter tube 6 along the longitudinal direction of the catheter tube 6 occurs. No operability.
  • the catheter tube 6 can be manufactured extremely easily by extrusion or the like.
  • the balloon catheter 2 according to the present embodiment is inserted into the inside of the guiding catheter 32 shown in FIG. 6 and guided to a target position. In that case, the following operation is performed. That is, since the cross section of the force tail tube 6 according to the present embodiment is non-circular, the gap between the inside of the guiding catheter 32 and the inner wall of the guiding catheter 32 can be increased. As a result, when the X-ray contrast medium is injected through the gap, the flow path resistance is reduced and the contrast medium is easily injected.
  • FIG. 8A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • 8A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54b is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
  • the hub 54 b of the present embodiment has a disk shape as a whole, has a fixing piece 65 and a fastening piece 66, and only the fixing piece 65 is provided on the outer periphery of the tubular connector body 52. It is fixed for.
  • the fastening piece 66 is attached to the outer periphery of the connector body 52 so as to be rotatable in the direction r around the axis, and the opening formed in the fastening piece 66 is provided.
  • the elastically deformable wing piece of the fixed piece 65 is detachably accommodated inside 67.
  • the three rows of accommodating grooves 58 and the two rows of fold projections 56 are integrally formed on one side of the elastically deformable wing of the fixed piece 65, and when no external force is applied, as shown in FIG. 8C.
  • the upper opening of the accommodation groove 58 is formed so as to open as much as possible.
  • An engagement groove 68 is formed on the end wall of the wing piece where the accommodation groove 58 in the fixed piece 65 is formed.
  • the engagement groove 68 has an inner convex portion formed on the inner wall surface of the opening 67 of the fastening piece 66.
  • FIG. 1 At the rotation position where the upper surface of the fastening piece 66 is substantially parallel to the upper surface of the fixing piece 65, FIG.
  • the convex portions 70 of the tightening pieces 66 engage with the engaging grooves 68 to elastically deform the wing pieces of the fixing pieces 65, and the upper opening of the accommodation groove 58 is formed.
  • the width of the groove will be reduced.
  • the connector 50b for a balloon catheter increases the groove width of the upper opening of the accommodation groove 58 when the guide wire 42 (see FIG. 1) or the like is attached to or detached from the accommodation groove 58.
  • the only difference is a mechanism for performing the same operation as the connector 50 of the first embodiment, and other structures and operations are the same.
  • injection molding or other molding is performed in a state where the upper opening of the accommodation groove 58 formed in the hub 54b is wide open (FIG. 8C). Since it is formed by the method, the die-cutting work at the time of molding is easy.
  • FIGS. B and C are cross-sectional views of a main part of the connector.
  • FIG. 9A shown in FIG. 9A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54c is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
  • the hub 54 c of the present embodiment has a disk shape as a whole, and includes a fixed wing piece 71 constituting one semicircular portion and a pair of gripping wing pieces 72 constituting the other semicircular portion. Has, These are integrally molded.
  • the pair of gripping wing pieces 72 branch off from the fixed wing piece 71 so as to sandwich the outer periphery of the connector body 52, and are elastically deformed so as to be bent as shown in FIG. In a state where the engagement is released, the grip pieces 72 are opened in a direction in which the grip pieces 72 are separated from each other, and the accommodation space (accommodation recess) 58 c is opened.
  • the hook member 74 is rotatably attached to the wing end of one gripping wing piece 72 via a rotating shaft 75, and is formed on the wing end of the other gripping wing piece 72. It has an engagement projection 76 that detachably engages with the engagement groove 78.
  • An inward projection 77 is formed on the wing end facing surface of the pair of gripping wing pieces 72 facing each other, and the engagement projection 76 of the hook member 74 is engaged with the engagement groove 78.
  • the gripping wing pieces 72 are flexed and elastically deformed, and as shown in FIG. 9B, the projections 7 7 approach each other as much as possible, and the width of the accommodation space 58c is reduced. I have.
  • the housing space 58 c formed between the gripping wing pieces 72, 72 penetrates in a direction substantially parallel to the longitudinal direction of the connector body 52, and With the engagement projections 76 engaged with the engagement grooves 78, the gripping wing pieces 72 are flexed and elastically deformed to each other, as shown in FIG. 9B, in the accommodation space 58c.
  • the protection tube 64 can be temporarily fixed.
  • the balloon catheter connector 50 c includes a guide wire 42.
  • the hub 54c of the connector 50c of the present embodiment has a simple shape, and is easily formed by injection molding or another molding method.
  • FIG. 10A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • the connector 50d of the present embodiment shown in FIG. 10A is a modified example of the connector 50c of the third embodiment, except for the configuration of the hub 54d, and the configuration of the other parts. Are the same, so the description of the overlapping parts will be omitted, and only the different parts will be described.
  • the hub 54d of the present embodiment has a disk shape as a whole, and three semi-circular wings of the hub 54d are formed with three gripping blade pieces 72d in the stacking direction. Two storage spaces 58 d are formed between them. The accommodation space 58d penetrates along the longitudinal direction of the connector main body 52.
  • two wing pieces 83, 83 are integrally formed so as to sandwich the outer periphery of the connector 52.
  • a cutout 81 is formed in each of the wing pieces 83, 83, and a cylindrical insertion member 80 is removably attached thereto.
  • a gap 84 between the wing pieces 83, 83 is provided with an insertion member 80.
  • a protrusion 82 formed on the peripheral wall surface of the housing can be detachably inserted.
  • the insertion member 80 may be taken out from the notch 81 of the wing piece 83.
  • the balloon catheter connector 50d according to the present embodiment is different from the third embodiment in that a plurality of accommodation spaces 58d for temporarily fixing the guide wire 42 (see FIG. 1) and the protective tube 64 are formed. Only the connector 50c is different from that of the connector 50c, and the other structure and operation are the same.
  • the hub 54d of the connector 50d according to the present embodiment has a simple shape, and is easily formed by injection molding or another molding method.
  • FIG. 11A is a perspective view of a connector for a vano / single catheter according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • the connector 50e of the present embodiment shown in FIG. 11A is a modified example of the connector 50d of the fourth embodiment, only the configuration of the hub 54e is different, and the configuration of the other parts. Are the same, so the description of the overlapping parts will be omitted, and only the different parts will be described.
  • the hub 54 e of the present embodiment has a disk shape as a whole, and has two semi-circular wing portions of the hub 54 e formed with two gripping blade pieces 72 e in the laminating direction. A single storage space 58 e is formed between them. The accommodation space 58 e penetrates along the longitudinal direction of the connector main body 52.
  • wing pieces 83 e and 83 e are integrally formed so as to sandwich the outer periphery of the connector 52.
  • a cap-shaped cover member 80e is detachably mounted on the outer periphery of the wing pieces 83 and 83.
  • the cover member 80e is formed with a pair of pressing pieces 82e, 82e extending to the base end of the gripping blade piece 72e.
  • the balloon catheter connector 50e includes a mechanism for opening and closing a storage space 58e for temporarily fixing a guide wire 42 (see FIG. 1), a protective tube 64, and the like.
  • the only difference from the connector 50d of the embodiment is that the other structure and operation are the same.
  • the hub of the connector 50e of the present embodiment PT / JP99 / 01346
  • 54 e has a simple shape and is easily molded by injection molding or other molding methods.
  • FIG. 12A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIGS. B and C are cross-sectional views of main parts of the connector.
  • the connector 50f of the present embodiment shown in FIG. 12A is a modified example of the connector 50e of the fifth embodiment, except for the configuration of the hub 54f, and the configuration of the other parts.
  • the common member numbers are shown in the drawings, their description is partially omitted, and only the differences are described.
  • a pair of recesses 88 are formed on the inner wall surfaces of the cover member 80 f facing the insertion holes, and these recesses 8 8 are provided with wing pieces 8 3 f and 8, respectively.
  • the bulge 86 formed on the outer surface of the 3 f wing tip is fitted.
  • the wing pieces 8 3 f, 8 3 f are bulged while the pair of wing pieces 8 3 f, 83 f are completely inserted into the insertion holes of the cover member 80 f.
  • the part 86 fits into the depressions 88, 88, and the operator can feel a click feeling in his hand.
  • FIG. 13A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. B is an exploded perspective view of the connector.
  • the connector 50 g of the present embodiment shown in FIG. 13A is a modified example of the connector 50 e of the fifth embodiment, except for the configuration of the hub 54 g, and the configuration of the other parts.
  • the common member numbers are shown in the drawings, their description is partially omitted, and only the differences are described.
  • the wing pieces 83 g and 83 g formed on one side of the hub 54 g are formed into a fan shape, and the wing pieces 83 g and 83 g are formed.
  • the upper surfaces have different angles from each other.
  • protrusions 90, 90 are formed on the inside of the distal ends of the pair of pressing pieces 82g, 82g formed on the cover member 80g, respectively.
  • gripping wing pieces 72 g and 72 g are formed, and between these, a storage space 58 g is formed.
  • the pressing piece 82 With the cover member 80 g attached to the wing pieces 83 g and 83 g, the pressing piece 82 The projections 90, 90 of the g, 82 g press the inclined surfaces 92, 92 formed on the outer surface of the gripping blade pieces 72 g, 72 g formed on the other side of the hub 54 g. I have. As a result, the width of the accommodation space 5 Sg is reduced, and a part of the guide wire 42 shown in FIG. 1 and a part of the protective tube 64 shown in FIG. 4 are temporarily fixed there. (Eighth embodiment)
  • FIG. 14A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. 14B is a perspective view of the connector viewed from the back
  • FIG. 14C is an accommodation space formed in the hub of the connector. Is a perspective view showing an opened state
  • FIG. D is a cross-sectional view thereof
  • FIG. E is a cross-sectional view of a main part showing an operation state.
  • the connector 50h of the present embodiment shown in FIG. 14A is a modified example of the connector 50 of the first embodiment, except for the configuration of the hub 54h, and the configuration of the other parts is the same. Therefore, description of overlapping parts is omitted, and only different parts will be described.
  • the hub 54h of the present embodiment has a disk shape as a whole, and has a disk-shaped fixed plate portion 71 and a semi-disk-shaped movable plate portion rotatably mounted on the fixed plate portion 94. 96, which are molded separately.
  • the movable plate portion 96 is rotatable about the connector main body 52, and the fixed plate portion 94 is fixed to the connector main body 52, and a housing space 58 is provided between the plate portions 94 and 96. h is formed.
  • FIGS. 14B and 14C the fixing plate portion 94 is formed with a slit 100 substantially orthogonal to the three rows of mounting grooves 98.
  • FIG. 15A is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. B is a plan view of the connector
  • FIG. C is a plan view showing a state where a housing space of the connector is opened. It is.
  • the connector 50i of the present embodiment shown in FIG. 15A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54i is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
  • the hub 54 i of the present embodiment has a grip portion (fixing portion) 103 of a shape that can be easily gripped by one hand of the operator as a whole, and the grip portion 103 is fixed to the connector body 52. .
  • the grip portion 103 has a fixed plate portion (fixed portion) 94 i formed in a body, and the fixed plate portion 94 i has a rotary knob (movable portion) 96 i via a rotary shaft 106. It is mounted eccentrically and rotatably.
  • an accommodation space 58i is formed between the rotary knob 96i and the side wall of the drip portion 1 ⁇ 3, and the rotary knob 96i, which rotates eccentrically, is fixed to the fixed plate portion 94i.
  • the width of the storage space 58i becomes wider or narrower. That is, on the rotary knob 96i, a projection 108 is formed on a part of the outer periphery, and an operation uneven portion 104 is formed at an outer circumferential position opposite to the protrusion 108, and the operation uneven portion 104 is formed.
  • a rotatable knob 96i is attached to the fixed plate portion 94i so as to be freely rotatable by the rotating shaft 106 nearby.
  • the width of the accommodation space 58i becomes the narrowest at the rotational position where the projection 108 faces the grip portion 103.
  • the proximal end of the guide wire 42 shown in FIG. 1 can be temporarily fixed, or a part of the protective tube 64 shown in FIG. 4 can be temporarily fixed.
  • a groove 98 i for guiding the guide wire 42 shown in 1 may be formed. Also, a groove 110 for guiding the guide wire 42 shown in FIG. 1 may be formed on the wall surface of the grip portion 103.
  • FIG. 16 is a perspective view of a balloon catheter connector according to another embodiment of the present invention
  • FIG. 17 is a cross-sectional view of a main part taken along line XV II-XV II shown in FIG.
  • FIG. 18 is a plan view of a main part of the connector
  • FIG. 19 is a perspective view showing an example of use of the connector.
  • the connector 50j of the present embodiment shown in FIG. 16 is a modified example of the connector 50 of the first embodiment, except for the configuration of the hub 54j, and the configuration of the other parts is the same. Therefore, the description of the duplicated parts is omitted, and only the differences are described.
  • the hub 54j of the present embodiment has a disk shape as a whole, and one semi-circular wing portion of the disk-shaped hub 54j has a center flexible as shown in FIGS. 17 and 18.
  • a slit 128 allowing the flexible pieces 56 'and 56j' to bend outward is formed so as to communicate with the accommodation groove 58j. I have.
  • the rear surface of the hub 54j has Holes 120 and 120 are formed.
  • a concave-convex portion 122 is formed on the rear surface of the hub 54j so as to be easily held by an operator.
  • the space indicated by reference numeral 124 in FIG. 17 is a hole for facilitating molding of the hub 54j.
  • the balloon catheter connector 50 j according to the present embodiment is provided with a protection tube 64 covering the outer periphery of the catheter 6 and the like with respect to the accommodation groove 58 j.
  • a mechanism for expanding the groove width of the upper opening of the housing groove 58 j when attaching and detaching the hub 54 j needs to elastically deform the hub 54 j by itself. Absent. That is, only by pushing the protective tube 64 shown in FIG. 19 or the guide wire 42 shown in FIG. 1 along the accommodation groove 58 j, the flexible pieces 56 j and 56 j ′ bend. It deforms and enters into the accommodation groove 58 j. Since the bulges 126, 126 are formed at the tops of the flexible pieces 56j, 56j in the central part 57j of the flexible piece, FIG. Once the protective tube 64 shown in Fig. 1 and the guide wire 42 shown in Fig. 1 are inserted into the accommodation groove 58j, they will not come off unless they are intentionally removed.
  • the catheter to which the catheter connector according to the present invention is connected is not limited to the above-mentioned monorail type PTCA catheter, but may be an over-the-wire type PTCA balloon catheter. Alternatively, other powers may be used.
  • Industrial applicability is not limited to the above-mentioned monorail type PTCA catheter, but may be an over-the-wire type PTCA balloon catheter. Alternatively, other powers may be used.
  • the catheter connector of the present invention is suitable as a connector for a force catheter of a vascular dilatation balloon catheter, and is particularly suitable as a connector for a monorail type PTC A balloon force catheter.

Abstract

A catheter connector (52), wherein the proximal end of a guide wire, a part of or an accessory to a catheter, and storing recesses (58) into which a part of a protection tube is detachably fitted are formed between a plurality of flexibly deformable flexible pieces (54) integrally formed with a hub provided at the proximal end of the catheter to be inserted into the human body and having holes as cast constituting the catheter. A balloon catheter, wherein storing recesses into which the proximal end of a monorail-type (quickly interchangeable) guide wire exposed from a catheter opening is detachably fitted are formed in a catheter connector provided at the proximal end of a catheter tube.

Description

明細書 カテーテル用コネクタおよびバルーンカテーテル 技術分野  Description Connector for catheter and balloon catheter
本発明は、 カテーテル用コネクタおよびバルーンカテーテルに係り、 さらに詳 しくは、 カテーテルの一部をコネクタの収容凹所に着脱自在に収容することによ り持ち運び特性を向上させると共に、 いわゆるモノレールタイプのバルーンカテ 一テルに使用するガイ ドワイヤの近位端部を着脱自在に収容することにより使用 中の操作性を高めることができるカテーテル用コネクタおよびバルーン力テーテ ルに関する。 背景技術  The present invention relates to a catheter connector and a balloon catheter. More specifically, the present invention relates to a so-called monorail type balloon, in which a portion of the catheter is removably housed in a housing recess of the connector so as to improve carrying characteristics. The present invention relates to a catheter connector and a balloon force table capable of improving operability during use by removably housing a proximal end of a guide wire used for a catheter. Background art
近年、 医療技術は、 低侵襲治療に向かう傾向にある。 たとえば冠状動脈の狭窄 は、 以前の冠状動脈バイパス手術に代わって、 血管拡張用バルーンカテーテルに よって処置されることが多くなつてきている。 この治療方法は、 経済的な利点と 共に、 患者の負担を大きく軽減するので、 ますます適用範囲を拡大している。 そ れと共に、 バルーンカテーテルには、 これまで以上に効率よくかつ簡単に冠状動 脈の狭窄部分を拡張することができるような構造を有すること求められている。 血管内の狭窄部を治療する方法として、 経皮的血管内冠状動脈形成術 (P e r c u t a n e o u s T r a n s l um i n a l C o r o n a r y A n g ι o p 1 a s t y、 以下、 「P TC A」 と記す。 ) が知られており、 これは、 血管 内にバルーンカテーテルを挿入し、 そのバルーン部を膨らますことにより狭窄部 を拡張して、 狭窄部末梢側の血流を改善する方法である。 上記 PTCAに用いら れるバルーンカテーテルとしては、 オーバー ·ザ · ワイヤ方式のバルーンカテー テルとモノ レール方式のバルーンカテーテルとがある。  In recent years, medical technology has tended toward minimally invasive treatment. For example, stenosis of the coronary arteries is increasingly being treated with vasodilating balloon catheters to replace previous coronary artery bypass surgery. This method of treatment is increasingly applicable because it greatly reduces the burden on the patient, along with its economic benefits. At the same time, the balloon catheter is required to have a structure that can dilate the stenotic part of the coronary artery more efficiently and easily than ever. As a method of treating a stenosis in a blood vessel, percutaneous intravascular coronary angioplasty (Percutaneous Transluminal Coronary Anglio Op1 asty, hereinafter referred to as “PTCA”) is known. In this method, a balloon catheter is inserted into a blood vessel, and the balloon is inflated to expand the stenosis, thereby improving blood flow on the peripheral side of the stenosis. The balloon catheter used in the above-mentioned PTCA includes an over-the-wire balloon catheter and a monorail balloon catheter.
これらの方式のバルーンカテーテルでは、 いずれも、 先にガイ ドワイヤを血管 内狭窄部へ通過させておき、 次にこのガイ ドワイヤに沿ってバルーンカテーテル を狭窄部まで送り込み、 バルーン部を膨らますことにより狭窄部を拡張する。 そ の際に、 狭窄部の拡張は、 血管を傷つけないように段階的に行われる必要がある ので、 最初は小さい外径のバルーン部を持つバルーンカテーテルをガイ ドワイヤ に沿って挿入し、 順次大きな外径のバル一ン部を持つバルーンカテーテルと交換 する。 In each of these types of balloon catheters, the guide wire is first passed through the stenosis in the blood vessel, and then the balloon catheter is sent along the guide wire to the stenosis, and the balloon is inflated to expand the stenosis. To expand. So At this time, the stenosis needs to be expanded stepwise so as not to damage the blood vessels.In this case, a balloon catheter with a balloon portion with a small outer diameter is first inserted along the guide wire, and then the outer catheter is gradually expanded. Replace with a balloon catheter with a balloon section of diameter.
オーバー .ザ · ワイヤ方式のバルーンカテーテルは、 カテーテル管の全長にわ たりガイ ドワイヤ用ルーメンが形成してあり、 そのルーメン内に沿ってガイ ドヮ ィャを揷通し、 そのガイ ドワイヤに沿ってバルーン部を狭窄部へと案内する。 そ して、 小さい外径のバルーン部を持つバルーンカテーテルによる血管拡張を行つ た後、 さらに大きな外径のバルーン部を持つバルーンカテーテルと交換する。 そ の際に、 ガイ ドワイヤに沿ってバルーンカテーテルを引き抜くので、 ガイ ドワイ ャの近位端は、 体外側に、 カテーテル管の全長以上に延びていることが必要であ る。 そうでないと、 ガイ ドワイヤの遠位端を狭窄部に残したままバルーンカテー テルを交換することはできない。  The over-the-wire balloon catheter has a guidewire lumen formed along the entire length of the catheter tube, passes through the guidewire along the lumen, and extends the balloon along the guidewire. The part is guided to the stenosis. Then, after performing vasodilation using a balloon catheter having a smaller outer diameter balloon portion, the balloon catheter is replaced with a balloon catheter having a larger outer diameter balloon portion. In doing so, the balloon catheter is withdrawn along the guide wire, so the proximal end of the guide wire needs to extend outside the body to at least the entire length of the catheter tube. Otherwise, the balloon catheter cannot be replaced while leaving the distal end of the guidewire in the stenosis.
これに対して、 たとえば、 特開昭 6 3— 2 8 8 1 6 7号公報に開示されている モノレール方式のバルーンカテーテルでは、 カテーテル管の途中に、 開口部を形 成し、 その開口部からガイ ドワイヤ揷通用ルーメンを通して、 ガイ ドワイヤをバ ルーン部の遠位端まで導いている。 これにより、 この方式のバルーンカテーテル では、 バルーンカテーテルの交換のために体外側に延びるガイ ドワイヤの長さは、 開口部からバルーン遠位端までの長さよりも少し長い程度で良い。 この方式では、 他の方式のものに比較して、 ガイ ドワイヤの長さを短くすることができるので操 作性に優れている。  On the other hand, for example, in the monorail balloon catheter disclosed in Japanese Patent Application Laid-Open No. 63-288168, an opening is formed in the middle of the catheter tube, and the opening is formed from the opening. The guidewire is guided to the distal end of the balloon through the guidewire through lumen. Thus, in this type of balloon catheter, the length of the guide wire extending outside the body for replacement of the balloon catheter may be slightly longer than the length from the opening to the distal end of the balloon. This method is excellent in operability because the length of the guide wire can be shortened compared to other methods.
ところが、 このようなモノ レール方式のバルーンカテーテルでは、 その使用中 に、 体外に露出するバル一ンカテーテルの近位端側において、 バルーン力テーテ ルのコネクタの他にガイ ドヮィャの近位端部が患者の体外に延びており、 ガイ ド ワイヤの近位端部がぶらつき、 バルーンカテーテルを良好に操作し難いと言う問 題を有している。  However, in such a monorail type balloon catheter, the proximal end of the balloon catheter, in addition to the connector of the balloon force table, is provided on the proximal end side of the balloon catheter exposed to the outside during use. It extends outside the patient, causing the proximal end of the guidewire to wander, making it difficult to operate the balloon catheter well.
また、 バルーンカテーテルの使用前には、 細長いカテーテル管がぶらついて持 ち運び難く、 持ち運び特性に問題を有している。  In addition, before the use of the balloon catheter, a long and thin catheter tube hangs and is difficult to carry, and there is a problem in carrying characteristics.
特に後者の問題は、 モノレール方式以外のバルーンカテーテルやその他のカテ 一テルにおいても、 同様に生じていた。 発明の開示 In particular, the latter problem is related to balloon catheters and other catheters other than monorail systems. The same happened at one tell. Disclosure of the invention
本発明は、 このような実状に鑑みてなされ、 カテーテルの一部をコネクタの収 容凹所に着脱自在に収容することにより、 持ち運び特性を向上させると共に、 い わゆるモノレールタイプのバルーンカテーテルに使用するガイ ドワイヤの近位端 部を着脱自在に収容することにより、 清潔域内での使用中の操作性を高めること ができるカテーテル用コネクタおよびバルーンカテーテルを提供することを目的 とする。  The present invention has been made in view of the above circumstances, and has a portability which is improved by carrying a part of the catheter in a receiving recess of the connector in a detachable manner, and is used for a so-called monorail type balloon catheter. An object of the present invention is to provide a catheter connector and a balloon catheter which can enhance operability during use in a clean area by removably accommodating a proximal end of a guide wire.
上記目的を達成するために、 本発明に係るカテーテル用コネクタは、 体内に揷 入されるカテーテルの近位端部に具備してあるカテーテル用コネクタであって、 前記カテーテルの一部または前記力テーテルの付属部品の一部が着脱自在に装着 される収容凹所が形成してあることを特徴とする。  In order to achieve the above object, a catheter connector according to the present invention is a catheter connector provided at a proximal end of a catheter to be introduced into a body, wherein the catheter connector is a part of the catheter or the force catheter. An accommodating recess in which a part of the accessory parts is detachably mounted is formed.
本発明において、 前記カテーテル用コネクタの形状は、 全体として円盤形状で あることが好ましい。  In the present invention, the catheter connector preferably has a disk shape as a whole.
前記収容凹所としては、 コネクタ本体の長手方向に沿って実質的に平行な複数 列の収容溝であることが好ましい。  The housing recess is preferably a plurality of rows of housing grooves substantially parallel to each other along the longitudinal direction of the connector body.
前記収容溝は、 前記カテーテル用コネクタの弾性変形可能部分に形成してあり、 この弹性変形可能部分を外力により弾性変形させることで、 前記収容溝の溝幅が 広がるように構成してあることが好ましい。  The accommodation groove is formed in an elastically deformable portion of the catheter connector, and the elastically deformable portion is elastically deformed by an external force, so that a groove width of the accommodation groove is widened. preferable.
あるいは、 前記収容凹所を構成する収容溝は、 カテーテル用コネクタを構成す るハブに一体成形してある複数の橈み変形可能な可撓片の間に形成してあり、 当 該可撓片を一体成形するために、 前記ハブには、 铸抜き孔が形成してあることが 好ましい。  Alternatively, the accommodating groove constituting the accommodating recess is formed between a plurality of radially deformable flexible pieces integrally formed on a hub constituting the catheter connector. In order to integrally mold the hub, it is preferable that a hole is formed in the hub.
または、 前記カテーテル用コネクタには、 締め付け部材が移動自在または着脱 自在に装着してあり、 前記収容溝は、 前記カテーテル用コネクタの弾性変形可能 部分に形成してあり、 この弾性変形可能部分を前記締め付け部材により弾性変形 させることで、 前記収容溝の溝幅が狭められるように構成しても良い。  Alternatively, a tightening member is movably or detachably attached to the catheter connector, and the accommodation groove is formed in an elastically deformable portion of the catheter connector. The width of the accommodation groove may be reduced by elastically deforming the accommodation member.
本発明において、 前記収容凹所としては、 上述したような溝に限らず、 コネク タ本体の長手方向に沿って実質的に平行な方向に貫通している開閉自在な収容空 間であっても良い。 このような開閉自在な収容空間は、 カテーテル用コネクタと 一体に成形してある少なく とも一対の把持片の間に形成されることが好ましい。 前記把持片は、 撓むように弾性変形し、 フック部材との係合が外れた状態で、 把 持片相互が離れる方向に開き、 前記収容空間を開くように構成してあることが好 ましい。 前記フック部材は、 前記カテーテル用コネクタに対して、 回動自在また は着脱自在に装着してあることが好ましい。 In the present invention, the accommodating recess is not limited to the groove as described above. It may be an openable and closable storage space that penetrates in a direction substantially parallel to the longitudinal direction of the main body. Such an openable and closable storage space is preferably formed between at least a pair of gripping pieces formed integrally with the catheter connector. It is preferable that the gripping piece is elastically deformed so as to bend, and is opened in a direction in which the gripping pieces are separated from each other in a state where the gripping piece is disengaged from the hook member, thereby opening the accommodation space. It is preferable that the hook member is rotatably or detachably attached to the catheter connector.
前記収容空間は、 単一のカテーテル用コネクタに対して複数形成しても良い。 また、 前記把持片は、 その基端部において弾性変形し、 差し込み部材またはカバ 一部材との係合が外れた状態で、 把持片相互が離れる方向に開き、 前記収容空間 を開くように構成しても良い。 前記差し込み部材またはカバー部材は、 前記カテ 一テル用コネクタに対して、 スライ ド移動自在または着脱自在に装着してあるこ とが好ましい。  A plurality of the accommodation spaces may be formed for a single catheter connector. The gripping piece is elastically deformed at its base end, and is opened in a direction in which the gripping pieces are separated from each other in a state where the gripping piece is disengaged from the insertion member or the cover member, thereby opening the housing space. May be. It is preferable that the insertion member or the cover member is attached to the catheter connector so as to be slidable or detachable.
前記収容空間は、前記カテーテル用コネクタに対して固定してある固定板部(好 ましくはコネクタと一体成形) と、 前記カテーテル用コネクタに対して回動移動 自在な可動板部との間に形成し、 可動板部を固定板部に対して回動させることで、 前記収容空間を開閉可能にしても良い。 その固定板部または可動板部の対向する 表面には、 コネクタ本体の長手方向と実質的に平行な溝が形成してあっても良い。 前記開閉自在な収容空間は、 前記カテーテル用コネクタに対して固定してある 固定部 (好ましくはコネクタと一体成形) と、 前記カテーテル用コネクタに対し て回転移動自在な可動部との間に形成し、 可動部を固定部に対して回転させるこ とで、 前記収容空間を開閉可能にしても良い。 その固定部または可動部の一部に は、 溝が形成してあっても良い。  The housing space is provided between a fixed plate portion (preferably integrally formed with the connector) fixed to the catheter connector, and a movable plate portion rotatable with respect to the catheter connector. The housing space may be opened and closed by rotating the movable plate portion with respect to the fixed plate portion. A groove substantially parallel to the longitudinal direction of the connector main body may be formed on the opposing surface of the fixed plate portion or the movable plate portion. The openable and closable storage space is formed between a fixed portion (preferably integrally formed with the connector) fixed to the catheter connector and a movable portion rotatable with respect to the catheter connector. The housing space may be opened and closed by rotating the movable part with respect to the fixed part. A groove may be formed in a part of the fixed part or the movable part.
前記力テーテル用コネクタは、 前記力テ一テルの近位端部を構成するチューブ 状部材に対して一体に成形しても良いし、 別体に成形してチューブ状成形体の外 周に装着しても良い。  The force catheter connector may be formed integrally with the tubular member constituting the proximal end of the force catheter, or may be formed separately and attached to the outer periphery of the tubular molded body You may.
本発明において、 収容凹所に着脱自在に装着されるカテーテルの一部とは、 た とえば渦巻き状に曲げられたカテーテルの軸方向一部である。 また、 収容凹所に 着脱自在に装着されるカテーテルの付属部品の一部とは、 たとえば渦巻き状に曲 げられたカテーテルの外周を覆う保護チューブの軸方向一部である。 または、 た とえばカテーテルの使用に際して用いるガイ ドワイヤの近位端部である。 In the present invention, the part of the catheter detachably mounted in the accommodation recess is, for example, an axial part of a spirally bent catheter. In addition, some of the accessory parts of the catheter that are detachably mounted in the receiving recess are, for example, spirally bent. It is an axial part of a protective tube that covers the outer periphery of the catheter that is splayed. Or, for example, at the proximal end of a guidewire used in the use of a catheter.
本発明に係るバルーンカテーテルは、 血管などの体腔内に挿入され、 少なくと も 2つの第 1ルーメンと第 2ルーメンとが長手方向に沿って形成してあるカテー テル管と、  A balloon catheter according to the present invention is inserted into a body cavity such as a blood vessel, and has a catheter tube in which at least two first lumens and second lumens are formed along a longitudinal direction.
前記カテーテル管の遠位端部の外周に接続されて、 前記カテーテル管に形成さ れた第 2ルーメンと内部が連通し、 その第 2ルーメンを通して送られてくる流体 により外方に膨らむことが可能なバルーン部とを有し、  A second lumen formed in the catheter tube is connected to the outer periphery of the distal end of the catheter tube, and the inside communicates with the second lumen. The fluid can be expanded outward by the fluid sent through the second lumen. With a balloon portion,
前記バルーン部の近位端が前記カテーテル管の外周に接合する部分から近位端 側に所定距離離れたカテーテル管の外周に、 前記第 1ルーメンに連通する開口部 が形成してあり、 当該開口部を通して、 ガイ ドワイヤの遠位端部が前記第 1ルー メン内に挿入されるバルーンカテーテルであって、  An opening communicating with the first lumen is formed on the outer periphery of the catheter tube at a predetermined distance from the portion where the proximal end of the balloon portion is joined to the outer periphery of the catheter tube to the proximal end side, and the opening is formed. A balloon catheter through which the distal end of the guidewire is inserted into the first lumen;
前記カテーテル管の近位端部に具備してあるカテーテル用コネクタには、 前記 開口部から近位端側に飛び出ているガイ ドワイヤの近位端部が着脱自在に装着さ れる収容凹所が形成してあることを特徴とする。  The catheter connector provided at the proximal end of the catheter tube has a receiving recess in which the proximal end of the guide wire projecting from the opening to the proximal end side is detachably mounted. It is characterized by having been done.
本発明に係るカテーテル用コネクタでは、 コネクタに装着してある細長いカテ 一テルの使用前の状態において、 カテーテルを梱包しておく場合や持ち運びする 場合には、 細長いカテーテルを、 たとえば渦巻き状に数回曲げて、 コネクタに重 なる位置で、 そのカテーテルの軸方向一部を、 コネクタの収容凹所内に着脱自在 に装着する。 その結果、 細長いカテーテルが渦巻き状に曲げられてコネクタに対 して仮固定され、 カテーテルがばらけることがなくなる。 したがって、 持ち運び が容易になると共に、 カテーテルの梱包材料の削減が可能になると共に、 梱包も 容易になる。  In the catheter connector according to the present invention, when the catheter is packed or transported before the use of the elongated catheter attached to the connector, the elongated catheter is swirled several times, for example. At the position where it bends and overlaps the connector, a part of the catheter in the axial direction is detachably mounted in the receiving recess of the connector. As a result, the elongated catheter is spirally bent and temporarily fixed to the connector, so that the catheter does not come loose. Therefore, it is easy to carry, the packaging material for the catheter can be reduced, and the packaging becomes easy.
なお、 細長いカテーテルの使用前には、 カテーテルの外周部は、 保護チューブ で覆われていることが好ましく、 使用直前の保護チューブの内部には、 生理食塩 水などの保存液が密封してあることが好ましい。 このような場合には、 たとえば 渦巻き状に数回曲げられた細長いカテーテルの外周を覆う保護チューブが、 コネ クタに重なる位置で、 コネクタの収容凹所内に着脱自在に装着されることになる。 また、 本発明に係るバルーンカテーテルにおいては、 その使用中において、 力 テーテル管の遠位端側に形成してある開口部 (体内に位置する) から近位端側に 飛び出ているガイ ドワイヤの近位端部 (体外に位置する) を、 体外に位置する力 テーテル用コネクタに形成してある収容凹所內に着脱自在に装着して仮固定する ことができる。 したがって、 本発明に係るバルーンカテーテルにおいては、 ノ レ ーンカテーテルのコネクタとは別に患者の体外に延びているガイ ドワイヤの近位 端部がぶらつくことがなくなり、 バルーンカテーテルの操作性が向上する。 図面の簡単な説明 Before using an elongated catheter, the outer periphery of the catheter is preferably covered with a protective tube, and a preservation solution such as saline is sealed inside the protective tube immediately before use. Is preferred. In such a case, for example, a protective tube that covers the outer periphery of the elongated catheter that is bent several times in a spiral shape is detachably mounted in the receiving recess of the connector at a position overlapping the connector. In the balloon catheter according to the present invention, a force The proximal end (located outside the body) of the guidewire, which protrudes to the proximal end from the opening (located inside the body) formed at the distal end of the catheter tube, is positioned outside the body. And can be temporarily fixed by being detachably attached to the accommodating recess 內 formed in the connector for use. Therefore, in the balloon catheter according to the present invention, the proximal end of the guide wire extending outside the body of the patient separately from the connector of the noreturn catheter does not fluctuate, and the operability of the balloon catheter is improved. BRIEF DESCRIPTION OF THE FIGURES
F I G. 1は本発明の 1実施形態に係るカテーテル用コネクタの要部斜視図で ある。  FIG. 1 is a perspective view of a main part of the catheter connector according to one embodiment of the present invention.
F I G. 2 Aは F I G. 1に示すカテーテル用コネクタの平面図、 F I G. 2 Bは同図 Aにおける I I B— I I B線に沿う断面図である。  FIG. 2A is a plan view of the catheter connector shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along line IIB-IB in FIG.
F I G. 3A、 Bは同実施形態に係るカテーテル用コネクタの使用状態を示す 断面図、 同図 Cはカテーテル用コネクタの変形例を示す断面図である。  FIGS. 3A and 3B are cross-sectional views showing the usage state of the catheter connector according to the embodiment, and FIG. 3C is a cross-sectional view showing a modified example of the catheter connector.
F I G. 4は本発明の 1実施形態に係るバルーンカテーテルの使用前の状態を 示す斜視図である。  FIG. 4 is a perspective view showing a state before use of the balloon catheter according to one embodiment of the present invention.
F I G. 5 Aは同実施形態に係るバルーンカテーテルの要部断面図、 同図 Bは 同図 Aの VB— V B線に沿う要部断面図である。  FIG. 5A is a cross-sectional view of a main part of the balloon catheter according to the embodiment, and FIG. B is a cross-sectional view of a main part along line VB-VB in FIG.
F I G. 6はバル一ンカテーテルの使用状態を示す概略図である。  FIG. 6 is a schematic diagram showing a use state of the balloon catheter.
F I G. 7 A〜Cはバルーンカテーテルの使用状態を示す要部断面図である。  FIGS. 7A to 7C are cross-sectional views of a main part showing a use state of the balloon catheter.
F I G. 8 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 8A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G. 9 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 9A is a perspective view of a connector for a balloon catheter according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G. 1 OAは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 1OA is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G. 1 1 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 11A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G. 1 2 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。 FI G.12 A is a connector for a balloon catheter according to another embodiment of the present invention. FIGS. 2B and 2C are cross-sectional views of main parts of the connector.
F I G. 1 3 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはそのコネクタの分解斜視図である。  FIG. 13A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIG. B is an exploded perspective view of the connector.
F I G. 14 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはコネクタの背面から見た斜視図、 同図 Cはコネクタのハブに 形成してある収容空間を開いた状態を示す斜視図、 同図 Dはその断面図、 同図 E は操作の状態を示す要部断面図である。  FIG. 14A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, FIG. 14B is a perspective view of the connector viewed from the back, and FIG. 14C is an accommodation space formed in the hub of the connector. Is a perspective view showing an opened state, FIG. D is a cross-sectional view thereof, and FIG. E is a cross-sectional view of a main part showing an operation state.
F I G. 1 5 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはコネクタの平面図、 同図 Cはコネクタの収容空間をを開いた 状態を示す平面図である。  FIG. 15A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, FIG. B is a plan view of the connector, and FIG. C is a plan view showing a state where a housing space of the connector is opened. It is.
F I G. 1 6は本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図である。  FIG. 16 is a perspective view of a balloon catheter connector according to another embodiment of the present invention.
F I G. 1 7は F I G. 1 6に示す XV I I—XV I I線に沿う要部断面図で あ 。  FIG. 17 is a fragmentary cross-sectional view along the line XVI-XVII shown in FIG.
F I G. 1 8はコネクタの要部平面図である。  FIG. 18 is a plan view of a main part of the connector.
F I G. 1 9はコネクタの使用例を示す斜視図である。 発明を実施するための最良の形態  FIG. 19 is a perspective view showing a usage example of the connector. BEST MODE FOR CARRYING OUT THE INVENTION
以下、 本発明を、 図面に示す実施形態に基づき説明する。  Hereinafter, the present invention will be described based on embodiments shown in the drawings.
(第 1実施形態)  (First Embodiment)
F I G. 1に示す本発明の 1実施形態に係るカテーテル用コネクタ 50は、 F I G. 5 Aに示すバルーンカテーテル 2の近位端部 (患者の体外には配置される 手元側端部) に装着してあるものである。  The catheter connector 50 according to an embodiment of the present invention shown in FIG. 1 is provided at the proximal end (the proximal end located outside the patient's body) of the balloon catheter 2 shown in FIG. 5A. It is the one that is attached.
F I G. 5 Aに示す本実施形態に係るバルーンカテーテル 2は、 たとえば経皮 的血管内冠動脈形成術 (PTCA) 、 四肢等の血管の拡張術、 上部尿管の拡張術、 腎血管拡張術などの方法に用いられ、 血管あるいはその他の体腔に形成された狭 窄部を拡張するために用いられる。 以下の説明では、 本実施形態のバルーンカテ 一テル 2を P T C Aに用いる場合を例として説明する。  The balloon catheter 2 according to the present embodiment shown in FI G. 5A includes, for example, percutaneous endovascular coronary angioplasty (PTCA), dilation of blood vessels such as limbs, dilation of the upper ureter, renal vasodilation, etc. It is used to dilate a stenosis formed in a blood vessel or other body cavity. In the following description, a case where the balloon catheter 2 of the present embodiment is used for PTCA will be described as an example.
本実施形態の拡張用バルーンカテーテル 2は、 いわゆるモノレール方式のバル ーンカテーテルであり、 バルーン部 4と、 カテーテル管 6と、 コネクタ 5 0とを 有する。 カテーテル管 6の遠位端部外周には、 バルーン部 4の近位端部 5と遠位 端部 7とが接続してあり、 バルーン部 4の内部空間が密封空間となっている。 ま た、 カテーテル管 6の近位端部には、 コネクタ 5 0が接続してある。 The balloon catheter for expansion 2 of the present embodiment is a so-called monorail type balloon catheter. A balloon catheter 4, a catheter tube 6, and a connector 50. The proximal end 5 and the distal end 7 of the balloon 4 are connected to the outer periphery of the distal end of the catheter tube 6, and the internal space of the balloon 4 is a sealed space. A connector 50 is connected to the proximal end of the catheter tube 6.
バルーン部 4の近位端部 5および遠位端部 7とカテーテル管 6の遠位端部外周 との接続、 およびカテーテル管 6とコネクタ 5 0との接続は、 熱融着または接着 などの接合手段で行われる。  The connection between the proximal end 5 and the distal end 7 of the balloon portion 4 and the outer periphery of the distal end of the catheter tube 6 and the connection between the catheter tube 6 and the connector 50 are performed by joining such as heat fusion or adhesion. Done by means.
バルーン部 4は、 両端部が縮径された筒状の膜体で構成され、 その膜厚は、 特 に限定されないが、 5〜5 0 0 // m、 好ましくは 1 0〜6 0 z mである。 バル一 ン部 4は、 筒状であれば、 特に限定されず、 円筒または多角筒形状でも良い。 ま た、 膨張時のバルーン部 4の外径は、 血管の内径などの因子によって決定され、 通常 1 . 5〜1 0 . O mm程度、 好ましくは、 2〜5 mmである。 このバルーン 部 4の軸方向長さは、 血管内狭窄部の大きさなどの因子によって決定され、 特に 限定されないが、 1 5〜5 0 mm、 好ましくは 2 0〜 4 0 mmである。 膨張する 前のバルーン部 4は、 カテーテル管 6の遠位端部周囲に折り畳まれて巻き付けら れ、 可能な限り外径が小さくなつている。  The balloon portion 4 is formed of a cylindrical film having both ends reduced in diameter, and the film thickness is not particularly limited, but is 5 to 500 // m, preferably 10 to 60 zm. is there. The balloon portion 4 is not particularly limited as long as it is cylindrical, and may be cylindrical or polygonal. The outer diameter of the balloon portion 4 at the time of inflation is determined by factors such as the inner diameter of the blood vessel, and is usually about 1.5 to 10 mm, preferably 2 to 5 mm. The axial length of the balloon portion 4 is determined by factors such as the size of the intravascular stenosis, and is not particularly limited, but is 15 to 50 mm, and preferably 20 to 40 mm. Before inflation, the balloon portion 4 is folded and wrapped around the distal end of the catheter tube 6, and has an outer diameter as small as possible.
バルーン部 4を構成する材料は、 ある程度の可撓性を有する材料であることが 好ましく、 たとえばポリエチレン、 ポリエチレンテレフタレート、 ポリプロピレ ン、 エチレン一プロピレン共重合体等のエチレンと他の α—ォレフィンとの共重 合体、 エチレン一酢酸ビニル共重合体、 ポリ塩化ビニル (P V C ) 、 架橋型ェチ レン一酢酸ビュル共重合体、 ポリウレタン、 ポリアミ ド、 ポリアミ ドエラス卜マ 一、 ポリイミ ド、 ポリイ ミ ドエラス トマー、 シリコーンゴム、 ラテックスゴムな どが使用でき、 好ましくは、 ポリエチレン、 ポリエチレンテレフタレー卜、 ポリ アミ ドである。  The material constituting the balloon portion 4 is preferably a material having a certain degree of flexibility. For example, copolymers of ethylene and other α-olefins such as polyethylene, polyethylene terephthalate, polypropylene, and ethylene-propylene copolymer are preferable. Polymer, Ethylene monoacetate copolymer, Polyvinyl chloride (PVC), Crosslinked ethylene monoacetate copolymer, Polyurethane, Polyamide, Polyamide elastomer, Polyimide, Polyimide elastomer, Silicone Rubber, latex rubber, and the like can be used, and polyethylene, polyethylene terephthalate, and polyamide are preferred.
カテーテル管 6は、 たとえばバルーン部 4と同様な材料で構成されて良く、 好 ましくは、 ポリエチレン、 ポリアミ ド、 ポリイミ ドで構成される。 本実施形態で は、 このカテーテル管 6の横断面外形形状が、 F I G . 5 Bに示すように、 Y軸 方向に細長い楕円形状を有し、 カテーテル管 6の断面で、 Y軸と垂直な X軸方向 のカテーテル管の最大断面幅 x mと、 Y軸方向の最大断面幅 y mとの比 ( x m/ y m) 、 0. 8〜0. 1の範囲にあり、 断面円形の 2つの第 1ルーメン 1 2お よび第 2ルーメン 14力;、 前記 Y軸方向に沿って分離して形成してある。 The catheter tube 6 may be made of, for example, the same material as that of the balloon section 4, and is preferably made of polyethylene, polyamide, or polyimide. In this embodiment, as shown in FIG. 5B, the cross-sectional outer shape of the catheter tube 6 has an elliptical shape elongated in the Y-axis direction, and the cross-section of the catheter tube 6 is perpendicular to the Y-axis. The ratio of the maximum cross-sectional width xm of the catheter tube in the axial direction to the maximum cross-sectional width ym in the Y-axis direction (xm / ym), in the range of 0.8 to 0.1, and two first lumens 12 and a second lumen 14 having a circular cross section; and formed separately along the Y-axis direction.
本実施形態では、 カテーテル管 6の断面において、 Y軸方向の最大断面幅 ym は、 0. 6〜1. 2 mm程度が好ましい。 このカテーテル管 6の長手方向に沿つ て形成された第 1ルーメン 1 2は、 F I G. 5 A, Bに示すように、 ガイ ドワイ ャ 42が挿通される部分であり、 その内径は、 ガイ ドワイヤ 42を揷通できる径 であれば特に限定されず、 たとえば 0. 1 5〜; 1. 0mm、 好ましくは 0. 25 〜0. 6mmである。 また、 第 2ルーメン 14は、 F I G. 5Aに示すように、 カテーテル管 6の遠位端部外周に形成された連通孔 1 8を通して、 バルーン部 4 の内部に圧力流体を送り込み、 バルーン部 4を膨らます部分であり、 その内径は、 第 1ルーメン 1 2の内径と略同程度である。 なお、 カテーテル管 6の横断面外形 形状は、 カテーテル管 6の長手方向に沿って変化せず、 長手方向に沿って実質的 に同一の可撓性を有する。  In the present embodiment, in the cross section of the catheter tube 6, the maximum cross section width ym in the Y-axis direction is preferably about 0.6 to 1.2 mm. The first lumen 12 formed along the longitudinal direction of the catheter tube 6 is a portion through which the guide wire 42 is inserted, as shown in FIGS. The diameter is not particularly limited as long as it can pass through the wire 42, and is, for example, 0.15 to 1.0 mm, preferably 0.25 to 0.6 mm. Further, as shown in FIG. 5A, the second lumen 14 sends a pressurized fluid into the balloon portion 4 through a communication hole 18 formed on the outer periphery of the distal end portion of the catheter tube 6, and The inner diameter is substantially the same as the inner diameter of the first lumen 12. The cross-sectional outer shape of the catheter tube 6 does not change along the longitudinal direction of the catheter tube 6, and has substantially the same flexibility along the longitudinal direction.
F I G. 5Aに示すように、 カテーテル管 6の長手方向に沿って形成された第 1ルーメン 1 2は、 バル一ン部 4の近位端部 5から所定距離 zで離れた位置で、 開口部 10を通して外部と連通しており、 そこからガイ ドワイヤ 42が第 1ルー メン 1 2の遠位端側に挿通可能になっている。 所定距離 zは、 特に限定されない 力 0〜 500 mm、 好ましくは 50〜 350 mmであることが好ましレヽ。 この 距離 zがあまりに大きすぎると、 モノレール方式のバル一ンカテーテルとするこ とにより、 体外側に延びるガイ ドワイヤ 42の長さを短くするという効果が少な くなる。  As shown in FI G. 5A, the first lumen 12 formed along the longitudinal direction of the catheter tube 6 is opened at a predetermined distance z from the proximal end 5 of the ball portion 4. It communicates with the outside through the part 10, from which a guide wire 42 can be inserted into the distal end side of the first lumen 12. The predetermined distance z is not particularly limited. The force is preferably 0 to 500 mm, and more preferably 50 to 350 mm. If the distance z is too large, the effect of shortening the length of the guide wire 42 extending outside the body by using a monorail type balloon catheter is reduced.
開口部 10の近位側に位置する第 1ルーメン 1 2には、 ブラグ材 1 1が充填し てあり、 第 1ルーメン 1 2の遠位端側に形成されたガイ ドワイヤ用ルーメン 1 5 、 第 1ルーメン 1 2の近位端側に形成された密閉ルーメン 1 7と連通しないよ うになつている。 密閉ルーメン 1 7には、 補強ワイヤなどの補強部材を挿入して も良く、 その場合には、 カテーテル管の近位端側の押し込み性が向上する。 また、 ガイ ドワイヤ用ルーメン 1 5の遠位端 20は、 外部に開口してあり、 そこを通し てガイ ドワイヤ 42が揷通可能になっている。  The first lumen 12 located on the proximal side of the opening 10 is filled with a plug material 11, and the guide wire lumen 15 formed on the distal end side of the first lumen 12, It does not communicate with the sealed lumen 17 formed on the proximal end side of the 1 lumen 1 2. A reinforcing member such as a reinforcing wire may be inserted into the sealed lumen 17, in which case the pushability of the proximal end side of the catheter tube is improved. Further, the distal end 20 of the guide wire lumen 15 is open to the outside so that the guide wire 42 can pass therethrough.
F I G. 5 Aに示すように、 第 1ルーメンの近位端側である密閉ルーメン 1 7 の近位端は、 コネクタ 5 0により閉塞してある。 これに対して、 第 2ルーメン 1 4の近位端は、 コネクタ 5 0に形成してある拡張ポート 1 6が連通し、 そこから 圧力流体が導入され、 カテーテル管 6の遠位端部外周に折り畳まれたバルーン部 4を膨らますようになつている。 拡張ポート 1 6の外周には、 他のチューブまた は機器に接続するためのルアー部 6 2が形成してある。 なお、 カテーテル管 6の 遠位端部外周に形成された連通孔 1 8は、 複数でも単一でも良い。 As shown in FI G. 5 A, the closed lumen 1 7 which is the proximal end of the first lumen Is closed off by connector 50. On the other hand, the proximal end of the second lumen 14 communicates with an expansion port 16 formed in the connector 50, from which pressure fluid is introduced, and around the outer periphery of the distal end of the catheter tube 6. The folded balloon section 4 is inflated. A luer portion 62 for connecting to another tube or device is formed on the outer periphery of the expansion port 16. In addition, the communication hole 18 formed in the outer periphery of the distal end portion of the catheter tube 6 may be plural or single.
拡張ポート 1 6を通して第 2ルーメン 1 4内に導入される圧力流体としては、 特に限定されないが、 たとえば放射線不透過性媒体と生理食塩水との 5 0 / 5 0 (重量比) 混合水溶液などが用いられる。 放射線不透過性媒体を含ませるのは、 バルーンカテーテル 2の使用時に、 放射線を用いてバルーン部 4および力テーテ ル管 6の位置を造影するためである。 バルーン部 4を膨らますための圧力流体の 圧力は、 特に限定されないが、 絶対圧で 3〜3 0気圧、 好ましくは、 4〜8気圧 程度である。 第 2ルーメン 1 4を通して送られる流体が血管中に漏洩することを 防止するために、 第 2ルーメンの遠位端には、 プラグ 1 3が充填してある。 F I G . 5に示すプラグ 1 1および 1 3は、 たとえば合成樹脂製ス トランド、 あるい は接着剤などで構成される。  The pressure fluid introduced into the second lumen 14 through the expansion port 16 is not particularly limited. For example, a 50/50 (weight ratio) mixed aqueous solution of a radiopaque medium and saline is used. Used. The reason for including the radiopaque medium is to image the positions of the balloon portion 4 and the force-tail tube 6 using radiation when the balloon catheter 2 is used. The pressure of the pressure fluid for inflating the balloon portion 4 is not particularly limited, but is about 3 to 30 atm, preferably about 4 to 8 atm in absolute pressure. The distal end of the second lumen is filled with a plug 13 to prevent fluid delivered through the second lumen 14 from leaking into the blood vessel. The plugs 11 and 13 shown in FIG. 5 are made of, for example, a synthetic resin strand or an adhesive.
本実施形態では、 F I G . 5 Aに示すコネクタ 5 0は、 F I G . 1に示すよう に、 チューブ状のコネクタ本体 5 2と、 このコネクタ本体 5 2の軸方向略中央部 の外周に装着される円盤状のハブ 5 4とを有する。 コネクタ本体 5 2の内部には、 F I G . 5 Aに示すように、 カテーテル管 6の第 2ルーメン 1 4に連通する流路 が形成してあり、 拡張ポート 1 6を通して、 ルアー部 6 2に接続される機器から 流体圧が導入可能になっている。 コネクタ本体 5 2は、 たとえばポリカーボネー 卜、 ポリアミ ド、 ポリサルホン、 ポリアク リ レー 卜、 メタク リ レー 卜ーブチレン ースチレン共重合体などの熱可塑性樹脂から成形される。 このチューブ状コネク タ本体 5 2の外径は、 特に限定されないが、 最大外径部分において、 好ましくは 3〜2 0 mm、 さらに好ましくは 5〜1 5 mm程度である。  In this embodiment, as shown in FIG. 1, the connector 50 shown in FIG. 5A is attached to a tubular connector body 52 and an outer periphery of a substantially central portion of the connector body 52 in the axial direction. And a disc-shaped hub 54. As shown in FIG. 5A, a flow path communicating with the second lumen 14 of the catheter tube 6 is formed inside the connector body 52, and is connected to the luer portion 62 through the expansion port 16. Fluid pressure can be introduced from the equipment to be used. The connector body 52 is formed of a thermoplastic resin such as polycarbonate, polyamide, polysulfone, polyacrylate, methacrylate butylene-styrene copolymer, or the like. The outer diameter of the tubular connector body 52 is not particularly limited, but is preferably about 3 to 20 mm, and more preferably about 5 to 15 mm at the maximum outer diameter portion.
ハブ 5 4の円盤の外径は、 特に限定されないが、 好ましくは 1 0〜 1 0 0 mm、 特に好ましくは 1 5〜5 0 mm程度である。 その寸法は、 片手での持ち易さなど を考慮して決定される。 本実施形態では、 ハブ 5 4は、 コネクタ本体 5 2の軸方 6 向略中央部分の外周に、 接着または熱融着などの手段で固定される。 または、 ハ ブ 54は、 コネクタ本体 52の軸方向略中央部分の外周に、 軸方向に沿って着脱 自在に装着しても良い。 あるいは、 ハブ 54は、 コネクタ本体 52と一体に成形 しても良レ、。 The outer diameter of the disk of the hub 54 is not particularly limited, but is preferably about 10 to 100 mm, and particularly preferably about 15 to 50 mm. The dimensions are determined in consideration of ease of holding with one hand. In this embodiment, the hub 54 is connected to the axis of the connector body 52. It is fixed to the outer periphery of the substantially central part in the direction 6 by means such as bonding or heat fusion. Alternatively, the hub 54 may be detachably mounted on the outer periphery of the substantially central portion of the connector main body 52 in the axial direction along the axial direction. Alternatively, the hub 54 may be formed integrally with the connector body 52.
ハブ 54をコネクタ 52と一体に成形する場合には、 ハブ 54の材料は、 コネ クタ 52の材料と同一な材料となるが、 別に成形する場合には、 コネクタ本体 5 2の材料と異なる材料で構成することもできる。 後述するように、 ハブ 54の少 なくとも一部は、 弾性変形する必要があるので、 コネクタ本体 52に比較して弹 力性に優れた材料で構成することが好ましい。 ハブ 54の材料として好ましい材 料としては、 特に限定されないが、 ポリエチレン、 ポリプロピレン、 ポリカーボ ネート、 ナイロン、 AB S樹脂などを例示することができる。  When the hub 54 is formed integrally with the connector 52, the material of the hub 54 is the same as the material of the connector 52. However, when the hub 54 is formed separately, a material different from the material of the connector body 52 is used. It can also be configured. As will be described later, at least a part of the hub 54 needs to be elastically deformed. Therefore, it is preferable that the hub 54 be made of a material having excellent force compared to the connector main body 52. Preferred materials for the hub 54 include, but are not particularly limited to, polyethylene, polypropylene, polycarbonate, nylon, ABS resin, and the like.
本実施形態では、 F I G. 1および 2に示すように、 円盤状のハブ 54の片方 の半円状翼部は、 弾性変形可能に成形してあり、 襞状突起 56の両側に三列の収 容溝 (凹所) 58がコネクタ本体 52の長手方向 Aに沿って実質的に平行に形成 してある。 襞状突起 56の横断面は、 F I G. ;!〜 3に示すように、 突起の頂部 で厚肉に成形してあり、 しかも、 これら襞状突起 56の長手方向 Aの略中央部 5 7で、 さらに厚肉となるように成形してある。 また、 これら襞状突起 56の長手 方向 Aの略中央部 57に対応する位置で、 ハブ 54には膨出部 59が形成してあ る。  In this embodiment, as shown in FIGS. 1 and 2, one semicircular wing of the disc-shaped hub 54 is formed so as to be elastically deformable, and three rows are formed on both sides of the fold-shaped projection 56. A receiving groove (recess) 58 is formed substantially parallel to the longitudinal direction A of the connector main body 52. The cross section of the fold 56 is FIG. As shown in FIGS. 3 to 3, the projections are formed to be thick at the tops, and furthermore, at the substantially central portion 57 in the longitudinal direction A of the fold-shaped projections 56, the projections are further formed to be thicker. A bulging portion 59 is formed in the hub 54 at a position corresponding to a substantially central portion 57 in the longitudinal direction A of the fold-shaped projection 56.
このため、 襞状突起 56の両側に形成される収容溝 58は、 F I G. 3 Aに示 すように、 外力が作用しない状態で、 底部ほど溝幅が広くなる。 収容溝 58の溝 幅は、 最も広い部分 (底部) で、 ガイ ドワイヤ 42の外径よりも広く、 好ましく は、 F I G. 5に示すバルーンカテーテル 2の外周を覆う F I G. 4に示す保護 チューブ 64の外径と同程度以上の溝幅である。 収容溝 58の底部には、 F I G. 5に示すバルーンカテーテル 2の使用に際して、 F I G. 1および F I G. 3に 示すように、 ガイ ドワイヤ 42の近位端部が溝の長手方向 Aに沿って着脱自在に 差し込まれて仮固定される。 また、 F I G. 5に示すバルーンカテーテル 2の使 用前の状態において、 F I G. 4に示すように、 渦巻き状に曲げられたバルーン カテーテル 2の外周を覆う保護チューブ 64の軸方向一部が着脱自在に差し込ま れて仮固定される。 For this reason, as shown in FIG. 3A, the accommodation groove 58 formed on both sides of the fold-shaped protrusion 56 has a groove width wider toward the bottom when no external force is applied. The groove width of the accommodation groove 58 is the widest part (bottom part) and is wider than the outer diameter of the guide wire 42, and preferably, the protective tube shown in FIG. 4 covering the outer periphery of the balloon catheter 2 shown in FIG. The groove width is about the same as or larger than the outer diameter of 64. When the balloon catheter 2 shown in FIG. 5 is used, the proximal end of the guide wire 42 extends in the longitudinal direction A of the groove as shown in FIG. 1 and FIG. 3 when the balloon catheter 2 shown in FIG. 5 is used. It is detachably inserted along and fixed temporarily. In addition, in the state before use of the balloon catheter 2 shown in FIG. 5, as shown in FIG. 4, a part of the protective tube 64 covering the outer periphery of the spirally bent balloon catheter 2 is partially axially covered. Removably insert Is temporarily fixed.
F I G. 1および F I G. 3A、 Bに示すように、 収容溝 58および襞状突起 5 7が形成された側の円盤状ハブ 54の翼片の端部には、 ハブ 54の上表面に略 平行なフランジ 60が形成してあり、 このフランジ 60を指などで下方に押圧力 P 1を加えることで、 円盤状ハブ 54の翼片が弾性変形し、 収容溝 58の上部開 口の溝幅が広がり、 ガイ ドワイヤ 42や F I G. 4に示す保護チューブ 64を容 易に着脱可能になっている。  As shown in FI G. 1 and FI G. 3A and B, the end of the wing piece of the disc-shaped hub 54 on the side where the receiving groove 58 and the fold-shaped projection 57 are formed is attached to the upper surface of the hub 54. A substantially parallel flange 60 is formed. When a pressing force P1 is applied to the flange 60 downward with a finger or the like, the wings of the disc-shaped hub 54 are elastically deformed, and the upper opening groove of the accommodation groove 58 is formed. The width is widened, and the guide wire 42 and the protective tube 64 shown in FIG. 4 can be easily attached and detached.
なお、 円盤状ハブ 54 aの翼片の端部にフランジ 60を形成することなく、 F I G. 3 Cに示すように、 円盤状ハブ 54 aの両翼片の端部に、 コネクタ 50 a のハブ 54の裏面に対して略直角方向に突出する把持片 60 aを各々一体成形し ても良い。 この両把持片 60 aを両側から指で押圧力 P 2を加えることで、 円盤 状ハブ 54の翼片が弾性変形し、 収容溝 58の上部開口の溝幅が広がり、 ガイ ド ワイヤ 42や F I G. 4に示す保護チューブ 64を容易に着脱することができる。 また、 F I G. 3 Cに示すコネクタ 50 aでは、 コネクタ本体 52 aを、 円盤状 ハブ 54 aと一体に成形してある。 また、 上述した実施形態では、 収容溝 58を 三列としたが、 操作性の面からは、 通常 2列が好ましい。  In addition, without forming the flange 60 at the end of the wing piece of the disc-shaped hub 54a, as shown in FIG. 3C, the hub of the connector 50a is attached to the end of the wing piece of the disc-shaped hub 54a. The gripping pieces 60a projecting in a direction substantially perpendicular to the back surface of the 54 may be integrally formed. By applying a pressing force P2 to both gripping pieces 60a from both sides with fingers, the wings of the disc-shaped hub 54 are elastically deformed, the width of the upper opening of the accommodation groove 58 is widened, and the guide wire 42 and the FI The protective tube 64 shown in G. 4 can be easily attached and detached. In the connector 50a shown in FIG. 3C, the connector body 52a is formed integrally with the disc-shaped hub 54a. Further, in the above-described embodiment, the accommodation grooves 58 are formed in three rows, but from the viewpoint of operability, usually two rows are preferable.
次に、 F I G. 5に示す実施形態のバルーンカテーテル 2を用いて、 PTCA 治療を行う方法にっ 、て説明する。  Next, a method of performing PTCA treatment using the balloon catheter 2 of the embodiment shown in FIG. 5 will be described.
使用前の状態では、 F I G. 5に示すバル一ンカテーテル 2のバルーン部 4は、 収縮されて、 カテーテル管 6の外周に折り畳まれている。 また、 ガイ ドワイヤ 4 2は、 ガイ ドワイヤ用ルーメン 1 5内に挿入されておらず、 バルーンカテーテル 2とは別に梱包されている。 しかも、 バルーン部 4が折り畳まれたカテーテル管 6は、 F I G. 4に示すように、 保護チューブ 64の内部に揷入してあり、 その 保護チューブ 64の内部は、 生理食塩水などの保護液が充填してあり、 バルーン カテーテル 2を、 汚れや埃から保護している。 特に本実施形態では、 バルーン力 テーテル 2の近位端部に装着してあるコネクタ 50の円盤状ハブ 54の片翼には、 三列の収容溝 58が形成してある。 このため、 これらの収容溝 58に、 渦巻き状 に卷かれた保護チューブ 64の軸方向一部を、 コネクタ 50の収容溝 58に重な る位置で、 それぞれ着脱自在に挿入して仮固定することができる。 その結果、 細 長いカテーテル 2が挿入してある保護チューブ 6 4が渦巻き状に曲げられてコネ クタに対して仮固定され、 保護チューブ 6 4がばらけることがなくなる。 したが つて、 持ち運びが容易になると共に、 バルーンカテーテル 2の梱包材料の削減が 可能になると共に、 梱包も容易になる。 Before use, the balloon portion 4 of the balloon catheter 2 shown in FIG. 5 is contracted and folded around the catheter tube 6. Further, the guide wire 42 is not inserted into the guide wire lumen 15 and is packaged separately from the balloon catheter 2. Moreover, the catheter tube 6 in which the balloon portion 4 is folded is inserted into the inside of the protective tube 64 as shown in FIG. 4, and the inside of the protective tube 64 is filled with a protective solution such as saline. The balloon catheter 2 is protected from dirt and dust. In particular, in this embodiment, one row of the disc-shaped hub 54 of the connector 50 attached to the proximal end of the balloon force catheter 2 has three rows of receiving grooves 58 formed therein. For this reason, a part of the protection tube 64 wound spirally in these housing grooves 58 is detachably inserted and temporarily fixed at a position overlapping the housing groove 58 of the connector 50. Can be. As a result, The protective tube 64 into which the long catheter 2 is inserted is bent in a spiral shape and temporarily fixed to the connector, so that the protective tube 64 is not separated. Therefore, it is easy to carry, the packaging material for the balloon catheter 2 can be reduced, and the packaging becomes easy.
バルーンカテーテル 2の使用に際しては、 まず、 保護チューブ 6 4からバル一 ンカテーテル 2を取り出し、 バルーンカテーテル 2内の空気をできる限り除去す る。 そこで、 F I G . 5に示すコネクタ 5 0の膨張ポート 1 6には、 シリンジな どの吸引 ·注入手段を取り付け、 シリンジ内に、 たとえばヨウ素含有血液造影剤 などの流体を入れ、 吸引および注入を繰り返し、 第 2ルーメン 1 4およびバル一 ン部 4内の空気を流体と置換する。  When using the balloon catheter 2, first, the balloon catheter 2 is taken out of the protective tube 64, and air in the balloon catheter 2 is removed as much as possible. Therefore, a suction / injection means such as a syringe is attached to the expansion port 16 of the connector 50 shown in FIG. 5, and a fluid such as an iodine-containing blood contrast agent is put into the syringe, and suction and injection are repeated. The air in the second lumen 14 and the balloon section 4 is replaced with fluid.
バルーンカテーテル 2を動脈血管内に挿入するには、 まず、 セルジンガー法な どにより、 血管内にガイ ドカテーテル用ガイ ドワイヤ (図示せず) を、 その先端 がたとえば心臓の近くまで届くように挿入する。 その後、 ガイ ドカテーテル用ガ ィ ドワイヤに沿って、 F I G . 6に示すガイ ドカテーテル 3 2を、 動脈血管 3 4 内に挿入し、 その先端を狭窄部 3 6を有する心臓 3 8の冠動脈入口 4 0に位置さ せる。 なお、 狭窄部 3 6は、 たとえば血栓または動脈硬化などにより形成される。 次に、 ガイ ドカテーテル用ガイ ドワイヤのみを抜き取り、 それよりも細いバル ーンカテーテル用ガイ ドワイヤ 4 2をガイ ドカテーテル 3 2に沿って挿入し、 そ の先端を狭窄部 3 6を通過する位置まで差し込む。  In order to insert the balloon catheter 2 into the arterial blood vessel, first, a guide wire for a guide catheter (not shown) is inserted into the blood vessel by the Seldinger method or the like so that the distal end thereof reaches, for example, near the heart. . Thereafter, a guide catheter 32 shown in FIG. 6 is inserted into the arterial blood vessel 34 along the guide wire for the guide catheter, and the distal end thereof is inserted into the coronary artery entrance 4 of the heart 38 having a stenosis part 36. Position at 0. The stenosis portion 36 is formed by, for example, thrombus or arteriosclerosis. Next, pull out only the guide wire for the guide catheter, insert a guide wire 42 for the balloon catheter that is thinner along the guide catheter 32, and insert the distal end of the guide wire to a position where it passes through the stenosis 36. .
その後、 ガイ ドワイヤ 4 2の遠位端を、 F I G . 5に示すバルーンカテーテル 2の遠位開口端 2 0に差し込み、 第 1ルーメン 1 2の遠位端側であるガイ ドワイ ャ用ルーメン 1 5内に通し、 開口部 1 0から引き出す。 そして、 バルーン部 4が 折り畳まれた状態で、 バルーンカテーテル 2を、 ガイ ドワイヤ 4 2に沿って、 F I G . 6に示すガイ ドカテーテル 3 2內に通す。 そして、 バルーンカテーテル 2 のバルーン部 4を、 F I G . 6に示すように、 狭窄部 3 6の手前まで差し込む。 その後、 F I G . 7 Aおよび Bに示すように、 バルーンカテーテル 2の折り畳 まれたバルーン部 4をガイ ドワイヤ 4 2に沿って、 狭窄部 3 6間に差し込む。 次に、 F I G . 7 Cに示すように、 バルーン部 4の位置を X線透視装置などで 観察しながら、 狭窄部 3 6の中央部にバルーン部 4を正確に位置させる。 その位 置でバルーン部 4を膨らますことにより、 血管 3 2の狭窄部 3 6を広げ、 良好な 治療を行うことができる。 なお、 バルーン部 4を膨らますには、 F I G . 5に示 す膨張ポート 1 6から第 2ルーメン 1 4を通して、 バルーン部 4内に流体を注入 することにより行う。 Thereafter, the distal end of the guide wire 42 is inserted into the distal open end 20 of the balloon catheter 2 shown in FIG. 5, and the inside of the guide wire lumen 15 on the distal end side of the first lumen 12 is inserted. And pull it out of the opening 10. Then, with the balloon portion 4 folded, the balloon catheter 2 is passed through a guide catheter 32 shown in FIG. 6 along a guide wire 42. Then, as shown in FIG. 6, the balloon portion 4 of the balloon catheter 2 is inserted to a position just before the stenosis portion 36. Then, as shown in FIGS. 7A and 7B, the folded balloon portion 4 of the balloon catheter 2 is inserted between the stenosis portions 36 along the guide wire 42. Next, as shown in FIG. 7C, the balloon portion 4 is accurately positioned at the center of the stenosis portion 36 while observing the position of the balloon portion 4 with an X-ray fluoroscope or the like. About that By inflating the balloon portion 4 with the device, the stenotic portion 36 of the blood vessel 32 can be expanded, and good treatment can be performed. The balloon section 4 is inflated by injecting a fluid into the balloon section 4 from the inflation port 16 shown in FIG. 5 through the second lumen 14.
この膨張時間は、 特に限定されないが、 たとえば約 1分間程度である。 その後、 迅速にバル一ン部 4から流体を抜いてバル一ン部を収縮させ、 拡張された狭窄部 3 6の末梢側の血流を確保する。 狭窄部 3 6の拡張は、 血管 3 4を傷つけないよ うに、 段階的に行う必要があり、 最初は小さい外径のバルーン部 4を持つバル一 ンカテーテル 2をガイ ドワイヤ 4 2に沿って挿入し、 順次大きな外径のバルーン 部 4を持つバルーンカテーテル 2と交換する。 その際に、 本実施形態に係るバル ーンカテーテル 2は、 モノレール方式のバルーンカテーテルであることから、 ガ ィ ドワイヤ用ルーメン 1 5の長さに相当する部分より僅かに長い程度にガイ ドヮ ィャ 4 2の近位端部を体外側に延ばしておくだけで、 バルーンカテーテルの交換 作業を行うことができる。  The expansion time is not particularly limited, but is, for example, about 1 minute. Thereafter, the fluid is quickly evacuated from the balloon portion 4 to contract the balloon portion and secure the blood flow on the peripheral side of the dilated stenosis portion 36. The stenosis 36 must be expanded stepwise so as not to injure the blood vessel 34.At first, the balloon catheter 2 having the balloon portion 4 with a small outer diameter is inserted along the guide wire 42. Then, the balloon catheter 2 is sequentially replaced with a balloon catheter 2 having a balloon portion 4 having a larger outer diameter. At this time, since the balloon catheter 2 according to the present embodiment is a monorail balloon catheter, the guide catheter 4 is slightly longer than a portion corresponding to the length of the guide wire lumen 15. The balloon catheter can be exchanged simply by extending the proximal end of 2 outside the body.
このような操作において、 カテーテル管 6の遠位端側に形成してある開口部 1 0 (体内に位置する) から近位端側に飛び出ているガイ ドワイヤ 4 2の近位端部 (体外に位置する) を、 F I G . 1に示すように、 体外に位置するカテーテル用 コネクタ 5 0に形成してある何れかの収容溝 5 8内に着脱自在に装着して仮固定 することができる。 この場合、 ガイ ドワイヤ 4 2の近位端部は、 収容溝 5 8の長 手方向に沿って自由に移動可能である。 したがって、 本実施形態に係るバルーン カテーテル 2においては、 バルーンカテーテル 2のコネクタ 5 0とは別に患者の 体外に延びているガイ ドワイヤ 4 2の近位端部がぶらつくことがなくなり、 ノくル ーンカテーテル 2の操作性が向上する。  In such an operation, the proximal end (outside the body) of the guide wire 42 protruding to the proximal end side from the opening 10 (located in the body) formed on the distal end side of the catheter tube 6. 1 can be removably mounted and temporarily fixed in any of the accommodation grooves 58 formed in the catheter connector 50 located outside the body, as shown in FIG. In this case, the proximal end of the guide wire 42 is freely movable along the longitudinal direction of the accommodation groove 58. Therefore, in the balloon catheter 2 according to the present embodiment, the proximal end of the guide wire 42 extending outside the patient separately from the connector 50 of the balloon catheter 2 does not fluctuate, and the no-run catheter 2 Operability is improved.
また、 本実施形態に係る力テーテル管 6を有するバル一ンカテーテル 2では、 カテーテル管 6の断面外形形状が、 F I G . 5 Bに示すように、 Y軸方向に細長 い形状を持ち、 且つ Y軸方向に沿って 2つのルーメン 1 2, 1 4が形成してある ので、 Y軸に垂直な X軸方向の外径を小さくすることができ、 カテーテル管の断 面における X軸方向の無駄な肉厚部を無くすことができる。 このため、 力テーテ ル管の可撓性が、 特に X軸方向において極めて向上する。 しかも、 本実施形態では、 極めて柔軟な材料で構成する手段によらず、 カテー テル管 6の断面形状を工夫する手段により可撓性を高めているので、 軸方向の剛 性を、 ある程度保持することができる。 その結果、 押し込み性 (腰の強さ Zプッ シャプリティ) の低下は少なく、 特に屈曲した血管などへのカテーテル管 6の挿 入性および追随性が向上する。 また、 本実施形態では、 カテーテル管に形成され た第 1ルーメン 1 2の近位端側に位置する密閉ルーメン 1 7内に補強ワイヤなど の補強部材を挿入することもできるので、 その場合には、 カテーテル管 6の近位 端側の押し込み性がさらに向上する。 In the balloon catheter 2 having the force catheter tube 6 according to the present embodiment, the cross-sectional outer shape of the catheter tube 6 has an elongated shape in the Y-axis direction as shown in FIG. Since two lumens 12 and 14 are formed along the axial direction, the outer diameter in the X-axis direction perpendicular to the Y-axis can be reduced, and wasteful X-axis direction at the cross section of the catheter tube can be achieved. Thick portions can be eliminated. For this reason, the flexibility of the force tail tube is greatly improved, especially in the X-axis direction. Moreover, in the present embodiment, the flexibility is enhanced by means of devising the cross-sectional shape of the catheter tube 6 without using a means made of an extremely flexible material, so that the axial rigidity is maintained to some extent. be able to. As a result, there is little decrease in pushability (lumbar strength Z pusher pretty), and particularly, the insertability and followability of the catheter tube 6 into a bent blood vessel or the like is improved. In the present embodiment, a reinforcing member such as a reinforcing wire can be inserted into the sealed lumen 17 located on the proximal end side of the first lumen 12 formed in the catheter tube. The pushability of the catheter tube 6 on the proximal end side is further improved.
また、 本実施形態のカテーテル管 6は、 軸方向に均一な可撓性を持ち、 異種材 料を接続して構成していないので、 カテーテル管 6の長手方向に沿った急激な固 さ変化がなく、 操作性が良い。 また、 カテーテル管 6の製造に際して接続工程を 必要としないので、 押出成形などにより極めて容易にカテーテル管 6を製造する ことができる。  Further, since the catheter tube 6 of the present embodiment has uniform flexibility in the axial direction and is not configured by connecting dissimilar materials, a sudden change in the hardness of the catheter tube 6 along the longitudinal direction of the catheter tube 6 occurs. No operability. In addition, since a connecting step is not required in manufacturing the catheter tube 6, the catheter tube 6 can be manufactured extremely easily by extrusion or the like.
さらに、 本実施形態に係るバルーンカテーテル 2は、 F I G . 6に示すガイデ ィングカテーテル 3 2の内部に挿入されて目的とする位置まで案内されるが、 そ の場合において、 次に示す作用を奏する。 すなわち、 本実施形態に係る力テーテ ル管 6の断面が非円形であるため、 ガイディングカテーテル 3 2の内部において、 ガイディングカテーテル 3 2の内壁との隙間を大きくすることができる。 その結 果、 その隙間を通して X線造影剤を注入する際に、 その流路抵抗が少なくなり、 造影剤の注入が容易となるという効果を奏する。  Furthermore, the balloon catheter 2 according to the present embodiment is inserted into the inside of the guiding catheter 32 shown in FIG. 6 and guided to a target position. In that case, the following operation is performed. That is, since the cross section of the force tail tube 6 according to the present embodiment is non-circular, the gap between the inside of the guiding catheter 32 and the inner wall of the guiding catheter 32 can be increased. As a result, when the X-ray contrast medium is injected through the gap, the flow path resistance is reduced and the contrast medium is easily injected.
(第 2実施形態)  (Second embodiment)
F I G . 8 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 8A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G . 8 Aに示す本実施形態のコネクタ 5 0 bは、 前記第 1実施形態のコネ クタ 5 0の変形例であり、 ハブ 5 4 bの構成のみが相違し、 その他の部分の構成 は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみについて 説明する。  8A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54b is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
本実施形態のハブ 5 4 bは、 全体としては円盤形状であり、 固定片 6 5と締め 付け片 6 6とを有し、 固定片 6 5のみがチューブ状のコネクタ本体 5 2の外周に 対して固定してある。 締め付け片 6 6は、 コネクタ本体 5 2の外周に対して軸芯 回り方向 rに回動移動自在に装着してあり、 締め付け片 6 6に形成された開口部The hub 54 b of the present embodiment has a disk shape as a whole, has a fixing piece 65 and a fastening piece 66, and only the fixing piece 65 is provided on the outer periphery of the tubular connector body 52. It is fixed for. The fastening piece 66 is attached to the outer periphery of the connector body 52 so as to be rotatable in the direction r around the axis, and the opening formed in the fastening piece 66 is provided.
6 7の内部に、 固定片 6 5の弾性変形可能翼片が着脱自在に収容される。 The elastically deformable wing piece of the fixed piece 65 is detachably accommodated inside 67.
三列の収容溝 5 8および二列の襞状突起 5 6は、 固定片 6 5の弾性変形可能翼 片側に一体に成形してあり、 外力を受けない状態では、 F I G . 8 Cに示すよう に、 収容溝 5 8の上部開口は最大限に開くように成形してある。 固定片 6 5にお ける収容溝 5 8が形成された翼片の端壁には、 係合溝 6 8が形成してある。 この 係合溝 6 8には、 締め付け片 6 6の開口部 6 7の内壁面に形成してある内方凸部 The three rows of accommodating grooves 58 and the two rows of fold projections 56 are integrally formed on one side of the elastically deformable wing of the fixed piece 65, and when no external force is applied, as shown in FIG. 8C. In addition, the upper opening of the accommodation groove 58 is formed so as to open as much as possible. An engagement groove 68 is formed on the end wall of the wing piece where the accommodation groove 58 in the fixed piece 65 is formed. The engagement groove 68 has an inner convex portion formed on the inner wall surface of the opening 67 of the fastening piece 66.
7 0が着脱自在に係合するようになつている。 70 are detachably engaged.
締め付け片 6 6の上面が固定片 6 5の上面と略平行となる回動位置で、 F I G . At the rotation position where the upper surface of the fastening piece 66 is substantially parallel to the upper surface of the fixing piece 65, FIG.
8 Bに示すように、 締め付け片 6 6の內方凸部 7 0が係合溝 6 8に対して係合し、 固定片 6 5の翼片を弾性変形させ、 収容溝 5 8の上部開口の溝幅を狭めることに なる。 8B, the convex portions 70 of the tightening pieces 66 engage with the engaging grooves 68 to elastically deform the wing pieces of the fixing pieces 65, and the upper opening of the accommodation groove 58 is formed. The width of the groove will be reduced.
本実施形態に係るバルーンカテーテル用コネクタ 5 0 bは、 ガイ ドワイヤ 4 2 ( F I G . 1参照) などを収容溝 5 8に対して着脱する際に、 収容溝 5 8の上部 開口の溝幅を広げるための機構が、 前記第 1実施形態のコネクタ 5 0と異なるの みであり、 その他の構造および作用は同一である。 なお、 本実施形態のコネクタ 5 0 bでは、 ハブ 5 4 bに形成してある収容溝 5 8の上部開口が幅広く開いた状 態の形 (F I G . 8 C ) で、 射出成形またはその他の成形方法により成形される ため、 成型時の型抜き作業が容易である。  The connector 50b for a balloon catheter according to the present embodiment increases the groove width of the upper opening of the accommodation groove 58 when the guide wire 42 (see FIG. 1) or the like is attached to or detached from the accommodation groove 58. The only difference is a mechanism for performing the same operation as the connector 50 of the first embodiment, and other structures and operations are the same. In the connector 50b of the present embodiment, injection molding or other molding is performed in a state where the upper opening of the accommodation groove 58 formed in the hub 54b is wide open (FIG. 8C). Since it is formed by the method, the die-cutting work at the time of molding is easy.
(第 3実施形態)  (Third embodiment)
F I G . 9 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  9A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of a main part of the connector.
F I G . 9 Aに示す本実施形態のコネクタ 5 0 cは、 前記第 1実施形態のコネ クタ 5 0の変形例であり、 ハブ 5 4 cの構成のみが相違し、 その他の部分の構成 は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみについて 説明する。  9A shown in FIG. 9A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54c is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
本実施形態のハブ 5 4 cは、 全体としては円盤形状であり、 一方の半円部を構 成する固定翼片 7 1と、 他方の半円部を構成する一対の把持翼片 7 2とを有し、 これらは一体に成形してある。 一対の把持翼片 7 2は、 固定翼片 7 1からコネク タ本体 5 2の外周を挟むように分岐し、 F I G . 9 Cに示すように、 撓むように 弾性変形し、 フック部材 7 4との係合が外れた状態で、 把持片 7 2相互が離れる 方向に開き、 収容空間 (収容凹所) 5 8 cを開くように構成してある。 The hub 54 c of the present embodiment has a disk shape as a whole, and includes a fixed wing piece 71 constituting one semicircular portion and a pair of gripping wing pieces 72 constituting the other semicircular portion. Has, These are integrally molded. The pair of gripping wing pieces 72 branch off from the fixed wing piece 71 so as to sandwich the outer periphery of the connector body 52, and are elastically deformed so as to be bent as shown in FIG. In a state where the engagement is released, the grip pieces 72 are opened in a direction in which the grip pieces 72 are separated from each other, and the accommodation space (accommodation recess) 58 c is opened.
フック部材 7 4は、 回動軸 7 5を介して一方の把持翼片 7 2の翼端部に回動自 在に装着してあり、 他方の把持翼片 7 2の翼端部に形成してある係合溝 7 8に対 して着脱自在に係合する係合突起 7 6を有する。 相互に向き合う一対の把持翼片 7 2の翼端部対向面には、 内方突起 7 7が形成してあり、 フック部材 7 4の係合 突起 7 6が係合溝 7 8に対して係合した状態で、 把持翼片 7 2相互を撓み弾性変 形させ、 F I G . 9 Bに示すように、 突起 7 7相互が最大限に近づき、 収容空間 5 8 cの幅を狭めるようになっている。  The hook member 74 is rotatably attached to the wing end of one gripping wing piece 72 via a rotating shaft 75, and is formed on the wing end of the other gripping wing piece 72. It has an engagement projection 76 that detachably engages with the engagement groove 78. An inward projection 77 is formed on the wing end facing surface of the pair of gripping wing pieces 72 facing each other, and the engagement projection 76 of the hook member 74 is engaged with the engagement groove 78. In the combined state, the gripping wing pieces 72 are flexed and elastically deformed, and as shown in FIG. 9B, the projections 7 7 approach each other as much as possible, and the width of the accommodation space 58c is reduced. I have.
なお、 把持翼片 7 2, 7 2の間に形成される収容空間 5 8 cは、 コネクタ本体 5 2の長手方向に沿って実質的に平行な方向に貫通しており、 フック部材 7 4の 係合突起 7 6が係合溝 7 8に対して係合した状態で、 把持翼片 7 2相互を撓み弾 性変形させ、 F I G . 9 Bに示すように、 収容空間 5 8 c内に、 保護チューブ 6 4などを仮固定可能になっている。  The housing space 58 c formed between the gripping wing pieces 72, 72 penetrates in a direction substantially parallel to the longitudinal direction of the connector body 52, and With the engagement projections 76 engaged with the engagement grooves 78, the gripping wing pieces 72 are flexed and elastically deformed to each other, as shown in FIG. 9B, in the accommodation space 58c. The protection tube 64 can be temporarily fixed.
本実施形態に係るバルーンカテーテル用コネクタ 5 0 cは、 ガイ ドワイヤ 4 2 The balloon catheter connector 50 c according to the present embodiment includes a guide wire 42.
( F I G . 1参照) や保護チューブ 6 4などを仮固定する部分が、 収容溝ではな く、 把持翼片 7 2, 7 2の間に形成された収容空間 5 8 cである点が、 前記第 1 実施形態のコネクタ 5 0と異なるのみであり、 その他の構造および作用は同一で ある。 なお、 本実施形態のコネクタ 5 0 cのハブ 5 4 cは、 その形が単純であり、 射出成形またはその他の成形方法により容易に成形される。 (See FIG. 1) and the part where the protective tube 64 is temporarily fixed is not the accommodation groove but the accommodation space 58 c formed between the gripping wing pieces 72, 72. The only difference is the connector 50 of the first embodiment, and the other structures and operations are the same. The hub 54c of the connector 50c of the present embodiment has a simple shape, and is easily formed by injection molding or another molding method.
(第 4実施形態)  (Fourth embodiment)
F I G . 1 0 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 10A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G . 1 0 Aに示す本実施形態のコネクタ 5 0 dは、 前記第 3実施形態のコ ネクタ 5 0 cの変形例であり、 ハブ 5 4 dの構成のみが相違し、 その他の部分の 構成は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみにつ いて説明する。 本実施形態のハブ 54 dは、 全体としては円盤形状であり、 ハブ 54 dの一方 の半円状翼部には、 積層方向に三枚の把持翼片 72 dが形成してあり、 これらの 間に二つの収容空間 58 dが形成してある。 収容空間 58 dは、 コネクタ本体 5 2の長手方向に沿って貫通している。 The connector 50d of the present embodiment shown in FIG. 10A is a modified example of the connector 50c of the third embodiment, except for the configuration of the hub 54d, and the configuration of the other parts. Are the same, so the description of the overlapping parts will be omitted, and only the different parts will be described. The hub 54d of the present embodiment has a disk shape as a whole, and three semi-circular wings of the hub 54d are formed with three gripping blade pieces 72d in the stacking direction. Two storage spaces 58 d are formed between them. The accommodation space 58d penetrates along the longitudinal direction of the connector main body 52.
ハブ 54 dの他方の半円状翼部には、 二枚の翼片 83, 83がコネクタ 52の 外周を挟むように一体成形してある。 これら翼片 83, 83には、 切り欠き 8 1 が形成してあり、 ここに円柱形状の差し込み部材 80が着脱自在に装着され、 翼 片 83, 83の間の隙間 84には、 差し込み部材 80の周壁面に形成してある突 起 82が着脱自在に挿入可能になっている。  On the other semicircular wing portion of the hub 54d, two wing pieces 83, 83 are integrally formed so as to sandwich the outer periphery of the connector 52. A cutout 81 is formed in each of the wing pieces 83, 83, and a cylindrical insertion member 80 is removably attached thereto. A gap 84 between the wing pieces 83, 83 is provided with an insertion member 80. A protrusion 82 formed on the peripheral wall surface of the housing can be detachably inserted.
この差し込み部材 80の突起 82が翼片 83, 83の間の隙間 84に差し込ま れた状態では、 F I G. 1 O Bに示すように、 隙間 84が広がる方向に翼片 83, 83が弾性変形し、 その結果、 これらの翼片 83, 83と一体に成形された複数 の把持翼片 72 dも弾性変形し、 収容空間 58 dの幅を狭める。 なお、 各把持翼 片 72 dの翼部先端には、 ス トツバ用突起 77 dが形成してあり、 各収容空間 5 8 dの幅が狭められすぎないようにしてある。 これら収容空間 58 dには、 F I G. 1に示すガイ ドワイヤ 42や F I G. 4に示す保護チューブ 64が差し込ま れる。  When the projection 82 of the insertion member 80 is inserted into the gap 84 between the wing pieces 83, 83, the wing pieces 83, 83 are elastically deformed in the direction in which the gap 84 expands, as shown in FIG. As a result, the plurality of gripping wing pieces 72d formed integrally with these wing pieces 83, 83 are also elastically deformed, and the width of the accommodation space 58d is reduced. In addition, at the tip of the wing portion of each gripping wing piece 72d, a projection 77d for a stove is formed so that the width of each accommodation space 58d is not excessively narrowed. The guide wire 42 shown in FIG. 1 and the protective tube 64 shown in FIG. 4 are inserted into these accommodation spaces 58d.
これらガイ ドワイヤ 42や保護チューブ 64を着脱する際には、 F I G. 10 Cに示すように、 差し込み部材 80を翼片 83の切り欠き 8 1から取り出せば良 い。  When attaching and detaching the guide wire 42 and the protection tube 64, as shown in FIG. 10C, the insertion member 80 may be taken out from the notch 81 of the wing piece 83.
本実施形態に係るバルーンカテーテル用コネクタ 50 dは、 ガイ ドワイヤ 42 (F I G. 1参照) や保護チューブ 64などを仮固定する収容空間 58 dが複数 形成してある点が、 前記第 3実施形態のコネクタ 50 cと異なるのみであり、 そ の他の構造および作用は同一である。 なお、 本実施形態のコネクタ 50 dのハブ 54 dは、 その形が単純であり、 射出成形またはその他の成形方法により容易に 成形される。  The balloon catheter connector 50d according to the present embodiment is different from the third embodiment in that a plurality of accommodation spaces 58d for temporarily fixing the guide wire 42 (see FIG. 1) and the protective tube 64 are formed. Only the connector 50c is different from that of the connector 50c, and the other structure and operation are the same. The hub 54d of the connector 50d according to the present embodiment has a simple shape, and is easily formed by injection molding or another molding method.
(第 5実施形態)  (Fifth embodiment)
F I G. 1 1 Aは本発明の他の実施形態に係るバノ! /一ンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。 F I G . 1 1 Aに示す本実施形態のコネクタ 5 0 eは、 前記第 4実施形態のコ ネクタ 5 0 dの変形例であり、 ハブ 5 4 eの構成のみが相違し、 その他の部分の 構成は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみにつ いて説明する。 FIG. 11A is a perspective view of a connector for a vano / single catheter according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector. The connector 50e of the present embodiment shown in FIG. 11A is a modified example of the connector 50d of the fourth embodiment, only the configuration of the hub 54e is different, and the configuration of the other parts. Are the same, so the description of the overlapping parts will be omitted, and only the different parts will be described.
本実施形態のハブ 5 4 eは、 全体としては円盤形状であり、 ハブ 5 4 eの一方 の半円状翼部には、 積層方向に 2枚の把持翼片 7 2 eが形成してあり、 これらの 間に単一の収容空間 5 8 eが形成してある。 収容空間 5 8 eは、 コネクタ本体 5 2の長手方向に沿って貫通している。  The hub 54 e of the present embodiment has a disk shape as a whole, and has two semi-circular wing portions of the hub 54 e formed with two gripping blade pieces 72 e in the laminating direction. A single storage space 58 e is formed between them. The accommodation space 58 e penetrates along the longitudinal direction of the connector main body 52.
ハブ 5 4 eの他方の半円状翼部には、 二枚の翼片 8 3 e, 8 3 eがコネクタ 5 2の外周を挟むように一体成形してある。 これら翼片 8 3, 8 3の外周には、 F I G . 1 1 A , Bに示すように、 キャップ状のカバー部材 8 0 eが着脱自在に装 着される。 カバー部材 8 0 eには、 把持翼片 7 2 eの基端部まで延びる一対の押 圧片 8 2 e, 8 2 eがー体に成形してある。  On the other semicircular wing portion of the hub 54 e, two wing pieces 83 e and 83 e are integrally formed so as to sandwich the outer periphery of the connector 52. As shown in FIGS. 11A and 11B, a cap-shaped cover member 80e is detachably mounted on the outer periphery of the wing pieces 83 and 83. The cover member 80e is formed with a pair of pressing pieces 82e, 82e extending to the base end of the gripping blade piece 72e.
このカバー部材 8 0 eが翼片 8 3 e, 8 3 eを外側から挟むように覆い被せた 状態では、 F I G . 1 1 Bに示すように、 把持翼片 7 2 e, 7 2 eの基端部まで 延びる一対の押圧片 8 2 e, 8 2 eの間に、 把持翼片 7 2 e, 7 2 eの基端部を 挟み込み、 把持翼片 7 2 eを弾性変形させる。 その結果、 収容空間 5 8 eの幅を 狭める。 なお、 各把持翼片 7 2 eの翼部先端には、 ス トツバ用突起 7 7 eが形成 してあり、 各収容空間 5 8 eの幅が狭められすぎないようにしてある。 これら収 容空間 5 8 eには、 F I G . 1に示すガイ ドワイヤ 4 2や F I G . 4に示す保護 チューブ 6 4が差し込まれる。  In a state where the cover member 80 e covers the wing pieces 83 e and 83 e so as to sandwich them from the outside, as shown in FIG. 11B, the base of the gripping wing pieces 72 e and 72 e is formed. The base ends of the gripping wing pieces 72e, 72e are sandwiched between a pair of pressing pieces 82e, 82e extending to the ends, and the gripping wing pieces 72e are elastically deformed. As a result, the width of the accommodation space 58 e is reduced. At the tip of the wing portion of each gripping wing piece 72 e, a projection 77 e for stover is formed so that the width of each accommodation space 58 e is not excessively narrowed. Guide wires 42 shown in FIG. 1 and protection tubes 64 shown in FIG. 4 are inserted into these storage spaces 58 e.
これらガイ ドワイヤ 4 2や保護チューブ 6 4を着脱する際には、 F I G . 1 1 Cに示すように、 カバ一部材 8 0 eを翼片 8 3 e, 8 3 eから取り除けば良レ、。 そうすることで、 把持翼片 7 2 e, 7 2 eは、 元の形状に戻り、 収容空間 5 8 e を開くことになる。  When attaching and detaching the guide wire 42 and the protective tube 64, as shown in FIG. 11C, it is good to remove the cover member 80e from the wing pieces 83e and 83e. By doing so, the gripping wing pieces 7 2 e and 7 2 e return to their original shapes and open the accommodation space 58 e.
本実施形態に係るバルーンカテーテル用コネクタ 5 0 eは、 ガイ ドワイヤ 4 2 ( F I G . 1参照) や保護チューブ 6 4などを仮固定する収容空間 5 8 eを開閉 するための機構が、 前記第 4実施形態のコネクタ 5 0 dと異なるのみであり、 そ の他の構造および作用は同一である。 なお、 本実施形態のコネクタ 5 0 eのハブ P T/JP99/01346 The balloon catheter connector 50e according to the present embodiment includes a mechanism for opening and closing a storage space 58e for temporarily fixing a guide wire 42 (see FIG. 1), a protective tube 64, and the like. The only difference from the connector 50d of the embodiment is that the other structure and operation are the same. The hub of the connector 50e of the present embodiment PT / JP99 / 01346
5 4 eは、 その形が単純であり、 射出成形またはその他の成形方法により容易に 成形される。 54 e has a simple shape and is easily molded by injection molding or other molding methods.
(第 6実施形態)  (Sixth embodiment)
F I G . 1 2 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bおよび Cはそのコネクタの要部断面図である。  FIG. 12A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIGS. B and C are cross-sectional views of main parts of the connector.
F I G . 1 2 Aに示す本実施形態のコネクタ 5 0 f は、 前記第 5実施形態のコ ネクタ 5 0 eの変形例であり、 ハブ 5 4 f の構成のみが相違し、 その他の部分の 構成は、 同一であるので、 共通する部材については、 共通する部材数字を図面に 示し、 それらの説明は一部省略し、 相違する部分のみについて説明する。  The connector 50f of the present embodiment shown in FIG. 12A is a modified example of the connector 50e of the fifth embodiment, except for the configuration of the hub 54f, and the configuration of the other parts. Are the same, so for the common members, the common member numbers are shown in the drawings, their description is partially omitted, and only the differences are described.
本実施形態のハブ 5 4 f では、 カバー部材 8 0 f の差し込み穴の対向する内壁 面に、 一対の窪み 8 8を形成し、 これら窪み 8 8には、 それぞれ翼片 8 3 f , 8 In the hub 54 f of the present embodiment, a pair of recesses 88 are formed on the inner wall surfaces of the cover member 80 f facing the insertion holes, and these recesses 8 8 are provided with wing pieces 8 3 f and 8, respectively.
3 f の翼先端部の外表面に形成してある膨出部 8 6が嵌合するようになつている。 このように構成することで、 カバー部材 8 0 f の差し込み穴の内部に一対の翼片 8 3 f , 8 3 f を完全に差し込んだ状態で、 翼片 8 3 f , 8 3 f の膨出部 8 6が 窪み 8 8, 8 8に嵌合し、 操作者は、 手にクリック感を感じることができる。 The bulge 86 formed on the outer surface of the 3 f wing tip is fitted. With this configuration, the wing pieces 8 3 f, 8 3 f are bulged while the pair of wing pieces 8 3 f, 83 f are completely inserted into the insertion holes of the cover member 80 f. The part 86 fits into the depressions 88, 88, and the operator can feel a click feeling in his hand.
(第 7実施形態)  (Seventh embodiment)
F I G . 1 3 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはそのコネクタの分解斜視図である。  FIG. 13A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, and FIG. B is an exploded perspective view of the connector.
F I G . 1 3 Aに示す本実施形態のコネクタ 5 0 gは、 前記第 5実施形態のコ ネクタ 5 0 eの変形例であり、 ハブ 5 4 gの構成のみが相違し、 その他の部分の 構成は、 同一であるので、 共通する部材については、 共通する部材数字を図面に 示し、 それらの説明は一部省略し、 相違する部分のみについて説明する。  The connector 50 g of the present embodiment shown in FIG. 13A is a modified example of the connector 50 e of the fifth embodiment, except for the configuration of the hub 54 g, and the configuration of the other parts. Are the same, so for the common members, the common member numbers are shown in the drawings, their description is partially omitted, and only the differences are described.
本実施形態のハブ 5 4 gでは、 ハブ 5 4 gの一方の側に形成してある翼片 8 3 g, 8 3 gを、 扇状に成形し、 これら翼片 8 3 g, 8 3 gの上面が相互に異なる 角度を持たせてある。 また、 カバー部材 8 0 gに形成してある一対の押圧片 8 2 g, 8 2 gの先端部内側には、 突起 9 0, 9 0がそれぞれ形成してある。 ハブ 5 In the hub 54 g of this embodiment, the wing pieces 83 g and 83 g formed on one side of the hub 54 g are formed into a fan shape, and the wing pieces 83 g and 83 g are formed. The upper surfaces have different angles from each other. Further, protrusions 90, 90 are formed on the inside of the distal ends of the pair of pressing pieces 82g, 82g formed on the cover member 80g, respectively. Hub 5
4 gの他方の側には、 把持翼片 7 2 g, 7 2 gが形成してあり、 これらの間に、 収容空間 5 8 gが形成してある。 On the other side of 4 g, gripping wing pieces 72 g and 72 g are formed, and between these, a storage space 58 g is formed.
カバー部材 8 0 gが翼片 8 3 g , 8 3 gに取り付けられた状態で、 押圧片 8 2 g, 82 gの突起 90, 90は、 ハブ 54 gの他方の側に形成してある把持翼片 72 g, 72 gの外面に形成してある傾斜面 92, 92を押圧するようになって いる。 その結果、 収容空間 5 S gの幅が狭められ、 そこに F I G. 1に示すガイ ドワイヤ 42の一部や F I G. 4に示す保護チューブ 64の一部が仮固定される。 (第 8実施形態) With the cover member 80 g attached to the wing pieces 83 g and 83 g, the pressing piece 82 The projections 90, 90 of the g, 82 g press the inclined surfaces 92, 92 formed on the outer surface of the gripping blade pieces 72 g, 72 g formed on the other side of the hub 54 g. I have. As a result, the width of the accommodation space 5 Sg is reduced, and a part of the guide wire 42 shown in FIG. 1 and a part of the protective tube 64 shown in FIG. 4 are temporarily fixed there. (Eighth embodiment)
F I G. 14 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはコネクタの背面から見た斜視図、 同図 Cはコネクタのハブに 形成してある収容空間を開いた状態を示す斜視図、 同図 Dはその断面図、 同図 E は操作の状態を示す要部断面図である。  FIG. 14A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, FIG. 14B is a perspective view of the connector viewed from the back, and FIG. 14C is an accommodation space formed in the hub of the connector. Is a perspective view showing an opened state, FIG. D is a cross-sectional view thereof, and FIG. E is a cross-sectional view of a main part showing an operation state.
F I G. 14 Aに示す本実施形態のコネクタ 50 hは、 前記第 1実施形態のコ ネクタ 50の変形例であり、 ハブ 54 hの構成のみが相違し、 その他の部分の構 成は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみについ て説明する。  The connector 50h of the present embodiment shown in FIG. 14A is a modified example of the connector 50 of the first embodiment, except for the configuration of the hub 54h, and the configuration of the other parts is the same. Therefore, description of overlapping parts is omitted, and only different parts will be described.
本実施形態のハブ 54 hは、 全体としては円盤形状であり、 円盤状の固定板部 71と、 その固定板部 94に対して、 回動自在に装着してある半円盤状の可動板 部 96とを有し、 これらは別体に成形してある。 可動板部 96は、 コネクタ本体 52を中心として回動自在となっており、 固定板部 94は、 コネクタ本体 52に 対して固定してあり、 これら板部 94, 96の間に、 収容空間 58 hが形成して ある。  The hub 54h of the present embodiment has a disk shape as a whole, and has a disk-shaped fixed plate portion 71 and a semi-disk-shaped movable plate portion rotatably mounted on the fixed plate portion 94. 96, which are molded separately. The movable plate portion 96 is rotatable about the connector main body 52, and the fixed plate portion 94 is fixed to the connector main body 52, and a housing space 58 is provided between the plate portions 94 and 96. h is formed.
F I G. 14 A, Cに示すように、 固定板部 94の収容空間側表面には、 コネ クタ本体 52の長手方向に沿って略平行な三列の装着溝 98が形成してあり、 こ れら溝 98に沿って、 F I G. 1に示すガイ ドワイヤ 42の近位端や F I G. 4 に示す保護チューブ 64の一部などが装着されるようになっている。 また、 F I G. 14 B, Cに示すように、 この固定板部 94には、 三列の装着溝 98に対し て略直交するスリッ 卜 100が形成してある。  As shown in FI G. 14 A and C, three parallel rows of mounting grooves 98 are formed on the surface of the fixing plate 94 on the storage space side along the longitudinal direction of the connector body 52. Along the grooves 98, the proximal end of the guide wire 42 shown in FIG. 1 and a part of the protective tube 64 shown in FIG. 4 are mounted. Further, as shown in FIGS. 14B and 14C, the fixing plate portion 94 is formed with a slit 100 substantially orthogonal to the three rows of mounting grooves 98.
収容空間 58 hを開く場合には、 F I G. 14 Eに示すように、 指で可動板部 96の先端部に触れ、 F I G. 14 C, Dに示すように、 固定板部 94に対して 回動させればよい。 また、 収容空間 58 hを閉じる場合には、 その逆の動作を行 えばよレ、。 なお、 可動板部 96の基端部には、 F I G. 1 4 Dに示すように、 ス トツパ用突起 102が形成してあり、 可動板部 96の回動移動を制限し、 収容空 間 58 hが開きすぎないように構成してある。 When opening the housing space 58 h, touch the tip of the movable plate 96 with a finger as shown in FI G. 14 E, and move it to the fixed plate 94 as shown in FI G. 14 C and D. And rotate it. Also, when closing the housing space 58 h, the opposite operation should be performed. In addition, as shown in FIG. 14D, the base end of the movable plate 96 A top projection 102 is formed to limit the rotational movement of the movable plate portion 96 so that the housing space 58 h is not opened too much.
(第 9実施形態)  (Ninth embodiment)
F I G. 1 5 Aは本発明の他の実施形態に係るバルーンカテーテル用コネクタ の斜視図、 同図 Bはコネクタの平面図、 同図 Cはコネクタの収容空間をを開いた 状態を示す平面図である。  FIG. 15A is a perspective view of a balloon catheter connector according to another embodiment of the present invention, FIG. B is a plan view of the connector, and FIG. C is a plan view showing a state where a housing space of the connector is opened. It is.
F I G. 1 5 Aに示す本実施形態のコネクタ 50 iは、 前記第 1実施形態のコ ネクタ 50の変形例であり、 ハブ 54 iの構成のみが相違し、 その他の部分の構 成は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみについ て説明する。  The connector 50i of the present embodiment shown in FIG. 15A is a modified example of the connector 50 of the first embodiment. Only the configuration of the hub 54i is different. Since they are the same, the description of the overlapping parts will be omitted, and only the different parts will be described.
本実施形態のハブ 54 iは、 全体として、 操作者の片手で把持しやすい形状の グリップ部 (固定部) 1 03を有し、 このグリップ部 1 03がコネクタ本体 52 に対して固定してある。 このグリップ部 103には、 固定板部 (固定部) 94 i がー体に成形してあり、 この固定板部 94 iには、 回転軸 106を介して、 回転 摘み (可動部) 96 iが偏心して回転自在に装着してある。  The hub 54 i of the present embodiment has a grip portion (fixing portion) 103 of a shape that can be easily gripped by one hand of the operator as a whole, and the grip portion 103 is fixed to the connector body 52. . The grip portion 103 has a fixed plate portion (fixed portion) 94 i formed in a body, and the fixed plate portion 94 i has a rotary knob (movable portion) 96 i via a rotary shaft 106. It is mounted eccentrically and rotatably.
本実施形態では、 回転摘み 96 i とダリップ部 1◦ 3の側壁との間に、 収容空 間 58 iが形成してあり、 偏心して回転する回転摘み 96 iを、 固定板部 94 i に対して回転させることで、 収容空間 58 iの幅が広くなつたり狭くなつたりす るようにしてある。 すなわち、 回転摘み 96 iには、 その外周の一部に、 突起 1 08を形成し、 その突起 1 08と逆の外周位置に、 操作用凹凸部 104を形成し、 操作用凹凸部 1 04の近くで回転軸 1 06により回転摘み 96 iを固定板部 94 iに対して回転自在に装着する。 このように構成することで、 F I G. 1 5 A, Bに示すように、 突起 1 08がグリップ部 103に向き合う回転位置で、 収容空 間 58 iの幅が最も狭くなる。 この状態で、 F I G. 1に示すガイ ドワイヤ 42 の近位端部を仮固定したり、 F I G. 4に示す保護チューブ 64の一部を仮固定 したりすることができる。  In the present embodiment, an accommodation space 58i is formed between the rotary knob 96i and the side wall of the drip portion 1◦3, and the rotary knob 96i, which rotates eccentrically, is fixed to the fixed plate portion 94i. By rotating the housing space 58i, the width of the storage space 58i becomes wider or narrower. That is, on the rotary knob 96i, a projection 108 is formed on a part of the outer periphery, and an operation uneven portion 104 is formed at an outer circumferential position opposite to the protrusion 108, and the operation uneven portion 104 is formed. A rotatable knob 96i is attached to the fixed plate portion 94i so as to be freely rotatable by the rotating shaft 106 nearby. With this configuration, as shown in FIGS. 15A and 15B, the width of the accommodation space 58i becomes the narrowest at the rotational position where the projection 108 faces the grip portion 103. In this state, the proximal end of the guide wire 42 shown in FIG. 1 can be temporarily fixed, or a part of the protective tube 64 shown in FIG. 4 can be temporarily fixed.
また、 回転摘み 96 iの操作用凹凸部 1 04に指をかけて、 回転摘み 96 iを 回すことで、 F I G. 1 5 Cに示すように、 収容空間 58 iの幅が広がる。 この 状態で、 F I G. 1に示すガイ ドワイヤ 42の近位端部を着脱したり、 F I G. 4に示す保護チューブ 64の一部を着脱することができる。 In addition, by putting a finger on the operation uneven portion 104 of the rotary knob 96i and turning the rotary knob 96i, the width of the accommodation space 58i is widened as shown in FIG. 15C. In this state, the proximal end of the guide wire 42 shown in FIG. A part of the protection tube 64 shown in FIG. 4 can be detached.
本実施形態においては、 回転摘み 96 iの突起 108の先端壁面に、 F I G. In the present embodiment, the FIG.
1に示すガイ ドワイヤ 42などを案内するための溝 98 iが形成してあっても良 レヽ。 また、 グリップ部 103の壁面にも、 F I G. 1に示すガイ ドワイヤ 42な どを案内するための溝 1 10が形成してあっても良い。 A groove 98 i for guiding the guide wire 42 shown in 1 may be formed. Also, a groove 110 for guiding the guide wire 42 shown in FIG. 1 may be formed on the wall surface of the grip portion 103.
(第 10実施形態)  (Tenth embodiment)
F I G. 1 6は本発明の他の実施形態に係るバルーンカテーテル用コネクタの 斜視図、 F I G. 1 7は F I G. 1 6に示す XV I I—XV I I線に沿う要部断 面図、 F I G. 1 8はコネクタの要部平面図、 F I G. 1 9はコネクタの使用例 を示す斜視図である。  FIG. 16 is a perspective view of a balloon catheter connector according to another embodiment of the present invention, FIG. 17 is a cross-sectional view of a main part taken along line XV II-XV II shown in FIG. FIG. 18 is a plan view of a main part of the connector, and FIG. 19 is a perspective view showing an example of use of the connector.
F I G. 1 6に示す本実施形態のコネクタ 50 jは、 前記第 1実施形態のコネ クタ 50の変形例であり、 ハブ 54 j の構成のみが相違し、 その他の部分の構成 は、 同一であるので、 重複する部分の説明は省略し、 相違する部分のみについて 説明する。  The connector 50j of the present embodiment shown in FIG. 16 is a modified example of the connector 50 of the first embodiment, except for the configuration of the hub 54j, and the configuration of the other parts is the same. Therefore, the description of the duplicated parts is omitted, and only the differences are described.
本実施形態のハブ 54 jは、 全体としては円盤形状であり、 円盤状のハブ 54 jの片方の半円状翼部に、 F I G. 1 7および 1 8に示すように、 1の中央可撓 片 56 jおよび 2の側部可撓片 56 j ' が形成してあり、 これらの間に、 2列の 収容溝 (凹所) 58 jが形成してある。 可撓片 56 j , 56 j ' の少なくとも略 中央部 5 7 jでは、 その頂部において、 厚肉となる膨出部 1 26, 1 26' が成 形してある。 側部可撓片 56 j ' 56 j ' の外側には、 これら可撓片 56 Γ , 56 j ' が外側に撓むことを許容するスリッ ト 1 28が収容溝 58 j に連絡する ように形成してある。  The hub 54j of the present embodiment has a disk shape as a whole, and one semi-circular wing portion of the disk-shaped hub 54j has a center flexible as shown in FIGS. 17 and 18. Flexible pieces 56j and two side flexible pieces 56j 'are formed, and two rows of receiving grooves (recesses) 58j are formed between them. At least in the central portion 57 j of the flexible pieces 56 j, 56 j ′, thick bulges 126, 126 ′ are formed at the top. On the outside of the side flexible pieces 56j 'and 56j', a slit 128 allowing the flexible pieces 56 'and 56j' to bend outward is formed so as to communicate with the accommodation groove 58j. I have.
また、 このような形状の中央可撓片 56 jおよび 2の側部可撓片 56 j ' を射 出成形などによりハブ 54 j と一体に成形するために、 ハブ 54 jの裏面には、 铸抜き孔 1 20, 1 20が形成してある。 また、 ハブ 54 jの裏面には、 操作者 の手で持ち易くするために、 凹凸部 1 22を成形してある。 なお、 F I G. 1 7 中の符号 1 24で示す空間は、 ハブ 54 jの成形を容易にするための孔である。 本実施形態に係るバルーンカテーテル用コネクタ 50 j は、 F I G. 1 9に示 すようにカテーテル 6の外周を覆う保護チューブ 64などを収容溝 58 j に対し て着脱する際に、 収容溝 5 8 jの上部開口の溝幅を広げるための機構が、 前記第 1実施形態のコネクタ 5 0と異なり、 ハブ 5 4 j 自体を押圧して弾性変形させる 必要はない。 すなわち、 F I G . 1 9に示す保護チューブ 6 4や F I G . 1に示 すガイ ドワイヤ 4 2を、 収容溝 5 8 jに沿って押し込むのみで、 可撓片 5 6 j , 5 6 j ' が撓み変形して、 収容溝 5 8 j内に入り込む。 可撓片の中央部 5 7 j に おいて可撓片 5 6 j , 5 6 j , の頂部には膨出部 1 2 6, 1 2 6, が形成してあ るので、 F I G . 1 9に示す保護チューブ 6 4や F I G . 1に示すガイ ドワイヤ 4 2を収容溝 5 8 j内に一旦差し込んだ後は、 意図的に外そうとしない限りは外 れない。 Further, in order to form the central flexible piece 56j and the side flexible piece 56j 'of this shape integrally with the hub 54j by injection molding or the like, the rear surface of the hub 54j has Holes 120 and 120 are formed. In addition, a concave-convex portion 122 is formed on the rear surface of the hub 54j so as to be easily held by an operator. The space indicated by reference numeral 124 in FIG. 17 is a hole for facilitating molding of the hub 54j. As shown in FIG. 19, the balloon catheter connector 50 j according to the present embodiment is provided with a protection tube 64 covering the outer periphery of the catheter 6 and the like with respect to the accommodation groove 58 j. Unlike the connector 50 of the first embodiment, a mechanism for expanding the groove width of the upper opening of the housing groove 58 j when attaching and detaching the hub 54 j needs to elastically deform the hub 54 j by itself. Absent. That is, only by pushing the protective tube 64 shown in FIG. 19 or the guide wire 42 shown in FIG. 1 along the accommodation groove 58 j, the flexible pieces 56 j and 56 j ′ bend. It deforms and enters into the accommodation groove 58 j. Since the bulges 126, 126 are formed at the tops of the flexible pieces 56j, 56j in the central part 57j of the flexible piece, FIG. Once the protective tube 64 shown in Fig. 1 and the guide wire 42 shown in Fig. 1 are inserted into the accommodation groove 58j, they will not come off unless they are intentionally removed.
その他の構造および作用は、 前記第 1実施形態と同一である。  Other structures and operations are the same as those of the first embodiment.
なお、 本発明は、 上述した実施形態に限定されるものではなく、 本発明の範囲 内で種々に改変することができる。  Note that the present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the present invention.
たとえば、 本発明に係るカテーテル用コネクタが接続されるカテーテルとして は、上述したモノレール方式の P T C Aカテーテルに限定されず、オーバー 'ザ · ワイヤ方式の P T C Aバルーンカテーテルであっても良い。 または、 その他の力 テーテルであっても良い。 産業上の利用可能性  For example, the catheter to which the catheter connector according to the present invention is connected is not limited to the above-mentioned monorail type PTCA catheter, but may be an over-the-wire type PTCA balloon catheter. Alternatively, other powers may be used. Industrial applicability
本発明のカテーテル用コネクタは、 血管拡張用バルーンカテーテルの力テーテ ル用コネクタとして好適であり、 とくに、 モノレール方式の P T C Aバルーン力 テーテル用のコネクタ 0 . —として好適である。  The catheter connector of the present invention is suitable as a connector for a force catheter of a vascular dilatation balloon catheter, and is particularly suitable as a connector for a monorail type PTC A balloon force catheter.

Claims

請求の範囲 The scope of the claims
1 . 体内に挿入されるカテーテルの近位端部に具備してあるカテーテル用コネク タであって、 前記カテーテルの一部または前記カテーテルの付属部品の一部が着 脱自在に装着される収容凹所が形成してあることを特徴とするカテーテル用コネ クタ。 1. A catheter connector provided at a proximal end of a catheter to be inserted into a body, wherein a housing recess in which a part of the catheter or a part of an accessory part of the catheter is detachably mounted. A connector for a catheter, characterized in that a place is formed.
2 . 前記収容凹所は、 当該カテーテル用コネクタの本体の長手方向に沿って平行 な複数列の収容溝である請求の範囲 1に記載のカテーテル用コネクタ。  2. The catheter connector according to claim 1, wherein the housing recess is a plurality of rows of housing grooves parallel to a longitudinal direction of the main body of the catheter connector.
3 . 前記収容凹所は、 コネクタ本体の長手方向に沿って平行な複数列の収容溝で あり、 当該収容溝は、 前記カテーテル用コネクタの弾性変形可能部分に形成して あり、 当該弾性変形可能部分を外力により弾性変形させることで、 前記収容溝の 溝幅が広がるように構成してある請求の範囲 1から 2のいずれかに記載のカテー テル用コネクタ。  3. The accommodation recess is a plurality of rows of accommodation grooves parallel to the longitudinal direction of the connector main body, and the accommodation groove is formed in an elastically deformable portion of the catheter connector, and the elastically deformable portion is formed. 3. The catheter connector according to claim 1, wherein the portion is elastically deformed by an external force so that a groove width of the housing groove is widened.
4 . 前記収容凹所は、 前記カテーテル用コネクタを構成するハブに一体成形して ある複数の撓み変形可能な可撓片の間に形成してあり、 当該可撓片を一体成形す るために、 前記ハブには、 铸抜き孔が形成してある請求の範囲 1から 3のいずれ かに記載のカテーテル用コネクタ。  4. The accommodating recess is formed between a plurality of flexibly deformable flexible pieces integrally formed on a hub constituting the catheter connector. The catheter connector according to any one of claims 1 to 3, wherein a through hole is formed in the hub.
5 . 前記ハブは、 その外径は、 1 0〜1 0 O mmである請求の範囲 4に記載の力 テーテル用コネクタ。  5. The connector according to claim 4, wherein the hub has an outer diameter of 10 to 10 O mm.
6 . 前記収容凹所は、 当該カテーテル用コネクタの本体の長手方向に沿って平行 な方向に貫通している開閉自在な収容空間であって、 前記収容空間は、 力テーテ ル用コネクタと一体に成形してある少なく とも一対の把持片の間に形成される請 求の範囲 1から 5のいずれかに記載のカテーテル用コネクタ。  6. The accommodation recess is an openable and closable accommodation space penetrating in a direction parallel to the longitudinal direction of the main body of the catheter connector, and the accommodation space is integrated with the force-tail connector. The catheter connector according to any one of claims 1 to 5, wherein the catheter connector is formed between at least a pair of molded gripping pieces.
7 . 前記収容凹所は、 当該カテーテル用コネクタと一体に成形してある少なくと も一対の把持片の間に形成され、 前記把持片は、 橈むように弾性変形し、 前記力 テーテル用コネクタに対して、 回動自在または着脱自在に装着してあるフック部 材との係合が外れた状態で、 把持片相互が離れる方向に開くように構成してある 請求の範囲 1から 6のいずれかに記載のカテーテル用コネクタ。  7. The accommodation recess is formed between at least a pair of gripping pieces formed integrally with the catheter connector, and the gripping pieces are elastically deformed to bend, and the force with respect to the catheter connector. The gripping pieces are configured to open in a direction in which the gripping pieces are separated from each other in a state where the gripping pieces are disengaged from the hook members that are rotatably or detachably mounted. The connector for a catheter according to the above.
8 . 前記収容凹所は、 当該カテーテル用コネクタの本体の長手方向に沿って平行 な方向に貫通している開閉自在な複数の収容空間である請求の範囲 1から 7のい ずれかに記載のカテーテル用コネクタ。 8. The receiving recess is parallel to the longitudinal direction of the main body of the catheter connector. The catheter connector according to any one of claims 1 to 7, which is a plurality of openable and closable storage spaces penetrating in different directions.
9 . 前記収容凹所は、 当該カテーテル用コネクタと一体に成形してある少なくと も一対の把持片の間に形成され、 前記把持片は、 その基端部において弾性変形し、 前記カテーテル用コネクタに対して、 スライ ド移動自在または着脱自在に装着し てある差し込み部材またはカバー部材との係合が外れた状態で、 把持片相互が離 れる方向に開くように構成してある請求の範囲 1から 8のいずれかに記載のカテ 一テル用コネクタ。  9. The accommodation recess is formed between at least a pair of gripping pieces integrally formed with the catheter connector, and the gripping pieces are elastically deformed at a base end thereof, and the catheter connector Claim 1 wherein the grip pieces are opened in a direction in which the grip pieces are separated from each other in a state in which the grip pieces are disengaged from the insertion member or the cover member that is slidably or detachably mounted. 9. The connector for a catheter according to any one of items 1 to 8.
1 0 . 前記収容凹所は、 前記カテーテル用コネクタに対して固定してある固定板 部と、 前記カテーテル用コネクタに対して回動移動自在な可動板部との間に形成 された収容空間であって、 前記収容空間は、 前記可動板部を前記固定板部に対し て回動させることで、 前記収容空間を開閉可能にしてあり、 前記固定板部または 前記可動板部の対向する表面には、 当該カテーテル用コネクタ本体の長手方向と 平行な溝が形成してある請求の範囲 1から 9のいずれかに記載のカテーテル用コ ネクタ。  10. The housing recess is a housing space formed between a fixed plate portion fixed to the catheter connector and a movable plate portion rotatable with respect to the catheter connector. The accommodation space is configured such that the accommodation space can be opened and closed by rotating the movable plate portion with respect to the fixed plate portion, and is provided on a surface facing the fixed plate portion or the movable plate portion. The catheter connector according to any one of claims 1 to 9, wherein a groove parallel to a longitudinal direction of the catheter connector main body is formed.
1 1 . 前記カテーテル用コネクタは、 その形状は、 全体として円盤形状である請 求の範囲 1から 1 0のいずれかに記載のカテーテル用コネクタ。  11. The catheter connector according to any one of claims 1 to 10, wherein the catheter connector has a disk shape as a whole.
1 2 . 前記カテーテル用コネクタは、 当該カテーテル用コネクタの本体の外径が、 最大外径部分において 3〜 2 0 mmである請求の範囲 1カゝら 1 1のいずれかに記 載のカテーテル用コネクタ。  12. The catheter connector according to any one of claims 1 to 11, wherein the outer diameter of the main body of the catheter connector is 3 to 20 mm at a maximum outer diameter portion. connector.
1 3 . 血管などの体腔内に挿入され、 少なくとも 2つの第 1ルーメンと第 2ルー メンとが長手方向に沿って形成してあるカテーテル管と、  1 3. A catheter tube inserted into a body cavity such as a blood vessel and having at least two first lumens and second lumens formed along the longitudinal direction;
前記カテーテル管の遠位端部の外周に接続されて、 前記力テーテル管に形成さ れた第 2ルーメンと内部が連通し、 その第 2ルーメンを通して送られてくる流体 により外方に膨らむことが可能なバル一ン部とを有し、  A second lumen formed in the force catheter is connected to the outer periphery of the distal end of the catheter tube, and the inside communicates with the second lumen formed in the force catheter tube. The fluid may be swelled outward by a fluid sent through the second lumen. With a possible balloon part,
前記バルーン部の近位端が前記カテーテル管の外周に接合する部分から近位端 側に所定距離離れたカテーテル管の外周に、 前記第 1ルーメンに連通する開口部 が形成してあり、 当該開口部を通して、 ガイ ドワイヤの遠位端部が前記第 1ルー メン内に挿入されるバルーンカテーテルであって、 前記カテーテル管の近位端部に具備してあるカテーテル用コネクタには、 前記 開口部から近位端側に飛び出ているガイ ドワイヤの近位端部が着脱自在に装着さ れる収容凹所が形成してあることを特徴とするバルーン力テーテノレ。 An opening communicating with the first lumen is formed on the outer periphery of the catheter tube at a predetermined distance from the portion where the proximal end of the balloon portion is joined to the outer periphery of the catheter tube to the proximal end side, and the opening is formed. A balloon catheter through which the distal end of the guidewire is inserted into the first lumen; The catheter connector provided at the proximal end of the catheter tube has a receiving recess in which the proximal end of the guide wire projecting from the opening to the proximal end side is detachably mounted. Balloon power Tetenore characterized by having been done.
PCT/JP1999/001346 1998-03-19 1999-03-18 Catheter connector and balloon catheter WO1999047202A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/90940 1998-03-19
JP10090940A JPH11267226A (en) 1998-03-19 1998-03-19 Connector for catheter, and balloon catheter

Publications (1)

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WO1999047202A1 true WO1999047202A1 (en) 1999-09-23

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Cited By (8)

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WO2002015970A1 (en) * 2000-08-23 2002-02-28 Boston Scientific Limited Catheter having a shaft keeper
EP1306100A1 (en) * 2001-10-23 2003-05-02 Moynesign Limited Clip for catheter storing
WO2005011791A2 (en) * 2003-07-31 2005-02-10 Wilson-Cook Medical Inc. Wire guide holder
WO2005039681A1 (en) * 2003-10-16 2005-05-06 Minvasys Catheter system for stenting bifurcated vessels
WO2009039296A1 (en) * 2007-09-21 2009-03-26 Sabin Corporation Catheter components and assembly
US20100152613A1 (en) * 2008-12-11 2010-06-17 Shawn Ryan Clip for handling an endoscopic device
US8480629B2 (en) 2005-01-28 2013-07-09 Boston Scientific Scimed, Inc. Universal utility board for use with medical devices and methods of use
EP2478928A4 (en) * 2009-09-16 2017-08-23 Terumo Kabushiki Kaisha Catheter holder

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JP5124057B1 (en) * 2012-04-17 2013-01-23 誠 出原 Linear body operation aids
JP6105932B2 (en) * 2012-12-28 2017-03-29 テルモ株式会社 Catheter hub
CN108883252B (en) 2016-03-31 2021-06-18 奥林巴斯株式会社 Treatment tool for endoscope

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JPS58185212U (en) * 1982-06-02 1983-12-09 鶴田 勉 Intravenous indwelling needle with fixator
JPH0757247B2 (en) * 1985-03-14 1995-06-21 クリテイコン・リミテツド Catheter for intravascular use
JPH08280813A (en) * 1995-04-17 1996-10-29 Create Medic Kk Catheter sheath with catheter fixing tool

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS58185212U (en) * 1982-06-02 1983-12-09 鶴田 勉 Intravenous indwelling needle with fixator
JPH0757247B2 (en) * 1985-03-14 1995-06-21 クリテイコン・リミテツド Catheter for intravascular use
JPH08280813A (en) * 1995-04-17 1996-10-29 Create Medic Kk Catheter sheath with catheter fixing tool

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015970A1 (en) * 2000-08-23 2002-02-28 Boston Scientific Limited Catheter having a shaft keeper
US6551273B1 (en) 2000-08-23 2003-04-22 Scimed Life Systems, Inc. Catheter having a shaft keeper
EP1306100A1 (en) * 2001-10-23 2003-05-02 Moynesign Limited Clip for catheter storing
WO2005011791A2 (en) * 2003-07-31 2005-02-10 Wilson-Cook Medical Inc. Wire guide holder
WO2005011791A3 (en) * 2003-07-31 2005-08-25 Wilson Cook Medical Inc Wire guide holder
US7637863B2 (en) 2003-07-31 2009-12-29 Wilson-Cook Medical Inc. Wire guide holder
WO2005039681A1 (en) * 2003-10-16 2005-05-06 Minvasys Catheter system for stenting bifurcated vessels
US8480629B2 (en) 2005-01-28 2013-07-09 Boston Scientific Scimed, Inc. Universal utility board for use with medical devices and methods of use
WO2009039296A1 (en) * 2007-09-21 2009-03-26 Sabin Corporation Catheter components and assembly
US20110125133A1 (en) * 2007-09-21 2011-05-26 Sabin Corporation Catheter Components and Assembly
US20100152613A1 (en) * 2008-12-11 2010-06-17 Shawn Ryan Clip for handling an endoscopic device
EP2478928A4 (en) * 2009-09-16 2017-08-23 Terumo Kabushiki Kaisha Catheter holder

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