JP6046455B2 - Guide wire holder - Google Patents

Description

  The present invention is, for example, a guide that is fixed to a guide wire that is inserted into a tubular organ of a human body such as a blood vessel, a ureter, a bile duct, and a trachea, and that facilitates various operations such as pushing and pulling and rotation of the guide wire. The present invention relates to a wire holder.

  Conventionally, for inspection and treatment of human tubular organs such as blood vessels, ureters, bile ducts, trachea, etc., a tube-like catheter is inserted and a drug such as a contrast agent or an anticancer agent is administered, or tissue is formed by forceps through the catheter. Some of them have been collected. When inserting the catheter, a relatively thin and flexible guide wire is inserted into the tubular organ, and the distal end of the guide wire reaches the target location, and then the catheter is inserted along the outer periphery of the guide wire. .

  The guide wire is operated by gripping a predetermined portion of the guide wire. However, since the guide wire is thin, it is difficult to operate. Therefore, a holder having a larger outer diameter than that of the guide wire is attached to a predetermined portion of the guide wire, and the guide wire is operated by holding the holder.

  In addition, when using the catheter, liquids such as heparinized physiological saline and physiological saline are used to discharge air accumulated in the lumen and prevent opening obstruction due to blood backflow from the tip opening. It is common to perform the operation of injecting the gas into the catheter lumen. Similarly, with respect to the guide wire inserted into the catheter, the liquid as described above may be applied to the outer periphery in order to wet and improve slippage or to suppress blood adhesion. Such an operation is referred to as “flush”, but it is complicated and problematic to perform for each of the catheter and the guide wire.

  In order to solve the above problem, Patent Document 1 listed below discloses a catheter body, a first connector fixed to a proximal end portion thereof, a guide wire inserted into the catheter body, and a base of the guide wire. A catheter assembly comprising: a second connector fixed to an end and connectable to the first connector; and a fixture connected to the first connector and fixing a longitudinal position of the guide wire with respect to the catheter body. Have been described. The fixture has a slit that extends in the axial direction in the form of a rod, and further, a chuck portion including a clamping piece that is divided into three via a plurality of slits is provided at the tip.

  When the catheter assembly is used, the second connector is connected to the proximal end portion of the first connector of the catheter body base portion with the fixture removed from the guide wire, and the proximal end portion of the second connector. A syringe is connected to and physiological saline is injected from the syringe. Thereby, the physiological saline flows into the catheter lumen through the second connector and the first connector and is flushed, and the guide wire inserted into the catheter is flushed.

  Then, after removing the second connector from the first connector, pulling the second connector to the proximal side, pulling out the guide wire from the catheter body, the guide wire is inserted into the slit of the fixture, and the chuck portion at the tip of the fixture Is inserted into the proximal end portion of the first connector so that the guide wire is clamped by the chuck portion, the guide wire is fixed to the catheter body via the fixture, and the protruding length of the guide wire from the distal end of the catheter body Is appropriately set.

JP 2001-137351 A

  However, in the catheter assembly described in Patent Document 1, since the guide wire is fixed to the catheter body via the fixture, the guide wire and the catheter body cannot be moved relative to each other. In addition, since the fixing tool is not fixed to the guide wire in a state where it is removed from the first connector, the fixing tool must always be gripped when trying to hold the guide wire at an arbitrary position via the fixing tool. Inconvenient.

  Further, since the guide wire is fixed to the second connector, it can be operated via the second connector. However, the position of the second connector with respect to the guide wire cannot be adjusted, and the grip position of the guide wire cannot be adjusted according to the treatment site or the treatment purpose in the tubular organ.

  Accordingly, it is an object of the present invention to provide a guide wire holder that can flush the catheter and the guide wire at the same time and can appropriately adjust the fixing position with respect to the guide wire.

  In order to achieve the above object, the guide wire holder of the present invention has a tubular shape as a whole, an insertion path for the guide wire is formed inside, and a syringe connecting portion that can be connected to the syringe is provided at the proximal end portion. The main body and the guide wire are inserted, and a catheter connecting portion that can be connected to the catheter is provided at the distal end portion, and a screwed portion that is inserted and screwed into the inner periphery of the distal end portion of the main body is provided on the base side. The cap is provided separately or integrally on the base side from the screwed portion of the cap, the guide wire is inserted inside, and the cap is tightened when the cap is screwed to the distal end side of the main body, A chuck for holding the guide wire, and provided between the main body and the cap. When the cap is screwed onto the main body and the chuck is tightened, the main body and the cap are clamped. Characterized in that it comprises a sealing means for sealing the clearance between the flop.

  In the guide wire holder of the present invention, the sealing means includes a support portion formed on the outer periphery of the distal end of the screwed portion of the cap, and a seal member supported by the support portion. It is preferable that the seal member is sandwiched between the support portion and the front end portion of the main body to be sealed when tightened.

  In the guide wire holder according to the present invention, the chuck has a tip portion divided into a plurality of holding pieces by a plurality of slits formed in the circumferential direction at predetermined intervals and along the axial direction, When clamped, the sandwiching piece is pressed against the inner peripheral surface of the main body to sandwich the guide wire inserted inside, and the notch portion that widens the gap is formed on the sandwiching piece. It is preferable to be provided.

  According to the present invention, the guide wire is inserted into the main body, the chuck and the cap in the state where the screwed portion of the cap is inserted into the inner periphery of the front end portion of the main body and the cap is loosely screwed to the front end side of the main body. After the main body is arranged at an appropriate position where the guide wire is to be held, the cap is tightened more tightly, whereby the chuck is tightened so that the guide wire is clamped and the holder can be fixed to the guide wire. Therefore, it is possible to perform operations such as pushing and pulling and rotating the guide wire by holding the holder.

  In addition, at the beginning of the use of the guide wire and the catheter, the proximal end portion of the guide wire is tightened with a chuck and held by a holder, the catheter connecting portion of the cap is connected to the proximal end portion of the catheter, and the syringe connecting portion of the main body is connected. By connecting the tip of the syringe, a liquid such as heparinized physiological saline or physiological saline can be injected from the syringe to flush the guide wire outer periphery and the catheter inner periphery.

1 shows an embodiment of a guide wire holder of the present invention, and is a perspective view of the guide wire holder and a catheter applied thereto. It is a disassembled perspective view of the guide wire holder. It is sectional drawing of the guide wire holder. The usage method of the guide wire holder is shown, (a) is explanatory drawing which shows the 1st process, (b) is explanatory drawing which shows a 2nd process. It is explanatory drawing which shows the usage method of the guide wire holder, and shows the 3rd process. It is explanatory drawing which shows the basic usage method of the guide wire holder. It is the modification of the chuck | zipper which comprises the guide wire holder, Comprising: (a) is explanatory drawing which shows a 1st modification, (b) is explanatory drawing which shows a 2nd modification. FIG. 10 is an explanatory view showing a modified example in which a cap and a chuck are integrally formed in the guide wire holder. The other embodiment of the guide wire holder of this invention is shown, and it is the principal part expanded sectional view. The other embodiment of the guide wire holder of this invention is shown, and it is the principal part expanded sectional view.

  Hereinafter, an embodiment of a guide wire holder of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the guide wire holder 10 (hereinafter referred to as “holder 10”) in this embodiment includes a main body 20 having a tubular shape as a whole and a screw on the distal end side of the main body 20. A cap 40 to be worn; a chuck 60 disposed on the base side of the cap 40 and fastened by the cap 40; and a seal member 70 sandwiched between the main body 20 and the cap 40. Yes.

  Referring also to FIG. 3, the main body 20 has a cylindrical diameter-reduced portion 21, and a diameter-expanded portion 23 into which the base side of the cap 40 is inserted is provided at the distal end portion thereof. The enlarged diameter portion 23 has a cylindrical shape whose diameter is larger than that of the reduced diameter portion 21, and is connected to the distal end side of the reduced diameter portion 21. An insertion passage 25 for inserting the guide wire 1 is formed inside the reduced diameter portion 21 and the enlarged diameter portion 23. The diameter-reduced portion 21 and the diameter-expanded portion 23 are portions that are gripped by an operator when the holder 10 is operated, and the outer peripheral surface thereof may be knurled to prevent slipping.

  A female screw portion 27 is formed on the inner circumference of the enlarged diameter portion 23 with a predetermined length from the tip opening side. An annular protrusion 29 is provided on the inner periphery of the enlarged diameter part 23 at a depth behind the female screw part 27. Further, the inner peripheral surface 31 at a position adjacent to the reduced diameter portion 21 on the inner periphery of the enlarged diameter portion 23 is deeper than the protruding portion 29 and is gradually reduced in diameter toward the proximal end side of the main body 20. Tapered.

  A syringe connection portion 33 that can be connected to the syringe 7 (see FIG. 5) is provided at the proximal end portion of the main body 20 so as to communicate with the insertion passage 25. The inner periphery of the syringe connection portion 33 has a tapered shape that is gradually reduced in diameter toward the distal end side of the main body 20, and the innermost portion is the outer diameter of the distal end of the nozzle 7 a (see FIG. 5) of the syringe 7. Is formed with a small inner diameter, and the nozzle 7a of the syringe 7 is press-fitted and connected. In addition, this syringe connection part is not limited to a taper hole shape, What is necessary is just a structure connectable with the syringe 7. FIG.

  The cap 40 to be screwed to the distal end side of the main body 20 is provided with a cylindrical screw portion 41 on the base side, and the screw portion 41 is inserted into the diameter-expanded portion 23 of the main body 20. It is designed to be screwed. On the distal end side of the screwed portion 41, a lid portion 43 that is larger in diameter than the screwed portion 41 and covers the distal end opening of the enlarged diameter portion 23 of the main body 20 is continuously provided.

  Further, a catheter connecting portion 45 extending in a cylindrical shape having a diameter smaller than that of the lid portion 43 and having a tapered outer periphery on the distal end side of the lid portion 43 of the cap 40 is extended. The outer diameter on the proximal end side of the catheter connection portion 45 is formed to be slightly larger than the inner diameter of the proximal end opening 5a of the hub 5 (see FIG. 4B) attached to the proximal end portion of the catheter 3. The catheter connecting portion 45 is press-fitted into the proximal end opening 5 a of the hub 5 and connected to the catheter 3. The catheter connecting portion is not limited to a tapered tapered cylinder, and may be any structure that can be connected to the hub 5 of the catheter 3.

  An insertion passage 46 for inserting the guide wire 1 is formed in the screwing portion 41, the lid portion 43, and the catheter connection portion 45 described above.

  Further, the outer peripheral portion on the back surface side of the lid portion 43 and on the cap tip side of the screwing portion 41 forms a support portion 47 that supports the seal member 70. From the outer peripheral edge of the support portion 47, an annular wall portion 49 that covers the outer periphery of the seal member 70 is erected toward the cap base end side. As shown in FIG. 2, a plurality of gripping ribs 51 extending in the axial direction are provided on the outer periphery of the lid portion 43 at equal intervals in the circumferential direction, and when the cap 40 is screwed to the main body 20. In addition, operability when operating the holder 10 holding the guide wire 1 is enhanced.

  A male screw portion 53 is formed on the outer periphery of the screwing portion 41 and closer to the cap base end than the support portion 47, and the screwing portion 41 is inserted into the enlarged diameter portion 23 of the main body 20. The cap 40 is screwed onto the distal end side of the main body 20 by screwing the male screw portion 53 into the female screw portion 27 on the inner periphery.

  An annular flange 55 projects from the outer periphery of the proximal end of the screwed portion 41, and the tapered shape of the proximal end inner periphery of the screwed portion 41 gradually decreases toward the distal end of the cap. A chuck contact surface 57 is formed.

  As shown in FIGS. 2 and 3, the guide wire 1 is clamped by being tightened when the cap 40 is screwed to the distal end side of the main body 20 on the cap base side of the cap 40 from the screwing portion 41. A chuck 60 is provided. The chuck 60 of this embodiment includes a cylindrical tube portion 61 that is inserted into the screwed portion 41 of the cap 40 and a chuck portion 63 that is disposed on the outer periphery of the guide wire 1 and sandwiches the guide wire 1. Have.

  A plurality of slits 65 are formed in the chuck portion 63 at predetermined intervals in the circumferential direction and along the axial direction. The plurality of slits 65 can be bent through the slits 65 and sandwich the guide wire 1. The sandwiching piece 67 is divided and provided. In this embodiment, four slits 65 are formed, four chuck portions 63 are divided, and four clamping pieces 67 are provided. Note that the number of slits 65 may be two, three, or five or more, as long as a plurality of sandwiching pieces 67 can be formed in the chuck portion 63 so as to be deflectable.

  Further, a claw portion 69 that protrudes in the outer diameter direction and the inner diameter direction is provided at the tip of each clamping piece 67. A taper surface 69a and a taper surface 69b are provided at both ends in the axial direction of the portion of each claw portion 69 protruding in the outer diameter direction. The taper surface 69a forms a taper surface whose height gradually decreases toward the tube portion 61 side, and is a portion that contacts the chuck contact surface 57 of the screwed portion 41 of the cap 40 (see FIG. 3). . On the other hand, the taper surface 69b forms a taper surface whose height gradually decreases toward the chuck free end side, and when the cap 40 is screwed onto the tip end side of the main body 20, the tapered inner peripheral surface 31 of the main body 20 is formed. Is a portion that bends each clamping piece 67 (see FIG. 3). And as shown in FIG. 3, the guide wire 1 is clamped by the part which protruded in the internal diameter direction of each nail | claw part 69. As shown in FIG.

  In the above-described embodiment, the gap between the holding pieces 67 and 67 formed in the chuck portion 63 of the chuck 60 via the slit 65 has a constant width, and the liquid from the syringe 7 can flow through the gap. (See FIG. 5). In this case, you may provide the notch part which expands the clearance gap between each clamping piece 67,67. An example is shown in FIGS. 7A and 7B.

  In the chuck 60a shown in FIG. 7A, when the cross section of the chuck 60a is viewed from the axial direction, arc-shaped notches 67a and 67a are formed at substantially the center of the opposing surfaces of the holding pieces 67, respectively. Thus, the gap between the holding pieces 67 and 67 is widened. Further, in the chuck 60b shown in FIG. 7B, when the cross section of the chuck 60b is viewed from the axial direction, the notch portions 67b and 67b are formed on the opposing surfaces of the holding pieces 67, respectively. The gap between the pieces 67 and 67 is configured to gradually widen from the inside in the radial direction toward the outside.

  Further, in the present embodiment, the cap 40 and the chuck 60 are separated as shown in FIG. 2, but the cap 40 and the chuck 60c may be integrally formed as shown in FIG. That is, a plurality of slits 65 are formed on the cap base end side of the threaded portion 41 of the cap 40 with respect to the male screw portion 53, and a plurality of sandwiching pieces 67 are flexibly provided via the slits 65. The cap 40 and the chuck 60c are integrated.

  The holder 10 is provided between the main body 20 and the cap 40, and the screwed portion 41 of the cap 40 is inserted into the enlarged diameter portion 23 of the main body 20, and the cap 40 is screwed to the distal end side of the main body 20. When the chuck 60 is tightened, the sealing means for sealing the gap between the main body 20 and the cap 40 is provided.

  The sealing means in this embodiment is a back surface side of the lid portion 43 of the cap 40 and a support portion 47 provided on the outer periphery of the front end of the screwed portion 41, and an elastic material such as rubber supported by the support portion 47. It is comprised from the cyclic | annular sealing member 70 which consists of material. When the cap 40 is screwed onto the distal end side of the main body 20 and the chuck 60 is tightened, the seal member 70 is elastically deformed between the support portion 47 and the distal end surface of the enlarged diameter portion 23 of the main body 20. The gaps between the main body 20 and the cap 40 are sealed in close contact with each other (see FIG. 3).

  Next, an example of how to use the holder 10 having the above configuration will be described.

  As shown in FIG. 1, a hub 5 is attached to the proximal end portion of the catheter 3, and a guide wire 1 is inserted into the catheter 3. First, the proximal end portion of the guide wire 1 is connected to the hub. 5 is drawn out of the catheter 3 from the proximal end opening 5a (see FIG. 4B).

  When the holder 10 is used, the cylindrical portion 61 of the chuck 60 is inserted into the screwing portion 41 of the cap 40, and the claw portion of each clamping piece 67 is inserted into the chuck contact surface 57 of the screwing portion 41. The chuck 60 is disposed closer to the base side than the screwed portion 41 of the cap 40 with the taper surface 69a of 69 (see FIG. 3).

  Next, after the sealing member 70 is disposed on the support portion 47 of the cap 40 and held by the wall portion 49, the screwed portion 41 of the cap 40 is inserted into the enlarged diameter portion 23 of the main body 20. The male screw portion 53 on the outer periphery of the screwing portion 41 is screwed onto the peripheral female screw portion 27, and the cap 40 is loosely screwed onto the distal end side of the main body 20.

  In this state, the proximal end portion of the guide wire 1 is inserted into the catheter connecting portion 45 of the cap 40, and the inner periphery of each claw portion 69 of the plurality of clamping pieces 67 of the chuck 60 is passed through to In addition, the claw portions 69 of the plurality of sandwiching pieces 67 are respectively disposed, and the proximal end portion of the guide wire 1 is disposed in front of the syringe connecting portion 33 of the main body 20 (see FIG. 4A).

  In this state, the cap 40 is rotated so that the screwed portion 41 is strongly screwed to the enlarged diameter portion 23 of the main body 20. Then, the taper surface 69b on the free end side of the claw portion 69 is pressed against the inner peripheral surface 31 of the main body 20, and each clamping piece 67 is bent inward, so that the claw portion 69 is pressed against the outer periphery of the guide wire 1. The guide wire 1 is clamped by the plurality of clamping pieces 67, and the holder 10 can be fixed to the guide wire 1 (see FIGS. 3 and 4A). At the same time, the seal member 70 supported by the support portion 47 of the cap 40 is pressed against the distal end surface of the enlarged diameter portion 23 of the main body 20 to be elastically deformed, and is in close contact with the support portion 47 and the distal end surface of the enlarged diameter portion 23. And the clearance gap between the main body 20 and the cap 40 can be sealed (refer FIG. 3).

  In this state, the catheter connecting portion 45 of the holding tool 10 is press-fitted into the proximal end opening 5a of the hub 5, so that the holding tool is inserted into the proximal end portion of the catheter 3 via the hub 5 as shown in FIG. 10 can be connected.

  Then, by pressing the nozzle 7a of the syringe 7 filled with a liquid such as heparinized physiological saline or physiological saline into the syringe connecting portion 33 of the main body 20, as shown in FIG. Syringe 7 can be connected to 20 proximal ends.

  When liquid is injected from the nozzle 7a of the syringe 7 in this state, the liquid flowing into the insertion passage 25 in the holder 10 passes through the gaps between the holding pieces 67 and 67 of the chuck 60 as shown by arrows in FIG. After passing through the cylindrical portion 61, it flows into the insertion passage 46 of the cap 40, and further flows from the distal end opening of the catheter connecting portion 45 into the hub 5 through the proximal end opening 5a, 3 flows in.

  At this time, in the holder 10, the gap between the main body 20 and the cap 40 is supported by the support portion 47 of the cap 40 and the support portion 47 so as to be elastically formed on the distal end surface of the enlarged diameter portion 23 of the main body 20. Since the sealing member 70 is in contact with the sealing member 70, the liquid is prevented from leaking from the gap between the female screw part 27 of the main body 20 and the male screw part 53 of the cap 40, and the liquid injected from the syringe 7 is The cap 40, the chuck 60, and the main body 20 can smoothly flow into the catheter 3.

  Therefore, the outer periphery of the guide wire 1 held by the holder 10 can be wetted with the liquid, and the outer periphery of the remaining portion of the guide wire 1 inserted into the catheter 3 can be wetted with the liquid. Further, the air around the inner circumference of the catheter 3 can be replaced with a liquid, and the guide wire 1 and the catheter 3 can be flushed at the same time, so that the workability can be remarkably improved. Further, not only flushing but also administration of a contrast medium or the like can be performed from the syringe 7 through the holder 10 and further through the catheter 3.

  In this embodiment, the sealing means for sealing the gap between the main body 20 and the cap 40 includes the support portion 47 of the cap 40 and the seal member 70 supported by the support portion 47. 3 and 5, when the cap 40 is tightened, the seal member 70 is sandwiched between the support portion 47 and the distal end surface of the enlarged diameter portion 23 provided at the distal end portion of the main body 20. It comes to be worn. As a result, the seal member 70 can be effectively elastically deformed and brought into intimate contact with the support portion 47 and the distal end portion of the enlarged diameter portion 23, and the gap between the main body 20 and the cap 40 can be more reliably sealed. it can.

  Furthermore, in this embodiment, since the outer periphery of the elastically deformed seal member 70 abuts against the wall portion 49 provided upright from the periphery of the support portion 47 of the cap 40, the sealing performance between the main body 20 and the cap 40 is more effectively achieved. Can be increased (see FIG. 3).

  As shown in FIGS. 3 and 5, an annular flange 55 projecting from the outer periphery of the proximal end of the screwed portion 41 in a state where the cap 40 is fastened to the distal end side of the main body 20 is provided with the enlarged diameter portion 23. In addition, the annular protrusion 29 protruding from the inner periphery of the enlarged diameter portion 23 is disposed closer to the cap proximal end than the male threaded portion 53 of the screwed portion 41. Therefore, the liquid flowing through the gaps between the sandwiching pieces 67 and 67 of the chuck 60 does not easily flow to the screwed portions of the female screw portion 27 and the male screw portion 53, and the liquid can hardly leak from the screwed portions. .

  After flushing the guide wire 1 and the catheter 3 as described above, the nozzle 7a of the syringe 7 is removed from the syringe connecting portion 33 of the main body 20, and the catheter connecting portion 45 of the cap 40 is connected to the proximal end opening 5a of the hub 5. If necessary, loosen the cap 40 with respect to the main body 20, correct the position of the holder 10 with respect to the guide wire 1, tighten the cap 40 again, and in this state, as shown in FIG. The guide wire 1 is moved in the tubular organ V by grasping the reduced diameter portion 21 and the expanded diameter portion 10 and pushing and pulling or rotating the guide wire 1 with respect to the catheter 3. Various operations such as selecting a desired branch pipe in the branch section can be freely performed. Thus, by removing the catheter connecting portion 45 of the cap 40 from the hub 5 of the catheter 3, the holder 10 can be grasped and the guide wire 1 can be operated independently of the catheter 3. In addition, the catheter 3 and the guide wire 1 can be integrally operated with the holder 10 connected to the hub 5 without removing the holder 10 from the hub 5 of the catheter 3.

  At this time, in the holder 10, since the chuck 60 is provided on the base side from the screwed portion 41 of the cap 40, the axial direction of the main body 20 when the cap 40 is screwed to the distal end side of the main body 20. The chuck portion 63 of the chuck 60 is disposed in the intermediate portion. Therefore, when the gripping position of the guide wire 1 by the claw portions 69 of the chuck portion 63 of the chuck 60 is determined by the finger of the user who grips the holding tool 10 (for example, when holding the holding tool 10, for example, thumb or index finger) , Middle finger, etc.). As a result, a delicate operation feeling such as a torque feeling transmitted through the guide wire 1 is easily transmitted to the finger, and an operation performed by grasping the holding tool 10 is also easily transmitted to the guide wire 1 and a slight operation deviation. It is possible to improve the operability.

  When it is desired to adjust the fixing position of the holder 10 with respect to the guide wire 1, the screwed portion 41 of the cap 40 is loosened with respect to the enlarged diameter portion 23 of the main body 20, and the chuck 20 is By separating the taper surface 69b of each claw portion 69 of 60, each clamping piece 67 of the chuck 60 is elastically restored, and the claw portion 69 is separated from the guide wire 1 so that the chuck 60 is clamped with respect to the guide wire 1. Canceled.

  In this state, the guide wire 1 and the holder 10 are relatively slid to move the holder 10 to an appropriate position of the guide wire 1, and then the screwed portion 41 of the cap 40 is expanded in diameter of the main body 20. By strongly screwing the portion 23 again, the guide wire 1 is clamped and held by the chuck 60 as described above, and the fixing position of the holder 10 relative to the guide wire 1 can be adjusted.

  Further, by pressing the catheter connecting portion 45 of the holding tool 10 into the proximal end opening 5 a of the hub 5 of the catheter 3, the holding tool 10 can be held in a state of being connected to the hub 5. Since the guide wire 1 can be maintained in the state inserted into the catheter 3, the packaging of the product composed of the catheter 3 and the guide wire 1 can be made easy and compact. The syringe 7 can be immediately connected to the syringe connecting portion 33 of the holder 10 so that the flush operation between the guide wire 1 and the catheter 3 can be performed smoothly.

  Further, as shown in FIGS. 7A and 7B, the gap between the holding pieces 67 and 67 of the chucks 60a and 60b is widened by the notch 67a and the notch 67b. In this case, with the guide wire 1 held between the chuck 60a and the chuck 60b, the nozzle 7a of the syringe 7 is connected to the syringe connecting portion 33 of the main body 20, and the catheter connecting portion 45 of the cap 40 is connected to the hub 5 of the catheter 3. When flushing is performed by connecting to the proximal end opening 5a, the liquid injected from the syringe 7 can easily flow to the catheter side through the gap between the sandwiching pieces 67, 67. Therefore, the guide wire 1 and the catheter 3 Can be easily and reliably performed.

  In addition, as shown in FIG. 8, when the main body 20 and the chuck 60a are integrally formed, the number of parts can be reduced and the manufacturing cost can be reduced.

  FIG. 9 shows another embodiment of the guide wire holder of the present invention. Portions that are substantially the same as those of the above embodiment are given the same reference numerals, and descriptions thereof are omitted.

  The guide wire holder 10a of this embodiment (hereinafter referred to as “holder 10a”) differs from the above embodiment in the shape of the sealing member of the sealing means for sealing the gap between the main body 20 and the cap 40. Yes.

  That is, an annular thin seal member 70a protrudes from the distal end surface of the enlarged diameter portion 23 of the main body 20 constituting the holder 10a. When the screwed portion 41 of the cap 40 is screwed to the enlarged diameter portion 23 of the main body 20 and the chuck 60 is tightened, the thin annular seal member 70a is pressed by the support portion 47 of the cap 40 and deformed. The tip of the seal member 70a is in close contact with the support 47 of the cap 40 so that the gap between the main body 20 and the cap 40 is sealed. The sealing member 70a and the support portion 47 serve as sealing means in this embodiment.

  FIG. 10 shows still another embodiment of the guide wire holder of the present invention. Portions that are substantially the same as those of the above embodiment are given the same reference numerals, and descriptions thereof are omitted.

  The guide wire holder 10b (hereinafter referred to as “holder 10b”) of this embodiment differs from the above embodiment in the arrangement position of the sealing means for sealing the gap between the main body 20 and the cap 40.

  That is, an annular support portion 47a protrudes from the outer periphery of the screw portion 41 of the cap 40 constituting the holder 10b on the cap base end side with respect to the male screw portion 53, and the support portion 47a An annular seal member 70 made of an O-ring or the like is supported. Then, when the screwed portion 41 of the cap 40 is screwed to the enlarged diameter portion 23 of the main body 20 and the chuck 60 is tightened, the seal member 70 is pressed against the inner periphery of the enlarged diameter portion 23 to be elastically deformed and expanded. The gap between the main body 20 and the cap 40 is sealed in close contact with the inner periphery of the diameter portion 23 and the proximal end outer periphery of the screwed portion 41. That is, the seal member 70 and the support portion 47a form a sealing means in this embodiment.

10, 10a, 10b Guide wire holder (holder)
20 Main body 25 Insertion passage 27 Female thread part 31 Inner peripheral surface 33 Syringe connection part 40 Cap 41 Screwing part 45 Catheter connection part 47, 47a Support part 60, 60a, 60b, 60c Chuck 63 Chuck part 65 Slit 67 Holding piece 67a, 67b Notch

Claims (3)

A main body having a cylindrical shape as a whole, an insertion path for a guide wire formed therein, a syringe connecting portion connectable to a syringe at the base end portion, and a female screw portion formed at the inner periphery of the distal end portion;
The guide wire is inserted, and a catheter connecting portion that can be connected to a catheter is provided at the distal end portion. The male connection portion is inserted into the inner periphery of the distal end portion of the main body on the outer periphery of the base portion and screwed into the female screw portion. A cap provided with a threaded portion having a threaded portion;
The guide wire is provided separately or integrally on the base side from the screwed portion of the cap, and is tightened when the guide wire is inserted into the cap and the cap is screwed to the distal end side of the main body. A chuck for sandwiching
A sealing means provided between the main body and the cap, and sealing the gap between the main body and the cap when the chuck is tightened by screwing the cap onto the main body;
The chuck is divided into a plurality of clamping pieces by a plurality of slits formed at predetermined intervals in the circumferential direction and along the axial direction, and the clamping pieces protrude in the inner diameter direction on the free end side thereof. The claw portion is provided on the base side of the cap with respect to the screw portion of the cap, and the cap is screwed onto the main body to screw the chuck. The guide wire holding device, wherein when clamped, the free end side of the clamping piece is pressed against the inner peripheral surface of the main body and is bent inward so that the claw portion clamps the guide wire. Ingredients.   The sealing means includes a support portion formed on the outer periphery of the tip of the screwed portion of the cap, and a seal member supported by the support portion. When the cap is tightened, the support portion and the body The guide wire holder according to claim 1, wherein the seal member is sandwiched between the distal end portion of the guide wire and sealed.   The guide wire holder according to claim 1 or 2, wherein the clamping piece of the chuck is provided with a notch for widening the gap of the slit.