JP6043059B2 - 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. Moreover, since the said fixing tool is not being fixed to the guide wire in the state removed from the 1st connector, it cannot hold | grip this fixing tool and can operate a guide wire.

  Further, since the guide wire is fixed to the second connector, it can be operated via the second connector. However, since the second connector is fixed to the guide wire, the position of the second connector with respect to the guide wire cannot be adjusted, and the guide wire and the gripping portion are determined depending on the treatment site or treatment purpose in the tubular organ. And the length cannot be adjusted.

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, a guide wire insertion passage is formed therein, a base portion forms a grip portion, and a separate or integral chuck on the distal end side. A main body provided with a cap, screwed onto the distal end side of the main body to allow the guide wire to pass therethrough, and to tighten the chuck to clamp the guide wire passed through the chuck, the main body and the A sealing means provided on a base side of the chuck between the cap and the sealing means for sealing a gap between the main body and the cap when the chuck is tightened by screwing the cap onto the main body; A first connection portion connectable to a catheter is provided at a distal end portion of the cap, and a second connection portion connectable to a syringe is provided at a proximal end portion of the main body. The chuck has a cylindrical shape on the base side, and a plurality of clamping pieces are formed on the tip side so as to be able to bend through slits. A claw portion for holding the guide wire, the base side inner periphery of the chuck in a state where the chuck is clamped by the cap and the guide wire is held by the claw portion, and the guide An air gap is provided between the outer periphery of the wire, and the air gap is configured to communicate with the first connection portion of the cap via the slit.
In the guide wire holding fixture of the present invention, the outer periphery of the front Stories body, the cap screwing part a male threaded portion is formed is provided, on the inner periphery of said cap, threaded on the male screw portion of the main body A female screw portion to be attached is formed, and a flange projecting from the outer periphery on the front end side from the cap screwing portion of the main body and / or a rear portion of the female screw portion of the cap. It is preferable to have a protrusion protruding from the inner periphery .

  In the guide wire holder of the present invention, the sealing means is provided on the distal end side of the main body adjacent to the flange formed on the base end outer periphery of the portion of the main body to which the cap is screwed. And when the cap is tightened, the seal member is sandwiched between the flange and the base end surface of the cap and sealed. Is preferred.

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 clamping piece is pressed against the inner surface of the cap to clamp the guide wire inserted inside, and the clamping piece is provided with a notch that widens the gap of the slit. It is preferable.

  According to the present invention, with the cap loosely screwed to the front end side of the main body, the guide wire is inserted into the main body, the chuck and the cap, and the main body is arranged at an appropriate position where the guide wire should be held, and then the cap By further tightening the screw, the chuck can be tightened, the guide wire can be 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 use of the guide wire and the catheter, the proximal end portion of the catheter is connected to the first connection portion of the distal end portion of the cap, and the distal end portion of the syringe is connected to the second connection portion of the proximal end portion of the main body. By injecting liquids such as heparinized physiological saline and physiological saline from the syringe, the outer circumference of the guide wire and the inner circumference of the catheter can be flushed. At this time, since the gap between the main body and the cap is sealed by the sealing means, the liquid smoothly flows into the catheter from the tip of the cap through the chuck without leaking from the screwed portion of the both. Thus, the guide wire and the catheter can be flushed at the same time, so that workability can be remarkably improved. In addition to flushing, administration of a contrast medium and the like can be performed from a syringe through a holder and further through a catheter.

  In addition, in a state where the holder is connected to the proximal end portion of the catheter via the first connection portion, the catheter and the guide wire can be moved together, and the first connection portion is separated from the proximal end portion of the catheter, It is also possible to move the guide wire independently of the catheter with the holding tool. Furthermore, to adjust the position of the holder relative to the guide wire, loosen the cap to release the chuck, slide the holder relative to the guide wire and move it to an appropriate position, and then tighten the cap again and hold it with the chuck. Can be adjusted.

  Furthermore, since the guide wire is inserted into the catheter, the proximal end portion of the guide wire is inserted from the catheter, and the product can be accommodated in a state where the holding tool is attached to the proximal end portion of the guide wire, The packaging can be made easy and compact, and the user can obtain an advantage that the syringe can be immediately connected and flushed with heparinized physiological saline or the like in that state.

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 modification in which a main body 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 is disposed on the main body 20 having a tubular shape as a whole and on the distal end side of the main body 20. A chuck 40, a cap 60 that is screwed to the outer periphery of the front end of the main body 20 to tighten the chuck 40, and a seal that is tightly attached between the front end portion of the main body 20 and the base end portion of the cap. It is comprised from the member 70. FIG.

  Referring also to FIG. 3, the main body 20 includes a cylindrical gripping portion 21 and a cap screwing portion 23 that extends from the tip of the gripping portion 21 and to which the cap 60 is screwed. ing. An insertion passage 25 for inserting the guide wire 1 is formed inside the grip portion 21 and the cap screw portion 23.

  An annular flange 27 for projecting from the outer periphery of the grip portion 21 to support the seal member 70 is provided. Note that the outer peripheral surface of the grip portion 21 may be knurled to form a slip stopper.

  On the outer periphery of the cap screw portion 23 on the base side, a male thread portion 29 is formed with a predetermined length along the axial direction. As shown in FIG. 3, an annular protrusion 31 protrudes from the outer periphery of the base portion of the male screw portion 29, and a cap screwing portion base between the protrusion 31 and the flange 27 is provided. The outer peripheral surface 33 at the end forms an annular groove having an arc cross section. Further, an annular flange 35 projects from the outer periphery of the front end of the cap screw portion 23, and the diameter of the cap screw portion 23 gradually decreases toward the grip portion 21 side at the inner periphery of the front end of the cap screw portion 23. A chuck contact surface 37 having a tapered shape is formed.

  Then, a second connection with a tapered hole in which a syringe 7 (see FIG. 5) filled with a liquid such as heparinized physiological saline or physiological saline can be connected to the proximal end portion of the grip portion 21. A portion 39 is provided in communication with the insertion passage 25. The inner periphery of the second connecting portion 39 has a tapered shape with a diameter gradually reduced toward the cap screwing portion 23, and the innermost portion is the outer diameter of the tip of the nozzle 7a of the syringe 7 (see FIG. 5). The nozzle 7a is press-fitted and the syringe 7 is connected to the main body 20. Note that the second connection portion is not limited to the tapered hole shape, and may be any structure that can be connected to the syringe 7.

  As shown in FIGS. 2 and 3, the chuck 40 disposed on the distal end side of the main body 20 has a cylindrical shape that is inserted into the cap screwing portion 23 of the main body 20 while the guide wire 1 is inserted therethrough. It has the base 41 and the front-end | tip part 43 which is arrange | positioned on the outer periphery of the guide wire 1 and clamps the guide wire 1. FIG. A plurality of slits 45 are formed in the distal end portion 43 at predetermined intervals in the circumferential direction and along the axial direction. The plurality of slits 45 can be bent through the slits 45 and sandwich the guide wire 1. Are provided in a divided manner.

  In this embodiment, four slits 45 are formed, whereby the tip end portion 43 of the chuck 40 is divided into four, and four clamping pieces 47 are provided. Further, the number of the slits 45 may be two, three, or five or more, and it is only necessary that the plurality of sandwiching pieces 47 can be bent at the distal end portion 41.

  As shown in FIG. 3, a claw portion 49 that protrudes in the outer diameter direction and the inner diameter direction is provided at the tip of each clamping piece 47. The outer base end face 49 a of each claw 49 forms a tapered surface whose height gradually decreases toward the chuck base end side, and is a part that comes into contact with the chuck contact surface 37 of the cap screw part 23. On the other hand, the outer front end surface 49b of the claw portion 49 forms a tapered surface whose height gradually decreases toward the chuck front end side, and when the cap 60 is screwed to the cap screw portion 23, the outer front end surface 49b is formed on the inner surface of the cap 60. It is a part which is pressed and bends each clamping piece 47. Further, the guide wire 1 is sandwiched by the portion of the claw portion 49 protruding in the inner diameter direction.

  In the above-described embodiment, the gap between the holding pieces 47 and 47 formed in the tip portion 43 of the chuck 40 via the slit 45 has a constant width, and the liquid from the syringe 7 can flow through the gap. (See FIG. 5). However, you may provide the notch part which expands the clearance gap between each clamping piece 47 and 47. FIG. An example is shown in FIGS. 7A and 7B.

  In the chuck 40a shown in FIG. 7 (a), when the chuck 40a is viewed from the axial direction, arc-shaped notches 47a and 47a are formed at substantially the center on both sides in the circumferential direction of each clamping piece 47, respectively. Thus, the gap between the sandwiching pieces 47 and 47 is widened. Further, in the chuck 40b shown in FIG. 7B, when the chuck 40b is viewed from the axial direction, notches 47b and 47b are formed on both sides in the circumferential direction of each clamping piece 47, respectively. The gaps 47 and 47 are configured to gradually widen from the inside in the radial direction toward the outside.

  Further, in the present embodiment, the main body 20 and the chuck 40 are separated as shown in FIG. 2, but the main body 20 and the chuck 40a may be integrally formed as shown in FIG. In this case, a plurality of slits 45 are formed in a portion of the cap screw portion 23 where the male screw portion 29 is not formed, and a plurality of clamping pieces 47 are provided via the slits 45 so as to be able to bend. The main body 20 and the chuck 40a are integrated.

  As shown in FIGS. 2 and 3, a cap 60 that is screwed into the cap screwing portion 23 of the main body 20 to tighten the chuck 40 and clamp the guide wire 1 to the chuck 40 is the case of this embodiment. The cover cylinder part 61 which is substantially cylindrical with one end opened and covers the cap screw part 23, and the cylindrical first connection part which is provided on the distal end side of the cover cylinder part 61 and can be connected to the catheter 3 65.

  Further, the other end side of the cover tube portion 61 forms a reduced diameter portion 63 that gradually decreases in diameter toward the first connection portion 65, and the first connection portion 65 extends from the tip of the reduced diameter portion 63. It is installed. The first connecting portion 65 has a tapered shape, and the proximal end portion thereof is 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. It is formed with an outer diameter and is press-fitted into the proximal end opening 5a of the hub 5 so that the first connecting portion 65 is connected to the catheter 3 (see FIG. 5). In addition, as a 1st connection part, it is not limited to a taper-shaped cylindrical body, What is necessary is just a structure connectable with the syringe 7. FIG.

  In addition, the inner surface 63a of the reduced diameter portion 63 has a tapered shape that is gradually reduced in diameter toward the first connecting portion 65, and when the cap 60 is screwed to the cap screw portion 23, The outer tip end surface 49 b of the claw portion 49 is pressed to bend the clamping piece 47.

  Further, as shown in FIG. 3, a female screw portion 67 that is screwed to the male screw portion 29 of the cap screwing portion 23 of the main body 20 is formed on the inner periphery of the base side of the cover tube portion 61. . Further, an annular protrusion 69 protrudes from the inner periphery at the back of the cover tube portion 61 with respect to the female screw portion 67. Furthermore, a plurality of gripping protrusions 61a (see FIG. 2) extending in the axial direction are provided on the outer periphery of the cover cylinder part 61 at equal intervals in the circumferential direction, thereby improving the operability. .

  The retainer 10 is screwed between the main body 20 and the cap 60 and is screwed onto the cap screwing portion 23 at a base side of the claw portion 49 of the clamping piece 47 of the chuck 40. When the chuck 40 is tightened, the sealing means for sealing the gap between the main body 20 and the cap 60 is provided.

  In this embodiment, an annular flange 27 protruding from the outer periphery of the gripping portion 21 of the main body 20 and an outer periphery of the base end of the cap screwing portion 23 are supported by the flange 27 and elastic such as rubber. The sealing means is composed of a sealing member 70 made of an O-ring made of a material, and when the cap 60 is screwed onto the cap screwing portion 23 and the chuck 40 is tightened, the flange 27 and the cap The seal member 70 is elastically deformed between the base end surface 60 and the two in close contact with each other, and the gap between the main body 20 and the cap 60 is sealed.

  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 using the holder 10, as shown in FIG. 2, the base 41 of the chuck 40 is inserted into the cap screw 23 of the main body 20, and the chuck 40 is inserted into the chuck contact surface 37 of the main body 20. The chuck 40 is disposed on the distal end side of the main body 20 by bringing the outer base end face 49a of the claw portion 49 of each sandwiching piece 47 formed into contact with each other. In this state, the seal member 70 is disposed between the protrusion 31 of the cap screwing portion 23 and the flange 27, and the seal member 70 is supported by the flange 27. Then, the cover cylinder part 61 of the cap 60 is covered on the outer periphery of the cap screw part 23, and the male screw part 29 on the outer periphery of the cap screw part 23 and the female screw part 67 on the inner periphery of the cover cylinder part 61 are screwed. The cap 60 is loosely screwed to the front end side of the main body 20.

  In this state, the proximal end portion of the guide wire 1 is inserted into the first connection portion 65 of the cap 60, and is passed through the inner periphery of each claw portion 49 of the plurality of clamping pieces 47 of the chuck 40. The claw portions 49 of the plurality of sandwiching pieces 47 are disposed on the outer periphery, and the proximal end portion of the guide wire 1 is disposed in front of the second connection portion 39 of the main body 20.

  In the above state, the cover cylinder portion 61 of the chuck 40 is strongly screwed to the cap screw portion 23 of the main body 20. Then, the outer front end surface 49b of the claw portion 49 of each clamping piece 47 is pressed against the inner surface 63a of the reduced diameter portion 63 of the cover cylinder portion 61, and each clamping piece 47 is bent inward, so that the claw portion 49 becomes the guide wire 1. The guide wire 1 is clamped by the plurality of clamping pieces 47, 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 flange 27 of the main body 20 is pressed against the base end surface of the cover tube portion 61 and elastically deformed, and is in close contact with the flange 27 and the base end surface of the cover tube portion 61. And the cap 60 can be sealed (see FIGS. 3 and 4A).

  In this embodiment, since the outer peripheral surface 33 of the base end of the cap screw portion 23 of the main body 20 forms an annular groove having an arcuate cross section, the elastically deformed seal member 70 is easily brought into close contact with the main body 20. And the cap 60 can be further improved in sealing performance (see FIGS. 3 and 5). Further, since the annular protrusion 31 protruding from the outer periphery of the base portion of the male screw portion 29 of the main body 20 is engaged with the seal member 70, the seal member 70 can be firmly positioned and held so as not to be displaced ( 3 and 5).

  In the above state, the first connecting portion 65 of the holding tool 10 is press-fitted into the proximal end opening 5a of the hub 5, so that the proximal end portion of the catheter 3 is inserted into the proximal end portion of the catheter 3 via the hub 5 as shown in FIG. The holder 10 can be connected.

  And by press-fitting the nozzle 7a of the syringe 7 filled with a liquid such as heparinized physiological saline or physiological saline into the tapered hole-like second connection part 39 of the main body 20, as shown in FIG. The syringe 7 can be connected to the proximal end portion of the main body 20 of the holder 10.

  When liquid is injected from the nozzle 7a of the syringe 7 in this state, the liquid that has flowed into the insertion passage 25 in the holder 10 passes through the base 41 of the chuck 40 and passes through the gaps between the holding pieces 47 and 47. The cap 60 flows into the first connection portion 65 of the cap 60, and further flows into the hub 5 from the distal end opening of the first connection portion 65 through the proximal end opening 5 a of the hub 5 and into the catheter 3. (See arrow in FIG. 5).

  At this time, in the holder 10, the gap between the main body 20 and the cap 60 is sealed by the flange 27 of the main body 20 and the seal member 70 that is supported by the flange 27 and elastically contacts the base end surface of the cap 60. Therefore, the liquid is prevented from leaking from the gap between the male screw portion 29 of the main body 20 and the female screw portion 67 of the cap 60, and the liquid injected from the syringe 7 is allowed to flow into the main body 20, the chuck 40 and the cap 60. And 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.

  In this embodiment, the sealing means for sealing the gap between the main body 20 and the cap 60 includes a flange 27 on the outer periphery of the base end of the main body 20 and a seal member 70 supported by the flange 27. When the cap 60 is tightened with respect to the cap screw portion 23, the seal member 70 is sandwiched between the flange 27 and the base end surface of the cover tube portion 61 as shown in FIGS. Therefore, the seal member 70 can be elastically deformed to be brought into close contact with the flange 27 and the base end surface of the cover cylinder portion 61, and the gap between the main body 20 and the cap 60 can be more reliably sealed. .

  Further, as shown in FIGS. 3 and 5, in the state where the cap 60 is fastened to the cap screw portion 23, an annular flange portion 35 protruding from the outer periphery of the tip end of the cap screw portion 23 is provided on the cap 60. Since the annular protrusion 69 that is disposed on the inner peripheral tip side and protrudes from the inner periphery of the cap 60 is disposed on the distal end side relative to the male screw portion 29 of the cap screwing portion 23, each clamping The liquid flowing through the gap between the pieces 47 and 47 is less likely to flow to the screwed portions of the male screw portion 29 and the female screw portion 67, and the liquid can be prevented from leaking 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 second connecting portion 39 of the main body 20, and the first connecting portion 65 of the cap 60 is connected to the proximal end of the hub 5. In this state, the tubular organ is removed by grasping the grasping portion 21 of the holder 10 and pushing and pulling or rotating the guide wire 1 with respect to the catheter 3 as shown in FIG. Various operations such as moving the guide wire 1 in V and selecting a desired branch pipe in the branching section can be freely performed. In addition, the catheter 3 and the guide wire 1 can be integrally operated in a state where the holder 10 is connected to the hub 5 without removing the holder 10 from the hub 5 of the catheter 3.

  When it is desired to adjust the fixing position of the holder 10 with respect to the guide wire 1, the cap 60 is loosened from the cap screwed portion 23 of the main body 20, and the inner surface 63 a of the reduced diameter portion 63 of the cover tube portion 61 is attached to the chuck 40. By moving away from the outer end surface 49b of the claw portion 49 of the holding piece 47, the holding piece 47 is elastically restored, the claw portion 49 is separated from the guide wire 1, and the holding state of the chuck 40 with respect to the guide wire 1 is released. The In this state, the guide wire 1 and the holder 10 are slid relatively to move the holder 10 to an appropriate position of the guide wire 1, and then the cap 60 is again attached to the cap screw portion 23 of the main body 20. By tightly screwing, the guide wire 1 is clamped and held by the chuck 40 as described above, and the fixing position of the holder 10 relative to the guide wire 1 can be adjusted.

  Further, since the first connecting portion 65 of the holding tool 10 can be press-fitted 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. The guide wire 1 can be maintained in the state inserted therein, and the product of the catheter 3 and the guide wire 1 can be easily and compactly packed. The syringe 7 can be immediately connected to the connecting portion 39 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 clamping pieces 47 and 47 of the chucks 40a and 40b is widened by the notch 47a and the notch 47b. If the guide wire 1 is held between the chucks 40a and 40b, the nozzle 7a of the syringe 7 is connected to the connection hole 39a of the second connection portion 39 of the main body 20, and the first connection portion 65 of the cap 60 is connected. Is connected to the proximal end opening 5a of the hub 5 of the catheter 3, and when flushing is performed, the liquid injected from the syringe 7 easily flows to the catheter side through the gap between the sandwiching pieces 47 and 47, and the flushing is performed. Operation can be performed easily and reliably.

  As shown in FIG. 8, when the main body 20 and the chuck 40a 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 60. Yes.

  In other words, the flange 27 of the main body 20 constituting the holder 10 a is provided with a thin seal member 70 a that protrudes in an annular shape from the surface on the cap 60 side and is integrally formed with the flange 27. When the cap 60 is screwed to the cap screwing portion 23 of the main body 20 and the chuck 40 is tightened, the thin annular seal member 70 a is pressed against the base end surface of the cover tube portion 61 of the cap 60. The distal end portion of the seal member 70a is brought into close contact with the proximal end surface of the cover tube portion 61 due to the bending deformation, and the gap between the main body 20 and the cap 60 is sealed. The sealing member 70a and the flange 27 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 is different in the position of the flange of the sealing means for sealing the gap between the main body 20 and the cap 60 as compared to the above embodiment. .

  That is, an annular flange 27a protrudes from the outer periphery of the cap screw portion 23 of the main body 20 constituting the holder 10b on the tip side of the male screw portion 29, and an O-ring or the like is provided on the flange 27a. An annular seal member 70 is supported. In addition, the outer diameter of the flange 27 a is a dimension that matches the inner diameter of the cap 60. When the cap 60 is screwed to the cap screwing portion 23 of the main body 20 and the chuck 40 is tightened, the seal member 70 is pressed against the inner periphery of the cap 60 to be elastically deformed. The gap between the main body 20 and the cap 60 is sealed in close contact with the outer periphery of the 20 cap screwing portion 23. That is, the seal member 70 and the flange 27a form a sealing means in this embodiment.

DESCRIPTION OF SYMBOLS 1 Guide wire 3 Catheter 7 Syringe 10, 10a, 10b Guide wire holder (holder)
20 Main body 25 Insertion passage 27, 27a Flange 30 Main body 39 Second connection part 45 Slit 47 Clamping piece 60 Cap 65 First connection part 70, 70a Seal member

Claims (4)

A main body having a cylindrical shape as a whole, an insertion passage for a guide wire formed therein, a base side forming a gripping portion, and a separate or integral chuck provided on the distal end side;
A cap that is screwed to the distal end side of the main body to allow the guide wire to pass therethrough, and to clamp the chuck and clamp the guide wire passed through the chuck;
Provided closer to the base than the chucking portion of the chuck between the main body and the cap, and seals the gap between the main body and the cap when the cap is screwed onto the main body and the chuck is tightened. Sealing means,
The tip of the cap is provided with a first connection that can be connected to the catheter,
The base end portion of the main body is provided with a second connection portion connectable to a syringe,
The chuck has a cylindrical shape on the base side, and a plurality of holding pieces are formed on the tip side so as to be able to bend through slits, and protrudes in the inner diameter direction at the tip part of each holding piece, A claw part is provided for holding the guide wire,
In a state where the chuck is tightened with the cap and the guide wire is sandwiched between the claw portions, a gap is provided between the base side inner circumference of the chuck and the outer circumference of the guide wire. A guide wire holder configured to communicate with the first connection portion of the cap through a slit. The outer periphery of the front Stories body, the cap screwing part a male threaded portion is formed is provided, on the inner periphery of the cap is screwed on the male screw portion of the body, the female screw portion is formed And
Furthermore, it has a flange projecting from the outer periphery on the front end side than the cap screwing portion of the main body, and / or a projecting portion projecting from the inner periphery deeper than the female screw portion of the cap. The guide wire holder according to claim 1 .   The sealing means includes a flange formed on a base end outer periphery of a portion to which the cap of the main body is screwed, and an annular seal member provided on the front end side of the main body adjacent to the flange, The guide wire holder according to claim 1 or 2, wherein when the cap is tightened, the seal member is sandwiched and sealed between the flange and a base end surface of the cap. . The chuck has a tip portion 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 when the cap is tightened, the clamping pieces become the caps. 4. The structure according to claim 1, wherein the guide wire is pressed by an inner surface and sandwiched inside the guide wire, and a notch portion is provided in the sandwiching piece to widen the gap between the slits . The guide wire holder according to one.