JP2021090629A - Y-shaped connector - Google Patents

Abstract

To provide a Y-shaped connector comprising a main tube part and a side tube part extending in a lateral direction from the main tube part, capable of achieving small resistance even when a catheter or a guide wire is inserted from the side tube part, and achieving smooth withdrawal.SOLUTION: A Y-shaped connector 100 of the invention is configured so that, a slide member 20 which is formed of a material having slide ability higher than that of a material of a Y-shaped connector main body part 10 is inserted so as to be exposed to an inner surface of a joined part of at least a main tube part 10 and a side tube part 12.SELECTED DRAWING: Figure 3

Description

The present invention relates to a Y-type connector.

Conventionally, a Y-type connector has been used to facilitate the operation of inserting or pulling a guide wire or catheter. The Y-shaped connector is a Y-connector in which a tubular main branch through which a catheter is passed is branched into a tubular sub-branch for injecting a liquid agent. A fixed valve for fixing the catheter passed through the hole is provided, and a first hemostatic valve and a second hemostatic valve capable of allowing the passage of the catheter in a wrapped state and preventing the outflow of blood are provided. , A tubular opener that can be moved in the longitudinal direction is provided on the base end side of the main branch, and only the first hemostatic valve is arranged within the moving range of the opener (Patent Document 1).

However, when the guide wire or catheter is inserted from the sub-branch side, the Y-shaped connector sharply bends at the site where the guide wire or catheter joins the main branch, so that it is large when inserting or removing the guide wire or catheter. There was a problem that it became a resistance and it became difficult to insert and remove it.

Japanese Unexamined Patent Publication No. 2005-261759

Therefore, the present invention has been made to solve the above-mentioned problems, and is a main pipe portion having a main pipe passage portion in the longitudinal direction into which a linearly formed introduction member such as a guide wire or a catheter is inserted. In a Y-type connector that has a side tube that extends laterally from the main tube, even when a catheter or guide wire is inserted from the side tube, the resistance is small and the Y-type connector can be smoothly inserted and removed. The purpose is to provide a connector.

The present invention has taken the following measures to achieve the above object.

The Y-type connector according to the present invention is
A main pipe portion having a main pipe passage portion through which a linearly formed introduction member such as a guide wire or a catheter is inserted in the longitudinal direction and a side pipe portion having a side pipe passage portion extending laterally from the main pipe portion are provided. In the Y-type connector
A sliding member made of a material having a higher slidability than the material of the Y-shaped connector main body is inserted so as to be exposed at least on the inner surface of the side pipe passage portion.

In a Y-shaped connector having a main tube portion and a side tube portion, the introduction member is most likely to come into contact when a long introduction member such as a surgical guide wire or a catheter is inserted from the side tube portion and then pulled out. When the introduction member comes into contact by inserting a sliding member made of a material that is more slidable than the Y-type connector main body so that it is exposed on the inner surface of the side pipe passage, which is a part that tends to become resistance. The sliding resistance is reduced so that it can be pulled out smoothly.

Further, in the Y-shaped connector according to the present invention, the sliding member is a side pipe passage forming portion arranged on the inner surface of the base end side of the side pipe passage portion and the side of the side pipe portion of the main pipe passage portion. The main pipe passage forming portion is provided in the above, and the boundary between the side pipe passage forming portion and the main pipe passage forming portion may be formed by a curved surface.

Introduced by providing a side pipe passage forming portion and a main pipe passage forming portion in the sliding member so that the sliding member is also provided at the confluence of the main pipe and the side pipe and forming the boundary with an acute angle. It is possible to prevent the acute-angled portion of the sliding member from coming into contact with the member, reduce the sliding resistance between the introduction member and the sliding member, and allow the introduction member to be pulled out more smoothly.

Further, in the Y-shaped connector according to the present invention, the sliding member has a cross-sectional arc shape in which the side pipe passage forming portion and the main pipe passage forming portion have the same curvatures as the side pipe passage portion and the main pipe passage portion, respectively. It may be characterized by being formed.

By adopting such a configuration, it is possible to prevent a step from being generated between the sliding member and the Y-type connector main body in the side pipe passage portion and the main pipe passage portion, and resistance is generated when the introduction member is inserted and removed. It can be prevented from doing so.

Further, in the Y-shaped connector according to the present invention, the sliding member may be characterized by including a fixing ring portion fixed to the main pipe portion.

By providing such a ring portion, the sliding member is prevented from moving in the longitudinal direction and the radial direction to the outer periphery with respect to the main pipe. Therefore, even if the materials of the sliding member and the Y-shaped connector main body are not compatible with each other, the sliding member can be firmly fixed to the Y-shaped connector main body.

Further, in the Y-shaped connector according to the present invention, the sliding member is provided with an elastic material such as silicon rubber, urethane rubber, or fluororubber on a part or all of the back surface of the side pipe passage forming portion. It may be characterized by.

By providing an elastic material on the back surface of the side pipe passage forming portion of the sliding member, it is possible to absorb the pressing force applied to the sliding member from the introduction member when the introduction member inserted from the side pipe portion side is pulled out. .. Therefore, the introduction member can be pulled out more smoothly.

Further, in the Y-shaped connector according to the present invention, a part or all of the side tube portion may be characterized by having flexibility.

Due to the flexibility of the side pipe portion, when the introduction member inserted from the side pipe portion side is pulled out, the side pipe portion bends due to the pressing force applied to the sliding member from the introduction member, so that the side pipe portion slides from the introduction member. The pressing force applied to the member can be absorbed, and the introduction member can be pulled out more smoothly.

Further, in the Y-type connector according to the present invention,
A main pipe portion having a main pipe passage portion through which a linearly formed introduction member such as a guide wire or a catheter is inserted in the longitudinal direction and a side pipe portion having a side pipe passage portion extending laterally from the main pipe portion are provided. In the Y-type connector
At least the inner surface of the side pipe passage portion is coated with a coating having a higher slidability than the material of the Y-shaped connector main body portion.

In the present invention, instead of inserting the sliding member, the side pipe passage portion is coated with a coating agent having a higher slidability than the Y-type connector main body portion. By adopting such a configuration, the slidability of the side pipe passage portion can be improved, and the introduction member can be smoothly pulled out.

Further, the Y-type connector according to the present invention is further characterized in that the confluence of the main pipe passage portion and the side pipe passage portion is coated with a coating having higher slidability than the material of the Y-type connector main body portion. It may be.

By providing a sliding member not only at the side pipe passage portion but also at the confluence portion of the main pipe and the side pipe, it is possible to improve the slidability even when the introduction member abuts on the confluence portion, and it is smooth. It becomes possible to pull out the introduction member.

Further, the Y-shaped connector according to the present invention is characterized in that a part or all of the inner surface of the side tube portion is provided with an elastic material such as silicon rubber, urethane rubber, or fluororubber. May be good.

By providing an elastic material such as silicon rubber, urethane rubber, or fluororubber on a part or all of the inner surface of the side tube portion, a push applied from the introduction member when the introduction member inserted from the side tube portion side is pulled out. The pressure can be absorbed by the elastic material. Therefore, the introduction member can be pulled out more smoothly.

Further, in the Y-shaped connector according to the present invention, a part or all of the side tube portion may be characterized by having flexibility.

Since the side pipe portion has flexibility, when the introduction member inserted from the side pipe portion side is pulled out, the side pipe portion bends due to the pressing force applied to the sliding member from the introduction member and absorbs the bending pressing force. It becomes possible to pull out the introduction member more smoothly.

According to the Y-type connector according to the present invention, when an introduction member such as a guide wire or a catheter is inserted from the side tube portion side, the portion that comes into contact when the introduction member is pulled out has high slidability, so that resistance is increased. It is possible to pull out smoothly without any problems.

FIG. 1 is a perspective view of the Y-type connector 100 according to the first embodiment. FIG. 2 is a front view of the Y-type connector 100 according to the first embodiment. FIG. 3 is a cross-sectional view of the Y-type connector 100 according to the first embodiment. FIG. 4 is a perspective view of the sliding member 20 according to the first embodiment. FIG. 5 is a cross-sectional view of the Y-type connector 100 according to the second embodiment. FIG. 6 is a perspective view of the sliding member 20 according to the second embodiment. FIG. 7 is a cross-sectional view showing another embodiment of the Y-type connector 100 according to the first embodiment. FIG. 8 is a cross-sectional view showing still another embodiment of the Y-type connector 100 according to the first embodiment. FIG. 9 is a cross-sectional view showing still another embodiment of the Y-type connector 100 according to the first embodiment. 10A and 10B are perspective views showing a hemostatic valve 50 of the Y-type connector 100 according to the embodiment, and FIG. 10C is a cross-sectional view.

Next, an embodiment of the Y-type connector 100 according to the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, are not used for the purpose of limiting to these configurations, and do not deviate from the gist of the present invention. It can be changed as appropriate within the range. For convenience of explanation, in the claims and the specification, the "base end side" and the "tip end side" refer to the upper side (hand side) shown in FIG. 1 with respect to the Y-type connector 100. It is called the "base end side", and the lower side (distal end side) is called the "tip side".

(First Embodiment)
As shown in FIGS. 1 to 3, the Y-type connector 100 according to the first embodiment is a base of a Y-type connector main body portion 10 having a main pipe portion 11 and a side pipe portion 12 and a Y-type connector main body portion 10. It includes a fixing member 30, a pusher 40, and a screw cap 60 that are attached to the end side.

As shown in FIG. 1 or 3, the Y-type connector main body 10 includes a main pipe portion 11 extending in the longitudinal direction from the proximal end side to the distal end side and a side pipe extending laterally from the middle of the main pipe portion 11. It has a part 12. As shown in FIG. 3, the main pipe portion 11 has a main pipe passage portion 11a penetrating in the longitudinal direction through which an elongated linear introduction member 90 such as a guide wire or a catheter is inserted, and the proximal end side is fixed. The member 30 is housed. As shown in FIG. 3, the side pipe portion 12 is provided with a side pipe passage portion 12b communicating from the end portion of the side pipe portion 12 to the main pipe passage portion 11a, and is provided with a side pipe passage portion 12b for injecting a chemical solution, a contrast medium, or the like, or a main pipe. It is used when inserting an introduction member 90 such as a guide wire or a catheter separately from the passage portion 11a. As shown in FIG. 2, a screw groove 12a is provided at the end of the side tube portion 12 so that a mounting device such as a drug injector can be connected.

As shown in FIG. 3, the fixing member 30 is used to strongly fix the introduction member 90 for a relatively long time, and can be fixed by pressing the introduction member 90 from the surroundings. The fixing member 30 is made of elastomer, rubber, silicon, or the like, and is formed in a tubular shape having a through hole 31 through which the introduction member 90 is inserted from the base end side to the tip end side. The fixing member 30 is pressed from above by the pusher 40 described later, so that the through hole 31 is narrowed, and the introduction member 90 can be tightened and fixed.

The pusher 40 tightens the introduction member 90 via the fixing member 30 by pressing the fixing member 30 from above. The pusher 40 is fixed to the screw cap 60 by a screw, and moves up and down in the same manner as the screw cap 60 moves up and down with respect to the Y-type connector main body 10. As described above, by pushing down the pusher 40, the introduction member 90 can be fixed by pressing the fixing member 30 to narrow the through hole 31.

The screw cap 60 has a function as a lid member for accommodating the fixing member 30 and the pusher 40 in the Y-shaped connector main body 10, and adjusts the position of the pusher 40 with respect to the longitudinal direction (vertical direction) of the main body. Has a function. The screw cap 60 is a tubular member having a thread formed on the outer periphery of the base end side of the Y-shaped connector main body 10 and having a thread that can be engaged with the thread formed on the inner circumference thereof. 40 can be pushed down and up. By tightening the screw cap 60, the pusher 40 can be pushed down and the introduction member 90 can be tightened and fixed as described above. The screw cap 60 is provided with an introduction member hole 63 for inserting the introduction member 90.

Further, a rotator 95 may be optionally provided at the tip of the Y-type connector main body 10. As shown in FIG. 3, the rotator 95 has a through hole 95a through which the proximal end side and the distal end side through which the introduction member 90 is inserted, and a circular groove 95b formed around the through hole 95a. A guiding catheter or other catheter can be connected to the circular groove 95b.

In the present invention, as shown in FIG. 3, the sliding member 20 is inserted inside the side pipe passage portion 12b of the Y-shaped connector main body portion 10. As the sliding member 20, a material having a higher slidability than the material of the Y-shaped connector main body 10, that is, a resin material having a low friction coefficient is used. Examples of the material used include polyacetal, polyamide, polytetrafluoroethylene and the like. The sliding member 20 is a portion that is particularly likely to come into contact with the introduction member 90 such as a guide wire or a microcatheter inserted from the side pipe passage portion 12b, that is, at least the inner surface of the side pipe passage portion 12b. Of these, it is installed so as to be arranged on the surface on the tip side in particular. Preferably, as shown in FIG. 3 of the first embodiment, the introduction member 90 can be prevented from coming into contact with the merging portion α in the vicinity of the merging portion α between the main pipe passage portion 11a and the side pipe passage portion 12b. , It is preferable to provide the side pipe passage portion 12b so as to protrude from the inner surface. Further, it is preferable to provide the side pipe passage portion 12b on the bottom surface side on the tip end side so as to have a length of two-thirds or more of the length of the side pipe passage portion 12b. This is because when the introduction member 90 is pulled out, the contact portion β with the introduction member 90 is often formed even at a position within two-thirds of the length of the side pipe passage portion 12b. In the first embodiment, as shown in FIG. 4, the sliding member 20 is made of an elongated member having a substantially semicircular cross section.

The sliding member 20 thus produced is attached to the inside of the side pipe passage portion 12b of the Y-shaped connector 100 by inserting it from the end portion of the side pipe portion 12. The sliding member 20 may be integrally molded by insert molding.

The Y-type connector 100 produced in this way is pulled out while being in contact with the sliding member 20 when the introduction member 90 inserted from the side pipe portion side is pulled out. Therefore, when the introduction member 90 is pulled out, the sliding resistance is small and the introduction member 90 can be pulled out smoothly. Further, if the bottom surface side of the side pipe passage portion 12b on the tip end side is provided so as to have a length of two-thirds or more of the length of the side pipe passage portion 12b, all the portions that come into contact with the introduction member 90 are provided. Since it comes into contact with the sliding member 20, the sliding resistance is further reduced, and the introduced member can be pulled out smoothly.

(Second Embodiment)
A cross-sectional view of the Y-type connector 100 according to the second embodiment is shown in FIG. The Y-type connector 100 according to the second embodiment includes a Y-type connector main body 10 having a main pipe portion 11 and a side pipe portion 12, and a fixing member 30 attached to the base end side of the Y-type connector main body 10. The point that the pusher 40 and the screw cap 60 are provided is the same as that of the first embodiment. Since these configurations are almost the same as those of the first embodiment, the description thereof will be omitted.

The sliding member 20 is inserted into the Y-shaped connector main body 10 according to the second embodiment so as to include the confluence α between the main pipe passage portion 11a and the side pipe passage portion 12b. As the sliding member 20, a material having a higher slidability than the material of the Y-type connector main body 10, that is, a resin material having a low friction coefficient is used as in the first embodiment. Examples of the material used include polyacetal, polyamide, polytetrafluoroethylene and the like. The sliding member 20 is a portion that is particularly likely to come into contact with the introduction member 90 such as a guide wire or a microcatheter inserted from the side pipe passage portion 12b, that is, at least the main pipe passage portion 11a and the side pipe passage. At the confluence portion α with the portion 12b, the inner surface on the tip end side is arranged so as to be exposed to the side pipe passage portion 12b. By producing the sliding member 20 so as to straddle the main pipe passage portion 11a and the side pipe passage portion 12b in this way, the sliding member 20 is provided so as to project from the inner surface of the side pipe passage portion 12b as in the first embodiment. It is possible to prevent a step from being provided in the side pipe passage portion 12b. Preferably, as shown in FIG. 5, in addition to the confluence portion α between the main pipe passage portion 11a and the side pipe passage portion 12b, the length of the side pipe passage portion 12b is set on the bottom surface side of the tip side of the side pipe passage portion 12b. On the other hand, it is preferable to provide the length so as to be two-thirds or more. This is because when the introduction member 90 is pulled out, a contact portion β with the introduction member 90 is formed in the side pipe passage portion 12b in addition to the confluence portion α between the main pipe passage portion 11a and the side pipe passage portion 12b. Because there are many. In the first embodiment, as shown in FIG. 6, the sliding member 20 includes a side pipe passage forming portion 21 forming an inner surface on the tip side of the side pipe passage portion 12b and a side pipe portion 12 of the main pipe passage portion 11a. It has a main pipe passage forming portion 22 that forms an inner surface on the side. The side pipe passage forming portion 21 and the main pipe passage forming portion 22 are formed in a cross-sectional arc shape having a curvature similar to the inner diameter of the inner surface of the side pipe passage portion 12b. As shown in FIG. 5, the boundary α between the side pipe passage forming portion 21 and the main pipe passage forming portion 22 is formed to be curved so as to have a smooth curved surface. Further, the side pipe passage forming portion 21 is formed with a side pipe passage ring portion 23 fixed to the side pipe portion 12 in order to fix the position at the side pipe passage portion 12b. Further, a fixing ring portion 24a fixed from the side pipe passage forming portion 21 to the main pipe portion 11 via the side pipe passage ring portion 23, and a fixing ring portion 24a for fixing from the main pipe passage forming portion 22 to the main pipe passage portion 11a. The ring portion 24b is formed. Further, the sliding member 20 is formed with a plurality of fixing holes 25 so that movable pins (not shown) provided in the injection mold can be fixed. The position of the fixing hole 25 is not particularly limited, and can be appropriately selected and formed.

The sliding member 20 thus produced is produced by pouring the resin of the Y-type connector main body 10 into a movable pin provided in the mold while being set as an insert using the fixing hole 25. Will be done. After that, the Y-type connector 100 is completed by enclosing an embedding member such as an adhesive or resin in the molding hole 18 of the Y-type connector main body 10 communicating with the fixing hole 25 produced by the movable pin.

The Y-type connector 100 produced in this way is pulled out while being in contact with the sliding member 20 when the introduction member 90 inserted from the side pipe portion side is pulled out. In particular, the vicinity of the boundary between the side pipe passage forming portion 21 and the main pipe passage forming portion 22 is most strongly pressed and is likely to slide, but since the sliding member 20 is always present at this portion, the introduction member 90 has a small resistance and can be pulled out smoothly. Further, if the bottom surface side of the side pipe passage portion 12b on the tip end side is provided so as to have a length of two-thirds or more of the length of the side pipe passage portion 12b, all the portions that come into contact with the introduction member 90 are provided. Since it comes into contact with the sliding member 20, the sliding resistance is further reduced, and the introduced member can be pulled out smoothly. Further, the sliding member 20 is fixed to the Y-shaped connector main body 10 by the side pipe passage ring portion 23, the fixing ring portion 24a, and the fixing ring portion 24b. As a result, the sliding member 20 is prevented from moving in the longitudinal direction and the radial direction of the main pipe passage portion 11a. Therefore, even when the sliding member 20 is made of the Y-type connector main body 10 and a resin having low compatibility, the sliding member 20 can be securely fixed to the Y-type connector 100. Further, by enclosing the embedded member in the molding hole 18, the sliding member 20 is reduced from moving with respect to the Y-type connector 100.

In the first and second embodiments described above, only the sliding member 20 is inserted into the Y-type connector main body 10, but as shown in FIG. 7, the back side (Y-type) of the sliding member 20 is inserted. An elastic material 28 such as silicone rubber, urethane rubber, or fluororubber may be provided on the connector body (so that it is sandwiched between the connector body 10 and the sliding member 20). By providing such an elastic material 28, it is possible to absorb the force of pressing the sliding member 20 when pulling out the introduction member 90, and the introduction member 90 can be pulled out more smoothly.

Further, the side pipe portion 12 in the first embodiment and the second embodiment described above may be formed so as to be bendable as shown in FIG. For example, a bending member 26 in which a part of the side tube portion 12 of the sliding member 20 is made of an elastic resin having an elastic force such as polypropylene, polyethylene, polyoxymethylene, or a soft material such as urethane chloride in a tubular shape. A method of joining with the sliding member 20 and inserting it can be considered. At this time, as shown in FIG. 8, a part of the bending member 26 may be exposed to the outside and formed. The sliding member 20 may be provided on the inner surface side of the bending member 26. By providing the side pipe portion 12 with flexibility in this way, when the introduction member 90 is pulled out, the side pipe portion 12 bends when the introduction member 90 abuts and presses against the side pipe passage portion 12b. The pressing force can be absorbed and the introduction member 90 can be pulled out more smoothly.

In the first and second embodiments described above, as shown in FIG. 9, a Y-type connector 100 including a hemostatic valve 50 and a pusher 70 may be used.

The hemostatic valve 50 is used to prevent blood from flowing back when the fixing member 30 is released for inserting or removing the introduction member 90, and the introduction member 90 introduced into the main passage portion 11a is used for a short period of time. It is a member for facilitating the insertion and removal of the introduction member 90 by adjusting the tightening to the introduction member 90 when the introduction member 90 is taken in and out at any time by fixing the space. As shown in FIG. 10A, the hemostatic valve 50 is formed in a thin disk shape as a whole, and the surface on the base end side of the portion where the introduction member 90 is inserted is concave so as to gradually thicken from the center. The formed hemostatic valve recess 51 is formed. As shown in FIG. 10C, the hemostatic valve recess 51 has a conical or spherical shape so that at least the thinnest portion δ of the hemostatic valve 50 has a thickness of 1/2 or less of the thickness of the thickest portion γ of the hemostatic valve 50. Is formed in. More preferably, it is provided so as to have a thickness of 1/3 or less. As a result, the valve of the hemostatic valve 50 is formed so as to become thicker from the center toward the periphery. Therefore, when the rigidity is low and the insertion force is weak like a thin guide wire, the hemostatic valve 50 is inserted from the thin part in the center. In the case of a catheter with relatively high rigidity and strong insertion force, it can be inserted without any problem even in a place with a certain thickness, and the thickness of the member to be inserted ensures the passageability and the hemostatic performance. Can be improved. As shown in FIG. 10B, the hemostatic valve 50 is further formed with a plurality of slits 52 in the radial direction from the center. Preferably, the upper slit 52a having a notch from the base end side to the middle and the lower slit 52b having a notch from the lower end side to the middle may be arranged so as to be in a twisted position. An insertion portion 55 through which the introduction member 90 can be inserted is provided at the center by this notch. The number of slits 52 is not particularly limited. The hemostatic valve 50 thus produced is arranged on the upper stage of the pusher 40.

The hemostatic valve 50 can be pushed by a pusher 70, which will be described later, to expand the insertion portion 55, weaken the frictional force for inserting and removing the introduction member 90, or eliminate the frictional force to facilitate insertion of the introduction member 90. As long as it is manufactured as described above, it is not limited to the above-mentioned configuration.

As shown in FIG. 9, the pusher 70 has a disk portion 71 on the base end side, and has an extension portion 72 extending from the disk portion 71 into the screw cap 60. At the center of the pusher 70, an introduction member insertion hole 76 through which the introduction member 90 can be inserted is provided. The pusher 70 is provided so as to be movable in the longitudinal direction with respect to the screw cap 60. When the pusher 70 is pushed, the tip of the extending portion 72 presses the hemostatic valve 50 to insert the hemostatic valve 50. The portion 55 can be widened. That is, by opening the insertion portion 55 of the hemostatic valve 50, the introduction member 90 can be easily inserted, or the introduction member 90 inserted into the fixed main pipe passage portion 11a can be opened and inserted or pulled out. Can be made easier.

(Third Embodiment)
The Y-type connector 100 according to the third embodiment is a material that imparts slidability at least instead of inserting the sliding member 20 into the confluence of the main pipe passage portion 11a and the side pipe passage portion 12b. It is coated with a lubricating coating agent such as molybdenum sulfide, graphite, or polytetrafluoroethylene. It should be noted that the third embodiment is different only in that the sliding member 20 is eliminated in the drawings, and therefore, the same reference numerals as those in the above-described embodiment will be added to the description.

By adopting such a configuration, slidability is imparted to the confluence of the main pipe passage portion 11a and the side pipe passage portion 12b when the introduction member 90 is pulled out, so that the introduction member 90 can be pulled out smoothly. ..

When coating the lubricating coating agent, in addition to the confluence of the main pipe passage portion 11a and the side pipe passage portion 12b, the length of the side pipe passage portion 12b is on the bottom surface side of the tip side of the side pipe passage portion 12b. It may be coated so as to have a length of two-thirds or more.

Further, the inside of the side pipe passage portion 12b of the side pipe portion 12 is made of an elastic material such as silicon rubber, urethane rubber, or fluororubber, and absorbs the force of pressing the sliding member 20 when the introduction member 90 is pulled out. You may do so. By adopting such a configuration, the introduction member 90 can be pulled out smoothly. Further, the side tube portion 12 may be made of an elastic resin having elastic force such as polypropylene, polyethylene or polyoxymethylene, or a soft material such as urethane chloride in a tubular shape. By providing the side pipe portion 12 with flexibility in this way, when the introduction member 90 is pulled out, the side pipe portion 12 bends when the introduction member 90 abuts and presses against the side pipe passage portion 12b. The pressing force can be absorbed and the introduction member 90 can be pulled out more smoothly.

As shown in the above-described embodiment, it can be used as an auxiliary tool in surgery using a guide wire or a catheter.

10 ... Y-type connector main body, 11 ... main pipe, 11a ... main pipe passage, 12 ... side pipe, 12a ... screw groove, 12b ... side pipe passage, 18 ... molding hole, 20 ... sliding member, 21 ... Side pipe passage forming part, 22 ... Main pipe passage forming part, 23 ... Side pipe passage ring part, 24a ... Fixing ring part, 24b ... Fixing ring part, 25 ... Fixing hole, 26 ... Curved member, 28 ... Elastic material, 30 ... fixing member, 31 ... through hole, 40 ... pusher, 50 ... hemostatic valve, 51 ... hemostatic valve recess, 52 ... slit, 52a ... upper slit, 52b ... lower slit, 55 ... insertion part, 60 ... Screw cap, 63 ... Introduction member hole, 70 ... Pusher, 71 ... Disk part, 72 ... Extension part, 76 ... Introduction member insertion hole, 90 ... Introduction member, 95 ... Rotator, 95a ... Through hole, 95b ... Circular Groove, 100 ... Y-type connector

Claims (10)

A main pipe portion having a main pipe passage portion through which a linearly formed introduction member such as a guide wire or a catheter is inserted in the longitudinal direction and a side pipe portion having a side pipe passage portion extending laterally from the main pipe portion are provided. In the Y-type connector
Y-type connector A Y-type connector characterized in that a sliding member made of a material having a higher slidability than the material of the main body portion is inserted so as to be exposed at least on the inner surface of the side pipe passage portion. The sliding member includes a side pipe passage forming portion arranged on the inner surface of the base end side of the side pipe passage portion and a main pipe passage forming portion arranged on the side of the side pipe portion of the main pipe passage portion. I have
The Y-shaped connector according to claim 1, wherein the boundary between the side pipe passage forming portion and the main pipe passage forming portion is formed by a curved surface. The sliding member is characterized in that the side pipe passage forming portion and the main pipe passage forming portion are formed in a cross-sectional arc shape having the same curvature as the side pipe passage portion and the main pipe passage portion, respectively. The Y-type connector according to 2. The Y-type connector according to any one of claims 1 to 3, wherein the sliding member includes a fixing ring portion fixed to the main pipe portion. Any of claims 2 or 3, wherein the sliding member is provided with an elastic material such as silicon rubber, urethane rubber, or fluororubber on a part or all of the back surface of the side pipe passage forming portion. The Y-type connector according to item 1. The Y-type connector according to any one of claims 2, 3 or 5, wherein a part or all of the side tube portion has flexibility. A main pipe portion having a main pipe passage portion through which a linearly formed introduction member such as a guide wire or a catheter is inserted in the longitudinal direction and a side pipe portion having a side pipe passage portion extending laterally from the main pipe portion are provided. In the Y-type connector
A Y-type connector characterized in that at least the inner surface of the side pipe passage portion is coated with a coating having a higher slidability than the material of the Y-type connector main body portion. The Y-type connector according to claim 7, further characterized in that the confluence of the main pipe passage portion and the side pipe passage portion is coated with a coating having a higher slidability than the material of the Y-type connector main body portion. .. The Y-type connector according to claim 7 or 8, wherein an elastic material such as silicon rubber, urethane rubber, or fluororubber is provided on a part or all of the inner surface of the side tube portion. The Y-type connector according to any one of claims 7 to 9, wherein a part or all of the side tube portion has flexibility.

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