JP7199715B2 - Y-shaped connector with hemostatic valve - Google Patents

Description

The present invention relates to a Y-shaped connector with a hemostasis valve.

Conventionally, a Y-shaped connector with a hemostasis valve is used to facilitate the operation of inserting or withdrawing a guidewire or catheter. As a Y-shaped connector with a hemostasis valve, in a Y-connector having a tubular main branch through which a catheter is passed and a tubular sub-branch for injecting a liquid agent, a tubular sub-branch is inserted inside the main branch by longitudinal compression. A first hemostasis valve and a second hemostasis valve that can prevent the outflow of blood by providing a fixed valve for fixing the catheter passed through the hole whose diameter is reduced and allowing passage of the catheter in a wrapped state. Further, a cylindrical opener movable 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 range of movement of the opener (Patent Document 1).

However, such a Y-shaped connector with a hemostasis valve is bent and inserted so that the central portion is pushed out in the catheter insertion direction when the catheter is passed through the first hemostasis valve. When such a structure is adopted, there is a problem that the resistance tends to increase when inserting or pulling the catheter inserted into the hemostasis valve. In addition, since the fixation valve has a structure in which the diameter of the hole is reduced by compressing it in the longitudinal direction to fix the catheter, the reduction ratio of the central part for fixation is small, and the thickness of the catheter or guide wire that can be fixed is small. there was a limit. In addition, there is a problem that a relatively strong force is required when turning the screw that fixes the locking valve, and that it is difficult to finely adjust the locking force of the catheter.

JP 2005-261759 A

Therefore, the present invention has been made to solve the above-mentioned problems, and when a catheter is inserted into the hemostasis valve, the deflection of the hemostasis valve is reduced, and the thickness of the guide wire and catheter to be inserted is reduced. To provide a Y-shaped connector with a hemostasis valve, which is improved in operability by reducing resistance when it is inserted or pulled, and in which the operability of a fixed valve is improved.

The present invention employs the following means to achieve the above objects.

The Y-shaped connector with a hemostatic valve according to the present invention is
a body portion having a main tube portion having an insertion portion in a longitudinal direction through which a linear introduction member such as a guide wire or a catheter is inserted; and a side tube portion extending laterally from the main tube portion;
A Y-shaped connector with a hemostasis valve, through which the introduction member inserted through the body portion can pass, and a hemostasis valve that prevents outflow of blood,
The hemostasis valve is for a concave hemostasis valve, in which the thinnest part at the center of the proximal side has a thickness of 1/2 or less of the thickest part of the hemostasis valve, and the thickness gradually increases in the radial direction. It is characterized by having a recess and having a plurality of slits extending radially from the center.

By providing the hemostatic valve with a thin portion such that the thinnest central portion of the concave hemostatic valve recess has a thickness of 1/2 or less of the thickest portion of the hemostatic valve, introduction of a guide wire, catheter, etc. is facilitated. If the thickness of the member is thin, it can pass through a thin portion with low resistance, and if it is thick, it can pass through a thick portion with relatively high resistance. It may be a Y-shaped connector with a hemostasis valve having a more resistive hemostasis valve.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve recess may be characterized in that the thinnest portion of the hemostasis valve concave portion has a thickness of ⅓ or less of the thickness of the thickest portion of the hemostasis valve at the center on the proximal end side.

By adopting such a configuration, it is possible to obtain a hemostatic valve that has suitable resistance even when a thinner introduction member is used.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve recess may be characterized by having a central thick-walled portion at the center with a recess formed at the vertex.

By adopting such a configuration, when a thin introduction member is inserted, the leading end of the introduction member can be positioned by the concave portion, so that the Y-shaped connector with a hemostatic valve can be provided so that the thin introduction member can be inserted more easily. can.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostatic valve recess may be provided with a pusher abutting portion capable of surface contact with a front end surface of a pusher for opening the hemostatic valve recess.

By providing the plunger abutting portion in this manner, the hemostatic valve can be opened more quickly when the plunger is pressed. In addition, since the hemostatic valve is pushed in by surface contact, the hemostatic valve can be opened more reliably.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostatic valve recess may be characterized by having a thin portion on the bottom surface side.

By providing the thin portion, the rigidity of the lower surface of the hemostatic valve recess can be reduced, and the hemostatic valve recess can be easily bent downward.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve may be characterized in that it is arranged so that a gap is provided on the outer circumference.

By providing a gap on the outer periphery, when the introduction member is inserted into the hemostatic valve, the hemostatic valve can expand so as to expand toward the outer periphery. As a result, a Y-shaped connector with a hemostasis valve can be provided that has suitable resistance to introduction members of various thicknesses.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve may be characterized by having projections on its outer periphery.

By providing such a projection, the hemostasis valve can be easily positioned in the center of the mounting area.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve has an inclined surface on at least a part of the outer periphery thereof such that the diameter on the lower side becomes smaller, and is mounted on a supporting surface having an inclined surface substantially identical to the inclined surface. It may be

By adopting such a configuration, it is possible to easily position the hemostatic valve at the center of the mounting area.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The slit of the hemostatic valve recess may be characterized in that the slit cut on the proximal end side and the slit cut on the distal end side are at twisted positions.

By adopting such a configuration, it is possible to prevent the slit from completely forming a gap, thereby improving the hemostatic effect of preventing passage of blood flow.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
The hemostasis valve may be characterized by stacking a plurality of members.

By adopting such a configuration, hemostatic valves having different shapes can be produced by selecting hemostatic valves having different shapes for each layer of stacked hemostatic valves.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
A fixed valve having a narrow proximal end is formed on the distal side of the hemostatic valve,
Having a pusher disposed on the proximal side of the fixed valve and having a concave portion formed on the surface on the distal side,
The guide wire or catheter may be fixed by moving the pusher to the distal end side and pressing the fixing valve toward the center by the concave portion of the pusher.

According to the fixed valve of the present invention, since the fixed valve can be moved directly toward the introduction member side instead of being compressed in the longitudinal direction, it is possible to deal with introduction members having different thicknesses. . Also, it becomes possible to finely adjust the fixing strength.

Furthermore, in the Y-shaped connector with a hemostatic valve according to the present invention,
A closer having a claw for pressing the fixed valve may be provided between the fixed valve and the pusher.

By adopting such a configuration, it is possible to prevent a force from being applied to the fixed valve in the twisting direction, so it is possible to reduce the situation where the fixing force changes when the twist is reversed.

According to the Y-shaped connector with a hemostatic valve according to the present invention, it is possible to provide a Y-shaped connector with a hemostatic valve that has suitable hemostatic performance and permeability according to the outer diameter of an introduction member such as a guide wire or a catheter.

FIG. 1 is a front view of a Y-shaped connector 100 with a hemostatic valve according to the first embodiment. FIG. 2 is a cross-sectional view of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment. FIG. 3 is an exploded perspective view of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment. FIG. 4 is a cross-sectional view showing a state in which the fixed valve 30 of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment is tightened. 5A and 5B are perspective views showing the hemostatic valve 60 of the Y-shaped connector 100 with hemostatic valve according to the first embodiment, and FIG. 5C is a sectional view. FIG. 6 is a sectional view showing a modification of the hemostatic valve 60 of the Y-shaped connector 100 with hemostatic valve according to the first embodiment. FIG. 7 is a perspective view showing an application example of the hemostatic valve 60 of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment. FIG. 8 is a cross-sectional view showing the Y-shaped connector 100 with a hemostatic valve when the hemostatic valve 60 of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment is used. FIG. 9 is a cross-sectional view showing an application example of the hemostatic valve 60 of the Y-shaped connector 100 with a hemostatic valve according to the first embodiment. FIG. 10 is a cross-sectional view of a Y-shaped connector 100 with a hemostatic valve according to the second embodiment. FIG. 11 is a cross-sectional view showing a state in which the fixing valve 30 of the Y-shaped connector 100 with a hemostatic valve according to the second embodiment is tightened.

Next, an embodiment of the Y-shaped connector 100 with a hemostatic valve according to the present invention will be described in detail with reference to the drawings. It should be noted that the embodiments and drawings described below illustrate a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. It can be changed as appropriate within the range. For convenience of explanation, the terms "proximal side" and "distal side" in the claims and the specification refer to the upper side of the Y-shaped connector 100 with hemostasis valve as shown in FIG. The (proximal side) is referred to as the "proximal side", and the lower side (distal end side) is referred to as the "distal side".

As shown in FIGS. 1 and 2, the Y-shaped connector 100 with a hemostatic valve according to the first embodiment mainly includes a body portion 10 having a main pipe portion 11 and a side pipe portion 12, and a base end side of the body portion 10. A fixed valve 30, a closer 40, a pusher 50, a hemostatic valve 60, a screw cap 70, and a plunger 80 are provided.

As shown in FIG. 1 or 2, the body portion 10 includes a main pipe portion 11 longitudinally extending from the base end side to the distal end side and a side pipe portion 12 extending laterally from the middle portion of the main pipe portion 11. have The main tube portion 11 has an insertion portion 11a extending longitudinally through which an elongated linear introduction member 90 such as a guide wire or a catheter is inserted. An insertion portion 11b having a long diameter and widened is formed so that a part of the 50 can be accommodated therein. The side tube portion 12 is a portion for injecting a drug solution, a contrast medium, etc., and has a screw groove 12a formed at its end so that a drug injector or the like can be connected.

The fixing valve 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 fixed valve 30 is made of an elastic material such as elastomer, rubber, or silicon, and as shown in FIG. 2 or FIG. An insertion hole 31 through which the introduction member 90 is inserted is formed from the proximal side to the distal side. In the first embodiment, a step 32 is provided to match the inner surface of the closer 40, which will be described later. By providing the step 32, the closers 40 are sequentially tightened from the distal end side, so that the fixing strength of the introduction member 90 can be easily adjusted.

The closer 40 is a member for tightening the fixed valve 30 described above, and as shown in FIG. there is The pawl 41 is formed so that at least a portion of the pawl 41 is in close contact with the periphery of the fixed valve 30. As shown in FIG. Thus, the introduction member 90 can be fixed.

The pusher 50 has a function of tightening the closer 40 to tighten the introduction member 90 by the fixed valve 30 and a function of supporting the hemostatic valve 60 . The pusher 50 is formed with a through-hole 55 penetrating from the base end side to the tip end side at the center, and a concave portion 50a having a substantially spherical or ellipsoidal surface on the bottom side. As a result, the inner surface of the recess 50a presses the tip of the fixed valve 30 and/or the claw 41 of the closer 40, and the tip of the fixed valve 30 and/or the claw 41 of the closer 40 moves toward the introduction member 90 (toward the center). can be made In addition, the pusher 50 has steps from below such that the cylindrical recessed portion 51 on the proximal end side becomes a lower recessed portion 51a formed of a narrow-diameter cylinder and an upper recessed portion 51b formed of a narrow-diameter cylindrical portion. is provided in A hemostatic valve 60 is mounted on the upper concave portion 51b.

The hemostasis valve 60 is a member for preventing blood from flowing out when the fixation of the fixation valve 30 is released in order to insert or remove the introduction member 90 . As shown in FIG. 5A, the hemostasis valve 60 is formed in the shape of a thin disk as a whole, and has a concave shape on the proximal side of the site into which the introduction member 90 is inserted so that the thickness gradually increases from the center. A formed hemostasis valve recess 61 is formed. As shown in FIG. 5C, the hemostasis valve recess 61 is conical or spherical so that at least the thinnest portion β of the hemostasis valve 60 has a thickness equal to or less than half the thickness of the thickest portion α of the hemostasis valve 60. formed into a shape. More preferably, it is provided so as to have a thickness of 3/1 or less. As a result, the hemostasis valve 60 is formed so that it becomes thicker as it goes from the center toward the periphery. Therefore, if the rigidity of the guide wire is low and the insertion force is weak, such as a thin guide wire, it should be inserted from the thin portion at the center. When the rigidity is relatively high and the insertion force is strong, such as a catheter, it can be inserted without problems even in a place with a certain thickness. can be improved. Also, since a resistance force acts according to the thickness of the introduction member 90 even after it is inserted in the same manner, the introduction member 90 can be moved with an appropriate force. As shown in FIG. 5B, the hemostasis valve 60 is further formed with a plurality of slits 62 extending radially from the center. Preferably, as in the first embodiment, the upper slit 62a cut halfway from the base end and the lower slit 62b cut halfway from the bottom end are arranged at twisted positions. . Note that the number of slits 62 is not particularly limited. Also, in order to improve the hemostatic performance even in a thin guide wire, as shown in FIG. 6A, a central thick portion 63 formed thick only in the vicinity of the central portion may be formed. In this case, by providing a central recess 64 at the center, like a volcanic vent, it becomes easier to position the tip of the thin guidewire at the center of the hemostasis valve 60 . These hemostatic valves 60 do not need to be manufactured integrally, and as shown in FIG. may be used. By dividing and forming in this way, the upper hemostatic valve 60a and the lower hemostatic valve 60b having different thicknesses of the hemostatic valve recesses 61, shapes of the slits 62, widths of the slits 62, etc., can be used in combination. , the optimum form can be selected and laminated for use. Moreover, the hemostasis valve 60 may be provided with a distal recess 66 formed in a recessed shape on the distal end side, as shown in FIG. 6C.

The hemostatic valve 60 manufactured in this way is arranged in the upper concave portion 51 b of the pusher 50 . At this time, the hemostatic valve 60 is made one size smaller than the inner wall surface of the upper recessed portion 51b, and a gap γ (Fig. 2) are formed. For this reason, when the introduction member 90 is inserted into the hemostatic valve 60, the outer peripheral side of the hemostatic valve 60 can be pushed by the introduction member 90 and spread out. A suitable pressing force can be secured without a large difference in force.

The hemostasis valve 60 can also be applied and used as follows. As shown in FIG. 7A, a pusher abutting portion 69 is provided at a portion to be pushed by the tip of the pusher 80, with which the pusher 80 abuts. As shown in FIG. 8, the presser contact portion 69 is formed to be flush with the outer peripheral surface, and when the presser 80 is pushed downward, the plane of the tip of the presser 80 contacts the surface. It is a surface formed so as to press with. By providing the pusher abutting portion 69 in this way, when the pusher 80 is pushed, the hemostatic valve 60 can be opened more quickly than the hemostatic valve 60 described above, and can be pushed in with surface contact. , the hemostasis valve 60 can be opened more reliably. Moreover, since the inner diameter is reduced by providing the pusher contact portion 69 in the hemostatic valve concave portion 61 of the hemostatic valve 60, the shape can be firmly supported against pressure from the inside. Moreover, as shown in FIG. 7B, the pusher contact portion 69 may be provided on the entire circumference. That is, it is provided so that a small hemostatic concave portion 61 is formed inside the slit 62 . With such a configuration, the pusher abutting portion 69 can be pressed by the entire front end of the pusher 80 . When the pusher contact portion 69 is provided on the entire circumference in this way, the rigidity is lowered by providing the thin portion 69a on the back side, and the hemostatic valve concave portion 61 is formed so as to easily bend downward. good too. By adopting such a configuration, it is possible to facilitate passage of a guide wire or catheter.

Moreover, the hemostatic valve 60 and the pusher 50 can also be applied and used as follows. FIG. 9A shows Application Example 1 of the hemostatic valve 60 . The pusher 50 of Application 1 has an inclined surface 51c between the upper recessed portion 51b and the lower recessed portion 51a of the recessed portion 51 of the pusher 50, and the inclined surface 51c has a smaller diameter on the lower side. 51c forms the bearing surface of hemostasis valve 60; The hemostatic valve 60 is formed to have an inclined surface 65 substantially similar to this inclined surface 51c, and is arranged so as to face each other. By adopting such a configuration, the hemostasis valve 60 is automatically placed in the center of the concave portion 51 of the pusher 50 when it is pushed in the distal direction after being placed.

FIG. 9B shows application example 2 of the relationship between the hemostatic valve 60 and the pusher 50 . The concave portion 51 of the pusher 50 of Application Example 2 does not have a step and is formed in a substantially cylindrical shape, and a support surface for the hemostatic valve 60 is formed at the lower end of the cylindrical shape. The hemostasis valve 60 is formed in a cylindrical shape with a diameter slightly smaller than that of a cylindrical shape, and is formed to have a height equal to the height of the concave portion 51 of the pusher 50 . The hemostasis valve 60 has a plurality of flexible projections 68 on its outer circumference, which center the hemostasis valve 60 (in FIG. Although it is drawn to protrude, it is actually arranged in a squashed state.) By forming in this manner, the hemostasis valve 60 can be centered, and when the introducer member 90 is inserted, the projections 68 can be further collapsed to allow the hemostasis valve 60 to spread outward.

The screw cap 70 functions as a lid member for housing the fixed valve 30, the closer 40, the pusher 50, and the hemostatic valve 60 in the main body 10, and the position of the pusher 50 relative to the longitudinal direction of the main body. It has a function to adjust The screw cap 70 is a tubular member having a screw thread formed on its inner circumference that can be engaged with a screw thread formed on the outer circumference of the proximal end of the main body 10, and pushes down the pusher 50 by rotating it. can be pulled up or lifted.

As shown in FIG. 2, the pusher 80 has an operating disc portion 81 on the base end side, and an extension portion 82 extending from the operating disc portion 81 into the screw cap 70 . . The pusher 80 is provided movably in the longitudinal direction with respect to the screw cap 70 , and when the pusher 80 is pushed, the distal end of the extended portion 82 presses the hemostatic valve concave portion 61 of the hemostatic valve 60 . The valve of hemostasis valve 60 can be opened. That is, by opening the hemostasis valve 60, the introduction member 90 can be easily inserted, or the fixed introduction member 90 can be released to facilitate insertion and withdrawal. As shown in FIG. 3, the pusher 80 has an engaging recess 84 that can be engaged with the engaging piece 72 formed on the screw cap 70 on the outer periphery of the extended portion 82. The rotation can also rotate the screw cap 70 at the same time. Further, the presser 80 is provided with a detachment prevention piece 86 that engages with the engagement piece 72 of the screw cap 70 in order to prevent it from being completely detached from the screw cap 70 .

Furthermore, a rotator 85 may optionally be provided at the tip of the main body 10 . As shown in FIG. 2, the rotator 85 has a through hole 85a through which the introduction member 90 is inserted, and a circular groove 85b formed therearound. A guiding catheter or other catheter can be connected to this circular groove 85b.

An example of how to use the Y-shaped connector 100 with a hemostatic valve manufactured as described above will be shown. First, a guiding catheter (not shown) is attached to the circular groove 85 b of the rotator 85 . In this state, the guiding catheter is inserted to the treatment site. After that, a guide wire is inserted with the fixed valve 30 opened. At this time, the hemostatic valve 60 may be closed or open. In the Y-shaped connector 100 with a hemostatic valve according to the present embodiment, the guidewire insertion site is formed thin and can spread around, so even a thin guidewire can be easily inserted. Of course, depending on the operability of the operator, the hemostatic valve 60 may be inserted in a state in which the pusher 80 is slightly pushed and the hemostatic valve 60 is slightly opened to the extent that blood flow does not flow backward. After the guidewire reaches the treatment site, the catheter is inserted along the guidewire. At this time, the hemostasis valve 60 may be in a closed state or an open state as in the case of inserting the guide wire. Even when the hemostatic valve 60 is in a closed state, the hemostatic valve 60 can spread around, so that it can be inserted with moderate resistance. After that, when the screw cap 70 is twisted to push down the pusher 50 toward the distal end, the claw 41 of the closer 40 is pushed inward as shown in FIG. The center of 30 can be narrowed to secure the catheter. From this state, the guide wire is pulled out. At this time, since the hemostatic valve 60 is closed, backflow of blood can be reduced. Thereafter, treatment is performed by inserting a therapeutic instrument such as a balloon catheter or a stent through the lumen of the catheter, depending on the treatment method. The fixing valve 30 is opened when the catheter is pulled out after the treatment is completed. As a result, the blood flows back up to the hemostasis valve 60, but is stopped by the hemostasis valve 60, and further backflow is prevented. After pulling out the catheter, the guiding catheter is pulled out, and the treatment is completed.

According to the Y-shaped connector 100 with a hemostatic valve according to this embodiment, when the introduction member 90 is inserted, the resistance when the introduction member 90 is inserted through the hemostatic valve concave portion 61 is reduced. It can be easy to insert regardless. In addition, when the hemostasis valve 60 is inserted or removed after being inserted, the hemostatic valve 60 is made one size smaller than the upper recessed portion 51b, and since it can spread around, the thickness of the introduced member 90 to be inserted becomes thicker. Since the rate at which the pressing force for pressing the introduction member 90 is increased can be kept low, it is possible to reduce deterioration of the passing performance.

In addition, by using the hemostatic valve 60 having a thick wall thickness only in the central portion, especially when a thin guide wire is used, positioning of the tip of the guide wire is facilitated, and hemostatic performance is ensured while ensuring passageability. can also be improved.

Further, when the introduction member 90 is fixed by the fixed valve 30, the fixed valve 30 according to the present embodiment is not crushed, but directly moved toward the center by the closer 40. , the fixing force can be easily adjusted. Further, since the rotation of the pusher 50 is not transmitted to the fixed valve 30, the possibility of twisting the fixed valve 30 can be reduced. Thereby, a stable fixing force can be generated. In addition, compared to the case of crushing, the adjustment range for tightening the center is widened, and it is possible to appropriately handle from a thick catheter to a thin guide wire.

(Second embodiment)
A Y-shaped connector 100 with a hemostatic valve according to the second embodiment is shown in FIGS. 10 and 11. FIG. The body portion 10, the pusher 50, the hemostatic valve 60, the screw cap 70, and the plunger 80 of the Y-shaped connector 100 with a hemostatic valve according to the second embodiment are the same as those in the first embodiment, so description thereof is omitted. do.

The Y-shaped connector 100 with a hemostatic valve according to the second embodiment differs greatly from the first embodiment in that the closer 40 is not provided. As shown in FIG. 11 , the pusher 50 directly tightens the fixed valve 30 to fix the introduction member 90 . By adopting such a configuration, it is possible to move the fixed valve 30 toward the center and fix the introduction member 90 without using the closer 40 .

As shown in the above-described embodiments, it can be used as an aid in surgical operations using guide wires and catheters.

DESCRIPTION OF SYMBOLS 10... Main-body part 11... Main pipe part 11a... Insertion part 11b... Insertion part 12... Side pipe part 12a... Screw groove 30... Fixed valve 31... Insertion hole 32... Step 40... Closer 41 Claw 42 Base 50 Pusher 50a Concave portion 51 Concave portion 51a Lower concave portion 51b Upper concave portion 51c Inclined surface 55 Through hole 60 Hemostasis valve 60a Above Hemostatic valve 60b Lower hemostasis valve 61 Hemostasis valve concave portion 62 Slit 62a Upper slit 62b Lower slit 63 Central thick portion 64 Central concave portion 65 Inclined surface 66 Tip side concave portion 68 Protrusion 70 Screw cap 72 Engaging piece 80 Pusher 81 Operating disk portion 82 Extended portion 84 Engaging concave portion 85 Rotator 85a Penetration Hole 85b Circular groove 86 Prevention piece 90 Introductory member 100 Y-shaped connector with hemostatic valve

Claims (9)

a body portion having a main tube portion having an insertion portion in a longitudinal direction through which a linear introduction member such as a guide wire or a catheter is inserted; and a side tube portion extending laterally from the main tube portion;
A Y-shaped connector with a hemostasis valve, through which the introduction member inserted through the body portion can pass, and a hemostasis valve that prevents outflow of blood,
The hemostasis valve is for a concave hemostasis valve, in which the thinnest part at the center of the proximal side has a thickness of 1/2 or less of the thickest part of the hemostasis valve, and the thickness gradually increases in the radial direction. A recess is formed, and a plurality of thin-walled portions radially V-shaped when viewed from the back side are formed on the back side of the recess for the hemostatic valve, and a plurality of slits are formed radially from the center. have,
A Y-shaped connector with a hemostatic valve , wherein the hemostatic valve concave portion has a center thick portion with a concave portion formed at the apex thereof . 2. The hemostasis valve with a hemostasis valve according to claim 1, wherein the thinnest portion of the hemostasis valve concave portion at the center on the proximal side has a thickness of ⅓ or less of the thickness of the thickest portion of the hemostasis valve. Y-type connector. 3. The hemostatic valve recess according to claim 1 or 2, wherein the hemostatic valve recess is provided with a presser abutting portion capable of surface-contacting with a distal end surface of a presser for opening the hemostatic valve recess. Y-shaped connector with hemostatic valve. The Y-shaped connector with a hemostatic valve according to any one of claims 1 to 3, wherein the hemostatic valve is arranged so that a gap is provided on the outer periphery thereof. 5. The Y-shaped connector with a hemostatic valve according to any one of claims 1 to 4, wherein the hemostatic valve is provided with projections on the outer periphery thereof. The hemostatic valve has an inclined surface on at least a part of the outer periphery so that the diameter on the lower side becomes smaller, and is mounted on a supporting surface having an inclined surface substantially identical to the inclined surface. The Y-shaped connector with a hemostatic valve according to any one of claims 1 to 5. 7. The slit of the hemostatic valve recess according to any one of claims 1 to 6, wherein the slit cut on the proximal end side and the slit cut on the distal end side are at twisted positions. Y-shaped connector with hemostatic valve. The Y-shaped connector with a hemostatic valve according to any one of claims 1 to 7, wherein the hemostatic valve is formed by stacking a plurality of members. a body portion having a main tube portion having an insertion portion in a longitudinal direction through which a linear introduction member such as a guide wire or a catheter is inserted; and a side tube portion extending laterally from the main tube portion;
A Y-shaped connector with a hemostasis valve, through which the introduction member inserted through the body portion can pass, and a hemostasis valve that prevents outflow of blood,
The hemostasis valve is for a concave hemostasis valve, in which the thinnest part at the center of the proximal side has a thickness of 1/2 or less of the thickest part of the hemostasis valve, and the thickness gradually increases in the radial direction. A recess is formed, and a plurality of thin-walled portions radially V-shaped when viewed from the back side are formed on the back side of the recess for the hemostatic valve, and a plurality of slits are formed radially from the center. have,
A fixed valve having a narrow proximal end is formed on the distal side of the hemostatic valve,
Having a pusher disposed on the proximal side of the fixed valve and having a concave portion formed on the surface on the distal side,
By moving the pusher distally, the recess of the pusher presses the fixing valve toward the center to fix the guide wire or the catheter;
A Y-shaped connector with a hemostatic valve, comprising a closer having a claw for pressing the fixed valve between the fixed valve and the pusher .

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