Side tube cap and Y-connector

Abstract

To provide a side pipe part cap and a Y-shaped connector that when a catheter or a guide wire is inserted from a side pipe part, cause little resistance and enable smooth insertion and extraction.SOLUTION: A Y-shaped connector body part 10 comprises: a main pipe part 11 including, in a longer direction, a main pipe passage part 11a into which a linearly formed introduction member 90 such as a guide wire or a catheter is inserted; and a side pipe part 12 that extends in a lateral direction from the main pipe part 11 and includes a side pipe passage part 12b. A side pipe part cap 70 is attached to the side pipe part 12 and includes a sliding tube 75 attached to a tip of a cap part 74, the sliding tube including a lumen communicating from the cap part 74 and made from material that is softer and has higher slidability than material of the Y-shaped connector body part 10.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a side pipe cap and a Y-type connector. [Background technology]

[0002] Conventionally, Y-shaped connectors have been used to facilitate the insertion or pulling of guidewires or catheters. One proposed Y-shaped connector is one in which a cylindrical sub-branch for injecting a liquid agent branches off from a cylindrical main branch through which a catheter passes, and the main branch is provided with a fixed valve that is cylindrical and has a hole whose diameter is reduced by longitudinal compression to fix the catheter passed through the hole, as well as first and second hemostatic valves that allow the catheter to pass through in an enclosed state and prevent blood from leaking out, and further provided with a cylindrical opener that is longitudinally movable on the base end side of the main branch, with only the first hemostatic valve being disposed within the range of movement of the opener (Patent Document 1).

[0003] However, with such a Y-shaped connector, when a guidewire or catheter is inserted from the sub-branch side, the guidewire or catheter bends sharply at the point where it joins the main branch, creating a large resistance when inserting or removing the guidewire or catheter, making it difficult to insert or remove it. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-261759 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the present invention has been made to solve the above-mentioned problems, and has an object to provide a side pipe portion cap and a Y-type connector which have a main pipe portion having a main pipe passage portion in the longitudinal direction through which a linear introducing member such as a guidewire or catheter is inserted, and a side pipe portion extending laterally from the main pipe portion, and which has a side pipe portion cap attached to the side pipe portion of a Y-type connector main body which has a main pipe portion having a main pipe passage portion in the longitudinal direction through which a linear introducing member such as a guidewire or catheter is inserted, thereby enabling a catheter or guidewire to be inserted and removed smoothly with little resistance when inserted from the side pipe portion. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention takes the following measures.

[0007] The side pipe cap according to the present invention is a side pipe cap attached to a side pipe of a Y-type connector main body, the side pipe having a main pipe passage in a longitudinal direction through which a linearly shaped introduction member such as a guide wire or a catheter is inserted, and a side pipe having a side pipe passage extending laterally from the main pipe, The Y-shaped connector is characterized by comprising a cap portion that is attached to the side tube portion, and a sliding tube that is attached to the tip of the cap portion, has a lumen that communicates with the cap portion, and is made of a material softer than the material of the Y-shaped connector main body.

[0008] The side tube cap according to the present invention can be attached to the side tube of the Y-type connector to attach a sliding tube made of a soft material to the inside of the lumen of the side tube. This allows the soft material to be placed in the lumen at a location where an introduction member such as a guide wire or catheter is likely to come into contact and cause resistance, for example, the junction of the side tube passage and the main tube passage, or in the vicinity thereof, and the sliding tube comes into contact with the introduction and withdrawal. This reduces resistance when inserting and removing, allowing for smooth insertion and removal. In addition, it is possible to prevent the guide wire, catheter, etc. passed through the side tube from directly contacting the Y-type connector body and wearing down the material of the Y-type connector body.

[0009] In addition, in the side tube cap of the present invention, the sliding tube may be made of a material having higher slidability than the material of the Y-type connector main body.

[0010] By placing a soft, highly slidable material within the lumen at or near the junction of the side pipe passage portion and the main pipe passage portion, the resistance when inserting and removing the catheter can be further reduced, allowing the catheter to be inserted and removed smoothly.

[0011] In the side tube cap according to the present invention, the sliding tube may be formed so that a tip end thereof is inclined with respect to the longitudinal direction.

[0012] By adopting an obliquely cut configuration, the sliding tube can be positioned right up to the main pipe section, making it possible to effectively protect the joining portion of the side pipe passage section and the main pipe passage section.

[0013] Furthermore, in the side pipe portion cap according to the present invention, the sliding tube may be long enough to reach the main pipe passage portion.

[0014] By adopting such a configuration, it is possible to reduce the possibility that an introduction member such as a guidewire or catheter will come into contact with the side surfaces of the main tubular portion or the side tubular portion at the junction of the main tubular portion and the side tubular portion.

[0015] Furthermore, in the side tube portion cap according to the present invention, the sliding tube may be characterized in that it is rotatable from the outside.

[0016] By adopting this configuration, even if the tip of the sliding tube is cut at an angle, it can be adjusted and installed in a suitable direction within the side pipe section or the main pipe section.

[0017] Furthermore, in the side tube portion cap according to the present invention, the sliding tube may be detachable.

[0018] By adopting such a configuration, when the sliding tube is not required, the sliding tube can be removed and the connector can be used as a normal Y-type connector.

[0019] Furthermore, in the side tube cap of the present invention, the sliding tube may be selected from tubes made of silicone rubber, fluororubber, polyethylene, fluorine-based elastomer, polyurethane-based elastomer, polystyrene-based elastomer and polyester-based elastomer, tubes having a lubricant such as silicone oil applied thereto, and tubes having a lubricant such as silicone oil blended therein.

[0020] By using these materials, introduction members such as guidewires and catheters can be smoothly inserted and removed, and the sliding tube can be prevented from being worn down by sliding with the introduction members such as guidewires and catheters.

[0021] Furthermore, in the side tube portion cap according to the present invention, the sliding tube may be characterized by having a two-layer structure.

[0022] By adopting a two-layered sliding tube, it is possible to provide a sliding tube that is suitably designed in terms of both overall flexibility and slidability of the inner surface. For example, by selecting a material that prioritizes flexibility for the outer layer and a material that prioritizes slidability for the inner layer, it is possible to provide a sliding tube that is more flexible and has good slidability.

[0023] Furthermore, in the side tube cap of the present invention, the sliding tube may be characterized in that the inner side of the two-layer structure is a paraxylylene-based polymer, a fluororesin layer, a fluorine-containing resin layer, or a DLC coating.

[0024] By using such a material, it is possible to provide a sliding tube having high slidability on its inner circumferential surface.

[0025] The present invention further provides a Y-type connector having the above-mentioned side tube portion cap attached thereto.

[0026] The present invention also provides a Y-type connector body including a main pipe portion having a main pipe passage portion in a longitudinal direction through which a linearly formed introduction member such as a guide wire or a catheter is inserted, and a side pipe portion having a side pipe passage portion extending in a lateral direction from the main pipe portion; The present invention provides a Y-type connector, characterized in that a sliding tube made of a material softer than the material of the Y-type connector main body is adhesively fixed inside the side tube passage portion.

[0027] With this configuration, a soft material with high sliding properties is placed in the lumen at or near the junction of the side pipe passage portion and the main pipe passage portion, reducing resistance when inserting and removing the catheter and allowing it to be inserted and removed smoothly. Effect of the Invention

[0028] With the side tube cap and Y-shaped connector of the present invention, when an introduction member such as a guide wire or catheter is inserted from the side tube side, the part that comes into contact when the introduction member is pulled out has high slidability, allowing the introduction member to be pulled out smoothly without resistance. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a perspective view of a Y-connector 100 according to the first embodiment. [Diagram 2]FIG. 2 is a cross-sectional view of the Y-connector 100 according to the first embodiment. [Diagram 3] FIG. 3 is a perspective view of the side tube cap 70 according to the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing another embodiment of the Y connector 100 according to the first embodiment. [Diagram 5] FIG. 5 is a cross-sectional view showing still another embodiment of the Y connector 100 according to the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view of a Y-connector 100 according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Next, an embodiment of the side tube cap 70 and 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 are merely examples of some of the embodiments of the present invention, and are not intended to limit the present invention to these configurations. They can be modified as appropriate without departing from the gist of the present invention. For ease of explanation, in the claims and the specification, the "base end side" and the "tip side" refer to the upper side (hand side) shown in FIG. 1 as the "base end side" and the lower side (distal end side) as the "tip side" with respect to the Y-type connector 100.

[0031] (First embodiment) As shown in Figures 1 and 2, the Y-type connector 100 of the first embodiment comprises a Y-type connector main body 10 having mainly a main pipe portion 11 and a side pipe portion 12, a screw cap 60 attached to the base end side of the main pipe portion 11 of the Y-type connector main body 10, a side pipe portion cap 70 provided on the base end side of the side pipe portion 12, and a rotator 95.

[0032] The Y-shaped connector main body 10 has a main pipe 11 extending in the longitudinal direction from the base end side to the tip end side, and a side pipe 12 extending laterally from the middle of the main pipe 11. The main pipe 11 has a main pipe passage 11a penetrating in the longitudinal direction through which a thin linear introduction member 90 such as a guidewire or a catheter is inserted, and a fixing member 30 is housed on the base end side. The side pipe 12 has a side pipe passage 12b communicating with the main pipe passage 11a from the end of the side pipe 12, and is used when injecting a medicinal solution, a contrast medium, etc., or when inserting an introduction member 90 such as a guidewire or a catheter separately from the main pipe passage 11a. The end of the side pipe 12 has a screw groove 12a so that an attachment device such as a drug injector can be connected, as shown in FIG. 2.

[0033] The fixing member 30 is used when the introduction member 90 is to be strongly fixed for a relatively long time, and can be fixed by pressing the introduction member 90 from the periphery. The fixing member 30 is made of elastomer, rubber, silicon, etc., and is formed in a cylindrical shape with 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 screw cap 60, narrowing the through hole 31, and the introduction member 90 can be tightened and fixed.

[0034] The screw cap 60 is a cylindrical member having a screw thread formed on its inner circumference that can engage with a screw thread formed on the outer circumference of the base end side of the Y-type connector main body 10, and can be rotated to press or release the fixing member 30. By tightening the screw cap 60, the fixing member 30 can be pressed 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 therethrough.

[0035] A rotator 95 may be provided at the tip of the Y-connector main body 10. As shown in Fig. 2, the rotator 95 has a through hole 95a penetrating the base end side and the tip 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 catheters can be connected to this circular groove 95b.

[0036] As shown in FIG. 3, the side tube cap 70 is attached to the base end side of the side tube 12, and includes a cap portion 74 attached to the side tube 12 and a sliding tube 75 having a lumen inside. The cap portion 74 is formed with a screw groove 71 so that it can be attached to the screw groove 12a of the side tube 12. The side tube cap 70 is provided with a sliding tube 75 made of a material that is more flexible and has a higher sliding property than the Y-type connector main body 10, i.e., a resin material having a low friction coefficient, so that it is disposed in the side tube passage portion 12b when attached to the side tube 12. Examples of materials used for the sliding tube 75 include, but are not limited to, tubes made of silicone rubber, fluororubber, polyethylene, fluorine-based elastomer, polyurethane-based elastomer, polystyrene-based elastomer, polyester-based elastomer, etc. These tubes may be coated with a lubricant such as silicone oil, or may be mixed with a lubricant such as silicone oil. The sliding tube 75 may be provided at least in the side pipe passage portion 12b, but preferably, the sliding tube 75 is provided so as to be located at a portion that is particularly likely to come into contact when the introduction member 90, such as a guide wire or a microcatheter, inserted from the side pipe passage portion 12b is pulled out. Furthermore, preferably, as shown in Fig. 2, since the introduction member 90 often comes into direct contact with the Y-type connector main body 10 at the junction α between the main pipe passage portion 11a and the side pipe passage portion 12b or in the vicinity of the junction α, the introduction member 90 is provided so as to protrude slightly from the inner surface of the side pipe passage portion 12b, so that the introduction member 90 can be prevented from coming into direct contact with the Y-type connector main body 10 at the junction α. ​​Furthermore, the cap portion 74 is formed with a connection screw groove 74a so that various devices, such as a liquid medicine injector, can be attached.

[0037] When the introduction member 90 inserted from the side tube portion 12 of the Y-type connector 100 thus manufactured is pulled out, the introduction member 90 is pulled out while abutting against the sliding tube 75. Therefore, when the introduction member 90 is pulled out, the sliding resistance is small and the introduction member 90 can be pulled out smoothly.

[0038] Although the tip of the sliding tube 75 may be formed in a plane perpendicular to the longitudinal direction as shown in Fig. 4, it is preferable to form it so that it is oblique to the longitudinal direction as shown in Fig. 2. By forming it obliquely, it is possible to cover a larger part of the inner circumferential surface compared to the case where it is formed in a perpendicular plane, and it is possible to reduce the surface area where the side pipe passage portion 12b of the Y-type connector main body 10 is exposed, and it is possible to effectively position the sliding tube 75 at the junction α of the main pipe passage portion 11a and the side pipe passage portion 12b.

[0039] 5, the side tube portion cap 70 is formed of a first cap portion 74b and a second cap portion 74c, and is preferably provided so that the sliding tube 75 can rotate when the side tube portion cap 70 is attached to the side tube portion 12. This allows the sliding tube 75 to be adjusted to an optimal position even if the orientation of the sliding tube 75 is not appropriate when the side tube portion cap 70 is attached to the side tube portion 12.

[0040] The sliding tube 75 may be provided so as to be freely detachable from the cap portion 74. By providing it so as to be freely detachable, when the sliding tube 75 is not required, the sliding tube 75 can be removed and the connector can be used as a normal Y-type connector.

[0041] The sliding tube 75 may also have a two-layer structure. By providing the two-layer structure, for example, a highly flexible material is used for the outer layer and a highly slidable material is used for the inner layer, so that both flexibility and slidability can be efficiently imparted. In this case, the inner periphery of the two-layer structure may be coated with a paraxylylene-based polymer, a fluororesin layer, a fluorine-blended resin layer, or a DLC (Diamond-Like Carbon) coating, a polyacetal coating, a polyamide coating, a polytetrafluoroethylene coating, or the like.

[0042] Second embodiment A Y-type connector 100 according to the second embodiment is shown in Fig. 6. The Y-type connector 100 according to the second embodiment differs from the first embodiment in that the sliding tube 75 is not attached to the side tube cap 70, but is instead bonded to the side tube passage portion 12b of the Y-type connector main body 10 with an adhesive. The Y-type connector main body 10 is the same as in the first embodiment, and the side tube cap 70 is the same as in the first embodiment except that it is not connected to the sliding tube 75, so a description thereof will be omitted.

[0043] As in the first embodiment, the material of the sliding tube 75 may be silicone rubber, fluororubber, polyethylene, fluorine-based elastomer, polyurethane-based elastomer, polystyrene-based elastomer, polyester-based elastomer, etc. The position of the sliding tube 75 and the shape of the tip may be the same as in the first embodiment.

[0044] According to the Y-shaped connector of the second embodiment, when an introduction member 90 such as a guidewire or catheter is inserted from the side tube portion 12, the portion that comes into contact when the introduction member 90 is pulled out has high slidability, allowing for smooth removal without resistance. [Industrial Applicability]

[0045] As shown in the above-mentioned embodiment, it can be used as an auxiliary tool in surgery using a guide wire or a catheter. [Explanation of symbols]

[0046] 10...Y-type connector main body, 11...main pipe portion, 11a...main pipe passage portion, 12...side pipe portion, 12a...thread groove, 12b...side pipe passage portion, 30...fixing member, 31...through hole, 60...screw cap, 63...hole for introduction member, 70...cap for side pipe portion, 71...thread groove, 74...cap portion, 74a...connection thread groove, 74b...first cap portion, 74c...second cap portion, 75...sliding tube, 90...introduction member, 95...rotator, 95a...through hole, 95b...circular groove, 100...Y-type connector

Claims

1. A side pipe cap for a side pipe portion of a Y-shaped connector body includes a main pipe portion having a main pipe passage portion in a longitudinal direction through which a linearly formed introduction member such as a guide wire or a catheter is inserted, and a side pipe portion having a side pipe passage portion extending in a lateral direction from the main pipe portion, the side pipe portion being attached to the side pipe portion, A cap for a side tube portion, comprising: a cap portion attached to the side tube portion; and a sliding tube attached to the tip of the cap portion and having a lumen communicating with the cap portion, the sliding tube being made of a material that has higher slidability than the material of the Y-type connector main body portion and is softer than the material of the Y-type connector main body portion.

2. 2. The cap for a side tube section according to claim 1, wherein the sliding tube has a tip formed so as to be inclined with respect to a longitudinal direction.

3. 3. The side pipe cap according to claim 1, wherein the sliding tube has a length that reaches the main pipe passage.

4. 4. The cap for a side tube portion according to claim 1, wherein the sliding tube is externally rotatable.

5. 5. The cap for a side tube portion according to claim 1, wherein the sliding tube is removable.

6. A cap for a side tube portion as described in any one of claims 1 to 5, characterized in that the sliding tube is selected from tubes made of silicone rubber, fluororubber, polyethylene, fluorine-based elastomer, polyurethane-based elastomer, polystyrene-based elastomer and polyester-based elastomer, tubes having a lubricant such as silicone oil applied thereto, and tubes having a lubricant such as silicone oil blended therein.

7. 7. The cap for a side tube portion according to claim 1, wherein the sliding tube has a two-layer structure.

8. 8. The cap for a side tube portion according to claim 7, wherein the inner periphery of the two-layer structure of the sliding tube is a paraxylylene-based polymer, a fluororesin layer, a fluorine-containing resin layer, or a DLC coating.

9. A Y-shaped connector comprising the side pipe portion cap according to any one of claims 1 to 8 attached thereto.

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