Connecting valve special for removing thrombus

Abstract

The utility model relates to the technical field of medical instruments, in particular to a connecting valve special for removing thrombus, which comprises a thrombus guide tube, a first connector, a second connector, a hemostasis valve and a branch tube, a plug is arranged in the branch tube, a clamping block is arranged in a clamping groove formed in the plug, and the clamping block can move along the clamping groove; the thrombus guiding valve has the advantages that the thrombus guiding pipe is a straight pipe, the flowing path of thrombus in the valve is a straight line, no dead angle exists on the path, and thrombus blockage can be avoided; besides, the plug is arranged in the branch tube, and only a thrombus breaking device such as a guide wire is allowed to pass through the plug, so that thrombus cannot enter the branch tube, the thrombus breaking device such as the guide wire can enter the thrombus guide tube through the clamping groove, and normal use of the thrombus guide tube is not hindered; furthermore, the end, close to the thrombus guide tube, of the plug is in an arc shape with the same radian as the thrombus guide tube, so that the inner wall of the thrombus guide tube becomes smooth, dead angles in the thrombus guide tube are reduced, thrombus blockage is avoided, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a special connecting valve for thrombus removal. Background Technology

[0002] A thrombus is a clot that forms inside a blood vessel, typically composed of fibrin and platelets from the blood. Thrombus formation is a complex physiological process that can occur in arteries or veins, leading to a variety of serious health problems.

[0003] In the current technology, mechanical thrombectomy is a commonly used clinical treatment for acute thrombosis in blood vessels. In mechanical thrombectomy, the thrombus aspiration catheter needs to be connected to the suction connection tube and negative pressure pump through a Y-type connecting valve. One port of the Y-type connecting valve is used for medical devices such as guidewires and thrombus removal devices, and the other port is used for aspirating the thrombus.

[0004] Currently available Y-type connecting valves on the market have an external conical Luer connector at one end of the straight tube section and a hemostatic valve at the other end, while an internal conical Luer connector is installed on the branch tube section. The straight tube section is used for the operation of medical devices such as guidewires and thrombus removal devices (or thrombus fragmentation devices). The branch tube section is connected to a negative pressure suction pump for thrombus aspiration, resulting in a curved flow path of the thrombus inside the Y-type connecting valve, as shown in the attached diagram. Figure 9 As shown, there are dead angles at bends, which are prone to thrombosis and blockage, hindering the flow of thrombi. Clinically, blockages require flushing and unblocking, which can lead to reduced surgical efficiency and increased surgical time. Utility Model Content

[0005] The purpose of this invention is to provide a dedicated connecting valve for thrombus removal, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special connecting valve for thrombus removal, including a thrombus guide tube and a branch tube. The thrombus guide tube is a straight tube, and the branch tube is arranged around the thrombus guide tube. The branch tube and the thrombus guide tube form a "Y"-shaped structure and are internally connected.

[0007] The thrombus guiding tube is equipped with a first connector and a second connector at both ends, and a hemostatic valve is installed at the end of the branch tube away from the thrombus guiding tube.

[0008] The first connector is used to connect to the negative pressure suction device, the second connector is used to connect to the patient end thrombus suction catheter, and the branch tube is used to connect to the thrombus fragmentation device.

[0009] Preferably, the angle between one end of the first connector of the thrombus guiding tube and the branch tube is greater than 10 degrees and less than or equal to 10 degrees.

[0010] Preferably, the first connector is an inner tapered Luer connector; the second connector is an outer tapered Luer connector.

[0011] Preferably, a plug is provided inside the branch pipe, and a locking block is provided in the slot opened on the plug. The locking block can move along the slot to keep the slot in a sealed or open state.

[0012] Preferably, the plug is located at the connection between the branch tube and the thrombus guiding tube and is located inside the branch tube. The end of the plug near the thrombus guiding tube is arc-shaped, and the arc is the same as that of the thrombus guiding tube.

[0013] Preferably, the end of the card block away from the thrombus guiding tube is provided with a connecting plate, the connecting plate can move along the branch tube, a limiting plate is fixedly connected to the connecting plate, a pull plate is provided on the limiting plate, a sliding groove is opened on the branch tube, one end of the pull plate is locked in the sliding groove opened on the branch tube and can move along the sliding groove.

[0014] Preferably, the limiting plate has a square plate structure and a sealing gasket is provided on the limiting plate. The sealing gasket has a U-shaped plate structure and is fixedly connected to the side of the limiting plate. The sealing gasket can seal the connection between the limiting plate and the slide groove.

[0015] Preferably, the slide groove has a square groove structure, and a thrust spring is provided inside the slide groove. One end of the thrust spring is fixedly connected to the pull plate and the other end is fixedly connected to the branch pipe.

[0016] Preferably, the branch pipe has a square groove, which has a square groove structure, and a rubber block is placed inside the square groove. The rubber block has a square plate structure and can limit the position of the pull plate.

[0017] Preferably, the end of the plug away from the thrombus guiding tube is provided with a guide block, and the guide block has a through hole, so that the locking block can move along the locking groove and the through hole on the guide block.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The thrombus removal valve proposed in this invention features a straight thrombus guide tube, ensuring a straight flow path for the thrombus within the valve, eliminating dead angles and preventing thrombus blockage. Furthermore, a plug is installed within the branch tube, allowing only thrombus fragmentation devices such as guide wires to pass through, preventing thrombus from entering the branch tube. Simultaneously, by moving the connecting plate and locking block along the branch tube, the locking block disengages from the locking groove, allowing the guide wire and other thrombus fragmentation devices to enter the thrombus guide tube without hindering their normal operation. Finally, the end of the plug near the thrombus guide tube is arc-shaped with the same curvature as the guide tube, making the inner wall of the guide tube smooth, further reducing dead angles and preventing thrombus blockage, thus improving surgical efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the internal structure of the device of this utility model;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0024] Figure 5 This is a partial structural diagram of the device of this utility model;

[0025] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0026] Figure 7 This is a schematic diagram of part of the structure of the device of this utility model;

[0027] Figure 8 This is a schematic diagram of the guide block structure of the device of this utility model;

[0028] Figure 9 This is a schematic diagram of the flow path of thrombus aspiration in a Y-type valve in the prior art.

[0029] In the diagram: 1. Thrombus guiding catheter; 2. First connector; 3. Second connector; 4. Branch tube; 5. Hemostatic valve;

[0030] 6. Thrust spring; 7. Square groove; 8. Rubber block; 9. Pull plate; 10. Limiting plate; 11. Sealing gasket;

[0031] 12. Connecting plate; 13. Locking block; 14. Plug; 15. Locking groove; 16. Guide block; 17. Through hole; 18. Slide groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example 1

[0034] Please see Figures 1-8 This utility model provides a technical solution: a special connecting valve for thrombus removal, including a thrombus guiding tube 1 and a branch tube 4. The thrombus guiding tube 1 is a straight tube, and the branch tube 4 is arranged around the thrombus guiding tube 1. The branch tube 4 and the thrombus guiding tube 1 form a "Y" shape and are internally connected. The two ends of the thrombus guiding tube 1 are respectively provided with a first connector 2 and a second connector 3. The end of the branch tube 4 away from the thrombus guiding tube 1 is provided with a hemostatic valve 5. The first connector 2 is used to connect to a negative pressure suction device, the second connector 3 is used to connect to the patient end thrombus suction catheter, and the branch tube 4 is used to connect to a thrombus fragmentation device.

[0035] In practical use, the first connector 2 is connected to the negative pressure suction device, and the second connector 3 is connected to the thrombus aspiration catheter at the patient end. The thrombus fragmentation device is connected through the branch tube 4 to perform thrombus fragmentation on the thrombus in the patient's body. This ensures that the flow path of the aspirated thrombus in the thrombus removal special connection valve is in a straight line, with no dead angles in the thrombus flow path, avoiding blockage and improving surgical efficiency.

[0036] Example 2

[0037] Based on Example 1, in order to ensure that there are no dead angles in the path of thrombus flow and to facilitate the operation of different types and functions of thrombus fragmentation devices, the angle between one end of the first connector 2 of the thrombus guiding tube 1 and the branch tube 4 is greater than 0 degrees and less than or equal to 90 degrees. The second connector 3 and the first connector 2 are respectively fixed at both ends of the thrombus guiding tube 1 in a straight line. Furthermore, in order to facilitate rapid connection during surgery, the first connector 2 is an inner conical Luer connector and the second connector 3 is an outer conical Luer connector, which improves the effectiveness and operational efficiency of the device.

[0038] The plug 14 is located at the connection between the branch pipe 4 and the thrombus guiding tube 1 and is situated inside the branch pipe 4. The end of the plug 14 closest to the thrombus guiding tube 1 is arc-shaped, with the same curvature as the thrombus guiding tube 1. When the locking block 13 is engaged in the slot 15 on the plug 14, it forms a combination with the plug 14. The plug 14 is located inside the branch pipe 4, and the locking block 13 is located in the slot 15 on the plug 14. The locking block 13 can move along the slot 15, allowing the slot 15 to be in a sealed or open state. Located at the connection between the branch pipe 4 and the thrombus guiding tube 1, the connection between the thrombus guiding tube 1 and the branch pipe 4 is made smooth, and the inner wall of the thrombus guiding tube 1 is made smooth, reducing dead angles inside the thrombus guiding tube 1, avoiding thrombus blockage, and improving the effectiveness of the device.

[0039] Example 3

[0040] Based on Embodiment 2, a locking block 13 is provided to avoid affecting the normal use of the device. A connecting plate 12 is provided at the end of the locking block 13 away from the thrombus guiding tube 1. The connecting plate 12 can move along the branch tube 4. A limiting plate 10 is fixedly connected to the connecting plate 12. A pull plate 9 is provided on the limiting plate 10. A sliding groove 18 is opened on the branch tube 4. One end of the pull plate 9 is locked in the sliding groove 18 opened on the branch tube 4 and can move along the sliding groove 18. The pull plate 9 has a "convex" plate-shaped structure. By pulling the pull plate 9, it slides along the sliding groove 18. The sliding groove 18 has a square groove-shaped structure. A thrust spring 6 is provided in the sliding groove 18. One end of the thrust spring 6 is fixedly connected to the pull plate 9. The other end is fixedly connected to the branch pipe 4, which compresses the thrust spring 6. The limiting plate 10 has a square plate structure and a sealing gasket 11 is provided on the limiting plate 10. The sealing gasket 11 has a "U" shaped plate structure and is fixedly connected to the side of the limiting plate 10. The sealing gasket 11 can seal the connection between the limiting plate 10 and the slide groove 18. When the limiting plate 10 moves, it always covers the slide groove 18, so that the limiting plate 10 moves with it. The limiting plate 10 and the sealing gasket 11 seal the slide groove 18 to prevent dust and other impurities from entering the device. Then, take out the rubber block 8 and pull the pull plate 9 to the top of the square groove 7. Then, insert the rubber block 8 into the square groove 7 to limit the pull plate 9.

[0041] A square groove 7 is provided on the branch pipe 4. The square groove 7 has a square groove structure. A rubber block 8 is provided inside the square groove 7. The rubber block 8 has a square plate structure and can limit the pull plate 9. The slot 15 has a circular groove structure. The inner diameter of the slot 15 is equal to the diameter of the block 13. The connecting plate 12 has a semi-circular plate structure with a bevel on one side. A bevel is also provided on one end of the block 13. A guide block 16 is provided at the end of the plug 14 away from the thrombus guiding tube 1. A through hole 17 is provided on the guide block 16. The block 13 can move along the slot 15 and the through hole 17 on the guide block 16. The guide block 16 has an inclined surface on its inner side, and the through hole 17 has a circular groove structure with an inner diameter equal to that of the slot 15. This causes the limiting plate 10 to pull the connecting plate 12 and the locking block 13 upward, causing the locking block 13 to disengage from the slot 15 and exposing the slot 15. The guide wire can then be inserted into the branch tube 4 through the hemostasis valve 5. Guided by the inclined surface on the inner side of the guide block 16, one end of the guide wire is inserted into the through hole 17 and then into the slot 15. Continuing forward, it enters the thrombus guiding tube 1. This ensures that there are no dead angles in the thrombus guiding tube 1 without affecting the normal use of the device.

[0042] In actual use, the thrombus guiding tube 1 is a straight tube, and the flow path of the thrombus within the valve is straight with no dead angles, thus avoiding thrombus blockage. Furthermore, a plug 14 is installed inside the branch tube 4, allowing only thrombus fragmentation devices such as guide wires to pass through, preventing thrombi from entering the branch tube 4. Simultaneously, by moving the connecting plate 12 and the locking block 13 along the branch tube 4, the locking block 13 disengages from the locking groove 15, allowing the guide wire and other thrombus fragmentation devices to enter the thrombus guiding tube 1 without hindering normal operation. Moreover, the end of the plug 14 closest to the thrombus guiding tube 1 is arc-shaped with the same curvature as the thrombus guiding tube 1, making the inner wall of the thrombus guiding tube 1 smooth, further reducing dead angles within the thrombus guiding tube 1, preventing thrombus blockage, and improving surgical efficiency.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thrombus removal dedicated connection valve comprising a thrombus guide tube (1), a branch tube (4), characterized in that: The thrombus guide pipe (1) is a straight pipe, and the branch pipe (4) is arranged in the circumferential direction of the thrombus guide pipe (1), and the branch pipe (4) and the thrombus guide pipe (1) form a "Y" type structure and are internally communicated; The thrombus guide pipe (1) is provided with a first connector (2) and a second connector (3) at two ends respectively, and the branch pipe (4) is provided with a hemostasis valve (5) at one end away from the thrombus guide pipe (1). The first connector (2) is used for connecting a negative pressure suction device, the second connector (3) is used for connecting a patient end thrombus suction catheter, and the branch pipe (4) is used for connecting an access thrombus crushing device.

2. The thrombectomy-specific junction valve of claim 1, wherein: The first connector (2) is an inner conical luer connector; the second connector (3) is an outer conical luer connector.

3. The thrombectomy-specific junction valve of claim 1, wherein: The plug (14) is arranged at the connection position of the branch pipe (4) and the thrombus guide pipe (1) and located in the branch pipe (4), one end of the plug (14) close to the thrombus guide pipe (1) is in an arc shape, and the arc is the same as that of the thrombus guide pipe (1).

4. The thrombectomy-specific junction valve of claim 1, wherein: The connecting plate (12) is arranged at one end of the clamping block (13) away from the thrombus guide pipe (1), the connecting plate (12) can move along the branch pipe (4), the limiting plate (10) is fixedly connected to the connecting plate (12), the pull plate (9) is arranged on the limiting plate (10), the sliding groove (18) is arranged on the branch pipe (4), one end of the pull plate (9) is clamped on the sliding groove (18) arranged on the branch pipe (4) and can move along the sliding groove (18).

5. The thrombectomy-specific junction valve of claim 4, wherein: The sliding groove (18) is in a square groove structure, the push spring (6) is arranged in the sliding groove (18), one end of the push spring (6) is fixedly connected with the pull plate (9), and the other end is fixedly connected with the branch pipe (4).

6. The thrombectomy-specific junction valve of claim 4, wherein: The square groove (7) is arranged on the branch pipe (4) and is in a square groove structure, the rubber block (8) is arranged in the square groove (7) and is in a square plate structure, and the rubber block (8) can limit the pull plate (9).

7. The thrombectomy-specific junction valve of claim 6, wherein: The limiting plate (10) is in square plate structure, and a sealing gasket (11) is arranged on the limiting plate (10), wherein the sealing gasket (11) is in a 凵 ” type plate structure, the sealing gasket (11) is fixedly connected with the side surface of the limiting plate (10), and the sealing gasket (11) can seal the connecting part of the limiting plate (10) and the sliding groove (18).

8. The thrombectomy-specific junction valve of claim 6, wherein: The guide block (16) is arranged at one end of the plug (14) away from the thrombus guide pipe (1), the through hole (17) is arranged on the guide block (16), and the clamping block (13) can move along the clamping groove (15) and the through hole (17) arranged on the guide block (16).

9. The thrombectomy-specific junction valve of claim 6, wherein: ​ 10. A thrombectomy-specific connection valve according to any of claims 4-9, characterized in that: ​

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