Thrombus-preventing flushing and sealing tube three-way valve for arteriovenous catheter

Abstract

The utility model belongs to the technical field of medical supplies, and particularly discloses an anti-thrombus flushing and sealing tube three-way valve for an arteriovenous catheter. The three-way valve comprises a three-way valve body, a vortex generating assembly is arranged in the three-way valve body, a vortex generating cavity is formed in the three-way valve body, the vortex generating assembly can guide flushing liquid to form vortexes when the flushing liquid passes through the vortex generating cavity, and after the vortexes enter a catheter cavity, the vortexes are separated from the vortex generating cavity. Compared with the traditional manual operation, the flushing device has the advantages that the wall of the catheter can be flushed continuously and stably in all directions, so that residual liquid medicine and blood components on the wall of the catheter can be removed more efficiently and uniformly, the risk of thrombus formation is reduced, damage to endangium or arterial spasm caused by non-uniform pressure of manual operation can be avoided, and the flushing process is safer and more effective; powerful support is provided for arteriovenous catheter anti-thrombus management, and the standardization of clinical operation and the safety of patient treatment are improved.

Description

Technical Field

[0001] This application relates to the field of medical supplies technology, and more specifically, to a three-way valve for anti-thrombotic flushing of arterial and venous catheters. Background Technology

[0002] In the clinical application of arterial and venous catheters, thrombosis remains a serious problem troubling medical staff. With the extension of catheter indwelling time, both arterial and venous catheters face a high risk of thrombosis. This can not only block the lumen and affect the smooth progress of treatment, but also cause serious complications such as embolism due to thrombus dislodgement, threatening the patient's life.

[0003] Current flushing procedures heavily rely on manual operation by medical staff. Conventional flushing methods require nurses to manually push and pause repeatedly to create a vortex to flush the lumen. However, this operation mode is not only time-consuming and laborious, increasing the workload of medical staff, but also prone to incomplete flushing due to individual differences in technique and improper control of force. This can leave residual medication or blood components on the catheter wall, which can become a potential cause of thrombosis. Furthermore, improper operation can exacerbate patient discomfort, further increasing the operation risk and patient suffering. Utility Model Content

[0004] To address the aforementioned issues, this application provides a three-way valve for preventing thrombosis in arteriovenous catheters.

[0005] The three-way valve for anti-thrombotic flushing and sealing arterial and venous catheters provided in this application adopts the following technical solution:

[0006] A three-way valve for preventing thrombosis and sealing arterial and venous catheters includes a three-way valve body, an eddy current generating component inside the three-way valve body, and an eddy current generating chamber inside the three-way valve body.

[0007] The number of vortex generating components is set to multiple groups. Each group of vortex generating components includes a guide vane. Each guide vane is used to generate vortices when the flushing fluid passes through the vortex generating chamber and then enters the conduit cavity to flush the conduit wall.

[0008] Furthermore, each guide vane is arranged in a spiral shape.

[0009] Furthermore, each vortex generating assembly also includes a rotating rod, with each guide vane fixedly installed on the outer wall of the corresponding rotating rod.

[0010] Furthermore, the vortex generating cavity is equipped with multiple fixed support frames inside, with each rotating rod located between two corresponding fixed support frames.

[0011] Furthermore, each rotating rod is rotatably connected to two corresponding fixed support frames at both ends, and each fixed support frame is fixedly connected to the inner wall of the vortex generating cavity.

[0012] Through the above technical solution, the spiral guide vane can guide the flushing fluid to form a vortex when it passes through the vortex generating chamber. After the vortex enters the conduit lumen, it can flush the conduit wall in an all-round, continuous and stable manner.

[0013] Furthermore, the inner wall of the vortex generating cavity is provided with multiple fixing rings, all of which are fixedly installed on the inner wall of the vortex generating cavity.

[0014] Furthermore, each fixed ring has multiple membrane flaps fixedly connected inside, and the multiple membrane flaps are distributed in a ring array.

[0015] Furthermore, each end of the three-way valve body is provided with an interface, and each interface is provided with a three-way cap on one side. Each interface is inserted into the corresponding three-way cap and is in an interference fit.

[0016] The above technical solution effectively separates the flushing fluid from the catheter lumen using a membrane flap.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] (1) The present invention uses a vortex generating component to guide the formation of a vortex when the flushing fluid passes through the vortex generating chamber. After the vortex enters the catheter lumen, it can flush the catheter wall in an all-round, continuous and stable manner. Compared with traditional manual operation, this can not only remove residual medication and blood components from the catheter wall more efficiently and evenly, reducing the risk of thrombosis, but also avoid damage to the vascular endothelium or arterial spasm caused by uneven pressure during manual operation. This makes the flushing process safer and more effective, providing strong support for the management of arterial and venous catheter thrombosis prevention, and improving the standardization of clinical operation and the safety of patient treatment.

[0019] (2) This utility model can be spliced ​​into a complete circle by means of the membrane flap when the tube is not flushed, which can effectively separate the flushing fluid from the catheter lumen. During flushing, it deforms and opens synchronously and uniformly under pressure, which can not only ensure the smooth passage of the flushing fluid, but also disperse the concentrated pressure by means of the fan-shaped structure and the distribution characteristics of the ring array, balance the pressure of the flushing fluid, avoid excessive pressure to damage the vascular endothelium or cause arterial spasm, thereby further reducing the risk of thrombosis and comprehensively improving the safety and reliability of arteriovenous catheter flushing and sealing. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 3 This is a plan view of the overall internal structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the three-way valve body and the three-way cap of this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure of the guide vane of this utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the diaphragm of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Three-way valve body; 2. Guide vane; 3. Rotary rod; 4. Fixed support frame; 5. Fixing ring; 6. Diaphragm flap; 7. Interface; 8. Three-way cap; 9. Vortex generating chamber. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] Reference Figures 1-6 A three-way valve for preventing thrombosis and sealing arteriovenous catheters includes a three-way valve body 1, an eddy current generating component inside the three-way valve body 1, and an eddy current generating chamber 9 inside the three-way valve body 1.

[0029] The number of vortex generating components is set to multiple groups. Each group of vortex generating components includes a guide vane 2. Each guide vane 2 is used to generate a vortex when the flushing fluid passes through the vortex generating chamber 9 and then enters the conduit cavity to flush the conduit wall.

[0030] Reference Figures 1-6 Each guide vane 2 is spirally arranged, and each vortex generating assembly also includes a rotating rod 3. Each guide vane 2 is fixedly installed on the outer wall of the corresponding rotating rod 3. The vortex generating cavity 9 is provided with multiple fixed support frames 4. Each rotating rod 3 is located between two corresponding fixed support frames 4. The two ends of each rotating rod 3 are rotatably connected to the two corresponding fixed support frames 4. Each fixed support frame 4 is fixedly connected to the inner wall of the vortex generating cavity 9.

[0031] The vortex generating component can generate a vortex when the flushing fluid passes through the vortex generating chamber 9 and then enter the catheter lumen to flush the catheter wall. The specific operation method is as follows: when medical staff perform flushing operation, they first prepare the appropriate flushing fluid, then find the interface 7 on the three-way valve body 1 for connecting the catheter lumen. The interface 7 is compatible with the interface 7 specifications and connection standards of the conventional arteriovenous catheter interface 7 on the market. Then, the arteriovenous catheter lumen is connected to the corresponding interface 7 to ensure a tight connection and no leakage. After that, prepare the flushing fluid container (such as a syringe or other common instruments) and connect the flushing fluid container to the remaining corresponding interface 7 on the three-way valve body 1.

[0032] After connection is complete, medical staff push the flushing fluid into the three-way valve body 1. When the flushing fluid flows into the vortex generating chamber 9, it impacts the spiral-shaped guide vane 2. Because the guide vane 2 is fixed to the outer wall of the rotating rod 3, and the two ends of the rotating rod 3 are rotatably connected to the inner wall of the vortex generating chamber 9 through the fixed support frame 4, the guide vane 2 will rotate relative to the fixed support frame 4 under the impact of the flushing fluid. The spiral-shaped guide vane 2 guides the flushing fluid to form a vortex. These vortices enter the catheter lumen along the tubing, flushing the catheter wall in an all-round, continuous and stable manner. Compared with traditional manual operation, it can remove residues more efficiently and evenly, reduce the risk of thrombosis, and avoid uneven pressure damage to blood vessels, completing a safe and effective flushing process and helping to manage catheter thrombosis.

[0033] The vortex generating component allows the spiral guide plate 2 to guide the flushing fluid through the vortex generating chamber 9 to form a vortex. After entering the catheter lumen, this vortex can flush the catheter wall in a comprehensive, continuous, and stable manner. Compared with traditional manual operation, this not only removes residual medication and blood components from the catheter wall more efficiently and evenly, reducing the risk of thrombosis, but also avoids damage to the vascular endothelium or arterial spasm caused by uneven pressure during manual operation. This makes the flushing process safer and more effective, providing strong support for the management of arteriovenous catheter thrombosis prevention and improving the standardization of clinical operations and the safety of patient treatment.

[0034] Reference Figures 1-5 The inner wall of the vortex generating cavity 9 is provided with multiple fixing rings 5, which are fixedly installed on the inner wall of the vortex generating cavity 9. Multiple membrane flaps 6 are fixedly connected inside each fixing ring 5. The multiple membrane flaps 6 are arranged in a ring array. The multiple membrane flaps 6 are arranged in a fan shape and can form a complete circle. The membrane flaps 6 are made of medical silicone material.

[0035] The arrangement of multiple fan-shaped flaps 6 separates the flushing fluid from the catheter lumen. Specifically, when medical staff push the flushing fluid into the vortex generating chamber 9, the pressure generated by the flushing fluid acts on the flaps 6. Due to the flexibility of the flaps 6, they deform under the impact of the flushing fluid, allowing the flushing fluid to pass smoothly through the three-way valve body 1 and enter the catheter lumen. At the same time, multiple flaps 6 expand and deform outward synchronously and uniformly under the pressure of the flushing fluid. Their fan-shaped structure and annular array distribution can disperse the concentrated pressure of the flushing fluid, allowing the pressure to be uniformly transmitted to the catheter lumen along the circumference, thereby achieving a balanced effect on the flushing fluid pressure and preventing excessive flushing fluid pressure from damaging the vascular endothelium or causing arterial spasm.

[0036] After flushing and sealing the catheter, the pressure of the flushing fluid on the flap 6 disappears. Thanks to its material properties and the assistance of the surrounding structure, the flap 6 automatically resets, reforming into a complete circle, thus maintaining a positive pressure state within the catheter lumen. This positive pressure effectively prevents blood from flowing back into the catheter, reducing the risk of thrombosis due to residual blood, ensuring the normal use of arteriovenous catheters and the health and safety of patients.

[0037] By using the flap 6, it can be assembled into a complete circle before flushing, effectively separating the flushing fluid from the catheter lumen. During flushing, it deforms and opens synchronously and uniformly under pressure, ensuring the smooth passage of the flushing fluid while dispersing concentrated pressure through its fan-shaped structure and ring array distribution characteristics, balancing the flushing fluid pressure and preventing excessive pressure from damaging the vascular endothelium or causing arterial spasm. After sealing, the flap 6 automatically resets due to its elasticity, reforming a complete seal, maintaining positive pressure within the catheter lumen, and preventing blood backflow that could lead to blood residue in the catheter, thereby further reducing the risk of thrombosis and comprehensively improving the safety and reliability of flushing and sealing arterial and venous catheters.

[0038] Reference Figure 4 Each end of the three-way valve body 1 is provided with an interface 7, and each interface 7 is provided with a three-way cap 8 on one side. Each interface 7 is inserted into the corresponding three-way cap 8 and is in an interference fit.

[0039] By interlocking the three-way cap 8 with the interface 7, a sealing protection can be achieved when the interface 7 is not connected to a conduit or flushing liquid container, preventing contaminants from entering or internal liquid from leaking out, and ensuring the cleanliness and safe use of the three-way valve body 1.

[0040] Working principle: When medical staff perform flushing, they first prepare the appropriate flushing solution, then find the interface 7 on the three-way valve body 1 for connecting the catheter lumen. The interface 7 is compatible with the interface 7 specifications and connection standards of the conventional arteriovenous catheter interface 7 on the market. Then, the arteriovenous catheter lumen is connected to the corresponding interface 7, ensuring a tight connection and no leakage. After that, a flushing solution container (such as a syringe or other commonly used instrument) is prepared, and the flushing solution container is connected to the remaining corresponding interface 7 on the three-way valve body 1.

[0041] After connection is complete, medical staff push the flushing fluid into the interior of the three-way valve body 1. When the flushing fluid flows into the vortex generating chamber 9, it impacts the spiral-shaped guide vane 2. Because the guide vane 2 is fixed to the outer wall of the rotating rod 3, and the two ends of the rotating rod 3 are rotatably connected to the inner wall of the vortex generating chamber 9 through the fixed support frame 4, the guide vane 2 will rotate relative to the fixed support frame 4 under the impact of the flushing fluid. The spiral-shaped guide vane 2 guides the flushing fluid to form a vortex. These vortices enter the catheter lumen along the tubing, flushing the catheter wall in an all-round, continuous and stable manner. Compared with traditional manual operation, it can remove residues more efficiently and evenly, reduce the risk of thrombosis, and avoid uneven pressure damage to blood vessels, completing a safe and effective flushing process and helping to manage catheter thrombosis.

[0042] When medical staff push the flushing fluid into the vortex generating chamber 9, the pressure generated by the flushing fluid acts on the membrane flap 6. Due to the flexibility of the membrane flap 6, it will deform under the impact of the flushing fluid, allowing the flushing fluid to pass smoothly through the three-way valve body 1 and enter the catheter lumen. At the same time, multiple membrane flaps 6 expand and deform outward synchronously and uniformly under the pressure of the flushing fluid. Its fan-shaped structure and annular array distribution characteristics can disperse the concentrated pressure of the flushing fluid, so that the pressure is uniformly transmitted to the catheter lumen along the circumference, thereby achieving a balanced effect on the flushing fluid pressure and preventing the flushing fluid pressure from being too high and damaging the vascular endothelium or causing arterial spasm.

[0043] After flushing and sealing the catheter, the pressure of the flushing fluid on the flap 6 disappears. Thanks to its material properties and the assistance of the surrounding structure, the flap 6 automatically resets, reforming into a complete circle, thus maintaining a positive pressure state within the catheter lumen. This positive pressure effectively prevents blood from flowing back into the catheter, reducing the risk of thrombosis due to residual blood, ensuring the normal use of arteriovenous catheters and the health and safety of patients.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A three-way valve for preventing thrombosis and sealing arteriovenous catheters, comprising a three-way valve body (1), characterized in that, The three-way valve body (1) is provided with a vortex generating component inside, and a vortex generating cavity (9) is opened inside the three-way valve body (1); The number of vortex generating components is set to multiple groups, and each group of vortex generating components includes a guide plate (2). Each guide plate (2) is used to generate a vortex when the flushing fluid passes through the vortex generating cavity (9) and then enter the conduit cavity to flush the conduit wall.

2. The three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 1, characterized in that: Each of the aforementioned guide vanes (2) is arranged in a spiral shape.

3. The three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 1, characterized in that: Each set of vortex generating components also includes a rotating rod (3), and each of the guide vanes (2) is fixedly installed on the outer wall of the corresponding rotating rod (3).

4. A three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 3, characterized in that: The vortex generating cavity (9) is provided with multiple fixed support frames (4) inside, and each rotating rod (3) is located between two corresponding fixed support frames (4).

5. A three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 4, characterized in that: Each of the rotating rods (3) is rotatably connected to two corresponding fixed support frames (4) at both ends, and each of the fixed support frames (4) is fixedly connected to the inner wall of the vortex generating cavity (9).

6. A three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 1, characterized in that: The inner wall of the vortex generating cavity (9) is provided with multiple fixing rings (5), and the multiple fixing rings (5) are fixedly installed on the inner wall of the vortex generating cavity (9).

7. A three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 6, characterized in that: Each of the fixed rings (5) has multiple membrane flaps (6) fixedly connected inside, and the multiple membrane flaps (6) are arranged in a ring array.

8. A three-way valve for preventing thrombosis and flushing the arterial and venous catheters according to claim 1, characterized in that: The three-way valve body (1) is provided with an interface (7) at its end. Each interface (7) is provided with a three-way cap (8) on one side. Each interface (7) is inserted into the corresponding three-way cap (8) and is in an interference fit.

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