Anti-backflow arteriopuncture catheter

Abstract

The utility model relates to the field of medical treatment, and discloses an anti-backflow artery puncture catheter which comprises a first catheter, a fixing assembly is arranged on the outer side of the first catheter, one end of the first catheter is fixedly connected with a connecting base, and the other end of the first catheter is fixedly connected with an anti-backflow assembly. The countercurrent assembly comprises a fixing pipe, the interior of the fixing pipe is fixedly connected to one side of the first guide pipe, a first cavity is formed in the fixing pipe, a second cavity is formed in the fixing pipe, a connecting block is fixedly connected to the inner wall of the fixing pipe, an input hole is formed in the connecting block, and a circular plate is slidably connected to the inner wall of the second cavity. According to the utility model, liquid passing through the interior of the catheter I flows into the fixed tube and flows into the cavity I through the input hole, so that the impact force on the circular plate is increased, the circular plate can be better moved downwards, and the cavity II is blocked, thereby avoiding the occurrence of a backflow condition, effectively preventing blood from flowing back, and improving the operation safety and stability; and the infection risk is reduced.

Description

Technical Field

[0001] This utility model relates to the medical field, and in particular to an arterial puncture catheter for preventing backflow. Background Technology

[0002] A catheter is a medical tool used to guide, deliver fluids, or insert into narrow passages within the body, and is widely used in clinical treatment and diagnosis. It is made of soft yet durable materials, such as silicone or plastic, and is ergonomically designed to ensure patient comfort and safety. There are many types of catheters, including nasogastric tubes, urinary catheters, and central venous catheters, each with specific uses to help doctors perform precise treatments.

[0003] In existing technologies, blood tends to flow back during arterial puncture catheterization. This backflow not only increases the risk of infection but also affects the field of vision and the accuracy of catheter positioning.

[0004] To address the above issues, an anti-backflow arterial puncture catheter is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-backflow arterial puncture catheter, which aims to improve the problem in the prior art where blood easily flows back during puncture. Blood backflow not only increases the risk of infection, but also affects the operating field and the accuracy of catheter positioning.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-backflow arterial puncture catheter, comprising a catheter one, a fixing component provided on the outside of the catheter one, a connecting seat fixedly connected to one end of the catheter one, and an anti-backflow component fixedly connected to the other end of the catheter one;

[0007] The countercurrent assembly includes a fixed tube, which is fixedly connected to one side of the first conduit. The fixed tube has a cavity one and a cavity two inside. A connecting block is fixedly connected to the inner wall of the fixed tube, and an input hole is opened inside the connecting block. A circular plate is slidably connected to the inner wall of the second cavity. The second conduit is fixedly connected to the outer side of the fixed tube, and a syringe is disposed on the outer side of the second conduit.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a fixing strap, the inner side of which is disposed on the outer side of the conduit. Multiple fixing blocks are fixedly connected inside the fixing strap. A Velcro closure is fixedly connected to one side of the fixing strap, and a Velcro closure is fixedly connected to the other side of the fixing strap.

[0010] As a further description of the above technical solution:

[0011] The outer side of the circular plate is slidably connected to the inside of the cavity.

[0012] As a further description of the above technical solution:

[0013] The outer side of the fixing block is snapped onto the outer side of the conduit.

[0014] As a further description of the above technical solution:

[0015] The Velcro mother and the Velcro daughter are bonded together.

[0016] As a further description of the above technical solution:

[0017] The fixing tube is cylindrical.

[0018] As a further description of the above technical solution:

[0019] The second cavity is a cylindrical cavity.

[0020] As a further description of the above technical solution:

[0021] The circular plate is positioned on top of the connecting block.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the liquid inside the conduit flows into the fixed tube and into the cavity through the inlet hole, which increases the impact force on the circular plate, making it easier for the circular plate to move downward and block the cavity, thereby preventing backflow. This effectively prevents blood backflow, improves operational safety and stability, and reduces the risk of infection.

[0024] 2. In this utility model, by securing the excess catheter inside the fixing block on the inner wall of the fixing band, and then wrapping the catheter around the arm with Velcro and Velcro, the catheter is stably fixed, reducing the risk of movement and dislodgement, and improving patient comfort and operational safety. Attached Figure Description

[0025] Figure 1 This is a three-dimensional view of the anti-backflow arterial puncture catheter proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the circular plate structure of the anti-backflow arterial puncture catheter proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the fixing block for the anti-backflow arterial puncture catheter proposed in this utility model.

[0028] Legend:

[0029] 1. Connector; 2. First conduit; 3. Fixing strap; 4. Fixing tube; 5. Connecting block; 6. Input hole; 7. Round plate; 8. Syringe; 9. Second conduit; 10. Fixing block; 11. First cavity; 12. Second cavity; 13. Velcro; 14. Velcro. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 - Figure 3 An embodiment of the present invention provides: an anti-backflow arterial puncture catheter, including a catheter 2, a fixing component provided on the outside of the catheter 2, a connecting seat 1 fixedly connected to one end of the catheter 2, and an anti-backflow component fixedly connected to the other end of the catheter 2.

[0032] The countercurrent assembly includes a fixed tube 4, which is fixedly connected to one side of the first conduit 2. The fixed tube 4 has a cavity 11 and a cavity 12 inside. A connecting block 5 is fixedly connected to the inner wall of the fixed tube 4. An input hole 6 is opened inside the connecting block 5. A circular plate 7 is slidably connected to the inner wall of the cavity 12. A second conduit 9 is fixedly connected to the outer side of the fixed tube 4. A syringe 8 is provided on the outer side of the second conduit 9.

[0033] Specifically, syringe 8 is used to inject the drug into catheter 2 9, catheter 2 9 transmits the drug to fixed tube 4, circular plate 7 is used to block backflow, inlet hole 6 is used for the drug to continue flowing to catheter 1 2 after passing through circular plate 7, cavity 1 11 is used for the drug to collect after passing through inlet hole 6, cavity 2 12 allows the drug to pass through under normal circumstances, but in the case of backflow, the drug pushes circular plate 7 down and blocks cavity 2 12, catheter 1 2 delivers the drug to connecting seat 1, and finally delivers it into the human body, connecting seat 1 is used to fix catheter 1 2.

[0034] Reference Figure 3 The fixing component includes a fixing strap 3, the inner side of the fixing strap 3 is disposed on the outer side of the conduit 2, multiple fixing blocks 10 are fixedly connected inside the fixing strap 3, a Velcro 13 is fixedly connected to one side of the fixing strap 3, and a Velcro 14 is fixedly connected to the other side of the fixing strap 3.

[0035] Specifically, the fixing strap 3 is used to fix the catheter 2 to the arm or other parts to ensure the stability of the catheter. Multiple fixing blocks 10 on the inner side of the fixing strap 3 are used to hold the catheter 2 in place to prevent it from sliding or shifting. The Velcro 13 and Velcro 14 are used to wrap the fixing strap 3 around the arm and fix it by adhesive to ensure that the catheter 2 is firmly fixed in the required position.

[0036] Reference Figure 1 - Figure 3 The outer side of the circular plate 7 is slidably connected to the inside of the cavity 11, the outer side of the fixing block 10 is snapped onto the outer side of the conduit 2, the Velcro 13 and the Velcro 14 are bonded together, the fixing tube 4 is cylindrical, the cavity 2 12 is a cylindrical cavity, and the circular plate 7 is set on the top of the connecting block 5.

[0037] Specifically, the circular plate 7 is used to seal the cavity 12 under backflow conditions to prevent the medicine from flowing back. The fixing block 10 is used to fix and stabilize the catheter 2 to prevent it from moving. The Velcro 13 and Velcro 14 are bonded together to wrap the fixing strap 3 and fix it to the arm or other parts to ensure the stability of the catheter 2. The fixing tube 4 is cylindrical and is used to contain the medicine and transfer it through the cavity 12 and the cavity 11. The cavity 12 is a cylindrical cavity that allows the medicine to pass through under normal conditions and is sealed by the circular plate 7 under backflow conditions. The circular plate 7 is used to seal the cavity 12 under backflow conditions to prevent the medicine from flowing back.

[0038] Working principle: In use, the connector 1 and the needle core are inserted into the blood vessel together through the puncture needle. Then the needle core is withdrawn, leaving the connector 1 in the blood vessel. The excess catheter 2 is stuck inside the fixing block 10 on the inner wall of the fixing band 3. The catheter 2 is then wrapped around the arm by the Velcro 13 and Velcro 14. The syringe 8 is used to inject into the connector 1. At this time, the medicine enters the fixing tube 4 through the second catheter 9. The medicine pushes the round plate 7 against the top of the connector block 5. At this time, the medicine enters the cavity 11 through the second cavity 12, and then flows into the body through the inlet port 6 through the connector 1 via the catheter 2. When backflow occurs, the liquid inside the first catheter 2 will flow into the fixing tube 4 and into the cavity 11 through the inlet port 6. This increases the impact force on the round plate 7, which can better move the round plate 7 downward, thus blocking the cavity 12 and preventing backflow.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-backflow arterial puncture catheter, comprising catheter one (2), characterized in that: A fixing component is provided on the outside of the first conduit (2), a connecting seat (1) is fixedly connected to one end of the first conduit (2), and an anti-backflow component is fixedly connected to the other end of the first conduit (2); The countercurrent assembly includes a fixed tube (4), which is fixedly connected to one side of the first conduit (2). The fixed tube (4) has a cavity (11) inside and a cavity (12) inside. A connecting block (5) is fixedly connected to the inner wall of the fixed tube (4). An input hole (6) is opened inside the connecting block (5). A circular plate (7) is slidably connected to the inner wall of the cavity (12). A second conduit (9) is fixedly connected to the outer side of the fixed tube (4). A syringe (8) is provided on the outer side of the second conduit (9).

2. The anti-backflow arterial puncture catheter according to claim 1, characterized in that: The fixing component includes a fixing strap (3), the inner side of which is disposed on the outer side of the first conduit (2), and a plurality of fixing blocks (10) are fixedly connected inside the fixing strap (3). A Velcro closure (13) is fixedly connected to one side of the fixing strap (3), and a Velcro closure (14) is fixedly connected to the other side of the fixing strap (3).

3. The anti-backflow arterial puncture catheter according to claim 1, characterized in that: The outer side of the circular plate (7) is slidably connected to the inside of the cavity (11).

4. The anti-backflow arterial puncture catheter according to claim 2, characterized in that: The fixing block (10) is snapped onto the outside of the conduit (2).

5. The anti-backflow arterial puncture catheter according to claim 2, characterized in that: The Velcro mother (13) and the Velcro daughter (14) are bonded together.

6. The anti-backflow arterial puncture catheter according to claim 2, characterized in that: The fixing tube (4) is cylindrical.

7. The anti-backflow arterial puncture catheter according to claim 1, characterized in that: The cavity 2 (12) is a cylindrical cavity.

8. The anti-backflow arterial puncture catheter according to claim 1, characterized in that: The circular plate (7) is disposed on top of the connecting block (5).

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