Blood cell separation single sampling puncture needle

Abstract

The utility model provides a blood cell separation single sampling puncture needle, which relates to the technical field of medical instruments, and comprises a puncture needle main body, the puncture needle main body is provided with a needle head, one end of the needle head is connected with an extension tube, one end of the extension tube is fixedly connected with a connector, one side of the connector is fixedly connected with a limiting rod, and the limiting rod is fixedly connected with the needle head. The outer surface of the limiting rod is sleeved with a first spring, one end of the first spring is fixedly connected with an extrusion plate, a groove is formed in the inner wall of the connector, the inner wall of the groove is sleeved with a sliding rod, one side of the groove is fixedly connected with a second spring, and one end of the sliding rod is fixedly connected with an extrusion ball. According to the syringe needle fixing device, the limiting rod is in sliding connection with the squeezing plate, normal movement of the squeezing plate is guaranteed, the squeezing plate is driven to move through resetting of the first spring, and therefore the sliding rod is squeezed, the sliding rod is moved, the squeezing ball is driven to move through moving of the sliding rod, and therefore the syringe needle is fixed, and it is guaranteed that the syringe needle cannot fall off.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a blood cell separation and apheresis puncture needle. Background Technology

[0002] Apheresis is a technique for treating hematological diseases. It mainly uses a blood separator to remove abnormally elevated blood cell components from the patient's peripheral blood, thereby alleviating hyperviscosity syndrome and tissue hypoxia caused by abnormally high blood cell counts, reducing the risk of bleeding and thrombosis, and reducing the dosage and adverse reactions of chemotherapy drugs. It is a highly effective adjunctive treatment. The puncture needle is a device used to collect blood and reinfuse other components for treatment. Existing puncture needles do not have a fixed structure on the extension tube, but are only fixed with adhesive tape. However, during use, the extension tube may undergo non-axial displacement due to human traction and pulling. This displacement of the extension tube will not only cause the fixed adhesive tape to loosen at the edges. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing puncture needles, which lack a fixed structure on the extension tube and rely solely on adhesive tape for fixation. However, the extension tube may experience non-axial displacement due to human traction and pulling during use, leading to loosening of the adhesive tape. This invention provides a blood cell separation apheresis puncture needle.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a blood cell separation apheresis puncture needle, comprising a puncture needle body, the puncture needle body having a needle tip, one end of the needle tip being connected to an extension tube, one end of the extension tube being fixedly connected to a connector, one side of the connector being fixedly connected to a limiting rod, the outer surface of the limiting rod being sleeved with a first spring, one end of the first spring being fixedly connected to a compression plate, the inner wall of the connector being fixedly connected to a fixing plate, the inner wall of the connector having a groove, the inner wall of the groove being sleeved with a sliding rod, one side of the groove being fixedly connected to a second spring, and one end of the sliding rod being fixedly connected to a compression ball.

[0005] In a preferred embodiment, a fixing strap is fixedly connected to the outer surface of the connector, and Velcro is fixedly connected to the outer surface of the fixing strap.

[0006] In a preferred embodiment, the other end of the second spring is fixedly connected to the outer surface of the compression ball, and the outer surface of the slide rod is slidably connected to the inner wall of the groove.

[0007] In a preferred embodiment, one end of the slide bar is provided with an inclined surface.

[0008] In a preferred embodiment, the inner wall of the extrusion plate is slidably connected to the outer surface of the limiting rod.

[0009] In a preferred embodiment, one end of the first spring is fixedly connected to one side of the connector.

[0010] In a preferred embodiment, one end of the needle is engaged with the inner wall of the connector.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This invention ensures the normal operation of puncture by using a needle, ensures the normal operation of separation by using an extension tube, and uses a connector to connect the needle and the extension tube to achieve the purpose of blood cell separation. A limiting rod is slidably connected to the squeezing plate to ensure the normal movement of the squeezing plate. The reset of the first spring drives the squeezing plate to move, thereby squeezing the slide rod and moving it. The movement of the slide rod drives the squeezing ball to move, thereby fixing the needle and ensuring that it will not fall off. Attached Figure Description

[0013] Figure 1 A three-dimensional view of a blood cell separation apheresis needle provided for this utility model.

[0014] Figure 2 A three-dimensional view of the connector of a blood cell separation apheresis needle provided by this utility model.

[0015] Figure 3 A side view of the connector of a blood cell separation apheresis needle provided by this utility model.

[0016] Figure 4 A cross-sectional view of the connector of a blood cell separation apheresis needle provided by this utility model.

[0017] Legend:

[0018] 1. Puncture needle body; 2. Needle tip; 3. Extension tube; 4. Connector; 41. Fixing plate; 42. Groove; 5. Fixing strap; 6. Velcro; 7. Limiting rod; 8. First spring; 9. Squeezing plate; 10. Sliding rod; 11. Second spring; 12. Squeezing ball; 13. Angled surface. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] like Figures 1-3 As shown, this utility model provides a technical solution: a blood cell separation apheresis puncture needle, including a puncture needle body 1, a needle tip 2, an extension tube 3 connected to one end of the needle tip 2, a connector 4 fixedly connected to one end of the extension tube 3, a limit rod 7 fixedly connected to one side of the connector 4, a first spring 8 sleeved on the outer surface of the limit rod 7, and a compression plate 9 fixedly connected to one end of the first spring 8.

[0022] In this embodiment, a needle 2 is used to perform puncture on the patient's arm, an extension tube 3 is used to ensure the normal operation of blood cell separation, a connector 4 is used to fix the needle 2 to prevent it from falling off when the staff pulls the extension tube 3, a limiting rod 7 is used to prevent the first spring 8 from twisting or deforming, and the first spring 8 is used to drive the compression plate 9 to move. Since the compression plate 9 is slidably connected to the limiting rod 7, the compression plate 9 can move normally and will not fall off.

[0023] Example 2

[0024] like Figures 1-4 As shown, a fixing plate 41 is fixedly connected to the inner wall of the connector 4, a groove 42 is provided on the inner wall of the connector 4, a slide rod 10 is sleeved on the inner wall of the groove 42, one end of the slide rod 10 is provided with an inclined surface 13, a second spring 11 is fixedly connected to one side of the groove 42, a compression ball 12 is fixedly connected to one end of the slide rod 10, a fixing strap 5 is fixedly connected to the outer surface of the connector 4, and a Velcro 6 is fixedly connected to the outer surface of the fixing strap 5.

[0025] In this embodiment, a fixing plate 41 is provided to fit one end of the needle 2 to ensure the normal operation of the extrusion work. A groove 42 is provided to provide a good working environment for other components. A slide rod 10 is provided to drive the extrusion ball 12 to move. The movement of the extrusion ball 12 clamps and fixes the needle 2 to prevent it from falling off. An inclined surface 13 is provided at one end of the slide rod 10 to facilitate the extrusion plate 9 to extrude the slide rod 10. A fixing strap 5 is provided to fix the connector 4 to prevent it from moving. A Velcro strap 6 is provided to connect the fixing strap 5.

[0026] Working principle:

[0027] like Figures 1-4 As shown, when the staff uses the puncture needle body 1 to perform puncture, the staff first connects the extension tube 3 to the needle 2. Since the limiting rod 7 is slidably connected to the squeezing plate 9, the first spring 8 is compressed by moving the squeezing plate 9. Then, the staff attaches one end of the needle 2 to the fixing plate 41. Then, the squeezing plate 9 is moved by the reset of the first spring 8, thereby resetting the squeezing plate 9. Since one end of the sliding rod 10 has an inclined surface 13, it is convenient for the squeezing plate 9 to squeeze the sliding rod 10. During squeezing, the sliding rod 10 will slide inside the groove 42. The movement of the sliding rod 10 drives the squeezing ball 12 to move, thereby clamping and fixing the needle 2 to ensure that it will not fall off. After the connection is completed, the fixing strap 5 is wrapped around the patient's arm, and then the fixing strap 5 is connected by the Velcro 6 to complete the fixing of the connector 4, ensuring that there is no displacement, thereby carrying out the blood cell separation work.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A blood cell separation apheresis puncture needle comprising a puncture needle body (1), characterized in that: The puncture needle body (1) is provided with a needle tip (2). One end of the needle tip (2) is connected to an extension tube (3). One end of the extension tube (3) is fixedly connected to a connector (4). One side of the connector (4) is fixedly connected to a limiting rod (7). The outer surface of the limiting rod (7) is sleeved with a first spring (8). One end of the first spring (8) is fixedly connected to a compression plate (9). The inner wall of the connector (4) is fixedly connected to a fixing plate (41). The inner wall of the connector (4) is provided with a groove (42). The inner wall of the groove (42) is sleeved with a sliding rod (10). One side of the groove (42) is fixedly connected to a second spring (11). One end of the sliding rod (10) is fixedly connected to a compression ball (12).

2. The blood cell separation apheresis puncture needle according to claim 1, characterized in that: The outer surface of the connector (4) is fixedly connected to a fixing strap (5), and the outer surface of the fixing strap (5) is fixedly connected to a Velcro strap (6).

3. The blood cell separation apheresis puncture needle according to claim 1, characterized in that: The other end of the second spring (11) is fixedly connected to the outer surface of the extrusion ball (12), and the outer surface of the slide rod (10) is slidably connected to the inner wall of the groove (42).

4. The blood cell separation apheresis puncture needle of claim 1, wherein: One end of the slide bar (10) is provided with an inclined surface (13).

5. The blood cell separation apheresis puncture needle of claim 1, wherein: The inner wall of the extrusion plate (9) is slidably connected to the outer surface of the limiting rod (7).

6. The blood cell separation apheresis puncture needle of claim 1, wherein: One end of the first spring (8) is fixedly connected to one side of the connector (4).

7. The blood cell separation apheresis puncture needle of claim 1, wherein: One end of the needle (2) is engaged with the inner wall of the connector (4).

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