Plastic needle pipette with tip band mounting structure

Abstract

This utility model discloses a plastic needle straw with a mounting structure at the top, including a straw body, a needle body, and a mounting structure. The mounting structure includes a first fixing cylinder and a second fixing cylinder, which are detachably connected to the straw body and the second fixing cylinder and the needle body. It also includes a connector body disposed on the outside of the first and second fixing cylinders, a first external thread disposed on the outer wall of the first fixing cylinder, and a second external thread disposed on the outer wall of the second fixing cylinder. Furthermore, it includes a first internal thread formed on the inner wall of the straw body, and the first internal thread and the first external thread are threadedly connected. One end of the connector body is tightly fitted to one end of the straw body, and the outer diameter of the needle body is smaller than the outer diameter of the connector body. The beneficial effect of this utility model is that the detachable mounting structure allows for the separation of the needle from the straw body. After use, the needle body can be removed and replaced without replacing the entire straw, reducing maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic needle straws, specifically relating to a plastic needle straw with an installation structure at the top. Background Technology

[0002] In many fields such as medical diagnostics, biological research, food testing, and industrial production, liquid transfer is a fundamental and high-frequency operation. Plastic needle pipettes, as the core consumables for this operation, directly affect the operational efficiency and operating costs of related industries due to their performance, usage costs, and environmental friendliness. In the existing technology, plastic needle pipettes generally adopt a design in which the needle and the main body of the pipette are integrally injection molded or fixedly connected by strong adhesive. When this integrated structure was initially designed, the main considerations were ease of operation and connection stability, so as to avoid problems such as needle detachment and liquid leakage during liquid transfer, in order to meet the basic requirements of operational precision and safety in medical, scientific research and other scenarios. However, with the large-scale development of related industries and the continuous improvement of operational safety requirements, the drawbacks of existing integrated plastic needle pipettes have become increasingly prominent. The primary problem is the high cost of consumables. Due to the extremely high hygiene standards required in medical and scientific research settings, in order to avoid the risk of cross-contamination, pipettes that have drawn blood from patients or have come into contact with biological samples must be disposed of as a whole after a single use. The integrated structure makes it impossible to separate the needle from the main body of the pipette. Even if the main body of the pipette itself is not damaged and the material is suitable for repeated sterilization, it must be discarded along with the needle. Utility Model Content

[0003] The purpose of this invention is to provide a plastic needle straw with a mounting structure at the top. Through the detachable structural design, the needle can be replaced separately and the straw body can be reused. This reduces consumable costs and environmental pollution while ensuring operational safety and accuracy.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plastic needle straw with an installation structure at the top, comprising a straw body, a needle body, and an installation structure, wherein the installation structure comprises a first fixing cylinder and a second fixing cylinder, the first fixing cylinder being detachably connected to the straw body, and the second fixing cylinder being detachably connected to the needle body.

[0005] Preferably, it further includes a connector body disposed on the outside of the first fixed cylinder and the second fixed cylinder, a first external thread disposed on the outer wall of the first fixed cylinder, and a second external thread disposed on the outer wall of the second fixed cylinder.

[0006] Preferably, it also includes a first internal thread formed on the inner wall of the straw body, and the first internal thread and the first external thread are threadedly connected.

[0007] Preferably, one end of the connector body and one end of the straw body are tightly fitted together, and the outer diameter of the needle body is smaller than the outer diameter of the connector body.

[0008] Preferably, it further includes a second internal thread formed on the inner wall of the needle body, and the second internal thread and the second external thread are threadedly connected.

[0009] Preferably, the straw body is provided with anti-slip texture and scale lines.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The needle and the main body of the straw are separated by a detachable mounting structure. After the needle body is used, it can be removed and replaced without replacing the entire straw, thus reducing maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the straw body structure of this utility model; Figure 3 This is a schematic diagram of the splicing structure of the connector body and the needle body of this utility model. Figure 4 This is a schematic diagram of the first and second fixed cylinders of this utility model; Figure 5 This is a schematic diagram of the needle body structure of this utility model; In the picture: 1. Straw body; 11. First internal thread; 2. Connector body; 3. Needle body; 31. Second internal thread; 4. First fixing cylinder; 41. First external thread; 5. Second fixing cylinder; 51. Second external thread. Detailed Implementation

[0012] 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.

[0013] Please see Figures 1 to 5This utility model provides a plastic needle straw with a mounting structure at the top, including a straw body 1, a needle body 3, and a mounting structure. The mounting structure includes a first fixing cylinder 4 and a second fixing cylinder 5. The first fixing cylinder 4 is detachably connected to the straw body 1, and the second fixing cylinder 5 is detachably connected to the needle body 3. This breaks the limitations of the traditional integrated structure. After the needle body 3 is used, it can be removed and replaced without replacing the entire straw, reducing maintenance costs. By splitting the mounting structure into the first fixing cylinder 4 and the second fixing cylinder 5, which are respectively connected to the straw body 1 and the needle body 3, the force on each component can be more evenly distributed, avoiding accelerated wear caused by a single mounting component bearing all the connection stress for a long time, and effectively extending the overall service life of the straw.

[0014] In this embodiment, a connector body 2 is also provided on the outside of the first fixed cylinder 4 and the second fixed cylinder 5, a first external thread 41 is provided on the outer wall of the first fixed cylinder 4, and a second external thread 51 is provided on the outer wall of the second fixed cylinder 5. The connector body 2 can further reinforce the relative position of the first fixed cylinder 4 and the second fixed cylinder 5, prevent the fixed cylinder from shifting due to vibration or external force collision during use, and improve the stability of the overall structure.

[0015] In this embodiment, a first internal thread 11 is also provided on the inner wall of the pipette body 1, and the first internal thread 11 and the first external thread 41 are threaded together to form a stable connection structure. Compared with connection methods such as snap-fit ​​and adhesive, the threaded connection has stronger pull-out resistance and can effectively prevent the pipette body 1 from separating from the first fixing cylinder 4 during use, ensuring the operational safety during liquid transfer and avoiding problems such as liquid spillage and sample contamination caused by connection detachment. The disassembly and assembly process of the threaded connection is simple. Separation can be completed by simply rotating the pipette body 1 or the first fixing cylinder 4 without the need for special tools. When the pipette body 1 needs to be sterilized, the first fixing cylinder 4 can be quickly removed to thoroughly clean the inner wall of the pipette body 1, avoiding cleaning dead corners caused by the complex connection structure, ensuring that the sterilization effect meets the standards and meets the strict hygiene requirements of medical and scientific research scenarios.

[0016] In this embodiment, one end of the connector body 2 and one end of the straw body 1 are tightly fitted together. The outer diameter of the needle body 3 is smaller than the outer diameter of the connector body 2. During the production and assembly process, technicians can quickly determine the installation position of each component through the size difference, avoid problems such as reverse installation or incorrect installation, and improve assembly efficiency.

[0017] In this embodiment, a second internal thread 31 is also provided on the inner wall of the needle body 3, and the second internal thread 31 and the second external thread 51 are threaded together to firmly fix the needle body 3 on the second fixing cylinder 5. During the liquid transfer process, the needle body 3 needs to withstand a certain puncture force. The high-strength fixation of the threaded connection can prevent the needle body 3 from loosening, tilting or even falling off, ensuring accurate puncture operation and avoiding sample extraction failure or waste of medicine due to needle displacement.

[0018] In this embodiment, the pipette body 1 is provided with anti-slip texture, which can increase the friction between the hand and the pipette body 1. Especially when the operator's hands are wet or wearing gloves, it can effectively prevent the pipette from slipping out of the hand, avoiding operational errors such as liquid spillage, sample contamination, and needle pricks caused by the pipette slipping. This improves the safety and stability of use, and is particularly suitable for the fast and accurate operation needs of medical staff in medical scenarios. In addition, the pipette body 1 is also provided with scale lines, which provide an intuitive measurement basis for the liquid transfer volume. The operator can accurately control the volume of liquid drawn or injected according to the scale lines, avoiding the deviation of the value caused by estimation.

[0019] The working principle and usage process of this invention: Hold the straw body 1, align the first external thread 41 of the first fixing cylinder 4 with the first internal thread 11 of the inner wall of the straw body 1, and rotate the first fixing cylinder 4 until the threads are tightly engaged. Take a new needle body 3, align the second internal thread 31 on its inner wall with the second external thread 51 of the second fixing cylinder 5, and slowly rotate the needle body 3 until the threads are tightly engaged; at this time, the needle body 3 and the second fixing cylinder 5 form a firm connection. You can gently shake the needle body 3 to check for any looseness, so as to avoid needle tilting during subsequent punctures.

[0020] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 plastic, tip-and-tape mounted, needle straw, characterized by: It includes a straw body (1), a needle body (3), and an installation structure. The installation structure includes a first fixing cylinder (4) and a second fixing cylinder (5). The first fixing cylinder (4) and the straw body (1) are detachably connected, and the second fixing cylinder (5) and the needle body (3) are detachably connected.

2. A plastic spike of the tip band mounting structure according to claim 1, characterized in that: It also includes a connector body (2) disposed on the outside of the first fixed cylinder (4) and the second fixed cylinder (5), a first external thread (41) disposed on the outer wall of the first fixed cylinder (4), and a second external thread (51) disposed on the outer wall of the second fixed cylinder (5).

3. A plastic spike of the tip band mounting structure according to claim 2, characterized in that: It also includes a first internal thread (11) formed on the inner wall of the straw body (1), and the first internal thread (11) and the first external thread (41) are threaded together.

4. A plastic needle straw with a mounting structure at the tip according to claim 2, characterized in that: One end of the connector body (2) and one end of the straw body (1) are closely fitted together, and the outer diameter of the needle body (3) is smaller than the outer diameter of the connector body (2).

5. A plastic spike of the tip band mounting structure according to claim 1, characterized in that: It also includes a second internal thread (31) formed on the inner wall of the needle body (3), and the second internal thread (31) and the second external thread (51) are threaded together.

6. A plastic spike of the tip band mounting structure according to claim 1, characterized in that: The straw body (1) is provided with anti-slip texture and scale lines.

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