Test tube with accidental opening prevention

Abstract

The utility model relates to test tube technical field, concretely relates to a test tube of preventing accidental opening, it includes the pipe body, is established in the connecting ring of pipe body top and the upper cover of activity buckling in the connecting ring top, the top side of connecting ring is hinged with the upper cover, and the other side of its top is provided with multistage clamping groove part, the side of upper cover and multistage clamping groove part corresponds is provided with the clamping convex of multistage clamping groove part adaptation, is used for preventing the accidental opening of upper cover because of loosening. The utility model solves the technical problem that the upper cover of existing test tube is easy to appear loosening, sealing failure under the scene of existing external disturbance such as transportation, shift, satisfies the core demand of medical treatment, scientific research field to test tube sealing reliability.

Description

Technical Field

[0001] This utility model relates to the field of test tube technology, and more specifically, to a test tube designed to prevent accidental opening. Background Technology

[0002] In fields such as medical testing, biological research, and chemical experiments, flip-top snap-lock test tubes are widely used due to their convenient operation (quick opening / closing with one hand) and the fact that the cap does not need to be completely disassembled (avoiding cap loss). For example, in scenarios such as nucleic acid sampling, preliminary storage of clinical blood samples, and laboratory reagent dispensing, they can significantly improve sample / reagent processing efficiency and reduce operational complexity.

[0003] The core structure of existing flip-top snap-lock test tubes typically includes the test tube body, a connecting ring, and a top cap. The connecting ring, as an intermediate connector, is fixedly connected to the test tube body via an interference fit, achieving stable assembly. The top cap is hinged to the connecting ring via a hinge strip, allowing it to flip around the hinge strip. The inner wall of the top cap has a ring-shaped locking protrusion, and the outer wall of the top of the connecting ring has a corresponding ring-shaped locking groove that matches the locking protrusion. When sealing the test tube is required, the top cap is pressed towards the connecting ring, causing the locking protrusion on the inner wall of the top cap to engage with the locking groove of the connecting ring. Through the one-way interlocking action of the locking protrusion and the locking groove, the top cap and connecting ring are fixed together, and then, in conjunction with the sealing element inside the cap (such as a rubber stopper), the test tube is sealed.

[0004] However, the existing "single-ring groove + single-ring protrusion" fastening structure has obvious technical shortcomings and is difficult to meet the sealing reliability requirements of test tubes during transportation and transfer.

[0005] Because the locking protrusion and the locking groove are engaged only through a single annular contact, the engagement area is small and the engagement constraint is limited, allowing them to withstand only minor external disturbances. In practical applications, test tubes often undergo transportation (e.g., medical samples being transported from the sampling point to the testing laboratory) and transfer (e.g., research samples being transferred between different workstations in the laboratory). During these processes, vibrations, bumps, or accidental collisions are unavoidable. Such external forces can easily subject the top cover to axial or radial impacts, causing the locking protrusion on the inner wall of the top cover to detach from the locking groove of the connecting ring, thus resulting in the failure of the engagement between the top cover and the connecting ring.

[0006] Failure of the fastener directly leads to a decline or even complete failure of the test tube's sealing performance: On the one hand, the samples (such as blood, cell suspensions) or reagents (such as volatile solvents, corrosive liquids) inside the test tube may leak, causing sample loss, reagent waste, or even safety hazards due to the leakage of corrosive reagents; on the other hand, external air, dust, or microorganisms can easily enter the test tube, leading to sample contamination (such as nucleic acid sample contamination affecting detection accuracy, and cell sample contamination leading to culture failure), seriously affecting the reliability of experimental or detection results.

[0007] Furthermore, the shortcomings of this single-loop fastening structure indirectly increase the user's operating costs and operational risks: to avoid seal failure during transportation and transfer, users need to use additional sealing measures such as wrapping tape and adding protective sleeves, which not only increases the operation steps and consumable costs, but may also affect subsequent sample retrieval due to improper auxiliary measures (such as tape sticking to the sample tube opening); if no auxiliary measures are taken, once seal failure occurs, it is necessary to collect samples or prepare reagents again, further extending the experimental testing cycle and reducing work efficiency.

[0008] In summary, the existing flip-top snap-lock sealing cap's "single-ring groove-single-ring protrusion" connection method is prone to problems such as cap loosening and seal failure in scenarios involving external disturbances such as transportation and transfer due to insufficient locking force. It cannot meet the core requirements of medical and scientific research fields for the reliability of test tube sealing. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a test tube that is resistant to accidental opening, so as to solve the technical problem that the top cover is prone to loosening and the seal fails in scenarios where external forces disturb the existing test tubes during transportation and transfer.

[0010] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0011] A test tube designed to prevent accidental opening includes a tube body, a connecting ring located at the top of the tube body, and a top cover that is movably fastened to the top of the connecting ring. One side of the top of the connecting ring is hinged to the top cover, and the other side of the top of the connecting ring has a multi-level slot. The top cover has a latching protrusion on the side corresponding to the multi-level slot to prevent the top cover from being accidentally opened due to loosening.

[0012] Preferably, a rubber sealing plug is tightly nested inside the top cover to allow for easy insertion into the top opening of the tube, thereby preventing reagent leakage.

[0013] Preferably, the rubber sealing plug includes an insertion block for being movably inserted into the tube body to achieve a primary seal, a sealing gasket on the top of the insertion block for being movably pressed against the upper end face of the tube body to achieve a secondary seal, and a connecting block on the top of the sealing gasket for being embedded in the upper cover.

[0014] Preferably, the multi-level card slot section includes three card slots arranged from top to bottom, and the card protrusion can be movably engaged into any of the card slots.

[0015] Preferably, the top of the cover is provided with an arc-shaped opening that facilitates the user to open the cover, and the surface of the arc-shaped opening that contacts the thumb is provided with alternating anti-slip textures.

[0016] Preferably, the material of the tube body is selected from any one of medical-grade PE, PP, PC, PS, PET, PVC, PEEK, ABS, and PTFE.

[0017] Preferably, the connecting ring is fixedly sleeved and snapped onto the top of the pipe body, or threadedly connected to the top of the pipe body.

[0018] In summary, this utility model has the following beneficial effects: By adding a multi-level slot to the side of the connecting ring opposite to its hinge side, and adding a matching protrusion to the side of the top cover corresponding to the multi-level slot, a snap-fit ​​design is added to the "single-ring slot-single-ring protrusion" design, significantly improving the snap-fit ​​stability and resistance to external disturbances between the top cover and the connecting ring, effectively preventing the top cover from accidentally detaching from the connecting ring during use and circulation; it can reliably ensure the sealing performance of the test tube, prevent leakage of samples / reagents or intrusion of external contaminants, and ensure the quality of samples / reagents and the accuracy of experimental test results, without the need for additional sealing measures such as tape wrapping or protective sleeves, reducing operation steps and consumable costs, and lowering the risk of use. It is suitable for various scenarios such as medical sampling and scientific research storage, taking into account both practicality and reliability, and has high application value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 yes Figure 2 A magnified view of region A in the middle.

[0022] Figure 4 This is a connection diagram of the top cover and the connecting ring in this embodiment.

[0023] In the diagram: 1. Tube body; 2. Connecting ring; 21. Multi-stage slot section; 221. Slot; 22. Single-loop slot; 23. Cover retaining ring; 231. Second notch; 3. Top cover; 31. Snap protrusion; 32. Arc-shaped top opening; 33. Single-loop snap protrusion; 331. First notch; 4. Rubber sealing plug; 41. Insertion block; 42. Sealing gasket; 43. Connecting block; 5. Hinge strip. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] This invention provides a test tube designed to prevent accidental opening, such as... Figure 1-3 As shown, it includes a tube body 1, a connecting ring 2 located on the top of the tube body 1, and an upper cover 3 that is movably fastened to the top of the connecting ring 2; one side of the top of the connecting ring 2 is hinged to the upper cover 3, and the other side of its top has a multi-level slot 21; the upper cover 3 has a latching protrusion 31 on the side corresponding to the multi-level slot 21, which is adapted to the multi-level slot 21 to prevent the upper cover 3 from being accidentally opened due to loosening.

[0027] Specifically, the core structure of the test tube includes a tube body 1, a connecting ring 2, and a top cover 3. The tube body 1 is made of medical-grade polypropylene (PP) material, which has both good chemical stability and high temperature resistance, meeting the material safety requirements of medical and scientific research scenarios. In other embodiments, any one of polyethylene (PE), polycarbonate (PC), polystyrene (PS), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyetheretherketone (PEEK), acrylonitrile-butadiene-styrene copolymer (ABS), and polytetrafluoroethylene (PTFE) can also be used. The connecting ring 2 is fixed to the top of the tube body 1 by existing interference fit or threaded connection, and is connected to the top cover 3 by a hinge strip 5. In practical applications, the connecting ring 2, hinge strip 5, and top cover 3 are made by an integral injection molding process, and the three together form a flip-top snap-on sealing cover. The lower part of the inner wall of the top cover 3 protrudes inward to form a single-ring snap 33. The single-ring snap 33 is located on one side of the hinge strip 5 and has a first notch 331 with a width greater than that of the hinge strip 5 (e.g., Figure 4 As shown in the diagram; the upper part of the outer wall of the connecting ring 2 is concave to form a single-ring groove 22, and a cover ring 23 is formed above the single-ring groove 22. The cover ring 23 is located on one side of the hinge strip 5 and has a second notch 231 with a width slightly larger than that of the hinge strip 5 (as shown in the diagram). Figure 4 As shown in the diagram; the first notch 331 and the second notch 231 facilitate the upper cover 3 to be fastened onto the connecting ring 2. When it is necessary to seal the test tube, press the upper cover 3 toward the connecting ring 2, so that the single-ring locking protrusion 33 is embedded into the single-ring locking groove 22 (the single-ring locking protrusion 33 locks the cover locking ring 23). Through the fastening action of the single-ring locking protrusion 33 and the single-ring locking groove 22, the upper cover 3 and the connecting ring 2 are fixed, and then the rubber sealing soft plug 4 inside the upper cover 3 completes the sealing of the test tube.

[0028] On the side of the connecting ring 2 opposite to the hinge strip 5, a multi-level slot section 21 is formed. The multi-level slot section 21 consists of three slots 211, with a protrusion between adjacent slots 211. The protrusion 31 is engaged with any one of the slots 211 and then locks the protrusion in place. On the same side as the multi-level slot section 21, the top cover 3 is integrally formed with a protrusion 31. The protrusion 31 is bent inward into an arc shape and has elastic recovery capability (for automatic engagement with the multi-level slot section 21). Its arc length in the width direction is approximately 5-8 mm (taking a 20 ml test tube as an example), which translates to 0.05-0.06 turns. The lower the slot 211 the protrusion 31 is engaged with, the stronger its ability to prevent the top cover 3 from loosening, and the better it prevents the top cover 3 from being accidentally opened.

[0029] The design of the newly added locking protrusion 31 and multi-level locking groove 21 significantly improves the fastening stability and resistance to external disturbances of the upper cover 3 and the connecting ring 2, based on the single-ring locking groove 22 and the single-ring locking protrusion 33. It effectively prevents the upper cover 3 from accidentally detaching from the connecting ring 2 during use and circulation. It can reliably ensure the sealing performance of the test tube, prevent leakage of samples / reagents or intrusion of external contaminants, and ensure the quality of samples / reagents and the accuracy of experimental test results. It also eliminates the need for additional sealing measures such as tape wrapping and protective sleeves, reducing operation steps and consumable costs, and lowering the risk of use. It is suitable for various scenarios such as medical sampling and scientific research storage, and combines practicality and reliability, thus having high application value.

[0030] Furthermore, a rubber sealing plug 4 is tightly nested inside the top cover 3, which is used to insert into the top opening of the tube body 1 to prevent reagent leakage. Here, the reagent refers to the test reagent used in the laboratory, or it can be the sample to be tested in clinical trials.

[0031] Furthermore, such as Figure 2 As shown, the rubber sealing plug 4 includes an insertion block 41 for movable insertion into the tube body 1 to achieve a primary seal. The top of the insertion block 41 is provided with a sealing gasket 42 for movable contact with the upper surface of the tube body 1 to achieve a secondary seal. The top of the sealing gasket 42 is provided with a connecting block 43 for embedding into the upper cover 3. The insertion block 41, sealing gasket 42, and connecting block 43 are integrally formed, ensuring the double seal of the rubber sealing plug 4.

[0032] Furthermore, the top of the cover 3 is provided with an arc-shaped opening 32 that facilitates the user to open the cover 3, and the surface of the arc-shaped opening 32 that contacts the thumb is provided with alternating anti-slip textures.

[0033] like Figure 1-2 As shown, the top of the cover 3 is set in an arc shape and has an arc-shaped opening part 32 that makes it easy to open the cover 3 from the connecting ring 2 with the thumb. The surface of the arc-shaped opening part 32 that contacts the thumb is provided with alternating anti-slip textures.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A test tube designed to prevent accidental opening, characterized in that: It includes a tube body, a connecting ring located at the top of the tube body, and a top cover that is movably fastened to the top of the connecting ring; one side of the top of the connecting ring is hinged to the top cover, and the other side of its top has a multi-level slot; the top cover has a latching protrusion on the side corresponding to the multi-level slot to prevent the top cover from being accidentally opened due to loosening.

2. The test tube according to claim 1, characterized in that: The top cap has a tightly nested rubber sealing plug inside, which is used to insert into the top opening of the tube body to prevent reagent leakage.

3. The test tube according to claim 2, characterized in that: The rubber sealing plug includes an insertion block for being inserted into the tube body to achieve a primary seal, a sealing gasket on the top of the insertion block for being pressed against the upper end face of the tube body to achieve a secondary seal, and a connecting block on the top of the sealing gasket for being embedded in the upper cover.

4. The test tube according to claim 1, characterized in that: The multi-level card slot section includes three card slots arranged from top to bottom, and the card protrusion can be moved into any of the card slots.

5. The test tube according to claim 1, characterized in that: The top of the cover has an arc-shaped opening that makes it easy for users to open the cover. The surface of the arc-shaped opening that contacts the thumb has alternating anti-slip textures.

6. The test tube according to claim 5, characterized in that: The tube body is made of any one of the following materials: medical grade PE, PP, PC, PS, PET, PVC, PEEK, ABS, and PTFE.

7. The test tube according to claim 6, characterized in that: The connecting ring is fixedly sleeved and snapped onto the top of the pipe body, or threadedly connected to the top of the pipe body.

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