Disposable sampling tube

Abstract

The utility model discloses a disposable sampling tube, it includes: the pipe body, the pipe body inside has the pipe cavity of upward open mouth, the top inside surface of pipe cavity is provided with the convex ring, the pipe cover structure, the pipe cover structure includes the cover main part, cylinder portion and cone portion, the inboard of cover main part is provided with cylinder portion, the bottom of cylinder portion is provided with cone portion, the cover main part is used for thread cooperation and is installed in the top of pipe body, cylinder portion can be inserted in the inboard of convex ring and with the inboard surface of convex ring abuts and seals. As above, the sample in the pipe cavity is basically only infected on the surface of the cone portion of the pipe cover structure, and the sample infected on the surface of the cone portion can also drop back to the pipe cavity relatively fast, thereby can reduce the sample infected on the pipe cover structure, reduce the reduction amount of the sample in the pipe body after opening, ensure that enough sample can be taken out from the pipe body, and the sample infected on the pipe cover structure after opening is not easy to cause drop pollution.

Description

Technical Field

[0001] This utility model relates to the field of sample collection equipment technology, and in particular to disposable sampling tubes. Background Technology

[0002] In fields such as medical testing and biological research, disposable sampling tubes are commonly used sample collection tools. They provide space for the sample and prevent contamination from contact with the external environment during transportation. However, some existing sampling tubes have problems in practical use. For example, when shaking to mix the sample, the liquid inside the tube can easily splash upwards and contaminate the cap structure. The part of the cap structure that contacts the inner cavity of the tube is usually designed to be flat. Even when the sampling tube is placed vertically, the sample contaminated on the cap structure is difficult to flow back into the tube body. This results in a reduced sample volume after opening the cap, making it difficult to remove a sufficient amount of sample from the tube when the sample size is small.

[0003] In addition, when the sampling tube is opened, the cap structure usually moves vertically away from the tube body. If the cap structure is contaminated with a lot of sample, the sample may drip from the cap structure when it leaves the tube body (if the cap is opened manually, the sample dripping will increase due to factors such as hand shaking). This can lead to sample leakage, contamination of the operating environment, and even affect the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a disposable sampling tube that can reduce the amount of sample contaminating the tube cap structure and reduce the amount of sample loss inside the tube after opening the cap.

[0005] To achieve the above objectives, a disposable sampling tube is provided, comprising: a tube body having an upwardly open cavity inside the tube body, and a raised ring provided on the top inner surface of the cavity; a tube cap structure, the tube cap structure comprising a cap body, a cylindrical portion and a conical portion, the cylindrical portion being provided on the inner side of the cap body, and the conical portion being provided at the bottom of the cylindrical portion; the cap body is threadedly fitted onto the top of the tube body, and the cylindrical portion is capable of being inserted into the inner side of the raised ring and abutting against the inner surface of the raised ring for sealing.

[0006] According to the disposable sampling tube, the bottom edge of the cylindrical part is flush with the bottom surface of the convex ring.

[0007] According to the disposable sampling tube, a rubber gasket is provided on the inner side of the cover body, and the rubber gasket abuts against the top surface of the tube body.

[0008] According to the disposable sampling tube, the cylindrical part and the cover body are integrally formed.

[0009] According to the disposable sampling tube, the rubber gasket, cylindrical part and conical part are integrally formed.

[0010] According to the disposable sampling tube, the top surface of the cover body is provided with a first mounting port, and the cylindrical part extends upward and is inserted into the first mounting port.

[0011] According to the disposable sampling tube, a mounting plate is provided at the top of the convex ring inside the tube cavity. The mounting plate has an operating port and a slit annular groove, and the slit annular groove is located directly above the inner side of the convex ring. A second mounting port is provided on the top surface of the cover body. The cylindrical part is inserted into the second mounting port, and the conical part is sealed and inserted into the operating port. A rubber sleeve cover is provided outside the cylindrical part. The top of the rubber sleeve cover is connected to the top surface of the cylindrical part, and the bottom of the side wall of the rubber sleeve cover is connected to the top of the cover body.

[0012] According to the disposable sampling tube, a limit ring is provided at the top of the cylindrical part.

[0013] According to the disposable sampling tube, the cross-section of the side wall of the rubber sleeve cover is an outwardly convex arc shape.

[0014] According to the disposable sampling tube, the thickness of the protruding ring extending from the inner surface of the tube cavity is 1-3 mm.

[0015] Beneficial effects: The contact between the convex ring and the cylindrical part forms a seal, which acts as an isolation to prevent liquid samples in the tube from contaminating the part of the cap structure above the convex ring. When samples do contaminate the conical part, they will flow downwards quickly and converge at the spike of the conical part, then drip back into the tube. As such, the samples in the tube are basically only contaminated on the surface of the conical part of the cap structure, and the samples contaminated on the surface of the conical part can also drip back into the tube quickly, thereby reducing the amount of sample contaminated on the cap structure, reducing the amount of sample lost in the tube after opening the cap, and ensuring that a sufficient amount of sample can be taken out from the tube.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 A cross-sectional view of a first embodiment of a disposable sampling tube; Figure 2 A cross-sectional view of a second embodiment of a disposable sampling tube; Figure 3 A cross-sectional view of the third embodiment of the disposable sampling tube; Figure 4 A cross-sectional view of the fourth embodiment of the disposable sampling tube; Figure 5 This is a cross-sectional view of another state of the fourth embodiment of the single-use sampling tube. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 The first embodiment of this utility model provides a disposable sampling tube, which includes a tube body 10 and a cap structure 20. The tube body 10 has an upward-opening cavity 11, with a raised ring 12 on the inner surface of the top of the cavity 11 and external threads on the outer surface of the top of the tube body 10. The cap structure 20 includes a cap body 21, a cylindrical portion 22, and a conical portion 23. The cap body 21 has internal threads on its inner side and is threadedly fitted onto the top of the tube body 10. The cylindrical portion 22 is located inside the cap body 21 and is inserted into and abuts against the inner surface of the raised ring 12. The bottom of the cylindrical portion 22 has a conical portion 23. The bottom edge of the cylindrical portion 22 is flush with the bottom surface of the raised ring 12.

[0023] In the above structure, the contact fit between the convex ring 12 and the cylindrical portion 22 forms a seal, which serves as an isolation mechanism to prevent liquid samples in the cavity 11 from contaminating the portion of the cap structure 20 above the convex ring 12. When samples do contaminate the conical portion 23, the samples will flow downwards quickly and converge at the tip of the conical portion 23, then drip back into the cavity 11. As such, the samples in the cavity 11 are basically only contaminated on the surface of the conical portion 23 of the cap structure 20, and the samples contaminated on the surface of the conical portion 23 can also drip back into the cavity 11 quickly. This reduces the amount of sample contaminated on the cap structure 20, minimizes the amount of sample lost from the tube body 10 after opening the cap, ensures that a sufficient amount of sample can be taken out from the tube body 10, and prevents the sample contaminated on the cap structure 20 from dripping and contaminating it after opening the cap.

[0024] In this embodiment, the thickness of the protruding ring 12 protruding from the inner surface of the cavity 11 is 1-3 mm.

[0025] In this embodiment, the conical portion 23, the cylindrical portion 22, and the cover body 21 are integrally formed structures, which can be injection molded in one step; and the conical portion 23 and the cylindrical portion 22 are hollow structures with open tops, so as to reduce the wall thickness of the conical portion 23 and the cylindrical portion 22, reduce injection cooling shrinkage, and improve the dimensional accuracy of the cylindrical portion 22.

[0026] In this embodiment, an adhesive gasket 30 is provided on the inner side of the cap body 21, and the adhesive gasket 30 abuts against the top surface of the tube body 10. The adhesive gasket 30 can form another seal, increasing the sealing redundancy and further preventing the sample from leaking into the external environment.

[0027] Reference Figure 2 In the second embodiment of this utility model, the cylindrical part 22 and the conical part 23 are both made of the same material as the rubber gasket 30, and the three are integrally formed; in addition, the cylindrical part 22 and the conical part 23 are both concealed inside the cover body 21.

[0028] Reference Figure 3 In the third embodiment of this utility model, both the cylindrical portion 22 and the conical portion 23 are made of the same material as the rubber gasket 30, and the three are integrally formed. Furthermore, a first mounting opening 211 is provided on the top surface of the cap body 21, and the cylindrical portion 22 extends upward and is inserted into the first mounting opening 211. In this structure, the cylindrical portion 22 is exposed outside the cap body 21, allowing the needle to be inserted directly through the cylindrical portion 22 and the conical portion 23 into the cavity 11 during sampling, thus enabling sample acquisition without opening the cap.

[0029] In this embodiment, an aluminum shell cover (not shown in the figure) may also be provided on the top of the cover body 21 to support the cylindrical part 22 structure and to shield the cylindrical part 22 from exposure to the external environment. During sampling, the needle pierces through the aluminum shell cover.

[0030] Reference Figure 4 In the fourth embodiment of this utility model, the cylindrical part 22, the cover body 21, and the rubber gasket 30 are three separate molding structures; an mounting plate 40 is fixedly installed inside the cavity 11, the mounting plate 40 is located on the top of the convex ring 12, and the mounting plate 40 has an operation port 41 and a cutting ring groove 42, the cutting ring groove 42 is located directly above the inner side of the convex ring 12; a second mounting port 212 is opened on the top surface of the cover body 21, the cylindrical part 22 is inserted into the second mounting port 212, and the conical part 23 is sealed and inserted into the operation port 41; a rubber sleeve cover 50 is provided outside the cylindrical part 22, the top of the rubber sleeve cover 50 is connected to the top surface of the cylindrical part 22, and the bottom of the side wall of the rubber sleeve cover 50 is connected to the top of the cover body 21.

[0031] When collecting samples using a swab, liquid is pre-filled in the lumen 11. After sampling, the swab needs to be broken off, leaving the sampling head inside the lumen 11. Before sampling, the cone portion 23 is sealed and inserted into the operating port 41. The cone portion 23 contacts the inner wall of the operating port 41 to form a seal, preventing liquid from flowing upward through the mounting plate 40 and contaminating other areas. During sampling: Remove the tube cap structure 20, pass the swab sampling head through the operating port 41, and then break off the swab's shaft along the edge of the operating port 41. The sampling head falls into the tube cavity 11 (during this process, because the operating port 41 is small, it can reduce the upward leakage of liquid and aerosol in the tube cavity 11); screw the tube cap structure 20 back on the tube body 10, press the cylindrical part 22, and the conical part 23 squeezes the mounting plate 40 so that a part of the mounting plate 40 falls off along the cut annular groove 42 (the inner diameter of the part of the mounting plate 40 remaining at the top of the convex ring 12 is the same as the inner diameter of the convex ring 12). The part that falls off falls into the bottom of the tube cavity 11, and the cylindrical part 22 can continue to move down to the position where it contacts the inner wall of the convex ring 12 (its state is as described above). Figure 5 (As shown). After the sampling operation is completed, the cylindrical part 22 contacts the convex ring 12 to form a seal; the rubber gasket 30 and the rubber sleeve cover 50 form another seal.

[0032] In this embodiment, a limiting ring 221 is provided at the top of the cylindrical portion 22. When the cylindrical portion 22 is pressed, the limiting ring 221 contacts the top surface of the cover body 21 to restrict the formation of the cylindrical portion 22. At this time, the bottom edge of the cylindrical portion 22 is flush with the bottom surface of the convex ring 12.

[0033] In this embodiment, the side wall of the rubber sleeve cover 50 has an outwardly convex arc shape. When the cylindrical part 22 is pressed, the side wall of the rubber sleeve cover 50 can deform outward to prevent it from deforming inward and getting stuck between the bottom surface of the limiting ring 221 and the top surface of the cover body 21, thereby pressing the cylindrical part 22 down into place.

[0034] The cylindrical part 22 is tightly fitted with the inner side of the second mounting port 212 and the inner side of the convex ring 12. The outer diameter of the cylindrical part 22 is 0.05-0.25mm larger than the inner diameter of the second mounting port 212 and the inner diameter of the convex ring 12 to improve the stability of the cylindrical part 22 when inserted into the second mounting port 212 and the convex ring 12, and to improve the sealing performance.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A disposable sampling tube, characterized in that, include: The tube body (10) has an upward-opening cavity (11) inside, and a protruding ring (12) is provided on the top inner surface of the cavity (11). The pipe cover structure (20) includes a cover body (21), a cylindrical part (22) and a conical part (23). The cylindrical part (22) is provided on the inner side of the cover body (21), and the conical part (23) is provided at the bottom of the cylindrical part (22). The cover body (21) is threadedly fitted onto the top of the tube body (10), and the cylindrical part (22) can be inserted into the inner side of the convex ring (12) and abut against the inner side of the convex ring (12) for sealing.

2. The disposable sampling tube according to claim 1, characterized in that, The bottom edge of the cylindrical part (22) is flush with the bottom surface of the convex ring (12).

3. The disposable sampling tube according to claim 1, characterized in that, A rubber gasket (30) is provided on the inner side of the cover body (21), and the rubber gasket (30) abuts against the top surface of the tube body (10).

4. The disposable sampling tube according to claim 3, characterized in that, The cylindrical part (22) and the cover body (21) are integrally formed.

5. The disposable sampling tube according to claim 3, characterized in that, The rubber gasket (30), cylindrical part (22) and conical part (23) are integrally formed structures.

6. The disposable sampling tube according to claim 5, characterized in that, The top surface of the cover body (21) is provided with a first mounting port (211), and the cylindrical part (22) extends upward and is inserted into the first mounting port (211).

7. The disposable sampling tube according to claim 1, characterized in that, An installation plate (40) is provided at the top of the convex ring (12) inside the cavity (11). An operation port (41) and a cutting ring groove (42) are provided on the installation plate (40). The cutting ring groove (42) is located directly above the inner side of the convex ring (12). The top surface of the cover body (21) is provided with a second mounting port (212), the cylindrical part (22) is inserted into the second mounting port (212), and the conical part (23) is sealed and inserted into the operating port (41); A rubber sleeve cover (50) is provided outside the cylindrical part (22). The top of the rubber sleeve cover (50) is connected to the top surface of the cylindrical part (22), and the bottom of the side wall of the rubber sleeve cover (50) is connected to the top of the cover body (21).

8. The disposable sampling tube according to claim 7, characterized in that, A limit ring (221) is provided at the top of the cylindrical part (22).

9. The disposable sampling tube according to claim 7, characterized in that, The side wall of the rubber sleeve cover (50) has an outwardly convex arc shape.

10. The disposable sampling tube according to any one of claims 1 to 9, characterized in that, The thickness of the protruding ring (12) protruding from the inner surface of the lumen (11) is 1-3 mm.

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