PCR reaction tube

Abstract

The utility model belongs to the field of biological detection consumables, and particularly relates to a PCR (Polymerase Chain Reaction) tube, a support part is arranged on the outer wall of a tube body close to an opening, a bulge corresponding to the support part is arranged on a tube cover, the tube cover is equivalent to a lever in a cover opening process, the part, far away from the bulge, of the edge of the tube cover is upwards applied with force, and the part of the tube cover is tilted, so that the tube cover is prevented from being damaged. When the PCR reaction tube is opened, the protrusion at the other end of the tube cover is driven to abut against the supporting part on the tube body downwards, the supporting part on the tube body plays a role in limiting and supporting the protrusion, reliable supporting is provided for the protrusion, extrusion deformation caused by the fact that the end, away from force application, of the tube cover is pressed downwards and meshed with the opening of the tube body is avoided, and the uncovering difficulty of the PCR reaction tube is lowered; the possibility of breakage of the sealing plug is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of biological detection consumables, and in particular to a PCR reaction tube. Background Art

[0002] Molecular POCT (Point-of-Care Testing) refers to molecular diagnostic testing performed at the clinical site or near the patient, providing rapid and convenient results. Molecular POCT combines molecular detection technologies (such as PCR) with the concept of point-of-care testing and is commonly used for the rapid diagnosis of infectious diseases and genetic disorders. PCR reaction tubes are specialized tubes used in polymerase chain reaction (PCR) experiments.

[0003] After the sealing cover of the PCR reaction tube is tightened, force is applied to one side of the cover when opening it, causing the cover to move eccentrically around the center of the sealing plug. The side of the cover that abuts the opening of the reaction tube bites into the opening, causing extrusion deformation, making it difficult to open the cover or breaking the sealing plug. Utility Model Content

[0004] The embodiment of the present application provides a PCR reaction tube, which aims to reduce the difficulty of opening the lid of the PCR reaction tube and reduce the possibility of the sealing plug breaking.

[0005] To achieve the above objectives, the present application provides a PCR reaction tube, comprising:

[0006] A tube body having an opening at one end, and an outer wall of the tube body having a support portion disposed near the opening; and

[0007] The tube cover can be buckled on the opening. The tube cover is provided with a protrusion corresponding to the support portion. When force is applied to one side of the tube cover to open the tube cover, the protrusion and the support portion are abutted to provide support for the flipping of the tube cover.

[0008] Optionally, the support portion includes a flange arranged around the outer wall of the tube body.

[0009] Optionally, the protrusion is in the shape of an elongated strip, and one end of the protrusion that abuts against the supporting portion is provided with a rounded corner.

[0010] Optionally, the tube cover includes a cover body and a sealing plug disposed on the cover body, the protrusion is disposed on the cover body and close to the sealing plug, and the sealing plug can be inserted into the tube body through the opening.

[0011] Optionally, the cover body, the sealing plug and the protrusion are an integrated structure.

[0012] Optionally, the edge of the cover body has a force-applying portion, and the force-applying portion and the protrusion are respectively located on opposite sides of the sealing plug.

[0013] Optionally, the interior of the tube body has a detection chamber and a sample adding chamber connecting the detection chamber and the opening, the sample adding chamber includes a liquid injection section and a sealing section connected in sequence from the opening to the detection chamber, and the sealing plug can be moved from the liquid injection section to the sealing section under the drive of the cover body; the inner diameter of the liquid injection section is smaller than the outer diameter of the sealing plug and larger than the inner diameter of the sealing section.

[0014] Optionally, the inner wall of the opening has a snap-fit ​​portion, and the tube cover has a snap-fitting portion capable of snap-fitting with the snap-fitting portion.

[0015] Optionally, the PCR reaction tube further includes a bendable connector connected between the tube body and the tube cover.

[0016] Optionally, the tube body, the tube cover and the connecting piece are an integrated structure.

[0017] The beneficial effect of the PCR reaction tube provided by the present application is that: compared with the prior art, the PCR reaction tube of the present application is provided with a support portion near the opening on the outer wall of the tube body, and a protrusion corresponding to the support portion is provided on the tube cover. During the opening process, the tube cover is equivalent to a lever, and force is applied upward to the part of the edge of the tube cover away from the protrusion. This part of the tube cover is tilted, driving the protrusion on the other end of the tube cover downward to resist the support portion on the tube body. The support portion on the tube body plays the role of limiting the protrusion and providing reliable support for the protrusion, thereby avoiding the end of the tube cover away from the force application being pressed down and biting with the opening of the tube body to cause extrusion deformation, reducing the difficulty of opening the PCR reaction tube and reducing the possibility of the sealing plug breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] in:

[0020] Figure 1 This is a structural schematic diagram of a PCR reaction tube in an open state shown in one embodiment of the present application;

[0021] Figure 2 1 is a schematic cross-sectional view of a PCR reaction tube in a closed state, shown in one embodiment of the present application;

[0022] Figure 3 1 is a schematic diagram of the cross-sectional structure of a tube body in a PCR reaction tube according to an embodiment of the present application;

[0023] Figure 4 This is a schematic structural diagram of a tube cover in a PCR reaction tube shown in one embodiment of the present application.

[0024] Description of main component symbols:

[0025] 100. Pipe body;

[0026] 101, opening; 1011, clamping portion; 1001, detection chamber; 1002, sample adding chamber; 10021, liquid injection section; 10022, sealing section;

[0027] 200, tube cover;

[0028] 210, cover; 211, force-applying portion; 220, sealing plug; 230, snap-fitting portion;

[0029] 300, connector;

[0030] 10. Support part;

[0031] 20. Bump. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0033] It should be noted that when an element is referred to as being “mounted on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0036] As described in the background art, when the PCR reaction tube is opened, force is applied to one side of the lid, causing the lid to move eccentrically around the center of the sealing plug. The side of the lid that abuts the opening of the reaction tube engages with the opening, causing extrusion deformation, making it difficult to open the lid or breaking the sealing plug.

[0037] In order to solve the above problems, the embodiment of the present application provides a PCR reaction tube, such as Figure 1-Figure 2 As shown, the PCR reaction tube includes a tube body 100 and a tube cap 200. An opening 101 is defined at one end of the tube body 100, and a support portion 10 is provided on the outer wall of the tube body 100 near the opening 101. The tube cap 200 can be snapped onto the opening 101. A protrusion 20 is provided on the tube cap 200 that corresponds to the support portion 10. When force is applied to one side of the tube cap 200 to open it, the protrusion 20 abuts against the support portion 10, providing support for the tube cap 200 to flip over.

[0038] In the embodiment of the present application, the PCR reaction tube is provided with a support portion 10 on the outer wall of the tube body 100 near the opening 101, and a protrusion 20 corresponding to the support portion 10 is provided on the tube cover 200. During the opening process, the tube cover 200 acts as a lever, exerting an upward force on the edge of the tube cover 200 away from the protrusion 20 (such as Figure 2 As shown by the arrow F in the middle, the tube cover 200 is tilted at this point, driving the protrusion 20 on the other end of the tube cover 200 downward to abut against the support portion 10 on the tube body 100. The support portion 10 on the tube body 100 serves to limit and support the protrusion 20, providing reliable support for the protrusion 20, thereby preventing the end of the tube cover 200 away from the force application from being pressed down and engaging with the opening 101 of the tube body 100 to cause extrusion deformation, thereby reducing the difficulty of opening the PCR reaction tube and reducing the possibility of breakage of the sealing plug 220.

[0039] It can be understood that during the opening process, when force is first applied to the tube cover 200, the protrusion 20 on the tube cover 200 is used to abut against the support portion 10 on the tube body 100, acting as a fulcrum, so that the over-sealed area between the tube cover 200 and the tube body 100 is loosened first, and then the tube cover 200 can be easily removed from the opening 101.

[0040] In one embodiment, if Figure 1 As shown, the support portion 10 includes a flange arranged around the outer wall of the tube body 100 .

[0041] By configuring the support portion 10 as a flange, no matter how the tube cover 200 rotates on the opening 101 of the tube body 100 , it is ensured that the protrusion 20 on the tube cover 200 abuts against the flange on the tube body 100 during the opening process.

[0042] Specifically, combined Figure 2 As shown, when force is applied to the pipe cover 200 to open the pipe cover 200 , the protrusion 20 abuts against the side facing the same direction as the flange and the opening 101 .

[0043] It should be noted that, in addition to being designed as the above-mentioned flange surrounding the outer wall of the tube body 100, the support portion 10 can also be designed as a structure such as a bump, a rib, or a boss, and does not need to surround the outer wall of the tube body 100 in a full circle, as long as it can provide support against the protrusion 20 on the tube cover 200 during the opening process.

[0044] In one embodiment, if Figure 1-Figure 2 and Figure 4 As shown, the protrusion 20 is in the shape of an elongated strip, and one end of the protrusion 20 that contacts the support portion 10 is provided with a rounded corner.

[0045] The long, strip-shaped protrusion 20 increases the contact area with the support portion 10, improving the support strength between the two. The rounded corner design of the protrusion 20 abutting one end of the support portion 10 allows for smoother movement between the protrusion 20 and the support portion 10 when the tube cover 200 is flipped relative to the tube body 100.

[0046] In one embodiment, if Figure 1-Figure 2 and Figure 4 As shown, the tube cover 200 includes a cover body 210 and a sealing plug 220 disposed on the cover body 210 . The protrusion 20 is disposed on the cover body 210 and close to the sealing plug 220 . The sealing plug 220 can be inserted into the tube body 100 through the opening 101 .

[0047] The tube body 100 has a detection chamber 1001 and a sample loading chamber 1002 connecting the detection chamber 1001 with the opening 101. The sample loading chamber 1002 includes a liquid injection section 10021 and a sealing section 10022, which sequentially connect from the opening 101 to the detection chamber 1001. The sealing plug 220 is driven by the cover 210 to move from the liquid injection section 10021 to the sealing section 10022. The inner diameter of the liquid injection section 10021 is smaller than the outer diameter of the sealing plug 220. As the sealing plug 220 moves along the liquid injection section 10021, it can maintain a seal with the inner wall of the liquid injection section 10021 to prevent sample leakage, while also sliding along the inner wall of the liquid injection section 10021 to inject the sample into the detection chamber 1001. The inner diameter of the sealing section 10022 is smaller than the inner diameter of the injection section 10021, so that when the sealing plug 220 moves to the sealing section 10022, the inner wall of the sealing section 10022 further presses the sealing plug 220. At this time, the sealing plug 220 stops moving, and the sealing effect between the sealing plug 220 and the inner wall of the sealing section 10022 is enhanced, preventing the sample in the detection chamber 1001 from flowing back to the sample addition chamber 1002.

[0048] Specifically, the inner diameter of the injection section 10021 gradually decreases from the opening 101 to the sealing section 10022, and the inner diameter of the sealing section 10022 remains unchanged. Exemplarily, the inner wall of the injection section 10021 is a conical surface, and the inner wall of the sealing section 10022 is a cylindrical surface.

[0049] In a specific embodiment, Figure 1 and Figure 4 As shown, the cover 210, the sealing plug 220 and the protrusion 20 are an integrated structure. This design facilitates production and manufacturing. In actual production, the cover 210, the sealing plug 220 and the protrusion 20 can be integrally injection molded using PP (Polypropylene) material through an injection mold.

[0050] In a specific embodiment, Figure 1-Figure 2 and Figure 4 As shown, the edge of the cover body 210 has a force-applying portion 211 , and the force-applying portion 211 and the protrusion 20 are respectively located on two opposite sides of the sealing plug 220 .

[0051] The force applying portion 211 is provided to facilitate the user to apply force to the cover body 210 when opening and closing the cover.

[0052] Specifically, the force applying portion 211 may be a sheet-like structure extending outward from the edge of the cover 210 .

[0053] In one embodiment, combining Figure 1-Figure 4As shown, the inner wall of the opening 101 has a snap-fitting portion 1011, and the tube cover 200 has a snap-fitting portion 230 that can snap-fit ​​with the snap-fitting portion 1011. With this design, when the tube cover 200 is placed on the opening 101 of the tube body 100, the snap-fitting portion 230 in the tube cover 200 snaps into engagement with the snap-fitting portion 1011 at the opening 101 of the tube body 100, thereby integrally connecting the tube cover 200 and the tube body 100. To remove the tube cover 200, simply apply external force to the force-applying portion 211 on the cover body 210 to disengage the snap-fitting portion 1011 from the snap-fitting portion 230.

[0054] Specifically, in the embodiment of the present application, the inner side of the clamping portion 1011 has an annular groove, and the outer side of the clamping fitting portion 230 has an annular rib. The annular rib is embedded in the annular groove to achieve a clamping fit. Of course, in other embodiments, the inner side of the clamping portion 1011 may also be provided with an annular rib, and the outer side of the clamping fitting portion 230 may be provided with an annular groove, which can also achieve the mutual clamping effect, and this is not limited here.

[0055] It should be noted that the clamping connection between the clamping portion 1011 and the clamping fitting portion 230 is not limited to the concave-convex fit. In other embodiments, the clamping portion 1011 and the clamping fitting portion 230 may also adopt other types of clamping structures, which are not limited here.

[0056] In one embodiment, if Figure 1-Figure 2 As shown, the PCR reaction tube further includes a bendable connector 300 , which is connected between the tube body 100 and the tube cover 200 .

[0057] The tube cover 200 and the tube body 100 are connected by the connecting piece 300. When the tube cover 200 is removed from the opening 101 of the tube body 100, the tube cover 200 remains connected to the tube body 100 through the connecting piece 300, thereby preventing the tube cover 200 from falling or being lost.

[0058] Specifically, the connecting piece 300 can be a connecting rope or a plastic strip. Preferably, for ease of processing and manufacturing, the tube body 100, the tube cover 200 and the connecting piece 300 are an integrated structure and can be integrally injection molded using PP material through an injection mold.

[0059] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A PCR reaction tube, characterized in that: include: A tube body (100) is provided with an opening (101) at one end, and a support portion (10) is provided on the outer wall of the tube body (100) near the opening (101); as well as The pipe cover (200) can be snapped onto the opening (101). The pipe cover (200) is provided with a protrusion (20) corresponding to the support portion (10). When force is applied to one side of the pipe cover (200) to open the pipe cover (200), the protrusion (20) and the support portion (10) abut against each other to provide support for the turning of the pipe cover (200).

2. The PCR reaction tube according to claim 1, characterized in that The support portion (10) comprises a flange arranged around the outer wall of the tube body (100).

3. The PCR reaction tube according to claim 1, characterized in that The protrusion (20) is in the shape of an elongated strip, and one end of the protrusion (20) that contacts the supporting portion (10) is provided with a rounded corner.

4. The PCR reaction tube according to claim 1, characterized in that The tube cover (200) comprises a cover body (210) and a sealing plug (220) disposed on the cover body (210); the protrusion (20) is disposed on the cover body (210) and close to the sealing plug (220); and the sealing plug (220) can be inserted into the tube body (100) through the opening (101).

5. The PCR reaction tube according to claim 4, characterized in that: The cover body (210), the sealing plug (220) and the protrusion (20) are an integrated structure.

6. The PCR reaction tube according to claim 4, characterized in that: The edge of the cover body (210) has a force-applying portion (211), and the force-applying portion (211) and the protrusion (20) are respectively located on opposite sides of the sealing plug (220).

7. The PCR reaction tube according to claim 4, characterized in that: The tube body (100) has a detection chamber (1001) and a sample adding chamber (1002) communicating with the detection chamber (1001) and the opening (101); the sample adding chamber (1002) includes a liquid injection section (10021) and a sealing section (10022) communicating in sequence from the opening (101) to the detection chamber (1001); the sealing plug (220) can be moved from the liquid injection section (10021) to the sealing section (10022) under the drive of the cover body (210); the inner diameter of the liquid injection section (10021) is smaller than the outer diameter of the sealing plug (220) and larger than the inner diameter of the sealing section (10022).

8. The PCR reaction tube according to any one of claims 1 to 7, characterized in that: The inner wall of the opening (101) has a snap-fit ​​portion (1011), and the tube cover (200) has a snap-fitting portion (230) capable of snap-fitting with the snap-fitting portion (1011).

9. The PCR reaction tube according to any one of claims 1 to 7, characterized in that: The PCR reaction tube further comprises a bendable connector (300), wherein the connector (300) is connected between the tube body (100) and the tube cover (200).

10. The PCR reaction tube according to claim 9, characterized in that: The tube body (100), the tube cover (200) and the connecting piece (300) are an integrated structure.

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