Microcentrifuge tube tray adaptive to PCR (Polymerase Chain Reaction) tube low-speed centrifuge

Abstract

The utility model relates to the technical field of medical instruments, and discloses a microcentrifuge tube tray matched with a PCR (Polymerase Chain Reaction) tube low-speed centrifuge, which comprises a mounting plate, two side plates, a fastening assembly and a plurality of groups of switch cover assemblies, the two side plates are detachably connected to the two sides of the mounting plate respectively, and each side plate is provided with a plurality of pipe holes; the fastening assembly is used for connecting and fixing the side plate and the mounting plate; and each cover opening and closing assembly is used for opening and closing a tube cover of the centrifugal tube. During an experiment, a worker places the side plate and the microcentrifuge tube test tube rack in an overlapping manner, places microcentrifuge tubes in the tube holes for experiment operation, and directly fixes the side plate and the mounting plate after the operation is finished, so that the transfer operation of numerous microcentrifuge tubes is avoided, the preposed time before a sample is centrifuged is shortened, and the accuracy of sample data is improved. The cover opening and closing assembly can be used for opening and closing tube covers of the whole row of microcentrifuge tubes, so that the operation efficiency of experiments is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes. Background Art

[0002] Low-speed centrifuges are widely used in many fields such as scientific research, medical treatment, and biology. Especially when microfiltration is required, reagents need to be quickly spun off from the tube wall or tube cap, and slow centrifugation of test tubes or tube racks is carried out, the low-speed centrifuge shows its unique advantages. Due to its small size, convenience, simple operation, good separation effect and other advantages, the low-speed centrifuge has become an indispensable device in the laboratory.

[0003] In the prior art, a tray needs to be installed on the centrifuge to place microcentrifuge tubes for centrifugation operations. During use, the experimenter manually takes out the microcentrifuge tubes on the test tube rack and snaps them into the tube holes of the tray to complete the fixation. However, in the actual use process, there are many microcentrifuge tubes that need to be centrifuged, and the process of the experimenter manually transferring and placing the microcentrifuge tubes one by one is too cumbersome, resulting in a long pre-centrifugation time of the samples in the microcentrifuge tubes, which affects the experimental data. For example, in mRNA extraction experiments, rapid centrifugation is required, and rapid and efficient experimental operations can ensure reducing the contact time between mRNA and RNase, thereby reducing the risk of mRNA degradation, maintaining its integrity, and at the same time avoiding the binding of mRNA to other non-specific components and improving the extraction efficiency.

[0004] Therefore, we propose a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes to solve the problems in the prior art that the transfer process of microcentrifuge tubes is cumbersome, the pre-centrifugation time of samples is too long, and the experimental data is affected. Content of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes, which is used to solve the problems in the prior art that the transfer process of microcentrifuge tubes is cumbersome, the pre-centrifugation time of samples is too long, and the experimental data is affected.

[0006] To achieve the above object and other related objects, the present utility model provides a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes, including a mounting plate, two side plates, a fastening assembly, and a plurality of switch cover assemblies;

[0007] The two side plates are respectively detachably connected to both sides of the mounting plate, and a plurality of tube holes are provided on each side plate;

[0008] The fastening assembly is used to connect the side plates and the mounting plate;

[0009] Each of the switch cover assemblies corresponds to the tube hole of the side plate respectively and is used to switch the cover of the centrifuge tube.

[0010] Preferably, the fastening assembly includes a pressing plate. A first connecting member is provided on the side wall of each side plate. First connecting grooves adapted to the first connecting members are respectively provided on the mounting plate and the pressing plate. A second connecting member is provided in the first connecting groove. Second through holes matching the second connecting member are respectively provided on the first connecting member and the pressing plate. A third connecting member is provided on the upper surface of the mounting plate, and a third through hole adapted to the third connecting member is provided on the pressing plate.

[0011] Preferably, the first connecting member is of a trapezoidal structure, the contact surface of the first connecting member and the side plate is an inclined surface, the second connecting member is of a cylindrical structure, the third connecting member is of a T-shaped structure, and the bottom end of the T-shaped structure is connected to the mounting plate.

[0012] Preferably, several tube holes on each side plate are in two rows. Two groups of switch cover assemblies are respectively provided on each side plate, and the two groups of switch cover assemblies correspond to the two rows of tube holes one by one.

[0013] Preferably, the switch cover assembly includes an opening rod and a closing cover plate. Rotating rods are connected to both ends of the opening rod. The closing cover plate and the two rotating rods on the same side rotate coaxially around both ends of the side plate respectively for opening and closing the cover of the centrifuge tube.

[0014] When the micro centrifuge tube is placed in the tube hole, the flange of its tube cover can be clamped by the opening rod and the closing cover plate.

[0015] Preferably, the side plate is rectangular. Fixing blocks perpendicular to its plane are provided on the short sides of each side plate. The rotating rod and the closing cover plate are both connected to the fixing block.

[0016] First protrusions are provided on the side walls at both ends of each closing cover plate, and first concave holes matching the first protrusions are provided on the inner sides of the rotating rods.

[0017] Second protrusions are provided on the outer sides of the rotating rods. The fixing block is of an L-shaped structure and a second concave hole matching the second protrusion is provided on the inner side.

[0018] Preferably, a mounting hole matching the external centrifuge mounting seat is provided at the central position of the mounting plate, and a placing groove corresponding to the mounting hole is provided at the central position of the pressing plate.

[0019] As described above, a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes disclosed by the present utility model has the following beneficial effects: By overlapping the side plates with the microcentrifuge tube racks and then placing the microcentrifuge tubes for experimental operations, after the pipetting is completed, the side plates are directly fixed to the mounting plate, avoiding manually transferring numerous microcentrifuge tubes one by one, shortening the lead time before the samples are centrifuged, and improving the accuracy of experimental data.

[0020] Meanwhile, the present device is also provided with a switch cover assembly. After the microcentrifuge tubes are placed, the switch cover assembly is used to simultaneously open and close the caps of the entire row of microcentrifuge tubes, avoiding opening and closing the tube caps one by one, simplifying the operation steps, and improving the operation efficiency of the experiment.

[0021] Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a perspective view of the microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes of the present utility model;

[0023] Figure 2 Shown is an exploded view of the microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes of the present utility model;

[0024] Figure 3 Shown is a perspective view of the switch cover assembly of the microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes of the present utility model.

[0025] Reference Numerals of Components:

[0026] 1. Mounting plate; 2. Side plate; 3. Fastening assembly; 4. Switch cover assembly;

[0027] 10. First connection groove; 11. Second connecting piece; 12. Second perforation;

[0028] 20. Fixed block; 201. Second concave hole;

[0029] 30. Pressing plate; 31. First connecting piece; 32. Third connecting piece; 301. Third perforation;

[0030] 40. Open cover rod; 41. Close cover plate; 42. Rotating rod;

[0031] 410. First protrusion; 420. First concave hole; 421.Second protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following specific embodiments illustrate the implementation manners of the present utility model. Persons familiar with this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0033] Please refer to Figures 1 to 3 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the efficacy that the present utility model can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that the present utility model can implement.

[0034] As Figures 1 - 2 shown, the present utility model provides a microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes, which includes a mounting plate 1, two side plates 2, a fastening assembly 3, and several switch cover assemblies 4; the mounting plate 1 is a square structure and is used to be mounted on the external centrifuge base, especially the commonly used microcentrifuges in current laboratories. The two side plates 2 are also rectangular structures with a length equivalent to that of the mounting plate 1. The two side plates 2 are respectively detachably connected to both sides of the mounting plate 1, and several tube holes are provided on each side plate 2; the aperture of the tube holes matches the outer diameter of the microcentrifuge tube so that the microcentrifuge tube can be just inserted into the tube holes. The commonly used specifications of microcentrifuge tubes include 0.2 ml, 0.5 ml, 1.5 ml, etc. The fastening assembly 3 is used to connect the side plate 2 and the mounting plate 1; each switch cover assembly 4 corresponds to the tube hole of the side plate 2 respectively and is used to open and close the tube cap of the centrifuge tube. When in use, the two side plates 2 can be disassembled and placed on the test tube rack of the microcentrifuge tube, so that the tube holes of the side plates 2 correspond one by one to the placement slots on the test tube rack. The empty microcentrifuge tubes are directly placed in the tube holes of the side plates 2, then the microcentrifuge tubes are simultaneously placed on the tube holes of the side plates 2 and the jacks of the test tube rack, and then experimental operations are carried out. After the operation is completed, the experimenter directly moves the side plate 2 and connects it to the mounting plate 1, and then performs centrifugation. Since the microcentrifuge tubes are all located on the plate holes of the side plate 2, directly transferring the side plate 2 can simultaneously transfer multiple microcentrifuge tubes at one time, without manually taking out the microcentrifuge tubes from the test tube rack one by one and transferring them to the tray, saving time.

[0035] In one embodiment, the fastening assembly 3 includes a pressing plate 30. The pressing plate 30 has a square structure identical to that of the mounting plate 1, which facilitates fitting and fixing with the mounting plate 1. A first connecting member 31 is provided on the side wall of each side plate 2. First connecting grooves 10 adapted to the first connecting member 31 are respectively provided on the mounting plate 1 and the pressing plate 30. A second connecting member 11 is provided in the first connecting groove 10. Second through holes 12 matching the second connecting member 11 are provided on both the first connecting member 31 and the pressing plate 30. A third connecting member 32 is provided on the upper surface of the mounting plate 1, and a third through hole 301 adapted to the third connecting member 32 is provided on the pressing plate 30. During use, by placing the first connecting member 31 in the first connecting groove 10, the second connecting member 11 passes through the second through hole 12 on the first connecting member 31, covering the pressing plate 30, so that the second connecting member 11 also passes through the second through hole 12 of the pressing plate 30. The third connecting member 32 passes through the third through hole 301 of the pressing plate 30, and the pressing plate 30 is fixed to the mounting plate 1, so that the pressing plate 30 and the mounting plate 1 cooperate to clamp and fix the first connecting member 31, completing the fixing operation of the side plate 2.

[0036] In one embodiment, the first connecting member 31 has a trapezoidal structure, and the contact surface of the first connecting member 31 with the side plate 2 is an inclined surface. By providing the inclined surface, an inclined angle (which can be 2 - 15 degrees) is generated between the mounting plate 1 and the side plate 2, so that the microcentrifuge tube has a certain inclined angle, making the substances to be centrifuged precipitate at the bottom of the microcentrifuge tube rather than on the side wall during centrifugation. The second connecting member 11 has a cylindrical structure. After the first connecting member 31 is placed in the first connecting groove 10, the second connecting member 11 is in a state of passing through the second through hole 12 in the first connecting member 31. After the first connecting member 31 is released, the second through hole 12 will generate an inclined angle under the influence of gravity. At this time, the second connecting member 11 supports the first connecting member 31 to prevent the first connecting member 31 from falling off. The third connecting member 32 has a T-shaped structure, and the bottom end of the T-shaped structure is connected to the mounting plate 1, and the connection method is a rotating connection. During use, after the third connecting member 32 passes through the third through hole 301, the third connecting member 32 is rotated so that the third connecting member 32 is misaligned with the third through hole 301, and the lower surface of the third connecting member 32 presses the pressing plate 30 to fix the pressing plate 30 to the mounting plate 1. In order to maintain the connection stability between the pressing plate 30 and the mounting plate 1, usually at least two third connecting members 32 are provided and symmetrically distributed on both sides of the mounting plate 1.

[0037] In one embodiment, the tube holes on each side plate 2 are arranged in two rows, with a simple and reasonable design, which is convenient for the user to operate. Two groups of switch cover assemblies 4 are respectively provided on each side plate 2, and the two groups of switch cover assemblies 4 correspond to the two rows of tube holes one by one, and are respectively used to simultaneously open and close the caps of the centrifuge tubes in the corresponding row. The switch cover assembly 4 includes an open cap rod 40 and a closing cover plate 41. Rotating rods 42 are connected to both ends of the open cap rod 40. The closing cover plate 41 and the two rotating rods 42 on the same side rotate coaxially around both ends of the side plate 2, so that the closing cover plate 41 closes all the caps in a row, and the rotating rod 42 drives the open cap rod 40 to open the caps in the same row.

[0038] In some embodiments, first protrusions 410 are provided on the side walls at both ends of each closing cover plate 41, and first concave holes 420 matching the first protrusions 410 are provided on the inner sides of each rotating rod 42. By snapping the first protrusions 410 into the first concave holes 420, the closing cover plate 41 is fixed to the rotating rod 42, so as to clamp the caps of the centrifuge tubes.

[0039] When the micro centrifuge tubes are placed in the tube holes, the flange parts of their caps can be clamped by the open cap rod 40 and the closing cover plate 41. When opening the caps, the rotating rods 42 are rotated outward for each row of centrifuge tubes or the open cap rod 40 is directly rotated to open the caps of the centrifuge tubes; when closing the caps, the closing cover plate 41 is rotated inward (the position between the two rows of centrifuge tubes is the inner side, and the opposite direction is the outer side) to press and close the caps of the centrifuge tubes, realizing the operation of opening and closing the caps of a row of centrifuge tubes. Using this device can improve the operation efficiency during the centrifugation process, shorten the pre-centrifugation lead time of the samples, and improve the accuracy of the sample data after centrifugation.

[0040] In some embodiments, second protrusions 421 are provided on the outer sides of the rotating rods 42, and the fixing block 20 has an L-shaped structure and a second concave hole 201 matching the second protrusions 421 is provided on the inner side. By snapping the second protrusions 421 into the second concave holes 201, the rotating rods 42 are fixed to the fixing block 20. It is convenient to fold and store the switch cover assembly 4 for easy arrangement.

[0041] In one embodiment, the side plate 2 is rectangular, and fixing blocks 20 perpendicular to its plane are provided on the short sides of each side plate 2. The rotating rods 42 and the closing cover plates 41 are both connected to the fixing blocks 20, and the connection method is a rotating connection. When the micro centrifuge tubes are placed in the tube holes, the axis of rotation of the caps of the centrifuge tubes coincides with the axis of rotation of the rotating rods 42, the closing cover plates 41 and the fixing blocks 20, which is convenient for the open cap rod 40 and the closing cover plate 41 to fit the caps and rotate synchronously.

[0042] In one embodiment, a mounting hole matching the external centrifuge mounting seat is provided at the central position of the mounting plate 1, and a placement groove corresponding to the mounting hole is provided at the central position of the pressure plate 30. Generally, a boss is provided on the mounting seat of the centrifuge. The assembly can be completed by directly inserting the boss into the mounting hole of the mounting plate 1. The area of the placement groove of the pressure plate 30 is larger than the mounting hole of the mounting plate 1, which will not affect the connection between the mounting plate 1 and the boss on the centrifuge during assembly.

[0043] The specific use process of the present utility model is as follows: Separate the side plate 2 from the mounting plate 1 and place it flat on the test tube rack for microcentrifuge tubes, so that the tube holes of the side plate 2 correspond to the placement grooves of the test tube rack one by one. Pass the brand-new empty microcentrifuge tubes through the tube holes of the side plate 2 and place them on the test tube rack. After the pipetting is completed, use the closing cover plate 41 to quickly close the cover. Then the experimenter transfers the side plate 2 and the microcentrifuge tubes, installs the side plate 2 on the mounting plate 1, starts the centrifuge for centrifugation. After the centrifugation is completed, remove each side plate 2 one by one and place it back on the test tube rack, and use the opening cover rod 40 to open the tube cover.

[0044] In this article, the microcentrifuge tube tray adapted to the low-speed centrifuge for PCR tubes can realize the function of quick disassembly and assembly. The unused centrifuge tubes are stuck on the side plate 2, and the tube cover of the centrifuge tube is in a 180-degree open state. The closing cover plate 41 is located below the tube cover of the centrifuge tube. Rotate the rotating rod 42 so that the rotating rod 42 is engaged and fixed with the closing cover plate 41. At this time, the closing cover plate 41 and the opening cover rod 40 cooperate to clamp the flange of the tube cover of the centrifuge tube. Rotate the closing cover plate 41 in the reverse direction to drive the tube cover of the centrifuge tube to flip, so that the tube cover of the centrifuge tube is engaged with the tube orifice of the centrifuge tube to realize the function of closing the cover. Rotate the rotating rod 42 again, and the rotating rod 42 pushes the flange of the tube cover of the centrifuge tube through the opening cover rod 40 to drive the tube cover of the centrifuge tube to open, realizing the operation of opening and closing the covers of a row of centrifuge tubes. It saves the pre-set time before the samples are centrifuged and improves the accuracy of sample data.

[0045] Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0046] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A microcentrifuge tube tray adapted for a low-speed centrifuge of PCR tubes, characterized in that: It includes a mounting plate (1), two side plates (2), a fastening assembly (3) and several switch cover assemblies (4); The two side plates (2) are respectively detachably connected to both sides of the mounting plate (1), and several pipe holes are provided on each side plate (2); The fastening assembly (3) is used to connect the side plate (2) and the mounting plate (1); Each switch cover assembly (4) corresponds to the pipe hole of the side plate (2) respectively and is used to switch the tube cap of the centrifuge tube.

2. The microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes according to claim 1, wherein: The fastening assembly (3) includes a pressing plate (30). A first connecting member (31) is provided on the side wall of each side plate (2). First connecting grooves (10) adapted to the first connecting member (31) are respectively provided on the mounting plate (1) and the pressing plate (30). A second connecting member (11) is provided in the first connecting groove (10). Second through holes (12) matching the second connecting member (11) are provided on both the first connecting member (31) and the pressing plate (30). A third connecting member (32) is provided on the upper surface of the mounting plate (1), and a third through hole (301) adapted to the third connecting member (32) is provided on the pressing plate (30).

3. The microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes according to claim 2, wherein: The first connecting member (31) is of a trapezoidal structure, the contact surface between the first connecting member (31) and the side plate (2) is an inclined surface, the second connecting member (11) is of a cylindrical structure, the third connecting member (32) is of a T-shaped structure, and the bottom end of the T-shaped structure is connected to the mounting plate (1).

4. A microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes, characterized in that: The pipe holes on each side plate (2) are arranged in two rows, and two groups of switch cover assemblies (4) are respectively provided on each side plate (2), and the two groups of switch cover assemblies (4) correspond to the two rows of pipe holes one by one.

5. A microcentrifuge tube tray adapted for a low-speed centrifuge of PCR tubes, characterized in that: The switch cover assembly (4) includes an open cover rod (40) and a closing cover plate (41). Rotating rods (42) are connected to both ends of the open cover rod (40). The closing cover plate (41) and the two rotating rods (42) on the same side rotate coaxially around both ends of the side plate (2) respectively and are used to open and close the tube cap of the centrifuge tube; When a micro centrifuge tube is placed in the pipe hole, the flange of its tube cap can be clamped by the open cover rod (40) and the closing cover plate (41).

6. The microcentrifuge tube tray adapted to a low-speed centrifuge for PCR tubes according to claim 5, wherein: The side plate (2) is rectangular, and fixing blocks (20) perpendicular to its plane are provided on the short sides of each side plate (2). The rotating rod (42) and the closing cover plate (41) are both connected to the fixing block (20); First protrusions (410) are provided on the side walls at both ends of each closing cover plate (41), and first concave holes (420) matching the first protrusions (410) are provided on the inner sides of each rotating rod (42); Second protrusions (421) are provided on the outer sides of the rotating rods (42), and the fixing block (20) is of an L-shaped structure and a second concave hole (201) matching the second protrusions is provided on the inner side.

7. A microcentrifuge tube tray adapted for a low-speed centrifuge of PCR tubes, characterized in that: A mounting hole matching the external centrifuge mounting seat is provided at the central position of the mounting plate (1), and a placement groove corresponding to the mounting hole is provided at the central position of the pressing plate (30).

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