Multifunctional sample pretreatment tube

Abstract

The utility model provides a multifunctional sample pretreatment tube which comprises a pretreatment tube body, a secondary tube and an inner tube, a clamped tube plug is arranged at an opening at the upper end of the pretreatment tube body, and a buckled tube cover is arranged on the tube plug; a sealing plate is arranged in the pipe plug, a plate hole is formed in the center of the sealing plate, the secondary pipe is inserted into the plate hole, the upper portion of the secondary pipe is clamped at the position of the plate hole, an annular groove is further formed in the sealing plate, the annular groove and the plate hole are concentric, the edge of the inner cover can be inserted into the annular groove, an inner hole is formed in the center of the inner cover, the inner pipe is installed on the inner hole, and filter membranes are arranged at the bottoms of the inner pipe and the secondary pipe. The aperture of the filter membrane on the secondary pipe is smaller than that of the filter membrane on the inner pipe. The pretreatment pipe is provided with a plurality of layers of filter pipes, and the bottom of each layer of filter pipe is provided with the filter membranes with different pore diameters, so that the purity of the finally obtained sample to be treated is higher, and the filter pipes can be independently arranged, so that more selectable combinations are provided.

Description

Technical Field

[0001] The utility model relates to the field of sample processing, and more specifically, to a multi-functional sample pretreatment tube. Background Art

[0002] In the fields of biomedicine, clinical diagnosis, environmental monitoring, food safety, and scientific research, accurate detection and analysis of liquid samples are crucial. These detections usually require a series of pretreatment steps for the samples to ensure the purity, stability, and detectability of the samples, so as to ensure the accuracy and reliability of the detection results. Sample pretreatment usually includes steps such as filtration, centrifugation, dilution, mixing, and temperature control.

[0003] In sample filtration, sometimes it is necessary to obtain precipitated and enriched microorganisms or cell tissues by precipitation and remove the filtered impurities. A single test tube cannot achieve the above effects, and when performing the above steps, it is also necessary to ensure that the samples in the test tube are not contaminated. Summary of the Utility Model

[0004] Based on the above technical problems, the utility model proposes a multi-functional sample pretreatment tube.

[0005] A multi-functional sample pretreatment tube includes: a processing tube body, a secondary tube, and an inner tube. A snap-on tube plug is provided at the opening at the upper end of the pretreatment tube body, and a tube cap that can be buckled is provided on the tube plug; a sealing plate is provided inside the tube plug, a plate hole is opened in the center of the sealing plate, the secondary tube is inserted into the plate hole, the upper part of the secondary tube is stuck at the plate hole, a ring groove is further provided on the sealing plate, the ring groove is concentric with the plate hole, the edge of the inner cover can be inserted into the ring groove, an inner hole is provided in the center of the inner cover, the inner tube is installed on the inner hole, filter membranes are provided at the bottoms of the inner tube and the secondary tube, and the pore diameter of the filter membrane on the secondary tube is smaller than the pore diameter of the filter membrane on the inner tube.

[0006] Preferably, chamfers are provided on the inner circles of the plate hole and the inner hole, the upper ends of the secondary tube and the inner tube are provided with outwardly flared flanges, the flange on the secondary tube will be stuck at the chamfer of the plate hole, and the flange on the inner tube will be stuck at the chamfer of the inner hole.

[0007] Preferably, the diameter of the upper part of the secondary tube is larger than the inner diameter of the plate hole.

[0008] Preferably, the diameter of the upper part of the inner tube is larger than the diameter of the inner hole.

[0009] Advantageous Effects: The pretreatment tube is provided with multiple layers of filter tubes, and filter membranes with different pore diameters are provided at the bottoms of each layer of filter tubes, so that the purity of the sample to be processed finally obtained is higher, and the filter tubes can be set separately, resulting in more optional combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 shows a schematic structural view of the present utility model;

[0011] Figure 2 shows a structural view of the hidden inner cover of the present utility model;

[0012] Figure 3 shows an internal structural view of the present utility model;

[0013] Figure 4 shows the present utility model Figure 3 partial enlarged view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0015] As Figures 1 to 4 shown, a multifunctional sample pretreatment tube includes: a treatment tube body 1, a secondary tube 4, and an inner tube 5. A snap-on tube plug 2 is provided at the opening at the upper end of the pretreatment tube body 1. When not in use, the tube plug 2 can be placed in a vacuum box sterilization device, and when in use, the tube plug 2 is taken out and pressed on the treatment tube body 1. A detachable tube cap 3 is provided on the tube plug 2, and the tube cap 3 can completely seal the treatment tube body 1.

[0016] A sealing plate 6 is provided inside the tube plug 2. The sealing plate 6 can be movably installed inside the tube plug 2. The lower side of the sealing plate 6 is supported by the tube orifice of the treatment tube body 1. A plate hole 11 is opened at the center of the sealing plate 6. The secondary tube 4 is inserted into the plate hole 11. The upper part of the secondary tube 4 is stuck at the plate hole 11. The height of the secondary tube 4 is lower than that of the tube plug 2. A ring groove 8 is also provided on the sealing plate 6. The ring groove 8 is concentric with the plate hole 11. The edge of the inner cover 7 can be inserted into the ring groove 8. An inner hole 10 is provided at the center of the inner cover 7. The inner tube 5 is installed on the inner hole 10. Filter membranes 9 are provided at the bottoms of the inner tube 5 and the secondary tube 4. The aperture of the filter membrane 9 on the secondary tube 4 is smaller than the aperture of the filter membrane 9 on the inner tube 5.

[0017] In operation, the secondary tube 4 and the inner tube 5 are placed in sequence. The inner tube 5 can be first inserted into the inner cover 7, and then the inner cover 7 and the inner tube 5 are installed on the sealing plate 6 together.

[0018] To ensure that the secondary tube 4 and the inner tube 5 will not fall and can be stably installed in the board hole 11 and the inner hole 10, chamfers are provided on the inner circles of the board hole 11 and the inner hole 10, and the upper ends of the secondary tube 4 and the inner tube 5 are provided with outwardly floating flanges 12. The flange 12 on the secondary tube 4 will be stuck at the chamfer of the board hole 11, and the flange 12 on the inner tube 5 will be stuck at the chamfer of the inner hole 10.

[0019] In another implementation, to ensure that the secondary tube 4 and the inner tube 5 can be stuck, the diameter of the upper part of the secondary tube 4 needs to be greater than the inner diameter of the board hole 11, and the diameter of the upper part of the inner tube 5 needs to be greater than the diameter of the inner hole 10.

[0020] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multifunctional sample pretreatment tube, characterized in that: include: A processing tube body, a secondary tube and an inner tube, wherein a snap-on tube plug is provided at the opening at the upper end of the pretreatment tube body, and a snap-on tube cover is provided on the tube plug; a sealing plate is provided inside the tube plug, and a plate hole is provided at the center of the sealing plate, and the secondary tube is inserted into the plate hole, and the upper part of the secondary tube is clamped at the plate hole; an annular groove is also provided on the sealing plate, and the annular groove is concentric with the plate hole, and the edge of the inner cover can be inserted into the annular groove, and an inner hole is provided at the center of the inner cover, and the inner tube is installed on the inner hole, and a filter membrane is provided at the bottom of the inner tube and the secondary tube, and the aperture of the filter membrane on the secondary tube is smaller than the aperture of the filter membrane on the inner tube.

2. The multifunctional sample pretreatment tube according to claim 1, characterized in that: The inner circles of the plate hole and the inner hole are both provided with chamfers, and the upper ends of the secondary tube and the inner tube are provided with outwardly floating burrs. The burrs on the secondary tube will be stuck at the chamfers of the plate hole, and the burrs on the inner tube will be stuck at the chamfers of the inner hole.

3. The multifunctional sample pretreatment tube according to claim 1, characterized in that: The diameter of the upper portion of the secondary tube is larger than the inner diameter of the plate hole.

4. The multifunctional sample pretreatment tube according to claim 1, characterized in that: The diameter of the upper portion of the inner tube is greater than the diameter of the inner hole.

Images