CN220982848U

CN220982848U - Split sampling tube

Info

Publication number: CN220982848U
Application number: CN202322526189.5U
Authority: CN
Inventors: 李富友; 刘嘉
Original assignee: Shanghai Taihui Biotechnology Co ltd
Current assignee: Shanghai Taihui Biotechnology Co ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-05-17
Anticipated expiration: 2033-09-18

Abstract

The utility model relates to the field of medical equipment, in particular to a split sampling tube, which comprises the following components: the separation assembly is used for separating the tube cavity of the sampling tube to form a collection cavity and a separation cavity, and the separation assembly is used for passing through the set components of the blood sample in one direction; a collection chamber for collecting a blood sample; a separation chamber for collecting the blood sample components separated by the separation assembly; the injection hole is communicated with the collecting cavity and is used as an inlet blood supply sample of the sampling tube to enter; and the sampling hole is communicated with the separation cavity and is used as an outlet of the sampling tube for taking out the separated blood sample components. As a further scheme of the utility model: the two ends of the sampling tube body are all open, the sampling tube is bent to form two sections of vertical sections, the tube cavities of the two sections of vertical sections are respectively a collecting cavity and a separating cavity, and the injection holes and the sampling holes are respectively arranged at the openings at the two ends of the sampling tube body. The utility model improves the blood separation efficiency and avoids cross contamination during blood sample extraction.

Description

Split sampling tube

Technical Field

The utility model relates to the field of medical instruments, in particular to a split sampling tube.

Background

In clinical treatment, it is generally necessary to collect blood from a patient and test the blood sample to analyze the pathological condition of the patient, thereby obtaining a specific type of cell sample, and performing various analyses, experiments and researches, which are helpful for in understanding the pathogenesis of different diseases, identification of diagnostic markers, development of new drugs, and implementation of personalized treatment.

At present, in the process of testing blood samples, collected blood samples need to be subjected to centrifugal treatment, and due to the difference of blood cell sizes and densities, sedimentation rates are also different under the action of centrifugal force, so that the blood samples are separated. After centrifugation, the blood sample after the treatment is sucked by the sampling needle for testing, so that the operation steps of blood separation are increased, the time of blood separation is prolonged, and the cost of routine blood assay is increased; on the other hand, after the blood is separated by using the sampling tube, the blood plasma and the red blood cells can be layered in the blood sampling tube, but because the sample inlet and the sample outlet of the traditional single-channel cylindrical blood sampling tube are the same outlet, when the needle is used for extracting and testing the layered blood plasma and the red blood cells, the needle is easy to be adhered to the upper blood plasma and the upper blood plasma to be mixed into the lower red blood cells, so that the blood plasma and the red blood cells are mixed again, pollution is caused, and the detection result is inaccurate, so that the solution is needed.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the utility model provides a split sampling tube. The utility model improves the blood separation efficiency and avoids cross contamination during blood sample extraction.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A split sampling tube comprises the following components:

The separation assembly is used for separating the tube cavity of the sampling tube to form a collection cavity and a separation cavity, and the separation assembly is used for passing through the set components of the blood sample in one direction;

A collection chamber for collecting a blood sample;

a separation chamber for collecting the blood sample components separated by the separation assembly;

the injection hole is communicated with the collecting cavity and is used as an inlet blood supply sample of the sampling tube to enter;

and the sampling hole is communicated with the separation cavity and is used as an outlet of the sampling tube for taking out the separated blood sample components.

As a further scheme of the utility model: the two ends of the sampling tube body are all open, the sampling tube is bent to form two sections of vertical sections, the tube cavities of the two sections of vertical sections are respectively a collecting cavity and a separating cavity, and the injection holes and the sampling holes are respectively arranged at the openings at the two ends of the sampling tube body.

As still further aspects of the utility model: the opening parts at the two ends of the sampling tube body are provided with openable and closable cover bodies to close the opening of the sampling tube, and the injection hole and the sampling hole are respectively arranged on the two cover bodies.

As still further aspects of the utility model: the sampling tube is internally provided with a partition plate so as to divide the collecting cavity into at least two groups of collecting compartments, the partition plate also divides the separating cavity into separating compartments corresponding to the number of the collecting compartments, and each collecting compartment is separated from the corresponding separating compartment by a separating component; the injection holes arranged on the cover body correspond to the collection compartments in number, and each injection hole is communicated with each collection compartment in a one-to-one correspondence manner; the sampling holes arranged on the cover body correspond to the separation cells in number, and each sampling hole is communicated with each separation cell in a one-to-one correspondence.

As still further aspects of the utility model: the tube body of the sampling tube is U-shaped, V-shaped or L-shaped.

As still further aspects of the utility model: the sampling tube is provided with an opening at one side, and the collecting cavity and the separating cavity are communicated with the opening of the sampling tube after the tube cavity of the sampling tube is separated by the separating component; the opening of the sampling tube is closed by a cover body which can be opened and closed, and the injection hole and the sampling hole are both arranged on the cover body.

As still further aspects of the utility model: the separation assembly uniformly separates the lumen of the sampling tube along the vertical direction, thereby forming a collection cavity and a separation cavity.

As still further aspects of the utility model: the separation assembly is in a cylindrical structure with an opening at the top, the separation assembly and the inner wall of the sampling tube are enclosed to form a ring cavity, and the ring cavity and the cylindrical cavity of the separation assembly respectively form a collection cavity and a separation cavity.

As still further aspects of the utility model: the sampling tube is provided with an opening at one side, and the separation assembly separates the separation cavity from the opening of the sampling tube; the opening of the sampling tube is closed by a cover body which can be opened and closed, the injection hole is arranged on the cover body, and the sampling hole is arranged on the tube body of the sampling tube.

As still further aspects of the utility model: the separation assembly is horizontally arranged so that the tube cavity of the sampling tube is layered up and down, the upper tube cavity of the sampling tube is a collecting cavity, and the lower tube cavity of the sampling tube is a separation cavity.

As still further aspects of the utility model: the sampling tube is also provided with a differential pressure component which is used for applying positive pressure to the collecting cavity and/or negative pressure to the separating cavity.

As still further aspects of the utility model: the pressure difference component comprises a negative pressure pipe which is communicated with the separation cavity after passing through the sampling hole, and the negative pressure pipe is communicated with the negative pressure pump through a negative pressure valve so as to suck gas in the separation cavity.

As still further aspects of the utility model: the pressure difference component comprises a negative pressure pipe which is communicated with the separation cavity after passing through the sampling hole, a piston rod is coaxially arranged in the negative pressure pipe, the contact surface of the piston rod and the negative pressure pipe is in sealing arrangement, and the piston rod and the negative pressure pipe are in sliding fit along the length direction so as to suck gas in the separation cavity.

As still further aspects of the utility model: the bottom of the sampling tube is planar for the stable placement of the tube body.

As still further aspects of the utility model: the bottom of the sampling tube is non-planar, and the bottom of the sampling tube is fixed in the mounting seat so as to facilitate stable placement of the sampling tube.

As still further aspects of the utility model: the separation component is one of a blood filtering plate, a filtering membrane and a separation gel.

As still further aspects of the utility model: the separation assembly further comprises a carrier plate for carrying the separation assembly.

As still further aspects of the utility model: the cover body is a rigid cover body which is matched with the opening thread of the sampling tube in a threaded way or a flexible cover body which can be penetrated by a needle head.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, the lumen of the sampling tube is separated by the separation assembly to form the collection cavity for collecting the blood sample and the separation cavity for collecting the separated blood sample components, so that the injection hole for sample injection is separated from the sampling hole for sample discharge, the sampling needle or the instrument is used for injecting the original blood sample and extracting the processed blood sample in different channels, the blood separation efficiency is improved, cross contamination is avoided during blood sample extraction, the accuracy of the test result is ensured to the greatest extent, and the detection accuracy is improved.

2. The opening of the tube body can be sealed by the cover body, so that the leakage of blood samples or the introduction of some impurities into the environment in the transfer process of the sampling tube can be avoided; the sampling tube is divided into a plurality of collecting compartments and a plurality of separating compartments by the partition plates, and the partition plates cannot permeate liquid to separate the compartments, so that different blood samples can be injected into different compartments, or when the blood samples of the same patient need multiple components for testing, the components in the blood can be separated by placing different separating components.

3. The shape of the tube body of the sampling tube can be adaptively adjusted according to different use requirements, and in order to accelerate the separation speed, a pressure difference component can be arranged to increase the collection cavity or decompress the separation cavity, so that a pressure difference is formed between the two cavities, and the speed of the components passing through the separation component is greatly improved.

4. The bottom of the sampling tube can be arranged to be planar and convenient to place, or a stable mounting seat is independently processed to adapt to the bottom shapes of different sampling tubes; the separation assembly can be made of different materials to adapt to different use scenes.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.

Fig. 3 is a schematic structural view of a third embodiment of the present utility model.

Fig. 4 is a schematic structural view of a fourth embodiment of the present utility model.

Fig. 5 is a schematic structural view of a fifth embodiment of the present utility model.

Fig. 6 is a schematic structural view of a sixth embodiment of the present utility model.

Fig. 7 is a schematic structural view of a seventh embodiment of the present utility model.

Fig. 8 is a schematic structural view of an eighth embodiment of the present utility model.

In the figure:

1. A collection chamber; 11. A collection compartment;

2. A separation chamber; 21. Separating the cells;

3. a cover body; 31. An injection hole; 32. A sampling hole;

4. a separation assembly; 41. Filtering holes;

5. a mounting base; 6. A partition plate;

7. A differential pressure assembly; 71. a negative pressure valve; 72. a piston rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 8, in an embodiment of the present utility model, a split sampling tube is provided, wherein a tube body of the sampling tube is separated by a separation component 4 to form a collection chamber 1 and a separation chamber 2, and the separation component 4 is one of a blood filtering plate, a filtering membrane and a separation gel.

Specifically, the blood filtering plate can be made of a blood filtering membrane material, so that hemolysis can be greatly inhibited, meanwhile, separation and filtration of red blood cells can be realized rapidly, plasma and blood cells can be separated and treated through the blood filtering plate, the plasma can be discharged through the blood filtering plate, and the blood cells are trapped on one side of the blood filtering plate.

The filter membrane is a membrane of a material with a small pore size, such as cellulose, polyvinylidene fluoride, polysulfone, etc., which is biologically inert, or a material with adsorptivity or affinity for certain components in blood, so that components which can be adsorbed by the filter membrane or physically affinity for the medium of the filter membrane are trapped in the collection chamber 1, and the remaining components enter the separation chamber 2, such as serum, plasma, etc.

The separating gel is a viscous fluid, and the structure of the separating gel contains a large number of hydrogen bonds, and a net structure is formed due to association of the hydrogen bonds. Under the action of centrifugal force, the network structure is broken, and the fluid with low viscosity is obtained. A gelatinous separation layer can thus be formed between the serum and the blood clot to separate the serum from the blood clot, this separation layer corresponding to the separation module 4; the serum separating gel is used as the separating medium in blood sampling tube for biochemical serum or plasma test, and can separate serum from red blood cell completely to obtain high quality serum and ensure the accuracy of blood test effectively. The specific gravity of the serum separation gel is between that of the serum (or plasma) and that of the red blood cells, so that the serum (or plasma) and the red blood cells can be separated, and the separation barrier function is realized.

The separation module 4 may be porous, a porous medium, or a porous material. The medium may have a through hole or a non-through hole. The holes may be continuous holes (two or more holes fluidly connected) or discontinuous holes (two or more holes substantially fluidly disconnected). The porous medium may be a fibrous medium. The fibers may be natural fibers, chemical fibers or composite fibers. The porous medium may be formed of a material such as cellulose, glass fiber, hollow fiber, cotton, nitrocellulose, polysulfone, or the like. The hollow fibers may be formed of polyvinyl alcohol copolymer, polymethyl methacrylate, polymer alloy, or the like. The medium may be a hollow fiber plasma separation membrane. The porous medium may be water-soluble. For example, water-soluble cellulose may be used. The porous medium may be a porous polymer (high molecular porous body). The porous medium may be formed in a sponge shape. The porous medium may be formed into a shape of a membrane, a thin film, a test paper, or the like. The porous medium may have substantially the ability to separate plasma. The porous medium may be formed of a plasma separation filter, a plasma separation membrane, or the like. The target substance contained in the plasma or serum component may be a protein. The protein may be albumin, globulin or hemoglobin. The glycated protein may be a glycated albumin, a glycated globulin, or a glycated hemoglobin.

According to the different materials of the separation component 4, the separation component 4 may further include a carrier plate, where the carrier plate is used to carry one of the blood filtering plate, the filtering membrane and the separation gel, and the carrier plate has a certain supporting degree, or may assist in fixing the separation unit, for example, is used to carry the filtering membrane or the separation gel. The bearing plate can play a role in separating the collecting cavity 1 and the separating cavity 2, the plate body of the bearing plate can be provided with the filter holes 41, and the blood filtering plate, the filter membrane or the separating gel are arranged in the filter holes 41, so that the filter holes 41 have a unidirectional filter function; the shape of the plate body of the bearing plate can be matched with the shape of the blood filtering plate, the filtering membrane or the separating gel.

After the collected blood sample is input into the collecting cavity 1 by an operator, the blood sample is filtered by the separating component 4, the blood sample component which cannot permeate through the separating component 4 is remained in the collecting cavity 1, and the blood sample component which cannot permeate through the separating component 4 enters the separating cavity 2, so that the blood sample can be directly separated in the split type sampling tube without centrifugal separation of a large-sized centrifugal machine, and the blood sample can be detected immediately after the blood sample is processed, and the operation is simple and convenient.

The opening of the body of the sampling tube can be sealed by a cover 3, and in general, the sampling tube needs to be transferred from the sampling window to the detection chamber or the laboratory after sampling, and the cover 3 is arranged to avoid spilling the blood sample or introducing some impurities in the environment during the transfer process. The cover body 3 can be an open-close type rigid cover body or a rigid cover body screwed with the screw thread of the sampling tube; the cover 3 may also be a rubber cap or an airtight cap through which the sampling needle may be passed directly for injection or blood sample extraction operations. The surface of the cover body 3 can be provided with a through hole, the through hole is plugged by a clamping block, and the clamping block can be pulled to rotate by a fixing ring or a pull ring so as to plug or open the through hole for injection or sampling operation.

The specific arrangement of the sampling tube is presented in the following examples:

Example 1: the sampling pipe is U type tubulose, and the body both ends all are opened, and the lumen of U type pipe two sections pipe shaft is collection chamber 1 and separation chamber 2 respectively, and separation assembly 4 level is arranged in the bottom of collection chamber 1. The openings at the two ends of the sampling tube are all closed by the cover bodies 3, and the two cover bodies 3 are respectively provided with an injection hole 31 communicated with the collecting cavity 1 and a sampling hole 32 communicated with the separating cavity 2. The bottom of the sampling tube is planar so as to be convenient for placement.

Besides the U-shaped, the shape of the sampling tube can be also arranged into an L shape and a V shape, and the bending exists to divide the tube body of the sampling tube into two sections of tube bodies which are convenient to distinguish.

Example 2: based on the embodiment 1, the bottom of the tube body of the sampling tube is in an arc shape, a plane is not formed by independent processing, a mounting seat 5 with an arc-shaped notch is formed by independent processing, and the sampling tube is directly clamped into the arc-shaped notch of the mounting seat 5.

The mount pad 5 is equivalent to the effect of mount pad or sampling pipe support to avoid the sampling pipe to pour because place unstably and lead to the blood sample to spill after the injection blood sample, perhaps the operator can also place the sampling pipe earlier on mount pad 5 when failing to in time cover lid 3 after the injection blood sample, cover lid 3 again, the operator of being convenient for samples according to own operating habit, and the selectivity is more nimble. The bottom of each of the following embodiments may be fixed by the mounting base 5, or the bottom may be processed into a flat shape for placement.

Example 3: on the basis of the embodiment 1, a plurality of groups of U-shaped partition plates 6 are arranged in the tube body of the sampling tube, one section of the partition plates 6 divides the collecting cavity 1 into a plurality of groups of collecting separation cavities 11, and the other section of the partition plates 6 divides the separating cavity 2 into a plurality of groups of separating separation cavities 21; the separation modules 4 are equally divided by the dividing plates 6. The cover body 3 corresponding to the collecting cavity 1 is provided with injection holes 31 with the number corresponding to the number of the collecting compartments 11, and each injection hole 31 is communicated with each collecting compartment 11 in a one-to-one correspondence manner. The cover body 3 corresponding to the separation cavity 2 is provided with sampling holes 32 corresponding to the separation cavities 21 in number, and each sampling hole 32 is communicated with each separation cavity 21 in a one-to-one correspondence manner.

After separation by the separation plate 6, there are a plurality of collection compartments 11 and a plurality of separation compartments 21 in the sampling tube, and the number and specific shape of the separation plate 6 are not limited. The separation plate 6 is impermeable to liquid to separate the compartments so that different blood samples can be injected into different compartments or the separation of components in the blood can be performed by placing different separation modules 4 when the blood samples of the same patient require multiple components for testing.

Example 4: the sampling tube is arranged in a cylindrical test tube shape, and the top of the sampling tube is provided with an opening; the separation assembly 4 is arranged in the sampling tube along the vertical direction, so that the left and right of the tube cavity of the sampling tube are uniformly separated to form a collection cavity 1 and a separation cavity 2. The top opening of the sampling tube is provided with a cover body 3, and an injection hole 31 and a sampling hole 32 are arranged on the cover body 3 and are respectively communicated with the collecting cavity 1 and the separating cavity 2.

The separation assembly 4 is arranged in the vertical direction to form a preferred embodiment, and in practical use, the separation assembly 4 can be obliquely arranged, and only a space for the sampling hole 32 is required to be reserved on the cover body 3, so that components in the separation cavity 2 can be taken out through the sampling hole 32 of the cover body 3.

Example 5: the sampling tube is arranged in a cylindrical test tube shape, and the top of the sampling tube is provided with an opening; the separation assembly 4 is arranged in the sampling tube along the horizontal direction to separate the tube cavity of the sampling tube up and down, the upper tube cavity is a collection cavity 1, and the lower tube cavity is a separation cavity 2. The top opening of the sampling tube is provided with a cover body 3, and the cover body 3 is provided with an injection hole 31 so as to be communicated with the collecting cavity 1. The body of the sampling tube is provided with a sampling hole 32. The sampling aperture 32 is preferably a rubber cap or soft material and an operator can insert a needle into the sampling aperture 32 to extract the processed blood sample components for testing or testing.

The separation assembly 4 may also be arranged obliquely, simply by separating the separation chamber 2 from the top opening of the sampling tube.

Example 6: the sampling tube is arranged in a cylindrical test tube shape, and the top of the sampling tube is provided with an opening; the sampling tube provides the separation assembly 4 in an open-topped cylindrical configuration such that the sampling tube is arranged in a sleeve-like manner. The separation assembly 4 is preferably arranged coaxially with the sampling tube, an annular cavity is formed by enclosing the separation assembly 4 and the inner wall of the sampling tube, the annular cavity and the cylindrical cavity of the separation assembly 4 can be used as the collection cavity 1 and the separation cavity 2 respectively, and the positions inside and outside the collection cavity 1 and the separation cavity 2 are not limited. The top opening of the sampling tube is provided with a cover body 3, and an injection hole 31 and a sampling hole 32 are arranged on the cover body 3 and are respectively communicated with the collecting cavity 1 and the separating cavity 2.

Example 7: in order to increase the separation speed of the blood sample on the basis of example 1, a differential pressure assembly 7 was added. The differential pressure assembly 7 comprises a negative pressure pipe passing through the sampling hole 32, the negative pressure pipe is communicated with a negative pressure pump through a negative pressure valve 71, and the negative pressure pump pumps the gas in the separation cavity 2 to reduce the pressure in the separation cavity 2, so that the pressure difference exists between the separation cavity 2 and the collection cavity 1, and the separation rate of the blood sample is accelerated.

In this embodiment, the pressure in the collecting chamber 1 can be increased by introducing gas into the collecting chamber 1, and the effect of causing a pressure difference between the separating chamber 2 and the collecting chamber 1 can be achieved; to maximize the increase in separation rate, the pressure in the separation chamber 2 may be reduced while the pressure in the collection chamber 1 is increased.

The differential pressure assembly 7 of the present embodiment can be directly applied to embodiments 2 to 6, and the same technical effects can be achieved.

Example 8: in order to increase the separation speed of the blood sample, another differential pressure assembly 7 was added on the basis of example 1. The differential pressure assembly 7 comprises a negative pressure tube penetrating through the sampling hole 32, a piston rod 72 is coaxially arranged at a tube orifice of the negative pressure tube outside the sampling tube, the piston rod 72 is in sealing arrangement with a contact surface of the negative pressure tube, and the piston rod 72 and the negative pressure tube are in sliding fit along the length direction of the negative pressure tube, so that gas in the separation cavity 2 can be pumped through the piston rod 72, the pressure in the separation cavity 2 is reduced, the pressure difference exists between the separation cavity 2 and the collection cavity 1, and the separation rate of a blood sample is accelerated.

In this embodiment, the gas can be introduced into the collecting cavity 1 through the structure of the mirror image arranged piston rod 72, so that the pressure in the collecting cavity 1 is increased, and the effect of causing the pressure difference between the separating cavity 2 and the collecting cavity 1 can be achieved; to maximize the increase in separation rate, the pressure in the separation chamber 2 may be reduced while the pressure in the collection chamber 1 is increased.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

Claims

1. The split sampling tube is characterized by comprising the following components:

A collection chamber for collecting a blood sample;

2. The split sampling tube according to claim 1, wherein the two ends of the tube body of the sampling tube are open, and the sampling tube is bent to form two vertical sections, and the lumens of the two vertical sections are respectively a collecting cavity and a separating cavity, and the injection hole and the sampling hole are respectively arranged at the openings at the two ends of the tube body of the sampling tube.

3. The split sampling tube according to claim 2, wherein openable and closable covers are mounted at openings at both ends of the sampling tube body to close the openings of the sampling tube, and the injection hole and the sampling hole are formed in the two covers, respectively.

4. A split sampling tube according to claim 3, wherein a partition plate is arranged in the sampling tube to separate the collection chambers to form at least two groups of collection compartments, the partition plate also separates the collection chambers to form separation compartments corresponding to the number of collection compartments, and each collection compartment is separated from the corresponding separation compartment by a separation assembly; the injection holes arranged on the cover body correspond to the collection compartments in number, and each injection hole is communicated with each collection compartment in a one-to-one correspondence manner; the sampling holes arranged on the cover body correspond to the separation cells in number, and each sampling hole is communicated with each separation cell in a one-to-one correspondence.

5. The split sampling tube of claim 2, wherein the body of the sampling tube is U-shaped or V-shaped or L-shaped.

6. The split sampling tube of claim 1, wherein the sampling tube is open on one side and the collection chamber and the separation chamber are in communication with the opening of the sampling tube after the lumen of the sampling tube is separated by the separation assembly; the opening of the sampling tube is closed by a cover body which can be opened and closed, and the injection hole and the sampling hole are both arranged on the cover body.

7. The split sampling tube of claim 6, wherein the separation assembly uniformly separates the lumens of the sampling tube in the vertical direction to form a collection chamber and a separation chamber.

8. The split sampling tube of claim 6, wherein the separation assembly is in a cylindrical configuration with an open top, the separation assembly and the inner wall of the sampling tube enclose a ring cavity, and the ring cavity and the cylindrical cavity of the separation assembly form the collection cavity and the separation cavity, respectively.

9. The split sampling tube of claim 1, wherein the sampling tube is open on one side and the separation assembly separates the separation chamber from the opening of the sampling tube; the opening of the sampling tube is closed by a cover body which can be opened and closed, the injection hole is arranged on the cover body, and the sampling hole is arranged on the tube body of the sampling tube.

10. The split sampling tube of claim 9, wherein the separation assembly is horizontally disposed such that the lumen of the sampling tube is layered up and down, the upper lumen of the sampling tube being the collection lumen and the lower lumen of the sampling tube being the separation lumen.

11. The split sampling tube of any one of claims 1 to 10, further comprising a pressure differential assembly mounted to the sampling tube for applying positive pressure to the collection chamber and/or negative pressure to the separation chamber.

12. The split sampling tube of claim 11, wherein the pressure differential assembly comprises a negative pressure tube in communication with the separation chamber after passing through the sampling orifice, the negative pressure tube in communication with the negative pressure pump through a negative pressure valve to draw gas from the separation chamber.

13. The split sampling tube of claim 11, wherein the pressure differential assembly comprises a negative pressure tube which is communicated with the separation chamber after passing through the sampling hole, a piston rod is coaxially arranged in the negative pressure tube, the contact surface of the piston rod and the negative pressure tube is in sealing arrangement, and the piston rod and the negative pressure tube are in sliding fit along the length direction to suck the gas in the separation chamber.

14. The split sampling tube of any one of claims 1 to 10, wherein the bottom of the sampling tube is planar for smooth placement of the tube body.

15. The split sampling tube of any one of claims 1 to 10, wherein the bottom of the sampling tube is non-planar and the bottom of the sampling tube is secured within a mounting seat to facilitate smooth placement of the sampling tube.

16. The split sampling tube according to any one of claims 1 to 10, wherein the separation component is one of a platelet filter, a filter membrane, and a separation gel.

17. The split sampling tube of claim 16, wherein the separation assembly further comprises a carrier plate for carrying the separation assembly.

18. The split sampling tube of any one of claims 1 to 10, wherein the cover is a rigid cover that is threadedly engaged with the opening of the sampling tube or a flexible cover through which the needle can pass.