Sample collection device

Abstract

The utility model provides a sample collecting device, which relates to sample collecting equipment and comprises a sample accommodating tube, and two ends of the sample accommodating tube are respectively connected with a first tube cover and a tube cap; the first tube cover is attached to the top wall of the sample accommodating tube, and a first sealing surface is formed by the attaching surfaces of the first tube cover and the sample accommodating tube; the pipe cap is attached to the bottom wall of the sample containing pipe, and the attaching face of the pipe cap and the sample containing pipe forms a second sealing face; a filter cartridge is arranged in the sample containing pipe and moves in the sample containing pipe, and the axis of the filter cartridge is parallel to or coincides with the axis of the sample containing pipe; a blocking plate is arranged at one end, close to the first pipe cover, of the filter cartridge and is used for blocking a top opening of the filter cartridge; a sampling opening is formed in the end, away from the first pipe cover, of the filter cartridge and used for allowing a suction head to be inserted. The mixed liquid is filtered through the filter cartridge, so that mucus and particles in the mixed liquid are intercepted, and the problem that the mucus and particles in the mixed liquid block the suction head is solved.

Description

Technical Field

[0001] This utility model relates to sample collection equipment, specifically to a sample collection device. Background Technology

[0002] Different biological samples (such as blood, saliva, sputum, and stool) contain different types and concentrations of mucus and particulate matter, which may exist in the sample in the form of suspension or sediment. When processing samples in a clinical or laboratory setting, samples are drawn from the sample container using a pipette tip. During aspiration, mucus and particulate matter in the mixture are drawn into the pipette tip. The drawn-in mucus and particulate matter accumulate in the narrow channel of the pipette tip, causing the pipette tip to become clogged. Utility Model Content

[0003] The purpose of this invention is to provide a sample collection device, and the technical problem to be solved is that during liquid aspiration, the mucus and particulate matter in the mixture clog the pipette tip.

[0004] This utility model is achieved through the following technical solution:

[0005] A sample collection device includes a sample receiving tube, with a first tube cap and a tube lid connected to its two ends respectively; the first tube cap fits against the top wall of the sample receiving tube, and the contact surface between the first tube cap and the sample receiving tube forms a first sealing surface; the tube lid fits against the bottom wall of the sample receiving tube, and the contact surface between the tube lid and the sample receiving tube forms a second sealing surface.

[0006] The sample container tube is equipped with a filter cylinder, which moves within the sample container tube. The axis of the filter cylinder is parallel to or coincides with the axis of the sample container tube.

[0007] The filter cartridge is provided with a sealing plate at one end near the first tube cover, which is used to seal the top opening of the filter cartridge; the filter cartridge is provided with a sampling port at one end away from the first tube cover, which is used to insert a pipette tip.

[0008] The filtration process using the aforementioned filter cartridge is as follows: Initially, the sample container is placed upright (top wall facing up, bottom wall facing down, bottom wall in contact with the cap). At this time, the mixture in the sample container is separated from the top opening of the filter cartridge by a sealing plate, preventing the mixture from flowing directly into the filter cartridge without filtration. During filtration, the sample container is inverted (top wall facing down, bottom wall facing up, top wall in contact with the first cap). The mixture in the sample container then flows into the filter cartridge after being filtered through the side wall. Mucus and particulate matter in the mixture are trapped by the side wall of the filter cartridge, while the clean liquid flows into the filter cartridge through the side wall. When sampling, the cap is unscrewed, the pipette tip is inserted into the sampling port, and the mixture in the filter cartridge is drawn up. This filter cartridge reduces the probability of mucus and particulate matter entering the pipette tip, thereby reducing the risk of pipette tip clogging.

[0009] Furthermore, it also includes a sample guide tube, which includes a first tube section and a second tube section, wherein the first tube section is connected to the second tube section;

[0010] The first tube portion is fitted inside the sample receiving tube, and the second tube portion extends out of the sample receiving tube;

[0011] Moving away from the first tube section, the diameter of the second tube section gradually increases; the maximum diameter of the second tube section is greater than the diameter of the sample containing tube.

[0012] The aforementioned sample guide tube facilitates sample collection by guiding the sample into the sample receiving tube. The sample guide tube consists of a first tube section and a second tube section, which can be cast using an integral molding mold. The first tube section is fitted inside the sample receiving tube to ensure a tight connection between the sample guide tube and the sample receiving tube, preventing shaking or displacement during operation. The second tube section extends out of the sample receiving tube, forming a gradually increasing tube diameter design, which helps to collect the sample.

[0013] Furthermore, the end wall of the first pipe section away from the second pipe section is fitted with the sealing plate, and the mating surfaces of the first pipe section and the sealing plate form a third sealing surface.

[0014] During the sample testing process, the sample must first be collected using the sample guide tube, and then the sample guide tube is removed to test the collected sample. When collecting the sample, the end wall of the first tube is tightly fitted with the sealing plate to form a third sealing surface. The third sealing surface can effectively prevent the sample in the sample guide tube from leaking into the sample container tube in advance, which would affect the subsequent mixing uniformity.

[0015] Furthermore, the sample collection device also includes a second cap;

[0016] The aforementioned sample guide tube also includes a third tube section, the two ends of which are respectively connected to the second tube section and the second tube cap.

[0017] The end wall of the third tube section away from the second tube section is fitted with the second tube cap, and the fitting surfaces of the third tube section and the second tube cap form a fourth sealing surface.

[0018] The third tube on the sample guide tube is used to connect to the second tube cap, which covers the open end of the third tube, ensuring that the inside of the sample guide tube will not be contaminated or damaged when it is not in use, thus increasing the overall cleanliness and safety of the sample collection device. The fourth sealing surface prevents external contaminants from entering the sample guide tube, ensuring the purity and safety of the sample. When the sample is stored in the sample guide tube, the fourth sealing surface can prevent the evaporation and leakage of the sample, thereby maintaining the quality and stability of the sample and preventing leakage of the sample during mixing.

[0019] Furthermore, a sealed cavity is formed by the sample guide tube, the second tube cap, and the sealing plate, and the sealed cavity is filled with preservation fluid.

[0020] Preservative solution is placed in the sealed cavity to ensure immediate protection and stability of the sample after collection. The preservative solution prevents the degradation of bioactive substances in the sample, maintaining its original state and thus improving the accuracy and reliability of subsequent analyses. Because the sealed cavity is tightly enclosed by the sample guide tube, the second cap, and the sealing plate, a completely closed environment is formed. This effectively prevents the entry of external contaminants, thereby reducing the risk of sample contamination.

[0021] Furthermore, the above-mentioned sample receiving tube includes a first receiving tube portion and a second receiving tube portion, and the first receiving tube portion and the second receiving tube portion are connected.

[0022] The diameter of the first receiving tube is smaller than the diameter of the second receiving tube.

[0023] The aforementioned cap is connected to the first receiving tube section;

[0024] The first tube cap is connected to the second receiving tube section.

[0025] Sample collection and processing are carried out in the second accommodating tube. The filter cartridge enters the second accommodating tube after the sample accommodating tube is inverted to perform the filtration operation. The second accommodating tube has a large diameter, which not only provides more space for the mixture but also allows for the movement of the filter cartridge.

[0026] Furthermore, when the first tube portion is attached to the sealing plate, the filter cartridge is fixed to the first receiving tube portion.

[0027] Ensure that the filter cartridge is positioned at the bottom during sample collection, leaving space for the second receiving tube to accommodate the sample. At this point, the position of the filter cartridge is fixed, ensuring the sealing effect of the third sealing surface and preventing the sample and preservation solution in the sample guide tube from leaking into the sample receiving tube, affecting the homogeneity of the mixture, and thus leading to inaccurate test results.

[0028] Furthermore, the second receiving tube portion is provided with internal threads, and the first tube cap and the first tube portion are provided with external threads.

[0029] The internal thread on the second receiving tube is used to fit the external thread of the first tube cap and the first tube.

[0030] The external threads of the first tube cap and the first tube section are adapted to the internal threads on the second accommodating tube section, reducing the design of a connecting component and lowering the processing difficulty.

[0031] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0032] The filtration process using the aforementioned filter cartridge is as follows: Initially, the sample container is placed upright (top wall facing up, bottom wall facing down, bottom wall in contact with the cap). At this time, the mixture in the sample container is separated from the top opening of the filter cartridge by a sealing plate, preventing the mixture from flowing directly into the filter cartridge without filtration. During filtration, the sample container is inverted (top wall facing down, bottom wall facing up, top wall in contact with the first cap). The mixture in the sample container then flows into the filter cartridge after being filtered through the side wall. Mucus and particulate matter in the mixture are trapped by the side wall of the filter cartridge, while the clean liquid flows into the filter cartridge through the side wall. When sampling, the cap is unscrewed, the pipette tip is inserted into the sampling port, and the mixture in the filter cartridge is drawn up. This filter cartridge reduces the probability of mucus and particulate matter entering the pipette tip, thereby reducing the risk of pipette tip clogging. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0034] Figure 1 This is a disassembled diagram of the sample collection device before sample collection.

[0035] Figure 2 This is a schematic diagram of the sample collection device before sample collection.

[0036] Figure 3 A half-sectional view of the sample collection device before sample collection;

[0037] Figure 4 for Figure 3 A magnified view of part A in the image;

[0038] Figure 5 for Figure 3 A magnified view of part B in the image;

[0039] Figure 6 This is a half-sectional view of the sample collection device after sample collection.

[0040] Figure 7 for Figure 6 A magnified view of part C;

[0041] Figure 8 for Figure 6 A magnified view of part D;

[0042] Figure 9This is a schematic diagram of the sample collection device in use.

[0043] The attached diagram shows the markings and corresponding component names:

[0044] 1. Sample container tube; 11. First container tube section; 12. Second container tube section; 2. Sample guide tube; 21. First tube section; 22. Second tube section; 23. Third tube section; 3. Filter cartridge; 31. Sealing plate; 32. Sampling port; 4. Tube cap; 5. First tube cap; 6. Second tube cap. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0046] Using a sample container with a movable filter cartridge during liquid aspiration is significantly beneficial in solving the problem of mucus and particulate matter clogging the pipette tip in the mixture.

[0047] Example 1

[0048] Combination Figures 6 to 8 This embodiment 1 provides a sample collection device, including a sample receiving tube 1, with a first tube cap 5 and a tube cap 4 connected to both ends of the sample receiving tube 1 respectively; the first tube cap 5 fits against the top wall of the sample receiving tube 1, and the fitting surface of the first tube cap 5 and the sample receiving tube 1 forms a first sealing surface; the tube cap 4 fits against the bottom wall of the sample receiving tube 1, and the fitting surface of the tube cap 4 and the sample receiving tube 1 forms a second sealing surface.

[0049] The sample containing tube 1 is provided with a filter cylinder 3, which moves within the sample containing tube 1. The axis of the filter cylinder 3 is parallel to or coincides with the axis of the sample containing tube 1.

[0050] The filter cylinder 3 is provided with a sealing plate 31 at one end near the first tube cover 5. The sealing plate 31 is used to seal the top opening of the filter cylinder 3. The filter cylinder 3 is provided with a sampling port 32 at one end away from the first tube cover 5. The sampling port 32 is used to insert a suction tip.

[0051] The mixture is filtered through the filter cartridge 3 as follows: Initially, the sample container tube 1 is in an upright position (i.e., top wall facing up, bottom wall facing down, bottom wall in contact with cap 4). At this time, the mixture in the sample container tube 1 is separated from the top opening of the filter cartridge 3 by the sealing plate 31, preventing the mixture from flowing directly into the filter cartridge 3 without filtration. During filtration, the sample container tube 1 is inverted (i.e., top wall facing down, bottom wall facing up, top wall in contact with first cap 5). At this time, the mixture in the sample container tube 1 flows into the filter cartridge 3 after being filtered through the side wall of the filter cartridge 3. The mucus and particulate matter in the mixture are intercepted by the side wall of the filter cartridge 3, while the clean liquid flows into the filter cartridge 3 through the side wall of the filter cartridge 3. When sampling, the cap 4 is unscrewed and the pipette tip is inserted into the sampling port 32 to draw the mixture in the filter cartridge 3. The filter cartridge 3 reduces the probability of mucus and particulate matter entering the pipette tip, thereby reducing the risk of pipette tip clogging.

[0052] Example 2

[0053] Based on Example 1, combined with Figures 1 to 5 It also includes a sample guide tube 2, which includes a first tube section 21 and a second tube section 22, wherein the first tube section 21 is connected to the second tube section 22.

[0054] The first tube 21 is threaded into the sample receiving tube 1 to achieve a detachable connection of the sample guide tube 2. When the mixture is tested using the testing equipment, the sample guide tube 2 is removed to reduce the volume of the sample collection device and make it meet the volume standard of the testing equipment; the second tube 22 extends out of the sample receiving tube 1.

[0055] Moving away from the first tube section 21, the diameter of the second tube section 22 gradually increases; the maximum diameter of the second tube section 22 is greater than the diameter of the sample accommodating tube 1.

[0056] The aforementioned sample guide tube 2 facilitates sample collection by guiding the sample into the sample receiving tube 1. The sample guide tube 2 consists of a first tube section 21 and a second tube section 22, which can be cast using an integral molding mold. The first tube section 21 is fitted inside the sample receiving tube 1 to ensure a tight connection between the sample guide tube 2 and the sample receiving tube 1, preventing shaking or displacement during operation. The second tube section 22 extends out of the sample receiving tube 1, forming a gradually increasing tube diameter design, which helps to collect the sample.

[0057] Example 3

[0058] Based on Example 2, combined with Figure 2 and Figure 3 The end wall of the first tube 21 away from the second tube 22 is in contact with the sealing plate 31, and the contact surface of the first tube 21 and the sealing plate 31 forms a third sealing surface.

[0059] During the sample testing process, the sample must first be collected using the sample guide tube 2, and then the sample is tested after removing the sample guide tube 2. When collecting the sample, the end wall of the first tube 21 is tightly fitted with the sealing plate 31 to form a third sealing surface. The third sealing surface can effectively prevent the sample in the sample guide tube 2 from leaking into the sample container tube 1 in advance. Subsequently, the sample needs to be mixed with the preservation solution to obtain a mixed solution. If the sample leaks into the sample container tube 1 in advance at this time, it will affect the uniformity of the mixing.

[0060] Example 4

[0061] Based on Example 3, combined with Figure 2 and Figure 4 The sample collection device also includes a second tube cap 6;

[0062] The sample guide tube 2 also includes a third tube section 23, the two ends of which are respectively connected to the second tube section 22 and the second tube cap 6; the first tube section 21, the second tube section 22 and the third tube section 23 can be integrally formed by cavity casting, and the third tube section 23 and the second tube cap 6 can be connected by threads, making it more convenient to open and close the second tube cap 6;

[0063] The end wall of the third tube section 23 away from the second tube section 22 is fitted with the second tube cap 6, and the fitting surfaces of the third tube section 23 and the second tube cap 6 form a fourth sealing surface.

[0064] The third tube portion 23 on the sample guide tube 2 is used to connect to the second tube cap 6. The second tube cap 6 is used to cover the open end of the third tube portion 23, ensuring that the inside of the sample guide tube 2 will not be contaminated or damaged when it is not in use, thus increasing the overall cleanliness and safety of the sample collection device. The fourth sealing surface prevents external contaminants from entering the inside of the sample guide tube 2, ensuring the purity and safety of the sample. When the sample is stored in the sample guide tube 2, the fourth sealing surface can prevent the evaporation and leakage of the sample, thereby maintaining the quality and stability of the sample and also avoiding leakage of the sample during mixing.

[0065] In a specific embodiment, the sample guide tube 2, the second tube cap 6, and the sealing plate 31 form a sealed cavity, which is filled with a preservation solution.

[0066] By designing a sealed cavity and pre-filling it with preservation solution, the sample collection process becomes more convenient. Operators no longer need to manually add preservation solution after collection, reducing operation steps and time, and improving work efficiency. At the same time, due to the design of the sealed cavity, the sample can be preserved immediately after collection without additional processing, further simplifying the operation process.

[0067] The aforementioned sealed cavity is filled with a preservation solution to ensure immediate protection and stability of the sample after collection. The preservation solution prevents the degradation of bioactive substances in the sample, maintaining its original state and thus improving the accuracy and reliability of subsequent analyses. Because the sealed cavity is tightly enclosed by the sample guide tube 2, the second cap 6, and the sealing plate 31, a completely closed environment is formed. This effectively prevents the entry of external contaminants, thereby reducing the risk of sample contamination.

[0068] Example 5

[0069] Based on Example 2, combined with Figure 1 The sample receiving tube 1 mentioned above includes a first receiving tube section 11 and a second receiving tube section 12, and the first receiving tube section 11 and the second receiving tube section 12 are connected.

[0070] The diameter of the first receiving tube section 11 is smaller than the diameter of the second receiving tube section 12;

[0071] The aforementioned cap 4 is connected to the first receiving tube section 11;

[0072] The first tube cap 5 is connected to the second receiving tube 12.

[0073] Sample collection and processing are carried out in the second receiving tube section 12. The filter cartridge 3 enters the second receiving tube section 12 after the sample receiving tube 1 is inverted to realize the filtration operation. The second receiving tube section 12 is set with a large diameter not only to provide a larger space for the mixture, but also to leave room for the movement of the filter cartridge 3.

[0074] In a specific embodiment, when the first tube 21 is attached to the sealing plate 31, the filter cylinder 3 is fixed to the first receiving tube 11.

[0075] The fitting operation between the first tube 21 and the sealing plate 31 simultaneously achieves the fixation of the filter cartridge 3, eliminating the need for additional fixation of the filter cartridge 3 and simplifying the operation process.

[0076] By fixing the filter cartridge 3, the position of the filter cartridge 3 is kept stable during the sample collection process, ensuring the sealing effect of the third sealing surface. At the same time, the sealing plate 31 blocks the top opening of the filter cartridge 3, preventing the sample and preservation solution in the sample guide tube 2 from leaking into the sample container tube 1, affecting the uniformity of the mixture, and thus causing inaccurate test results.

[0077] Fixing the filter cartridge 3 to the first receiving tube 11 can enhance the structural stability and reliability of the entire sample collection device. During collection and transportation, even if vibration or impact occurs, the filter cartridge 3 can remain fixed and will not fall off or shift, thereby ensuring the safety and integrity of the preservation solution.

[0078] In a specific embodiment, the second receiving tube portion 12 is provided with internal threads, and the first tube cap 5 and the first tube portion 21 are provided with external threads;

[0079] The internal thread on the second receiving tube 12 is used to adapt to the external thread of the first tube cap 5 and the first tube 21.

[0080] The threaded connection makes the installation and removal of the first pipe cover 5 and the first pipe section 21 simple and quick, improving the work efficiency of the operators; the external threads of the first pipe cover 5 and the first pipe section 21 are adapted to the internal threads on the second accommodating pipe section 12, reducing the design of a connecting component and reducing the processing difficulty.

[0081] The specific usage of this sample collection device, combined with Figure 9 :

[0082] (1) Before collection, the structure of the sample collection device is as follows: the first receiving tube section 11 of the sample receiving tube 1 is connected to the tube cap 4, the first tube section 21 of the sample guide tube 2 is sleeved in the second receiving tube section 12 of the sample receiving tube 1, the bottom wall of the first tube section 21 is attached to the sealing plate 31, the top wall of the third tube section 23 is attached to the second tube cap 6, and the sealed cavity is filled with preservation liquid.

[0083] (2) Remove the second tube cap 6 and add the sample;

[0084] (3) Cover the second tube cap 6 and tighten it. Shake it up and down to use the flushing of the preservation solution to make the sample stuck to the inner wall of the sample guide tube 2 slide down and mix the sample and the preservation solution.

[0085] (4) Remove the sample guide tube 2 and the second tube cap 6, and cover the second receiving tube part 12 of the sample receiving tube 1 with the first tube cap 5. The top wall of the sample receiving tube 1 is in contact with the first tube cap 5, and the bottom wall of the sample receiving tube 1 is in contact with the tube cap 4.

[0086] (5) Invert the sample container tube 1, and the filter tube 3 slides down to the second container tube 12 and contacts the first tube cap 5. The mixture is filtered through the micropores on the side wall of the filter tube 3 to remove the mucus and particulate matter in the mixture. The filtered mixture is concentrated in the filter tube 3.

[0087] (6) Remove the cap 4, insert the pipette tip into the sampling port 32, and let the end of the pipette tip enter the filter tube 3 to draw up the mixture.

[0088] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sample collection device, characterized in that, The sample container includes a sample receiving tube (1), with a first tube cap (5) and a tube cap (4) connected to its two ends respectively. The first tube cap (5) fits against the top wall of the sample receiving tube (1), and the contact surface between the first tube cap (5) and the sample receiving tube (1) forms a first sealing surface. The tube cap (4) fits against the bottom wall of the sample receiving tube (1), and the contact surface between the tube cap (4) and the sample receiving tube (1) forms a second sealing surface. The sample containing tube (1) is provided with a filter cylinder (3), which moves within the sample containing tube (1). The axis of the filter cylinder (3) is parallel to or coincides with the axis of the sample containing tube (1). The filter cylinder (3) has a sealing plate (31) at one end near the first tube cap (5), which is used to seal the top opening of the filter cylinder (3); the filter cylinder (3) has a sampling port (32) at one end away from the first tube cap (5), which is used to insert a suction head.

2. The sample collection device according to claim 1, characterized in that, It also includes a sample guide tube (2), which includes a first tube section (21) and a second tube section (22), wherein the first tube section (21) is connected to the second tube section (22); The first tube (21) is fitted inside the sample receiving tube (1), and the second tube (22) extends out of the sample receiving tube (1); As the second tube (22) moves away from the first tube (21), its diameter gradually increases; the maximum diameter of the second tube (22) is greater than that of the sample containing tube (1).

3. The sample collection device according to claim 2, characterized in that, The end wall of the first tube (21) away from the second tube (22) is fitted with the sealing plate (31), and the mating surfaces of the first tube (21) and the sealing plate (31) form a third sealing surface.

4. A sample collection device according to claim 3, characterized in that, The sample collection device also includes a second tube cap (6); The sample guide tube (2) also includes a third tube section (23), the two ends of which are respectively connected to the second tube section (22) and the second tube cap (6); The end wall of the third tube (23) away from the second tube (22) is fitted with the second tube cap (6), and the fitting surfaces of the third tube (23) and the second tube cap (6) form a fourth sealing surface.

5. A sample collection device according to claim 4, characterized in that, A sealed cavity is formed by the sample guide tube (2), the second tube cap (6) and the sealing plate (31), and the sealed cavity is filled with preservation liquid.

6. A sample collection device according to claim 2, characterized in that, The sample receiving tube (1) includes a first receiving tube section (11) and a second receiving tube section (12), and the first receiving tube section (11) and the second receiving tube section (12) are connected. The diameter of the first receiving tube (11) is smaller than the diameter of the second receiving tube (12); The cap (4) is connected to the first receiving tube (11); The first tube cap (5) is connected to the second receiving tube (12).

7. A sample collection device according to claim 6, characterized in that, When the first tube (21) is in contact with the sealing plate (31), the filter cylinder (3) is fixed in the first receiving tube (11).

8. A sample collection device according to claim 6, characterized in that, The second receiving tube (12) is provided with internal threads, and the first tube cap (5) and the first tube (21) are provided with external threads; The internal thread on the second receiving tube (12) is used to fit the external thread of the first tube cap (5) and the first tube (21).

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