Liquid-based cell filtering centrifuge tube device

Abstract

The utility model discloses a liquid-based cell filtering centrifuge tube device, and relates to the field of centrifuge tube devices. The device comprises a centrifugal tube body, a filter tube inserted into the centrifugal tube body and a tube cover in threaded connection with the top end face of the centrifugal tube body. According to the liquid-based cell filtering centrifuge tube device, the filter pressing mechanism is arranged at the tube cover of the centrifuge tube body, so that liquid-based cell liquid in a sample in the filter tube can be fully filtered into the centrifuge tube body under the gravity action of the filter pressing mechanism, and the liquid-based cell liquid can be fully filtered into the centrifuge tube body through the limiting mechanism arranged between the tube cover and the filter pressing mechanism. And the pipe cover and the filter pressing mechanism are connected in a limiting manner, so that the filter pressing mechanism is prevented from completely entering the filter pipe, and the filter pressing mechanism is prevented from being conveniently taken.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge tube devices, in particular to a liquid-based cell filtering centrifuge tube device. Background Art

[0002] Before screening for liquid-based cells, it is necessary to collect samples first and mix them with the test liquid. The sample liquid is then filtered and extracted through a combined centrifuge tube and filter tube. The extracted sample liquid is collected inside the centrifuge tube and then tested through a detection device to determine whether liquid-based cells are present.

[0003] For samples with adsorptive properties, such as herbal samples, after being mixed with the test liquid, a portion of the liquid will be adsorbed inside the herbal samples. Therefore, when the sample liquid is filtered and extracted through a combined centrifuge tube and filter tube, a portion of the sample liquid is filtered inside the centrifuge tube under the action of centrifugation, while the sample liquid adsorbed by the herbal sample cannot be filtered inside the centrifuge tube under the action of centrifugation, resulting in incomplete collection of the sample liquid, causing the total amount of the test sample to fail to meet the standard. To address the above problems, we propose a liquid-based cell filtration centrifuge tube device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a centrifuge tube device, which solves the problem that, after the herbal sample is mixed with the detection liquid, a portion of the liquid will be absorbed inside the herbal sample. Therefore, when the sample liquid is filtered and extracted through the combined centrifuge tube and filter tube, incomplete collection of the sample liquid will occur, resulting in insufficient amount of detection sample.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a liquid-based cell filtration centrifuge tube device, comprising a centrifuge tube body, a filter tube inserted and arranged inside the centrifuge tube body, and a tube cover threadedly connected to the top end surface of the centrifuge tube body, wherein a filter press mechanism is arranged inside the filter tube, and the filter press mechanism comprises:

[0006] A gravity block is inserted and arranged inside the filter tube;

[0007] A connecting rod, which is fixedly connected to the gravity block, one end of which passes through the pipe cover and extends to the top of the pipe cover;

[0008] The limiting mechanism is used to limit the moving path of the gravity block relative to the centrifuge tube body.

[0009] Preferably, the limiting mechanism comprises:

[0010] A mounting groove is provided on the top end surface of the pipe cover;

[0011] The limit block and the connecting block are fixedly connected, the limit block and the connecting block are limitedly slid inside the installation groove, and one end of the limit block is limitedly inserted inside the connecting rod;

[0012] The arc block is slidably arranged inside the installation groove, and the setting position of the limit block relative to the connecting rod is limited by the clamping connection between the arc block and the connecting block.

[0013] Preferably, a limiting groove is provided on the outer wall of the connecting rod, and one end of the limiting block is inserted and arranged inside the limiting groove.

[0014] Preferably, the inner wall of the installation groove is provided with a groove for limiting the sliding of the arc block, and one end of the arc block is inserted and arranged inside the connecting block.

[0015] Preferably, a telescopic rod is provided between the inner wall of the groove and the outer wall of the arc-shaped block, and a spring is provided on the outer wall of the telescopic rod.

[0016] Preferably, a push plate is provided inside the connecting block, and one end of the arc block located inside the connecting block abuts against an outer wall of the push plate.

[0017] Preferably, the connection block is internally rotatably connected with a bidirectional threaded rod for adjusting the positions of the two groups of push plates.

[0018] The utility model discloses a liquid-based cell filtration centrifuge tube device, which has the following beneficial effects: the liquid-based cell filtration centrifuge tube device is provided with a filter press mechanism at the tube cover of the centrifuge tube body, so that under the gravity of the filter press mechanism, the liquid-based cell fluid in the sample inside the filter tube can be fully filtered into the inside of the centrifuge tube body, and the limiting mechanism provided between the tube cover and the filter press mechanism is ensured so that the downward movement path of the filter press mechanism will not be offset, and a limiting connection is performed between the tube cover and the filter press mechanism to prevent the filter press mechanism from completely entering the inside of the filter tube, which affects the convenient taking of the filter press mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is an exploded view of the centrifuge tube and filter tube structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the filter tube and gravity block of the utility model;

[0023] Figure 4 For this utility model Figure 1 A magnified view of the structure at center;

[0024] Figure 5 This is a cross-sectional view of the internal structure of the pipe cover of the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the limit block, the connecting block and the arc block of the utility model.

[0026] In the figure, 1, centrifuge tube body; 101, tube cover; 2, filter tube; 301, gravity block; 302, connecting rod; 303, limiting mechanism; 3031, limiting groove; 3032, mounting groove; 3033, limiting block; 3034, connecting block; 3035, groove; 3036, arc block; 3037, telescopic rod; 3038, spring; 304, bidirectional threaded rod; 305, push plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The embodiment of the present application provides a centrifuge tube device to solve the problem that, for herbal samples, after being mixed with the detection liquid, a portion of the liquid will be absorbed inside the herbal sample. Therefore, when the sample liquid is filtered and extracted through the combined centrifuge tube and filter tube, incomplete collection of the sample liquid will occur, resulting in insufficient amount of detection sample, thereby achieving pressure filtration of the sample inside the filter tube.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The utility model embodiment discloses a liquid-based cell filtering centrifuge tube device.

[0031] According to the attached Figure 1-6As shown, it includes a centrifuge tube body 1, a filter tube 2 inserted and arranged inside the centrifuge tube body 1, and a tube cover 101 threadedly connected to the top end face of the centrifuge tube body 1. The length of the filter tube 2 is less than the length of the centrifuge tube body 1. The sample containing the liquid-based cell fluid is placed inside the filter tube 2, and the bottom end face of the filter tube 2 does not contact the inner bottom of the centrifuge tube body 1. At this time, under the action of centrifugation, the liquid-based cell fluid is separated from the sample, that is, the liquid-based cell fluid is filtered into the inside of the centrifuge tube body 1. When it is completed, the tube cover 101 is rotated to expose the top end face of the centrifuge tube body 1, and then the filter tube 2 is directly taken away, so that the filtered liquid-based cell fluid is stored in the inside of the centrifuge tube body 1.

[0032] A filter press mechanism is arranged inside the filter tube 2. Through the filter press mechanism, the liquid-based cell fluid in the sample can be fully filtered into the inside of the centrifuge tube body 1 under the action of gravity. The filter press mechanism includes a gravity block 301. The gravity block 301 is inserted and arranged inside the filter tube 2. The connecting rod 302 is fixedly connected to the gravity block 301. One end of the connecting rod 302 passes through the tube cover 101 and extends to the top of the tube cover 101.

[0033] The limiting mechanism 303 is used to limit the moving path of the gravity block 301 relative to the centrifuge tube body 1, that is, when the gravity block 301 moves downward, the downward moving path of the gravity block 301 will not be offset, and a limiting connection is performed between the tube cover 101 and the filter press mechanism to prevent the gravity block 301 and the connecting rod 302 set at the gravity block 301 from entering the interior of the filter tube 2. The limiting mechanism 303 includes a mounting groove 3032, which is opened on the top end surface of the tube cover 101, and a limiting block 3033 and a connecting block 3034 are fixedly connected. The limiting block 3033 and the connecting block 3034 are limitedly slid inside the mounting groove 3032, and one end of the limiting block 3033 is limitedly inserted into the interior of the connecting rod 302. The outer wall of the connecting rod 302 is opened with a limiting groove 3031, and one end of the limiting block 3033 is inserted into the interior of the limiting groove 3031.

[0034] The inner wall of the mounting groove 3032 is provided with a groove 3035 for limiting the sliding of the arc block 3036. One end of the arc block 3036 is inserted into the interior of the connecting block 3034. The setting position of the limiting block 3033 relative to the connecting rod 302 is limited by the snap connection between the arc block 3036 and the connecting block 3034. A telescopic rod 3037 is provided between the inner wall of the groove 3035 and the outer wall of the arc block 3036. The outer wall of the telescopic rod 3037 is provided with a spring 3038.

[0035] A push plate 305 is provided inside the connecting block 3034, and one end of the arc block 3036 located inside the connecting block 3034 is against the outer wall of the push plate 305. The internal rotation connection of the connecting block 3034 is used to adjust the position of the two groups of push plates 305. The outer wall of the two-way threaded rod 304 is provided with two groups of thread grooves, and the groove directions of the two groups of thread grooves are opposite, so that when the two-way threaded rod 304 is rotated, the two groups of push plates 305 provided on the outer wall of the two-way threaded rod 304 move to both sides or to the middle at the same time, thereby achieving the purpose of unlocking the arc block 3036 and the connecting block 3034.

[0036] The liquid-based cell filtration centrifuge tube device is provided with a filter press mechanism at the tube cover 101 of the centrifuge tube body 1, so that under the action of gravity of the filter press mechanism, the liquid-based cell fluid in the sample inside the filter tube 2 can be fully filtered into the inside of the centrifuge tube body 1, and the limiting mechanism 303 provided between the tube cover 101 and the filter press mechanism is ensured that the downward movement path of the filter press mechanism will not be offset, and a limiting connection is performed between the tube cover 101 and the filter press mechanism to prevent the filter press mechanism from completely entering the inside of the filter tube 2, which affects the convenient removal of the filter press mechanism.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid-based cell filtration centrifuge tube device, comprising a centrifuge tube body (1), a filter tube (2) inserted into the centrifuge tube body (1), and a tube cover (101) threadedly connected to the top end surface of the centrifuge tube body (1), characterized in that: A filter press mechanism is arranged inside the filter tube (2), and the filter press mechanism comprises: A gravity block (301) which is inserted and arranged inside the filter tube (2); A connecting rod (302) fixedly connected to the gravity block (301), one end of the connecting rod (302) passing through the pipe cover (101) and extending to the top of the pipe cover (101); The limiting mechanism (303) is used to limit the moving path of the gravity block (301) relative to the centrifuge tube body (1).

2. A liquid-based cell filtration centrifuge tube device according to claim 1, characterized in that: The limiting mechanism (303) comprises: A mounting groove (3032) is provided on the top end surface of the pipe cover (101); The limit block (3033) and the connecting block (3034) are fixedly connected, the limit block (3033) and the connecting block (3034) are limitedly slid inside the installation groove (3032), and one end of the limit block (3033) is limitedly inserted inside the connecting rod (302); The arc block (3036) is slidably disposed inside the mounting groove (3032), and the setting position of the limit block (3033) relative to the connecting rod (302) is limited by the snap connection between the arc block (3036) and the connecting block (3034).

3. A liquid-based cell filtration centrifuge tube device according to claim 2, characterized in that: The outer wall of the connecting rod (302) is provided with a limiting groove (3031), and one end of the limiting block (3033) is inserted into the limiting groove (3031).

4. A liquid-based cell filtration centrifuge tube device according to claim 3, characterized in that: The inner wall of the installation groove (3032) is provided with a groove (3035) for limiting the sliding of the arc block (3036), and one end of the arc block (3036) is inserted into the interior of the connection block (3034).

5. A liquid-based cell filtration centrifuge tube device according to claim 4, characterized in that: A telescopic rod (3037) is provided between the inner wall of the groove (3035) and the outer wall of the arc-shaped block (3036), and a spring (3038) is provided on the outer wall of the telescopic rod (3037).

6. A liquid-based cell filtration centrifuge tube device according to claim 4, characterized in that: A push plate (305) is provided inside the connection block (3034), and one end of the arc block (3036) located inside the connection block (3034) abuts against the outer wall of the push plate (305).

7. A liquid-based cell filtration centrifuge tube device according to claim 6, characterized in that: The connection block (3034) is internally rotatably connected with a bidirectional threaded rod (304) for adjusting the positions of the two sets of push plates (305).

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