Animal cell extraction device

Abstract

The invention relates to the technical field of animal cell extraction, and discloses an animal cell extraction device which comprises a stainless steel frame, a screening device is arranged on the surface of the stainless steel frame, and the screening device comprises a first screen body, a second screen body, a third screen body and a fourth screen body which are fixed in the inner wall of the stainless steel frame. A first screen body, a second screen body, a third screen body and a fourth screen body with different hole diameters are arranged in the vibrating assembly, the cover body is rotated to drive the extending openings to switch the corresponding positions, the replacement requirement can be rapidly met, meanwhile, in the screening process, the position and the contact strength of the vibrating part in the vibrating assembly can be flexibly adjusted, vibration is efficiently transmitted to the screening position, adhesion cell agglomerates are rapidly vibrated and dispersed, and the screening efficiency is improved. The screening process is smoother, the spray washing assembly can spray a culture solution according to needs, the screen can be washed in the screening process, the screening assembly is matched with the vibration assembly to further reduce blockage of screen holes, meanwhile, a proper environment can be provided for cells, and the activity and integrity of the cells are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of animal cell extraction, and particularly to an animal cell extraction device. Background Art

[0002] Animal cell extraction is the process of obtaining cells from animal tissues, which is used in many fields such as cell culture, cell biology research, drug development, and cell therapy to deeply understand cell characteristics and functions and promote the development of related science and technology.

[0003] In animal cell extraction, cell sieves play an important role. A cell sieve is a tool for separating and screening cells, usually composed of a sieve mesh and a frame, which can separate cells in a cell suspension according to size, remove impurities, tissue fragments, etc., and obtain a relatively pure cell sample. First, the animal tissue is minced and then digested to disperse the cells in the tissue into single cells. At this time, the cell suspension may contain undigested tissue blocks, cell clusters, and other impurities. Then, the cell suspension is filtered through a cell sieve with an appropriate pore size. The cell sieve will intercept larger tissue fragments and cell clusters, while allowing single cells to pass through the sieve pores into the collection device, thereby realizing the separation of cells from impurities and obtaining a relatively pure animal cell suspension, providing high-quality cell samples for subsequent cell culture, cell biology research and other experiments.

[0004] In the prior art, most cell sieves usually adopt a fixed pore size design and can only screen cells of a single size. If different sizes need to be screened, different specifications of sieve meshes need to be frequently replaced. Moreover, during the cell screening process, due to the surface characteristics of cells or sample characteristics, cells are prone to adhesion and aggregation, forming cell clumps that block the pore channels of the sieve mesh, hindering the normal passage of the cell suspension, resulting in a sharp drop in screening efficiency and even interruption of the screening process. Operators need to spray culture medium with a syringe to dilute the sample and reduce the viscosity, and use tools to apply mechanical external force to push the cells on the sieve mesh surface to dredge the blocked pore channels, thus resulting in the problems of single overall function and inconvenient screening of the cell sieve.

[0005] Therefore, we propose an animal cell extraction device. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] Aiming at the deficiencies of the prior art, the present invention provides an animal cell extraction device, which solves the problems of single overall function and inconvenient screening of the existing cell sieve.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present invention is implemented through the following technical solutions: An animal cell extraction device includes a stainless-steel frame. A screening device is provided on the surface of the stainless-steel frame. The screening device includes a first sieve body, a second sieve body, a third sieve body, and a fourth sieve body fixed to the inner wall of the stainless-steel frame, all made of stainless steel. A cover body is provided above the stainless-steel frame. An installation column is rotatably connected to the inner wall of the stainless-steel frame, and the installation column is inserted into the inner wall of the cover body. A connection part is provided between the installation column and the cover body. An opening is formed on the surface of the cover body. A downward extension port is fixedly connected to the inner side of the cover body directly below the opening, and the lower part of the extension port contacts the surface of the bottom wall of the stainless-steel frame. A spraying and washing component and a vibration component are respectively provided on the surface of the cover body;

[0010] The vibration component includes a fixed ring fixed to the upper surface of the cover body. A movable seat is slidably connected to the surface of the fixed ring. A slider is slidably connected to the inner wall of the movable seat. A vibration part is fixedly connected to the lower surface of the slider. A control part is provided on the movable seat, and the control part can control the movement of the vibration part and position the movable seat;

[0011] The spraying and washing component includes a micro pump installed on the upper surface of the cover body. Its input end is connected to a suction pipe fitting, and the output end is fixed with a water inlet pipe. The other end of the water inlet pipe is installed with a spraying pipe. The spraying pipe includes an annular pipe and a plurality of nozzles. The annular pipe is fixed to the inner wall of the cover body, and the nozzles extend into the opening. Through the above components, by setting the screening device with four different aperture sieve bodies, namely the first sieve body, the second sieve body, the third sieve body, and the fourth sieve body, and driving the extension port to switch to the corresponding position by rotating the cover body, it meets the diverse experimental requirements and facilitates quickly meeting the replacement needs; while the vibration component cooperates with the vibration component to further reduce the blockage of the sieve holes, it can also provide a suitable environment for the cells, reduce the damage caused by the friction or extrusion of the cells and the sieve mesh during the screening process, and ensure the activity and integrity of the cells.

[0012] Preferably, the vibration part includes a rubber rod fixed to the lower surface of the slider. A micro vibrator is fixedly connected to the inner wall of the rubber rod, and the micro vibrator is close to the lower end of the rubber rod. Through the above components, the rubber rod is close to the first sieve body, the second sieve body, the third sieve body, or the fourth sieve body, and the micro vibrator at its lower end can efficiently transmit the vibration to the surface of the filter screen, quickly shaking off the adhered cell clusters or impurities on the sieve mesh, reducing the blockage of the sieve holes, ensuring the smoothness of the cell screening process, and improving the screening efficiency.

[0013] Preferably, the control part includes a first screw rod rotatably connected to the inner wall of the slider. The first screw rod is threadedly connected to the inner wall of the slider, and the inner wall of the moving seat is threadedly connected to a second screw rod. With the above components, when vibration is required, the first screw rod is rotated. The first screw rod drives the slider and the entire vibration part to move, so that the vibration part can be brought into contact with the first sieve body, the second sieve body, the third sieve body or the fourth sieve body, facilitating the control of the contact force. And after the moving seat is moved on the fixed ring and the position of the vibration part is adjusted, the second screw rod can be rotated. The second screw rod can be pressed against the fixed ring to play a positioning role.

[0014] Preferably, a gasket is fixedly connected to the lower end of the second screw rod, and the gasket is circularly arranged.

[0015] Preferably, the water extraction pipe component includes a threaded sleeve threadedly connected to the input end of the micro pump. One end of the threaded sleeve is fixedly connected to a hose. With the above components, during the water spraying process, the hose can be inserted into a container filled with a culture solution. Subsequently, the micro pump cooperates with the hose to perform suction and spray through a spray pipe, spraying on the first sieve body, the second sieve body, the third sieve body or the fourth sieve body, and cooperating with the vibration assembly to further reduce the clogging effect.

[0016] Preferably, the connecting part includes a threaded post fixed to the upper end of the mounting column. A threaded cap is rotatably connected to the upper surface of the cover body, and the threaded cap is threadedly connected to the threaded post. With the above components, after the cover body is inserted into the mounting column, the threaded cap can be rotated. The threaded cap can be connected to the threaded post to install the cover body on the mounting column, which is convenient for subsequent disassembly and easy for cleaning and maintenance.

[0017] Preferably, a positioning rod is slidably connected to the inner wall of the cover body. A plurality of positioning holes for the positioning rod to be inserted are formed on the surface of the stainless steel frame. A spring is sleeved on the surface of the positioning rod, and both ends of the spring are fixedly connected to the surface of the positioning rod and the cover body respectively. With the above components, when the cover body rotates in cooperation with the mounting column and the extension port is aligned with the corresponding screening position, the positioning rod is inserted into the inner wall of the corresponding positioning hole, and the spring improves the position stability of the positioning rod, thereby ensuring that the overall screening operation can be carried out stably.

[0018] Preferably, an identification component is arranged between the cover body and the stainless steel frame. The identification component includes a through hole formed on the surface of the cover body. Four marking blocks corresponding to the first sieve body, the second sieve body, the third sieve body and the fourth sieve body respectively are fixedly connected to the surface of the stainless steel frame. With the above components, when the through hole rotates to the upper part of the corresponding marking block, the operator can quickly find the required screening aperture.

[0019] Preferably, a placement assembly is provided below the stainless-steel frame. The placement assembly includes a connection shell located below the stainless-steel frame. A connection head is fixedly connected to the upper surface of the connection shell, and the connection head is threadedly connected to the inner wall of the stainless-steel frame. A plurality of placement ends in contact with the culture dish are fixedly connected to the inside of the connection shell. The diameters of the plurality of placement ends increase sequentially from the inside to the outside. Through the above components, culture dishes with different diameters can be placed on the placement ends with diameters increasing sequentially from the inside to the outside, thus facilitating the collection operation.

[0020] Preferably, the placement end includes a contact ring fixed to the inside of the connection shell. A limit ring is fixedly connected to the lower end of the contact ring. Through the above components, the contact ring can contact the upper end of the culture dish, and the limit ring can contact the inside of the culture dish, thereby playing a role in placement and limitation, facilitating the accurate collection of the screened cell samples, and reducing sample spillage or cross-contamination.

[0021] In summary, the technical effects and advantages of the present invention are as follows:

[0022] 1. In the present invention, by providing a screening device with four different pore-size sieves, namely sieve one, sieve two, sieve three, and sieve four, and driving the extension port to switch to the corresponding position by rotating the cover body, diverse experimental requirements are met, facilitating quick replacement. At the same time, during the screening process, the vibration part in the vibration assembly can flexibly adjust the position and contact force, efficiently transmitting the vibration to the screening location, quickly shaking loose the agglomerated cell masses, making the screening process smoother. The spraying and washing assembly can spray the culture medium as needed, wash the sieve mesh during the screening process, further reducing the blockage of the sieve pores while cooperating with the vibration assembly, and providing a suitable environment for the cells, reducing damage caused by friction or extrusion between the cells and the sieve mesh during the screening process, ensuring the activity and integrity of the cells, and realizing multi-functional operation.

[0023] 2. In the present invention, by providing a placement assembly, a plurality of placement ends with diameters increasing sequentially from the inside to the outside are adapted to culture dishes with different diameters. The contact ring in the placement ring can contact the upper end of the culture dish, and the limit ring can contact the inside of the culture dish, facilitating the accurate collection of the screened cell samples and reducing sample spillage or cross-contamination.

[0024] 3. In the present invention, the connection shell and the stainless-steel frame, as well as the cover body and the mounting post, can be disassembled, facilitating the thorough cleaning and disinfection of each component of the device, reducing the risk of residue and contamination, extending the service life of the device, and ensuring the accuracy and reliability of subsequent experiments.

[0025] 4. In the present invention, the cover body and the stainless-steel frame are positioned by cooperating with the positioning rod, spring, and positioning holes, ensuring the stable effect of the cover body and the extension port during the screening process.

[0026] 5. In the present invention, by providing an identification component, when the through-hole rotates to the position above the corresponding mark block, the operator can quickly determine the aperture of the sieve mesh currently in use, greatly improving the experimental efficiency.

[0027] 6. In the present invention, in addition, when the spraying and washing component sucks the culture solution, it can also suck water and then spray the water out to achieve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of an animal cell extraction device according to the present invention;

[0029] Figure 2 is an exploded schematic diagram of an animal cell extraction device according to the present invention;

[0030] Figure 3 is a schematic diagram of the structure at the cover body of an animal cell extraction device according to the present invention;

[0031] Figure 4 is a partially sectional schematic diagram of the cover body of an animal cell extraction device according to the present invention;

[0032] Figure 5 is a schematic diagram of the upward view structure at the cover body of an animal cell extraction device according to the present invention;

[0033] Figure 6 is a schematic diagram of the structure at the stainless steel frame of an animal cell extraction device according to the present invention;

[0034] Figure 7 is a partially sectional schematic diagram of the vibration component of an animal cell extraction device according to the present invention;

[0035] Figure 8 is a sectional schematic diagram of the connection component of an animal cell extraction device according to the present invention.

[0036] In the figure: 1, stainless steel frame; 2, screening device; 21, sieve body one; 22, sieve body two; 23, sieve body three; 24, sieve body four; 25, mounting column; 26, connecting part; 261, threaded nut; 262, threaded column; 27, spraying and washing component; 271, micro pump; 272, threaded sleeve; 273, hose; 274, water inlet pipe; 275, spraying pipe; 28, vibration component; 281, fixing ring; 282, moving seat; 283, slider; 284, screw rod one; 285, screw rod two; 286, rubber rod; 287, micro vibrator; 288, gasket; 29, cover body; 210, positioning rod; 211, opening; 212, spring; 213, extension port; 214, positioning hole; 3, placing component; 31, connecting shell; 32, connecting head; 33, placing end; 331, contact ring; 332, limiting ring; 4, identification component; 41, through-hole; 42, mark block. Detailed implementation manner

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Reference Figures 1-8 As shown in a kind of animal cell extraction device, which includes a stainless-steel frame 1. A screening device 2 is arranged on the surface of the stainless-steel frame 1. The screening device 2 includes a first sieve body 21, a second sieve body 22, a third sieve body 23 and a fourth sieve body 24 fixed in the inner wall of the stainless-steel frame 1, all made of stainless steel, with pore diameters of 20μm, 40μm, 70μm and 100μm respectively. A cover body 29 is arranged above the stainless-steel frame 1. An installation column 25 is rotatably connected to the inner wall of the stainless-steel frame 1. The installation column 25 is inserted into the inner wall of the cover body 29. A connecting part 26 is arranged between the installation column 25 and the cover body 29. The connecting part 26 includes a threaded column 262 fixed at the upper end of the installation column 25. A threaded cap 261 is rotatably connected to the upper surface of the cover body 29. The threaded cap 261 is threadedly connected to the threaded column 262. An opening 211 is formed on the surface of the cover body 29. An extension port 213 is fixedly connected to the inner side of the cover body 29 directly below the opening 211. The lower part of the extension port 213 is in contact with the surface of the bottom wall of the stainless-steel frame 1. A spraying and washing assembly 27 and a vibration assembly 28 are respectively arranged on the surface of the cover body 29;

[0039] Among them, the vibration assembly 28 includes a fixed ring 281 fixed on the upper surface of the cover body 29. A moving seat 282 is slidably connected to the surface of the fixed ring 281. A slider 283 is slidably connected to the inner wall of the moving seat 282. A vibration part is fixedly connected to the lower surface of the slider 283. A control part is arranged on the moving seat 282. The control part can control the movement of the vibration part and position the moving seat 282. The vibration part includes a rubber rod 286 fixed on the lower surface of the slider 283. A micro-vibrator 287 is fixedly connected to the inner wall of the rubber rod 286. The micro-vibrator 287 is close to the lower end of the rubber rod 286. The control part includes a first screw rod 284 rotatably connected to the inner wall of the slider 283. The first screw rod 284 is threadedly connected to the inner wall of the slider 283. A second screw rod 285 is threadedly connected to the inner wall of the moving seat 282. A gasket 288 is fixedly connected to the lower end of the second screw rod 285. The gasket 288 is circularly arranged.

[0040] In this embodiment: When vibration is required, rotate the first screw 284. The first screw 284 drives the slider 283 and the entire vibration part to move, enabling the vibration part to contact the first sieve body 21, the second sieve body 22, the third sieve body 23 or the fourth sieve body 24, facilitating the control of the contact force. After moving the moving seat 282 on the fixed ring 281 and adjusting the position of the vibration part, the second screw 285 can be rotated. The second screw 285 can be pressed against the fixed ring 281 to play a positioning role. The rubber rod 286 is close to the first sieve body 21, the second sieve body 22, the third sieve body 23 or the fourth sieve body 24. The micro-vibrator 287 at its lower end can efficiently transmit vibration to the filter screen surface, quickly shaking off the adhered cell clusters or impurities on the screen, reducing the blockage of the sieve holes, ensuring the smooth progress of the cell screening process, and improving the screening efficiency;

[0041] Among them, the spraying assembly 27 includes a micro-pump 271 installed on the upper surface of the cover body 29. Its input end is connected with a suction pipe fitting, and the output end is fixed with a water inlet pipe 274. The other end of the water inlet pipe 274 is installed with a spraying pipe 275. The spraying pipe 275 includes an annular pipe and a plurality of nozzles. The annular pipe is fixed to the inner wall of the cover body 29, and the nozzles extend into the opening 211. The suction pipe fitting includes a threaded sleeve 272 threadedly connected to the input end of the micro-pump 271. One end of the threaded sleeve 272 is fixedly connected with a hose 273.

[0042] In this embodiment: During the water spraying process, the hose 273 can be inserted into a container filled with a culture solution. Subsequently, the micro-pump 271 cooperates with the hose 273 to perform suction and spray through the spraying pipe 275, spraying on the first sieve body 21, the second sieve body 22, the third sieve body 23 or the fourth sieve body 24, and cooperating with the vibration assembly 28 to further reduce the clogging effect.

[0043] Among them, a positioning rod 210 is slidably connected to the inner wall of the cover body 29. A plurality of positioning holes 214 for inserting the positioning rod 210 are formed on the surface of the stainless steel frame 1. A spring 212 is sleeved on the surface of the positioning rod 210. Both ends of the spring 212 are fixedly connected to the surface of the positioning rod 210 and the cover body 29 respectively.

[0044] In this embodiment: When the cover body 29 rotates in cooperation with the mounting post 25 and the extension port 213 is aligned with the corresponding screening position, insert the positioning rod 210 into the inner wall of the corresponding positioning hole 214. The spring 212 improves the position stability of the positioning rod 210, thereby ensuring that the overall screening operation can be carried out stably.

[0045] Among them, an identification component 4 is arranged between the cover body 29 and the stainless-steel frame 1. The identification component 4 includes a through hole 41 formed on the surface of the cover body 29. Four marking blocks 42 corresponding to the first sieve body 21, the second sieve body 22, the third sieve body 23, and the fourth sieve body 24 are fixedly connected to the surface of the stainless-steel frame 1. After the through hole 41 rotates to the upper side of the corresponding marking block 42, the operator can quickly find the required screening aperture.

[0046] Among them, a placement component 3 is arranged below the stainless-steel frame 1. The placement component 3 includes a connection shell 31 located below the stainless-steel frame 1. A connection head 32 is fixedly connected to the upper surface of the connection shell 31. The connection head 32 is threadedly connected to the inner wall of the stainless-steel frame 1. A plurality of placement ends 33 in contact with the culture dish are fixedly connected to the inner side of the connection shell 31. The diameters of the plurality of placement ends 33 increase sequentially from inside to outside. The placement end 33 includes a contact ring 331 fixed to the inner side of the connection shell 31. A limiting ring 332 is fixedly connected to the lower end of the contact ring 331.

[0047] In this embodiment: Culture dishes with different diameters can be placed on the placement ends 33 with diameters increasing sequentially from inside to outside. The contact ring 331 can be in contact with the upper end of the culture dish, and the limiting ring 332 can be in contact with the inner side of the culture dish, so as to play a role in placement and limit, facilitating the collection operation, accurately collecting the screened cell samples, and reducing sample spillage or cross-contamination.

[0048] Working principle of the present invention: When extracting and screening animal cells, first place it on the culture dish through the placement end 33. The contact ring 331 can contact the upper end of the culture dish, and the limiting ring 332 can contact the inner side of the culture dish. Pull the positioning rod 210, and the spring 212 is stressed. Drive the cover 29 to rotate through the mounting post 25. The cover 29 can drive the extension port 213 to rotate until it is above one of the sieve body one 21, sieve body two 22, sieve body three 23, and sieve body four 24. At the same time, during rotation, through the through hole 41 and the marking block 42, the corresponding aperture can be quickly found. Then release the positioning rod 210, and the spring 212 drives the positioning rod 210 to insert into the corresponding positioning hole 214. Subsequently, the cell suspension can be poured into the screening area (sieve body one 21, sieve body two 22, sieve body three 23, sieve body four 24) through the opening 211 and the extension port 213 for screening. When the screening is not smooth, rotate the screw rod one 284. The screw rod one 284 can drive the slider 283 and the vibration part to move. The rubber rod 286 in the vibration part can contact the surface of the sieve body one 21, sieve body two 22, sieve body three 23, or sieve body four 24. Then turn on the micro-vibrator 287. The micro-vibrator 287 cooperates with the rubber rod 286 to vibrate. The vibration force is transmitted to the sieve body one 21, sieve body two 22, sieve body three 23, or sieve body four 24, which can quickly disperse the adhered cell clusters or impurities on the sieve mesh, reduce the blockage of the sieve holes, and ensure the smoothness of the cell screening process. At the same time, the moving seat 282 can be moved on the fixed ring 281 to adjust the position of the vibration part, and by rotating the screw rod two 285, the screw rod two 285 drives the gasket 288 to squeeze on the fixed ring 281 to achieve positioning. During the vibration process, the hose 273 can be inserted into the container filled with the culture solution. Then the micro-pump 271 cooperates with the hose 273 to suck and spray through the spraying pipe 275, spraying on the sieve body one 21, sieve body two 22, sieve body three 23, or sieve body four 24, further reducing the blockage effect in cooperation with the vibration assembly 28;

[0049] The hose 273 can also be inserted into the container filled with water. The micro-pump 271 cooperates with the hose 273 to suck and spray through the spraying pipe 275, spraying on the sieve body one 21, sieve body two 22, sieve body three 23, or sieve body four 24, which can achieve the cleaning effect;

[0050] In the present invention, the connection shell 31 can be disassembled from the stainless steel frame 1 through the connection head 32, and the cover 29 can be disassembled between the connection part 26 and the mounting post 25, which is convenient for overall cleaning.

[0051] All the electrical components mentioned in this text are connected to the external main controller and the 220V mains, and the main controller can be a conventional known device such as a computer for control.

[0052] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An animal cell extraction device, comprising a stainless steel frame (1), characterized in that: A screening device (2) is provided on the surface of the stainless - steel frame (1). The screening device (2) includes a first sieve body (21), a second sieve body (22), a third sieve body (23), and a fourth sieve body (24) fixed in the inner wall of the stainless - steel frame (1). A cover body (29) is provided above the stainless - steel frame (1). An installation column (25) is rotatably connected to the inner wall of the stainless - steel frame (1). The installation column (25) is inserted into the inner wall of the cover body (29). A connection part (26) is provided between the installation column (25) and the cover body (29). An opening (211) is formed on the surface of the cover body (29). A extending port (213) is fixedly connected to the inner side of the cover body (29) directly below the opening (211). The lower part of the extending port (213) contacts the surface of the bottom wall of the stainless - steel frame (1). A spraying and washing component (27) and a vibration component (28) are respectively provided on the surface of the cover body (29). The vibration component (28) includes a fixed ring (281) fixed on the upper surface of the cover body (29). A moving seat (282) is slidably connected to the surface of the fixed ring (281). A slider (283) is slidably connected to the inner wall of the moving seat (282). A vibration part is fixedly connected to the lower surface of the slider (283). A control part is provided on the moving seat (282). The spraying and washing component (27) includes a micro - pump (271) installed on the upper surface of the cover body (29). Its input end is connected to a suction pipe fitting, and its output end is fixed with a water inlet pipe (274). The other end of the water inlet pipe (274) is installed with a spraying pipe (275). The spraying pipe (275) includes an annular pipe and a plurality of nozzles. The annular pipe is fixed to the inner wall of the cover body (29), and the nozzles extend into the opening (211).

2. The animal cell extraction device according to claim 1, characterized in that: The vibration part includes a rubber rod (286) fixed to the lower surface of the slider (283). A micro - vibrator (287) is fixedly connected to the inner wall of the rubber rod (286). The micro - vibrator (287) is close to the lower end of the rubber rod (286).

3. The animal cell extraction device according to claim 1, characterized in that: The control part includes a first screw rod (284) rotatably connected to the inner wall of the slider (283). The first screw rod (284) is threadedly connected to the inner wall of the slider (283). A second screw rod (285) is threadedly connected to the inner wall of the moving seat (282).

4. The animal cell extraction device according to claim 3, characterized in that: The lower end of the second screw rod (285) is fixedly connected with a gasket (288). The gasket (288) is circularly arranged.

5. The animal cell extraction device according to claim 1, characterized in that: The suction pipe fitting includes a threaded sleeve (272) threadedly connected to the input end of the micro - pump (271). One end of the threaded sleeve (272) is fixedly connected with a hose (273).

6. The animal cell extraction device according to claim 1, characterized in that: The connection part (26) includes a threaded column (262) fixed to the upper end of the installation column (25). A threaded cap (261) is rotatably connected to the upper surface of the cover body (29). The threaded cap (261) is threadedly connected to the threaded column (262).

7. An animal cell extraction device according to claim 1, characterized in that: A positioning rod (210) is slidably connected to the inner wall of the cover body (29). A plurality of positioning holes (214) for inserting the positioning rod (210) are formed on the surface of the stainless steel frame (1). A spring (212) is sleeved on the surface of the positioning rod (210), and two ends of the spring (212) are respectively fixedly connected to the surface of the positioning rod (210) and the cover body (29).

8. An animal cell extraction device according to claim 1, characterized in that: An identification component (4) is arranged between the cover body (29) and the stainless steel frame (1). The identification component (4) includes a through hole (41) formed on the surface of the cover body (29), and four marking blocks (42) respectively corresponding to the first sieve body (21), the second sieve body (22), the third sieve body (23) and the fourth sieve body (24) are fixedly connected to the surface of the stainless steel frame (1).

9. The animal cell extraction device according to claim 1, wherein: A placing component (3) is arranged below the stainless steel frame (1). The placing component (3) includes a connecting shell (31) located below the stainless steel frame (1). A connecting head (32) is fixedly connected to the upper surface of the connecting shell (31), and the connecting head (32) is threadedly connected to the inner wall of the stainless steel frame (1). A plurality of placing ends (33) in contact with the culture dish are fixedly connected to the inner side of the connecting shell (31), and the diameters of the plurality of placing ends (33) increase sequentially from inside to outside.

10. An animal cell extraction device according to claim 9, characterized in that: The placing end (33) includes a contact ring (331) fixed to the inner side of the connecting shell (31), and a limiting ring (332) is fixedly connected to the lower end of the contact ring (331).

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