A device for convenient cell extraction

Abstract

The utility model relates to the technical field of cell extraction devices, and proposes a device for convenient cell extraction, including a protective shell and an extraction cylinder, wherein the extraction cylinder is located inside the protective shell, and a telescopic opening is provided at one end of the protective shell, and the telescopic opening is located on the extraction end side of the extraction cylinder, a piston cylinder is provided inside the extraction cylinder, and a handle for pulling the piston cylinder is provided on one side of the protective shell, and the handle is fixedly connected to one end of the piston cylinder located outside the extraction cylinder, and two sealing plates are provided inside the protective shell, and the sealing plates are located at the telescopic opening, and the protective shell is provided with a pushing structure for pushing the sealing plates and the extraction cylinder to move. Through the above technical scheme, the problem that the protective device in the prior art needs to be manually inserted into the extension opening to close it or manually taken out from the extension opening, which is relatively troublesome to operate, and the protective device is hung on the outer shell of the device, which is easy to be damaged or fall off due to bumps.

Description

Technical Field

[0001] The utility model relates to the technical field of cell extraction devices, and in particular to a cell extraction device. Background Art

[0002] Cells are the basic structural and functional units of organisms and the basic units that make up the tissues and organs of organisms. Cells have various specific morphologies, structures and functions, and can perform various processes of life activities, such as metabolism, proliferation, differentiation and signal transduction. Cells play an important role in scientific research, medical diagnosis and treatment. In medical research or clinical fields, it is often necessary to extract biological cells for research or testing. Researchers generally use syringes to extract cell fluids.

[0003] The prior art discloses a portable biological cell extraction device, comprising a protective shell, a projection opening is provided at the bottom end of the protective shell, an extraction tube is arranged inside the protective shell; an adjusting device is arranged inside the protective shell, a rotating rod is penetrated through the outer surface of the protective shell and is rotatably connected to the rotating rod, a transmission rod is fixed to one end of the rotating rod located inside the protective shell, a gear is fixed to one end of the transmission rod away from the rotating rod, a rack is slidably connected to the inner wall of the protective shell, a connecting rod is fixed to the outer surface of the rack, a sliding groove is provided on the outer surface of the protective shell, a slider is slidably connected to the inside of the sliding groove, a fixing rod is fixed to one end of the slider located inside the protective shell, a protective device is arranged on the outer surface of the protective shell, a mounting block is fixed to the outer surface of the protective shell, and a rotating shaft is rotatably connected to the inner wall of the mounting block, and the protective device can further protect the extraction tube. The prior art can move the extraction tube up and down through the design of the rotating rod, the transmission rod, the gear, the rack and the connecting rod, so that the extraction tube is extended out of the protective shell and located inside the protective shell, so that it is convenient to carry.

[0004] However, the protective device in the above device needs to be manually inserted into the extension opening to close it or manually taken out from the extension opening, which is troublesome to operate. In addition, the protective device is hung on the outer shell of the device and is easy to be bumped, damaged and dropped. Utility Model Content

[0005] The utility model provides a device for facilitating cell extraction, which solves the problem that the protective device in the related art needs to be manually inserted into the extension port for sealing or manually taken out from the extension port, which is troublesome to operate, and the protective device is hung on the outer shell of the device, which is easy to be damaged by bumps and fall off.

[0006] The technical solution of the utility model is as follows:

[0007] A device for convenient cell extraction comprises a protective shell and an extraction cylinder, wherein the extraction cylinder is located inside the protective shell, a telescopic opening is provided at one end of the protective shell, the telescopic opening is located on the extraction end side of the extraction cylinder, a piston cylinder is provided inside the extraction cylinder, a handle for pulling the piston cylinder is provided on one side of the protective shell, the handle is fixedly connected to one end of the piston cylinder located outside the extraction cylinder, two sealing plates are provided inside the protective shell, the sealing plates are located at the telescopic opening, and the protective shell is provided with a pushing structure for pushing the sealing plates away from or close to the telescopic opening and simultaneously pushing the extraction cylinder to pass through the telescopic opening to move outside or inside the protective shell.

[0008] Further, the pushing structure includes a push plate, a first rotating rod, and a second rotating rod, the push plate is located on a side of the protective shell away from the handle, one end of the push plate is rotatably connected to the protective shell, the push plate extends into the protective shell, the protective shell is provided with a fixing structure for fixing the push plate, a reset member for resetting the push plate is fixedly connected inside the protective shell, and the reset member abuts against the push plate;

[0009] The first rotating rod and the second rotating rod are both rotatably connected to the protective shell, and the first rotating rod and the second rotating rod are respectively located on both sides of the inside of the protective shell, the first rotating rod is close to the push plate, and the second rotating rod is close to the handle, a pushing and turning structure is provided between the first rotating rod and the push plate for the push plate to push the first rotating rod to rotate, and a linkage structure is provided between the first rotating rod and the second rotating rod for the first rotating rod and the second rotating rod to link with each other, a first moving structure is provided at one end of the first rotating rod close to the sealing plate for driving the sealing plate to move while the first rotating rod rotates, and a second moving structure is provided at one end of the second rotating rod close to the sealing plate for driving the sealing plate to move while the first rotating rod rotates, and a pushing structure is provided between the first rotating rod and the extraction cylinder for pushing the extraction cylinder out while the first rotating rod rotates.

[0010] Furthermore, the fixing structure includes a fixing part and a second return spring, wherein the fixing part is close to an end of the push plate away from the end connected to the protective shell, the second return spring is located at an end of the fixing part away from the push plate, the second return spring abuts against the fixing part, the fixing part includes a movable plate, the movable plate is located on the outer side of the protective shell, and a fixing groove is provided at an end of the push plate close to the fixing part, and the fixing groove is detachably connected to the fixing part.

[0011] Furthermore, the push-and-turn structure includes a first rack and a second gear. A movable groove is provided on the side of the push plate facing the protective shell, one end of the first rack is embedded in the movable groove, the first rack is rotatably connected to the push plate, the second gear is fixedly connected to the first rotating rod, the first rotating rod is located in the middle of the second gear, and limit plates are provided at both ends of the second gear. The end of the first rack away from the movable groove is located between the limit plates, and the first rack is meshed with the second gear.

[0012] Furthermore, the linkage structure includes a linkage rod, which is close to the end of the protective shell away from the telescopic opening, and the linkage rod is rotatably connected to the protective shell. Fifth bevel gears are provided at both ends of the linkage rod, and the two fifth bevel gears are respectively close to the first rotating rod and the second rotating rod. The first rotating rod is provided with a first bevel gear close to the fifth bevel gear, and the second rotating rod is provided with a third bevel gear close to the fifth bevel gear. The first bevel gear and the second bevel gear are both meshed with the fifth bevel gear close to them.

[0013] Furthermore, the first movable structure includes a first gear, and the second movable structure includes a third gear. The first gear is fixedly connected to one end of the first rotating rod facing the sealing plate, and the third gear is fixedly connected to one end of the second rotating rod facing the sealing plate. A third rack is provided on one side of the two sealing plates facing the extraction cylinder, and the third rack close to the first rotating rod is meshed with the first gear, and the third rack close to the second rotating rod is meshed with the third gear.

[0014] Furthermore, the pushing structure includes a linkage member and a second rack, one end of the second rack is fixedly connected to the extraction cylinder, the linkage member is rotatably connected to the protective shell, a sixth bevel gear and a fourth gear are respectively provided at both ends of the linkage member, the sixth bevel gear faces the first rotating rod, the fourth gear faces the second rack, the fourth gear is meshed with the second rack, a second bevel gear is provided at the first rotating rod near the sixth bevel gear, the second bevel gear is meshed with the sixth bevel gear, an auxiliary pushing structure is provided between the second rotating rod and the extraction cylinder, the auxiliary pushing structure is the same as the pushing structure, the second rotating rod is provided with a fourth bevel gear near the auxiliary pushing structure, the fourth bevel gear is meshed with the sixth bevel gear of the auxiliary pushing structure.

[0015] The working principle and beneficial effects of the utility model are:

[0016] When the utility model is in use, the sealing plate is pushed to move in a direction away from the telescopic opening by the pushing structure to open the telescopic opening. The pushing structure pushes the sealing plate and at the same time pushes the extraction tube through the telescopic opening toward the outside of the protective shell, so that the extraction tube extends out of the protective shell. The operator then extracts the cells. After the extraction is completed, the pushing structure pushes the extraction tube to move toward the inside of the protective shell, so that the extraction tube enters the protective shell, and at the same time moves the sealing plate toward the telescopic opening to seal the telescopic opening. The utility model does not need to manually operate the sealing plate, and the sealing plate and the extraction tube can be moved at the same time, which solves the problem that the protective device in the related art needs to be manually inserted into the extension opening to close it or manually taken out from the extension opening, which is more troublesome to operate, and the protective device is hung on the outer shell of the device, which is easy to be damaged or fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is the internal structure diagram of the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 for Figure 2 Sectional view at AA;

[0022] Figure 5 for Figure 2 Cross-sectional view at BB;

[0023] Figure 6 for Figure 2 Sectional view at CC of ;

[0024] Figure 7 for Figure 3 The DD section and perspective view are mainly used to show the internal structure of the push plate;

[0025] Figure 8 for Figure 7 Enlarged view of point A.

[0026] In the figure: 1, protective shell; 2, push plate; 3, handle; 4, extraction cylinder; 5, first rotating rod; 6, second rotating rod; 7, linkage rod; 8, linkage member; 10, perspective plate; 11, reset member; 12, sealing plate; 13, telescopic opening; 20, first rack; 21, movable groove; 22, fixed groove; 23, fixed member; 30, piston cylinder; 40, second rack; 50, first bevel gear; 51, second bevel gear; 52, first gear; 53, second gear; 54, limit plate; 60, third bevel gear; 61, fourth bevel gear; 62, third gear; 70, fifth bevel gear; 80, sixth bevel gear; 81, fourth gear; 120, third rack; 230, movable plate; 231, second reset spring. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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] like Figures 1 to 8 As shown, this embodiment proposes a device for facilitating cell extraction, including a protective shell 1 and an extraction cylinder 4. The extraction cylinder 4 is located inside the protective shell 1. A telescopic opening 13 is provided at one end of the protective shell 1. The telescopic opening 13 is located on the extraction end side of the extraction cylinder 4. A piston cylinder 30 is provided inside the extraction cylinder 4. A handle 3 for pulling the piston cylinder 30 is provided on one side of the protective shell 1. The handle 3 is fixedly connected to one end of the piston cylinder 30 located on the outside of the extraction cylinder 4. Two sealing plates 12 are provided inside the protective shell 1. The sealing plates 12 are located at the telescopic opening 13. The protective shell 1 is provided with a pushing structure for pushing the sealing plates 12 and the extraction cylinder 4 to move.

[0029] In this embodiment, the pushing structure includes a push plate 2, a first rotating rod 5, and a second rotating rod 6. The push plate 2 is located on the side of the protective shell 1 away from the handle 3. One end of the push plate 2 is rotatably connected to the protective shell 1. The push plate 2 extends toward the inside of the protective shell 1. The protective shell 1 is provided with a fixing structure for fixing the push plate 2. A reset member 11 for resetting the push plate 2 is fixedly connected inside the protective shell 1, and the reset member 11 abuts against the push plate 2.

[0030] In this embodiment, the first rotating rod 5 and the second rotating rod 6 are both rotatably connected to the protective shell 1. The first rotating rod 5 and the second rotating rod 6 are respectively located on both sides of the inside of the protective shell 1, the first rotating rod 5 is close to the push plate 2, and the second rotating rod 6 is close to the handle 3. A push-and-turn structure is arranged between the first rotating rod 5 and the push plate 2, and a linkage structure is arranged between the first rotating rod 5 and the second rotating rod 6, and a first moving structure is arranged at one end of the first rotating rod 5 close to the sealing plate 12, and a second moving structure is arranged at one end of the second rotating rod 6 close to the sealing plate 12, and a second moving structure is arranged to drive the sealing plate 12 to move while the first rotating rod 5 rotates. A pushing structure is arranged between the first rotating rod 5 and the extraction cylinder 4, and the pushing structure is arranged to push the extraction cylinder 4 out while the first rotating rod 5 rotates.

[0031] In this embodiment, the protective shell 1 is used to protect the extraction cylinder 4, which is convenient for users to carry. A perspective plate 10 is set on the front of the protective shell 1. The perspective plate 10 is located in front of the extraction cylinder 4. The perspective plate 10 is used to facilitate users to observe the extraction cylinder 4. The extraction cylinder 4 is used to extract cells. The telescopic opening 13 is the opening for the extraction cylinder 4 to enter and exit the protective shell 1. The telescopic opening 13 can be sealed by the abutment of two sealing plates 12 to protect the internal extraction cylinder 4. The piston cylinder 30 is a component of the extraction cylinder 4. The piston cylinder 30 is used to create a low pressure inside the extraction cylinder 4 to achieve cell extraction; the handle 3 is used to extend the extraction end of the piston cylinder 30 to the outside of the protective shell 1, which is convenient for users to operate the piston cylinder 30; the push plate 2 is used to facilitate users to push the first rotating rod 5. The push plate 2 is a triangular prism structure. The side of the protective shell 1 is provided with an opening with the same area as the side of the push plate 2, so that the push plate 2 can enter the inside of the protective shell 1 from the opening. A circular groove is provided at the upper end of the opening, and a corresponding circular protrusion is provided on the side of one end of the push plate 2, and the circular protrusion is embedded in the circular groove. The push plate 2 is connected with the protective shell 1 to realize the rotational connection between the push plate 2 and the protective shell 1; the reset member 11 is used to push the push plate 2 outward to reset the push plate 2. Two reset members 11 should be provided, which are respectively located on both sides of the surface of the push plate 2 facing the protective shell 1. A groove should be provided on the side of the push plate 2 facing the protective shell 1. The width of the groove should be greater than the diameter of the first rotating rod 5. The length of the groove should be the farthest distance from the upper end to the lower end of the surface of the push plate 2 facing the protective shell 1. The groove should be in the same position as the first rotating rod 5. The groove is used to avoid restricting the rotation of the first rotating rod 5 when the push plate 2 is pushed toward the inside of the protective shell 1. The groove allows the first rotating rod 5 to be embedded therein.

[0032] In this embodiment, the push plate 2 and the push-turn structure can be eliminated, and a motor is arranged between the top of the first rotating rod 5 or the second rotating rod 6 and the top of the inner part of the protective shell 1, and the rotating shaft of the motor is fixedly connected to the first rotating rod 5 or the second rotating rod 6, and then the motor is used to drive the first rotating rod 5 or the second rotating rod 6 to rotate, thereby achieving the corresponding effect; a motor switch is arranged on the outer wall of the protective shell 1, and the operator starts the motor operation by the switch.

[0033] like Figure 8 As shown, in this embodiment, the fixing structure includes a fixing member 23 and a second return spring 231. The fixing member 23 is close to the end of the push plate 2 away from the connection end with the protective shell 1. The second return spring 231 is located at the end of the fixing member 23 away from the push plate 2. The second return spring 231 abuts against the fixing member 23. The fixing member 23 includes a moving plate 230. The moving plate 230 is located on the outer side of the protective shell 1. The end of the push plate 2 close to the fixing member 23 is provided with a fixing groove 22. The fixing groove 22 is detachably connected to the fixing member 23. The fixing member 23 is used to fix the push plate 2, limit the distance that the push plate 2 moves into the protective shell 1, and fix the current position of the push plate 2; the second return spring 231 is used to reset the fixing member 23. When the fixing member 23 is pressed downward, the second return spring 231 can push the fixing member 23 upward to reset; the moving plate 230 is used to facilitate the user to remove the restriction of the fixing member 23 on the push plate 2, so that the push plate 2 is reset; the fixing groove 22 is used to embed the fixing member 23, so as to realize the function of the fixing member 23 limiting the position of the push plate 2. The working process of the fixed structure is as follows: the push plate 2 moves toward the inside of the protective shell 1, and the bottom of the push plate 2 pushes the fixing part 23 to move downward, squeezing the second return spring 231. When the push plate 2 moves to the fixing groove 22 and is located above the fixing part 23, the second return spring 231 pushes the fixing part 23 upward, and the fixing part 23 is embedded in the fixing groove 22, completing the fixation of the position of the push plate 2; when the user completes the cell extraction, the fixing part 23 is moved downward by the moving plate 230, squeezing the second return spring 231, and the fixing part 23 is separated from the fixing groove 22. The push plate 2 moves outward through the return part 11, the push plate 2 is reset, and the fixing part 23 is reset.

[0034] like Figure 5 , Figure 8As shown, in this embodiment, the push-and-turn structure includes a first rack 20 and a second gear 53. A movable groove 21 is provided on the side of the push plate 2 facing the protective shell 1. One end of the first rack 20 is embedded in the movable groove 21. The first rack 20 is rotatably connected to the push plate 2. The second gear 53 is fixedly connected to the first rotating rod 5. The first rotating rod 5 is located in the middle of the second gear 53. Limiting plates 54 are provided at both ends of the second gear 53. The end of the first rack 20 away from the movable groove 21 is located between the limiting plates 54, and the first rack 20 is meshed with the second gear 53. The first rack 20 is used to drive the second gear 53 to rotate, and then drive the first rotating rod 5 to rotate; the second gear 53 is used to realize the function of the first rack 20 driving the first rotating rod 5 to rotate through the meshing of gears; the limit plate 54 is used to limit the position of the first rack 20 to prevent the first rack 20 from being displaced during the movement, and then the connection is unstable; the movable groove 21 is used to keep the first rack 20 perpendicular to the first rotating rod 5, to ensure the stable connection between the first rack 20 and the second gear 53. Since the movement of the push plate 2 is to rotate around the fixed point between the push plate 2 and the protective shell 1, the first rack 20 will be tilted at an angle during the movement of the push plate 2. The movable groove 21 can be used in combination with the limit plate 54 to avoid the first rack 20 from tilting at an angle. When the push plate 2 moves, the end of the first rack 20 connected to the movable groove 21 will move up and down in the movable groove 21 to keep the first rack 20 perpendicular to the first rotating rod 5.

[0035] like Figure 2 , Figure 7 As shown, in this embodiment, the linkage structure includes a linkage rod 7, the linkage rod 7 is close to the end of the protective shell 1 away from the telescopic opening 13, the linkage rod 7 is rotatably connected to the protective shell 1, and both ends of the linkage rod 7 are provided with a fifth bevel gear 70, the two fifth bevel gears 70 are respectively close to the first rotating rod 5 and the second rotating rod 6, the first rotating rod 5 is provided with a first bevel gear 50 near the fifth bevel gear 70, and the second rotating rod 6 is provided with a third bevel gear 60 near the fifth bevel gear 70, and the first bevel gear 50 and the second bevel gear 51 are both meshed with the fifth bevel gear 70 close to them. The linkage rod 7 is used to drive the second rotating rod 6 to rotate, and the linkage rod 7 is driven to rotate by the rotation of the first rotating rod 5, and then the linkage rod 7 drives the second rotating rod 6 to rotate; the linkage rod 7 is close to the end of the protective shell 1 away from the telescopic opening 13, which can prevent the linkage rod 7 from hindering the rise of the piston cylinder 30, thereby preventing the linkage rod 7 from affecting the cell extraction; the first bevel gear 50, the second bevel gear 51, and the fifth bevel gear 70 are all used to realize the function of the linkage rod 7 through mutual meshing transmission.

[0036] like Figure 4As shown, in this embodiment, the first movable structure includes a first gear 52, and the second movable structure includes a third gear 62. The first gear 52 is fixedly connected to one end of the first rotating rod 5 toward the sealing plate 12, and the third gear 62 is fixedly connected to one end of the second rotating rod 6 toward the sealing plate 12. A third rack 120 is provided on one side of the two sealing plates 12 facing the extraction cylinder 4. The third rack 120 close to the first rotating rod 5 is meshed with the first gear 52, and the third rack 120 close to the second rotating rod 6 is meshed with the third gear 62. The first gear 52 and the third gear 62 are both used for meshing transmission with the third rack 120, so as to realize the function of the first gear 52 and the third gear 62 driving the sealing plate 12 to move; the gear edge of the third rack 120 should be set according to the rotation direction of the first gear 52 and the third gear 62, so that when the first gear 52 and the third gear 62 rotate, the two sealing plates 12 can move to both sides of the protective device, thereby opening the telescopic opening 13; the protective shell 1 should be redundantly set outward at the sealing plate 12 to avoid the situation where the sealing plate 12 moves to the extreme side, but the extraction cylinder 4 has not yet fully extended out of the protective shell 1.

[0037] like Figure 5 , Figure 6 As shown, in the present embodiment, the pushing structure includes a linkage member 8 and a second rack 40, one end of the second rack 40 is fixedly connected to the extraction cylinder 4, the linkage member 8 is rotatably connected to the protective shell 1, and a sixth bevel gear 80 and a fourth gear 81 are respectively arranged at both ends of the linkage member 8, the sixth bevel gear 80 faces the first rotating rod 5, the fourth gear 81 faces the second rack 40, the fourth gear 81 is meshed with the second rack 40, a second bevel gear 51 is arranged near the sixth bevel gear 80 of the first rotating rod 5, the second bevel gear 51 is meshed with the sixth bevel gear 80, an auxiliary pushing structure is arranged between the second rotating rod 6 and the extraction cylinder 4, the auxiliary pushing structure is the same as the pushing structure, a fourth bevel gear 61 is arranged near the auxiliary pushing structure of the second rotating rod 6, and the fourth bevel gear 61 is meshed with the sixth bevel gear 80 of the auxiliary pushing structure. The linkage member 8 is used to drive the second rack 40 to move, and then drive the extraction tube 4 to move. The linkage member 8 is driven to rotate by the rotation of the first rotating rod 5, and then the second rack 40 is driven to move by the linkage member 8; the second rack 40 is used to cooperate with the linkage member 8 to realize the movement of the extraction tube 4; the sixth bevel gear 80 and the second bevel gear 51 cooperate with each other, and the function of the first rotating rod 5 driving the linkage member 8 to rotate is realized through meshing transmission; the second rack 40 and the fourth gear 81 cooperate with each other, and the function of moving the extraction tube 4 is realized through meshing transmission; the auxiliary ejection structure is used to help the ejection structure move the extraction tube 4 faster and more stably, and its structure and transmission method are the same as those of the ejection structure.

[0038] Working process of this embodiment: the user pushes the push plate 2 to move toward the inside of the protective shell 1, and the first rack 20 pushes the second gear 53 to rotate, that is, pushes the first rotating rod 5 to rotate. At the same time, the rotation of the first rotating rod 5 drives the linkage rod 7 to rotate, and the linkage rod 7 drives the second rotating rod 6 to rotate. While the first rotating rod 5 rotates, the first gear 52 drives the third rack 120 below the first rotating rod 5 to move toward the side of the protective shell 1, that is, the sealing plate 12 moves toward the side of the protective shell 1; the second gear 53 drives the sixth bevel gear 80 to rotate, the sixth bevel gear 80 drives the fourth gear 81 to rotate, and the fourth gear 81 drives the second rack 40 to move downward, that is, the extraction tube 4 moves downward. While the second gear 53 rotates, the third gear 62 drives the third rack 120 below the second rotating rod 6 to move toward the side of the protective shell 1, that is, the sealing plate 12 moves toward the side of the protective shell 1; the fourth bevel gear 61 drives the auxiliary push-out structure to rotate, and the auxiliary push-out structure drives the extraction tube 4 to move downward. When the push plate 2 is pushed toward the inside of the protective shell 1 until the fixing part 23 is located at the lower part of the fixing groove 22, the fixing part 23 is embedded in the fixing groove 22 to limit the movement of the push plate 2, the sealing plate 12 is opened, and the extraction tube 4 is pushed out. The user extracts cells by pulling the handle 3 upwards. After the extraction is completed, the user pushes the movable plate 230 downwards to separate the fixing part 23 from the fixing groove 22, the reset part 11 pushes the push plate 2 outwards, the first rotating rod 5 and the second rotating rod 6 rotate in opposite directions, the extraction tube 4 moves upwards, and the sealing plate 12 moves close to the middle of the telescopic opening 13. When the push plate 2 is reset, the extraction tube 4 returns to the inside of the protective shell 1, and the sealing plate 12 seals the telescopic opening 13.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cell extraction device, comprising a protective shell (1) and an extraction cylinder (4), wherein the extraction cylinder (4) is located inside the protective shell (1), a telescopic opening (13) is provided at one end of the protective shell (1), and the telescopic opening (13) is located at the extraction end side of the extraction cylinder (4), a piston cylinder (30) is provided inside the extraction cylinder (4), and a handle (3) for pulling the piston cylinder (30) is provided on an outer side of the protective shell (1), and the handle (3) is fixedly connected to one end of the piston cylinder (30) located on the outer side of the extraction cylinder (4), characterized in that: Two sealing plates (12) are provided inside the protective shell (1), and the sealing plates (12) are located at the telescopic opening (13). The protective shell (1) is provided with a pushing structure for pushing the sealing plates (12) away from the telescopic opening (13) or close to the telescopic opening (13), and simultaneously pushing the extraction cylinder (4) to pass through the telescopic opening (13) and move to the outside or inside of the protective shell (1).

2. The device for facilitating cell extraction according to claim 1, characterized in that: The pushing structure comprises a push plate (2), a first rotating rod (5), and a second rotating rod (6); the push plate (2) is located on a side of the protective shell (1) away from the handle (3); one end of the push plate (2) is rotatably connected to the protective shell (1); the push plate (2) extends into the interior of the protective shell (1); the protective shell (1) is provided with a fixing structure for fixing the push plate (2); a reset member (11) for resetting the push plate (2) is fixedly connected to the interior of the protective shell (1); the reset member (11) is in contact with the push plate (2); The first rotating rod (5) and the second rotating rod (6) are both rotatably connected to the protective shell (1); the first rotating rod (5) and the second rotating rod (6) are respectively located at two sides of the interior of the protective shell (1); the first rotating rod (5) is close to the push plate (2); the second rotating rod (6) is close to the handle (3); a push-rotation structure for enabling the push plate (2) to push the first rotating rod (5) to rotate is provided between the first rotating rod (5) and the push plate (2); a linkage structure for enabling the first rotating rod (5) and the second rotating rod (6) to be linked; a first moving structure for driving the sealing plate (12) to move while the first rotating rod (5) rotates is provided at one end of the first rotating rod (5) close to the sealing plate (12); a second moving structure for driving the sealing plate (12) to move while the first rotating rod (5) rotates is provided at one end of the second rotating rod (6) close to the sealing plate (12); and a pushing structure for pushing the extraction cylinder (4) out while the first rotating rod (5) rotates is provided between the first rotating rod (5) and the extraction cylinder (4).

3. The device for facilitating cell extraction according to claim 2, characterized in that: The fixing structure comprises a fixing member (23) and a second return spring (231); the fixing member (23) is close to an end of the push plate (2) away from the end connected to the protective shell (1); the second return spring (231) is located at an end of the fixing member (23) away from the push plate (2); the second return spring (231) abuts against the fixing member (23); the fixing member (23) comprises a movable plate (230); the movable plate (230) is located on the outer side of the protective shell (1); a fixing groove (22) is provided at one end of the push plate (2) close to the fixing member (23); the fixing groove (22) is detachably connected to the fixing member (23).

4. The device for facilitating cell extraction according to claim 2, characterized in that: The push-and-turn structure comprises a first rack (20) and a second gear (53); a movable groove (21) is provided on the side of the push plate (2) facing the protective shell (1); one end of the first rack (20) is embedded in the movable groove (21); the first rack (20) is rotatably connected to the push plate (2); the second gear (53) is fixedly connected to the first rotating rod (5); the first rotating rod (5) is located in the middle of the second gear (53); limiting plates (54) are provided at both ends of the second gear (53); one end of the first rack (20) away from the movable groove (21) is located between the limiting plates (54); and the first rack (20) is meshed with the second gear (53).

5. The device for facilitating cell extraction according to claim 2, characterized in that: The linkage structure comprises a linkage rod (7), wherein the linkage rod (7) is close to one end of the protective shell (1) away from the telescopic opening (13), the linkage rod (7) is rotatably connected to the protective shell (1), and both ends of the linkage rod (7) are provided with a fifth bevel gear (70), the two fifth bevel gears (70) are respectively close to the first rotating rod (5) and the second rotating rod (6), the first rotating rod (5) is provided with a first bevel gear (50) close to the fifth bevel gear (70), the second rotating rod (6) is provided with a third bevel gear (60) close to the fifth bevel gear (70), and the first bevel gear (50) and the second bevel gear (51) are both meshed with the fifth bevel gear (70) close to them.

6. The device for facilitating cell extraction according to claim 2, characterized in that: The first movable structure comprises a first gear (52), and the second movable structure comprises a third gear (62). The first gear (52) is fixedly connected to one end of the first rotating rod (5) facing the sealing plate (12), and the third gear (62) is fixedly connected to one end of the second rotating rod (6) facing the sealing plate (12). A third rack (120) is provided on one side of the two sealing plates (12) facing the extraction cylinder (4). The third rack (120) close to the first rotating rod (5) is meshed with the first gear (52), and the third rack (120) close to the second rotating rod (6) is meshed with the third gear (62).

7. The device for facilitating cell extraction according to claim 2, characterized in that: The ejection structure comprises a linkage member (8) and a second rack (40); one end of the second rack (40) is fixedly connected to the extraction cylinder (4); the linkage member (8) is rotatably connected to the protective shell (1); a sixth bevel gear (80) and a fourth gear (81) are respectively provided at two ends of the linkage member (8); the sixth bevel gear (80) faces the first rotating rod (5); the fourth gear (81) faces the second rack (40); the fourth gear (81) meshes with the second rack (40); a second bevel gear (51) is provided near the sixth bevel gear (80) of the first rotating rod (5); the second bevel gear (51) meshes with the sixth bevel gear (80); an auxiliary ejection structure is provided between the second rotating rod (6) and the extraction cylinder (4); the auxiliary ejection structure has the same structure as the ejection structure; a fourth bevel gear (61) is provided near the auxiliary ejection structure of the second rotating rod (6); the fourth bevel gear (61) meshes with the sixth bevel gear (80) of the auxiliary ejection structure.

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