A stem cell storage protection extraction device

Abstract

The application discloses a kind of stem cell storage protection extraction devices, belong to stem cell storage technical field, including jar body;Still including mounting bracket and backing plate, the surface of backing plate is evenly provided with hole, and backing plate is sleeved on mounting bracket by hole;Mounting bracket is evenly slidably installed with backing plate, and the top wall of backing plate is detachably installed with storage basket, and reagent bottle is contained in storage basket;Slidably installed with baffle in jar body, and the top wall of baffle is provided with through hole, and through hole is cooperated with backing plate;The inner top wall of jar body is fixedly inserted with electric telescopic rod, and baffle is fixedly connected with output end;And baffle is equipped with the fixing mechanism for fixing backing plate in through hole;Two pressure relief valves are embedded on baffle;Through the cooperation of electric telescopic rod, baffle and backing plate, when taking out storage basket, it can prevent liquid nitrogen in jar body from being directly exposed to air, thereby reducing the evaporation loss of liquid nitrogen, while the liquid level drop speed in jar body can be reduced, to prevent sample in jar body from deteriorating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stem cell storage, and more particularly to a stem cell storage protection extraction device. BACKGROUND

[0002] Stem cells are a kind of cells with unlimited or immortal self-renewing ability, and can produce at least one type of highly differentiated daughter cells. At present, most biologists and medical scientists believe that stem cells are a kind of cells from embryos, fetuses or adults with unlimited self-renewing and proliferating differentiation ability under certain conditions, which can produce daughter cells with the same phenotype and genotype as themselves, and can also produce specialized cells that constitute tissues and organs of the body, and can also differentiate into progenitor cells.

[0003] At present, the long-term safe storage of stem cell samples relies on the-196 DEG C deep low-temperature environment provided by the liquid nitrogen tank. Maintaining the stability of the liquid nitrogen level is the key to ensuring the activity of the sample. However, the existing storage process has an inherent defect: each time the cover is opened for sample extraction or storage operation, it is a process of artificially causing a large amount of evaporation of liquid nitrogen. This frequent, operation-related evaporation loss not only increases the cost of expensive liquid nitrogen replenishment, but also speeds up the liquid level drop, increasing the safety hazard of sample "degradation" due to failure to replenish liquid nitrogen in time.

[0004] Therefore, a stem cell storage protection extraction device is provided. SUMMARY

[0005] In view of the problems in the prior art, the purpose of the present application is to provide a stem cell storage protection extraction device which can reduce the evaporation amount of liquid nitrogen in the tank during the process of taking out the sample from the tank.

[0006] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0007] A stem cell storage protection extraction device, comprising a tank body;

[0008] Further comprising a mounting frame and a supporting plate, the surface of the supporting plate is uniformly provided with holes, and the supporting plate is sleeved on the mounting frame through the holes;

[0009] The mounting frame is uniformly provided with a supporting plate which is slidably installed on the mounting frame, and the top wall of the supporting plate is detachably provided with a storage basket, and the storage basket is provided with a reagent bottle;

[0010] A partition plate is slidably installed in the tank body, and a through hole is formed in the top wall of the partition plate, and the through hole is matched with the supporting plate;

[0011] An electric telescopic rod with an output end fixedly connected with the partition plate is fixedly inserted on the inner top wall of the tank body;

[0012] The fixed plate is provided with a fixing mechanism for fixing the supporting plate in the through hole.

[0013] Two pressure relief valves are embedded in the fixed plate, and the output ends of the two pressure relief valves are located on the top wall and the bottom wall of the fixed plate.

[0014] Further, the fixing mechanism comprises a clamping groove formed on the side wall of the through hole; a bushing is formed on the side wall of the supporting plate, a clamping rod matched with the clamping groove is slidingly installed in the bushing, and a first driving mechanism for driving the clamping rod to move is arranged on the fixed plate.

[0015] Further, the first driving mechanism comprises a first permanent magnet fixedly installed on the side wall of the clamping rod, and a first spring fixedly installed between the clamping rod and the side wall of the bushing.

[0016] A cavity is formed in the fixed plate, and an electromagnet is arranged in the cavity and is attracted to the first permanent magnet.

[0017] Further, the surface of the storage basket is uniformly provided with holes, and a flow guide groove is formed on the top wall of the supporting plate.

[0018] Further, the pressure relief valve comprises a sleeve, a second spring and a baffle.

[0019] The sleeve is fixedly embedded in the fixed plate, and the two ends of the sleeve are respectively an input end and an output end.

[0020] The baffle is hingedly connected to the output end of the sleeve.

[0021] The two ends of the second spring are fixedly connected with the inner wall of the sleeve and the top wall of the baffle.

[0022] Further, a third spring matched with the upper supporting plate is fixedly installed on the top wall of the storage basket.

[0023] Further, a limiting sleeve is vertically fixedly installed on the inner top wall of the tank body.

[0024] Further, an installation groove is formed on the top wall of the supporting plate, a mounting hole is vertically formed on the bottom wall of the installation groove, a top rod is vertically slidingly inserted into the mounting hole, a top plate fixedly connected with the top rod is slidingly installed in the installation groove, and a second driving mechanism for driving the top plate to move upward is arranged on the tank body.

[0025] Further, the second driving mechanism comprises a bar magnet fixedly installed on the inner side wall of the limiting sleeve, the top rod is made of magnetic material, and the top end of the top rod is attracted to the bottom end of the bar magnet.

[0026] Further, the mounting bracket comprises a base and four guide rods, the guide rods are vertically fixedly installed on the top wall of the base, and the guide rods are uniformly circumferentially distributed.

[0027] Compared with the prior art, the beneficial effects of the present application are as follows:

[0028] (1) The scheme can prevent the liquid nitrogen in the tank body from being directly exposed to the air when the storage basket is taken out, thereby reducing the evaporation loss of the liquid nitrogen, and can also reduce the liquid level drop speed in the tank body to prevent the sample in the tank body from deteriorating.

[0029] (2) The scheme sets a limiting sleeve in communication with the opening in the tank body, and when the baffle plate is maximally moved upward, the bottom wall of the limiting sleeve is attached to the top wall of the baffle plate, thereby reducing the heat exchange amount between the inside and outside of the tank body when the staff takes out the storage basket, preventing a large amount of external gas from entering the tank body, and reducing the volatilization amount of the liquid nitrogen in the tank body.

[0030] (3) The scheme sets a movable top plate on the surface of the supporting plate to move the storage basket, thereby facilitating the staff to take out the storage basket when the cover is opened, shortening the time required to take out the storage basket, reducing the heat exchange amount between the inside and outside of the tank body, and reducing the volatilization amount of the liquid nitrogen in the tank body. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present application;

[0032] Figure 2 is a schematic diagram of the front cross-sectional structure of the present application;

[0033] Figure 3 is a schematic diagram of the enlarged structure of position A in the present application; Figure 2

[0034] Figure 4 is a schematic diagram of the enlarged structure of position B in the present application; Figure 2

[0035] Figure 5 is a schematic diagram of the structure of the supporting plate of the present application;

[0036] Figure 6 is a schematic diagram of the combined structure of the supporting plate and the mounting frame of the present application;

[0037] Figure 7 is a schematic diagram of the structure of the baffle plate of the present application.

[0038] Explanation of reference numerals in the drawings:

[0039] ​​1, tank; 2, mounting frame; 201, base; 202, guide rod; 3, support plate; 4, storage basket; 5, reagent bottle; 6, partition; 7, electric telescopic rod; 8, pressure relief valve; 801, sleeve; 802, baffle; 803, second spring; 9, clamping groove; 10, jack; 11, clamping rod; 12, first permanent magnet; 13, first spring; 14, electromagnet; 15, hole; 16, flow guide groove; 17, third spring; 18, limiting sleeve; 19, ejector rod; 20, top plate; 21, bar magnet; 22, opening; 23, cover. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Embodiment 1

[0042] Please refer to Figures 1 to 7 A stem cell storage protection extraction device, comprising a tank 1; the tank 1 is a heat preservation tank, and an opening 22 is formed in the top wall of the tank 1, and a cover 23 made of heat preservation material is detachably mounted on the tank 1, and the cover 23 is used to block the opening 22;

[0043] Further comprising a mounting frame 2 and a support plate 3, and the surface of the support plate 3 is uniformly provided with holes 15, and the support plate 3 is sleeved on the mounting frame 2 through the holes 15;

[0044] The mounting frame 2 is uniformly provided with the support plate 3 which is slidably mounted thereon, and the top wall of the support plate 3 is detachably provided with a storage basket 4, and the storage basket 4 contains reagent bottles 5;

[0045] The tank 1 is slidably provided with a partition 6, and the top wall of the partition 6 is provided with a through hole which cooperates with the support plate 3;

[0046] An electric telescopic rod 7 with an output end fixedly connected to the partition 6 is fixedly inserted into the inner top wall of the tank 1;

[0047] And the partition 6 is provided with a fixing mechanism for fixing the support plate 3 in the through hole;

[0048] Two pressure relief valves 8 are embedded on the partition 6, and the output ends of the two pressure relief valves 8 are located on the top wall and the bottom wall of the partition 6, respectively.

[0049] The fixing mechanism includes a slot 9 formed on the side wall of the through hole; an insertion hole 10 is formed on the side wall of the support plate 3, and a locking rod 11 that cooperates with the slot 9 is slidably installed in the insertion hole 10, and a first driving mechanism for driving the locking rod 11 to move is provided on the partition plate 6.

[0050] The first drive mechanism includes a first permanent magnet 12 fixedly installed on the side wall of the lever 11, and a first spring 13 fixedly installed between the lever 11 and the side wall of the insertion hole 10; the first spring 13 is made of low-temperature resistant austenitic stainless steel.

[0051] A cavity is provided on the partition 6, and an electromagnet 14 that is attracted to the first permanent magnet 12 is provided inside the cavity;

[0052] Among them, partition 6, support plate 3, clamp rod 11 and mounting bracket 2 are all made of thermal insulation material.

[0053] First, place the tray 3 onto the mounting frame 2, then place the storage basket 4 on the top wall of each tray 3, and place the reagent bottle 5 containing stem cells in the storage basket 4.

[0054] Then, liquid nitrogen is injected into the tank 1, and the mounting bracket 2 with the tray 3 and the storage basket 4 is placed into the tank 1. The opening 22 of the tank 1 is then sealed with the cap 23.

[0055] When taking out the sample, the electric telescopic rod 7 is activated first. The output end of the electric telescopic rod 7 drives the partition 6 to move down. When the partition 6 moves down and is fitted outside the tray 3, the slot 9 is aligned with the rod 11.

[0056] Then, the electromagnet 14 is energized. At this time, the electromagnet 14 is aligned with the first permanent magnet 12. Under the attraction between the electromagnet 14 and the first permanent magnet 12, the first permanent magnet 12 drives the locking rod 11 to insert into the locking slot 9. The first spring 13 is gradually stretched, so that the partition 6 and the support plate 3 can be fixed together through the cooperation of the locking rod 11 and the locking slot 9.

[0057] Then, the electric telescopic rod 7 is controlled to retract. During this process, the low-temperature air above the partition 6 in the tank 1 is discharged into the space below the partition 6 through the pressure relief valve 8, thereby reducing the amount of cold air loss when the cover 23 is opened. Until the partition 6 moves the storage basket 4 on the surface of the tray 3 into the opening 22, the cover 23 is opened, the storage basket 4 on the surface of the tray 3 is taken out, and the tray 3 is still fixed to the partition 6 to prevent the liquid nitrogen from directly contacting the outside air.

[0058] During the process of the partition 6 moving the storage basket 4 upwards via the tray 3 and opening the cover 23 to remove the storage basket 4, the partition 6 and the tray 3, made of heat-insulating material, prevent the liquid nitrogen located below the partition 6 from directly contacting the outside air, reducing the probability of liquid nitrogen absorbing heat and preventing liquid nitrogen from evaporating, thus saving costs.

[0059] like Figure 6 As shown, the surface of the storage basket 4 is evenly provided with holes 15, and the top wall of the tray 3 is provided with a guide groove 16. Under the action of the holes 15 and the guide groove 16, the contact area between the reagent bottle 5 and the liquid nitrogen is increased, which ensures that the reagent bottle 5 can be immersed in the liquid nitrogen.

[0060] like Figure 3 As shown, the pressure relief valve 8 includes a sleeve 801, a second spring 803, and a baffle 802;

[0061] The sleeve 801 is fixedly embedded in the partition 6, and the two ends of the sleeve 801 are the input end and the output end, respectively;

[0062] The baffle 802 is hinged to the output end of the sleeve 801;

[0063] The two ends of the second spring 803 are fixedly connected to the inner wall of the sleeve 801 and the top wall of the baffle 802, respectively.

[0064] For the pressure relief valve 8 whose output end is located on the bottom wall of the partition 6: during the upward movement of the partition 6, when the space above the partition 6 is under high pressure, the gas in the space above the partition 6 and the liquid nitrogen flowing out of the storage basket 4 will exert pressure on the baffle 802, causing the baffle 802 to disengage from the bottom of the sleeve 801, thereby transferring the liquid nitrogen above the partition 6 to below the partition 6. When the cover 23 is opened and the storage basket 4 is taken out, the amount of liquid nitrogen volatilization is further reduced.

[0065] For the pressure relief valve 8 whose output end is located on the top wall of the partition 6: by setting the pressure relief valve 8 whose output end is located on the top wall of the partition 6, the resistance encountered by the partition 6 when it moves downward can be reduced when the support plate 3 enters the through hole, thus ensuring that the partition 6 can move normally.

[0066] like Figure 2 As shown, a third spring 17 that cooperates with the upper support plate 3 is evenly fixedly installed on the top wall of the storage basket 4.

[0067] When the upper storage basket 4 is taken out, the tray 3 used to support the removed storage basket 4 must still be fixed in the through hole before the opening 22 is sealed with the cover 23 in order to prevent liquid nitrogen from evaporating.

[0068] After the cap 23 is installed in the opening 22, the electromagnet 14 is de-energized. At this time, the tray 3 falls out of the through hole and lands on the surface of the adjacent storage basket 4 below. Under the buffering effect of the third spring 17, the impact force on the storage basket 4 is reduced, thereby preventing the reagent bottle 5 from shaking. At the same time, the tray 3 is released by directly de-energizing the electromagnet 14, which reduces the operation steps and improves the convenience of use.

[0069] When it is necessary to remove the storage basket 4 located below the top tray 3 again, the partition 6 is moved to the surface of the bottom tray 3 of the corresponding storage basket 4 by the output end of the telescopic rod, and the locking rod 11 on the side wall of the tray 3 is aligned with the locking groove 9. Then, the electromagnet 14 is energized to fix the tray 3 and the partition 6 together.

[0070] Then, control the telescopic rod to retract, which will move the storage basket 4 and the tray 3 located above the storage basket 4 upwards, making it easier for staff to remove the tray 3.

[0071] like Figure 2 As shown, a limit sleeve 18 is vertically fixedly installed on the inner top wall of tank 1.

[0072] During the retraction of the electric telescopic rod 7, the storage basket 4 is driven into the limiting sleeve 18 through the partition 6 and the support plate 3.

[0073] When the partition 6 moves upward to its maximum extent, the bottom wall of the limiting sleeve 18 fits against the top wall of the partition 6, thereby reducing the amount of heat exchange between the inside of the tank 1 and the outside when the staff takes out the storage basket 4, preventing a large amount of outside gas from entering the tank 1, and thus reducing the amount of liquid nitrogen volatilization in the tank 1.

[0074] like Figure 4 , Figure 5 As shown, a mounting groove is provided on the top wall of the pallet 3, and a mounting hole is provided vertically on the bottom wall of the mounting groove. A top rod 19 is vertically slidably inserted into the mounting hole. A top plate 20 is slidably installed in the mounting groove and fixedly connected to the bottom wall of the top rod 19. A second driving mechanism for driving the top plate 20 to move upward is provided on the tank body 1.

[0075] The second driving mechanism includes a bar magnet 21 fixedly installed on the inner wall of the limiting sleeve 18, and a push rod 19 made of magnetic material, with the top end of the push rod 19 attracting the bottom end of the bar magnet 21.

[0076] When the electric telescopic rod 7 is in the extended state, under the action of gravity, the top rod 19 is in the retracted mounting hole state, and the top wall of the top plate 20 and the top wall of the support plate 3 are on the same plane.

[0077] As the electric telescopic rod 7 retracts, the distance between the bar magnet 21 and the top rod 19 gradually decreases. When the partition 6 is in contact with the bottom wall of the limiting sleeve 18, the top rod 19 moves upward under the attraction between the bar magnet 21 and the top rod 19, and drives the storage basket 4 to move upward through the top plate 20. This makes it easier for staff to take out the storage basket 4 when the cover 23 is opened, shortens the time required to take out the storage basket 4, reduces the heat exchange between the inside of the tank 1 and the outside air, and reduces the amount of liquid nitrogen volatilized in the tank 1.

[0078] like Figure 6 As shown, the mounting bracket 2 includes a base 201 and four guide rods 202. The guide rods 202 are vertically fixed on the top wall of the base 201 and are evenly distributed around the circumference.

[0079] Since the storage basket 4 is placed only on the surface of the tray 3, by setting multiple circumferentially distributed guide rods 202, the storage basket 4 can be placed between multiple guide rods 202, restricting the position of the storage basket 4 and preventing the storage basket 4 from falling off the surface of the tray 3.

[0080] Instructions for use: First, place the tray 3 onto the mounting frame 2, then place the storage basket 4 on the top wall of each tray 3, and place the reagent bottle 5 containing stem cells into the storage basket 4.

[0081] Then, liquid nitrogen is injected into the tank 1, and the mounting bracket 2 with the tray 3 and the storage basket 4 is placed into the tank 1. The opening 22 of the tank 1 is then sealed with the cap 23.

[0082] When taking out the sample, the telescopic rod is activated first, and the output end of the telescopic rod drives the partition 6 to move down. When the partition 6 moves down and is fitted outside the tray 3, the slot 9 is aligned with the rod 11.

[0083] Then, the electromagnet 14 is energized. At this time, the electromagnet 14 is aligned with the first permanent magnet 12. Under the attraction between the electromagnet 14 and the first permanent magnet 12, the first permanent magnet 12 drives the locking rod 11 to insert into the locking slot 9. The first spring 13 is gradually stretched, so that the partition 6 and the support plate 3 can be fixed together through the cooperation of the locking rod 11 and the locking slot 9.

[0084] Then, the telescopic rod is controlled to retract. During this process, the low-temperature air above the partition 6 in the tank 1 is discharged into the space below the partition 6 through the pressure relief valve 8, thereby reducing the amount of cold air loss when the cover 23 is opened. Until the partition 6 moves the storage basket 4 on the surface of the tray 3 into the opening 22, the cover 23 is opened, the storage basket 4 on the surface of the tray 3 is taken out, and the tray 3 is still fixed to the partition 6 to prevent liquid nitrogen from directly contacting the outside air.

[0085] During the process of the partition 6 moving the storage basket 4 upwards via the tray 3 and opening the cover 23 to remove the storage basket 4, the partition 6 and the tray 3, made of heat-insulating material, prevent the liquid nitrogen located below the partition 6 from directly contacting the outside air, reducing the probability of liquid nitrogen absorbing heat and preventing liquid nitrogen from evaporating, thus saving costs.

[0086] When the upper storage basket 4 is taken out, the tray 3 used to support the removed storage basket 4 must still be fixed in the through hole before the opening 22 is sealed with the cover 23 in order to prevent liquid nitrogen from evaporating.

[0087] After the cap 23 is installed in the opening 22, the electromagnet 14 is de-energized. At this time, the tray 3 falls out of the through hole and lands on the surface of the adjacent storage basket 4 below. Under the buffering effect of the third spring 17, the impact force on the storage basket 4 is reduced, thereby preventing the reagent bottle 5 from shaking. At the same time, the tray 3 is released by directly de-energizing the electromagnet 14, which reduces the operation steps and improves the convenience of use.

[0088] When it is necessary to remove the storage basket 4 located below the top tray 3 again, the partition 6 is moved to the surface of the bottom tray 3 of the corresponding storage basket 4 by the output end of the telescopic rod, and the locking rod 11 on the side wall of the tray 3 is aligned with the locking groove 9. Then, the electromagnet 14 is energized to fix the tray 3 and the partition 6 together.

[0089] Then, the telescopic rod is controlled to retract, which moves the storage basket 4 and the tray 3 above it upwards, making it easier for staff to remove the tray 3. During the retraction of the electric telescopic rod 7, the storage basket 4 is moved into the limiting sleeve 18 through the partition 6 and the tray 3.

[0090] When the partition 6 moves upward to its maximum extent, the bottom wall of the limiting sleeve 18 fits against the top wall of the partition 6, thereby reducing the amount of heat exchange between the inside of the tank 1 and the outside when the staff removes the storage basket 4, preventing a large amount of outside gas from entering the tank 1, and thus reducing the amount of liquid nitrogen volatilization inside the tank 1. When the electric telescopic rod 7 is in the extended state, under the action of gravity, the top rod 19 is in the retracted mounting hole state, and the top wall of the top plate 20 and the top wall of the support plate 3 are on the same plane.

[0091] As the electric telescopic rod 7 retracts, the distance between the bar magnet 21 and the top rod 19 gradually decreases. When the partition 6 is in contact with the bottom wall of the limiting sleeve 18, the top rod 19 moves upward under the attraction between the bar magnet 21 and the top rod 19, and drives the storage basket 4 to move upward through the top plate 20. This makes it easier for staff to take out the storage basket 4 when the cover 23 is opened, shortens the time required to take out the storage basket 4, reduces the heat exchange between the inside of the tank 1 and the outside air, and reduces the amount of liquid nitrogen volatilized in the tank 1.

[0092] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A stem cell storage, preservation, and extraction device, comprising a tank (1); Its features are: It also includes a mounting bracket (2) and a tray (3), wherein the surface of the tray (3) is evenly provided with holes (15), and the tray (3) is fitted onto the mounting bracket (2) through the holes (15); A tray (3) is evenly slidably mounted on the mounting frame (2), and a storage basket (4) is detachably mounted on the top wall of the tray (3), and a reagent bottle (5) is placed in the storage basket (4). A partition (6) is slidably installed inside the tank (1). A through hole is provided on the top wall of the partition (6), and the through hole cooperates with the support plate (3). An electric telescopic rod (7) with its output end fixedly connected to the partition plate (6) is fixedly inserted into the inner top wall of the tank (1). Furthermore, the partition plate (6) is provided with a fixing mechanism for fixing the tray (3) in the through hole; Two pressure relief valves (8) are embedded in the partition (6), and the output ends of the two pressure relief valves (8) are located on the top wall and bottom wall of the partition (6), respectively. The fixing mechanism includes a slot (9) opened on the side wall of the through hole; the side wall of the support plate (3) is provided with an insertion hole (10), and a locking rod (11) that cooperates with the slot (9) is slidably installed in the insertion hole (10), and the partition plate (6) is provided with a first driving mechanism for driving the locking rod (11) to move. The first driving mechanism includes a first permanent magnet (12) fixedly installed on the side wall of the lever (11), and a first spring (13) fixedly installed between the lever (11) and the side wall of the insertion hole (10). The partition (6) has a cavity, and the cavity is provided with an electromagnet (14) that attracts the first permanent magnet (12). The pressure relief valve (8) includes a sleeve (801), a second spring (803), and a baffle (802); The sleeve (801) is fixedly embedded in the partition plate (6), and the two ends of the sleeve (801) are the input end and the output end, respectively; The baffle (802) is hinged to the output end of the sleeve (801); The two ends of the second spring (803) are fixedly connected to the inner wall of the sleeve (801) and the top wall of the baffle (802), respectively; The mounting bracket (2) includes a base (201) and four guide rods (202). The guide rods (202) are vertically fixed on the top wall of the base (201) and are evenly distributed in a circular pattern.

2. The stem cell storage, preservation, and extraction device according to claim 1, characterized in that: The top wall of the pallet (3) is provided with an installation groove, the bottom wall of the installation groove is provided with a vertical installation hole, a top rod (19) is vertically slidably inserted into the installation hole, a top plate (20) is slidably installed in the installation groove and fixedly connected to the bottom wall and the top rod (19), and the tank body (1) is provided with a second driving mechanism for driving the top plate (20) to move upward. The second driving mechanism includes a bar magnet (21) fixedly installed on the inner wall of the limiting sleeve (18), the top rod (19) is made of magnetic material, and the top end of the top rod (19) attracts the bottom end of the bar magnet (21).

3. The stem cell storage, preservation, and extraction device according to claim 2, characterized in that: The surface of the storage basket (4) is evenly provided with holes (15), and the top wall of the tray (3) is provided with a flow guide groove (16).

4. The stem cell storage, preservation, and extraction device according to claim 3, characterized in that: The storage basket (4) has a third spring (17) that is evenly fixed on the top wall and cooperates with the upper support plate (3).

5. The stem cell storage, preservation, and extraction device according to claim 4, characterized in that: A limiting sleeve (18) is vertically fixedly installed on the inner top wall of the tank (1).

Images