Liquid nitrogen tank for storing stem cells

Abstract

The liquid nitrogen tank for storing the stem cells comprises a tank body, a lifting tool and a cover body, and a tank opening is formed in the top of the tank body; the multiple lifting tools are inserted into the inner side of the can body, each lifting tool comprises a disc-shaped base and a lifting rod, the lifting rods are arranged on the outer sides of the disc-shaped bases and abut against the inner wall of the can opening to penetrate upwards, the shape of an enclosed area between the multiple lifting rods is matched with the shape of the disc-shaped bases, and a guide channel is formed. The guiding device is used for guiding the lifting tool to slide relative to the disc-shaped seat when the lifting tool moves downwards or upwards. According to the utility model, through the structural arrangement between the liquid nitrogen tank opening and the lifting rods, a guide channel is formed in an enclosed area among the plurality of lifting rods from the tank body to the tank opening, and the disc-shaped seat is guided to slide, so that the lifting tool is not easy to incline and is not easy to collide with the inner wall of the tank body in the upward lifting and downward placing processes; and the lifting and placing stability of the lifting tool in the liquid nitrogen tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stem cell storage, in particular to a liquid nitrogen tank for storing stem cells. Background Art

[0002] In the storage of stem cells, it is necessary to maintain their activity. Generally, liquid nitrogen tanks are used for storage. Stem cells are stored at -196°C deep cryogenic temperature. Stem cell metabolic activity is almost stopped at deep cryogenic temperature. Under correct storage operation, tissue cells are rarely damaged, and the long-term preservation cell survival rate is above 80%. In order to facilitate the taking of stem cells, liquid nitrogen tanks are often equipped with lifting tools for containing and extracting stem cells in liquid nitrogen tanks. For example, Chinese Patent 202121068443.6 discloses a liquid nitrogen tank for stem cell storage, including a liquid nitrogen tank body, a sealing port is provided on the top of the liquid nitrogen tank body, and a stem cell bag lifting tool, the stem cell bag lifting tool includes a lifting rod and a carrier provided at one end of the lifting rod, the sealing port is used for the stem cell bag lifting tool to extend into the liquid nitrogen tank body, and the annular boss is provided with a stabilizing member to prevent the lifting rod from moving.

[0003] In the above prior art, due to the depth of the liquid nitrogen tank, the lifting rod on the lifting tool needs to extend upward to the tank mouth to facilitate extraction. However, the tank mouth of the liquid nitrogen tank is narrow, and the lifting tool is easily tilted during lifting and inserting, resulting in shaking and collision, which affects the stem cells. Therefore, how to stably extract and place the lifting tool in the liquid nitrogen tank is a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies, to provide a liquid nitrogen tank for storing stem cells, and to solve the technical problem of how to stably extract and place the extracts in the liquid nitrogen tank in the prior art.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a liquid nitrogen tank for storing stem cells, comprising:

[0007] A tank body, with a tank opening at the top;

[0008] A lifting tool, a plurality of the lifting tools are inserted into the inner side of the tank body, the lifting tool comprises a disc-shaped seat and a lifting rod, the lifting rod is arranged on the outer side of the disc-shaped seat and passes upward against the inner wall of the tank mouth, and the enclosed area between the plurality of lifting rods matches the shape of the disc-shaped seat to form a guide channel for guiding the lifting tool to slide relative to the disc-shaped seat when the lifting tool moves downward or upward; and

[0009] The cover body is inserted into the can mouth.

[0010] In some embodiments, it also includes a guide support, which includes a guide strip and an intermediate seat, a plurality of the guide strips correspond to the handles one by one and are arranged in a circular distribution on the outer circumference of the intermediate seat, a socket is provided at the top of the intermediate seat, a slide is provided at the top of the guide strip, and the slide extends to the socket and passes through the socket; a slider is provided at the bottom of the disc-shaped seat, the slider is used to be plugged into the socket and slide along the slide; an odd number of the handles are inserted into the inner side of the tank body in a circular distribution.

[0011] In some embodiments, a plurality of slots are provided on the top of the tank mouth, a handle is laterally extended from the top end of the lifting rod, and the handle is plugged into the slots in a one-to-one correspondence.

[0012] In some embodiments, a storage rack is disposed on the top of the disc-shaped seat, and the length and width of the storage rack are not greater than the diameter of the disc-shaped seat.

[0013] In some embodiments, a reagent kit is inserted into the inner side of the rack.

[0014] In some embodiments, a security cover is further included. The outer side of the tank body is provided with an external thread. The security cover is sleeved on the outside of the tank mouth and is threadably connected to the tank body through the external thread.

[0015] In some embodiments, the cover body is provided with a plurality of strip grooves, and the lifting rods are plugged into the strip grooves in a one-to-one correspondence.

[0016] In some embodiments, the socket is circular in shape, and the shape of the slider matches the shape of the socket.

[0017] In some embodiments, the cross-sections of the slideway and the slider are both in an inverted T shape.

[0018] In some embodiments, the number of the holders is five.

[0019] Compared with the prior art, the liquid nitrogen tank for storing stem cells provided by the utility model, through the structural arrangement between the mouth of the liquid nitrogen tank and the lifting rods, the enclosed area between the multiple lifting rods forms a guide channel from the tank body to the tank mouth, and the sliding guidance of the disc-shaped seat makes it difficult for the lifting tool to tilt and collide with the inner wall of the tank body during the process of lifting up and placing down, thereby improving the stability of the extraction and placement of the lifting tool in the liquid nitrogen tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional exploded view of a liquid nitrogen tank for storing stem cells provided by an embodiment of the utility model;

[0021] Figure 2It is a partial sectional three-dimensional diagram of a liquid nitrogen tank for storing stem cells provided by an embodiment of the utility model;

[0022] Figure 3 It is a partial cross-sectional top view of a liquid nitrogen tank for storing stem cells provided by an embodiment of the utility model;

[0023] Figure 4 It is a partial cross-sectional top view of the moving tool of the liquid nitrogen tank for storing stem cells provided by an embodiment of the utility model;

[0024] Figure 5 It is a front view of the tool provided by the embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. tank body; 101. tank mouth; 102. slot;

[0027] 2. Carrying tool; 21. Disc seat; 22. Lifting rod; 23. Sliding block; 24. Carrying handle; 25. Storage rack; 26. Reagent box;

[0028] 3. Cover body; 301. Cover body;

[0029] 4. Guide support; 41. Guide strip; 42. Intermediate seat; 401. Socket; 402. Slideway;

[0030] 5. Encryption cover. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] In order to solve the technical problem of how to stably extract and place the extractors in the liquid nitrogen tank, the utility model provides a liquid nitrogen tank for storing stem cells, which can achieve stable extraction and placement of the extractors in the liquid nitrogen tank.

[0033] It should be noted that the liquid nitrogen tank for storing stem cells described in the present invention is used for but not limited to storing stem cells. For the convenience of explanation, in the present invention, only the liquid nitrogen tank for storing stem cells is used for storing stem cells as an example for explanation. The principle of using the liquid nitrogen tank for storing stem cells in other types of equipment is substantially the same as the principle of using it in storing stem cells, and will not be described in detail here.

[0034] See also Figure 1 , Figure 1The three-dimensional exploded diagram of a liquid nitrogen tank for storing stem cells in one embodiment of the utility model, the liquid nitrogen tank for storing stem cells comprises a tank body 1, a lifting tool 2 and a cover body 3. A tank mouth 101 is provided on the top of the tank body 1, the tank mouth 101 is used for the lifting tool 2 to enter and exit, and its inner diameter is only provided for one lifting tool 2 to enter and exit at a time, and the cover body 3 is inserted in the tank mouth 101 for sealing. A plurality of the lifting tools 2 are inserted in a circular distribution on the inner side of the tank body 1, and when inserted, they are inserted from the tank mouth 101 in sequence, and then arranged around the tank body 1 to form a circular distribution. The number of the lifting tools 2 is an odd number, preferably, the number of the lifting tools 2 is five, and the odd number of lifting tools 2 is in a circular distribution, and the lifting tools 2 are horizontally pushed to the center position just below the tank mouth 101, and the lifting rod 22 will not be interfered with by the lifting rod 22 of the opposite lifting tool 2. The lifting tool 2 includes a disc-shaped seat 21 and a lifting rod 22. The disc-shaped seat 21 is disc-shaped. The lifting rod 22 is arranged on the outer side of the disc-shaped seat 21 and passes upward along the inner wall of the tank mouth 101. The disc-shaped seat 21 can be moved by grasping the lifting rod 22 and passed upward from the tank mouth 101. The top of the disc-shaped seat 21 is used to accommodate the stem cell carrier. The diameter of the enclosed area between several lifting rods 22 matches the diameter of the disc-shaped seat 21, which is used to guide the lifting tool 2 to slide relative to the disc seat 21 when moving downward or upward.

[0035] In this embodiment, when the lifting rod 22 is grasped and moved up or down, it is necessary to pass through the tank mouth 101 for taking out or putting in. When the lifting rod 22 is against the inner wall of the tank mouth 101, the circle with the maximum outer diameter that it can pass through is a concentric circle that is tangent to the outer circles of all the lifting rods 22 and is located in the tank mouth 101, that is, the enclosed area between several lifting rods 22. When the outer diameter of the disc seat 21 is equal to the inner diameter of the concentric circle, it slides to this area and is just tangent to several lifting rods 22. A guide channel for the upward movement of the disc seat 21 is formed by multiple lifting rods 22, which has the function of sliding guidance, thereby avoiding shaking and collision with the inner wall of the tank body when moving up or down, and improving the stability of extraction and placement.

[0036] In one embodiment, see Figure 2 , Figure 3 and Figure 4In order to have a certain stability when the lateral position is adjusted and the slider 23 is placed in the inner part of the tank body 1 in a circumferential distribution, the guide support 4 is also included, and the bottom of the disc-shaped seat 21 is provided with a slider 23, and the slider 23 is used to be plugged into the socket 401 and slide along the slide 402. The guide support 4 includes a guide bar 41 and an intermediate seat 42. A plurality of guide bars 41 correspond to the handle 2 one by one and are arranged in a circumferential distribution on the outer periphery of the intermediate seat 42. The top of the intermediate seat 42 is provided with a socket 401. When the handle 2 moves vertically downward, it moves to the bottom and inserts the slider 23 into the socket 401 for positioning. The top of the guide bar 41 is provided with a slide 402, and the slide 402 extends to the socket 401 and is connected with the socket 401. Then, according to the direction to which it needs to move, it slides along the slide 402 on the guide bar 41 in the direction, so as to stably move to the preset position.

[0037] In this embodiment, the socket 401 is located directly below the axis of the tank mouth 101. During operation, the lifting tool 2 is first moved vertically to avoid skewing and collision. After the slider 23 is inserted into the socket 401, it is moved horizontally along the slide 402, thereby guiding the entire extraction and placement process of the lifting tool 2 and stabilizing its operation.

[0038] In one embodiment, see Figure 1 In order to assist in locating the distribution position of the carrying tool 2 and facilitate grasping the carrying tool 2, a plurality of slots 102 are provided on the top of the tank mouth 101, and a handle 24 is laterally extended from the top of the lifting rod 22, and the handle 24 is plugged into the slot 102 in a one-to-one correspondence. By plugging the handle 24 into the slot 102, the carrying tool 2 can be assisted in positioning, and the handle 24 can also facilitate grasping the carrying tool 2.

[0039] In this embodiment, the handle 24 is in the shape of a rod, and its length passes through the slot 102 and extends outside the slot 102, so as to facilitate grabbing and lifting.

[0040] In one embodiment, see Figure 1 and Figure 5 In order to place the stem cells, a shelf 25 is provided on the top of the disc-shaped seat 21, and the length and width of the shelf 25 are not greater than the diameter of the disc-shaped seat 21 to avoid collision and interference between the mobile carrier 2 and the carrier 2 on the side.

[0041] In this embodiment, the rack 25 is a multi-layer frame structure, and each layer has openings on four sides, into which the stem cell carrier can be placed.

[0042] In one embodiment, see Figure 1 and Figure 5In order to store stem cells, a reagent kit 26 is inserted into the inner side of the rack 25. The reagent kit 26 is used to place a reagent tube containing stem cells. The reagent kit 26 is inserted into the opening on the rack 25 and placed on the carrier 2.

[0043] In one embodiment, see Figure 1 In order to improve the sealing performance of the liquid nitrogen tank, a cryptographic cover 5 is further included. The outer side of the tank body 1 is provided with an external thread. The cryptographic cover 5 is sleeved on the outside of the tank mouth 101, and the cover body 3 is sleeved therein, and is threadedly connected to the tank body 1 through the external thread. The cryptographic cover 5 is used to cover the cover body 3 with another layer, thereby improving the sealing performance.

[0044] In one embodiment, see Figure 1 In order to reduce the gap that may be generated between the lifting rod 22 and the cover body 3 when closing the cover body 3, a plurality of strip grooves 301 are opened on the cover body 3, and the lifting rod 22 is plugged into the strip grooves 301 one by one, thereby sealing, reducing the gap and improving the sealing effect.

[0045] In one embodiment, see Figure 3 and Figure 5 The socket 401 is circular in shape, and the shape of the slider 23 matches the shape of the socket 401 , so that after being inserted into the socket 401 , the slider 23 can also be rotated and reversed, so as to facilitate the adjustment of the position of the lifting rod 22 .

[0046] In one embodiment, see Figure 5 In order to limit its up and down movement after being inserted into the slideway 402, the cross-sections of the slideway 402 and the slider 23 are both in an inverted T shape, so that when the slider 23 is inserted into the slideway 402, the up and down movement is restricted, making its horizontal movement more stable.

[0047] In order to better understand the present invention, the following Figures 1 to 5The technical solution of the utility model is described in detail: when placing the lifting tool 2, the lifting tool 2 is moved vertically downward along the tank mouth 101 to the bottom, the slider 23 is inserted into the socket 401, and then slides along the slide 402, and the position of the lifting rod 22 is adjusted, and the disc-shaped seat 21 is placed in the tank body 1, and is separated from the bottom of the tank mouth 101, and the lifting rod 22 is close to the inner wall of the tank mouth 101, and the operation is carried out in sequence to make the five lifting tools 2 distributed in a circle in the tank body 1; when extracting, the handle 24 is pushed horizontally, and under the sliding guidance of the slider 23 and the slide 402, the slider 23 is moved horizontally to the position of the socket 401, and the disc-shaped seat 21 is limited by the other lifting rods 22 so that it is located directly below the tank mouth 101, and then lifted upward, and the disc-shaped seat 21 is slid upward along the other lifting rods 22, so that it can be stably extracted.

[0048] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A liquid nitrogen tank for storing stem cells, characterized in that: include: A tank body, with a tank opening at the top; A lifting tool, a plurality of the lifting tools are inserted into the inner side of the tank body, the lifting tool comprises a disc-shaped seat and a lifting rod, the lifting rod is arranged on the outer side of the disc-shaped seat and passes upward against the inner wall of the tank mouth, and the enclosed area between the plurality of lifting rods matches the shape of the disc-shaped seat to form a guide channel for guiding the lifting tool to slide relative to the disc-shaped seat when the lifting tool moves downward or upward; and The cover body is inserted into the can mouth.

2. The liquid nitrogen tank for storing stem cells according to claim 1, characterized in that: It also includes a guide support, which includes a guide strip and an intermediate seat. A plurality of the guide strips correspond to the handles one by one and are arranged in a circular distribution on the outer circumference of the intermediate seat. A socket is provided on the top of the intermediate seat, and a slide is provided on the top of the guide strip. The slide extends to the socket and passes through the socket. A slider is provided at the bottom of the disc-shaped seat, and the slider is used to be plugged into the socket and slide along the slide. An odd number of the handles are inserted on the inner side of the tank body in a circular distribution.

3. The liquid nitrogen tank for storing stem cells according to claim 2, characterized in that: A plurality of slots are provided on the top of the can mouth, a handle is horizontally extended from the top end of the lifting rod, and the handle is plugged into the slots in a one-to-one correspondence.

4. The liquid nitrogen tank for storing stem cells according to claim 3, characterized in that: A storage rack is arranged on the top of the disc-shaped seat, and the length and width of the storage rack are not greater than the diameter of the disc-shaped seat.

5. The liquid nitrogen tank for storing stem cells according to claim 4, characterized in that: A reagent box is inserted into the inner side of the storage rack.

6. The liquid nitrogen tank for storing stem cells according to claim 5, characterized in that: It also includes a encryption cover. The outer side of the tank body is provided with an external thread. The encryption cover is sleeved on the outside of the tank mouth and is threadedly connected with the tank body through the external thread.

7. The liquid nitrogen tank for storing stem cells according to claim 6, characterized in that: The cover body is provided with a plurality of strip grooves, and the lifting rods are plugged into the strip grooves in a one-to-one correspondence.

8. The liquid nitrogen tank for storing stem cells according to claim 7, characterized in that: The socket is circular in shape, and the shape of the slider matches the shape of the socket.

9. The liquid nitrogen tank for storing stem cells according to claim 8, characterized in that: The cross sections of the slideway and the slider are both in an inverted T shape.

10. The liquid nitrogen tank for storing stem cells according to claim 9, characterized in that: The number of the tools is five.

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