Portable stem cell transfer storage tank

Abstract

The invention relates to the field of biological sample storage and transportation, in particular to a portable stem cell transfer storage tank which comprises a storage tank body, a partition plate is arranged in the storage tank body and divides the interior of the storage tank body into a liquid-phase cooling area and a gas-phase cooling area, the liquid-phase cooling area is located below the gas-phase cooling area, and the gas-phase cooling area is located below the gas-phase cooling area. The storage tank body is of a titanium alloy honeycomb interlayer structure, the titanium alloy honeycomb interlayer comprises an outer titanium alloy shell, a middle aerogel heat insulation layer and an inner medical-grade stainless steel cavity, and the titanium alloy honeycomb interlayer is integrally formed through a vacuum brazing process. The stem cell double-mode storage device has the effects of realizing stem cell double-mode storage, convenient transportation and long-time preservation.

Description

Technical Field

[0001] This application relates to the field of biological sample storage and transportation, and in particular to a portable stem cell transport and storage container. Background Technology

[0002] In the biomedical field, stem cell research and application have made significant progress in recent years, demonstrating enormous potential in disease treatment and tissue repair. With the continuous development of stem cell technology, the demand for stem cell transportation and storage is also increasing. Reliable transportation and storage devices can ensure that stem cells remain viable during transportation, thereby guaranteeing the smooth progress of subsequent clinical applications and research.

[0003] Related technologies can be found in Chinese Patent No. CN216102317U, which discloses a gas-phase liquid nitrogen transport device for biological stem cells. This device includes a base plate, a gas-phase liquid nitrogen tank, and a stem cell storage box. The gas-phase liquid nitrogen tank is placed on the bottom side of the stem cell storage box, utilizing the low-temperature properties of liquid nitrogen to maintain the low-temperature environment within the storage box. Other methods utilize liquid-phase storage, placing stem cells in a liquid culture medium. This approach provides a relatively stable liquid environment for the stem cells.

[0004] Regarding the aforementioned technologies, liquid-phase storage typically involves placing multiple different types of stem cells together. If the plastic tube containing the stem cells ruptures, the different types of stem cells will mix together. Another method, gas-phase storage, uses a common single-shell structure. Its insulation and protection performance are relatively limited, and to cope with the high pressure inside the shell, the shell requires high thickness and material specifications, resulting in a large overall weight and inconvenient manual handling. Summary of the Invention

[0005] To achieve dual-mode storage, lightweight transport, and long-term preservation of stem cells, this application provides a portable stem cell transport and storage container.

[0006] This application provides a portable stem cell transport and storage container, which adopts the following technical solution: A portable stem cell transport storage container includes a storage container body. The storage container body is provided with a partition, which divides the interior of the storage container body into a liquid phase cooling zone and a gas phase cooling zone. The liquid phase cooling zone is located below the gas phase cooling zone. The storage container body adopts a titanium alloy honeycomb sandwich structure. The titanium alloy honeycomb sandwich includes an outer titanium alloy shell, an intermediate aerogel insulation layer, and an inner medical-grade stainless steel cavity. The titanium alloy honeycomb sandwich is integrally formed by vacuum brazing.

[0007] By adopting the above technical solution, the partition divides the interior of the storage tank into a liquid-phase cooling zone and a gas-phase cooling zone, with the liquid-phase cooling zone located below the gas-phase cooling zone. This achieves dual-mode storage of liquid and gas phases, avoiding the cross-contamination problem of different stem cells when stored in liquid phase alone, and also utilizing the characteristics of gas-phase storage to meet the storage needs of different stem cells. Simultaneously, the storage tank body adopts a titanium alloy honeycomb sandwich structure, which includes an outer titanium alloy shell, a middle aerogel insulation layer, and an inner medical-grade stainless steel cavity. It is integrally formed using a vacuum brazing process, increasing the storage tank's impact resistance while reducing its overall weight. This ensures sufficient mechanical strength while achieving a lightweight design, facilitating portability and transportation, reducing the difficulty of manual transfer, and extending the storage time of stem cells. Furthermore, the aerogel insulation layer helps reduce heat transfer, improving the storage tank's thermal insulation performance, thereby reducing the slow-release rate and better maintaining the activity of stem cells.

[0008] Optionally, a porous ceramic carrier and a baffle are fixedly provided at the end of the partition away from the liquid phase cooling zone, with the porous ceramic carrier located inside the baffle, and a support frame for supporting the cell storage tube is fixedly provided at the bottom of the liquid phase cooling zone.

[0009] By adopting the above technical solution, the porous ceramic carrier set at the end of the partition away from the liquid phase cooling zone can adsorb liquid nitrogen for cooling the gas phase cooling zone. The baffle can prevent the porous ceramic carrier from shifting and liquid nitrogen from splashing out, ensuring the stable operation of the gas phase cooling zone. The support frame set at the bottom of the liquid phase cooling zone can support the stem cell storage tube, preventing the stem cell storage tube from directly contacting the bottom of the liquid phase cooling zone, reducing the impact of factors such as uneven temperature or impurities at the bottom on the stem cells in the cell storage tube, and further ensuring the stability of the stem cell storage environment.

[0010] Optionally, a pressure relief chamber is provided on the outer side of the storage tank body, and independent pressure relief valves are provided for the liquid phase cooling zone and the gas phase cooling zone, respectively. The pressure relief valve is connected to a pressure relief pipe and is located in the pressure relief chamber. The pressure relief valve is controlled to open and close by an elastic sealing diaphragm. The pressure relief chamber is connected to an exhaust pipe, and the exhaust pipe is connected to an exhaust valve.

[0011] By adopting the above technical solution, a pressure relief chamber is installed on the outside of the storage tank body, and independent pressure relief valves are installed in the liquid phase cooling zone and the gas phase cooling zone, respectively, and connected to pressure relief pipes. This allows for independent monitoring and release of pressure in the two cooling zones. The relief valves are controlled by elastic sealing diaphragms, which can accurately sense pressure changes and promptly release pressure when it reaches a certain level, preventing the storage tank from bursting due to excessive pressure. The pressure relief chamber collects the released gas, which is then safely discharged through a connected exhaust pipe and exhaust valve, ensuring the safety of the storage tank during use. Especially during gas phase storage, it effectively prevents dangerous situations caused by gradually increasing internal pressure, ensuring a stable and reliable stem cell storage environment and thus guaranteeing the activity of stem cells during transportation. Simultaneously, the gas in the pressure relief chamber reduces the influence of external temperature on the internal temperature of the storage tank body, slowing the release rate and extending the storage time of stem cells.

[0012] Optionally, the storage tank body is covered with a composite shell, the pressure relief chamber is located between the storage tank body and the composite shell, the exhaust pipe passes through the composite shell and is connected to the exhaust valve, and the composite shell includes an impact-resistant layer, a buffer layer and a heat-reflective layer arranged sequentially from the outside to the inside.

[0013] By adopting the above technical solutions, the pressure inside the storage tank can be effectively stabilized, avoiding dangerous situations caused by excessive pressure. The exhaust pipe passes through the composite shell and connects to the exhaust valve, facilitating pressure release operations. The impact-resistant layer of the composite shell can resist external impacts and protect the storage tank from damage. The buffer layer can absorb vibration energy and play a good buffering role. The heat-reflective layer can block radiative heat transfer. The three work together to achieve the dual functions of shock absorption and heat insulation, thereby better maintaining the activity of stem cells during transportation, adapting to a wide range of external environmental temperature changes, and withstanding a certain height of drop impact. At the same time, it helps to achieve a lightweight design of the storage tank, making it easy to carry and transport. It can also ensure that the storage tank meets the various performance requirements and meets the needs of long-term unattended transfer.

[0014] Optionally, the impact-resistant layer is a carbon fiber reinforced layer, the buffer layer is an aerogel layer, the heat-reflective layer is an aluminum foil heat-reflective film, and the composite shell is integrally formed by vacuum brazing.

[0015] By adopting the above technical solution, the carbon fiber reinforcement layer can provide good impact resistance, the aerogel layer can absorb vibration energy, and the aluminum foil heat reflective film can block radiative heat transfer. The composite shell composed of the three is integrally formed by vacuum brazing process, and its synergistic effect can achieve the dual functions of shock absorption and heat insulation. This composite shell enables the storage tank to better adapt to changes in external ambient temperature and withstand drop impacts from a certain height, thereby effectively protecting the stem cells inside the storage tank, helping to improve the activity retention rate of stem cells during transportation, and meeting the needs of long-term unattended transportation.

[0016] Optionally, a detection component is also included, comprising a temperature sensor and a pressure sensor, for detecting the temperature and pressure inside the liquid-phase cooling zone and the gas-phase cooling zone.

[0017] By adopting the above technical solution, the temperature and pressure sensors in the detection component can accurately detect the temperature and pressure inside the liquid-phase cooling zone and the gas-phase cooling zone, allowing operators to understand the temperature and pressure status of the two zones in real time. This enables them to adjust the corresponding parameters in a timely manner based on the detection data, ensuring that stem cells are stored in a suitable temperature and pressure environment. This helps maintain the activity of stem cells, further improves the activity retention rate of stem cells during transportation, better adapts to temperature changes in the external environment, and meets the needs of long-term unattended transportation.

[0018] Optionally, the storage tank body includes a tank body and a tank cover. A medical-grade silicone sealing ring is fixedly provided at one end of the tank cover near the tank body. The medical-grade silicone sealing ring is in contact with the inner wall of the gas phase cooling zone. Several screws are fixedly provided at the upper end of the tank body. The screws pass through the tank cover and are threadedly connected to nuts. A handle is rotatably connected to the end of the tank cover away from the partition.

[0019] By adopting the above technical solution, the medical-grade silicone sealing ring fits snugly against the inner wall of the vapor phase cooling zone, and the screw and nut securely fix the lid to the tank body. This effectively prevents gas leakage in the vapor phase cooling zone, ensuring the sealing and stability of the vapor phase storage environment, thereby guaranteeing environmental safety during stem cell vapor phase storage and preventing external factors from affecting stem cell activity. The handle connected to the end of the lid away from the partition makes it easy for operators to grip, making the transport of the storage tank easier and more convenient. This greatly improves the convenience of transportation and the portability of the transport storage tank, while also facilitating manual transport.

[0020] Optionally, the partition is slidably connected to the tank body along the axial direction of the tank body, a number of connecting rods are fixed between the partition and the tank cover, a limiting ring is fixed on the inner wall of the tank, the partition is located on the side of the limiting ring close to the tank cover, and a sealing ring is sandwiched between the partition and the limiting ring.

[0021] By adopting the above technical solution, the partition can slide along the axis of the tank, and the partition is fixedly connected to the tank lid by a connecting rod. This allows the partition to move together when the lid is opened, facilitating operations inside the storage tank, such as inserting or removing cell storage tubes. A limiting ring on the inner wall of the tank limits the partition, ensuring it is in the correct position. Simultaneously, a sealing ring sandwiched between the partition and the limiting ring further enhances the sealing of the storage tank, reducing the impact of external factors on the stored stem cells, better ensuring a stable storage environment, helping to extend the storage time of stem cells, and improving the viability retention rate of stem cells during transportation.

[0022] Optionally, a timer is provided at the end of the can lid away from the can body.

[0023] By adopting the above technical solution, a timer can be set at the end of the can lid away from the can body, which can conveniently record the storage time of stem cells in the transport storage tank. Operators can keep track of the storage time of stem cells in a timely manner so that they can further process the stem cells at the appropriate time, thereby better ensuring the activity and quality of stem cells, meeting the need for precise control of stem cell storage time during transportation, and helping to improve the activity retention rate of stem cells during transportation and meet the requirements of long-term unattended transportation.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a partition to separate the liquid phase and gas phase cooling zones, a dual storage mode with physical isolation is achieved, avoiding cross-contamination of stem cells and extending the storage time of stem cells; 2. The titanium alloy honeycomb sandwich structure is integrally molded, which reduces weight while ensuring impact resistance and facilitates manual handling of the transfer storage tank; 3. The composite shell works together to achieve shock absorption and heat insulation, ensuring the activity of stem cell transport, adapting to different environments and impacts, and meeting the requirements of long-term transport. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a portable stem cell transport and storage container.

[0026] Figure 2 yes Figure 1 A longitudinal cross-sectional view.

[0027] Explanation of reference numerals in the attached drawings: 1. Storage tank body; 11. Tank body; 111. Screw; 112. Nut; 12. Tank lid; 121. Medical-grade silicone sealing ring; 122. Handle; 123. Timer; 13. Limiting ring; 2. Baffle; 21. Baffle; 22. Sealing ring; 3. Liquid phase cooling zone; 31. Support frame; 4. Gas phase cooling zone; 41. Porous ceramic carrier; 5. Pressure relief chamber; 51. Pressure relief valve; 52. Pressure relief pipe; 53. Exhaust pipe; 54. Exhaust valve; 6. Composite shell; 7. Detection component; 71. Temperature sensor; 72. Pressure sensor. Detailed Implementation

[0028] The present application will be further described in detail below with reference to all the accompanying drawings.

[0029] This application discloses a portable stem cell transport and storage container.

[0030] Reference Figure 1 and Figure 2A portable stem cell transport and storage container is disclosed, comprising a container body 1. The container body 1 adopts a titanium alloy honeycomb sandwich structure, integrally formed by vacuum brazing. This structure includes an outer titanium alloy shell, a middle aerogel insulation layer, and an inner medical-grade stainless steel cavity. The outer titanium alloy shell has good impact resistance; its hard material can withstand certain external impacts without damage, such as collisions encountered during transportation. Besides titanium alloy, high-strength aluminum alloy or other materials can also be considered as alternatives, as these materials also have good strength and light weight. The middle aerogel insulation layer has excellent thermal insulation performance, effectively preventing heat transfer and maintaining a low-temperature environment inside the storage container. The aerogel insulation layer can be made of nanoporous aerogel felt, which has high porosity and low thermal conductivity. The inner medical-grade stainless steel cavity provides a safe and hygienic storage space for stem cells; medical-grade stainless steel has strong corrosion resistance and will not contaminate the stem cells. These three layers are integrally formed using a vacuum brazing process. While maintaining an impact strength of ≥50MPa, the overall weight is reduced by 40% compared to traditional designs. This ensures the strength of the storage tank while achieving a lightweight design that is easy to carry and transport.

[0031] In other embodiments, the intermediate aerogel insulation layer in the titanium alloy honeycomb sandwich structure of the storage tank body 1 can also be replaced with polyurethane foam insulation material. Polyurethane foam insulation material has good insulation performance and low density, which can reduce the weight of the storage tank to a certain extent. At the same time, its cost is relatively low, which is economical.

[0032] Reference Figure 1 and Figure 2The storage container body 1 includes a container body 11 and a container lid 12. Several screws 111 are fixed to the upper end of the container body 11. The screws 111 pass through the container lid 12 and are threadedly connected to nuts 112. Tightening the nuts 112 securely fixes the container lid 12 to the container body 11. A handle 122 is rotatably connected to the end of the container lid 12 away from the partition 2. The handle 122 facilitates carrying the storage container and can be made of plastic or metal, with a shape designed for comfortable human grip. A timer 123 is located at the end of the container lid 12 away from the container body 11. The timer 123 records the storage time, allowing staff to understand the storage duration of the stem cells and perform further processing at the appropriate time. This better ensures the activity and quality of the stem cells, meets the need for precise control of stem cell storage time during transportation, and helps improve the activity retention rate of stem cells during transportation and the requirements for long-term unattended transport. The timer 123 can be an electronic timer 123 or a mechanical timer 123, selected according to actual needs. A medical-grade silicone sealing ring 121 is fixed to one end of the lid 12 near the body 11. The medical-grade silicone sealing ring 121 fits against the inner wall of the gas phase cooling zone 4, which plays a sealing role. Together with the screw 111 and nut 112, the lid 12 is tightly fixed to the body 11, which can effectively prevent gas leakage in the gas phase cooling zone 4, ensure the sealing and stability of the gas phase storage environment, and thus ensure the environmental safety of stem cell gas phase storage and avoid external factors from affecting stem cell activity.

[0033] Reference Figure 1 and Figure 2 The storage tank body 1 is fitted with a pressure relief chamber 5 on its outer side, located on the outer side wall of the tank body 11. The liquid phase cooling zone 3 and the gas phase cooling zone 4 are each equipped with an independent pressure relief valve 51. The pressure relief valve 51 is connected to a pressure relief pipe 52 and is located within the pressure relief chamber 5. The valve is controlled to open and close by an elastic sealing diaphragm. The pressure relief chamber 5 is connected to an exhaust pipe 53, which is connected to an exhaust valve 54. The pressure relief valve, controlled by the elastic sealing diaphragm, can accurately sense pressure changes and promptly release pressure when it reaches a certain level, preventing the storage tank from bursting due to excessive pressure. The pressure relief chamber 5 serves to collect and release gas, which is then safely discharged through the connected exhaust pipe 53 and exhaust valve 54, ensuring the safety of the storage tank during use. Especially during gas phase storage, it can effectively prevent dangerous situations caused by the gradual increase of internal gas pressure, ensuring a stable and reliable stem cell storage environment, thereby guaranteeing the activity of stem cells during transportation. At the same time, the gas in the pressure relief chamber 5 can reduce the influence of external temperature on the internal temperature of the storage tank body 1, reduce the slow release rate, and extend the storage time of stem cells.

[0034] Reference Figure 2The storage tank body 1 is equipped with a partition 2, which divides the interior of the storage tank body 1 into a liquid phase cooling zone 3 and a gas phase cooling zone 4. The liquid phase cooling zone 3 is located below the gas phase cooling zone 4. This compartmentalized design realizes dual-mode storage of liquid and gas phases, avoids the problem of cross-contamination of stem cells when storing only liquid phase, and also improves the high temperature situation when storing gas phase. At the same time, the liquid nitrogen in the liquid phase cooling zone 3 reduces the temperature of the gas phase cooling zone 4 through the partition 2.

[0035] Reference Figure 2 The partition 2 is slidably connected to the tank body 11 along its axial direction. Several connecting rods are fixed between the partition 2 and the tank cover 12, allowing the partition 2 to move together when the tank cover 12 is opened. This facilitates operations inside the storage tank, such as inserting or removing cell storage tubes. A limiting ring 13 is fixed to the inner wall of the tank body 11. The partition 2 is located on the side of the limiting ring 13 closest to the tank cover 12, and a sealing ring 22 is sandwiched between the partition 2 and the limiting ring 13. The limiting ring 13 on the inner wall of the tank body 11 limits the partition 2, ensuring that the partition 2 is in the appropriate position. At the same time, the sealing ring 22 sandwiched between the partition 2 and the limiting ring 13 further enhances the sealing of the storage tank, reduces the impact of external factors on the stored stem cells, better ensures the stability of the stem cell storage environment, helps to extend the storage time of stem cells, and improves the activity retention rate of stem cells during transportation.

[0036] Reference Figure 1 and Figure 2The storage tank body 1 is encased in a composite shell 6. A pressure relief chamber 5 is located between the storage tank body 1 and the composite shell 6. An exhaust pipe 53 passes through the composite shell 6 and connects to an exhaust valve 54. The composite shell 6 includes, from the outside to the inside, an impact-resistant layer, a buffer layer, and a heat-reflective layer. The impact-resistant layer can withstand external impacts and protect the storage tank body 1 from damage. The impact-resistant layer is a carbon fiber reinforced layer. Carbon fiber has the characteristics of high strength and light weight, which can effectively resist external impacts and protect the storage tank body 1. In addition to carbon fiber, materials such as aramid fiber can also be used as substitutes. The buffer layer can absorb vibration energy and play a good buffering role. The buffer layer is an aerogel layer. Aerogel can absorb vibration energy and reduce the impact of vibration on the inside of the storage tank during transportation. The heat-reflective layer is an aluminum foil heat-reflective film, which can block radiative heat transfer and further reduce heat transfer. The composite shell 6 is integrally formed using a vacuum brazing process. The three components work together to achieve both shock absorption and heat insulation, thus better maintaining the activity of stem cells during transportation, adapting to a wider range of external environmental temperature changes, and withstanding drop impacts from a certain height. It also contributes to the lightweight design of the storage tank, facilitating carrying and transportation, and ensuring that the storage tank can meet the requirements for long-term unattended transport while still meeting all performance requirements. The outer walls and bottom of the tank body 11 are covered by the composite shell 6, as are the top and outer walls of the lid 12. The timer 123 and handle are all located on the composite shell 6 on the top of the lid 12.

[0037] Reference Figure 2 A porous ceramic carrier 41 and a baffle 21 are fixedly mounted at the end of the partition 2 away from the liquid phase cooling zone 3, with the porous ceramic carrier 41 located inside the baffle 21. The porous ceramic carrier 41 has numerous tiny pores that can adsorb liquid nitrogen, providing a continuous low-temperature environment for the gas phase cooling zone 4. The porous ceramic carrier 41 can be made of materials such as alumina ceramic, which has good chemical stability and a uniform pore structure. The baffle 21 prevents the porous ceramic carrier 41 from shifting and liquid nitrogen from splashing out, ensuring the stable operation of the gas phase cooling zone 4. The baffle 21 can be made of materials such as plastic or metal. A support frame 31 for supporting the stem cell storage tube is fixedly mounted at the bottom of the liquid phase cooling zone 3. The support frame 31 can be made of plastic or metal, such as polypropylene plastic or stainless steel. Its shape can be designed as a grid or a support frame to ensure that the stem cell storage tube can be stably placed in the liquid phase cooling zone 3, avoiding shaking or tipping during transportation. The porous ceramic carrier 41 can also be replaced with a sponge to reduce costs, and provides shock absorption when the stem cell storage tube is inserted into the sponge.

[0038] Reference Figure 2Specifically, the detection component 7 includes a temperature sensor 71 and a pressure sensor 72, used to detect the temperature and pressure inside the liquid-phase cooling zone 3 and the gas-phase cooling zone 4. The temperature sensor 71 and pressure sensor 72 for detecting the liquid-phase cooling zone 3 are installed at the end of the partition 2 near the liquid-phase cooling zone 3, and the temperature sensor 71 and pressure sensor 72 for detecting the gas-phase cooling zone 4 are installed at the end of the tank cover 12 near the gas-phase cooling zone 4. The temperature sensor 71 can monitor temperature changes in real time, while the pressure sensor 72 can monitor gas pressure changes. This allows operators to understand the temperature and pressure status of the two zones in real time, and thus adjust the corresponding parameters in a timely manner based on the detection data. This ensures that stem cells are stored in a suitable temperature and pressure environment, helps maintain stem cell activity, further improves the activity retention rate of stem cells during transportation, better adapts to temperature changes in the external environment, and meets the needs of long-term unattended transportation.

[0039] The implementation principle of a portable stem cell transport storage container according to this application embodiment is as follows: This embodiment uses a compartmentalized design to divide the interior of the storage container into a liquid-phase cooling zone 3 and a gas-phase cooling zone 4, achieving dual-mode storage in both liquid and gas phases, avoiding cross-contamination of stem cells and the problem of high gas-phase storage temperature. The design of the titanium alloy honeycomb sandwich structure and composite shell 6 ensures the impact resistance of the storage container while reducing the overall weight and improving portability. The pressure relief device prevents the storage container from bursting due to excessive gas pressure. The various components cooperate and work together to achieve a high activity retention rate of stem cells during transportation, adapt to a wide range of external environmental changes, withstand certain drop impacts, and meet the needs of long-term unattended transport, representing a significant improvement and enhancement compared to existing technologies.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable stem cell transport storage tank characterized by: The application relates to a cell storage tank, which comprises a storage tank body (1), a baffle (2) arranged in the storage tank body (1), a liquid-phase cooling area (3) and a gas-phase cooling area (4) formed by the baffle (2) in the storage tank body (1), the liquid-phase cooling area (3) being arranged below the gas-phase cooling area (4), the storage tank body (1) adopting a titanium alloy honeycomb sandwich structure, the titanium alloy honeycomb sandwich structure comprising an outer titanium alloy shell, a middle aerogel heat insulation layer and an inner medical-grade stainless steel cavity, and the titanium alloy honeycomb sandwich structure being integrally formed through a vacuum brazing process.

2. A portable stem cell transport storage tank according to claim 1, wherein: One end of the baffle (2) away from the liquid-phase cooling area (3) is fixedly provided with a porous ceramic carrier (41) and a blocking cylinder (21), the porous ceramic carrier (41) is arranged in the blocking cylinder (21), and the bottom of the liquid-phase cooling area (3) is fixedly provided with a supporting frame (31) for supporting cell storage tubes.

3. The portable stem cell transport storage tank of claim 1, wherein: The outer side of the storage tank body (1) is sleeved with a pressure relief cavity (5), the liquid-phase cooling area (3) and the gas-phase cooling area (4) are respectively provided with independent pressure relief valves (51), the pressure relief valves (51) are connected with pressure relief pipes (52), the pressure relief valves (51) are arranged in the pressure relief cavity (5), the pressure relief valves are controlled to open and close through elastic sealing diaphragms, the pressure relief cavity (5) is communicated with an exhaust pipe (53), and the exhaust pipe (53) is connected with an exhaust valve (54).

4. A portable stem cell transport storage tank according to claim 3, wherein: The storage tank body (1) is sleeved with a composite shell (6), the pressure relief cavity (5) is arranged between the storage tank body (1) and the composite shell (6), the exhaust pipe (53) penetrates through the composite shell (6) and is connected with the exhaust valve (54), and the composite shell (6) comprises, from outside to inside, an anti-impact layer, a buffer layer and a heat reflection layer.

5. A portable stem cell transport storage tank according to claim 4, wherein: The anti-impact layer is a carbon fiber reinforced layer, the buffer layer is an aerogel layer, the heat reflection layer is an aluminum foil heat reflection film, and the composite shell (6) is integrally formed through a vacuum brazing process.

6. The portable stem cell transport storage tank of claim 1, wherein: Further comprising a detection assembly (7), the detection assembly (7) comprising a temperature sensor (71) and a pressure sensor (72) for detecting the temperature and pressure in the liquid-phase cooling area (3) and the gas-phase cooling area (4).

7. The portable stem cell transport storage tank of claim 1, wherein: The storage tank body (1) comprises a tank body (11) and a tank cover (12), the tank cover (12) is fixedly provided with a medical-grade silica gel sealing ring (121) at one end close to the tank body (11), the medical-grade silica gel sealing ring (121) is attached to the inner wall of the gas-phase cooling area (4), a plurality of screw rods (111) are fixedly arranged at the upper end of the tank body (11), the screw rods (111) penetrate through the tank cover (12) and are threadedly connected with nuts (112), and a handle (122) is rotationally connected to one end of the tank cover (12) away from the baffle (2).

8. A portable stem cell transport storage tank according to claim 7, wherein: The baffle (2) is slidably connected with the tank body (11) along the axial direction of the tank body (11), a plurality of connecting rods are fixedly arranged between the baffle (2) and the tank cover (12), a limiting ring (13) is fixedly arranged on the inner wall of the tank body (11), the baffle (2) is arranged on one side of the limiting ring (13) close to the tank cover (12), and a sealing ring (22) is clamped between the baffle (2) and the limiting ring (13).

9. The portable stem cell transport storage tank of claim 7, wherein: The tank cover (12) is provided with a timer (123) at one end away from the tank body (11).

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