Ultralow-temperature storage equipment for in-vitro diagnostic reagent

Abstract

The invention belongs to the technical field of storage equipment, and particularly relates to ultralow-temperature storage equipment for in-vitro diagnostic reagents, which comprises a storage box, a sealing cover is connected to the storage box through a hinge, a supporting plate is fixedly mounted in the storage box, a negative pressure assembly is arranged in a storage cylinder, a driving assembly is arranged in the storage box, and a driving motor is arranged in the driving assembly. A frame is fixedly installed in the storage box, box bodies are installed in the frame in an array mode, and air conveying assemblies are arranged in the box bodies. According to the ultralow-temperature storage equipment for the in-vitro diagnostic reagent, by arranging the annular air bag and the annular piston, reagent tubes of different sizes can be conveniently and rapidly fixed, the reagent tubes to be stored are placed in the storage barrel, the size of the annular air bag is expanded, and then the positions of the reagent tubes are limited; an annular piston can be driven to move through a pull rod, suction force is generated on the reagent tubes, the reagent tubes are stably placed in the storage barrel, and the reagent tubes of different sizes can be conveniently and rapidly limited.

Description

Technical Field

[0001] The present invention belongs to the technical field of storage devices, and specifically relates to an ultra-low temperature storage device for in vitro diagnostic reagents. Background Art

[0002] Ultra-low temperature storage devices for in vitro diagnostic reagents are mainly used to store in vitro diagnostic reagents, especially temperature-sensitive biological products such as enzymes, antigens, antibodies, nucleic acids, etc. These devices can create an extremely low temperature environment to maintain the stability and effectiveness of the reagents, keep them active for a long time, avoid degradation caused by temperature rise, thereby extending the shelf life of the reagents, effectively inhibiting the growth of microorganisms such as bacteria and viruses, preventing reagent contamination, ensuring the accuracy of test results, helping to maintain the quality of the reagents, enabling the reagents to be transported over long distances under refrigerated or frozen conditions, and ensuring that the reagents remain in the best state when they reach the destination.

[0003] A Chinese patent with the publication number CN217533692U discloses an ultra-low temperature storage device for in vitro diagnostic reagents, including a storage device, a pallet, and an electric telescopic rod. The storage device is slidably connected to the pallet. At both left and right ends of the rear end of the pallet, limit blocks are fixedly connected. When in use, by setting the limit blocks, limit plates, guide rods, fixing plates, and limit rods, rotate the threaded rod on the pallet to make the threaded rod drive the clamping block to disengage from the baffle, and then push the baffle through the first spring in the pallet to make the baffle slide in the pallet. Then rotate the threaded rod in the reverse direction to make the threaded rod support at the bottom of the baffle to protect the in vitro diagnostic reagents on the pallet, prevent the in vitro diagnostic reagents from falling, make the guide rods on the limit blocks slide in the limit plates, and compress the second spring. The pallet can automatically slide back and forth in the storage device, facilitating the placement and retrieval of in vitro diagnostic reagents, preventing staff from being frostbitten, and improving safety.

[0004] Existing ultra-low temperature storage devices for in vitro diagnostic reagents have certain inconveniences during the process of storing reagents. It is not convenient to quickly limit and store reagent tubes of different sizes, resulting in low work efficiency. Moreover, when the reagent tubes are not stably stored, they are prone to falling during shaking, causing waste of reagents.

[0005] Therefore, the present invention provides an ultra-low temperature storage device for in vitro diagnostic reagents. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the problem of inconvenient rapid limit storage of reagent tubes of different sizes, the present invention proposes an ultra-low temperature storage device for in vitro diagnostic reagents.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: An ultra-low temperature storage device for in vitro diagnostic reagents of the present invention includes a storage box, on which a sealing cover is connected by a hinge, a lock is arranged on the storage box, a support plate is fixedly installed inside the storage box, a plurality of storage cylinders are arranged in an array on the support plate, a limiting block is fixedly installed inside the storage cylinder, and the limiting block is arranged in a triangular and inclined shape. An annular airbag is fixedly installed inside the storage cylinder, and the annular airbag is located above the limiting block. A connecting head is fixedly installed on the annular airbag. A negative pressure component is arranged inside the storage cylinder, a driving component is arranged inside the storage box, and the driving component is located below the storage cylinder. A frame is fixedly installed inside the storage box, a plurality of boxes are arranged in an array inside the frame, an air delivery component is arranged inside the box, a connecting component is arranged on the frame, and the connecting component is communicated with the connecting head. A refrigeration component is fixedly installed inside the storage box, and the refrigeration component is located below the frame. A battery component is fixedly installed inside the storage box, and the battery component is electrically connected to the refrigeration component.

[0008] By adopting the above technical solution, through the arranged driving component and negative pressure component, when the driving component moves, the negative pressure component will work, making the inside of the storage cylinder in a negative pressure state, generating suction force on the reagent, causing the reagent tube to move downward. At the same time, the limiting block will support and limit the reagent tube, so that the reagent tube is limited inside the storage cylinder, achieving the purpose of stably storing the reagent. When transferring the ultra-low temperature storage device for in vitro diagnostic reagents, it effectively avoids the separation of the reagent tube from the fixed place, resulting in the damage and waste of the reagent, and is convenient for quickly storing reagents of different sizes.

[0009] Preferably, a handle is fixedly installed on the top of the sealing cover, a control panel is inlaid on the storage box, and the control panel is electrically connected to the battery component and the refrigeration component respectively. A temperature sensor is arranged inside the storage box, and the temperature sensor is electrically connected to the control panel. Support blocks are fixedly installed at the bottom of the storage box.

[0010] By adopting the above technical solution, through the arranged handle, it is convenient for manual handling and moving of the storage box 1, and through the refrigeration component, it is convenient to adjust the temperature inside the storage box.

[0011] Preferably, rubber blocks corresponding to the storage cylinders are arranged in an array on the sealing cover, a driving block is fixedly installed on the sealing cover, and the driving block is located on one side of the rubber block. A sealing ring is arranged on the sealing cover.

[0012] By adopting the above technical solution, through the arranged rubber blocks, when the sealing cover is closed and seals the top of the storage box, the rubber blocks will contact the top end of the reagent tube, thereby limiting the position of the reagent tube and making the reagent tube stably placed inside the storage cylinder.

[0013] Preferably, the negative pressure assembly comprises an annular piston and a pull rod, the annular piston is arranged inside the storage cylinder, one end of the pull rod is fixedly connected to the center position of the annular piston, and the diameter of the annular piston is equal to the inner diameter of the storage cylinder.

[0014] By adopting the above technical solution, the annular piston is provided and the pull rod drives the annular piston to move. When the annular piston moves, it fits with the inner wall of the storage tube and extracts the air inside the storage tube.

[0015] Preferably, the driving assembly includes a square plate and a strip plate, the square plate is arranged inside the storage box, and the square plate is located below the storage tube, one end of the pull rod is fixedly connected to the square plate, the strip plate is fixedly mounted on the square plate, and the strip plate passes through the support plate, and a guide assembly is arranged inside the storage box.

[0016] By adopting the above technical solution, the strip plate is set, and when the square plate moves, it will drive the pull rod to move, and the pull rod will drive the annular piston to move. When the annular piston moves, it will fit with the inner wall of the storage tube, and the air inside the storage tube will be extracted. After the reagent tube is placed inside the storage tube, it cooperates with the annular airbag to form a closed space inside the storage tube, thereby generating suction on the reagent tube, so that the reagent tube can be stably placed inside the storage tube.

[0017] Preferably, the guide assembly includes a guide block and a guide groove, the guide groove is symmetrically arranged inside the storage box, the guide block is arranged inside the guide groove, and one end of the guide block is fixedly connected to the square plate.

[0018] By adopting the above technical solution, through the provided guide block and guide groove, when the square plate moves, the guide groove cooperates with the guide block to guide the square plate, so that the square plate moves smoothly.

[0019] Preferably, the gas delivery assembly includes a drive rod and a square piston, the square piston is arranged inside the box, the drive rod is fixedly installed at the center position of the square piston, a guide cylinder is fixedly installed on the top of the box, and the drive rod passes through the guide cylinder, the top of the drive rod is fixedly connected to the bottom of the square plate, and a return spring is fixedly installed inside the box, and the top of the return spring is fixedly connected to the square piston.

[0020] By adopting the above technical solution, a square piston is set up, which will compress the air inside the box when it moves. The compressed air flows through the connecting component to make the air flow into the annular airbag, so that the volume of the annular airbag expands.

[0021] Preferably, the connecting component includes a ventilation groove and a conveying hose, the ventilation groove is fixedly mounted on the frame, and the ventilation groove is connected to the interior of the box through a pipe, one end of the conveying hose is connected to one end of the ventilation groove, and the other end of the conveying hose is connected to the connector.

[0022] By adopting the above technical solution, the air inside the box compressed by the square piston will flow into the ventilation groove through the provided conveying hose, and the compressed air will flow into the annular airbag through the conveying hose and the connector.

[0023] Preferably, a strip groove is fixedly installed inside the storage box, a communicating pipe is fixedly installed on the strip groove, and the communicating pipe is communicated with the adjacent storage cylinder. One end of the communicating pipe is fixedly connected with an air extraction pipe.

[0024] By adopting the above technical solution, through the provided strip groove, the storage cylinder can extract the air inside the strip groove through the communicating pipe, and then the outside air can be extracted through the air extraction pipe.

[0025] Preferably, a positioning suction cup is inlaid inside the support block, a square pipe is inlaid inside the storage box, a circular pipe corresponding to the positioning suction cup is fixedly installed at the bottom of the square pipe, and one end of the circular pipe is communicated with the center position of the positioning suction cup. An adjusting pipe is fixedly installed on the square pipe, a connecting pipe is fixedly installed on the adjusting pipe, and one end of the connecting pipe is communicated with the air extraction pipe. A spherical valve is arranged inside the adjusting pipe, and the spherical valve is used for sealing the inside of the adjusting pipe. A knob corresponding to the adjusting pipe is arranged on the outer wall of the storage box, and the knob is fixedly connected with the spherical valve through a shaft.

[0026] By adopting the above technical solution, through the provided positioning suction cup, when the positioning suction cup is attached to the support plane and a negative pressure is formed inside the square pipe, the air inside the positioning suction cup is extracted through the circular pipe. When a negative pressure is formed inside the positioning suction cup, the positioning suction cup can be adsorbed on the support plane, thereby improving the stability of the position of the ultra-low temperature storage device for in vitro diagnostic reagents.

[0027] The beneficial effects of the present invention are as follows: 1. For the ultra-low temperature storage device for in vitro diagnostic reagents of the present invention, through the provided annular airbag, it is convenient to quickly fix reagent tubes of different sizes. Place the reagent tube to be stored inside the storage cylinder, the limiting block limits the reagent tube, close the sealing cover, the strip plate will move through the driving block, so as to push the square piston to move. The square piston moves to compress the air inside the box, and the compressed air will flow into the ventilation groove. The compressed air will flow into the annular airbag through the conveying hose and the connector, thereby causing the volume of the annular airbag to expand. When the volume of the annular airbag expands, it contacts and fits with the surface of the reagent tube, thereby limiting the position of the reagent tube, facilitating the quick limitation of reagent tubes of different sizes, effectively avoiding the separation of the reagent tube from the fixing place, resulting in the damage and waste of the reagent, and improving the protection performance of the ultra-low temperature storage device for in vitro diagnostic reagents.

[0028] 2. The cryogenic storage device for in vitro diagnostic reagents according to the present invention, through the arranged annular airbag, when storing the reagent tube, the volume of the annular airbag expands. After one side of the annular airbag fits with the outer wall of the reagent tube, the annular airbag and the reagent tube cooperate to form a closed space inside the storage cylinder. Then, when the square plate moves, it will drive the pull rod to move, and through the pull rod, the annular piston will be driven to move. When the annular piston moves and fits with the inner wall of the storage cylinder, the air inside the storage cylinder will be extracted. After the reagent tube is placed inside the storage cylinder and cooperates with the annular airbag, a sealed space will be formed inside the storage cylinder, thereby generating a suction force on the reagent tube to stably place the reagent tube inside the storage cylinder.

[0029] 3. The cryogenic storage device for in vitro diagnostic reagents according to the present invention, through the arranged positioning suction cup, facilitates the stability of the cryogenic storage device for in vitro diagnostic reagents. The positioning suction cup is attached to the plane. By rotating the spherical valve through the knob, the spherical valve no longer seals the regulating tube. When the negative pressure component moves to extract the air inside the storage cylinder, through the cooperation of the communicating tube, the strip-shaped groove, the suction tube, the connecting tube, and the regulating tube, the air inside the square tube can be extracted. Since the positioning suction cup is attached to the supporting plane, when negative pressure is formed inside the square tube, the air inside the positioning suction cup is extracted through the round tube. When negative pressure is formed inside the positioning suction cup, the positioning suction cup can be adsorbed on the supporting plane, thereby improving the stability of the position of the cryogenic storage device for in vitro diagnostic reagents, avoiding accidental sliding and dropping of the storage box, damaging the reagents stored inside, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 is a perspective view of the cryogenic storage device for in vitro diagnostic reagents of the present invention; Figure 2 is a schematic structural diagram of the storage box in the present invention; Figure 3 is a schematic structural diagram of the storage cylinder in the present invention; Figure 4 is a schematic structural diagram of the square plate in the present invention; Figure 5 is a schematic structural diagram of the frame in the present invention; Figure 6 is a schematic structural diagram of the box body in the present invention; Figure 7 is a schematic structural diagram of the positioning suction cup in the present invention; Figure 8 is a schematic structural diagram of the strip-shaped groove in the present invention; Figure 9 is a schematic structural diagram of the square tube in the present invention.

[0032] In the figure: 1, storage box; 2, sealing cover; 3, handle; 4, lock catch; 5, refrigeration component; 6, battery component; 7, control panel; 8, temperature sensor; 9, support block; 10, rubber block; 11, drive block; 12, support plate; 13, storage cylinder; 14, limit block; 15, annular airbag; 16, connector; 17, annular piston; 18, pull rod; 19, square plate; 20, strip plate; 21, frame; 22, box body; 23, guide cylinder; 24, drive rod; 25, square piston; 26, ventilation slot; 27, delivery hose; 28, strip slot; 29, air extraction pipe; 30, positioning suction cup; 31, square pipe; 32, adjusting pipe; 33, spherical valve; 34, knob; 35, connecting pipe; 36, round pipe; 37, communicating pipe; 38, return spring; 39, sealing ring; 40, guide slot; 41, guide block. Specific embodiments

[0033] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0034] As Figures 1 to 6As shown in the figure, a cryogenic storage device for in vitro diagnostic reagents according to an embodiment of the present invention includes a storage box 1, a sealing cover 2 is hinged to the storage box 1, a lock catch 4 is arranged on the storage box 1, a support plate 12 is fixedly installed inside the storage box 1, a plurality of storage cylinders 13 are arranged in an array on the support plate 12, a limiting block 14 is fixedly installed inside the storage cylinder 13, and the limiting block 14 is arranged in a triangular and inclined shape. The limiting block 14 is made of rubber material. An annular airbag 15 is fixedly installed inside the storage cylinder 13, and the annular airbag 15 is located above the limiting block 14. A connection head 16 is fixedly installed on the annular airbag 15. A negative pressure component is arranged inside the storage cylinder 13, and a driving component is arranged inside the storage box 1, and the driving component is located below the storage cylinder 13. A frame 21 is fixedly installed inside the storage box 1, a plurality of boxes 22 are arranged in an array inside the frame 21, an air delivery component is arranged inside the box 22, a communication component is arranged on the frame 21, and the communication component is communicated with the connection head 16. A refrigeration component 5 is fixedly installed inside the storage box 1, and the refrigeration component 5 is located below the frame 21. A battery component 6 is fixedly installed inside the storage box 1, and the battery component 6 is electrically connected to the refrigeration component 5. When using the cryogenic storage device for in vitro diagnostic reagents to store reagents, after placing the storage box 1 on a support plane, the reagents are stored through reagent tubes. The reagent tubes to be stored are placed inside the storage cylinders 13. The lower limiting block 14 is made of rubber material. After the limiting block 14 contacts the reagent tube, it will limit the reagent tube, and then the reagent is placed inside the storage cylinder 13 for support and storage. After placing the reagent tube inside the storage box 1, close the sealing cover 2. The driving component will move through the driving block 11. The movement of the driving component will cause the negative pressure component to work, making the inside of the storage cylinder 13 in a negative pressure state. At the same time, the air delivery component will move to compress air, and the air will flow into the annular airbag 15 through the communication component. The volume of the annular airbag 15 expands and contacts and fits with the surface of the reagent tube, thereby limiting the position of the reagent tube. The cooperation between the annular airbag 15 and the reagent tube will form a closed space inside the storage cylinder 13. Then, when the negative pressure component moves, the air inside the storage cylinder 13 is extracted, generating a suction force on the reagent, causing the reagent tube to move downward. At the same time, the limiting block 14 will support and limit the reagent tube, thereby limiting the reagent tube inside the storage cylinder 13, achieving the purpose of stably storing the reagent. When transferring the cryogenic storage device for in vitro diagnostic reagents, it effectively avoids the separation of the reagent tube from the fixed place, resulting in damage and waste of the reagent, and improves the protection performance of the cryogenic storage device for in vitro diagnostic reagents. After the sealing cover 2 is closed above the storage box 1, the sealing cover 2 and the storage box 1 are tightly closed through the lock catch 4.

[0035] As Figure 1 and Figure 2As shown in the figure, a handle 3 is fixedly installed on the top of the sealing cover 2. A control panel 7 is inlaid on the storage box 1, and the control panel 7 is electrically connected to the battery assembly 6 and the refrigeration assembly 5 respectively. A temperature sensor 8 is arranged inside the storage box 1, and the temperature sensor 8 is electrically connected to the control panel 7. A support block 9 is fixedly installed at the bottom of the storage box 1. The handle 3 facilitates the movement of the ultra-low temperature storage device for in vitro diagnostic reagents. The refrigeration assembly 5 includes a compressor, a condenser, a capillary tube, an evaporator, an expansion valve, a drying filter, and a refrigerant. These components together constitute the refrigeration system of the ultra-low temperature storage device for in vitro diagnostic reagents. Through the circulating flow of the refrigerant, the cooling effect is achieved. The refrigeration assembly 5 works to cool the inside of the storage box 1, thereby facilitating the ultra-low temperature storage of the reagents. The temperature inside the storage box 1 can be monitored through the temperature sensor 8, and through module conversion, the parameters are displayed on the display screen of the control panel 7. The operation of the refrigeration assembly 5 can be controlled through the control panel 7.

[0036] As Figure 2 shown, rubber blocks 10 corresponding to the storage cylinders 13 are arranged in an array on the sealing cover 2. A driving block 11 is fixedly installed on the sealing cover 2, and the driving block 11 is located on one side of the rubber blocks 10. A sealing ring 39 is arranged on the sealing cover 2. When the sealing cover 2 is closed to seal the top of the storage box 1, the rubber blocks 10 will contact the top of the reagent tube, thereby limiting the position of the reagent tube and enabling the reagent tube to be stably placed inside the storage cylinder 13. After the sealing cover 2 is completely closed, the driving block 11 can push the strip plate 20 to move.

[0037] As Figure 3 and Figure 4 shown, the negative pressure assembly includes an annular piston 17 and a pull rod 18. The annular piston 17 is arranged inside the storage cylinder 13. One end of the pull rod 18 is fixedly connected to the central position of the annular piston 17. The diameter of the annular piston 17 is equal to the inner diameter of the storage cylinder 13. The driving assembly includes a square plate 19 and a strip plate 20. The square plate 19 is arranged inside the storage box 1 and is located below the storage cylinder 13. One end of the pull rod 18 is fixedly connected to the square plate 19. The strip plate 20 is fixedly installed on the square plate 19 and penetrates through the support plate 12. A guiding assembly is arranged inside the storage box 1. The strip plate 20 can be used to push the square plate 19 to move. When the square plate 19 moves, it will drive the pull rod 18 to move. The annular piston 17 will be driven to move through the pull rod 18. When the annular piston 17 moves and fits with the inner wall of the storage cylinder 13, the air inside the storage cylinder 13 will be extracted. After the reagent tube is placed inside the storage cylinder 13 and cooperates with the annular airbag 15, a closed space will be formed inside the storage cylinder 13, thereby generating a suction force on the reagent tube and enabling the reagent tube to be stably placed inside the storage cylinder 13.

[0038] As Figure 2 and Figure 4As shown, the guiding assembly includes a guiding block 41 and a guiding groove 40. The guiding grooves 40 are symmetrically arranged inside the storage box 1. The guiding block 41 is arranged inside the guiding groove 40, and one end of the guiding block 41 is fixedly connected to the square plate 19. When the square plate 19 moves, it will drive the guiding block 41 to slide inside the guiding groove 40. The cooperation between the guiding groove 40 and the guiding block 41 will guide the square plate 19 to move smoothly.

[0039] As Figure 2 and Figure 6 shown, the air delivery assembly includes a driving rod 24 and a square piston 25. The square piston 25 is arranged inside the box body 22. The driving rod 24 is fixedly installed at the central position of the square piston 25. A guiding cylinder 23 is fixedly installed at the top of the box body 22, and the driving rod 24 passes through the guiding cylinder 23. The top end of the driving rod 24 is fixedly connected to the bottom of the square plate 19. A return spring 38 is fixedly installed inside the box body 22, and the top end of the return spring 38 is fixedly connected to the square piston 25. When the square plate 19 moves, it will cause the driving rod 24 to move. When the driving rod 24 moves, it will push the square piston 25 to move. When the square piston 25 moves, it will compress the air inside the box body 22. The compressed air will flow through the connecting assembly and enter the annular airbag 15, causing the volume of the annular airbag 15 to expand. When the strip plate 20 is no longer under external pressure, the return spring 38 will reset and push the square piston 25 to reset. The reset of the square piston 25 will drive the driving rod 24, the square plate 19 and the strip plate 20 to reset.

[0040] As Figure 3 and Figure 5 shown, the connecting assembly includes a ventilation groove 26 and a delivery hose 27. The ventilation groove 26 is fixedly installed on the frame 21, and the ventilation groove 26 is connected to the inside of the box body 22 through a pipeline. One end of the delivery hose 27 is connected to one end of the ventilation groove 26, and the other end of the delivery hose 27 is connected to the connector 16. The air inside the box body 22 compressed by the square piston 25 will flow into the ventilation groove 26, and through the delivery hose 27 and the connector 16, the compressed air will flow into the annular airbag 15, thereby causing the volume of the annular airbag 15 to expand.

[0041] As Figure 2 and Figure 8 shown, a strip groove 28 is fixedly installed inside the storage box 1. A communicating pipe 37 is fixedly installed on the strip groove 28, and the communicating pipe 37 is connected to the adjacent storage cylinder 13. One end of the communicating pipe 37 is fixedly connected to an air extraction pipe 29. The storage cylinder 13 can extract the air inside the strip groove 28 through the communicating pipe 37, and then extract the external air through the air extraction pipe 29.

[0042] As Figure 1 , Figure 7 and Figure 9As shown, a positioning suction cup 30 is embedded inside the support block 9, and a square tube 31 is embedded inside the storage box 1. A circular tube 36 corresponding to the positioning suction cup 30 is fixedly installed at the bottom of the square tube 31, and one end of the circular tube 36 is communicated with the central position of the positioning suction cup 30. An adjusting tube 32 is fixedly installed on the square tube 31, and a connecting tube 35 is fixedly installed on the adjusting tube 32. One end of the connecting tube 35 is communicated with the air extraction tube 29. A spherical valve 33 is arranged inside the adjusting tube 32. The spherical valve 33 is used to seal the inside of the adjusting tube 32. A knob 34 corresponding to the adjusting tube 32 is arranged on the outer wall of the storage box 1, and the knob 34 is fixedly connected to the spherical valve 33 through a shaft. Before storing the reagent in the ultra-low temperature storage device for in vitro diagnostic reagents, the storage box 1 can be placed on a plane first, so that the positioning suction cup 30 fits the plane. By rotating the knob 34 to rotate the spherical valve 33, the spherical valve 33 no longer seals the adjusting tube 32. When the negative pressure component moves to extract the air inside the storage cylinder 13, through the cooperation of the communicating tube 37, the strip-shaped groove 28, the air extraction tube 29, the connecting tube 35 and the adjusting tube 32, the air inside the square tube 31 can be extracted. Since the positioning suction cup 30 fits the support plane, when negative pressure is formed inside the square tube 31, the air inside the positioning suction cup 30 is extracted through the circular tube 36. When negative pressure is formed inside the positioning suction cup 30, the positioning suction cup 30 can be adsorbed on the support plane, thereby improving the stability of the position of the ultra-low temperature storage device for in vitro diagnostic reagents, avoiding accidental sliding and falling of the storage box 1, damaging the stored reagents inside, and improving the safety performance.

[0043] Working principle: First, when using the ultra-low temperature storage device for in vitro diagnostic reagents to store the reagents, after placing the storage box 1 on the support plane, the reagents are stored through the reagent tubes. The reagent tubes to be stored are placed inside the storage cylinder 13. The lower limit block 14 is made of rubber material. After the limit block 14 contacts the reagent tube, it will limit the reagent tube, and then place the reagent inside the storage cylinder 13 for support and storage. After placing the reagent tube inside the storage box 1, close the sealing cover 2. The driving block 11 will cause the strip plate 20 to move. When the strip plate 20 moves, it will push the square plate 19 to move. When the square plate 19 moves, the square piston 25 will be pushed to move through the driving rod 24. The square piston 25 moves to compress the air inside the box body 22. The compressed air will flow into the ventilation groove 26. Through the delivery hose 27 and the connector 16, the compressed air will flow into the annular airbag 15, and then the volume of the annular airbag 15 will expand. The volume of the annular airbag 15 expands and contacts and fits with the surface of the reagent tube, and then limits the position of the reagent tube. The annular airbag 15 and the reagent tube cooperate to form a closed space inside the storage cylinder 13. When the strip plate 20 moves, it can push the square plate 19 to move. When the square plate 19 moves, it will drive the pull rod 18 to move. Through the pull rod 18, the annular piston 17 will be driven to move. When the annular piston 17 moves and fits with the inner wall of the storage cylinder 13, the air inside the storage cylinder 13 will be extracted. After the reagent tube is placed inside the storage cylinder 13 and cooperates with the annular airbag 15, a closed space will be formed inside the storage cylinder 13, and then a suction force will be generated on the reagent tube, so that the reagent tube is stably placed inside the storage cylinder 13, effectively avoiding the separation of the reagent tube from the fixed place, resulting in the damage and waste of the reagent, improving the protection performance of the ultra-low temperature storage device for in vitro diagnostic reagents. After the sealing cover 2 is closed above the storage box 1, the sealing cover 2 and the storage box 1 are tightly closed through the lock 4. A rubber ring is arranged around the positioning suction cup 30, which can make the positioning suction cup 30 fit with the plane. The knob 34 is fixedly connected to one side of the spherical valve 33 through a shaft. By rotating the knob 34, the spherical valve 33 is rotated, and then the spherical valve 33 no longer seals the regulating tube 32. When the negative pressure component moves to extract the air inside the storage cylinder 13, through the cooperation of the communicating pipe 37, the strip groove 28, the air extraction pipe 29, the connecting pipe 35 and the regulating tube 32, the air inside the square tube 31 can be extracted. Since the positioning suction cup 30 fits with the support plane, when a negative pressure is formed inside the square tube 31, the air inside the positioning suction cup 30 is extracted through the round tube 36. When a negative pressure is formed inside the positioning suction cup 30, a suction force can be generated on the positioning suction cup 30, and then it can be adsorbed on the support plane, and then the stability of the position of the ultra-low temperature storage device for in vitro diagnostic reagents can be improved, avoiding accidental sliding and falling of the storage box 1 and causing damage to the reagents stored inside, and improving the safety.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An ultra-low temperature storage device for in vitro diagnostic reagents, characterized in that: The invention comprises a storage box (1), wherein a sealing cover (2) is connected to the storage box (1) via a hinge, a lock (4) is arranged on the storage box (1), a support plate (12) is fixedly installed inside the storage box (1), a storage tube (13) is arranged in an array on the support plate (12), a limit block (14) is fixedly installed inside the storage tube (13), and the limit block (14) is arranged in a triangular shape and inclined, an annular air bag (15) is fixedly installed inside the storage tube (13), and the annular air bag (15) is located above the limit block (14), a connector (16) is fixedly installed on the annular air bag (15), and a negative pressure is arranged inside the storage tube (13). A pressure assembly is provided inside the storage box (1), and the driving assembly is located below the storage cylinder (13); a frame (21) is fixedly installed inside the storage box (1); a box body (22) is installed in an array inside the frame (21); a gas transmission assembly is provided inside the box body (22); a connecting assembly is provided on the frame (21), and the connecting assembly is connected to the connector (16); a refrigeration assembly (5) is fixedly installed inside the storage box (1), and the refrigeration assembly (5) is located below the frame (21); a battery assembly (6) is fixedly installed inside the storage box (1), and the battery assembly (6) is electrically connected to the refrigeration assembly (5).

2. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 1, characterized in that: A handle (3) is fixedly mounted on the top of the sealing cover (2); a control panel (7) is embedded on the storage box (1), and the control panel (7) is electrically connected to the battery assembly (6) and the refrigeration assembly (5) respectively; a temperature sensor (8) is arranged inside the storage box (1), and the temperature sensor (8) is electrically connected to the control panel (7); and a support block (9) is fixedly mounted on the bottom of the storage box (1).

3. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 2, characterized in that: The sealing cover (2) is provided with rubber blocks (10) in an array corresponding to the storage cylinders (13); a driving block (11) is fixedly mounted on the sealing cover (2), and the driving block (11) is located on one side of the rubber block (10); and a sealing ring (39) is provided on the sealing cover (2).

4. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 3, characterized in that: The negative pressure assembly comprises an annular piston (17) and a pull rod (18); the annular piston (17) is arranged inside the storage cylinder (13); one end of the pull rod (18) is fixedly connected to the center position of the annular piston (17); and the diameter of the annular piston (17) is equal to the internal diameter of the storage cylinder (13).

5. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 4, characterized in that: The driving assembly comprises a square plate (19) and a strip plate (20); the square plate (19) is arranged inside the storage box (1), and the square plate (19) is located below the storage tube (13); one end of the pull rod (18) is fixedly connected to the square plate (19); the strip plate (20) is fixedly mounted on the square plate (19), and the strip plate (20) passes through the support plate (12); and a guide assembly is arranged inside the storage box (1).

6. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 5, characterized in that: The guide assembly comprises a guide block (41) and a guide groove (40), wherein the guide groove (40) is symmetrically arranged inside the storage box (1), the guide block (41) is arranged inside the guide groove (40), and one end of the guide block (41) is fixedly connected to the square plate (19).

7. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 1, characterized in that: The gas delivery assembly comprises a driving rod (24) and a square piston (25), wherein the square piston (25) is arranged inside the box body (22), the driving rod (24) is fixedly mounted at the center position of the square piston (25), a guide cylinder (23) is fixedly mounted on the top of the box body (22), and the driving rod (24) passes through the guide cylinder (23), the top end of the driving rod (24) is fixedly connected to the bottom of the square plate (19), and a return spring (38) is fixedly mounted inside the box body (22), and the top end of the return spring (38) is fixedly connected to the square piston (25).

8. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 1, characterized in that: The communication component comprises a ventilation slot (26) and a delivery hose (27); the ventilation slot (26) is fixedly mounted on the frame (21), and the ventilation slot (26) is connected to the interior of the box (22) via a pipeline; one end of the delivery hose (27) is connected to one end of the ventilation slot (26), and the other end of the delivery hose (27) is connected to the connector (16).

9. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 8, characterized in that: A strip groove (28) is fixedly installed inside the storage box (1), a connecting pipe (37) is fixedly installed on the strip groove (28), and the connecting pipe (37) is connected to an adjacent storage cylinder (13), and one end of the connecting pipe (37) is fixedly connected to an exhaust pipe (29).

10. The ultra-low temperature storage device for in vitro diagnostic reagents according to claim 2, characterized in that: A positioning suction cup (30) is embedded in the support block (9), a square tube (31) is embedded in the storage box (1), a round tube (36) corresponding to the positioning suction cup (30) is fixedly installed at the bottom of the square tube (31), and one end of the round tube (36) is connected to the center position of the positioning suction cup (30), an adjusting tube (32) is fixedly installed on the square tube (31), a connecting tube (35) is fixedly installed on the adjusting tube (32), and one end of the connecting tube (35) is connected to the exhaust pipe (29), a ball valve (33) is arranged inside the adjusting tube (32), and the ball valve (33) is used to seal the inside of the adjusting tube (32), and a knob (34) corresponding to the adjusting tube (32) is arranged on the outer wall of the storage box (1), and the knob (34) is fixedly connected to the ball valve (33) through a shaft.

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