Fishing device capable of being used in liquid nitrogen tank

Abstract

The utility model discloses a fishing device capable of being used in a liquid nitrogen tank. The operating rod is connected with the fishing device; the visual assembly is arranged on the outer side of the operating rod; the motor is arranged on the operating rod; the transmission part is connected with the motor; the flexible assembly is arranged in the operating rod, one end of the flexible assembly is connected with the transmission part, and the other end of the flexible assembly is connected with the fishing device; the heat insulation and protection coating is arranged on the periphery of the fishing device and the periphery of the handle. Through the application of the device, the cryopreservation tube in the liquid nitrogen tank can be caught more conveniently, quickly and accurately, the catching efficiency is improved, the personal safety of operators is guaranteed, the integrity and biological activity of samples in the cryopreservation tube are protected against damage, and the safety of the cryopreservation tube is improved. A more efficient, safer and more reliable solution is provided for management and fishing of samples in the liquid nitrogen tank.

Description

Technical Field

[0001] The utility model relates to the technical field of biological sample preservation, in particular to a fishing device that can be used in a liquid nitrogen tank. Background Technique

[0002] In the fields of biomedical research and clinical treatment, liquid nitrogen tanks, as key cryogenic storage devices, are crucial for ensuring the long-term stability and viability of biological samples. These samples, including but not limited to cell lines, genetic materials, tissue sections, germ cells, and precious biological preparations, need to be cryopreserved in liquid nitrogen tanks to maintain their biological characteristics. The design of liquid nitrogen tanks usually includes a multi-layer thermal insulation structure to maintain an extremely low temperature environment of about minus 196 degrees Celsius inside. Such low temperature conditions are an ideal choice for long-term preservation of the viability of most biological samples.

[0003] However, the use of liquid nitrogen tanks is also accompanied by some challenges and risks. A common problem is the accidental detachment of cryotubes. Due to the negligence of operators, vibrations inside the liquid nitrogen tank, or the instability of the storage rack structure, cryotubes may fall from the rack to the bottom of the tank. In addition, biological sample containers such as cryotubes may shift in position due to their physical properties and the density difference of liquid nitrogen. Some may sink to the bottom of the tank, while others may float on the surface of the liquid nitrogen. These non-uniform distributions pose additional challenges to sample management and fishing.

[0004] Traditional methods for fishing samples in liquid nitrogen tanks mainly rely on manual operations, usually using long-handled tweezers or special hooks to locate and capture samples. However, this method has significant limitations: First, in order to prevent the rapid evaporation of liquid nitrogen, the tank mouth of the liquid nitrogen tank is often designed to be relatively narrow, which further increases the difficulty of fishing. Second, the operator needs to have a clear understanding of the exact position of the sample, but the rapid evaporation of liquid nitrogen often forms a large amount of fog, seriously obstructing the operator's line of sight, so that the operator often has to carry out so-called "blind fishing" under the condition of blocked sight. In addition, when fishing samples in a liquid nitrogen tank, the efficiency of existing methods is usually not high. Especially when a large number of samples are stored in the tank, not only is the fishing process time-consuming and laborious, but also due to the complexity of the operation and the unpredictability of the tank environment, the samples may be damaged during the fishing process, increasing the risk of sample damage. Traditional operations require first removing the entire cryo-rack and then fishing one by one, which not only increases the complexity of the operation, but also prolongs the exposure time of the cryo-rack and samples in the normal temperature environment, which may have an adverse impact on the low-temperature stability and biological activity of the samples, increasing the risk of sample damage or functional decline. Moreover, the extremely low temperature of liquid nitrogen poses a threat to the health of operators. Prolonged exposure to the liquid nitrogen environment may cause frostbite or other occupational health problems. Therefore, existing fishing methods have deficiencies in terms of efficiency, safety, and sample protection.

[0005] In order to overcome the limitations of the existing technology, it is urgent to develop a new type of fishing tool, which must have high efficiency, high safety, and be easy to operate. It should also be compatible with liquid nitrogen tanks of various specifications and quickly recover the dropped cryotubes through a rapid liquid nitrogen filtration mechanism, while ensuring that the operators are not harmed by the low-temperature environment. For this purpose, a fishing device that can be used inside a liquid nitrogen tank needs to be proposed. Summary of the Utility Model

[0006] In view of this, to solve the above problems, the purpose of the present utility model is to provide a fishing device that can be used inside a liquid nitrogen tank, including:

[0007] A fishing implement, the fishing implement includes a steel ring and a fishing net, the steel ring has an opening, and the steel ring is fixedly connected to the fishing net;

[0008] An operating rod, the operating rod includes a handle and a sleeve rod, one end of the sleeve rod is in contact with the steel ring, and the other end of the sleeve rod is connected to the handle;

[0009] A visualization component, the visualization component includes an LED lamp, a camera, and a display screen, the LED lamp and the camera are both arranged at one end of the sleeve rod, and the display screen is arranged at the other end of the sleeve rod;

[0010] A motor, the motor is arranged at the other end of the sleeve rod;

[0011] A transmission component, the transmission component is fixedly connected to the motor;

[0012] A flexible component, the flexible component is arranged inside the operating rod, one end of the flexible component is connected to the transmission component, and the other end of the flexible component is connected to the steel ring;

[0013] An adiabatic and protective coating, the adiabatic and protective coating is arranged on the outer periphery of the fishing implement and the outer periphery of the handle.

[0014] In another preferred embodiment, the steel ring has an annular structure, and the upper end of the fishing net is fixedly connected to the steel ring.

[0015] In another preferred embodiment, the fishing net has a double-layer net structure, the double-layer net structure includes an outer net and an inner net, the inner net is arranged inside the outer net, the outer contours of the cross-sections of the outer net and the inner net along the radial direction are both circularly arranged, the upper end of the inner net is fixedly connected to the steel ring, the upper end of the outer net is fixedly connected to the steel ring, the diameter of the upper end of the inner net is equal to the diameter of the upper end of the outer net, and the outer contour of the cross-section of the inner net along the radial direction gradually decreases from top to bottom.

[0016] In another preferred embodiment, the cross-sections of the handle and the sleeve rod along the radial direction are both rectangular.

[0017] In another preferred embodiment, the sleeve rod is a telescopic structure, and the sleeve rod includes a telescopic part and a fixed part, and the telescopic part and the fixed part are slidably connected.

[0018] In another preferred embodiment, the flexible component includes a first soft wire and a second soft wire. One end of the first soft wire and one end of the second soft wire are both connected to the transmission component. The other end of the first soft wire is connected to one side of the opening, and the other end of the second soft wire is connected to the other side of the opening.

[0019] In another preferred embodiment, a connecting wire is arranged inside the sleeve rod, and both the LED lamp and the camera are connected to the display screen through the connecting wire.

[0020] In another preferred embodiment, the LED lamp is fixedly connected to the camera.

[0021] In another preferred embodiment, one end of the telescopic part is in contact with the steel ring, one end of the steel ring having the opening extends into the telescopic part, the other end of the telescopic part is connected to the fixed part, and both the LED lamp and the camera are arranged on the telescopic part.

[0022] In another preferred embodiment, one end of the fixed part is connected to the handle, the other end of the fixed part is connected to the telescopic part, and both the motor and the display screen are arranged on the fixed part.

[0023] Due to the adoption of the above technical solutions, the positive effects of the present utility model compared with the prior art are as follows:

[0024] By applying the present utility model, a fishing device that can be used inside a liquid nitrogen tank is provided, and the beneficial effects of this utility model are as follows:

[0025] (1) It can significantly improve the fishing efficiency: The present utility model can quickly adapt to liquid nitrogen tanks of different specifications, realize the rapid positioning and capture of frozen tubes, greatly reduce the fishing time, especially when dealing with a large number of samples, and thus improve the working efficiency of laboratories or medical institutions;

[0026] (2) It enhances the safety protection for operators: Through heat insulation and protective coatings, the present utility model can reduce the adverse effects of liquid nitrogen on operators, reduce the risk of frostbite and other occupational health problems, and provide a safer working environment for operators.

[0027] (3) Improve the accuracy and success rate of fishing: By optimizing the fishing mechanism and introducing a visualization component, the utility model enables the operator to observe the situation inside the liquid nitrogen tank in real time during the fishing process, thereby more accurately positioning and capturing the target sample, reducing the loss and damage of the sample, and improving the success rate of fishing;

[0028] (4) Reduce the exposure time of the sample: The efficient fishing performance combined with the rapid recovery mechanism indirectly shortens the exposure time of other preserved samples taken out of the liquid nitrogen tank in the normal temperature environment, maximally protecting the integrity and biological characteristics of the sample, and meeting the stringent requirements for sample preservation in biomedical research and clinical treatment. Description of the Drawings

[0029] Figure 1 is the overall schematic diagram of a fishing device that can be used for a liquid nitrogen tank of the utility model;

[0030] Figure 2 is the transmission connection diagram of a fishing device that can be used for a liquid nitrogen tank of the utility model.

[0031] In the drawings:

[0032] 1. Fishing device; 2. Operating rod; 3. Visualization component; 4. Motor; 5. Transmission component; 6. Flexible component; 7. Thermal insulation and protection coating; 8. Steel ring; 9. Fishing net; 10. Handle; 11. Sleeve rod; 12. LED lamp; 13. Camera; 14. Display screen; 15. Outer net; 16. Inner net; 17. Telescopic part; 18. Fixed part; 19. First soft steel wire; 20. Second soft steel wire. Detailed Embodiment

[0033] The technical solutions of the utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative work shall fall within the protection scope of the utility model.

[0034] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the utility model.

[0035] It should be specifically noted that the "horizontal" and "vertical" in the present utility model are used to describe the positional relationship, rather than strictly the "horizontal plane" or "vertical plane".

[0036] As Figure 1 and Figure 2 shown, there is shown a fishing device that can be used inside a liquid nitrogen tank in a preferred embodiment, which is characterized in that it includes: a fishing implement 1, the fishing implement 1 includes a steel ring 8 and a fishing net 9, the steel ring 8 has an opening, and the steel ring 8 is fixedly connected to the fishing net 9; an operating rod 2, the operating rod 2 includes a handle 10 and a sleeve rod 11, one end of the sleeve rod 11 is in contact with the steel ring 8, the steel ring 8 is deformably in a contracted state or an expanded state, and the other end of the sleeve rod 11 is connected to the handle 10; a visualization component 3, the visualization component includes an LED lamp 12, a camera 13 and a display screen 14, the LED lamp 12 and the camera 13 are both arranged at one end of the sleeve rod 11, and the display screen 14 is arranged at the other end of the sleeve rod 11; a motor 4, the motor 4 is arranged at the other end of the sleeve rod 11; a transmission component 5, the transmission component 5 is fixedly connected to the motor 4; a flexible component 6, the flexible component 6 is arranged inside the operating rod 2, one end of the flexible component 6 is connected to the transmission component 5, and the other end of the flexible component 6 is connected to the steel ring 8; a heat insulation and protection coating 7, the heat insulation and protection coating 7 is arranged on the outer periphery of the fishing implement 1 and the outer periphery of the handle 10. Further, when the motor 4 is started, the motor 4 makes the flexible component extend outwards through the transmission component 5, pushing the steel ring 8 to move in a direction away from the sleeve rod 11, and the steel ring 8 gradually expands during this process, so that the outer contour of the fishing implement 1 is enlarged to increase the fishing area, turn on the LED lamp 12 to illuminate, the camera 13 captures the real-time image inside the liquid nitrogen tank and transmits it to the display screen 14, and the operator precisely controls the fishing device to perform fishing operations according to the image on the display screen 14, ensuring that the cryotubes are safely and efficiently fished out.

[0037] Further, as a preferred embodiment, the transmission component 5 is arranged inside the sleeve rod 11, the motor 4 is arranged outside the sleeve rod 11, and a connection port is provided at the upper end of the sleeve rod 11 so that the transmission component 5 can pass through the connection port to be connected to the motor 4, one end of the flexible component 6 is wound around the transmission component 5, and the other end is fixedly connected to the steel ring 8.

[0038] Further, as a preferred embodiment, the motor 4 is used to drive the rotation of the transmission component 5, and the transmission component 5 is preferably a winding wheel.

[0039] Further, as a preferred embodiment, the flexible component 6 has a certain toughness in the length direction of the operating rod, so as to be able to apply a thrust to the steel ring 8 to drive the steel ring 8 to move in a direction away from the sleeve rod 11.

[0040] Further, as a preferred embodiment, the handle 10 and the sleeve rod 11 are preferably designed as an integral structure.

[0041] Further, as a preferred embodiment, the heat insulation and protection coating 7 can protect the operator from the low temperature of liquid nitrogen and ensure that the fishing device can work properly in an extremely low temperature environment.

[0042] Further, as a preferred embodiment, the steel ring 8 has an annular structure. The outer diameter of the steel ring 8 is 3 - 20 cm, and the upper end of the fishing net 9 is fixedly connected to the steel ring 8. Further, the steel ring 8 is made of a memory alloy steel material with high elasticity and low temperature resistance. The outer contour of the steel ring 8 is adjusted according to the caliber size of the liquid nitrogen tank to match the liquid nitrogen tank, and the steel ring 8 can still maintain its shape and elasticity under the extremely low temperature of liquid nitrogen.

[0043] Further, as a preferred embodiment, when the steel ring 8 is in a contracted state, the steel ring 8 is arranged inside one end of the sleeve rod 11; when the steel ring 8 is in an expanded state, the steel ring 8 is arranged outside one end of the sleeve rod 11.

[0044] Further, as a preferred embodiment, the fishing net 9 has a double-layer net structure. The double-layer net structure includes an outer net 15 and an inner net 16. The inner net 16 is arranged inside the outer net 15. The outer contours of the cross-sections of the outer net 15 and the inner net 16 along the radial direction are both circular. The length of the outer net 15 in the vertical direction is 15 - 30 cm, and the length of the inner net 14 in the vertical direction is 5 - 10 cm. The upper end of the inner net 16 is fixedly connected to the steel ring 8, and the upper end of the outer net 15 is fixedly connected to the steel ring 8. Further, when the fishing net 9 is immersed in the liquid nitrogen tank, liquid nitrogen will enter the fishing net 9. The flow of liquid nitrogen in the fishing net 9 will generate a certain pressure. The double-layer net structure of the fishing net 9 enables smaller cryotubes to pass through the inner net 16 and enter the outer net 15 after bearing a certain pressure, but will not break away from the outer net 15, thus ensuring that the cryotubes always stay inside the fishing net 9. Preferably, the size of the mesh of the outer net 15 is smaller than the size of the mesh of the inner net 16.

[0045] Further, as a preferred embodiment, the diameter of the upper end of the inner net 16 is equal to the diameter of the upper end of the outer net 15, and the outer contour of the cross-section of the inner net 16 along the radial direction gradually decreases from top to bottom. Further, the design that the outer contour of the cross-section of the inner net 16 gradually decreases from top to bottom helps to more firmly fix smaller cryotubes and prevent them from breaking away from the inner net 16 due to pressure or improper operation during the liquid nitrogen operation, further reducing the risk of spillage.

[0046] Further, as a preferred embodiment, the outer net 15 and the inner net 16 are made of materials with high strength, corrosion resistance and low temperature resistance, so that the outer net 15 and the inner net 16 will not deform or fail in a liquid nitrogen environment.

[0047] Further, as a preferred embodiment, the mesh aperture of the fishing net 9 is set to 0.5 cm, which is beneficial to balance the fishing efficiency and retention rate, can effectively prevent the leakage of the cryotube, and can also reduce the liquid nitrogen resistance caused by too dense mesh.

[0048] Further, as a preferred embodiment, the fishing net 9 adopts a hexagonal mesh arrangement so that the structure of the fishing net 9 is stable and not easily deformed and has strong permeability.

[0049] Further, as a preferred embodiment, the cross-sections of the handle 10 and the sleeve rod 11 along the radial direction are both rectangular. Further, the rectangular cross-section of the handle 10 along the radial direction is beneficial to the accurate consideration of the operation directivity. When encountering resistance, it can effectively prevent rotation, ensure the constancy and stability of the fishing direction, and thus improve the fishing efficiency.

[0050] Further, as a preferred embodiment, the fishing device 1 can be controlled by the handle 10 to move up and down, rotate, etc. to realize the fishing of the cryotube in the liquid nitrogen tank.

[0051] Further, as a preferred embodiment, the sleeve rod 11 has a telescopic structure. The sleeve rod 11 includes a telescopic part 17 and a fixed part 18. The telescopic part 17 and the fixed part 18 are slidably connected. The adjustable length range of the sleeve rod 11 in the horizontal direction is 50 - 100 cm, and the length of the sleeve rod 11 in the vertical direction is 1 - 2 cm. Further, the sleeve rod 11 is equipped with a multi-stage locking device to ensure the stability of the telescopic part 17 when adjusting the length of the telescopic part 17, facilitate operation and is beneficial to saving space.

[0052] Further, as a preferred embodiment, the sleeve rod 11 adopts an anti-slip texture design, which is beneficial to reducing slippage.

[0053] Further, as a preferred embodiment, the flexible component 6 includes a first soft wire 19 and a second soft wire 20. One end of the first soft wire 19 and one end of the second soft wire 20 are both connected to the transmission component 5. The other end of the first soft wire 19 is connected to one side of the opening of the steel ring 8, and the other end of the second soft wire 20 is connected to the other side of the opening of the steel ring 8.

[0054] Further, as a preferred embodiment, the opening of the steel ring 8 is arranged through the radial direction of the steel ring 8. The opening communicates the inner side and the outer side of the steel ring 8. The steel ring 8 is formed with the above-mentioned opening by interruption. The two sides of the opening are respectively the two ends of the steel ring 8. The first soft wire 19 and the second soft wire 20 are respectively fixedly connected to the two ends.

[0055] Further, as a preferred embodiment, a connecting line 21 is provided inside the sleeve rod 11, and the LED lamp 12 and the camera 13 are connected to the display screen 14 through the connecting line. Further, the real-time images captured by the camera 13 are efficiently transmitted to the display screen 14 through the connecting line, so that the operator can observe the situation inside the liquid nitrogen tank in real time, improving the accuracy and success rate of fishing.

[0056] Further, as a preferred embodiment, the LED lamp 12 is fixedly connected to the camera 13.

[0057] Further, as a preferred embodiment, one end of the telescopic part 17 is in contact with the steel ring 8, one end of the steel ring 8 with an opening extends into the telescopic part 17, the other end of the telescopic part 17 is connected to the fixed part 18, and both the LED lamp 12 and the camera 13 are arranged on the telescopic part 17.

[0058] Further, as a preferred embodiment, one end of the fixed part 18 is connected to the handle 10, the other end of the fixed part 18 is connected to the telescopic part 17, and both the motor 4 and the display screen 14 are arranged on the fixed part 18.

[0059] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.

[0060] The present invention further has the following implementation manners on the above basis:

[0061] In a further embodiment of the present invention, during the telescopic movement of the sleeve rod 11, the motor 4 can control the retraction and extension of the flexible component 6 accordingly to cooperate with the synchronous movement of the steel ring 8 at the telescopic part 17.

[0062] In a further embodiment of the present invention, the LED lamp 12 and the camera 13 are connected to a mobile device wirelessly. Further, the images captured by the camera 13 in real time are transmitted to the mobile device wirelessly, and the operator observes the situation inside the liquid nitrogen tank through the real-time images on the mobile device and performs precise fishing operations.

[0063] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A fishing device that can be used inside a liquid nitrogen tank, characterized in that, Comprising: A fishing device, the fishing device includes a steel ring and a fishing net, the steel ring has an opening, and the steel ring is fixedly connected to the fishing net; An operating rod, the operating rod includes a handle and a sleeve rod, one end of the sleeve rod is in contact with the steel ring, the steel ring is deformably in a contracted state or an expanded state, and the other end of the sleeve rod is connected to the handle; A visualization component, the visualization component includes an LED lamp, a camera and a display screen, the LED lamp and the camera are both arranged at one end of the sleeve rod, and the display screen is arranged at the other end of the sleeve rod; A motor, the motor is arranged at the other end of the sleeve rod; A transmission component, the transmission component is fixedly connected to the motor; A flexible component, the flexible component is arranged inside the operating rod, one end of the flexible component is connected to the transmission component, and the other end of the flexible component is connected to the steel ring; A heat insulation and protection coating, the heat insulation and protection coating is arranged on the outer periphery of the fishing device and the outer periphery of the handle.

2. The fishing device applicable to the inside of a liquid nitrogen tank according to claim 1, wherein, The steel ring has an annular structure, and the upper end of the fishing net is fixedly connected to the steel ring.

3. The fishing device that can be used inside a liquid nitrogen tank according to claim 1, characterized in that, The fishing net has a double-layer net structure, the double-layer net structure includes an outer net and an inner net, the inner net is arranged inside the outer net, the outer contours of the cross-sections of the outer net and the inner net along the radial direction are both circularly arranged, the upper end of the inner net is fixedly connected to the steel ring, the upper end of the outer net is fixedly connected to the steel ring, the diameter of the upper end of the inner net is equal to the diameter of the upper end of the outer net, and the outer contour of the cross-section of the inner net along the radial direction gradually decreases from top to bottom.

4. The fishing device that can be used inside a liquid nitrogen tank according to claim 1, wherein The cross-sections of the handle and the sleeve rod along the radial direction are both rectangular.

5. The fishing device applicable to a liquid nitrogen tank according to claim 1, characterized in that, The sleeve rod is a telescopic structure, the sleeve rod includes a telescopic part and a fixed part, and the telescopic part and the fixed part are slidably connected.

6. The fishing device applicable to the inside of a liquid nitrogen tank according to claim 1, characterized in that, The flexible component includes a first soft steel wire and a second soft steel wire, one end of the first soft steel wire and one end of the second soft steel wire are both connected to the transmission component, the other end of the first soft steel wire is connected to one side of the opening, and the other end of the second soft steel wire is connected to the other side of the opening.

7. The fishing device that can be used inside a liquid nitrogen tank according to claim 1, characterized in that, A connecting wire is arranged in the sleeve rod, and the LED lamp and the camera are both connected to the display screen through the connecting wire.

8. The fishing device applicable to a liquid nitrogen tank according to claim 1, wherein The LED lamp is fixedly connected to the camera.

9. The fishing device applicable to the inside of a liquid nitrogen tank according to claim 5, characterized in that, One end of the telescopic part is in contact with the steel ring, the end of the steel ring with the opening extends into the telescopic part, the other end of the telescopic part is connected to the fixed part, and the LED lamp and the camera are both arranged on the telescopic part.

10. The fishing device applicable to a liquid nitrogen tank according to claim 5, characterized in that, One end of the fixed part is connected to the handle, the other end of the fixed part is connected to the telescopic part, and the motor and the display screen are both arranged on the fixed part.

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