Fishing device capable of being used in liquid nitrogen tank

Abstract

The invention 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, rapidly and accurately, the catching efficiency is improved, the personal safety of operators is guaranteed, and the integrity and biological activity of samples in the cryopreservation tube are protected against damage; 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 invention relates to the technical field of biological sample preservation, and in particular to a fishing device that can be used in a liquid nitrogen tank. Background Art

[0002] In the field of biomedical research and clinical treatment, liquid nitrogen tanks, as key cryogenic storage equipment, are essential for ensuring the long-term stability and activity of biological samples. These samples, including but not limited to cell lines, genetic materials, tissue sections, germ cells, and precious biological agents, need to be stored in liquid nitrogen tanks at ultra-low temperatures to maintain their biological properties. The design of liquid nitrogen tanks usually includes a multi-layer insulation structure to maintain an extremely low temperature environment of around minus 196 degrees Celsius. Such low temperature conditions are ideal for most biological samples to preserve their activity for a long time.

[0003] However, the use of liquid nitrogen tanks is also accompanied by some challenges and risks. A common problem is the accidental fall of cryotubes. Due to operator negligence, vibration inside the liquid nitrogen tank, or unstable 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 differences in their physical properties and the density of liquid nitrogen. Some may sink to the bottom of the tank, while others may float on the surface of the liquid nitrogen. These uneven distributions bring additional challenges to sample management and capture.

[0004] The traditional method of catching samples in liquid nitrogen tanks mainly relies on manual operation, 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 mouth of the liquid nitrogen tank is often designed to be narrow, which further increases the difficulty of catching. Secondly, the operator needs to have a clear understanding of the precise location of the sample, but the rapid volatilization of liquid nitrogen often forms a large amount of fog, which seriously hinders the operator's vision, so that the operator often has to perform so-called "blind fishing" with obstructed vision. In addition, when catching samples in liquid nitrogen tanks, 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 catching process time-consuming and laborious, but also due to the complexity of the operation and the unpredictability of the environment in the tank, the sample may be damaged during the catching process, increasing the risk of sample damage. Traditional operations require taking out the entire cryorack first, and then harvesting them one by one. This not only increases the complexity of the operation, but also prolongs the exposure time of the cryorack and samples in the room temperature environment, which may have an adverse effect on the low-temperature stability and biological activity of the samples, and increase the risk of sample damage or functional decline. Furthermore, the extremely low temperature of liquid nitrogen poses a threat to the health of operators. Prolonged exposure to a liquid nitrogen environment may cause frostbite or other occupational health problems. Therefore, existing harvesting methods are insufficient in efficiency, safety, and sample protection.

[0005] In order to overcome the limitations of existing technologies, it is urgent to develop a new type of fishing tool that must be highly efficient, highly safe, and easy to operate. It should also be compatible with liquid nitrogen tanks of various specifications and quickly recover the fallen cryotubes through a rapid liquid nitrogen filtration mechanism while ensuring that the operator is not harmed by the low temperature environment. In this regard, it is necessary to propose a fishing device that can be used in liquid nitrogen tanks. Summary of the invention

[0006] In view of this, in order to solve the above problems, the object of the present invention is to provide a fishing device that can be used in a liquid nitrogen tank, comprising:

[0007] A fishing device, the fishing device comprising a steel ring and a fishing net, the steel ring having an opening, the steel ring being fixedly connected to the fishing net;

[0008] An operating rod, the operating rod comprising 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 light, a camera and a display screen, the LED light 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, wherein the motor is arranged at the other end of the sleeve rod;

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

[0012] A flexible component, wherein 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] A heat insulating and protective coating is provided on the periphery of the fishing device and the periphery of the handle.

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

[0015] In another preferred embodiment, the fishing net is a double-layer net structure, the fishing net is a double-layer net structure, the double-layer net structure includes an outer net and an inner net, the inner net is arranged on the inner side of the outer net, the outer contours of the radial cross-section of the outer net and the inner net are both circular, 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 radial cross-section of the inner net is gradually reduced 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 comprises 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 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.

[0019] In another preferred embodiment, a connecting wire is provided in the sleeve rod, and the LED light and the camera are connected to the display screen via the connecting wire.

[0020] In another preferred embodiment, the LED light 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 the LED light and the camera are both 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 the motor and the display screen are both arranged on the fixed part.

[0023] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

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

[0025] (1) Can significantly improve the fishing efficiency: The present invention can quickly adapt to liquid nitrogen tanks of different specifications, realize the rapid positioning and capture of cryopreservation tubes, and greatly reduce the fishing time. The effect is more prominent when processing a large number of samples, thereby improving the work efficiency of laboratories or medical institutions;

[0026] (2) Enhanced safety protection for operators: Through thermal insulation and protective coatings, the present invention can reduce the adverse effects of liquid nitrogen on operators, reduce the risk of frostbite and other occupational health problems, and provide operators with a safer working environment;

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

[0028] (4) Reduce sample exposure time: The efficient capture 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 room temperature environment, maximally protecting the integrity and biological characteristics of the samples, and meeting the stringent requirements for sample preservation in biomedical research and clinical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of a fishing device that can be used in a liquid nitrogen tank according to the present invention;

[0030] Figure 2 This is a transmission connection diagram of a fishing device that can be used in a liquid nitrogen tank according to the present invention.

[0031] In the attached figure:

[0032] 1. Fishing device; 2. Operating lever; 3. Visualization component; 4. Motor; 5. Transmission component; 6. Flexible component; 7. Thermal insulation and protective coating; 8. Steel ring; 9. Fishing net; 10. Handle; 11. Rod; 12. LED light; 13. Camera; 14. Display screen; 15. External net; 16. Internal net; 17. Telescopic part; 18. Fixed part; 19. First soft steel wire; 20. Second soft steel wire. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "lateral" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] It should be specially explained that the “horizontal” and “vertical” in the present invention are used to illustrate the positional relationship, and are not strictly “horizontal plane” or “vertical plane”.

[0036] like Figure 1 and Figure 2 As shown, a preferred embodiment of a fishing device that can be used in a liquid nitrogen tank is shown, characterized in that it includes: a fishing device 1, the fishing device 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 can be deformed 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 light 12, a camera 13 and The display screen 14, LED light 12 and camera 13 are all 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; the motor 4, the motor 4 is arranged at the other end of the sleeve rod 11; the transmission component 5, the transmission component 5 is fixedly connected to the motor 4; the 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; the heat insulation and protective coating 7, the heat insulation and protective coating 7 is arranged on the outer periphery of the fishing device 1 and the outer periphery of the handle 10. Further, when the motor 4 is started, the motor 4 extends the flexible component outward through the transmission component 5, pushing the steel ring 8 to move in the direction away from the sleeve rod 11, and the steel ring 8 gradually expands in the process, and then the outer contour of the fishing device 1 is enlarged to increase the fishing area, the LED light 12 is turned on to illuminate, and the camera 13 captures the real-time image inside the liquid nitrogen tank and transmits it to the display screen 14. The operator accurately controls the fishing device to perform fishing operations according to the image on the display screen 14 to ensure that the cryopreservation tube is safely and efficiently fished out.

[0037] Furthermore, as a preferred embodiment, the transmission component 5 is arranged in the sleeve rod 11, the motor 4 is arranged on the outside of the sleeve rod 11, and a connecting port is provided at the upper end of the sleeve rod 11 so that the transmission component 5 can pass through the connecting port to connect with the motor 4, one end of the flexible component 6 is wrapped 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] Furthermore, as a preferred embodiment, the flexible component 6 has a certain toughness along the length direction of the operating rod, so that a thrust can be applied to the steel ring 8 to drive the steel ring 8 to move in a direction away from the sleeve rod 11 .

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

[0041] Furthermore, as a preferred embodiment, the thermal insulation and protective coating 7 can protect the operator from the harm of the low temperature of liquid nitrogen and ensure that the fishing device can work normally in an extremely low temperature environment.

[0042] Further, as a preferred embodiment, the steel ring 8 is annular in 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 highly elastic and low-temperature resistant memory alloy steel material, and the outer contour of the steel ring 8 is adjusted according to the caliber 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 is a double-layer net structure, which includes an outer net 15 and an inner net 16. The inner net 16 is arranged on the inner side of the outer net 15. The outer contours of the radial cross-sections of the outer net 15 and the inner net 16 are both circular. The length of the outer net 15 along the vertical direction is 15-30 cm, and the length of the inner net 14 along 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, and 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 allows smaller cryopreservation tubes to pass through the inner net 16 and enter the outer net 15 after being subjected to a certain pressure, but will not leave the outer net 15, thereby ensuring that the cryopreservation tubes always stay in the fishing net 9. Preferably, the mesh size of the outer net 15 is smaller than the mesh size 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 radial cross section of the inner net 16 is gradually reduced from top to bottom. Further, the design that the outer contour of the radial cross section of the inner net 16 gradually decreases from top to bottom helps to more firmly fix smaller cryotubes, preventing them from detaching from the inner net 16 due to pressure or improper operation during liquid nitrogen operation, further reducing the risk of overflow.

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

[0047] Furthermore, as a preferred embodiment, the mesh size of the fishing net 9 is set to 0.5 cm, which is conducive to balancing the fishing efficiency and the retention rate, can effectively prevent the cryopreservation tube from leaking, and can also reduce the liquid nitrogen resistance caused by the overly dense mesh.

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

[0049] Furthermore, as a preferred embodiment, the cross-sections of the handle 10 and the sleeve rod 11 along the radial direction are both rectangular. Furthermore, the cross-sections of the handle 10 along the radial direction are both rectangular, which is conducive to the accurate consideration of the operation direction, and can effectively prevent rotation when encountering resistance, ensure the constancy and stability of the fishing direction, and thus promote fishing efficiency.

[0050] Furthermore, as a preferred embodiment, the handle 10 can be used to control the catcher 1 to move up and down, rotate, etc., so as to catch the cryopreservation tubes in the liquid nitrogen tank.

[0051] Further, as a preferred embodiment, the sleeve rod 11 is a telescopic structure, the sleeve rod 11 includes a telescopic portion 17 and a fixed portion 18, the telescopic portion 17 and the fixed portion 18 are slidably connected, the sleeve rod 11 has an adjustable length range of 50-100 cm in the horizontal direction, 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 that the telescopic portion 17 is stable when the length of the telescopic portion 17 is adjusted, which is convenient to operate and conducive to saving space.

[0052] Furthermore, as a preferred embodiment, the sleeve rod 11 adopts an anti-skid texture design, which is helpful to reduce slipping.

[0053] Further, as a preferred embodiment, the flexible component 6 includes a first soft steel wire 19 and a second soft steel wire 20, one end of the first soft steel wire 19 and one end of the second soft steel wire 20 are both connected to the transmission component 5, the other end of the first soft steel wire 19 is connected to one side of the opening of the steel ring 8, and the other end of the second soft steel 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 to penetrate along the radial direction of the steel ring 8, and the opening connects the inner side and the outer side of the steel ring 8. The steel ring 8 is formed with the above-mentioned opening by discontinuity, and the two sides of the opening are respectively the two ends of the steel ring 8, and the first soft steel wire 19 and the second soft steel wire 20 are respectively fixedly connected to the two ends.

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

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

[0057] Furthermore, as a preferred embodiment, one end of the telescopic part 17 is in contact with the steel ring 8, the steel ring 8 has an open end extending into the telescopic part 17, the other end of the telescopic part 17 is connected to the fixed part 18, and the LED light 12 and the camera 13 are both 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 , and the other end of the fixed part 18 is connected to the telescopic part 17 , and the motor 4 and the display screen 14 are both arranged on the fixed part 18 .

[0059] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0060] The present invention also has the following implementation modes based on the above:

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

[0062] In a further embodiment of the present invention, the LED light 12 and the camera 13 are connected to the mobile device by wireless means. Furthermore, the image captured by the camera 13 in real time is transmitted to the mobile device by wireless means, and the operator observes the situation in the liquid nitrogen tank and performs precise fishing operations through the real-time image on the mobile device.

[0063] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made 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 in a liquid nitrogen tank, characterized in that: include: A fishing device, the fishing device comprising a steel ring and a fishing net, the steel ring having an opening, the steel ring being fixedly connected to the fishing net; An operating rod, the operating rod comprising a handle and a sleeve rod, one end of the sleeve rod is in contact with the steel ring, the steel ring is deformable 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 light, a camera and a display screen, the LED light 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, wherein the motor is arranged at the other end of the sleeve rod; A transmission component, wherein the transmission component is fixedly connected to the motor; A flexible component, wherein 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 insulating and protective coating is provided on the periphery of the fishing device and the periphery of the handle.

2. The fishing device that can be used in a liquid nitrogen tank according to claim 1, characterized in that: The steel ring is annular in structure, and the upper end of the fishing net is fixedly connected to the steel ring.

3. The fishing device that can be used in a liquid nitrogen tank according to claim 1, characterized in that: The fishing net has a double-layer structure, which includes an outer net and an inner net. The inner net is arranged on the inner side of the outer net. The outer contours of the radial cross-sections of the outer net and the inner net are both circular. 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. The outer contour of the radial cross-section of the inner net is gradually reduced from top to bottom.

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

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

6. The fishing device that can be used in 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 in a liquid nitrogen tank according to claim 1, characterized in that: A connecting line is arranged in the sleeve rod, and the LED light and the camera are connected to the display screen via the connecting line.

8. The fishing device that can be used in a liquid nitrogen tank according to claim 1, characterized in that: The LED lamp is fixedly connected to the camera.

9. The fishing device that can be used in a liquid nitrogen tank according to claim 5, characterized in that: 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 the LED light and the camera are both arranged on the telescopic part.

10. The fishing device that can be used in 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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