Portable low-temperature liquid nitrogen temporary storage device

Abstract

The utility model discloses a portable low-temperature liquid nitrogen temporary storage device, which relates to the technical field of medical equipment, and comprises an outer barrel, an inner barrel, a liquid nitrogen inlet, a liquid nitrogen outlet, a liquid nitrogen outlet, a liquid nitrogen outlet and a liquid nitrogen outlet, and is characterized in that the outer barrel is used for containing liquid nitrogen and is provided with a barrel opening; the net cylinder is provided with a containing cavity with an opening in the top, the containing cavity is used for containing a cryopreservation tube or an EP tube, and an inlet is formed in the side face of the net cylinder; and the cylinder cover is buckled at the opening of the accommodating cavity. The cylinder nozzle is arranged on the side surface of the outer cylinder, extends into the outer cylinder and is communicated with the inlet; the net cover is in sliding connection with the side wall of the containing cavity, and the net cover slides in the axial direction of the net cylinder to open and close the opening; one end of the operating part is connected with the net cover, and the other end extends upwards to the outside of the net cylinder. According to the technical scheme provided by the utility model, the convenience, the safety and the recoverability of quick cryopreservation and short-distance transportation of preparations such as biological samples, cells and viruses by low-temperature liquid nitrogen are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a portable low-temperature liquid nitrogen temporary storage device. Background Art

[0002] In the medical field, portable small liquid nitrogen tanks are often needed for quick freezing, storage and transportation of biological materials such as blood samples and cell lines. These samples are usually stored in cryovials or EP tubes. The current portable liquid nitrogen tanks adopt an open structure, which leads to insufficient freezing time, the risk of liquid nitrogen splashing during the freezing process, high liquid nitrogen consumption during short-term storage and transportation, and the difficulty of recovering quick-frozen cryovials and EP tubes. Utility Model Content

[0003] The main purpose of the utility model is to provide a portable low-temperature liquid nitrogen temporary storage device, which aims to improve the quick-freezing efficiency and reliability of cryopreservation tubes or EP tubes during storage, facilitate the removal of cryopreservation tubes or EP tubes, and facilitate the recovery of liquid nitrogen.

[0004] To achieve the above-mentioned purpose, the present invention provides a portable low-temperature liquid nitrogen temporary storage device, comprising:

[0005] An outer cylinder is used to contain liquid nitrogen, and the outer cylinder is provided with a cylinder mouth;

[0006] The net cylinder has a receiving cavity with an opening at the top, the receiving cavity is used to hold cryopreservation tubes or EP tubes, and an inlet is provided on the side of the net cylinder;

[0007] a cylinder cover, buckled on the opening of the accommodating cavity;

[0008] a nozzle, provided on a side of the outer cylinder, the nozzle extending into the interior of the outer cylinder and communicating with the inlet;

[0009] a mesh cover slidably connected to the side wall of the accommodating cavity, wherein the mesh cover slides along the axial direction of the mesh cylinder to open and close the opening;

[0010] An operating member has one end connected to the mesh cover and the other end extending upward to the outside of the mesh cylinder.

[0011] In one embodiment, a cover is provided on the nozzle, and the cover is hinged to the edge of the nozzle to open and close the nozzle.

[0012] In one embodiment, a foolproof component is provided between the mesh cylinder and the outer cylinder. When the mesh cylinder is inserted into the outer cylinder, the foolproof component limits the mesh cylinder so that the inlet and the nozzle are positioned opposite each other.

[0013] In one embodiment, the foolproof component includes:

[0014] A raised portion is provided on the outer side wall of the net cylinder;

[0015] A slide groove is provided on the inner side wall of the outer cylinder, the slide groove extends along the axial direction of the outer cylinder, and the protrusion is slidably matched with the slide groove.

[0016] In one embodiment, a handle is provided on the top of the outer tube.

[0017] In one embodiment, the upper edge of the mesh cylinder protrudes from the upper edge of the outer cylinder.

[0018] In one embodiment, the outer cylinder has a side wall and a bottom wall surrounding the accommodating cavity, and at least one of the side wall and the bottom wall is hollow.

[0019] In one embodiment, casters are provided at the bottom of the outer cylinder.

[0020] In one embodiment, a window is provided on the side of the outer cylinder, and a transparent plate is provided at the window.

[0021] In one embodiment, the portable low-temperature liquid nitrogen temporary storage device further includes a buckle, wherein a plurality of the buckles are arranged at intervals along the outer circumference of the cylinder cover, and the buckle connects the cylinder cover and the outer cylinder.

[0022] In the technical solution of the present invention, the portable low-temperature liquid nitrogen temporary storage device includes an inner and outer double layer. The outer layer is provided with an outer cylinder, which has a top opening and is used to hold liquid nitrogen. A mesh cylinder is provided inside the outer cylinder, and the mesh cylinder is loaded or taken out from the cylinder mouth. The mesh cylinder has a accommodating cavity with a top opening, which is connected to the outer cylinder. Liquid nitrogen can enter the accommodating cavity, so that the cryotubes or EP tubes in the accommodating cavity are wrapped. When the cryotubes or EP tubes need to be taken out, it is only necessary to take the mesh cylinder out from the cylinder mouth. During this process, the liquid nitrogen will flow back to the outer cylinder, and the excess liquid nitrogen can be recovered through the cylinder mouth of the outer cylinder; when the mesh cylinder is taken out, only the cryotubes or EP tubes will remain in the mesh cylinder, which is convenient for taking out the cryotubes or EP tubes; in this solution, since the cryotubes or EP tubes are placed in the mesh cylinder, the cryotubes or EP tubes do not have the risk of falling into the outer cylinder as in traditional liquid nitrogen tanks, thereby improving the reliability of the storage of cryotubes or EP tubes. In addition, a cylinder cover is fastened at the opening of the accommodating chamber to prevent liquid nitrogen leakage, thereby improving the safety of the portable low-temperature liquid nitrogen temporary storage device; in order to facilitate the placement of cryogenic tubes or EP tubes, an inlet is provided on the side of the inner cylinder, and a nozzle is provided on the side of the outer cylinder to communicate with the inlet, and the cryogenic tubes or EP tubes can be placed into the inner cylinder through the nozzle, thereby improving the convenience of use; in addition, a mesh cover is provided at the inlet of the inner cylinder, and the mesh cover is driven to open and close the inlet by an operating member, which not only facilitates the placement of cryogenic tubes or EP tubes, but also prevents the cryogenic tubes or EP tubes from falling from the inlet, and is also conducive to improving the reliability of the mesh cylinder for storing cryogenic tubes or EP tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the portable low-temperature liquid nitrogen temporary storage device provided by the utility model;

[0025] Figure 2 This is another structural schematic diagram of the portable low-temperature liquid nitrogen temporary storage device provided by the utility model;

[0026] Figure 3 This is another structural schematic diagram of the portable low-temperature liquid nitrogen temporary storage device provided by the utility model.

[0027] Description of Figure Numbers:

[0028] 100, outer cylinder; 200, mesh cylinder; 300, cylinder cover; 400, cylinder nozzle; 500, cover body; 600, foolproof component; 610, raised portion; 620, slide groove; 710, mesh cover; 720, operating part; 800, handle; 900, buckle.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In order to improve the reliability of cryopreservation tubes or EP tubes during storage and facilitate the removal of cryopreservation tubes or EP tubes, the present technical solution proposes a portable low-temperature liquid nitrogen temporary storage device, including: an outer cylinder 100, used to hold liquid nitrogen, and the outer cylinder 100 is provided with a cylinder mouth; a mesh cylinder 200, having a accommodating cavity with a top opening, the accommodating cavity is used to hold cryopreservation tubes or EP tubes, the mesh cylinder 200 enters and exits the outer cylinder 100 from the cylinder mouth, and the outer peripheral wall of the mesh cylinder 200 is densely covered with flow holes connected to the accommodating cavity; a cylinder cover 300, which is snapped into the opening of the accommodating cavity.

[0034] like Figures 1 to 3In one embodiment of the present invention, the portable low-temperature liquid nitrogen temporary storage device consists of an inner and outer layer structure, the outer layer is an outer cylinder 100, the outer cylinder 100 can be a cylindrical structure, and a cylinder mouth is provided on the top of the outer cylinder 100 for holding liquid nitrogen; the inner layer is a mesh cylinder 200, the mesh cylinder 200 can also be a cylindrical structure, the outer size of the mesh cylinder 200 is adapted to the size of the internal volume of the outer cylinder 100, the mesh cylinder 200 can slide in or out of the outer cylinder 100 from the cylinder mouth of the outer cylinder 100, the mesh cylinder 200 has a accommodating cavity with a top opening, which is specifically used to store cryopreservation tubes or EP tubes, in addition, flow holes are evenly distributed on the outer peripheral wall of the mesh cylinder 200, these holes are connected to the accommodating cavity of the mesh cylinder 200, and the size of the flow holes is smaller than the size of the cryopreservation tubes or EP tubes, so that the cryopreservation tubes or EP tubes will not fall out of the mesh cylinder 200. ; When the mesh tube 200 is placed in the outer tube 100, liquid nitrogen can flow into the accommodating cavity through the flow hole, ensuring that the cryopreservation tube or EP tube is completely immersed in the liquid nitrogen to maintain a low-temperature environment. When the cryopreservation tube or EP tube needs to be taken out, it is only necessary to lift the entire mesh tube 200 from the outer tube 100. At this time, the liquid nitrogen will flow back to the outer tube 100 through the flow hole, so that only the cryopreservation tube or EP tube remains in the mesh tube 200, which is convenient for taking and placing the cryopreservation tube or EP tube. Compared with the existing solution, the present solution provides a structure in which the mesh tube 200 is matched with the outer tube 100, which avoids the problem that the cryopreservation tube or EP tube may fall into the outer tube 100 under the traditional structure, thereby improving the reliability of the storage of the cryopreservation tube or EP tube. In addition, when taking out the cryopreservation tube or EP tube, it is only necessary to take out the mesh tube 200, which is also convenient for taking and placing the cryopreservation tube or EP tube. In order to further improve the safety of use, a cylinder cover 300 can be provided at the opening of the accommodating cavity to seal the net cylinder 200, thereby preventing liquid nitrogen from leaking, ensuring the safety of users and protecting the environment from pollution.

[0035] like Figure 1 and Figure 3In one embodiment of the present invention, a nozzle 400 is provided on the side of the outer cylinder 100, and the nozzle 400 extends to the interior of the outer cylinder 100. An inlet is provided on the side of the mesh cylinder 200, and the inlet is communicated with the nozzle 400. In this scheme, in order to facilitate the storage of cryopreservation tubes or EP tubes, a nozzle 400 structure is also convexly provided on the side of the outer cylinder 100, and the nozzle 400 extends obliquely, and the nozzle 400 extends to be connected with the interior of the outer cylinder 100. In addition, an inlet is also provided on the side of the mesh cylinder 200, and the part of the nozzle 400 extending into the outer cylinder 100 is opposite to the inlet. When the EP tube needs to be stored, the cryopreservation tube or EP tube only needs to be placed in the nozzle 400, and the cryopreservation tube or EP tube can roll into the interior of the outer cylinder 100 under the action of gravity and enter the mesh cylinder 200 from the inlet. There is no need to open and close the cylinder cover 300, which facilitates the storage of cryopreservation tubes or EP tubes. In addition, in order to further improve the safety of use, in another embodiment of the present invention, a cover 500 is provided on the nozzle 400, and the cover 500 is hinged to the edge of the nozzle 400 to open and close the nozzle 400. The cover 500 can be a flat structure, and the size of the cover 500 can be larger than the size of the nozzle 400. The cover 500 can be connected to the edge of the nozzle 400 by a hinge, and the nozzle 400 can be opened or closed by flipping the cover 500. When there is no need to store cryotubes or EP tubes, the nozzle 400 can be closed with the cover 500 to prevent leakage of liquid nitrogen, thereby ensuring the safety of the user.

[0036] like Figure 2 In one embodiment of the present invention, the portable low-temperature liquid nitrogen temporary storage device also includes a mesh cover 710, which is slidably connected to the side wall of the accommodating chamber, and the mesh cover 710 slides along the axial direction of the mesh cylinder 200 to open and close the opening; and an operating member 720, one end of which is connected to the mesh cover 710 and the other end extends upward to the outside of the mesh cylinder 200; wherein the mesh cover 710 is arranged on the inner side wall of the accommodating chamber, and the mesh cover 710 has an arc-shaped plate structure to fit with the inner side wall of the accommodating chamber. In addition, a slide groove 620 is provided around the inlet, and the mesh cover 710 is slidably connected to the slide groove 620. The inlet can be closed or opened by sliding the mesh cover 710. In addition, an operating member is connected above the mesh cover 710. 720. The operating member 720 can be a soft rope. The operating member 720 extends upward and passes through the cylinder cover 300. When the entrance needs to be opened, the operating member 720 only needs to be pulled upward. After the operating member 720 is released, the mesh cover 710 falls under the action of gravity and closes the entrance. In this position, the inner side wall of the accommodating cavity can be provided with a support platform to support the mesh cover 710 in the position of closing the entrance, keeping the entrance in a normally closed state. In this way, when it is necessary to put in a cryogenic tube or EP tube, the entrance can be opened. After putting in the cryogenic tube or EP tube, the entrance can be closed to prevent the cryogenic tube or EP tube from falling out of the entrance during transportation, thereby further improving the reliability of the use of the device.

[0037] When the net tube 200 is inserted into the outer tube 100, the anti-foolproof component 600 limits the net tube 200 so that the inlet and the nozzle 400 are opposite to each other. In this solution, the anti-foolproof component 600 can be a buckle set at the top of the net tube 200 and the top of the outer tube 100. When the net tube 200 is inserted into the outer tube 100, the anti-foolproof component 600 is used to snap the net tube 200 and the outer tube 100 together at a specific angle, so that the inlet of the net tube 200 is opposite to the position of the nozzle 400, which facilitates the smooth entry of the freezing tube or EP tube into the net tube 200 from the nozzle 400. In this way, the user can install the net tube 200 in place without carefully adjusting the angle between the net tube 200 and the outer tube 100 during use, thereby improving the convenience of use of the portable low-temperature liquid nitrogen temporary storage device. Figure 2 and Figure 3 FIG shows a structural form of the foolproof component 600. In this solution, the foolproof component 600 includes a protrusion 610 and a chute 620. The protrusion 610 can be arranged on the outer wall of the net cylinder 200. The protrusion 610 can extend a certain length along the axial direction of the net cylinder 200. The chute 620 is arranged on the inner wall of the outer cylinder 100. The chute 620 extends along the fixed axial direction of the outer cylinder 100 and extends from the top of the outer cylinder 100 to the bottom of the outer cylinder 100. The shape and size of the chute 620 can be adapted to the protrusion 610. When the net cylinder 200 is loaded into the outer cylinder 100, the protrusion 610 can extend to a certain length. 00, the protrusion 610 can be inserted into the slide groove 620. As the net cylinder 200 is gradually loaded, the protrusion 610 slides from the top to the bottom of the slide groove 620, and finally the inlet of the net cylinder 200 is aligned with the nozzle 400. During the whole process, the slide groove 620 provides a limit for the protrusion 610, restricting the rotation of the net cylinder 200, thereby ensuring that the angle of the net cylinder 200 before and after loading does not change, and since no other slide grooves 620 are provided on the outer cylinder 100, the net cylinder 200 can only be loaded from a specific angle, ensuring the accuracy of the loading of the net cylinder 200.

[0038] like Figure 1 and Figure 3In one embodiment of the present invention, a handle 800 is provided on the top of the outer cylinder 100; the two ends of the handle 800 can be hinged to the two sides of the outer cylinder 100. By providing the handle 800, the portable low-temperature liquid nitrogen temporary storage device can be easily taken out, placed in, and transported. In addition, to facilitate the removal of the net cylinder 200, in another embodiment of the present invention, the height of the net cylinder 200 can be higher than the depth of the internal cavity of the outer cylinder 100. When the outer cylinder 100 is installed in the net cylinder 200, the upper edge of the net cylinder 200 can protrude from the upper edge of the outer cylinder 100. When the net cylinder 200 needs to be removed, it can be lifted by simply grasping the top of the net cylinder 200, which is convenient for the user. Furthermore, to enhance the thermal insulation effect, in another embodiment of the present invention, the outer cylinder 100 includes side walls and a bottom wall surrounding the accommodating cavity, with at least one of the side walls and the bottom wall being hollow. Specifically, the outer peripheral wall of the outer cylinder 100 is hollow, which reduces heat transfer and enhances the thermal insulation effect of the liquid nitrogen within the outer cylinder 100. Of course, to further enhance the thermal insulation effect, the hollow area may be filled with thermal insulation material or vacuumed, without limitation herein.

[0039] To facilitate transportation of the outer cylinder 100, another embodiment of the present invention includes casters at the bottom of the outer cylinder 100. These casters can be universal wheels, with multiple casters spaced along the edge of the bottom of the outer cylinder 100 to enhance stability. The outer cylinder 100 can be moved on the ground via the casters, thus enhancing ease of transport. Furthermore, to facilitate observation of the interior of the device, a window can be provided on the side of the outer cylinder 100. A transparent panel, such as an acrylic panel, can be installed in the window, allowing the user to observe the liquid nitrogen level and the status of the cryotubes or EP tubes, further enhancing ease of use.

[0040] like Figure 1 In one embodiment of the present invention, the liquid nitrogen temporary storage device further includes a buckle, which can be a conventional model on the market. The two ends of the buckle are respectively connected to the cylinder cover 300 and the outer cylinder 100. When the cylinder cover 300 needs to be opened, it is only necessary to open the buckle. When the cylinder cover 300 is buckled on the mesh cylinder 200, the buckle is closed at this time. The buckle will press the cylinder cover 300 together with the mesh cylinder onto the outer cylinder 100, which can prevent liquid nitrogen leakage and improve safety of use. In addition, multiple buckles can be provided, and multiple buckles can be arranged at intervals around the cylinder cover 300 to improve the tightness of the cylinder cover 300 after buckling.

[0041] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A portable low-temperature liquid nitrogen temporary storage device, characterized in that: include: An outer cylinder is used to contain liquid nitrogen, and the outer cylinder is provided with a cylinder mouth; The net cylinder has a receiving cavity with an opening at the top, the receiving cavity is used to hold cryopreservation tubes or EP tubes, and an inlet is provided on the side of the net cylinder; a cylinder cover, buckled on the opening of the accommodating cavity; a nozzle, provided on a side of the outer cylinder, the nozzle extending into the interior of the outer cylinder and communicating with the inlet; a mesh cover slidably connected to the side wall of the accommodating cavity, wherein the mesh cover slides along the axial direction of the mesh cylinder to open and close the opening; An operating member has one end connected to the mesh cover and the other end extending upward to the outside of the mesh cylinder.

2. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: A cover is provided on the nozzle, and the cover is hinged to the edge of the nozzle to open and close the nozzle.

3. The portable low-temperature liquid nitrogen temporary storage device according to claim 2, characterized in that: An anti-foolproof component is provided between the mesh cylinder and the outer cylinder. When the mesh cylinder is installed in the outer cylinder, the anti-foolproof component limits the mesh cylinder so that the inlet and the nozzle are positioned opposite to each other.

4. The portable low-temperature liquid nitrogen temporary storage device according to claim 3, characterized in that: The foolproof component includes: A raised portion is provided on the outer side wall of the net cylinder; A slide groove is provided on the inner side wall of the outer cylinder, the slide groove extends along the axial direction of the outer cylinder, and the protrusion is slidably matched with the slide groove.

5. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: A handle is provided on the top of the outer cylinder.

6. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: The upper edge of the net cylinder protrudes from the upper edge of the outer cylinder.

7. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: The outer cylinder has a side wall and a bottom wall surrounding the accommodating cavity, and at least one of the side wall and the bottom wall is hollow.

8. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: Casters are provided at the bottom of the outer cylinder.

9. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: A window is provided on the side of the outer cylinder, and a transparent plate is provided at the window.

10. The portable low-temperature liquid nitrogen temporary storage device according to claim 1, characterized in that: The portable low-temperature liquid nitrogen temporary storage device further includes a buckle, a plurality of which are arranged at intervals along the outer circumference of the cylinder cover, and the buckle connects the cylinder cover and the outer cylinder.

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