Preservation device convenient for accurately selecting frozen embryos

Abstract

The utility model aims to provide a preservation device convenient for accurately selecting frozen embryos, and relates to the technical field of medical instruments, a taking-out hole is formed above a liquid nitrogen tank, a taking-out device is arranged in the taking-out hole, a selector is arranged on a freezing bracket, and an embryo tube on the freezing bracket is pulled out by lifting the selector, so that the frozen embryos are accurately selected. The embryo tube in the taking-out hopper can be taken out by lifting up the taking-out hopper and rotating the second sealing cover, the taking-out hopper can block the lower end of the taking-out tube when the taking-out hopper is lifted up, leakage of liquid nitrogen after the second sealing cover is opened is effectively reduced, and harm of the liquid nitrogen to workers is effectively avoided. Meanwhile, scales are arranged at the upper end of the outer rod corresponding to the distance and the number of the carrying cylinders, the embryo tubes on the freezing stent can be accurately taken out through a selector without opening a sealing cover to take out the freezing stent, the efficiency of selecting the embryo tubes is improved, the temperature of the liquid nitrogen tank can be maintained through a temperature control device and the liquid nitrogen tank, and the quality of frozen embryos is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a preservation device for facilitating the precise selection of frozen embryos. Background Art

[0002] The existing embryo cryopreservation is carried out by a liquid nitrogen tank. Each liquid nitrogen tank can store multiple embryos. Since each embryo is different, when the staff takes them, they need to open the lid of the liquid nitrogen tank and take out the freezing bracket containing multiple embryos for selection. However, only one or two embryos need to be taken out for thawing each time. The following problems exist when taking them:

[0003] 1. Currently, when selecting embryos, due to the influence of liquid nitrogen on the line of sight, the condensed water vapor covers the bracket, which not only wastes the selection time, but also affects the activity of the remaining embryos because each embryo is exposed to room temperature. When the staff selects and takes them for a long time, there is also a safety risk of frostbite on the hands by liquid nitrogen.

[0004] 2. The number of freezing brackets stored in each bucket in the existing liquid nitrogen tank is limited, resulting in a limited number of stored embryos and extremely low storage efficiency, and the storage space of the liquid nitrogen tank cannot be fully utilized.

[0005] 3. The liquid nitrogen in the existing freezing tank will continuously decrease during use and needs to be frequently added. However, each time liquid nitrogen is added, the cover plate needs to be opened, which is very troublesome and will also expose the freezing bracket to room temperature multiple times, thus affecting the quality of the frozen embryos. Summary of the Utility Model

[0006] In view of the deficiencies of the prior art, the utility model provides the following technical solutions:

[0007] A preservation device for facilitating the precise selection of frozen embryos, comprising a liquid nitrogen tank and embryo tubes. An extraction hole is opened above the liquid nitrogen tank, and a plurality of jacks are circumferentially arranged around the extraction hole above the liquid nitrogen tank. An extractor is slidably arranged in the extraction hole. The extractor includes an extraction hopper, an extraction tube and an extraction handle. The upper end of the extraction tube is fixedly connected to the extraction hole. The extraction hopper is movably installed in the extraction tube. A second sealing cover is threadedly installed on the extraction hole. The extraction handle slidably passes through the second sealing cover and is fixedly connected to the extraction hopper;

[0008] A freezing bracket is detachably installed in the socket. The embryo tube is detachably installed on the freezing bracket, and a selector is slidably arranged in the freezing bracket. The selector includes an outer rod, an inner rod and a lever. A first sealing cover is threadedly installed on the socket, and the upper end of the freezing bracket is fixedly connected to the first sealing cover. The outer rod slidably penetrates into the freezing bracket, and the lever is rotatably installed at the lower end of the outer rod. The inner rod is slidably inserted into the outer rod. The rotation and unfolding of the lever are controlled by the sliding of the inner rod, and the lever is driven by sliding the outer rod upward to pick the embryo tube off the freezing bracket and drop it into the extraction hopper. The extraction hopper slides into the extraction tube and blocks the lower end of the extraction tube.

[0009] Further, a collection hopper is fixedly arranged in the liquid nitrogen tank. The lower end of the extraction tube is fixedly connected to the collection hopper, and both sides of the lower end of the extraction tube are of an open structure. The outer diameter of the extraction hopper is equal to the inner diameter of the extraction tube.

[0010] Further, a plurality of carrier cylinders are fixedly arranged in a linear arrangement on the freezing bracket. The embryo tube is slidably inserted into the carrier cylinder. A sliding groove is formed on one side of the freezing bracket close to the carrier cylinder. The lever is located in the sliding groove. A through groove is formed at the lower end of the carrier cylinder and communicated with the sliding groove. The embryo tube in the carrier cylinder is lifted out of the carrier cylinder by sliding the unfolded lever upward through sliding the outer rod and passing through the through groove.

[0011] Further, the lever is connected to the outer rod through a rotating shaft. The rotating shaft is fixedly connected to the lever, and a gear is fixedly arranged on the rotating shaft. The rotating shaft is rotatably connected to the outer rod. A toothed structure meshing with the gear is arranged at the lower end of the inner rod. The rotation of the gear is driven by sliding the inner rod downward, so as to drive the lever to rotate and unfold.

[0012] Further, scales are arranged at the upper end of the outer rod of the selector corresponding to the quantity and positions of the carrier cylinders. The distance between the scales is equal to the distance between the carrier cylinders.

[0013] Further, a liquid nitrogen box is fixedly arranged below the liquid nitrogen tank and communicated with the liquid nitrogen tank, and a switch is arranged between the liquid nitrogen box and the liquid nitrogen tank. The communication or closing between the liquid nitrogen box and the liquid nitrogen tank is controlled by the opening and closing of the switch.

[0014] Further, a temperature control device is arranged in the liquid nitrogen tank to monitor the temperature in the liquid nitrogen tank and control the opening and closing of the switch through the temperature control device.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] 1. By arranging a plurality of sockets on the liquid nitrogen tank and detachably installing a freezing bracket in the sockets, and arranging a plurality of carrier cylinders in a linear arrangement on the freezing bracket, a plurality of embryo tubes containing embryos can be placed, making full use of the storage space of the liquid nitrogen tank and improving the storage efficiency;

[0017] 2. The present utility model opens a removal hole above the liquid nitrogen tank, installs a remover in the removal hole, and installs a selector on the freezing bracket. By sliding the inner rod of the selector, the control lever is rotated and unfolded. By lifting the selector, the control lever is used to pick out the embryo tube on the freezing bracket, which falls onto the collection hopper and slides into the removal hopper of the remover. By lifting the removal hopper and rotating the second sealing cover, the embryo tube in the removal hopper can be taken out. When the removal hopper is lifted, the removal hopper can block the lower end of the removal tube, effectively reducing the leakage of liquid nitrogen after the second sealing cover is opened, effectively avoiding the harm of liquid nitrogen to the staff. At the same time, scales are set at the upper end of the outer rod corresponding to the spacing and quantity of the carrier cylinders. Without opening the first sealing cover to take out the freezing bracket, the embryo tube on the freezing bracket can be accurately taken out through the selector, improving the efficiency of selecting the embryo tube;

[0018] 3. The present utility model sets a liquid nitrogen tank at the lower end of the liquid nitrogen tank, which is connected to the liquid nitrogen tank, and installs a switch between the liquid nitrogen tank and the liquid nitrogen tank. A temperature control device is installed in the liquid nitrogen tank to monitor the temperature in the liquid nitrogen tank. Thus, when the temperature in the liquid nitrogen tank drops, the temperature control device controls the switch to conduct, and the liquid nitrogen in the liquid nitrogen tank is replenished into the liquid nitrogen tank to maintain the temperature in the liquid nitrogen tank and ensure the quality of the frozen embryos. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a schematic diagram of the internal sectional structure of the present utility model;

[0021] Figure 3 is an enlarged schematic diagram of the internal section at A of the present utility model;

[0022] Figure 4 is an enlarged schematic diagram of the internal section at B of the present utility model;

[0023] Figure 5 is a schematic diagram of the structure of the selector and the remover of the present utility model;

[0024] Figure 6 is a schematic diagram of the structure of the selector and the removal hopper of the present utility model.

[0025] In the figure: liquid nitrogen tank - 1, jack - 101, removal hole - 102, collection hopper - 103, liquid nitrogen tank - 2, temperature control device - 3, first sealing cover - 4, second sealing cover - 5, selector - 6, outer rod - 601, inner rod - 602, control lever - 603, remover - 7, removal hopper - 701, removal tube - 702, removal handle - 703, freezing bracket - 8, carrier cylinder - 801, embryo tube - 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1:

[0028] Please refer to Figure 1-6 , a preservation device for facilitating the precise selection of frozen embryos, including a liquid nitrogen tank 1 and an embryo tube 9. An extraction hole 102 is opened above the liquid nitrogen tank 1, and a plurality of jacks 101 are circumferentially arranged around the extraction hole 102 above the liquid nitrogen tank 1. A freezing bracket 8 is detachably installed in the jack 101. A plurality of carrier cylinders 801 are linearly arranged and fixedly arranged on the freezing bracket 8. The embryo tube 9 is slidably inserted into the carrier cylinder 801 to place a plurality of embryo tubes 9 containing embryos, making full use of the storage space of the liquid nitrogen tank 1 and improving the storage efficiency.

[0029] Embodiment 2:

[0030] Please refer to Figure 1-6 , according to Embodiment 1, an extractor 7 is slidably arranged in the extraction hole 102. The extractor 7 includes an extraction hopper 701, an extraction tube 702, and an extraction handle 703. The upper end of the extraction tube 702 is fixedly connected to the extraction hole 102. The extraction hopper 701 is movably installed in the extraction tube 702. A second sealing cover 5 is threadedly installed on the extraction hole 102 to seal the extraction hole 102. The extraction handle 703 slidably passes through the second sealing cover 5 and is fixedly connected to the extraction hopper 701; a freezing bracket 8 is detachably installed in the jack 101. The embryo tube 9 is detachably installed on the freezing bracket 8, and a selector 6 is slidably arranged in the freezing bracket 8. The selector 6 includes an outer rod 601, an inner rod 602, and a lever 603. A first sealing cover 4 is threadedly installed on the jack 101 to seal the jack 101. The upper end of the freezing bracket 8 is fixedly connected to the first sealing cover 4. The outer rod 601 slidably penetrates into the freezing bracket 8, and the lever 603 is rotatably installed at the lower end of the outer rod 601. The inner rod 602 is slidably inserted into the outer rod 601. By sliding the inner rod 602, the lever 603 is controlled to rotate and unfold, and by sliding the outer rod 601 upward, the lever 603 is driven to pick the embryo tube 9 off the freezing bracket 8 and fall into the extraction hopper 701. By lifting the extraction hopper 701 upward, it slides into the extraction tube 702 to block the lower end of the extraction tube 702;

[0031] In this embodiment, a collecting hopper 103 is fixedly arranged in the liquid nitrogen tank 1. The lower end of the extraction pipe 702 is fixedly connected to the collecting hopper 103, and both sides of the lower end of the extraction pipe 702 are of an open structure, so that the dropped embryo tubes 9 can slide into the extraction hopper 701 through the collecting hopper 103. The outer diameter of the extraction hopper 701 is equal to the inner diameter of the extraction pipe 702, so that when the extraction hopper 701 is lifted and slides into the extraction pipe 702, it can well block the lower end of the extraction pipe 702 and prevent liquid nitrogen from leaking when the cover is opened;

[0032] In this embodiment, a plurality of carrier cylinders 801 are linearly and fixedly arranged on the freezing bracket 8. The embryo tubes 9 are slidably inserted into the carrier cylinders 801. A sliding groove is formed on one side of the freezing bracket 8 close to the carrier cylinders 801. The dial rod 603 is located in the sliding groove. A through groove is formed at the lower end of the carrier cylinder 801 and communicated with the sliding groove. By driving the unfolded dial rod 603 to slide upward through the sliding outer rod 601, the embryo tube 9 in the carrier cylinder 801 is lifted out of the carrier cylinder 801 after sliding through the through groove; The dial rod 603 is connected to the outer rod 601 through a rotating shaft. The rotating shaft is fixedly connected to the dial rod 603, and a gear is fixedly arranged on the rotating shaft. The rotating shaft is rotatably connected to the outer rod 601. A toothed structure meshing with the gear is arranged at the lower end of the inner rod 602. By lowering the inner rod 602 to drive the gear to rotate, the dial rod 603 is driven to rotate and unfold. The upper end of the outer rod 601 is provided with scales corresponding to the number and positions of the carrier cylinders 801, and the spacing of the scales is equal to the spacing of the carrier cylinders 801;

[0033] In this embodiment, an extraction hole 102 is opened above the liquid nitrogen tank 1. An extractor 7 is arranged in the extraction hole 102, and a selector 6 is arranged on the freezing bracket 8. By sliding the inner rod 602 of the selector 6, the dial rod 603 is controlled to rotate and unfold. By lifting the selector 6, the dial rod 603 is controlled to pick out the embryo tube 9 on the freezing bracket 8 and fall onto the collecting hopper 103 and slide into the extraction hopper 701 of the extractor 7. By lifting the extraction hopper 701 and rotating the second sealing cover 5, the embryo tube 9 in the extraction hopper 701 can be taken out. When the extraction hopper 701 is lifted, the extraction hopper 701 can block the lower end of the extraction pipe 702, effectively reducing the leakage of liquid nitrogen after the second sealing cover 5 is opened, effectively avoiding the harm of liquid nitrogen to the staff. At the same time, scales are arranged at the upper end of the outer rod 601 corresponding to the spacing and number of the carrier cylinders 802. Without opening the first sealing cover 4 to take out the freezing bracket 8 through the selector 6, the embryo tube 9 on the freezing bracket 8 can be accurately taken out, improving the efficiency of selecting the embryo tube 9.

[0034] Embodiment 3:

[0035] Please refer to Figure 1-6, according to Embodiments 1-2, a liquid nitrogen tank 2 is fixedly arranged below the liquid nitrogen tank 1 and is communicated with the liquid nitrogen tank 1, and a switch is arranged between the liquid nitrogen tank 2 and the liquid nitrogen tank 1 to control the communication or closing of the liquid nitrogen tank 2 and the liquid nitrogen tank 1 through the opening and closing of the switch. A temperature control device 3 is arranged in the liquid nitrogen tank 1 to monitor the temperature in the liquid nitrogen tank 1 and control the opening and closing of the switch through the temperature control device 3. Thus, when the temperature of the liquid nitrogen tank 1 drops, the temperature control device 3 controls the switch to conduct, and the liquid nitrogen in the liquid nitrogen tank 2 is replenished into the liquid nitrogen tank 1 to maintain the temperature in the liquid nitrogen tank 1 and ensure the quality of the frozen embryos.

[0036] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A preservation device for facilitating the precise selection of frozen embryos, comprising a liquid nitrogen tank and an embryo tube, characterized in that, An extraction hole is opened above the liquid nitrogen tank, and a number of insertion holes are opened in a circumferential array around the extraction hole above the liquid nitrogen tank. An extractor is slidably arranged in the extraction hole. The extractor includes an extraction hopper, an extraction pipe and an extraction handle. The upper end of the extraction pipe is fixedly connected to the extraction hole. The extraction hopper is movably installed in the extraction pipe. A second sealing cover is threadedly installed on the extraction hole. The extraction handle slidably passes through the second sealing cover and is fixedly connected to the extraction hopper. A freezing bracket is detachably installed in the insertion hole. The embryo tube is detachably installed on the freezing bracket. A selector is slidably arranged in the freezing bracket. The selector includes an outer rod, an inner rod and a lever. A first sealing cover is threadedly installed on the insertion hole. The upper end of the freezing bracket is fixedly connected to the first sealing cover. The outer rod slidably penetrates into the freezing bracket, and the lever is rotatably installed at the lower end of the outer rod. The inner rod is slidably inserted into the outer rod. By sliding the inner rod, the lever is rotated and unfolded. By sliding the outer rod upward, the lever is driven to pick the embryo tube off the freezing bracket and drop it into the extraction hopper. By sliding the extraction hopper upward, it slides into the extraction pipe and blocks the lower end of the extraction pipe.

2. The preservation device for facilitating the precise selection of frozen embryos according to claim 1, wherein, A collection hopper is fixedly arranged in the liquid nitrogen tank. The lower end of the extraction pipe is fixedly connected to the collection hopper, and both sides of the lower end of the extraction pipe are of an open structure. The outer diameter of the extraction hopper is equal to the inner diameter of the extraction pipe.

3. The preservation device for facilitating the precise selection of frozen embryos according to claim 1, characterized in that, A number of carrier cylinders are fixedly arranged linearly on the freezing bracket. The embryo tube is slidably inserted into the carrier cylinder. A sliding groove is opened on one side of the freezing bracket close to the carrier cylinder. The lever is located in the sliding groove. A through groove is opened at the lower end of the carrier cylinder and communicated with the sliding groove. By sliding the outer rod upward to drive the unfolded lever, the lever slides over the through groove to lift the embryo tube in the carrier cylinder out of the carrier cylinder.

4. The preservation device for facilitating the precise selection of frozen embryos according to claim 3, wherein, The lever is connected to the outer rod through a rotating shaft. The rotating shaft is fixedly connected to the lever, and a gear is fixedly arranged on the rotating shaft. The rotating shaft is rotatably connected to the outer rod. A toothed structure meshing with the gear is arranged at the lower end of the inner rod. By sliding the inner rod downward, the gear is driven to rotate, thereby driving the lever to rotate and unfold.

5. The preservation device for facilitating the precise selection of frozen embryos according to claim 4, wherein Scales are arranged at the upper end of the outer rod of the selector corresponding to the quantity and positions of the carrier cylinders. The spacing of the scales is equal to the spacing of the carrier cylinders.

6. The preservation device for facilitating the precise selection of frozen embryos according to claim 1, wherein A liquid nitrogen box is fixedly arranged below the liquid nitrogen tank and communicated with the liquid nitrogen tank. A switch is arranged between the liquid nitrogen box and the liquid nitrogen tank. The communication or closing between the liquid nitrogen box and the liquid nitrogen tank is controlled by the opening and closing of the switch.

7. The preservation device for facilitating the precise selection of frozen embryos according to claim 1, wherein A temperature control device is arranged in the liquid nitrogen tank to monitor the temperature in the liquid nitrogen tank and control the opening and closing of the switch through the temperature control device.

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