Umbilical cord blood cryopreservation rack

Abstract

The utility model provides a cord blood cryopreservation rack, which relates to the technical field of medical instruments and comprises a rack body composed of a plurality of vertically arranged fixing frames and a handle arranged at the upper end of the rack body, a vertical opening is formed in one side of the rack body, and a limiting mechanism is arranged on the side, provided with the opening, of the rack body. The limiting mechanism comprises a through hole penetrating through the upper and lower end faces of the frame body and a limiting rod installed in the through hole, a limiting block is arranged at the upper end of the limiting rod, the length of the limiting rod is larger than or equal to the height of the frame body in the vertical direction, and the transverse size of the limiting block is larger than the diameter of the through hole. The limiting mechanism for preventing the cryopreservation box from sliding off is simple in structure, stable, reliable and low in manufacturing cost, and the cryopreservation box in the cryopreservation frame can be limited through the limiting rod arranged on the opening side.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an umbilical cord blood freezing rack. Background Art

[0002] The traditional cord blood sample cryopreservation rack consists of a series of fixed frames, each of which has an independent cord blood cryopreservation box inserted into it. In the existing design, the fixation of the cryopreservation box depends on the spring sheet device inside the frame. However, due to the differences in the production and manufacturing precision of the spring sheets and the inconsistency of the process of welding them to the cryopreservation rack, the elastic retention force of each spring sheet is inconsistent. In addition, considering the slight difference in the size of the cryopreservation box, this also exacerbates the instability of the spring sheet fixing the cryopreservation box. When the clamping force of the spring sheet is insufficient, even a slight tilt of the cryopreservation rack may cause the cryopreservation box to disengage from the buckle and slide out and fall; conversely, if the spring sheet is too tight, it will make it difficult to remove the cryopreservation box smoothly.

[0003] What is more serious is that in the actual low-temperature storage process, when the cryostat rack filled with cryoboxes is immersed in liquid nitrogen, the spring sheet often loses its necessary elasticity or completely loses its function due to the effect of thermal expansion and contraction. Therefore, the sample container stored in the cryostat rack is likely to slip out and fall into the liquid nitrogen due to the failure of fixation, which not only significantly increases the difficulty of sample extraction and interferes with the normal operation process, but also may cause the operator to suffer from the risk of frostbite due to contact with liquid nitrogen. In particular, when a large number of cryostat boxes slip, it is almost impossible to accurately re-place all samples in the original order in the extremely cold liquid nitrogen environment. When operating outside the liquid nitrogen, due to the sudden rise in temperature, the original low-temperature storage conditions of the samples cannot be guaranteed, which seriously affects the quality maintenance of the samples.

[0004] The patent application with the announcement number CN 209121096 U discloses a cord blood cryopreservation rack, including a cord blood cryopreservation rack body; the cord blood cryopreservation rack body is provided with a support rod, the number of the support rods is two, a plurality of fixed frames are provided between the two support rods, the fixed frames are vertically arranged side by side to form the cord blood cryopreservation rack body, the size of the fixed frames matches the size of the cryopreservation box, a fixed limit device is provided in the fixed frame, the support rod is provided with an opening, a U-shaped groove is provided at the opening, the U-shaped groove is provided with a fixed connection point at the top of the support rod, and the U-shaped groove is provided with a switch lock at the bottom of the support rod. The problem of the cryopreservation box slipping out and being stuck and difficult to be taken out is solved, which is not only conducive to convenient operation, but also conducive to personal safety of low-temperature sampling.

[0005] However, the U-shaped groove in the patent, as well as the fixed connection point of the U-shaped groove at the top of the support rod and the switch lock buckle of the U-shaped groove at the bottom of the support rod, are easily deformed under the extremely low temperature of the liquid nitrogen tank, resulting in the U-shaped groove and the opening of the support rod not fitting together, the fixed connection point rotation failure, the switch lock buckle stuck or loose, and other problems, so that the U-shaped groove cannot normally block the opening. In addition, the opening and closing structure design of the switch lock buckle is not convenient for workers wearing protective gloves to operate efficiently and safely. Utility Model Content

[0006] The utility model aims to provide an umbilical cord blood freezing rack, wherein the structure of the anti-freezing box sliding down is resistant to low temperature, has a simple and reliable structure, and is easy to operate.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A cord blood freezing rack comprises a frame body composed of a plurality of vertically arranged fixed frames, a handle arranged at the upper end of the frame body, a vertical opening is opened on one side of the frame body, a limiting mechanism is arranged on the side of the opening on the frame body, the limiting mechanism comprises a through hole penetrating the upper and lower end surfaces of the frame body and a limiting rod installed in the through hole, a limiting block is arranged at the upper end of the limiting rod, the length of the limiting rod is greater than or equal to the height of the frame body in the vertical direction, and the lateral dimension of the limiting block is greater than the diameter of the through hole.

[0009] Furthermore, the diameter of the limiting rod is one third to one half of the diameter of the through hole, so that sufficient deformation margin is reserved for the limiting rod and the through hole, ensuring that the limiting rod can be easily inserted into the through hole even at extreme temperatures.

[0010] Furthermore: the limiting block is a ring handle fixed on the upper end of the limiting rod.

[0011] Furthermore, the limit block is a fixed hook fixed on the upper end of the limit rod and a hook hole opened on the upper end surface of the frame, and the hook tip of the fixed hook is inserted downward into the hook hole. When the limit rod is inserted into the through hole, the hook tip of the fixed hook is inserted into the hook hole, so that the limit rod is installed more firmly.

[0012] Furthermore: the limit block is a transverse rod fixed on the upper end of the limit rod.

[0013] Furthermore: the limit rod is made of stainless steel. Stainless steel has excellent corrosion resistance, high strength and low thermal expansion coefficient, and performs well in low temperature environments.

[0014] Furthermore, a spring sheet is provided on the inner wall of the fixed frame, and the spring sheet can be opened or closed. When the spring sheet is opened, the freezing box can be clamped in the fixed frame.

[0015] Furthermore: a buffer pad is provided on the inner wall of the fixed frame.

[0016] Compared with the original technology, the utility model has the following beneficial effects:

[0017] 1. The limiting mechanism for preventing the freezing box from sliding off in the utility model has a simple structure, is stable and reliable, and the limiting of the freezing box in the freezing rack can be achieved through a limiting rod arranged on the opening side.

[0018] Second, the limiting mechanism of the utility model does not have any parts that require precise coordination to operate. Even if the limiting rod and the freezing rack in the limiting mechanism are deformed to a certain extent in an extremely low temperature environment, the limiting rod can be correctly installed into the through hole to achieve the effect of limiting the freezing box.

[0019] Third, the operation of the limit rod in the utility model only requires inserting and pulling the limit rod into the through hole, which is convenient, efficient and safe for workers wearing protective gloves to operate.

[0020] Fourth, the manufacturing cost of the limiting mechanism in the utility model is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front view of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the view in the direction of A;

[0023] Figure 3 It is a schematic top view of the utility model;

[0024] In the figure:

[0025] 1. Freezing rack; 1.1. Through hole; 1.2. Hook hole; 2. Fixed frame; 3. Opening; 4. Handle; 5. Limit rod; 5.1. Fixed hook; 6. Spring sheet. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1:

[0029] like Figure 1 As shown, a cord blood cryopreservation rack includes a frame body composed of a plurality of fixed frames 2 arranged vertically, a handle 4 arranged at the upper end of the frame body, a vertical opening 3 is opened on one side of the frame body, and a limiting mechanism is provided on the side of the frame body with the opening 3, the limiting mechanism includes a through hole 1.1 penetrating the upper and lower end faces of the frame body and a limiting rod 5 installed in the through hole 1.1, a limiting block is provided at the upper end of the limiting rod 5, the length of the limiting rod 5 is greater than or equal to the height of the frame body in the vertical direction, and the lateral dimension of the limiting block is greater than the diameter of the through hole 1.1. It should be particularly noted that the through hole 1.1 is not only opened on the upper end face of the topmost fixed frame 2, but also passes through the upper and lower surfaces of all fixed frames 2.

[0030] The diameter of the limiting rod 5 is one third to one half of the diameter of the through hole 1.1, and sufficient deformation margin is reserved for the limiting rod 5 and the through hole 1.1, so as to ensure that the limiting rod 5 can be conveniently inserted into the through hole 1.1 even at extreme temperatures.

[0031] The limit block is a fixed hook 5.1 fixed on the upper end of the limit rod 5 and a hook hole 1.2 opened on the upper end surface of the frame, and the hook tip of the fixed hook 5.1 is inserted downward into the hook hole 1.2. The limit rod 5 is made of stainless steel. Stainless steel has excellent corrosion resistance, high strength and low thermal expansion coefficient, and performs well in low temperature environments. The inner wall of the fixed frame 2 is provided with a spring sheet 6, and the spring sheet 6 can be opened or closed. When the spring sheet 6 is open, the cryo box can be stuck in the fixed frame 2. The inner wall of the fixed frame 2 is provided with a buffer pad.

[0032] The working principle of the utility model is as follows:

[0033] When the freezing box needs to be put into or taken out of the freezing rack 1, the fixing hook 5.1 at the upper end of the limiting rod 5 is lifted by hand, and the limiting rod 5 is pulled upward from the through hole 1.1, and the freezing box can be put into or taken out from the opening 3 of the freezing rack 1. This is convenient, efficient and safe for workers wearing protective gloves to operate.

[0034] When the freezing rack 1 with the frozen boxes placed in it needs to be placed into the liquid nitrogen tank, the limiting rod 5 needs to be installed into the through hole 1.1 to limit the freezing box in the fixed frame 2 to prevent the freezing box from slipping out due to the tilt of the freezing rack 1 during the placement into the liquid nitrogen tank. The specific operation is also simple. You only need to carry the fixing hook 5.1 at the upper end of the limiting rod 5 and insert the limiting rod 5 downward into the through hole 1.1 until it passes through the entire freezing rack 1, so that the staff wearing protective gloves can operate conveniently, efficiently and safely. After the limiting rod 5 is inserted into the through hole 1.1, the hook tip of the fixing hook 5.1 is inserted into the hook hole 1.2 to make the limiting rod 5 more firmly installed.

[0035] When taking out the freezing rack 1 from the liquid nitrogen tank, the freezing rack 1 can be directly taken out through the handle 4 above the freezing rack 1. During this process, the limiting rod 5 limits the freezing box to prevent it from sliding out of the opening 3.

[0036] The limiting mechanism for preventing the freezing box from sliding off in the utility model has a simple structure, is stable and reliable, and has a low manufacturing cost. The freezing box in the freezing rack 1 can be limited by a limiting rod 5 arranged on the side of the opening 3.

[0037] The limiting mechanism of the utility model does not have any parts that require precise coordination to operate. Even if the limiting rod 5 and the freezing rack 1 in the limiting mechanism are deformed to a certain extent in an extremely low temperature environment, the limiting rod 5 can be correctly installed into the through hole 1.1 on the freezing rack 1, thereby achieving the effect of limiting the freezing box.

[0038] Embodiment 2:

[0039] The difference between this embodiment and embodiment 1 is that the limit block is an annular handle fixed on the upper end of the limit rod 5, which limits the installation position of the limit rod 5 and facilitates the insertion and removal of the limit rod 5 from the through hole 1.1. The rest of the aspects are the same and will not be described in detail.

[0040] Embodiment 3:

[0041] The difference between this embodiment and the first embodiment is that the limit block is a transverse rod fixed to the upper end of the limit rod 5, and the transverse rod is used to limit the installation position of the rod 5. The other aspects are the same and will not be described in detail.

[0042] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A cord blood cryopreservation rack, comprising a frame body composed of a plurality of vertically arranged fixed frames, a handle arranged at the upper end of the frame body, and a vertical opening on one side of the frame body. Features: A limiting mechanism is provided on one side of an opening on the frame, and the limiting mechanism includes a through hole penetrating the upper and lower end surfaces of the frame and a limiting rod installed in the through hole. A limiting block is provided on the upper end of the limiting rod. The length of the limiting rod is greater than or equal to the height of the frame in the vertical direction, and the lateral dimension of the limiting block is greater than the diameter of the through hole.

2. The cord blood cryopreservation rack according to claim 1, Features: The diameter of the limiting rod is one third to one half of the diameter of the through hole.

3. The cord blood cryopreservation rack according to claim 1, Features: The limiting block is a ring handle fixed on the upper end of the limiting rod.

4. The cord blood cryopreservation rack according to claim 1, Features: The limiting block comprises a fixing hook fixed on the upper end of the limiting rod and a hook hole opened on the upper end surface of the frame body, and the hook tip of the fixing hook is inserted downward into the hook hole.

5. The cord blood cryopreservation rack according to claim 1, Features: The limit block is a transverse rod fixed on the upper end of the limit rod.

6. The cord blood cryopreservation rack according to claim 1, Features: The limit rod is made of stainless steel.

7. The cord blood cryopreservation rack according to claim 1, Features: A spring sheet is arranged on the inner wall of the fixed frame, and the spring sheet can be opened or closed. When the spring sheet is opened, the freezing box can be clamped in the fixed frame.

8. The cord blood cryopreservation rack according to claim 1, Features: A buffer pad is arranged on the inner wall of the fixing frame.

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