Freezing tube extraction pliers

Abstract

The utility model provides a cryopreservation tube extracting clamp which comprises a first clamp handle and a second clamp handle which are mutually hinged and further comprises a first clamping block, the first clamping block is a semicircular cylinder and arranged at the end of the first clamp handle, and the first clamping block comprises a cambered surface portion and a plane portion. The cambered surface part is located on the side, away from the second clamp handle, of the first clamping block, and the plane part is located on the side, close to the second clamp handle, of the first clamping block. When the box cover of the cryopreservation box needs to be opened in an assisting mode, the first clamping block can be inserted into the liquid drainage hole of the box cover of the cryopreservation box, then the lower ends of the first clamp handle and the second clamp handle are adjusted to rotate outwards, at the moment, the outer clamping groove is inserted into the cover wall of the cryopreservation box, and finally the extraction clamp is pulled upwards, so that the box cover of the cryopreservation box can be taken down from the cryopreservation box. And meanwhile, freezing injury caused by direct contact between the hand and the cryopreservation box cover in the process of opening the cryopreservation box cover is avoided, and the cryopreservation box is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of cell culture cryopreservation, in particular to a pair of cryopreservation tube extraction forceps. Background Art

[0002] During the cell culture process, it is often necessary to place the cultured cells into cryopreservation tubes for ultra-low temperature cryopreservation and ultra-low temperature storage, which also includes the operation of taking out the cryopreservation tubes from the biological sample bank.

[0003] In general, the cryopreservation process involves a programmed cooling process, from 20°C to 40°C and then to 80°C, and finally transferred to a liquid nitrogen environment for long-term storage. During the entire process, the transfer of cryotubes is very frequent, and the time requirements for transferring and removing cryotubes are very strict. The shorter the time, the lower the risk of specimen freeze-thaw. When it is necessary to transfer or remove cryotubes, it is necessary to take out the cryobox in the biological sample library as a whole, and then take them out one by one or individually from the densely placed cryotubes. Currently, the commonly used method of taking a single cryotube is to extract it with tweezers or forceps.

[0004] The utility model with the publication number CN208645116U proposes a cryotube extraction forceps, which has a pair of forceps handles and a pair of clamping blocks. The pair of forceps handles are rotatably connected by a handle pin, and the front ends of the forceps handles are in the shape of straight bars. The pair of clamping blocks are respectively fixedly arranged at the front ends of the two forceps handles for clamping cryotubes. Grooves matching the shape of the cryotubes are formed on the inner walls of the clamping blocks. The two grooves are symmetrically arranged and the length direction of the grooves is toward the front ends of the forceps handles. However, in the process of removing the cryotubes, there is a process of removing the cryobox from the biological sample library. Since the storage environment in the biological sample library is liquid nitrogen storage, and the existing extraction forceps are not convenient for removing the cryobox from the biological sample library, there is still a risk of frostbite when removing the cryobox manually while wearing gloves, so a cryotube extraction forceps is proposed to solve the above problem. Utility Model Content

[0005] In view of this, the utility model proposes a cryopreservation tube extraction forceps. When it is necessary to assist the operator to open the cryopreservation box lid in the biological sample library, the first clamping block can be inserted into the drainage hole of the cryopreservation box lid, and then the lower ends of the first clamp handle and the second clamp handle are adjusted to rotate outward. At this time, the outer clamping groove is plugged into the cover wall of the cryopreservation box, and finally the extraction forceps are pulled up to remove the cryopreservation box lid from the cryopreservation box, which is convenient for subsequent sampling of the cryopreservation tubes in the cryopreservation box. By providing the extraction forceps, the operator can be assisted in opening the cryopreservation box lid, so that the cryopreservation box lid can be opened without touching the cryopreservation box, avoiding frostbite caused by direct contact between the hands and the cryopreservation box lid during the process of opening the cryopreservation box lid, and convenient to use.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a cryotube extraction forceps, comprising a first clamp handle and a second clamp handle hinged to each other, and also comprising a first clamping block, wherein:

[0007] The first clamping block is a semicircular cylinder, which is arranged at the end of the first clamp handle, and the first clamping block includes an arcuate surface and a flat surface. The arcuate surface is located on the side of the first clamping block away from the second clamp handle, and the flat surface is located on the side of the first clamping block close to the second clamp handle. The first clamping block is used to plug into the drainage hole of the cryo box cover, and the arcuate surface is provided with an external clamping groove for plugging into the wall of the cryo box cover.

[0008] On the basis of the above technical solution, preferably, an inner friction groove is provided on the plane portion.

[0009] On the basis of the above technical solution, preferably, it further comprises a second clamping block, wherein:

[0010] The second clamping block is an arc-shaped clamping piece, which is arranged at the end of the second clamp handle, and a friction groove is formed on one side of the second clamping block close to the first clamping block.

[0011] On the basis of the above technical solution, preferably, the end of the second clamping block extends to be aligned with the end of the first clamping block.

[0012] On the basis of the above technical solution, preferably, the curvature of the upper end of the second clamping block is greater than the curvature of the lower end of the second clamping block.

[0013] On the basis of the above technical solution, preferably, the arc angle of the upper end of the second clamping block is 180°, and the arc angle of the lower end of the second clamping block is 90°.

[0014] On the basis of the above technical solution, preferably, it also includes two rubber protective sleeves, wherein:

[0015] The two rubber protective sleeves are respectively sleeved on the upper end circumferences of the first clamp handle and the second clamp handle.

[0016] Based on the above technical solution, preferably, the upper ends of the first pliers handle and the second pliers handle are bent toward the side away from the first pliers handle and the second pliers handle, and extend toward the hinge point of the first pliers handle and the second pliers handle, and the upper ends of the first pliers handle and the second pliers handle are arc-shaped.

[0017] On the basis of the above technical solution, preferably, it also includes a stud, wherein,

[0018] The first clamping block and the first clamp handle are detachably arranged, the stud is arranged at the end of the first clamp handle, and the first clamping block is provided with a first threaded hole threadably connected to the stud.

[0019] On the basis of the above technical solution, preferably, it also includes a matching clamping rod, wherein,

[0020] A second threaded hole is formed at the end of the mating clamp rod, and the second threaded hole is used for threaded connection with the stud.

[0021] The cryopreservation tube extraction forceps of the utility model have the following beneficial effects compared with the prior art:

[0022] (1) When it is necessary to assist the operator in opening the cryopreservation box lid in the biological sample library, the first clamp block can be inserted into the drainage hole of the cryopreservation box lid, and then the lower ends of the first clamp handle and the second clamp handle can be adjusted to rotate outward. At this time, the outer clamp groove is plugged into the cover wall of the cryopreservation box, and finally the extraction clamp is pulled up to remove the cryopreservation box lid from the cryopreservation box, which is convenient for subsequent sampling of the cryopreservation tubes in the cryopreservation box. The extraction clamp can assist the operator in opening the cryopreservation box lid, so that the cryopreservation box lid can be opened without touching the cryopreservation box, avoiding frostbite caused by direct contact between the hands and the cryopreservation box lid during the process of opening the cryopreservation box lid, and is convenient to use.

[0023] (2) Specifically, when sampling from a cryogenic tube, the lower ends of the first clamp handle and the second clamp handle are both extended into the interior of the cryogenic box, and the first clamp block is inserted into the cryogenic tube. The second clamp block is inserted into between the two cryogenic tubes and presses the cryogenic tube from the outside. The lower ends of the first clamp handle and the second clamp handle are adjusted to rotate inward, so that the cryogenic tube is clamped under the friction of the inner friction groove and the friction groove. Finally, the extraction clamp is lifted up to remove the cryogenic tube. The extraction clamp of the present application can both assist in opening the cover of the cryogenic box and clamp the cryogenic tube, thereby increasing the diversity of the use functions of the extraction clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a first stereoscopic view of the cryotube extraction forceps of the utility model;

[0026] Figure 2 This is a second stereoscopic view of the cryotube extraction forceps of the utility model;

[0027] Figure 3 It is a right side view of the cryopreservation tube extraction forceps of the utility model;

[0028] Figure 4 The utility model is a cryopreservation tube extraction forceps Figure 3 A cross-sectional view of the structure at AA is shown;

[0029] Figure 5 The utility model is a cryopreservation tube extraction forceps Figure 4 The enlarged schematic diagram of point B is shown;

[0030] Figure 6 It is a schematic diagram of the cross-sectional state of the cryopreservation tube extraction of the utility model when the matching clamp rod is replaced;

[0031] Figure 7 This is a three-dimensional view of the second clamping block of the cryotube extraction forceps of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figures 1 to 7 As shown, the cryotube extraction forceps of the utility model include a first clamp handle 11 and a second clamp handle 12 hinged to each other, and also include a first clamp block 2, wherein the first clamp block 2 is a semicircular cylinder, which is arranged at the end of the first clamp handle 11, and the first clamp block 2 includes an arc surface portion 21 and a flat surface portion 22, the arc surface portion 21 is located on the side of the first clamp block 2 away from the second clamp handle 12, and the flat surface portion 22 is located on the side of the first clamp block 2 close to the second clamp handle 12, the first clamp block 2 is used to plug into the drainage hole of the cryobox cover, and the arc surface portion 21 is provided with an external clamping groove 211 for plugging into the wall of the cryobox cover.

[0034] It should be noted that the attached Figure 1 The lower part of the first clamp handle 11 and the lower end of the second clamp handle 12 is shown in the figure, and the Figure 1 Above the first clamp handle 11 and the second clamp handle 12 are the upper ends.

[0035] In a specific implementation, when it is necessary to assist the operator to open the lid of the cryopreservation box in the biological sample library with the extraction forceps, the first clamping block 2 can be inserted into the drainage hole of the cryopreservation box lid, and then the first clamp handle 11 and the second clamp handle 12 are rotated to rotate the lower ends of the first clamp handle 11 and the second clamp handle 12 outward. At this time, the first clamping block 2 is provided with an outer clamping groove 211 that can be plugged with the cover wall of the cryopreservation box. Finally, the extraction forceps are pulled up to remove the cryopreservation box lid from the cryopreservation box, which is convenient for subsequent sampling of the cryopreservation tubes in the cryopreservation box. The extraction forceps can assist the operator in opening the cryopreservation box lid, so that the cryopreservation box lid can be opened without touching the cryopreservation box, avoiding frostbite caused by direct contact between the hands and the cryopreservation box lid during the process of opening the cryopreservation box lid, and is convenient to use.

[0036] As a preferred embodiment, an inner friction groove 221 is formed on the plane portion 22 .

[0037] As a preferred embodiment, it further includes a second clamping block 3, wherein the second clamping block 3 is an arc-shaped clamping piece, which is arranged at the end of the second clamp handle 12, and a friction groove is opened on one side of the second clamping block 3 close to the first clamping block 2.

[0038] As a preferred embodiment, the end of the second clamping block 3 extends to be aligned with the end of the first clamping block 2 .

[0039] This design allows the second clamping block 3 to cooperate with the first clamping block 2 to clamp the cryotube. By setting the second clamping block 3 as an arc-shaped clamp, the second clamping block 3 can fit more closely to the outside of the cryotube during clamping to provide stable clamping.

[0040] Specifically, when taking samples from cryogenic tubes, the lower ends of the first clamp handle 11 and the second clamp handle 12 are both extended into the interior of the cryogenic box, and the first clamp block 2 is inserted into the inner side of the cryogenic tube, the second clamp block 3 is inserted between the two cryogenic tubes and presses the cryogenic tube from the outside, the lower ends of the first clamp handle 11 and the second clamp handle 12 are adjusted to rotate inward, so that the cryogenic tube is clamped under the friction action of the inner friction groove 221 and the friction groove, and finally the extraction forceps are lifted to take out the cryogenic tube. The extraction forceps of the present application can both assist in opening the cover of the cryogenic box and clamp the cryogenic tube, which increases the diversity of the use functions of the extraction forceps.

[0041] As a preferred implementation, the curvature of the upper end of the second clamping block 3 is greater than the curvature of the lower end of the second clamping block 3 .

[0042] The arc angle of the upper end of the second clamping block 3 is 180°, and the arc angle of the lower end of the second clamping block 3 is 90°.

[0043] Specifically in actual operation, the sizes of the gaps between two adjacent cryotubes in the height direction are different. As the height decreases, the gap gradually shrinks. In order to enable the second clamping block 3 to clamp the cryotube from the outside, the upper end curvature of the second clamping block 3 is set to 180°, and the lower end curvature of the second clamping block 3 is set to 90°. This design allows the second clamping block 3 to fully extend between the two cryotubes and complete the clamping of the cryotube to increase the clamping stability of the cryotube.

[0044] As a preferred embodiment, two rubber protective sleeves 4 are further included, wherein the two rubber protective sleeves 4 are respectively sleeved on the upper end circumferences of the first clamp handle 11 and the second clamp handle 12 .

[0045] In a specific implementation, the first clamp handle 11 and the second clamp handle 12 are rotated and adjusted by holding the rubber protective cover 4. By providing the rubber protective cover 4, the operator can be effectively prevented from being frostbitten by low temperature.

[0046] As a preferred embodiment, the upper ends of the first pliers handle 11 and the second pliers handle 12 are bent toward the side away from the first pliers handle 11 and the second pliers handle 12, and extend toward the hinge point of the first pliers handle 11 and the second pliers handle 12, and the upper ends of the first pliers handle 11 and the second pliers handle 12 are arc-shaped.

[0047] With this design, the upper ends of the arc-shaped first clamp handle 11 and the second clamp handle 12 can be sleeved on the outside of the operator's hand for easy adjustment.

[0048] As a preferred embodiment, it also includes a stud 5, wherein the first clamping block 2 and the first clamp handle 11 are detachably arranged, and the stud 5 is arranged at the end of the first clamp handle 11, and the first clamping block 2 is provided with a first threaded hole 23 threadedly connected to the stud 5.

[0049] In a specific implementation, the first clamping block 2 can be conveniently disassembled by rotating the first clamping block 2 .

[0050] As a new embodiment, it is basically the same as the above embodiment, except that it also includes a matching clamp rod 6, wherein a second threaded hole 61 is formed at the end of the matching clamp rod 6, and the second threaded hole 61 is used for threaded connection with the stud 5.

[0051] With this design, when it is necessary to change the clamping mode of the extraction pliers of the present application, the first clamping block 2 of the Chuanli can be rotated and the matching clamping rod 6 can be rotated to connect the matching clamping rod 6 with the first clamp handle 11, so that clamping is performed through the matching clamping rod 6, and the matching clamping rod 6 is designed as a conventional extraction pliers pliers head.

[0052] The working principle of the utility model is introduced as follows:

[0053] When assistance is needed to open the lid of the freezing box, the first clamping block 2 is inserted into the drainage hole of the freezing box lid, and then the lower ends of the first clamp handle 11 and the second clamp handle 12 are adjusted to rotate outward. At this time, the first clamping block 2 is provided with an external clamping groove 211 to be inserted into the cover wall of the freezing box, and finally the extraction forceps are pulled up to remove the freezing box lid from the freezing box. Specifically, when sampling the freezing tube, the lower ends of the first clamp handle 11 and the second clamp handle 12 are both extended into the interior of the freezing box, and the first clamp block 2 is inserted into the inner side of the freezing tube cover, the second clamp block 3 is inserted between the two freezing tubes and the freezing tube is pressed from the outside, and the lower ends of the first clamp handle 11 and the second clamp handle 12 are adjusted to rotate inward, thereby completing the clamping process of the freezing tube. Specifically, the rotation adjustment process of the first clamp handle 11 and the second clamp handle 12 is performed by holding the rubber protective sleeve 4.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cryotube extraction forceps, characterized in that: It comprises a first clamp handle (11) and a second clamp handle (12) which are hinged to each other, and a first clamping block (2), wherein: The first clamping block (2) is a semicircular cylinder, which is arranged at the end of the first clamp handle (11), and the first clamping block (2) includes a curved surface (21) and a flat surface (22), wherein the curved surface (21) is located on the side of the first clamping block (2) away from the second clamp handle (12), and the flat surface (22) is located on the side of the first clamping block (2) close to the second clamp handle (12), the first clamping block (2) is used to plug into the drainage hole of the cryo box cover, and the curved surface (21) is provided with an external clamping groove (211) for plugging into the wall of the cryo box cover.

2. The cryotube extraction forceps according to claim 1, characterized in that: An inner friction groove (221) is provided on the plane portion (22).

3. The cryotube extraction forceps according to claim 1, characterized in that: It also includes a second clamping block (3), wherein: The second clamping block (3) is an arc-shaped clamping piece, which is arranged at the end of the second clamp handle (12), and a friction groove is provided on a side of the second clamping block (3) close to the first clamping block (2).

4. The cryotube extraction forceps according to claim 3, characterized in that: The end of the second clamping block (3) extends to be aligned with the end of the first clamping block (2).

5. The cryotube extraction forceps according to claim 4, characterized in that: The curvature of the upper end of the second clamping block (3) is greater than the curvature of the lower end of the second clamping block (3).

6. The cryotube extraction forceps according to claim 5, characterized in that: The arc angle of the upper end of the second clamping block (3) is 180°, and the arc angle of the lower end of the second clamping block (3) is 90°.

7. The cryotube extraction forceps according to claim 1, characterized in that: It also includes two rubber protective sleeves (4), wherein: The two rubber protective sleeves (4) are respectively sleeved on the upper circumference of the first clamp handle (11) and the second clamp handle (12).

8. The cryotube extraction forceps according to claim 6, characterized in that: The upper ends of the first clamp handle (11) and the second clamp handle (12) are bent toward the side where the first clamp handle (11) and the second clamp handle (12) are separated, and extend toward the hinge point of the first clamp handle (11) and the second clamp handle (12), and the upper ends of the first clamp handle (11) and the second clamp handle (12) are arc-shaped.

9. The cryotube extraction forceps according to claim 1, characterized in that: Also included is a stud (5), wherein: The first clamping block (2) and the first clamp handle (11) are detachably arranged, the stud (5) is arranged at the end of the first clamp handle (11), and the first clamping block (2) is provided with a first threaded hole (23) threadedly connected to the stud (5).

10. The cryotube extraction forceps according to claim 9, characterized in that: Also included is a matching clamping rod (6), wherein: A second threaded hole (61) is provided at the end of the matching clamping rod (6), and the second threaded hole (61) is used for threaded connection with the stud (5).

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