EP tube opening and closing tool pen

Abstract

The EP tube opening and closing tool pen comprises a pen tube, the top of the pen tube is provided with an opening, the bottom of the pen tube is provided with a clamping structure, and the clamping structure is arranged to be matched with the top of an EP tube; the pushing rod is arranged to be located in the pen tube and can be located at a first position or a second position, the first position is higher than the second position, and when the pushing rod is located at the second position, the bottom end of the pushing rod extends into the clamping structure; and the pressing unit is arranged to be located in the pen tube and extend out of the opening, and the pressing unit is used for achieving switching of the pushing rod between the first position and the second position. According to the EP tube opening and closing tool pen, force is applied to the tube cover of the EP tube according to the lever principle to open the tube cover, the EP tube opening and closing tool pen has the advantages of being convenient to use, simple, labor-saving and the like, direct contact between a user and the EP tube can be avoided, opening and closing are indirectly achieved, and the EP tube opening and closing tool pen has the advantages of being safe, sanitary and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of experimental apparatus, in particular to an EP tube opening and closing tool pen. BACKGROUND

[0002] EP tubes are often used in biochemical, medical detection and other experiments. The EP tube mainly includes a tube body and a tube cover connected with the opening end of the tube body, and the tube body and the tube cover are connected through an EP tube connecting part. As a consumable for temporarily storing samples, the EP tube needs to be frequently opened and closed. The traditional way to open the EP tube cover is usually that the operator pushes the EP tube cover flange located on the outer periphery of the tube cover with the thumb to open the tube cover. In order to achieve aseptic operation, the user needs to wear sterile gloves.

[0003] During the opening and closing of the EP tube for many times, the following problems are faced: (1) manual operation is laborious, and the operator is prone to fatigue after a period of operation, affecting work efficiency. (2) Frequent operation is easy to break and cause the gloves to be damaged, thereby exposing the operator's hands, on the one hand, the liquid in the EP tube may contact the user's skin and contaminate the sample, on the other hand, the liquid is easy to be contaminated on the skin and may cause harm to the human body. CONTENT OF THE INVENTION

[0004] Therefore, the present application provides an EP tube opening and closing tool pen, which can solve the above-mentioned existing technical problems. The present application provides the following technical solutions.

[0005] An EP tube opening and closing tool pen, comprising: a pen tube, the top of the pen tube having an opening, the bottom of the pen tube having a clamping structure, the clamping structure being arranged to fit the top of the EP tube; a push rod, the push rod being arranged inside the pen tube and being capable of being located at a first position or a second position, the first position being higher than the second position, the bottom end of the push rod extending into the clamping structure when the push rod is located at the second position; a pressing unit, the pressing unit being arranged inside the pen tube and extending out of the opening, the pressing unit being used to switch the push rod between the first position and the second position.

[0006] Optionally, further comprising: a spring, the spring being sleeved on the push rod, the spring being used to assist the push rod to move from the second position to the first position.

[0007] Optionally, the clamping structure comprises a top plate, the top plate having a central hole in the center for the bottom end of the push rod to pass through.

[0008] Optionally, the clamping structure is provided with a tongue depressor, the tongue depressor being used to press the EP tube cover flange.

[0009] Optionally, the clamping structure is provided with a cutout groove for accommodating the EP tube connecting part.

[0010] Optionally, the bottom end of the push rod is in the shape of a circular truncated cone.

[0011] Optionally, the pressing unit comprises, from top to bottom, a flat head cap, a pressing head and a rotating drum, wherein the bottom of the pressing head is provided with a first limiting structure, the top of the rotating drum is provided with a second limiting structure, the second limiting structure and the first limiting structure are in shape matching, and the sidewall of the rotating drum is provided with a plurality of guide ribs extending along the axial direction; the upper sidewall of the push rod is provided with a plurality of guide grooves extending along the axial direction, and the guide grooves are in shape matching with the guide ribs.

[0012] Optionally, the pen tube comprises a pen tube upper part and a pen tube lower part, and the pen tube upper part and the pen tube lower part are detachably connected.

[0013] Optionally, the length-diameter ratio of the pen tube is greater than 5.

[0014] Optionally, the push rod is made of hard material.

[0015] The EP tube opening and closing tool pen according to the embodiments of the present application uses the leverage principle to apply force to the cover of the EP tube to open the cover, has the advantages of convenient use, simple operation and labor saving, and can indirectly open / close the EP tube without direct contact between the user and the EP tube, thus having the advantages of safety and hygiene. BRIEF DESCRIPTION OF DRAWINGS

[0016] For the purpose of illustration and not limitation, the present application will now be described according to the preferred embodiments of the present application, with particular reference to the accompanying drawings, in which:

[0017] Figure 1 is a front view of an EP tube opening and closing tool pen according to an example embodiment of the present application;

[0018] Figure 2 is a left view of an EP tube opening and closing tool pen according to an example embodiment of the present application;

[0019] Figure 3 is a top view of an EP tube opening and closing tool pen according to an example embodiment of the present application;

[0020] Figure 4 is a bottom view of an EP tube opening and closing tool pen according to an example embodiment of the present application;

[0021] Figure 5 is a cross-sectional view of an EP tube opening and closing tool pen according to an example embodiment of the present application Figure 1 ;

[0022] Figure 6is a cross-sectional view of an EP tube switch tool pen according to an example embodiment of the present application Figure 2 ;

[0023] Figure 7 is a partial exploded view of an EP tube switch tool pen according to an example embodiment of the present application

[0024] Figure 8 is a schematic view of an EP tube switch tool pen according to an example embodiment of the present application performing a cover opening operation on an EP tube

[0025] Figure 9 is a schematic view of an EP tube switch tool pen according to an example embodiment of the present application performing a cover closing operation on an EP tube

[0026] in the figure:

[0027] 1 - pen tube; 11 - opening; 12 - clamping structure; 121 - top plate; 1211 - central hole; 122 - tongue; 123 - cutout slot; 13 - pen tube upper part; 14 - pen tube lower part; 2 - push rod; 21 - guide slot; 3 - pressing unit; 31 - flat cap; 32 - pressing head; 321 - first limiting structure; 33 - rotating drum; 331 - second limiting structure; 332 - guide edge; 4 - spring. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms such as "mounting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the description of the present application, the end of the EP tube switch tool pen close to the EP tube is defined as the bottom end, and the other end away from the EP tube is defined as the top end. It should be noted that this is only for the convenience of example, not limitation.

[0031] As shown in Figures 1 to 8 , the EP tube switch tool pen according to the embodiment of the present application mainly comprises: a pen tube 1, a push rod 2 and a pressing unit 3.

[0032] The pen tube 1 has an opening 11 at the top and a clamping structure 12 at the bottom, which is designed to fit the top of the EP tube. The push rod 2 is designed to be located inside the pen tube 1 and can be located in a first position (as shown in Figure 5 ) or a second position (as shown in Figure 6 ). The first position is higher than the second position. When the push rod 2 is in the second position, the bottom end of the push rod 2 extends into the clamping structure 12. The pressing unit 3 is partially located inside the pen tube 1 and partially extends out of the opening 11, and is used to switch the push rod 2 between the first position and the second position.

[0033] As shown in Figure 1 and Figure 2 , the pen tube 1 can include a pen tube upper portion 13 and a pen tube lower portion 14. The pen tube upper portion 13 and the pen tube lower portion 14 are preferably detachably connected, so that the internal parts can be flexibly assembled and replaced.

[0034] As shown in Figure 5 , Figure 6 and Figure 7 , the EP tube switch tool pen of the embodiments of the present application can further include a spring 4, which is sleeved on the push rod 2 and is used to assist the push rod 2 to move from the second position to the first position. Specifically, when the push rod 2 moves from the first position to the second position, the spring 4 is compressed and stored; when the spring 4 is released, it can push the push rod to reset from the second position to the first position.

[0035] As shown in Figure 4 , Figure 5 and Figure 6 , in the EP tube switch tool pen of the embodiments of the present application, the clamping structure 12 can include a top plate 121, which has a central hole 1211 in the center for the bottom end of the push rod 2 to pass through; the clamping structure 12 can be provided with a tongue 122 for pressing the EP tube cover flange B; the clamping structure 12 can be provided with a cutout groove 123 for accommodating the EP tube connecting portion A. Through the cooperation of the top plate 121, the tongue 122 and the cutout groove 123, the top of the EP tube (referring to the tube cover and the part near it)

[0036] As shown in Figure 7 , the bottom end of the push rod 2 is preferably in the shape of a circular truncated cone, which has the advantages of large force application area and not easy to slip. The push rod 2 is preferably made of hard material, which has good wear resistance and long service life.

[0037] Those skilled in the art can flexibly design the implementation of the pressing unit 3, for example, the pressing unit 3 can be designed according to the existing technology of the pressing pen. For example, as shown in Figure 7As shown, the pressing unit 3 can include a flat head cap 31, a pressing head 32 and a rotating cylinder 33 connected in sequence from top to bottom. The bottom of the pressing head 32 has a first limiting structure 321, and the top of the rotating cylinder 33 has a second limiting structure 331, which is shape-matched with the first limiting structure 321. For example, the first limiting structure 321 and the second limiting structure 331 can be shape-matched ring teeth. The sidewall of the rotating cylinder 33 has a plurality of guide ribs 332 extending along the axial direction, and the upper sidewall of the pushing rod 2 has a plurality of guide grooves 21 extending along the axial direction, which are shape-matched with the guide ribs 332.

[0038] The EP tube switching tool pen of the embodiments of the present application performs an uncapping operation on the EP tube as shown in Figure 8 As shown, first, the EP tube top is clamped by the clamping structure 12 at the bottom end of the EP tube switching tool pen, specifically, the cutout groove 123 clamps the EP tube connecting part A, and the tongue 122 is pressed against the EP tube cap flange B, and then force is applied at the top of the EP tube switching tool pen (as shown by the arc-shaped arrow), and the EP tube cap is pried open by the lever principle. During the operation, the pushing rod 2 is located at the first position (i.e., at a higher position, retracted inside the pen tube 1 and not extended into the clamping structure 12). In order to more significantly use the lever principle to achieve the purpose of labor-saving operation, the length-diameter ratio of the pen tube 1 can be designed to be greater than 5.

[0039] The EP tube switching tool pen of the embodiments of the present application performs a capping operation on the EP tube as shown in Figure 9 As shown, first, the top of the EP tube with the cap in the virtual covering state is inserted into the clamping structure 12 of the EP tube switching tool pen, and then the pressing unit 3 is pressed downward from the top of the EP tube switching tool pen, so that the pushing rod 2 moves downward to the second position (i.e., at a lower position, extended into the clamping structure 12 from the central hole 1211). The bottom end of the pushing rod 2 presses the central position of the EP tube cap, so that the EP tube cap moves downward to be buckled on the EP tube body, and the EP tube capping is achieved.

[0040] The EP tube switching tool pen of the embodiments of the present application uses the lever principle to apply force to the EP tube cap for uncapping operation, which has the advantages of convenient use, simplicity and labor-saving, and can avoid direct contact between the user and the EP tube, and indirectly achieve the opening

[0041] and closing of the EP tube cap, which has the advantages of safety and hygiene.

[0042] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can occur depending on design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An EP tube switcher pen, characterized by, The utility model relates to a pen tube (1) top has opening (11), bottom has the card joint structure (12), the card joint structure (12) be set to fit EP pipe top, push rod (2) be set to be located inside the pen tube (1), can be located first position or second position, first position is higher than second position, when push rod (2) is located second position, push rod (2) bottom end extends into the card joint structure (12), push unit (3) be set to be located inside the pen tube (1) and from opening (11) stretch out, push unit (3) are used for realizing push rod (2) switching between first position and second position. Further comprising: spring (4) is set on push rod (2), and spring (4) is used for assisting push rod (2) from second position to first position. The card joint structure (12) includes a top plate (121) having a central hole (1211) in the center for the bottom end of the push rod (2) to pass through.

2. The EP tube switcher pen of claim 1, wherein, The card joint structure (12) is provided with a tongue depressor (122) for pressing the EP tube cover flange. The card joint structure (12) is provided with a cutout groove (123) for accommodating the EP tube connecting part.

3. The EP tube switcher pen of claim 1, wherein, The bottom end of the push rod (2) is frustoconical.

4. The EP tube switcher pen of claim 1, wherein, The push unit (3) includes a flat head cap (31), a push head (32), and a rotating drum (33) connected in order from top to bottom, wherein the bottom of the push head (32) has a first limiting structure (321), the top of the rotating drum (33) has a second limiting structure (331), the second limiting structure (331) and the first limiting structure (321) are shape-matched, the side wall of the rotating drum (33) has multiple guide edges (332) extending along the axial direction, and the upper side wall of the push rod (2) has multiple guide grooves (21) extending along the axial direction, which are shape-matched with the guide edges (332).

5. The EP tube switcher pen of claim 1, wherein, The pen tube (1) includes a pen tube upper part and a pen tube lower part, which are detachably connected.

6. The EP tube switcher pen of any one of claims 1 to 5, wherein, The length-diameter ratio of the pen tube (1) is greater than 5.

7. The EP tube switcher pen of any one of claims 1 to 5, wherein, The push rod is made of hard material.

8. The EP tube switcher pen of any one of claims 1 to 5, wherein, ​ 9. The EP tube switcher pen of any one of claims 1 to 5, wherein, ​ 10. The EP tube switcher pen of any one of claims 1 to 5, wherein, ​

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