Anti-dripping improved straw for bacterial colony observation

Abstract

The utility model discloses an anti-dripping improved straw for observing bacterial colonies, and belongs to the field of straws. The anti-dripping improved straw for bacterial colony observation comprises a straw body, an auxiliary feeding hole is formed in the outer surface of the straw body, an extension pipe is arranged at one end of the auxiliary feeding hole, the anti-dripping improved straw further comprises a U-shaped pipe, the U-shaped pipe is arranged at the end, away from the auxiliary feeding hole, of the extension pipe, a conical pipe is arranged at the lower end of the straw body, and the U-shaped pipe is connected with the U-shaped pipe. A main feeding hole is formed in one end of the conical pipe, a blocking ball is arranged in the main feeding hole, and a rectangular groove is formed in the outer surface of the blocking ball. The utility model solves the problem that one end of the existing suction tube is provided with a section of thin tube which is thin in diameter and bent up and down in order to prevent dripping, although the thin tube with the shape can achieve the aim of preventing dripping by reducing the height difference of the liquid level of liquid in the thin tube, the thin tube is exposed outside and is easy to break.

Description

Technical Field

[0001] This utility model relates to the field of straws, specifically an improved straw for anti-drip colony observation. Background Technology

[0002] Bacterial culture is a technique that uses artificial methods to grow and reproduce bacteria. Bacteria are widely distributed in nature, abundant in number and diverse in species; they can benefit humankind or cause disease. Most bacteria can be cultured artificially, that is, inoculated onto a culture medium to allow them to grow and multiply. The cultured bacteria are used for research, identification, and application.

[0003] Chinese Patent Publication No. CN215534421U discloses a drip-proof fingertip blood suction tube, comprising a fingertip capillary segment, a suction segment, and a pressure bladder. The fingertip capillary segment is connected to the pressure bladder via the suction segment. The fingertip capillary segment is curved up and down, and the pressure bladder has small ventilation holes. Compared with the prior art, this drip-proof fingertip blood suction tube reduces the difference in blood level by making the capillary portion curved up and down (even in areas with a small difference in blood level, the tension of the blood on the tube wall can overcome gravity). In this design, regardless of whether the small holes in the pressure bladder are sealed during the transfer process after blood sampling, the blood will not drip, making it safe and reliable.

[0004] To prevent dripping, one end of the straw in the aforementioned patent has a thin tube with a relatively small diameter that bends back and forth. Although this type of thin tube can prevent dripping by reducing the difference in liquid level inside the tube, this thin tube is easily broken when exposed. Utility Model Content

[0005] The purpose of this invention is to provide an improved anti-drip pipette for colony observation. This is achieved by having an auxiliary feed hole on the outer surface of the pipette, with an extension tube at one end extending from the auxiliary feed hole to the inner wall of the pipette. A U-shaped tube is located at the end of the extension tube furthest from the auxiliary feed hole, and an auxiliary discharge hole is located at the end of the U-shaped tube furthest from the extension tube. A tapered tube is located at the lower end of the pipette, with a main feed hole at the lower end. A blocking ball is located on the inner wall of the tapered tube at a position corresponding to the main feed hole. The pipette and the tapered tube... When inserted into the liquid, the liquid submerges the main feed port and the auxiliary feed port. The blocking ball contacts the bottom of the container holding the liquid and is pushed into the conical tube by the bottom of the container. The main feed port opens. When the main feed port finishes sucking up the liquid, the suction tube leaves the container and the blocking ball falls back down to block the main feed port to prevent liquid from dripping from the main feed port. When it is necessary to squeeze the liquid out of the suction tube, the U-shaped tube set at one end of the auxiliary feed port can reduce the liquid level difference and also play a role in preventing dripping, thus solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an improved anti-drip colony observation pipette, comprising a pipette, an auxiliary feed hole on the outer surface of the pipette, an extension tube at one end of the auxiliary feed hole, and a U-shaped tube, the U-shaped tube being disposed at the end of the extension tube away from the auxiliary feed hole, a tapered tube at the lower end of the pipette, a main feed hole at one end of the tapered tube, a blocking ball disposed inside the main feed hole, and a rectangular groove disposed on the outer surface of the blocking ball.

[0007] Preferably, the straw has a connecting block at its upper end away from the conical tube, and the connecting block is threadedly connected to the straw.

[0008] Preferably, the connecting block is provided with a pressure airbag.

[0009] Preferably, a handle is provided on the outer surface of the connecting block, and the handle is integrally formed with the connecting block.

[0010] Preferably, the grip has a through hole, and the through hole is integrally formed with the grip.

[0011] Preferably, the U-shaped tube has an auxiliary discharge hole at the end away from the extension tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention features an auxiliary feeding hole on the outer surface of a straw, with an extension tube extending from the auxiliary feeding hole to the inner wall of the straw. A U-shaped tube is attached to the end of the extension tube away from the auxiliary feeding hole, and an auxiliary discharging hole is located at the end of the U-shaped tube away from the extension tube. A tapered tube is located at the lower end of the straw, with a main feeding hole at its lower end. A blocking ball is positioned on the inner wall of the tapered tube corresponding to the main feeding hole. When the straw and tapered tube are inserted into the liquid, the liquid submerges the main feeding hole and the auxiliary feeding hole. The blocking ball contacts the bottom of the container holding the liquid and is pushed into the tapered tube by the bottom of the container. When the main feed port is open, the suction tube leaves the container and the blocking ball falls back down to block the main feed port, preventing liquid from dripping from the main feed port. When it is necessary to squeeze the liquid out of the suction tube, the U-shaped tube at one end of the auxiliary feed port can reduce the liquid level difference and also prevent dripping. This effectively avoids the problem of the existing suction tube having a thinner diameter tube that bends up and down to prevent dripping. Although this type of thin tube can prevent dripping by reducing the liquid level difference in the thin tube, it is easy to break when the thin tube is exposed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the straw of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall right-side structure of this utility model;

[0017] Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0018] In the diagram: 1. Straw; 2. Connecting block; 3. Pressing airbag; 4. Handle; 5. Through hole; 6. Conical tube; 7. Main feed hole; 8. Blocking ball; 9. Rectangular groove; 10. Auxiliary feed hole; 11. Extension tube; 12. U-shaped tube; 13. Auxiliary discharge hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To address the problem in existing technologies where a thin, curved tube is used at one end of the straw to prevent dripping, although this shape can prevent dripping by reducing the difference in liquid level within the tube, the exposed thin tube is prone to breakage. This embodiment provides the following technical solution:

[0021] An improved anti-drip colony observation pipette includes a pipette 1, an auxiliary feed hole 10 on the outer surface of the pipette 1, an extension tube 11 at one end of the auxiliary feed hole 10, and a U-shaped tube 12. The U-shaped tube 12 is located at the end of the extension tube 11 away from the auxiliary feed hole 10. A tapered tube 6 is located at the lower end of the pipette 1. A main feed hole 7 is located at one end of the tapered tube 6. A blocking ball 8 is located inside the main feed hole 7. A rectangular groove 9 is located on the outer surface of the blocking ball 8. A connecting block 2 is located at the upper end of the pipette 1 away from the tapered tube 6. The connecting block 2 is threadedly connected to the pipette 1. A pressing airbag 3 is located on the connecting block 2. A handle 4 is located on the outer surface of the connecting block 2. The handle 4 is integrally formed with the connecting block 2. A through hole 5 is located on the handle 4. An auxiliary discharge hole 13 is located at the end of the U-shaped tube 12 away from the extension tube 11.

[0022] In this embodiment, please refer to Figures 1-4An auxiliary feeding hole 10 is provided on the outer surface of the straw 1. An extension tube 11 is provided at one end of the auxiliary feeding hole 10 extending to the inner wall of the straw 1. A U-shaped tube 12 is provided at the end of the extension tube 11 away from the auxiliary feeding hole 10. An auxiliary discharge hole 13 is provided at the end of the U-shaped tube 12 away from the extension tube 11. A tapered tube 6 is provided at the lower end of the straw 1. A main feeding hole 7 is provided at the lower end of the tapered tube 6. A blocking ball 8 is provided on the inner wall of the tapered tube 6 at a position corresponding to the main feeding hole 7. The straw 1 and the tapered tube 6 are inserted into... When the liquid is submerged, the main feed hole 7 and the auxiliary feed hole 10 are immersed in the liquid. The blocking ball 8 contacts the bottom of the container holding the liquid and is pushed into the conical tube 6 by the bottom of the container. The main feed hole 7 is opened. When the main feed hole 7 has finished sucking the material, the suction tube 1 leaves the container and the blocking ball 8 falls back down to block the main feed hole 7 to prevent the liquid from dripping from the main feed hole 7. When it is necessary to squeeze the liquid in the suction tube 10, the U-shaped tube 12 set at one end of the auxiliary feed hole 10 can reduce the liquid level difference and also play a role in preventing dripping.

[0023] Working principle: The straw 1 and the conical tube 6 are inserted into the liquid, and the liquid submerges the main feed hole 7 and the auxiliary feed hole 10. The blocking ball 8 contacts the bottom of the container holding the liquid. The blocking ball 8 is pushed into the conical tube 6 by the bottom of the container, and the main feed hole 7 is opened. When the main feed hole 7 has finished sucking up the liquid, the straw 1 leaves the container and the blocking ball 8 falls back down to block the main feed hole 7 to prevent the liquid from dripping out of the main feed hole 7. When it is necessary to squeeze the liquid out of the straw 1, the U-shaped tube 12 set at one end of the auxiliary feed hole 10 can reduce the liquid level difference and also play a role in preventing dripping.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drip-proof improved pipette for colony observation, comprising a pipette (1), wherein an auxiliary feeding hole (10) is provided on the outer surface of the pipette (1), and an extension tube (11) is provided at one end of the auxiliary feeding hole (10); Its features are: It also includes a U-shaped tube (12), which is set on the end of the extension tube (11) away from the auxiliary feed hole (10). A tapered tube (6) is set at the lower end of the suction tube (1). A main feed hole (7) is opened on one end of the tapered tube (6). A blocking ball (8) is set inside the main feed hole (7). A rectangular groove (9) is set on the outer surface of the blocking ball (8).

2. The improved anti-drip pipette for colony observation according to claim 1, characterized in that: The straw (1) has a connecting block (2) at its upper end away from the tapered tube (6), and the connecting block (2) is threadedly connected to the straw (1).

3. The improved anti-drip pipette for colony observation according to claim 2, characterized in that: The connecting block (2) is provided with a pressing airbag (3).

4. The improved anti-drip pipette for colony observation according to claim 3, characterized in that: A handle (4) is provided on the outer surface of the connecting block (2), and the handle (4) is integrally formed with the connecting block (2).

5. The improved anti-drip pipette for colony observation according to claim 4, characterized in that: The grip (4) has a through hole (5), and the through hole (5) and the grip (4) are integrally formed.

6. The improved anti-drip pipette for colony observation according to claim 1, characterized in that: The U-shaped tube (12) has an auxiliary discharge hole (13) at the end away from the extension tube (11).

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