Sampling dropping pipette

Abstract

The utility model provides a sampling dropping pipette, which relates to the technical field of biological sampling and comprises a bottle body, a bottle cap and a swab, the bottle cap is matched with an opening of the bottle body, the swab is mounted in the bottle cap, a dropping port is arranged on the bottle cap, a plug is arranged on the dropping port, a swab squeezer is arranged in the bottle body, a friction bulge is mounted at the bottom of the bottle body, and the swab squeezer is connected with the swab. The bottle cap is provided with a friction protrusion, the bottle body is filled with liquid, the friction protrusion is located below the liquid level horizontal line of the liquid, the swab comprises a swab rod and a swab head, the swab rod is connected with the bottle cap, and the swab head is soaked in the liquid. The utility model has the beneficial effect that the sample collected by the swab can be fully extruded into liquid.

Description

Technical Field

[0001] This utility model provides a sampling drip tube, which relates to the field of biological sampling device technology. Background Technology

[0002] Environmental hygiene testing requires sampling from object or human surfaces using swabs. Most commercially available sampling droppers contain a pre-existing eluent, along with a separate sterile sampling swab. The process involves first sampling with the swab, then eluting the sample in the tube containing the eluent, followed by dilution and pouring the diluted solution or eluent for incubation and counting. The swab and eluent are packaged separately, making the process inconvenient. Existing patents have improved this by directly loading the eluent into the sampling dropper. Patent (CN 212234507 U) provides a throat swab tube with pre-existing sampling solution, eliminating the need to manually dip the swab in the solution. However, because the swab tip is immersed in the sampling solution, it can become contaminated, causing dripping of the sample solution outside the tube when the swab is removed. Utility Model Content

[0003] This invention provides a sampling drop tube, which solves the technical problem in the prior art where the sampling fluid drips out of the bottle when the throat swab is soaked in the sampling fluid. At the same time, the sampling tube can also be used as a drop tube, reducing the cumbersome operation of the liquid transfer process.

[0004] This utility model is implemented as follows: it includes a bottle body, a bottle cap, and a swab. The bottle body has an upper opening at the top and is closed at the bottom. The bottle cap is detachably connected to the bottle body, and the diameter of the bottle cap is adapted to the diameter of the upper opening. The swab is installed inside the bottle cap and extends towards the lower end of the bottle body. The lower part of the bottle body contains liquid. The swab includes a swab rod and a swab head connected to each other. The swab head is immersed in the liquid. A swab head squeezing part is installed inside the bottle body, and the swab head squeezing part is located above the liquid.

[0005] As a further preferred embodiment, the swab head squeezing part is an elastic component, including a squeezing through hole and a side seam. The squeezing through hole is located at the center of the swab head squeezing part and is adapted to the swab head. A side seam is provided on each of the corresponding two sides of the squeezing through hole.

[0006] As a further preferred embodiment, the width of the seam gradually narrows along the direction away from the extrusion through-hole.

[0007] As a further preferred embodiment, the swab head squeezing part is installed in the upper middle part of the bottle body.

[0008] As a further preferred embodiment, several friction protrusions are installed on the inner surface of the bottom of the bottle body, the friction protrusions are in contact with the outer surface of the swab head, and all the friction protrusions are located within the liquid.

[0009] As a further preferred option, the swab head is flat.

[0010] As a further preferred embodiment, the two flat surfaces of the swab head are made of cotton, and the sides of the swab head are fitted with flocking or bristles.

[0011] As a further preferred embodiment, the bottle cap is provided with a drip nozzle, and the drip nozzle is provided with a plug.

[0012] As a further preferred embodiment, the bottle body is cylindrical in shape, with opposite sides recessed inward to form a hand-held surface.

[0013] As a further preferred option, the bottle body is provided with scale lines.

[0014] The working principle of this invention is as follows: Before sampling, rotate and remove the bottle cap. During this process, the swab head passes through the swab head squeezing section from bottom to top, squeezing out excess eluent. Use the swab installed inside the bottle cap to collect the sample. After sampling, place the bottle cap back on the top opening and slightly rotate the cap so that the swab head contacts the friction protrusions at the bottom of the bottle, washing out any remaining biological sample into the eluent. Then lift the bottle cap again, allowing the swab head to pass through the through-hole of the swab head squeezing section from bottom to top, and then from top to bottom, passing through the edge of the swab head squeezing section as much as possible to fully squeeze out excess liquid. Replace the cap, allowing the swab head to contact the friction protrusions again. Repeat this process several times to fully wash out the biological sample from the swab head. Tighten the bottle cap and shake the bottle up and down to allow any remaining biological sample from the swab head squeezing section to fall into the eluent. Lift the plug to squeeze out the eluent containing the biological sample from the dropper.

[0015] The beneficial effects of this invention are as follows: a swab head squeezing part is provided above the eluent. The swab head squeezing part includes a squeezing through-hole and a side slit. The side slit allows the squeezing through-hole to squeeze the swab head, preventing excess eluent from dripping outside the sampling drop tube. After sampling, when placing the swab back into the sampling drop tube, the swab head can be squeezed with the swab head squeezer to fully squeeze out the liquid adhering to the swab head. Then, some eluent is dipped in the swab head, and the squeezing is repeated several times. The sampling drop tube is then inverted to ensure that the squeezed-out eluent or biological sample is fully washed into the eluent in the sampling bottle. The bottom of the sampling drop tube has friction protrusions. After the swab head is inserted, it can be completely surrounded by the friction protrusions. Rotating the swab head will wash out any remaining microorganisms. The swab head is flat, with cotton on both sides and flocked or nylon bristles on the sides and edges. During sampling, the flocked or nylon brush on the side first brushes up the microorganisms on the surface, while the flat cotton part fully absorbs them, which can improve the efficiency of sample collection. The mixed sample solution can be directly added to the culture dish through the dropper, eliminating the need for a separate pipette and reducing cumbersome operations during the pipetting process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A partial schematic diagram of the bottle structure;

[0019] Figure 3 yes Figure 1 A schematic diagram of the swab head squeezing section structure;

[0020] Figure 4 yes Figure 1 A schematic diagram of the cross-section of the friction protrusion;

[0021] Figure 5 yes Figure 1 A schematic diagram of the swab structure.

[0022] Labels in the diagram: 1-Bottle cap; 101-Top cap; 102-Cap body; 2-Bottle body; 3-Swab; 301-Swab handle; 302-Swab head; 303-Flat surface; 304-Side; 4-Drip nozzle; 5-Plug; 6-Squeeze part of swab head; 601-Squeeze through hole; 602-Side seam; 7-Friction protrusion; 8-Graduation line; 9-Handheld surface; 10-Eluent. Detailed Implementation

[0023] 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.

[0024] The sampling dropper includes a bottle body, a cap, and a swab. The bottle body and cap are typically made of plastic. The bottle body has an opening at the top and is closed at the bottom. The cap is detachably connected to the bottle body, and the connection method can be a threaded fit, a snap-fit ​​fit, or other known detachable connection methods. The diameter of the cap is adapted to the diameter of the opening. The swab is installed inside the cap, extending towards the lower end of the bottle body. When the cap is fastened to the bottle body, the swab is located inside the bottle body. The lower part of the bottle body contains liquid, which can be an eluent, a sampling solution, etc.

[0025] The swab includes a swab rod and a swab head connected to each other. The connection between the swab rod and the swab head uses an existing connection method. The bottom of the swab rod is connected to the inside of the bottle cap using a known connection method. A retainer can be provided inside the bottle cap, and the bottom of the swab rod can be inserted into the retainer, or it can be fixedly connected inside the bottle cap. When the bottle cap is fastened to the bottle body, the swab head is immersed in the liquid, allowing it to absorb the liquid for easy sampling. A swab head squeezing part is installed inside the bottle body, positioned above the liquid. The squeezing of the swab head prevents excess eluent from dripping outside the sampling dropper. The swab squeezing part is made of an elastic material. Further, the swab head squeezing part includes a squeezing through-hole and side seams. The squeezing through-hole is located at the center of the swab head squeezing part and is adapted to the swab head, allowing the swab head to pass through. A side seam is provided on each side of the squeezing through-hole. The swab extends downward through the squeezing through-hole.

[0026] Furthermore, the width of the seam gradually narrows along the direction away from the extrusion through-hole.

[0027] The swab head squeezing part needs to squeeze the swab head after it leaves the liquid; therefore, the bottom surface of the swab head squeezing part needs to be above the liquid. Furthermore, the swab head squeezing part is installed in the upper middle part of the bottle body to facilitate multiple squeezing of the swab head.

[0028] Furthermore, several friction protrusions are installed on the inner surface of the bottom of the bottle, and these friction protrusions are fixed to the inner wall of the bottle. All of the friction protrusions are located within the range of the eluent. The friction protrusions can be rod-shaped, or multiple second friction protrusions can be provided on the upper part of the first friction protrusion.

[0029] Furthermore, the swab head is flat. Furthermore, the two flat surfaces of the swab head are made of cotton, and flocking or bristles are installed on the sides of the swab head. Brushing the sampling surface with the sides of the swab head facilitates the adhesion of a larger amount of sample to the flat surfaces.

[0030] Furthermore, the bottle cap is provided with a drip nozzle, and the drip nozzle is provided with a plug. The portion of the bottle cap that does not coincide with the connection position of the swab rod protrudes upward to form the drip nozzle. When the plug is opened, the drip nozzle has both an upper and a lower opening, both of which are in the open state. After sampling is completed, the plug is opened, the sampling drip tube is inverted, and the bottle body is squeezed to increase the liquid flow volume of the swab head squeezing section. That is, by squeezing, the slit area of ​​the slit is increased, which facilitates the flow of the eluent from the bottom to the plug for eluent dilution. Alternatively, the liquid can be directly dripped quantitatively into a culture dish from the drip nozzle on the bottle cap, and culture medium is added for incubation. At this time, the sampling drip tube can be temporarily used as a pipette.

[0031] Furthermore, the bottle body is cylindrical in shape, with opposite sides concave to form a hand-held surface, making it easy for operators to hold the bottle body and squeeze the swab head to wash and mix it thoroughly with hand kneading.

[0032] Furthermore, the bottle body is provided with graduation lines for easy observation of the liquid level and for dispensing a fixed amount of liquid. The volume between each two graduation lines is a fixed amount, such as 1 ml. The graduation lines are located in the upper middle part of the bottle body, so that when the bottle body is inverted and liquid is squeezed out, the volume of the squeezed liquid can be clearly observed. Example

[0033] See Figure 1 , Figure 2 , Figure 3 and Figure 4A sampling dropper includes a bottle body 2, a bottle cap 1, and a swab 3. The bottle cap 1 is a flip-top cap, comprising a top cap 101 and a cap body 102. The top cap 101 extends horizontally outward to form a lug, and the upper surface of the cap body 102 extends upward to form a droplet 4. When liquid is present in the sampling bottle, the bottle is inverted, and the bottle body is squeezed, causing the liquid to flow out from the droplet 4. A plug 5 is provided at the droplet 4, located on the top cap 101. The position of the plug 5 corresponds to the position of the droplet 4. When the top cap 101 is fastened to the cap body 102, the plug 5 blocks the droplet 4, preventing liquid spillage. The bottle body 2 is cylindrical, with opposite sides recessed inward to form a handhold surface 9 for easy handling. Graduation lines 8 are provided on the bottle body 2, with a volume interval of 1 ml between adjacent graduations. The graduation lines 8 are located in the upper middle part of the bottle body 2. The bottle body 2 has an opening at the top and is closed at the bottom. The bottle cap 1 is detachably connected to the bottle body 2, and in this embodiment, a threaded connection is used. The diameter of the bottle cap 1 is adapted to the diameter of the opening. The swab 3 is installed inside the bottle cap 2, inside the cap body 102, and extends towards the lower end of the bottle body 2. The swab 3 includes a swab rod 301 and a swab head 302 connected to each other, using the existing swab rod and swab head connection method. The bottom of the swab rod 301 is connected to the cap body 102. The swab head 302 is flat. The swab head 302 includes a flat surface 303 and a side surface 304. There are two flat surfaces 303, both of which are made of cotton. Nylon bristles are installed on the side surface 304 of the swab head 302. The lower part of the bottle body 2 contains the eluent 10. When the bottle cap 1 is connected to the bottle body 2, the swab head 302 is immersed in the eluent 10. A swab head squeezing part 6 is installed inside the bottle body 2. The swab head squeezing part 6 is an elastic component and is installed in the upper middle part of the bottle body 2. The swab head squeezing part 6 includes a squeezing through hole 601 and a side slit 602. The squeezing through hole 601 is located at the center of the swab head squeezing part 6 and is adapted to the swab head 302. A side slit 602 is provided on each of the corresponding sides of the squeezing through hole 601, and the two side slits 602 extend in the same line. The width of the side slit 602 gradually narrows along the direction away from the squeezing through hole 601.

[0034] See Figure 1 and Figure 4Several friction protrusions 7 are installed on the inner surface of the bottom of the bottle body. These friction protrusions 7 contact the outer surface of the swab head 302, and all friction protrusions 7 are located within the immersion range of the eluent 10. There are several friction protrusions 7, all evenly distributed on the inner wall of the bottle body 2. Multiple friction protrusions 7 are arranged on the same horizontal plane, and the friction protrusions 7 on the same horizontal plane are radially symmetrical or axially symmetrical about the central axis of the bottle body 2. Several layers of these friction protrusions 7 are installed on the bottle body 2.

[0035] The working principle of this invention is as follows: Before sampling, rotate and remove the bottle cap. During this process, the swab head passes through the swab head squeezing section from bottom to top, squeezing out excess eluent. Use the swab installed inside the bottle cap to collect the sample. After sampling, place the bottle cap back on the top opening and slightly rotate the cap so that the swab head contacts the friction protrusions at the bottom of the bottle, washing out any remaining biological sample into the eluent. Then lift the bottle cap again, allowing the swab head to pass through the through-hole of the swab head squeezing section from bottom to top, and then from top to bottom, passing through the edge of the swab head squeezing section as much as possible to fully squeeze out excess liquid. Replace the cap, allowing the swab head to contact the friction protrusions again. Repeat this process several times to fully wash out the biological sample from the swab head. Tighten the bottle cap and shake the bottle up and down to allow any remaining biological sample from the swab head squeezing section to fall into the eluent. Lift the plug to squeeze out the eluent containing the biological sample from the dropper.

[0036] The beneficial effects of this invention are as follows: a swab head squeezing part is provided above the eluent. The swab head squeezing part includes a squeezing through-hole and a side slit. The side slit allows the squeezing through-hole to squeeze the swab head, preventing excess eluent from dripping outside the sampling drop tube. After sampling, when placing the swab back into the sampling drop tube, the swab head can be squeezed with the swab head squeezer to fully squeeze out the liquid adhering to the swab head. Then, some eluent is dipped in the swab head, and the squeezing is repeated several times. The sampling drop tube is then inverted to ensure that the squeezed-out eluent or biological sample is fully washed into the eluent in the sampling bottle. The bottom of the sampling drop tube has friction protrusions. After the swab head is inserted, it can be completely surrounded by the friction protrusions. Rotating the swab head will wash out any remaining microorganisms. The swab head is flat, with cotton on both sides and flocked or nylon bristles on the sides and edges. During sampling, the flocked or nylon brush on the side first brushes up the microorganisms on the surface, while the flat cotton part fully absorbs them, which can improve the efficiency of sample collection. The mixed sample solution can be directly added to the culture dish through the dropper, eliminating the need for a separate pipette and reducing cumbersome operations during the pipetting process.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling dropper, characterized in that, The device includes a bottle body, a bottle cap, and a swab. The bottle body has an opening at the top and is closed at the bottom. The bottle cap is detachably connected to the bottle body, and the diameter of the bottle cap is adapted to the diameter of the opening. The swab is installed inside the bottle cap and extends towards the lower end of the bottle body. The lower part of the bottle body contains liquid. The swab includes a swab rod and a swab head that are connected to each other. The swab head is immersed in the liquid. A swab head squeezing part is installed inside the bottle body and is located above the liquid.

2. The sampling dropper according to claim 1, characterized in that, The swab head squeezing part is an elastic component, including a squeezing through hole and a side seam. The squeezing through hole is located at the center of the swab head squeezing part and is adapted to the swab head. A side seam is provided on each of the corresponding two sides of the squeezing through hole.

3. The sampling dropper according to claim 2, characterized in that, The width of the seam gradually narrows along the direction away from the extrusion through-hole.

4. The sampling dropper according to claim 1, characterized in that, The swab head squeezing part is installed in the upper middle part of the bottle body.

5. The sampling dropper according to claim 1, characterized in that, Several friction protrusions are installed on the inner surface of the bottom of the bottle. The friction protrusions are in contact with the outer surface of the swab head, and all the friction protrusions are located within the liquid.

6. The sampling dropper according to claim 1, characterized in that, The swab head is flat.

7. The sampling dropper according to claim 6, characterized in that, The two flat surfaces of the swab head are made of cotton, and flocking or bristles are installed on the sides of the swab head.

8. The sampling dropper according to claim 1, characterized in that, The bottle cap is provided with a drip nozzle, and the drip nozzle is provided with a plug.

9. The sampling dropper according to claim 1, characterized in that, The bottle body is cylindrical in shape, with opposite sides recessed inward to form a hand-held surface.

10. The sampling dropper according to claim 1, characterized in that, The bottle body is provided with scale lines.

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