Disposable dropper with filtering function

Abstract

The utility model relates to the technical field of droppers, in particular to a disposable dropper with a filtering function, which comprises a hose body with a solution cavity, the bottom of the hose body is provided with a first opening communicated with the solution cavity, the first opening is detachably provided with a filtering dropping head, and the filtering dropping head is provided with a dropping channel penetrating through the upper surface and the lower surface of the filtering dropping head. And a filtering sponge and a filtering membrane are sequentially arranged on the liquid dropping channel along the liquid outlet direction. Compared with the prior art, the filter sponge and the filter membrane are sequentially arranged in the filter channel along the liquid outlet direction; a diluent in the solution cavity can firstly pass through the filtering sponge to filter secretions in a sample, so that the clarity of the diluent inoculated to a drug sensitive culture medium is ensured; in addition, infectious microbes can be filtered through the filter membrane, it is guaranteed that diluent inoculated to the drug sensitive culture medium does not contain impurities and infectious microbes, the test reliability and accuracy of the drug sensitive culture medium are improved, and the situation that doctors are misguided to take drugs and patients are misguided to treat the drugs is eradicated.

Description

Technical Field

[0001] This utility model relates to the field of dropper technology, and in particular to a disposable dropper with a filtering function. Background Technology

[0002] In related technologies, for mycoplasma identification and drug susceptibility testing, directly obtained samples cannot be tested. Before testing, the sample needs to be diluted with a diluent, and then the diluted sample is transferred to the drug susceptibility culture medium via a dropper for testing. However, the inventors found in actual testing that, because mycoplasma growth requires a clear and transparent culture medium, samples with a large amount of secretions may cause a decrease in clarity when inoculated into the drug susceptibility culture medium. Furthermore, contamination by other microorganisms can cause the culture medium to become turbid and red, leading to invalid or erroneous test results, which could mislead doctors in prescribing medication and patients in treating their conditions.

[0003] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology by providing a disposable dropper with a filtering function. This effectively solves the technical defects in the existing mycoplasma identification drug sensitivity test, where excessive secretions or bacterial contamination in the sample lead to invalid or erroneous test results. This improves the reliability and accuracy of the test structure and prevents situations that could mislead doctors in prescribing medication and patients in their treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a disposable dropper with a filtering function, comprising a flexible tube body having a solution chamber, the bottom of the flexible tube body having a first opening that connects to the solution chamber, characterized in that a filter dropper head is detachably installed at the first opening, the filter dropper head having a dropper channel penetrating its upper and lower surfaces, and a filter sponge and a filter membrane being arranged sequentially along the liquid outlet direction in the dropper channel.

[0006] The beneficial effect of the disposable dropper with filtering function provided in this application is that, in the process of mycoplasma identification and drug sensitivity test, the sample is first diluted with diluent, and the diluent containing the sample is injected into the solution chamber; then, the filter dropper head is installed at the first opening and the filter dropper head is facing down, so that the diluent in the solution chamber can be dripped into the drug sensitivity culture medium through the dropper channel to obtain the experimental results.

[0007] Compared with existing technologies, by sequentially placing a filter sponge and a filter membrane in the filtration channel along the liquid outlet direction, the diluent in the solution chamber can first pass through the filter sponge to filter secretions in the sample, thereby ensuring the clarity of the diluent inoculated into the drug sensitivity medium. Moreover, the filter membrane can filter out bacteria, ensuring that the diluent inoculated into the drug sensitivity medium is free of impurities and bacteria, improving the reliability and accuracy of the drug sensitivity medium test, and preventing situations that mislead doctors in medication and patients in treatment.

[0008] As a preferred embodiment, the filter drip head includes a plug portion and a drip portion integrally formed at the bottom of the plug portion. The bottom of the peripheral side of the plug portion is provided with a first mounting groove, and the inner side of the first opening is provided with a first mounting protrusion.

[0009] When the filter drop head is installed in the first opening, the outer surface of the insertion part can abut against the inner wall of the solution chamber, and the first assembly protrusion is inserted into the first assembly groove.

[0010] As a preferred embodiment, a first reinforcing ring is provided at the bottom of the outer surface of the hose body. The first reinforcing ring and the first mounting protrusion are located at the same height and are spaced apart.

[0011] As a preferred embodiment, the insertion part has a hollow filter chamber, and the filter sponge and filter membrane are stacked sequentially from top to bottom and disposed in the filter chamber.

[0012] As a preferred embodiment, the droplet channel includes

[0013] The top liquid outlet channel penetrates the upper surface of the insertion part and connects to the filter chamber; and,

[0014] The bottom liquid outlet channel runs through the lower surface of the drip section and connects to the filter chamber.

[0015] As a preferred option, the diameter of the bottom liquid outlet channel is 0.3 mm.

[0016] As a preferred embodiment, the cross-section of the first opening is circular, the cross-section of the insertion part is circular, the diameter of the insertion part is larger than the diameter of the first opening, and the insertion part and the first opening are interference-fitted together.

[0017] As a preferred embodiment, the cross-section of the dripping part is circular, and the outer surface of the dripping part is gradually inclined from top to bottom towards the center.

[0018] As a preferred embodiment, the filter membrane is any one of polyvinylidene fluoride membrane, mixed cellulose membrane, nylon membrane, or hydrophilic polytetrafluoroethylene membrane, and the filter membrane has a number of filter pores penetrating its upper and lower surfaces, the pore size of which is 0.45 micrometers. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded three-dimensional view of the disposable dropper with filtering function provided in the embodiments of this application;

[0021] Figure 2 yes Figure 1 The first cross-sectional view of a disposable dropper with filtering function is shown.

[0022] Figure 3 yes Figure 2 The first cross-sectional view of the disposable dropper with filtration function, in which the tubing body and the filter dropper head are assembled together;

[0023] Figure 4 yes Figure 3 A magnified view of part A of the disposable dropper with filtering function shown;

[0024] Figure 5 yes Figure 3 The first cross-sectional view of the filter dropper head of the disposable dropper with filtering function is shown.

[0025] The following are the labeling elements in the figure:

[0026] 100. Disposable dropper; 10. Tube body; 11. Solution chamber; 12. First opening; 13. First assembly protrusion ring; 14. First reinforcing ring; 20. Filter dropper head; 201. Insertion part; 202. Dropping part; 203. First assembly groove; 204. Filter chamber; 205. Top liquid outlet channel; 206. Bottom liquid outlet channel; 21. Filter sponge; 22. Filter membrane. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Please refer to the following: Figures 1 to 5 The disposable dropper 100 with filtering function provided in the embodiments of this application will now be described. The disposable dropper 100 with filtering function includes: a flexible tube body 10 and a filter dropper head 20.

[0033] The tubing body 10 has a hollow solution chamber 11 for storing a diluent containing a sample; the bottom of the tubing body 10 is provided with a first opening 12, which can be connected to the solution chamber 11; the filter drop head 20 is detachably installed in the first opening 12, and the filter drop head 20 is provided with a drop channel penetrating its upper and lower surfaces, and the drop channel is provided with a filter sponge 21 and a filter membrane 22 in sequence along the liquid outlet direction.

[0034] Specifically, in the mycoplasma identification and drug sensitivity test, the following steps are taken: First, a sample is provided and diluted with a diluent. Then, a disposable dropper 100 is provided to inject the diluted solution containing the sample into the solution chamber 11, and a filter dropper 20 is installed at the first opening 12. Next, with the filter dropper 20 facing downwards, the diluted solution in the solution chamber 11 is squeezed through the tube body 10, allowing it to pass through the filter sponge and filter membrane 22 before being dripped into the drug sensitivity culture medium through the dropper channel. After the diluted solution reacts in the drug sensitivity culture medium for a preset time, the determination result can be obtained. Compared with existing technologies, firstly, by sequentially arranging the filter sponge 21 and filter membrane 22 along the outlet direction in the filter channel, the diluted solution in the solution chamber 11 first passes through the filter sponge 21 to filter secretions from the sample, thus ensuring the clarity of the diluted solution inoculated into the drug sensitivity culture medium. Furthermore, the filter membrane 22 filters out contaminants, ensuring that the diluted solution inoculated into the drug sensitivity culture medium is free of impurities and contaminants, improving the reliability and accuracy of the drug sensitivity culture medium test, and preventing situations that could mislead doctors in medication and patients in treatment. Secondly, since the hose body 10 and the filter drip head 20 are detachable structures, the diluent is injected into the solution chamber 11 and then the filter drip head 20 is installed for diluent inoculation. Compared with the traditional method of directly sucking the diluent into the filter chamber and inoculating it into the drug sensitivity culture medium, this method can further improve the reliability of impurity and bacteria filtration. Thirdly, after the diluent inoculation operation is completed, the filter drip head 20 can be separated from the hose body 10 for classified disposal, which can reduce the secondary sorting work of the recycling station and improve the efficiency of the entire waste recycling process.

[0035] In some embodiments, the filter drip head 20 includes a plug portion 201 and a drip portion 202 integrally formed on the bottom of the plug portion 201. A first mounting groove 203 is provided on the bottom of the peripheral side of the plug portion 201, and a first mounting protrusion 13 is provided on the inner side of the first opening 12. When the filter drip head 20 is installed in the first opening 12, the outer surface of the plug portion 201 can abut against the inner wall of the solution chamber 11, and the first mounting protrusion 13 is inserted into the first mounting groove 203. This structure improves the installation stability between the filter drip head 20 and the hose body 10.

[0036] Specifically, a first reinforcing ring 14 is provided at the bottom of the outer surface of the hose body 10. The first reinforcing ring 14 and the first mounting protrusion ring 13 are located at the same height and are spaced apart. The first reinforcing ring 14 further enhances the installation stability between the hose body 10 and the filter drip head 20, and prevents the filter drip head 20 from detaching from the hose body 10 or leaking liquid during the squeezing of the hose body 10.

[0037] In other embodiments, the insertion part 201 has a hollow filter chamber 204, and the filter sponge 21 and filter membrane 22 are stacked from top to bottom and disposed in the filter chamber 204.

[0038] It is understandable that the direction in which the filter sponge 21 and filter membrane 22 are stacked from top to bottom is the direction in which the liquid stored in the solution chamber 11 drips out through the filter drop head 20.

[0039] Specifically, the dripping channel includes a top outlet channel 205 and a bottom outlet channel 206. The top outlet channel 205 penetrates the upper surface of the insertion part 201 and is connected to the filter chamber 204. The bottom outlet channel 206 penetrates the lower surface of the dripping part 202 and is connected to the filter chamber 204. The diluent stored in the solution chamber 11 can flow into the filter chamber 204 through the top outlet channel 205 via the action hose body 10. After being filtered by the filter sponge 21 and filter membrane 22 in the filter chamber 204, the diluent drips outward from the bottom outlet channel 206.

[0040] Preferably, the diameter of the bottom liquid outlet channel 206 is 0.3 mm; by setting the bottom liquid outlet channel 206 to 0.3 mm, it is possible to control that each drop of liquid dripping out from the bottom liquid outlet channel 206 is 50 microliters.

[0041] In other embodiments, the cross-sections of the tubing body 10 and the filter drip head 20 are both circular, the cross-section of the first opening 12 is circular, the cross-section of the insertion part 201 is circular, the diameter of the insertion part 201 is larger than the diameter of the first opening 12, and the insertion part 201 and the first opening 12 are press-fitted together. The cross-section of the drip part 202 is circular, and the outer surface of the drip part 202 is gradually inclined from top to bottom towards the center. This structure allows the drip part 202 to gradually surface, thereby facilitating the operator to accurately drip the diluent into the drug sensitivity culture medium.

[0042] Specifically, the filter membrane 22 is any one of polyvinylidene fluoride membrane, mixed cellulose membrane, nylon membrane, or hydrophilic polytetrafluoroethylene membrane, and the filter membrane 22 has a number of filter pores penetrating its upper and lower surfaces, with a pore size of 0.45 micrometers.

[0043] Understandably, polyvinylidene fluoride (PVDF) membranes, with their uniformly sized and distributed pores, can effectively intercept microbial particles such as bacteria. Mixed cellulose membranes, composed of cellulose nitrate and cellulose acetate, can also block the passage of particles and microorganisms in fluids through their uniformly sized and distributed pores. Nylon membranes can filter all aqueous solutions and most organic solvents, and are resistant to various organic and inorganic compounds, including dilute acids and alkalis. Their uniformly sized and distributed pores can trap bacteria and microorganisms, achieving filtration and sterilization. Hydrophilic polytetrafluoroethylene (PTFE) membranes, with their uniformly sized and distributed pores, can intercept microbial particles, thus achieving filtration and sterilization.

[0044] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A disposable dropper with a filtering function, comprising a flexible tube body (10) having a solution chamber (11), wherein the bottom of the flexible tube body (10) is provided with a first opening (12) that is conductively connected to the solution chamber (11), characterized in that, The first opening (12) is detachably equipped with a filter drip head (20). The filter drip head (20) is provided with a drip channel that runs through its upper and lower surfaces. The drip channel is provided with a filter sponge (21) and a filter membrane (22) in sequence along the liquid outlet direction.

2. The disposable dropper with filtering function according to claim 1, characterized in that, The filter drip head (20) includes a plug-in part (201) and a drip part (202) integrally formed at the bottom of the plug-in part (201). The bottom of the peripheral side of the plug-in part (201) is provided with a first mounting groove (203), and the inner side of the first opening (12) is provided with a first mounting protrusion (13). When the filter drop head (20) is installed in the first opening (12), the outer surface of the plug part (201) can abut against the inner wall of the solution chamber (11), and the first mounting protrusion (13) is inserted into the first mounting groove (203).

3. The disposable dropper with filtering function according to claim 2, characterized in that, The bottom of the outer surface of the hose body (10) is provided with a first reinforcing ring (14). The first reinforcing ring (14) and the first mounting protrusion ring (13) are located at the same height and are spaced apart.

4. The disposable dropper with filtering function according to claim 2 or 3, characterized in that, The insertion part (201) has a hollow filter chamber (204), and the filter sponge (21) and filter membrane (22) are stacked from top to bottom and disposed in the filter chamber (204).

5. The disposable dropper with filtering function according to claim 4, characterized in that, The droplet channel includes A top liquid outlet channel (205) penetrates the upper surface of the insertion part (201) and is conductively connected to the filter chamber (204); and, The bottom liquid outlet channel (206) penetrates the lower surface of the dripping part (202) and is connected to the filter chamber (204).

6. The disposable dropper with filtering function according to claim 5, characterized in that, The diameter of the bottom liquid outlet channel (206) is 0.3 mm.

7. The disposable dropper with filtering function according to claim 2, 3, 5, or 6, characterized in that, The cross-section of the first opening (12) is circular, the cross-section of the plug part (201) is circular, the diameter of the plug part (201) is larger than the diameter of the first opening (12), and the plug part (201) and the first opening (12) are interference-fitted together.

8. The disposable dropper with filtering function according to claim 6, characterized in that, The cross-section of the dripping part (202) is circular, and the outer surface of the dripping part (202) is gradually inclined from top to bottom towards the center.

9. The disposable dropper with filtering function according to claim 1, 2, 3, 5, 6, or 8, characterized in that, The filter membrane (22) is any one of polyvinylidene fluoride membrane, mixed cellulose membrane, nylon membrane or hydrophilic polytetrafluoroethylene membrane, and the filter membrane (22) has a number of filter pores penetrating its upper and lower surfaces, and the pore size is 0.45 micrometers.

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