Filtering device and disposable medical water sampling bag

Abstract

The utility model relates to the field of medical consumables, and provides a filtering device and a disposable medical water sampling bag. The filtering device comprises a filtering structure, a filtering membrane, a supporting pad and a funnel. The filter structure comprises a protective cover, a filter cup and a base, the filter cup is provided with scales, the base is provided with a supporting groove and a suction opening, and a filter membrane is composed of filter paper and a plastic package sheet. The medical water sampling bag is made of a waterproof and durable polyester fiber material, the interior of the medical water sampling bag is divided into areas through partition plates, elastic band fixing components are arranged, and the medical water sampling bag is provided with a culture dish, a suction tube, medical tweezers, alcohol disinfection cotton swabs, sampling liquid, disposable gloves and the like. The device and the sampling bag are convenient to operate, good in sealing and accurate in observation, pollution is reduced, the problems that a filter membrane is easy to damage and the sampling bag is imperfect in configuration are effectively solved, and accurate and efficient filtration and stable culture environment are ensured.

Description

Technical Field

[0001] The utility model relates to the field of medical consumables, in particular to a filtering device and a disposable medical water sampling bag. Background Art

[0002] In the medical field, especially in the detection and analysis of medical water, accurate, efficient and safe sampling is crucial. At present, there are many deficiencies in the existing technology and equipment for sampling and testing medical water.

[0003] The patent document with publication number CN202110364244.8 discloses a bacteria collection device and method, a disposable sterile filter, a disposable sterile filter including a filter cup, a filter cup bottom sleeve and a microporous filter membrane, a filter cup bottom sleeve installed at the bottom end of the filter cup, and a microporous filter membrane installed in the center between the filter cup and the filter cup bottom sleeve. When in use, the disposable sterile filter is placed on the filter bed of the filtration equipment, and the water sample poured into the disposable sterile filter is allowed to pass through the microporous filter membrane into the confluence pipe by starting the water pump, and finally transported to the water storage tank through the delivery conduit, while the bacteria contained in the water sample remain above the microporous filter membrane. After the microporous filter membrane is taken out, bacteria culture and detection can be carried out, thereby achieving rapid acquisition and detection of bacteria in the water sample. The patent filters bacteria through a microporous filter membrane and uses a tool to directly take out the microporous filter membrane after the filtration is completed. At this time, the filter membrane is in a wet state, and direct use will cause the filter membrane to be damaged and difficult to clamp.

[0004] In terms of sampling of disposable medical water, existing sampling packages usually have problems such as imperfect configuration, incomplete tools, or insufficient coordination between tools. When sampling, sampling personnel need to prepare the tools required for sampling in advance, and sterilize and package them for future use. The preparation process of related tools is relatively cumbersome, and there are certain requirements for personnel and equipment during the sterilization process. The sterilized sampling tools are easily contaminated during carrying. Therefore, designing a sterile sampling package that has been sterilized and easy to carry has great practical significance for the inspection and supervision work of relevant units and enterprises. Summary of the invention

[0005] The utility model aims to overcome the problems in the prior art of difficulty in clamping filter membranes and imperfect configuration of disposable medical water sampling packages.

[0006] To achieve the above purpose, the idea of ​​solving the technical problem of the utility model is: designing a filter membrane that can be matched with a special vacuum filtration device, the edge of which is wrapped with a plastic sheet to ensure that it can be easily clamped after vacuum suction and liquid infiltration. At the same time, a set of equipment adapted to the vacuum filtration device is configured, including a culture dish adapted to the above filter membrane, a suction tube adapted to the vacuum filtration device, and tweezers for conveniently clamping the filter membrane.

[0007] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0008] A filtering device includes a filtering structure, a filter membrane, a support pad and a funnel. The filter membrane and the support pad are both arranged inside the filtering structure, and the filter membrane is arranged above the support pad. The filter membrane includes filter paper and a plastic sealing sheet, and the plastic sealing sheet is annularly wrapped around the edge of the filter paper.

[0009] Further, the plastic sealing sheet extends outward to the outer side of the edge of the filter paper for clamping.

[0010] Further, the filtering structure includes a protective cover, a filtering cup and a base. The protective cover is threadedly connected to the filtering cup, and the base is installed at the lower end of the filtering cup.

[0011] Further, the upper end of the base is provided with a support groove, and a water drainage port is provided through the middle thereof, and a suction port is arranged at the bottom of the water drainage port.

[0012] Further, a water inlet is provided on the protective cover.

[0013] A disposable medical water sampling kit internally contains a filtering device, a culture dish, a suction tube and medical forceps. The filtering device is used to filter medical water. The culture dish fits with the protective cover, and the medical forceps are in an "L" shape.

[0014] Further, the inner diameter of the culture dish is larger than the diameter of the plastic sealing sheet.

[0015] Further, the diameter of the suction tube is larger than the suction port, and rubber strips are arranged inside both ends of the tube to increase friction.

[0016] Further, the sampling kit body is rectangular, and is internally provided with partitions and elastic bands for placing the filtering device, the culture dish, the suction tube, alcohol disinfection cotton swabs, sampling liquid, disposable gloves and medical forceps. A carrying handle is arranged at the top of the sampling kit body.

[0017] The beneficial effects of the present utility model are:

[0018] 1. The filtering device of the present utility model optimizes the fixing and taking-out methods of the filter membrane in design, avoiding the problems of filter membrane breakage and difficult clamping caused by directly taking the wet filter membrane in the prior art, improving the convenience and integrity of the filter membrane use, and thus ensuring the accuracy of filtering and detection.

[0019] 2. The disposable medical water sampling kit of the present utility model is equipped with complete and closely cooperating tools, such as a culture dish that fits with the protective cover, a suction tube with a specific shape and size, and "L"-shaped medical forceps, etc., solving the defects of imperfect tool configuration and loose cooperation in the existing sampling kit, and greatly improving the sampling efficiency and quality.

[0020] 3. Since the disposable medical water sampling package of the present utility model is equipped with a suction tube, it is not only suitable for use with ordinary vacuum pumps, but also more suitable for use with portable vacuum pumps. Moreover, it is convenient to package and carry, eliminating the need for sampling personnel to prepare and sterilize tools separately in a cumbersome manner in advance, reducing the requirements for personnel and equipment. At the same time, it reduces the risk of the sterilized tools being contaminated during transportation, providing great convenience for the inspection and supervision work of relevant units and enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an exploded view of the filtering device of the present utility model;

[0022] Figure 2 It is a bottom view of the protective cover of the filtering device of the present utility model;

[0023] Figure 3 It is a top view of the protective cover of the filtering device of the present utility model;

[0024] Figure 4 It is a structural schematic diagram of the filter cup of the filtering device of the present utility model;

[0025] Figure 5 It is a structural schematic diagram of the filter membrane of the filtering device of the present utility model;

[0026] Figure 6 It is a structural schematic diagram of the support pad of the filtering device of the present utility model;

[0027] Figure 7 It is a structural schematic diagram of the base of the filtering device of the present utility model;

[0028] Figure 8 It is a bottom view of the base of the filtering device of the present utility model;

[0029] Figure 9 It is a side view structural schematic diagram of the base of the filtering device of the present utility model;

[0030] Figure 10 It is a structural schematic diagram of the funnel of the filtering device of the present utility model;

[0031] Figure 11 It is a structural schematic diagram of the tweezers included in the disposable medical water sampling package of the present utility model;

[0032] Figure 12 It is a structural schematic diagram of the disposable medical water sampling package of the present utility model;

[0033] Figure 13 It is a front view structural schematic diagram of the filtering device of the present utility model;

[0034] Figure 14 It is a sectional structural schematic diagram of the filtering device of the present utility model;

[0035] Figure 15 For Figure 14 Partial detailed view of part I;

[0036] Among them, the above-mentioned drawings include the following reference numerals:

[0037] 10. Filter structure; 11. Protective cover; 111. Water inlet; 112. First rubber plug; 12. Filter cup; 13. Base; 131. Support groove; 132. Drainage port; 133. Suction port; 134. Second rubber plug; 20. Filter membrane; 21. Filter paper; 22. Plastic-sealed sheet; 30. Support pad; 40. Funnel; 61. Petri dish; 62. Suction tube; 63. Forceps. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] Embodiment 1

[0041] The present invention provides a filtering device, including a filter structure 10, a filter membrane 20, a support pad 30 and a funnel 40. Next, the present invention will be further elaborated with the preferred embodiments of the present invention: The filter structure 10 is composed of a protective cover 11, a filter cup 12 and a base 13. The protective cover 11 is tightly installed on the upper part of the filter cup 12 by means of threaded connection, and its top is provided with a water inlet 111 with a diameter of about 2.5 cm. A first rubber plug 112 is configured on the water inlet 111 to block the water inlet. In this way, during vacuum suction, the interior of the filter cup can be ensured to maintain a sealed state. Figures 1-15 Specifically, the protective cover 11, the filter cup 12 and the base 13 are all made of medical-grade transparent polyvinyl chloride (PVC) material. The protective cover 11 is composed of two nested circular devices. The inner ring diameter is about 6.5 cm, which is larger than the diameter of the plastic-sealed sheet 22. The outer diameter is larger than the diameter of the base 13. The water inlet 111 is precisely matched with the bottom diameter of the funnel 40.

[0042] Specifically, during implementation, the protective cover 11, the filter cup 12 and the base 13 are all made of medical-grade transparent polyvinyl chloride (PVC) material. The protective cover 11 is composed of two nested circular devices. The inner ring diameter is about 6.5 cm, which is larger than the diameter of the plastic-sealed sheet 22. The outer diameter is larger than the diameter of the base 13. The water inlet 111 is precisely matched with the bottom diameter of the funnel 40.

[0043] In specific implementation, the inner diameter of the filtering cup 12 is about 8 cm, the inner diameter of the bottom is equal to the diameter of the plastic-sealed sheet 22, and a rubber strip is arranged inside the bottom to ensure sealing. The height of the filtering cup 12 is about 9 cm, and scales are arranged on the upper part of the filtering cup 12, so that the water volume can be observed when pouring medical water.

[0044] In specific implementation, the filter membrane 20 is composed of a filter paper 21 and a plastic-sealed sheet 22 made of polypropylene. The filter paper 21 is a microfiltration membrane. The plastic-sealed sheet 22 is annularly wrapped around the edge of the filter paper 21 at 3 mm by a hot pressing process and extends 6 mm outward. When clamping, only need to clamp the plastic-sealed sheet 22 with tweezers to remove the filter membrane 20, and the filter membrane will not be damaged.

[0045] In specific implementation, the support pad 30 is a polypropylene fiber fabric with a thickness of about 2.5 mm, and its size is equal to that of the filter membrane 20. During filtration, the support pad 30 is placed between the filter paper 21 and the base 13 to support the filter paper 21 and prevent wrinkles from occurring during the vacuum suction process, but it does not block the water flow and does not play a filtering role.

[0046] In specific implementation, the diameter of the base 13 is 10 cm, and the protruding support groove 131 at its upper end is composed of a plurality of rings with different diameters. And the diameter of the support groove 131 is equal to the diameter of the plastic-sealed sheet 22. The water drainage holes 132 penetrating through the middle of the base 13 are a plurality of small-diameter round holes, and a suction port 133 is arranged at the bottom of the water drainage holes 132. The outer diameter of the ring composed of a plurality of water drainage holes 132 is smaller than the suction port 133. The diameter of the suction port 133 is about 1.5 cm, which is used to connect the pipeline of an external suction device, or can be directly connected to a vacuum pump. A second rubber plug 134 is arranged on the suction port 133 to block the suction port 133.

[0047] During specific operation, place the support pad 30 on the support groove 131 of the base 13, and then place the filter membrane 20 on the support pad 30. Then, place the filtering cup 12 on the base 13 and make its bottom just tightly fit outside the support groove 131 to ensure sealing. Cover the protective cover 11 and open the first rubber plug 112. Insert the bottom of the funnel 40 into the water inlet 111 to pour medical water, and observe the scales on the wall of the filtering cup 12. After pouring, cover the first rubber plug 112. Open the second rubber plug 134 and insert the suction tube 62, and then connect the suction tube 62 to a portable vacuum pump; or directly place the base 13 on the vacuum pump. After the vacuum suction is completed, remove the filtering cup 12, use tweezers 63 to remove the filter membrane 20 and place it in the culture dish 61, and cover the protective cover 11 on the culture dish 61. Through such an orderly and precise operation process, the leakage of the water sample during the filtration process can be effectively avoided, the stability and efficiency of the vacuum suction can be ensured, and thus the accuracy and reliability of the filtration effect can be guaranteed.

[0048] The main body of the disposable medical water sampling kit is a rectangle with a length of 28 cm and a width of 18 cm. It is made of waterproof and durable polyester fiber material. The handle at the top is fixed by rivets. The internal area is divided by a rigid partition, and each component is fixed by an elastic drawstring. The petri dish 61 is made of heat-resistant borosilicate glass and placed in a specific groove inside the sampling kit. The suction tube 62 is made of medical-grade polyethylene PE material, with a length of about 22 cm and a diameter of about 1.8 cm. Rubber strips about 0.6 cm wide are provided at both ends of the tube to increase friction. The medical forceps 63 are in an "L" shape and made of stainless steel, with a length of about 10 cm. In addition, the sampling kit is also equipped with alcohol swabs in an independent sealed plastic bag, sampling liquid in a leak-proof plastic bottle, disposable gloves stacked in a special compartment, etc.

[0049] Embodiment 2

[0050] Reference Figures 1-15 Regarding the process of clamping the filter membrane 20 in Embodiment 1, during the experiment, there is a feasible operation method, that is, the filter membrane 20 can be directly cultured on the base without being removed. And since the inner diameter of the protective cover 11 matches the support groove 131 of the base 13, the protective cover 11 can be covered on the base 13.

[0051] Such a design has significant technical effects. On the one hand, directly culturing on the base without removing the filter membrane 20 reduces the operation steps and the risk of the filter membrane 20 being contaminated or damaged during transfer, thus ensuring the accuracy and reliability of the experimental results. On the other hand, the matching design of the protective cover 11 and the base 13 enables the protective cover 11 to be tightly covered on the base 13, providing a good closed environment for the culturing process, effectively blocking the intrusion of external pollutants, and at the same time helping to maintain the stability of the culturing environment, such as temperature, humidity and other conditions, thereby providing a strong guarantee for the smooth progress of the experiment and the validity of the results.

[0052] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A filtering device, comprising a filtering structure (10), a filter membrane (20), a support pad (30) and a funnel (40), characterized in that: The filter membrane (20) and the support pad (30) are both arranged inside the filter structure (10), and the filter membrane (20) is arranged above the support pad (30). The filter membrane (20) comprises filter paper (21) and a plastic sealing sheet (22), and the plastic sealing sheet (22) is wrapped around the edge of the filter paper (21) in a ring shape.

2. A filtering device according to claim 1, characterized in that: The plastic sealing sheet (22) extends outwardly from the edge of the filter paper (21) for clamping.

3. A filtering device according to claim 1, characterized in that: The filtering structure (10) comprises a protective cover (11), a filtering cup (12) and a base (13); the protective cover (11) is connected to the filtering cup (12) via threads, and the base (13) is installed at the lower end of the filtering cup (12).

4. A filtering device according to claim 3, characterized in that: The upper end of the base (13) is provided with a supporting groove (131), and a drain port (132) is provided through the middle thereof, and a suction port (133) is provided at the bottom of the drain port (132).

5. A filtering device according to claim 3, characterized in that: The protective cover (11) is provided with a water inlet (111).

6. A disposable medical water sampling kit, comprising a filter device as described in any one of claims 3 to 5.

7. The disposable medical water sampling kit according to claim 6, characterized in that: It also comprises a sampling package body, wherein the sampling package body has a culture dish (61), a suction tube (62) and medical forceps (63) built therein, and the culture dish (61) cooperates with the protective cover (11).

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