Contamination-proof disposable antigen detection test kit
By incorporating an annular airbag and an air injection mechanism within the testing chamber to hold the sampling rod, the problem of external contamination caused by the open feeding tank structure is solved, thus ensuring the reliability of the test results and environmental safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU NUODONG BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-07-24
AI Technical Summary
In the prior art, test kits with open feed tank structures are easily contaminated by external pollutants when adding viscous reagents, which affects the accuracy of the test results.
Multiple test cards are installed on the bottom wall of the test box. The outer side has an annular through groove and a magnetic cover plate, while the inner side has an annular airbag and an air injection mechanism. The air injection mechanism expands the annular airbag to clamp the sampling rod, forming a dynamic seal to prevent external pollutants from entering.
It effectively prevents external droplets and dust from entering the test kit, ensuring the reliability of test results, and keeps the inside sealed before and after use to prevent the spread of pathogens and environmental pollution.
Smart Images

Figure CN224553282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of antigen test kits, and in particular to a disposable antigen test kit that is resistant to contamination. Background Technology
[0002] A typical test kit includes reagents, sampling tubes, test cards, and sampling swabs. First, a sample is taken through the sampling tube. Then, the reagent is dropped onto the test card. Next, a small amount of sample from the sampling tube is adsorbed onto the test card using the sampling swab, and an enzymatic reaction is carried out. The specific situation is detected based on the reaction results.
[0003] In Chinese utility model patents, such as CN221141737U, a test kit is disclosed. The beneficial effect of this utility model is that the sample is taken by the card plate, and then the reagent is dripped onto the test card along the feeding groove. The sampling rod takes an appropriate amount of sample from the sampling tube and drips it onto the test card again along the feeding groove, so that the sample reacts with the reagent. Then the cap is movably locked with the feeding groove to seal the test card in the test box, thereby preventing external pollutants from affecting the test results of the test card and increasing the accuracy of the test results. However, when the above technology is used, the feeding tank has an open, inclined structure. If the reagent is viscous, the time it takes for the reagent to drip onto the test card will be significantly longer. External contaminants, such as droplets from the operator, may enter the test box through the open feeding tank during reagent addition, causing contamination of the test card. In view of this, this application proposes a contamination-proof disposable antigen test kit. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a contamination-proof disposable antigen detection kit.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A contamination-resistant disposable antigen test kit includes a test box with multiple test cards mounted on its bottom wall. Multiple annular slots are formed on the outer side of the test box, and each annular slot is magnetically sealed with a magnetic cover. An annular airbag is mounted on the inner side of each annular slot. An injection cylinder is fixedly mounted on the outer side of each test box, and each injection cylinder contains an injection mechanism connected to a corresponding annular airbag. Multiple diagonal bracing plates are mounted on the side walls of the test box.
[0006] Preferably, each of the gas injection mechanisms includes a gas injection bladder, and each gas injection bladder is installed on the bottom wall of the gas injection cylinder. Each gas injection bladder is connected to a corresponding annular bladder through a connecting pipe. Each gas injection cylinder has a slidably connected compression seat inside. Multiple spring telescopic rods are installed between the outer side of each compression seat and the side wall of the gas injection cylinder. An insert rod is fixedly installed on the outer side of each compression seat. Each gas injection cylinder has a latching mechanism on its outer side, and the latching mechanism is connected to the corresponding insert rod.
[0007] Preferably, each of the annular through slots has a plurality of first magnets circumferentially distributed on its outer side, each of the magnetic cover plates has a plurality of second magnets circumferentially distributed on its outer side, and each of the magnetic cover plates has a sealing gasket installed on its outer side.
[0008] Preferably, each of the buckling mechanisms includes a retaining ring, and each retaining ring is fixedly installed on the outer end face of the air injection cylinder. Each retaining ring has a movable groove inside, and two openings are symmetrically opened on the outer side of each retaining ring. Each insert rod is rotatably connected to a rotating plate on its outer side, and the top surface of each rotating plate abuts against the side wall of the movable groove corresponding to its position.
[0009] Preferably, a top cover is fixedly installed on the top surface of the detection box, a viewing window is installed on the top surface of the top cover, a label is installed on the top surface of the top cover, and multiple placement slots are opened on the top surface of the detection box.
[0010] Preferably, each of the magnetic cover plates has a protrusion installed on its outer side, and each magnetic cover plate is concentrically arranged with the protrusion corresponding to its position.
[0011] This utility model has the following beneficial effects: 1. This utility model, through devices such as an air injection mechanism, annular airbag, and inclined support plate, enables the sampling rod to be inserted into the test box and in contact with the test card without immediate removal. The air injection mechanism quickly injects air into the annular airbag, thereby clamping the sampling rod through the expansion of the annular airbag and forming a dynamic sealing barrier. This effectively prevents external droplets, dust, and other contaminants from entering the test box, avoiding contamination of the test card and ensuring the reliability of the test results.
[0012] 2. This utility model achieves magnetic sealing between the magnetic cover plate and the annular through groove, the first magnet, the second magnet, the magnetic cover plate, and the sealing gasket through a device, which can keep the internal seal of the test box before and after use, thereby blocking the spread of pathogens inside the test box and avoiding pollution to the external environment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the pollution-proof disposable antigen test kit proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of the detection box of the pollution-proof disposable antigen detection reagent kit proposed in this utility model; Figure 3 This is a schematic diagram of the gas injection mechanism of the pollution-proof disposable antigen test kit proposed in this utility model. Figure 4 This is a schematic diagram of the inclined support plate installation structure of the pollution-proof disposable antigen test reagent kit proposed in this utility model; Figure 5 This is a schematic diagram of the spring telescopic rod installation structure of the pollution-proof disposable antigen test reagent kit proposed in this utility model.
[0014] In the diagram: 1. Detection box; 2. Top cover; 3. Viewing window; 4. Placement slot; 5. Label; 6. Magnetic cover plate; 7. Air injection cylinder; 8. Snap ring; 9. Detection card; 10. Annular through groove; 11. First magnet; 12. Annular airbag; 13. Sealing gasket; 14. Second magnet; 15. Protrusion; 16. Connecting pipe; 17. Diagonal brace; 18. Air injection airbag; 19. Compression seat; 20. Insert rod; 21. Spring telescopic rod; 22. Rotating plate; 23. Movable groove; 24. Opening. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] This utility model provides a technical solution: such as Figure 1-5 As shown, the contamination-proof disposable antigen test kit includes a test box 1. Multiple test cards 9 are installed on the bottom wall of the test box 1. Multiple annular slots 10 are formed on the outer side of the test box 1. A magnetic cover plate 6 is magnetically sealed to the outer side of each annular slot 10. An annular airbag 12 is installed on the inner side of each annular slot 10. An air injection cylinder 7 is fixedly installed on the outer side of each test box 1. Each air injection cylinder 7 has an air injection mechanism, and each air injection mechanism is connected to the corresponding annular airbag 12. Multiple inclined support plates 17 are installed on the side wall of the test box 1. The inclined support plates 17 facilitate the support of the sampling rod inserted into the annular slot 10, and the air injection mechanism allows the annular airbag 12 to expand, causing the inner side of the annular airbag 12 to abut against the outer side of the sampling rod, clamping and fixing the sampling rod while preventing outside air from entering the test box 1.
[0017] Furthermore, each injection mechanism includes an injection bladder 18, and each injection bladder 18 is installed on the bottom wall of the injection cylinder 7. Each injection bladder 18 is connected to the corresponding annular bladder 12 through a connecting pipe 16. Each injection cylinder 7 has a slidably connected compression seat 19. Multiple spring telescopic rods 21 are installed between the outer side of each compression seat 19 and the side wall of the injection cylinder 7. An insertion rod 20 is fixedly installed on the outer side of each compression seat 19. Each injection cylinder 7 has a latching mechanism on its outer side, and the latching mechanism is connected to the corresponding insertion rod 20. The multiple spring telescopic rods 21 facilitate the compression seat 19 to be pushed outward and reset, and the compression of the injection bladder 18 can provide a gas source for the annular bladder 12.
[0018] Furthermore, each annular groove 10 has multiple first magnets 11 circumferentially distributed on its outer side, and each magnetic cover plate 6 has multiple second magnets 14 circumferentially distributed on its outer side. Each magnetic cover plate 6 has a sealing gasket 13 installed on its outer side. It should be noted that the attraction between the second magnet 14 and the first magnet 11 can compress the sealing gasket 13 to deform, thereby filling the gap between the magnetic cover plate 6 and the annular groove 10, thus achieving a seal, and allowing for convenient disassembly and installation.
[0019] Furthermore, each snap-fit mechanism includes a snap ring 8, and each snap ring 8 is fixedly installed on the outer end face of the air cylinder 7. Each snap ring 8 has a movable groove 23, and each snap ring 8 has two symmetrical openings 24 on its outer side. Each insert rod 20 is rotatably connected to a rotating plate 22 on its outer side, and the top surface of each rotating plate 22 abuts against the side wall of the movable groove 23 corresponding to its position. Under the action of the spring telescopic rod 21, the rotating plate 22 can abut against the top wall of the movable groove 23, thereby limiting the insertion rod 20 and ensuring the expansion state of the annular airbag 12. The openings 24 facilitate the rotation plate 22 to disengage from the movable groove 23, thereby allowing the airbag 18 to expand under the action of the spring telescopic rod 21 and extracting the air from the annular airbag 12, causing the annular airbag 12 to shrink.
[0020] Furthermore, a top cover 2 is fixedly installed on the top surface of the test box 1, a viewing window 3 is installed on the top surface of the top cover 2, a label 5 is installed on the top surface of the top cover 2, and multiple placement slots 4 are opened on the top surface of the test box 1. The placement slots 4 facilitate the placement of the magnetic cover plate 6, and the label 5 is printed with a test instruction manual for easy reference by the user.
[0021] Furthermore, each magnetic cover plate 6 has a protrusion 15 installed on its outer side, and each magnetic cover plate 6 is concentrically arranged with the corresponding protrusion 15.
[0022] This utility model provides a disposable antigen test kit that is pollution-proof. The specific working principle is as follows: When the operator uses it, he first takes the test box 1 out of the packaging bag and rotates the rotating plate 22 so that the two ends of the rotating plate 22 correspond to the opening 24. Under the action of the spring telescopic rod 21, the squeezing seat 19 slides outward, thereby causing the inflation bladder 18 to expand and draw out the gas in the annular bladder 12. The expansion state of the annular bladder 12 is released. At this time, the operator can take out the magnetic cover plate 6 through the protrusion 15 and place it in the placement groove 4 on the top surface. Next, the sampling rod is inserted into the test box 1 through the annular groove 10, and one end of the sampling rod is made to abut against the test paper of the test card 9. At this time, the sampling rod can be supported by the inclined support plate 17. Then, the operator rotates the rotating plate 22 and makes it enter the movable groove 23 through the opening 24. Then, the rotating plate 22 is rotated and pushed, thereby compressing multiple spring telescopic rods 21 and causing the squeezing seat 19 to squeeze the air bladder 18, causing the annular air bladder 12 to expand. At the same time, the movable groove 23 and the rotating plate 22 are limited to maintain the expanded state of the annular air bladder 12, which can clamp the sampling rod and reduce the entry of outside air. After the test is completed, the operator can view the results through the viewing window 3. After the device is used, the clamp on the sampling rod can be released and the sampling rod can be pushed into the test box 1. Then, each magnetic cover plate 6 is re-magnetically attached to the outside of the annular air bag 12 to complete the sealing of the test box 1 and prevent the internal solution from flowing out and causing pollution to the external environment after the device is discarded.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A contamination-resistant disposable antigen test kit, comprising a test box (1), characterized in that, Multiple detection cards (9) are installed on the bottom wall of the detection box (1). Multiple annular through slots (10) are opened on the outer side of the detection box (1). A magnetic cover plate (6) is magnetically sealed to the outer side of each annular through slot (10). An annular airbag (12) is installed on the inner side of each annular through slot (10). An air injection cylinder (7) is fixedly installed on the outer side of each detection box (1). An air injection mechanism is provided in each air injection cylinder (7), and each air injection mechanism is connected to the annular airbag (12) with the corresponding position. Multiple inclined support plates (17) are installed on the side wall of the detection box (1).
2. The contamination-resistant disposable antigen test kit according to claim 1, characterized in that, Each of the gas injection mechanisms includes a gas injection bladder (18), and each gas injection bladder (18) is installed on the bottom wall of the gas injection cylinder (7). Each gas injection bladder (18) is connected to a corresponding annular bladder (12) through a connecting pipe (16). Each gas injection cylinder (7) is slidably connected with a compression seat (19). Multiple spring telescopic rods (21) are installed on the outer side of each compression seat (19) and the side wall of the gas injection cylinder (7). An insert rod (20) is fixedly installed on the outer side of each compression seat (19). Each gas injection cylinder (7) is provided with a buckling mechanism on the outer side, and the buckling mechanism is connected to the corresponding insert rod (20).
3. The contamination-resistant disposable antigen test kit according to claim 2, characterized in that, Each of the annular through slots (10) has a plurality of first magnets (11) circumferentially distributed on its outer side, and each of the magnetic cover plates (6) has a plurality of second magnets (14) circumferentially distributed on its outer side, and each of the magnetic cover plates (6) has a sealing gasket (13) installed on its outer side.
4. The contamination-resistant disposable antigen test kit according to claim 3, characterized in that, Each of the aforementioned buckling mechanisms includes a retaining ring (8), and each retaining ring (8) is fixedly installed on the outer end face of the air injection cylinder (7). Each retaining ring (8) has a movable groove (23) inside, and two openings (24) are symmetrically opened on the outer side of each retaining ring (8). Each insert rod (20) is rotatably connected to a rotating plate (22) on its outer side, and the top surface of each rotating plate (22) abuts against the side wall of the movable groove (23) corresponding to its position.
5. The contamination-resistant disposable antigen test kit according to claim 4, characterized in that, The top surface of the test box (1) is fixedly equipped with a top cover (2), the top surface of the top cover (2) is equipped with a viewing window (3), the top surface of the top cover (2) is equipped with a label (5), and the top surface of the test box (1) is provided with multiple placement slots (4).
6. The contamination-resistant disposable antigen test kit according to claim 5, characterized in that, Each of the magnetic cover plates (6) has a protrusion (15) installed on its outer side, and each magnetic cover plate (6) is concentrically arranged with the corresponding protrusion (15).