A foldable reagent card

Abstract

This application provides a foldable reagent card, belonging to the technical field of reagent card technology, comprising: an upper card body and a lower card body that are fastened together, with an upper test strip and a lower test strip respectively installed inside the upper and lower card bodies; the upper card body has a first sample application hole, a first detection window, and a clearance hole, the first sample application hole and the first detection window being located on the upper and lower sides of the upper test strip respectively, and the clearance hole penetrating the upper card body from top to bottom, the clearance hole being offset from the upper test strip; the top surface of the lower card body has a second sample application hole and a second detection window corresponding to the lower test strip, the second sample application hole being directly opposite the clearance hole. The foldable reagent card provided by this application, because the first and second detection windows are folded between the upper and lower card bodies, avoids the first and second detection windows being exposed, effectively preventing contamination or damage to the upper test strip at the first detection window and the lower test strip at the second detection window, thus ensuring the accuracy of the test results.

Description

Technical Field

[0001] This application belongs to the field of reagent card technology, and more specifically, relates to a foldable reagent card. Background Technology

[0002] Reagent cards are rapid testing tools based on immunochromatography or colloidal gold technology, widely used in medical diagnostics, food safety, and drug testing. Existing reagent cards have a sample application well and a detection window. The sample is injected into the well and brought into contact with the test strip. The reagent card is then inserted into a testing instrument, which uses chemical reaction colorimetry or immunochromatography to read and analyze the test strip at the detection window, thus obtaining the test result. However, the detection window on existing reagent cards is always exposed, making the test strip at the detection window susceptible to contamination and damage, thus affecting the accuracy of the test results. Utility Model Content

[0003] The purpose of this application is to provide a foldable reagent card, which aims to solve the problem that the detection window on existing reagent cards is exposed, and the test strip at the detection window is easily contaminated and damaged, thus affecting the accuracy of the test results.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a foldable reagent card is provided, comprising: an upper card body and a lower card body that are fastened together, wherein an upper test strip and a lower test strip are respectively installed in the upper card body and the lower card body; the upper card body is provided with a first sample application hole, a first detection window and a clearance hole, the first sample application hole and the first detection window are respectively located on the upper and lower sides of the upper test strip, and the clearance hole extends through the upper card body from top to bottom, and the clearance hole is offset from the upper test strip; the top surface of the lower card body is provided with a second sample application hole and a second detection window corresponding to the lower test strip, and the second sample application hole is directly opposite the clearance hole.

[0005] In one possible implementation, the upper card body and the lower card body are hinged together by a connecting block, and the connecting block is provided with a support shaft that is rotatably connected to the upper card body and the lower card body.

[0006] In one possible implementation, the connecting block has a notch located near the support shaft.

[0007] In one possible implementation, the bottom surface of the upper card body is provided with a snap-fit ​​post, and the top surface of the lower card body is provided with a slot that matches the snap-fit ​​post. The snap-fit ​​post and the slot are in an interference fit.

[0008] In one possible implementation, the top surface of the lower card body is provided with a snap-fit ​​post, and the bottom surface of the upper card body is provided with a slot that matches the snap-fit ​​post, wherein the snap-fit ​​post and the slot are in an interference fit.

[0009] In one possible implementation, the top opening of the first sample feeding hole and / or the clearance hole is provided with a guide radius.

[0010] In one possible implementation, a guide bevel is provided at the top opening of the second sample application port and / or the second detection window.

[0011] In one possible implementation, there are multiple first detection windows arranged along the length of the upper test strip.

[0012] In one possible implementation, the first detection window and the second detection window are positioned vertically opposite each other.

[0013] In one possible implementation, the outer side wall of the upper card body and / or the lower card body is provided with anti-slip texture.

[0014] Compared with the prior art, the foldable reagent card of this application has a separate upper and lower card body structure, used as two reagent cards. Before reading the sampling information on the two reagent cards, the upper and lower card bodies are fastened together in an up-down manner. An upper test strip and a lower test strip are respectively installed in the upper and lower card bodies. The first sample application hole and the first detection window are located on the upper and lower sides of the upper test strip, respectively. The clearance hole runs through the upper card body from top to bottom and is offset from the upper test strip. The second sample application hole and the second detection window are both opened on the top surface of the lower test strip, and the second sample application hole is directly opposite the clearance hole. When sampling is required, the sample can be injected into the upper test strip through the first sample application hole or into the lower test strip through the channel formed by the clearance hole and the second sample application hole. Since the first and second detection windows are folded between the upper and lower card bodies, the first and second detection windows are not exposed, effectively preventing the upper test strip at the first detection window and the lower test strip at the second detection window from being contaminated or damaged, thus ensuring the accuracy of the test results. When it is necessary to read the sampling information on the upper and lower card bodies, the upper and lower card bodies can be opened and inserted into the testing instrument respectively. Attached Figure Description

[0015] 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.

[0016] Figure 1 A three-dimensional structural diagram of a folded reagent card (in a snap-fit ​​state) provided in an embodiment of this application; Figure 2A three-dimensional structural diagram of a foldable reagent card (open state) provided in an embodiment of this application. Figure 1 ; Figure 3 A three-dimensional structural diagram of a foldable reagent card (open state) provided in an embodiment of this application. Figure 2 ; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the upper card body provided in an embodiment of this application; Figure 6 This is a three-dimensional structural diagram of the lower card body provided in an embodiment of this application; Figure 7 This is a three-dimensional structural diagram of the connecting block provided in an embodiment of this application.

[0017] In the diagram: 101, upper card body; 102, lower card body; 103, upper test paper; 104, lower test paper; 105, first sample application hole; 106, first detection window; 107, clearance hole; 108, second sample application hole; 109, second detection window; 110, connecting block; 111, support shaft; 112, positioning groove; 113, shaft hole; 114, disassembly hole; 115, notch; 116, snap-fit ​​post; 117, card slot; 118, guide radius; 119, guide bevel; 120, anti-slip texture. Detailed Implementation

[0018] 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.

[0019] Please refer to the following: Figures 1 to 3 The present application provides a foldable reagent card. The foldable reagent card includes: an upper card body 101 and a lower card body 102 that are fastened together; an upper test strip 103 and a lower test strip 104 are respectively installed inside the upper card body 101 and the lower card body 102; the upper card body 101 has a first sample application hole 105, a first detection window 106, and a clearance hole 107; the first sample application hole 105 and the first detection window 106 are located on the upper and lower sides of the upper test strip 103, respectively; the clearance hole 107 extends from top to bottom through the upper card body 101 and is offset from the upper test strip 103; the top surface of the lower card body 102 has a second sample application hole 108 and a second detection window 109 corresponding to the lower test strip 104; the second sample application hole 108 is directly opposite the clearance hole 107.

[0020] This embodiment provides a foldable reagent card. Compared with the prior art, the upper card body 101 and the lower card body 102 are separate structures, used as two reagent cards. Before reading the sampling information on the two reagent cards, the upper card body 101 and the lower card body 102 are fastened together in an upper-lower configuration. An upper test strip 103 and a lower test strip 104 are respectively installed inside the upper card body 101 and the lower card body 102. The first sample application hole 105 and the first detection window 106 are located on the upper and lower sides of the upper test strip 103, respectively. A clearance hole 107 penetrates the upper card body 101 from top to bottom, and the clearance hole 107 is offset from the upper test strip 103. The second sample application hole 108 and the second detection window 109 are both located on the top surface of the lower test strip 104, with the second sample application hole 108 directly opposite the clearance hole. 107; When sampling is required, the sample can be injected into the upper test paper 103 through the first sample application hole 105, or into the lower test paper 104 through the channel formed by the clearance hole 107 and the second sample application hole 108. Since the first detection window 106 and the second detection window 109 are folded between the upper card body 101 and the lower card body 102, the first detection window 106 and the second detection window 109 are not exposed, effectively preventing contamination or damage to the upper test paper 103 at the first detection window 106 and the lower test paper 104 at the second detection window 109, thus ensuring the accuracy of the test results. When it is necessary to read the sampling information on the upper card body 101 and the lower card body 102, the upper card body 101 and the lower card body 102 can be opened and inserted into the testing instrument respectively.

[0021] After insertion, the instrument analyzes the samples on the upper test strip 103 and lower test strip 104. The reactions on the upper test strip 103 and lower test strip 104 are observed and judged through the first detection window 106 and the second detection window 109, respectively. If both the upper test strip 103 and lower test strip 104 show negative results, it can be determined that the sample did not contain the specific substance. If a positive reaction occurs on the upper test strip 103 or lower test strip 104, such as a specific color change or line display, it indicates that the corresponding substance was detected in the sample. At this time, the testing personnel can further confirm the accuracy of the test results based on the detailed report provided by the instrument. Moreover, this split-structure reagent card design allows for flexible use in different scenarios. For example, in large-scale testing activities, multiple sets of upper and lower test strips 101 can be prepared simultaneously to test different samples, improving testing efficiency. In smaller testing locations, only one test strip can be selected for testing according to actual needs, reducing resource waste. Furthermore, the storage of reagent cards is more convenient, as the upper card body 101 and lower card body 102 can be folded up for storage. After a period of use, if the performance of the reagent card is found to have deteriorated, such as deviations in the accuracy of the test results, or blockages in parts such as the sample dispensing port or detection window, a new reagent card can be replaced in a timely manner to ensure the normal operation of the testing work.

[0022] In some embodiments, please refer to Figures 1 to 7The upper clip 101 and the lower clip 102 are hinged together by a connecting block 110. The connecting block 110 is provided with support shafts 111 that are rotatably connected to both the upper clip 101 and the lower clip 102. In this embodiment, the upper clip 101 and the lower clip 102 have the same outer contour, and when fastened together, they are vertically aligned. Both the upper clip 101 and the lower clip 102 are elongated strips. The connecting block 110 is hinged to one end of the upper card body 101 and the lower card body 102 along their length. The connecting block 110 is provided with a support shaft 111 that is rotatably connected to the upper card body 101 and the lower card body 102. The axial direction of the support shaft 111 is perpendicular to the length direction of the upper card body 101 and the lower card body 102, so the upper card body 101 and the lower card body 102 can rotate around the support shaft 111 respectively, thereby realizing the snapping (folding) and opening of the upper card body 101 and the lower card body 102. The bottom surface of the upper card body 101 and the top surface of the lower card body 102 are provided with positioning grooves 112 for installing the connecting block 110. The depth of the positioning groove 112 is greater than the thickness of the connecting block 110. The connecting block 110 fits against the inner wall of the positioning groove 112. Therefore, when the upper card body 101 and the lower card body 102 are in the snap-fit ​​state, the connecting block 110 is located inside the upper card body 101 and the lower card body 102, preventing the connecting block 110 from being exposed and improving the overall aesthetics. Since the connecting block 110 is completely located in the positioning groove 112, when the upper card body 101 and the lower card body 102 are in the open state, the connecting block 110 will not protrude from the outer surface of the upper card body 101 and the lower card body 102. Two support shafts 111 are respectively provided on the two opposite outer side walls of the connecting block 110. The upper clamping body 101 and the lower clamping body 102 are each equipped with two coaxially arranged support shafts 111. The inner wall of the positioning groove 112 is provided with shaft holes 113 that are adapted to the support shafts 111. The shaft holes 113 are blind holes. The depth of the shaft holes 113 is greater than the length of the support shafts 111. The top surface of the upper clamping body 101 and the bottom surface of the lower clamping body 102 are both provided with disassembly holes 114 that communicate with the shaft holes 113. The free end of the support shaft 111 is exposed through the disassembly holes 114. The operator can apply a force to the support shaft 111 in a direction away from the shaft holes 113 through the disassembly holes 114, thereby causing the support shaft 111 to disengage from the shaft holes 113, realizing the separation of the upper clamping body 101 and the lower clamping body 102 from the connecting block 110, facilitating the replacement of the upper clamping body 101 and the lower clamping body 102. In this application, the upper card body 101 is a permeabilization reagent card, and the lower card body 102 is a chromatography reagent card. It should be noted that two identical permeabilization reagent cards can be installed together via the connecting block 110, and two identical chromatography reagent cards can also be installed together via the connecting block 110.

[0023] When different types of reagent cards are required for testing, the upper card body 101 and lower card body 102, which are already installed together, can be separated using the disassembly method described above. If a different combination is to be used, such as replacing the original permeation reagent card combination with a combination of a permeation reagent card and a chromatography reagent card, the corresponding upper card body 101 and lower card body 102 should be prepared first. For the new upper card body 101 (permeation reagent card), align the positioning groove 112 on its bottom surface with the connecting block 110, so that the support shaft 111 on the connecting block 110 is aligned with the shaft hole 113 on the inner wall of the positioning groove 112. Then, insert the support shaft 111 into the shaft hole 113. Since the shaft hole 113 is a blind hole and its depth is greater than the length of the support shaft 111, the support shaft 111 can be securely installed in the shaft hole 113. Similarly, for the new lower card body 102 (chromatographic reagent card), align the positioning groove 112 on its top surface with the other side of the connecting block 110, so that the other set of support shafts 111 on the connecting block 110 are aligned with and inserted into the shaft holes 113 on the inner wall of the positioning groove 112 of the lower card body 102, completing the installation of the new combination. This design makes reagent card replacement very convenient, requiring no complicated tools or operations, greatly improving the flexibility and efficiency of testing. Moreover, during use, whether in the snap-fit ​​or open state, the connecting block 110 can be well hidden inside the upper card body 101 and the lower card body 102, ensuring the overall aesthetics and stability, and avoiding potential damage or interference with testing operations due to the exposed connecting block 110. At the same time, since both the upper card body 101 and the lower card body 102 are elongated, the overall structure remains compact and easy to store and carry after installing different types of reagent cards, making it suitable for various testing scenarios.

[0024] In some embodiments, please refer to Figure 2 and Figure 7 The connecting block 110 has a notch 115, which is located near the support shaft 111. In this embodiment, the notch 115 is formed on the connecting block 110 and near the support shaft 111. At least one notch 115 is formed on the inner side of the support shaft 111 on the same side of the connecting block 110. The connecting block 110 is a plastic part, and the notch 115 provides space for plastic deformation at the connection between the support shaft 111 and the connecting block 110, while reducing the force required for the operator to drive the support shaft 111 out of the shaft hole 113. The support shaft 111 and the connecting block 110 are integrally manufactured by injection molding.

[0025] In some embodiments, please refer to Figure 1 and Figure 2The upper clamping body 101 has a locking post 116 on its bottom surface, and the lower clamping body 102 has a locking groove 117 on its top surface that matches the locking post 116. The locking post 116 and the locking groove 117 are interference-fitted. In this embodiment, the locking post 116 is fixedly installed on the bottom surface of the upper clamping body 101. The locking post 116 is cylindrical and has a rounded top surface. The locking post 116 is located at the end of the upper clamping body 101 away from the connecting block 110. The locking groove 117 is formed on the top surface of the lower clamping body 102. The locking groove 117 matches the locking post 116, and the locking groove 117 and the locking post 116 are interference-fitted, so that the locking post 116 remains relatively fixed in the locking groove 117, improving the firmness of the connection when the upper clamping body 101 and the lower clamping body 102 are in the snap-fit ​​state.

[0026] In some embodiments, please refer to Figure 1 and Figure 2 The lower clamping body 102 has a locking post 116 on its top surface, and the upper clamping body 101 has a locking groove 117 on its bottom surface that matches the locking post 116. The locking post 116 and the locking groove 117 are interference-fitted. In this embodiment, the locking post 116 is fixedly installed on the top surface of the lower clamping body 102. The locking post 116 is cylindrical and its top surface is arc-shaped. The locking post 116 is located at the end of the lower clamping body 102 away from the connecting block 110. The locking groove 117 is formed on the bottom surface of the upper clamping body 101. The locking groove 117 matches the locking post 116, and the locking groove 117 and the locking post 116 are interference-fitted, so that the locking post 116 remains relatively fixed in the locking groove 117, improving the firmness of the connection when the upper clamping body 101 and the lower clamping body 102 are in the snap-fit ​​state. It should be noted that: the upper card body 101 of this application is provided with both a card receiving post 116 and a card slot 117. The card receiving post 116 and the card slot 117 are symmetrically arranged on the upper card body 101. The lower card body 102 is provided with a card slot 117 and a card receiving post 116 that are adapted to the card receiving post 116 and the card slot 117 on the upper card body 101.

[0027] In some embodiments, please refer to Figure 1 and Figure 3 The top openings of the first sample application hole 105 and / or the clearance hole 107 are provided with guide rounded corners 118. In this embodiment, when the upper card body 101 and the lower card body 102 are in the snap-fit ​​state, the first sample application hole 105 and the clearance hole 107 are exposed. By providing guide rounded corners 118 at the top openings of both the first sample application hole 105 and the clearance hole 107, the overall aesthetics can be improved, the convenience of sample application can be enhanced, drug residue can be reduced, and stress concentration at the orifice can be avoided. Rounded corners can reduce the phenomenon of liquid sticking to the orifice wall, ensuring that the sample fully enters the reaction zone; right angles are prone to cracking during injection molding, while rounded corners (R corners) can disperse stress and improve structural strength; the rounded corner design is more suitable for the oblique sample application angle of pipette tips or droppers (45° is recommended), reducing operational errors.

[0028] In some embodiments, please refer to Figure 2 and Figure 6 The top opening of the second sample application hole 108 and / or the second detection window 109 is provided with a guide angle 119. In this embodiment, providing a guide angle 119 (typically 45°) at the top opening of the second sample application hole 108 is a key design feature to optimize the sample application operation, which can significantly improve liquid flow efficiency and detection accuracy. The maximum outer diameter of the top of the second sample application hole 108 is greater than or equal to the bottom outer diameter of the clearance hole 107, thereby ensuring that the sample passing through the clearance hole 107 can completely fall into the second sample application hole 108. Providing a guide angle 119 at the top opening of the second detection window 109 serves two purposes: firstly, to avoid stress concentration at the second detection window 109, and secondly, to increase the outer contour size of the opening of the second detection window 109, facilitating observation of the test strip 104 inside the second detection window 109.

[0029] In some embodiments, please refer to Figure 5 Multiple first detection windows 106 are arranged along the length of the upper test strip 103. In this embodiment, the length of the upper test strip 103 is consistent with the length of the upper card body 101. Since the upper test strip 103 uses the permeation method, there will be a control line and a detection line on the upper test strip 103. The detection of the target substance is determined by judging the color intensity of the control line and the detection line. Both the control line and the detection line are arranged along the length of the upper test strip 103. Therefore, three first detection windows 106 are opened on the bottom surface of the upper card body 101. The three first detection windows 106 are evenly arranged along the length of the upper card body 101, which can display multiple areas along the length of the control line and the detection line.

[0030] In some embodiments, please refer to Figure 2 The first detection window 106 and the second detection window 109 are vertically aligned. In this embodiment, the outer contours of the upper card body 101 and the lower card body 102 are consistent and vertically aligned. While the clearance hole 107 is vertically aligned with the second sample dispensing hole 108, the first detection window 106 and the second detection window 109 are also vertically aligned, thereby making reasonable use of the space of the upper card body 101 and the lower card body 102, making the structure on the upper card body 101 and the lower card body 102 more compact, and minimizing the external dimensions of the foldable reagent card of this application.

[0031] In some embodiments, please refer to Figure 1 The outer side walls of the upper card body 101 and / or the lower card body 102 are provided with anti-slip textures 120. In this embodiment, both side walls along the length of the upper card body 101 and the lower card body 102 are provided with anti-slip textures 120. The anti-slip textures 120 can increase the friction when the operator applies force to the upper card body 101 and the lower card body 102, making it easier for the operator to open the upper card body 101 and the lower card body 102.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A foldable reagent card, characterized in that, include: The upper card body and the lower card body are fastened together, and the upper test strip and the lower test strip are respectively installed in the upper card body and the lower card body; The upper card body has a first sample application hole, a first detection window, and a clearance hole. The first sample application hole and the first detection window are located on the upper and lower sides of the upper test strip, respectively. The clearance hole runs through the upper card body from top to bottom and is offset from the upper test strip. The top surface of the lower card body has a second sample application hole and a second detection window corresponding to the lower test strip. The second sample application hole is directly opposite the clearance hole.

2. A foldable reagent card as described in claim 1, characterized in that, The upper clamping body and the lower clamping body are hinged together by a connecting block, and the connecting block is provided with a support shaft that is rotatably connected to the upper clamping body and the lower clamping body.

3. A foldable reagent card as described in claim 2, characterized in that, The connecting block has a notch, which is close to the support shaft.

4. A foldable reagent card as described in claim 1, characterized in that, The bottom surface of the upper card body is provided with a snap-fit ​​post, and the top surface of the lower card body is provided with a snap-fit ​​groove that is adapted to the snap-fit ​​post. The snap-fit ​​post and the snap-fit ​​groove are interference fit.

5. A foldable reagent card as described in claim 1, characterized in that, The top surface of the lower card body is provided with a locking post, and the bottom surface of the upper card body is provided with a locking groove that is adapted to the locking post. The locking post and the locking groove are interference fit.

6. A foldable reagent card as described in claim 1, characterized in that, The top opening of the first sample feeding hole and / or the relief hole is provided with a guide radius.

7. A foldable reagent card as described in claim 1, characterized in that, The top opening of the second sample application port and / or the second detection window is provided with a guide bevel.

8. A foldable reagent card as described in claim 1, characterized in that, The number of the first detection windows is multiple, and they are arranged along the length of the upper test strip.

9. A foldable reagent card as described in claim 1, characterized in that, The first detection window and the second detection window are vertically aligned.

10. A foldable reagent card as described in claim 1, characterized in that, The outer side wall of the upper card body and / or the lower card body is provided with anti-slip texture.

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