A reagent card positioning device for a fluorescence immunoassay analyzer

Abstract

This utility model relates to the field of fluorescence immunoassay analyzer technology, specifically a reagent card positioning device for a fluorescence immunoassay analyzer. It includes an instrument assembly, a reagent card assembly, and a positioning assembly. The instrument assembly includes an analyzer body, the reagent card assembly includes a reagent card body, and the positioning assembly includes a linkage slide plate and a handle. A groove is formed on the inner side of the front end of the analyzer body, and a positioning inner post is formed on the inner side of the analyzer body. A reagent hole is provided on the inner side of the upper part of the reagent card body, and a positioning inner hole is formed on the inner side of the front wall of the reagent card body. One end of the linkage slide plate is connected to a positioning insertion rod. The analyzer body is designed for fluorescence immunoassay analysis of samples within the reagent card body. The elastic buffer pad absorbs the impact force when the reagent card body is inserted, preventing sample splashing or displacement due to collision within the reagent hole.

Description

Technical Field

[0001] This utility model relates to the field of fluorescence immunoassay analyzer technology, specifically a reagent card positioning device for a fluorescence immunoassay analyzer. Background Technology

[0002] In the fields of modern medical diagnostics and biological detection, fluorescence immunoassay analyzers are widely used in clinical testing, food safety monitoring, and environmental pollutant detection due to their high sensitivity and rapid response. This instrument achieves quantitative analysis of target substances by detecting the reaction signal between the sample and the fluorescent label on the reagent card. Precise positioning of the reagent card is a crucial prerequisite for ensuring the accuracy and repeatability of the test results.

[0003] Currently, the reagent card positioning devices of existing fluorescence immunoassay analyzers have the following main shortcomings: First, most positioning structures use a single slot or guide rail for limiting, which can easily lead to lateral offset or depth error during reagent card insertion, resulting in the reagent hole on the reagent card not being accurately aligned with the instrument's optical detection module, affecting the stability of fluorescence signal acquisition; Second, the positioning and locking mechanism is not reliable enough. During instrument operation, the reagent card may undergo slight displacement due to vibration or mechanical movement, leading to deviations in the detection results. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a reagent card positioning device for a fluorescence immunoassay analyzer. This device solves the problems that arise when a single card slot or guide rail is used for positioning, leading to lateral offset or depth error during reagent card insertion. This results in the reagent hole on the reagent card not being accurately aligned with the instrument's optical detection module, affecting the stability of fluorescence signal acquisition. Furthermore, during instrument operation, the reagent card may undergo slight displacement due to vibration or mechanical movement, causing deviations in the detection results. The device solves the problems of low positioning accuracy, complex operation, and poor compatibility through a three-level positioning system consisting of lateral guidance, vertical positioning, and locking mechanisms.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a reagent card positioning device for a fluorescence immunoassay analyzer, comprising an instrument assembly, a reagent card assembly, and a positioning assembly. The instrument assembly includes an analyzer body, the reagent card assembly includes a reagent card body, and the positioning assembly includes a linkage slide plate and a handle. A groove is provided on the inner side of the front end of the analyzer body, and a positioning inner post is provided on the inner side of the analyzer body. A reagent hole is provided on the inner side of the upper part of the reagent card body. Side grooves are provided on one end wall of the reagent card body, and a positioning inner hole is provided on the inner side of the front end wall of the reagent card body. A positioning slot is provided at the end of the reagent card body away from the side grooves. A positioning rod is connected to one end of the linkage slide plate, and a compression spring is connected to the end of the linkage slide plate away from the positioning rod.

[0006] The beneficial effects of this utility model are as follows: the elastic buffer pad is used to absorb the impact force when the reagent card body is inserted, so as to avoid the sample in the reagent hole from splashing or displacing due to collision. The positioning rod is inserted into the positioning slot to achieve the final locking of the reagent card body in the groove. After the reagent card body is inserted, the handle is released to achieve the automatic reset and locking of the positioning rod.

[0007] To absorb the impact force when the reagent card body is inserted, and to prevent the sample in the reagent well from splashing or shifting due to collision:

[0008] As a further improvement to the above technical solution: the main body of the analyzer integrates a display screen, a power switch, and a charging port, and has an optical detection module inside that corresponds to the position of the reagent hole. The bottom of the groove is covered with a silicone elastic buffer pad with a thickness of 2mm.

[0009] The beneficial effects of this improvement are as follows: the analyzer body is designed for fluorescent immunoassay of samples within the reagent card body, and the elastic buffer pad is designed to absorb the impact force when the reagent card body is inserted, preventing the sample in the reagent well from splashing or shifting due to collision.

[0010] To achieve lateral guidance and initial horizontal positioning during the insertion of the reagent card body:

[0011] As a further improvement to the above technical solution: the size of the side slide groove matches the size of the positioning side post, the positioning side post is set along the depth direction of the groove opening, and the side slide groove and the positioning side post adopt a clearance fit.

[0012] The beneficial effects of this improvement are: when the reagent card body is inserted into the groove, the side slide slides along the positioning side post, realizing lateral guidance and preliminary horizontal positioning during the insertion process of the reagent card body.

[0013] To automatically guide the inner column into the positioning hole and complete the vertical positioning of the reagent card body:

[0014] As a further improvement to the above technical solution: two positioning inner holes are provided, the size of the positioning inner holes matches the size of the positioning inner post, and the positioning inner post is installed on the inner wall of the groove opening.

[0015] The beneficial effects of this improvement are as follows: the reagent card body slides along the positioning side post through the side slide groove into the groove opening. When the reagent card body is inserted to the end along the positioning side post, the positioning inner post is automatically guided into the positioning inner hole, thus completing the vertical positioning of the reagent card body.

[0016] The hemispherical end of the positioning pin is designed to reduce insertion resistance and improve positioning stability.

[0017] As a further improvement to the above technical solution: three positioning slots are equally spaced on the inner side of the reagent card body, the size of the positioning slots matches the size of the positioning rod, and the end of the positioning rod is a hemispherical structure.

[0018] The beneficial effects of this improvement are as follows: by opening the positioning slot, a groove is provided for the insertion of the positioning rod, and by inserting the positioning rod into the positioning slot, the reagent card body is finally locked in the groove. The end of the positioning rod is a hemispherical structure, which is used to reduce insertion resistance and improve positioning stability.

[0019] To ensure the positioning lever automatically resets and locks after the reagent card body is inserted and the handle is released:

[0020] As a further improvement to the above technical solution: the handle is a U-shaped structure, the outer surface of the handle is provided with anti-slip texture, the handle is slidably connected to the analyzer body through the guide hole groove, one end of the handle passes through the hole groove and extends to the inner side of the mounting side groove, and the handle is connected to the end of the linkage slide away from the positioning rod by bolts.

[0021] The beneficial effects of this improvement are as follows: When inserting the reagent card assembly, hold the handle and pull it away from the analyzer body. As the handle moves, it drives the positioning rod to move through the linkage slide plate. Pulling the handle compresses the spring of the linkage slide plate, causing the positioning rod to exit the groove. After the reagent card body is inserted, release the handle to achieve automatic reset and locking of the positioning rod.

[0022] In order to use the positioning pin for the third step of positioning the reagent card body:

[0023] As a further improvement to the above technical solution: the end of the positioning rod away from the linkage slide plate passes through the slot and extends to the inside of the groove. Linear guide rail slider pairs are installed on both sides of the linkage slide plate. The guide rail is fixed to the inner wall of the mounting side groove by countersunk screws. The slider and the linkage slide plate are integrally formed.

[0024] The beneficial effects of this improvement are as follows: after the positioning rod moves away from the groove opening under the action of the linkage slide, and the reagent card body is fully inserted into the groove opening, the handle is gradually released, and the positioning rod is used for the third step of positioning the reagent card body. The guide rail slider structure ensures the linear motion accuracy of the linkage slide, so that the positioning rod is accurately inserted into the positioning slot.

[0025] In order to compress the spring and release its elastic potential energy, the drive slide plate will move the positioning rod to reset:

[0026] As a further improvement to the above technical solution: one end of the compression spring is connected to the linkage slide plate, and the end of the compression spring away from the linkage slide plate is connected to the inner wall of the mounting side groove.

[0027] The beneficial effects of this improvement are as follows: when the linkage slide moves under the action of the handle, the compression spring undergoes elastic deformation. When the external force is removed, the compression spring releases its elastic potential energy, driving the linkage slide to reset the positioning rod. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the reagent card body of this utility model when in use.

[0030] Figure 3 This is a three-dimensional structural diagram of the reagent card body of this utility model.

[0031] Figure 4 This is a top view cross-sectional structural diagram of the main body of the analyzer of this utility model.

[0032] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.

[0033] Figure 6 for Figure 4 A magnified structural diagram at point B in the middle.

[0034] Figure 7 This is a cross-sectional view of the main body of the reagent card of this utility model.

[0035] In the diagram: 1. Instrument assembly; 11. Analyzer body; 12. Groove; 13. Positioning inner column; 14. Positioning side column; 15. Mounting side groove; 16. Elastic buffer pad; 2. Reagent card assembly; 21. Reagent card body; 22. Reagent hole; 23. Side slide groove; 24. Positioning inner hole; 25. Positioning slot; 3. Positioning component; 31. Linkage slide plate; 32. Positioning rod; 33. Compression spring; 34. Handle. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0037] like Figure 1-7As shown, a reagent card positioning device for a fluorescence immunoassay analyzer includes an instrument assembly 1, a reagent card assembly 2, and a positioning assembly 3. The instrument assembly 1 includes an analyzer body 11, the reagent card assembly 2 includes a reagent card body 21, and the positioning assembly 3 includes a linkage slide plate 31 and a handle 34. A groove 12 is formed on the inner side of the front end of the analyzer body 11, and a positioning inner post 13 is formed on the inner side of the analyzer body 11. A reagent hole 22 is provided on the inner side of the upper part of the reagent card body 21, and side grooves 23 are formed on one end wall of the reagent card body 21. The analyzer body 11 has a positioning hole 24 on its inner side. A positioning slot 25 is located at the end of the reagent card body 21 away from the side slide groove 23. A positioning rod 32 is connected to one end of the linkage slide plate 31, and a compression spring 33 is connected to the end of the linkage slide plate 31 away from the positioning rod 32. The analyzer body 11 integrates a display screen, a power switch, and a charging port. An optical detection module corresponding to the position of the reagent hole 22 is located inside. The bottom of the recess 12 is covered with a 2mm thick silicone elastic buffer pad 16. The analyzer body 11 is designed for fluorescent immunoassay analysis of samples within the reagent card body 21. The elastic buffer pad 16 is used to absorb the impact force when the reagent card body 21 is inserted, preventing the sample in the reagent hole 22 from splashing or shifting due to collision. The size of the side slide groove 23 matches the size of the positioning side post 14. The positioning side post 14 is set along the depth direction of the groove opening 12. The side slide groove 23 and the positioning side post 14 are fitted with a clearance. When the reagent card body 21 is inserted into the groove opening 12, the side slide groove 23 slides along the positioning side post 14, realizing lateral guidance and preliminary horizontal positioning of the reagent card body 21 during the insertion process. There are two positioning inner holes 24. The size of the positioning inner hole 24 matches the size of the positioning inner post 13, which is installed on the inner wall of the groove 12. The reagent card body 21 slides along the positioning side post 14 into the groove 12 via the side sliding groove 23. When the reagent card body 21 is inserted to the end along the positioning side post 14, the positioning inner post 13 automatically enters the positioning inner hole 24, completing the vertical positioning of the reagent card body 21. Three positioning slots 25 are equally spaced on the inner side of the reagent card body 21. The size of the positioning slots 25 matches the size of the positioning rod 32. The end of the positioning rod 32 is a hemispherical structure.The positioning slot 25 is provided for the insertion of the positioning rod 32. The positioning rod 32 is inserted into the positioning slot 25, thus locking the reagent card body 21 within the recess 12. The end of the positioning rod 32 is hemispherical to reduce insertion resistance and improve positioning stability. The handle 34 is U-shaped, with anti-slip texture on its outer surface. The handle 34 is slidably connected to the analyzer body 11 via a guide slot, with one end of the handle 34 extending through the slot. The handle 34 is bolted to the end of the linkage slide plate 31 away from the positioning rod 32, inside the mounting side groove 15. When inserting the reagent card assembly 2, grasp the handle 34 and pull it away from the analyzer body 11. As the handle 34 moves, it drives the positioning rod 32 to move via the linkage slide plate 31. Pulling the handle 34 compresses the spring 33 of the linkage slide plate 31, causing the positioning rod 32 to exit the groove 12. After the reagent card body 21 is inserted, release the handle 34 to achieve automatic reset and locking of the positioning rod 32. The positioning rod 32, at one end away from the linkage slide plate 31, passes through the slot and extends to the inside of the recess 12. Linear guide rail slider pairs are installed on both sides of the linkage slide plate 31. The guide rails are fixed to the inner wall of the mounting side groove 15 by countersunk screws. The sliders are integrally formed with the linkage slide plate 31. After the positioning rod 32 moves away from the recess 12 under the action of the linkage slide plate 31, and the reagent card body 21 is fully inserted into the recess 12, the handle 34 is gradually released. The positioning rod 32 is then used for the third step of positioning the reagent card body 21. The guide rail slider structure ensures the linear motion accuracy of the linkage slide plate 31, allowing the positioning rod 32 to accurately insert into the positioning slot 25. One end of the compression spring 33 is connected to the linkage slide plate 31, and the end of the compression spring 33 away from the linkage slide plate 31 is connected to the inner wall of the mounting side groove 15. When the linkage slide plate 31 moves under the action of the handle 34, the compression spring 33 undergoes elastic deformation. When the external force is removed, the compression spring 33 releases its elastic potential energy, driving the linkage slide plate 31 to reset the positioning rod 32.

[0038] The working principle of this utility model is as follows: During use, confirm that the analyzer body 11 is powered on and check the equipment status on the display screen. At this time, the positioning rod 32 is extended under the action of the compression spring 33, partially inserted into the groove 12. Hold the handle 34 and pull it away from the analyzer body 11. Since the handle 34 is fixedly connected to the linkage slide plate 31 by bolts, and linear guide rail slider pairs are installed on both sides of the linkage slide plate 31, its movement is stable and smooth. This operation drives the linkage slide plate 31 to compress the spring 33, causing the positioning rod 32 to... 2. Completely withdraw the reagent card from the recess 12 to make room for the reagent card insertion. Hold the reagent card body 21 and align the side groove 23 on its side wall with the positioning side post 14 inside the recess 12. Utilize the gap between the side groove 23 and the positioning side post 14 to slowly push the reagent card body 21 along the depth direction of the recess 12. During this process, the positioning side post 14 provides lateral guidance for the reagent card body 21, completing the initial horizontal positioning of the reagent card. Continue pushing the reagent card body 21 until it is fully inserted along the positioning side post 14. When the reagent card body 21 is inserted, the positioning inner post 13 on the inner wall of the groove 12 automatically aligns with the positioning inner hole 24 on the front end of the groove 12. With the precise cooperation of the two positioning inner posts 13 and the positioning inner hole 24, the reagent card body 21 is precisely positioned in the vertical direction, ensuring that the reagent hole 22 corresponds precisely with the optical detection module inside the analyzer body 11. When the handle 34 is released, the compression spring 33 pushes the linkage slide plate 31 to reset due to the restoring force generated by the elastic deformation, which drives the positioning rod 32 to move towards the groove 12. The hemispherical structure at the end of the positioning rod 32 precisely cooperates with the positioning slot 25 on the reagent card body 21 and is inserted into the three positioning slots 25, completing the final locking of the reagent card body 21 in the groove 12 and preventing displacement during the detection process. The detection program is started through the display screen of the analyzer body 11. The optical detection module performs fluorescence immunoassay on the sample in the reagent hole 22. After the detection is completed, the handle 34 is pulled again to make the positioning rod 32 exit the positioning slot 25, and the reagent card body 21 can be taken out from the groove 12, completing a complete operation process.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A reagent card positioning device of a fluorescent immunoassay analyzer, comprising an instrument assembly (1), a reagent card assembly (2), a positioning assembly (3), the instrument assembly (1) comprising an analyzer main body (11), the reagent card assembly (2) comprising a reagent card main body (21), the positioning assembly (3) comprising a linkage sliding plate (31), a handle (34), characterized in that: The analyzer body (11) has a groove (12) on the inner side of its front end, a positioning inner post (13) on the inner side of its inner side, a reagent hole (22) on the inner side of the upper part of the reagent card body (21), a side groove (23) on one end wall of the reagent card body (21), a positioning inner hole (24) on the inner side of the front wall of the reagent card body (21), a positioning slot (25) on the end of the reagent card body (21) away from the side groove (23), a positioning rod (32) on one end of the linkage slide plate (31), and a compression spring (33) on the end of the linkage slide plate (31) away from the positioning rod (32).

2. The reagent card positioning device of a fluorescent immunoassay analyzer according to claim 1, characterized in that: The analyzer body (11) integrates a display screen, a power switch, and a charging port. It has an optical detection module inside that corresponds to the position of the reagent hole (22). The bottom of the groove (12) is covered with a silicone elastic buffer pad (16) with a thickness of 2mm.

3. The reagent card positioning device of a fluorescent immunoassay analyzer according to claim 1, characterized in that: The dimensions of the side groove (23) are matched with the dimensions of the positioning side post (14). The positioning side post (14) is set along the depth direction of the groove opening (12). The side groove (23) and the positioning side post (14) are fitted with a clearance.

4. The reagent card positioning device of a fluorescent immunoassay analyzer according to claim 1, characterized in that: There are two positioning inner holes (24). The size of the positioning inner holes (24) matches the size of the positioning inner post (13). The positioning inner post (13) is installed on the inner wall of the groove opening (12).

5. The reagent card positioning device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: The reagent card body (21) has three positioning slots (25) evenly spaced on its inner side. The size of the positioning slots (25) matches the size of the positioning rod (32). The end of the positioning rod (32) is a hemispherical structure.

6. The reagent card positioning device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: The handle (34) has a U-shaped structure. The outer surface of the handle (34) is provided with anti-slip texture. The handle (34) is slidably connected to the analyzer body (11) through the guide hole groove. One end of the handle (34) passes through the hole groove and extends to the inside of the mounting side groove (15). The handle (34) is connected to the end of the linkage slide plate (31) away from the positioning rod (32) by bolts.

7. The reagent card positioning device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: The end of the positioning rod (32) away from the linkage slide plate (31) passes through the slot and extends to the inside of the groove opening (12). Linear guide rail slider pairs are installed on both sides of the linkage slide plate (31). The guide rail is fixed to the inner wall of the mounting side groove (15) by countersunk screws. The slider and the linkage slide plate (31) are integrally formed.

8. The reagent card positioning device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: One end of the compression spring (33) is connected to the linkage slide plate (31), and the other end of the compression spring (33) away from the linkage slide plate (31) is connected to the inner wall of the mounting side groove (15).

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