A multi-channel fluorescence immunoassay analyzer

Abstract

The present invention discloses a multi-channel fluorescent immunoassay analyzer, which belongs to the field of clinical detection medical technology; it includes: an incubation reaction component including a rotatable incubation disk and a holder for inserting a reagent card, a plurality of holders are arranged around the incubation disk and fixedly connected to the incubation disk; a card pushing component including a card pushing plate that can move along the radial direction of the incubation disk, the card pushing plate is suspended above the incubation disk through a bracket, so as to push out the reagent card from the holder; a rotating component including a rotatable conversion tank body, the conversion tank body is arranged relative to the moving direction of the card pushing plate, so as to receive the reagent card and switch the orientation of the reagent card; a detection component including a slideway and a detector arranged relative to the slideway, one end of the slideway is connected to the outside world, and the other end of the slideway is docked with the conversion tank body; an advance and retreat card component including an advance and retreat card pushing plate that can move back and forth along the extension direction of the slideway, and the advance and retreat card pushing plate can push the reagent card in and out of the slideway through the conversion tank body. The present invention can improve detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of clinical detection medical treatment, and in particular to a multi-channel fluorescence immunoassay analyzer. Background Art

[0002] The existing fluorescent immunoassay analyzers are mainly divided into two categories: single-channel and multi-channel. Both types of products have their own advantages and disadvantages during use. Customers can choose the appropriate instrument based on actual needs, functions and cost budget.

[0003] Single channel: Single channel equipment requires manual operation and lacks constant temperature control. It is impossible to detect multiple items of a single sample or detect multiple samples simultaneously. At the same time, when the external environment changes, the test results will also vary greatly.

[0004] Multi-channel: in straight line or turntable configuration.

[0005] Linear type equipment: The detection component moves in the XY direction on the guide rail to detect the reagent card. The measurement position is prone to slight deviations due to the driving accuracy of the drive motor, which affects the accuracy, repeatability and stability of the measurement results. Although the linear type increases the number of channels, it is limited in the context of miniaturized equipment and still cannot meet high-throughput requirements when there are many samples.

[0006] Turntable structure equipment: The detection component is fixed inside the instrument, and the reagent card rotates with the rotating disk; when testing, the reagent card to be tested is rotated to the test position. During operations such as card withdrawal and testing, other actions cannot be performed simultaneously, which affects the overall inspection efficiency. Summary of the invention

[0007] In view of this, it is necessary to provide a multi-channel fluorescence immunoassay analyzer to solve the problem of low testing efficiency of the existing rotating disk analyzer.

[0008] The present invention provides a multi-channel fluorescence immunoassay analyzer, comprising:

[0009] An incubation reaction component, the incubation reaction component comprises a rotatable incubation tray and a holder for inserting a reagent card, a plurality of the holders are arranged around the incubation tray and fixedly connected to the incubation tray;

[0010] A card pushing assembly, the card pushing assembly comprising a card pushing plate movable along the radial direction of the incubation tray, the card pushing plate being suspended above the incubation tray through a bracket to push the reagent card out of the card holder;

[0011] A rotating assembly, the rotating assembly comprising a rotatable conversion slot body, the conversion slot body being arranged relative to the moving direction of the card pushing plate to receive the reagent card and switch the orientation of the reagent card;

[0012] A detection component, the detection component includes a slide and a detector arranged relative to the slide, one end of the slide is connected to the outside, and the other end of the slide is connected to the conversion tank body;

[0013] The card advance and retreat assembly includes an advance and retreat card push plate that can move back and forth along the extension direction of the slideway, and the advance and retreat card push plate can push the reagent card in and out of the slideway through the conversion slot.

[0014] Furthermore, a rotation drive unit is provided at the bottom of the incubation tray, and the rotation drive unit includes a rotating flange, a driving wheel, a first servo motor and a first photoelectric switch. The driving wheel is rotatably connected to the bottom plate through a bearing, and the upper and lower ends of the rotating flange are rotatably connected to the incubation tray and the driving wheel respectively. The first servo motor is arranged adjacent to the driving wheel, and the first servo motor is connected to the driving wheel through a transmission member. The first photoelectric switch is arranged relative to the driving wheel, and the first photoelectric switch is electrically connected to the first servo motor. The first servo motor can drive the driving wheel to rotate intermittently at a certain angle.

[0015] Furthermore, the holder includes a seat body and a spring sheet, the seat body is fixedly connected to the incubation tray, a slot for receiving the reagent card is formed between the seat bodies, and the spring sheet is arranged on one side of the seat body and opposite to the slot.

[0016] Furthermore, the top of the seat body is provided with edges protruding on two opposite sides, and the edges of the two seat bodies are arranged relative to one of the slots to form a constriction.

[0017] Furthermore, a barcode scanner is suspended on the incubation tray and arranged relative to the one card slot, and the scanner is fixedly connected to the frame via a bracket.

[0018] Furthermore, the card pushing assembly also includes a card pushing bracket connected to the frame and a first linear pushing unit, the card pushing plate is slidably connected to the card pushing bracket, the first linear pushing unit is arranged between the card pushing plate and the card pushing bracket, and the first linear pushing unit can drive the card pushing plate to move along the card pushing bracket.

[0019] Furthermore, the height of the slideway is consistent with the height of the conversion tank body, and the slideway and the conversion tank body are spaced apart and the spacing is less than half the length of the reagent card.

[0020] Furthermore, the rotating component also includes a rotating member and a second servo motor, the rotating member is fixedly connected to the conversion slot body, the second servo motor is arranged adjacent to the rotating member, the second servo motor is connected to the rotating member through a transmission member, and the second servo motor can drive the conversion slot body to rotate.

[0021] Furthermore, the advance and retreat card assembly also includes an advance and retreat card bracket connected to the frame and a second linear pushing unit, the advance and retreat card push plate is slidably connected to the advance and retreat card bracket, the second linear pushing unit is arranged between the advance and retreat card push plate and the advance and retreat card bracket, and the second linear pushing unit can drive the push plate to move along the advance and retreat card bracket.

[0022] Furthermore, the advance and retreat card push plate includes a connecting rod and a push rod slidably connected to the advance and retreat card bracket, the push rod is connected to the connecting rod, the push rod is arranged relative to the conversion slot body, and the push rod can be inserted into the inner cavity of the conversion slot body.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) A multi-channel fluorescent immunoassay analyzer of the present invention is provided with an incubation reaction component, which includes a rotatable incubation disk and a holder for inserting a reagent card. The incubation disk can intermittently rotate at a certain angle. A plurality of holders are arranged around the incubation disk and fixedly connected to the incubation disk. The angle between the holders is consistent with the intermittent rotation angle of the incubation disk. When the incubation disk drives the holders to rotate, each holder can form a work station relative to the outside of the incubation disk. The turntable-shaped incubation disk has a small size, good structural stability, high repeatability, and can undertake high-intensity detection work.

[0025] (2) A multi-channel fluorescent immunoassay analyzer of the present invention is provided with a card push assembly and a rotating assembly relative to the incubation disk, the detection assembly includes a slideway and a detector arranged relative to the slideway, one end of the slideway is connected to the outside, and the other end of the slideway is connected to the conversion tank body, and the card advance and retreat assembly includes an advance and retreat card push plate that can move back and forth along the extension direction of the slideway, and the advance and retreat card push plate can push the reagent card located in the conversion tank body into the slide, so that the detector can scan and detect the reagent card to obtain corresponding test data. The advance and retreat card push plate can also push the reagent card to be output from the other end of the slideway to complete the separation of the reagent card from the analyzer.

[0026] (3) A multi-channel fluorescent immunoassay analyzer of the present invention is provided with a detection component and an advance and retreat card component. The detection component includes a slideway and a detector arranged relative to the slideway. One end of the slideway is connected to the outside world, and the other end of the slideway is connected to the conversion tank body. The advance and retreat card component includes an advance and retreat card push plate that can move back and forth along the extension direction of the slideway. The advance and retreat card push plate can push the reagent card located in the conversion tank body into the slideway, so that the detector can scan and detect the reagent card to obtain corresponding test data. The advance and retreat card push plate can also push the reagent card to be output from the other end of the slideway, complete the separation of the reagent card and the analyzer, realize the automatic advance and retreat of the reagent card relative to the detector, and improve the automation of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the incubation reaction component in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the card holder in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the card pushing assembly in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the rotating assembly in the present invention;

[0033] Figure 6 It is a structural schematic diagram of the card entry and exit assembly in the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the detection component in the present invention;

[0035] In the figure, an incubation reaction component 100, an incubation tray 110, a card seat 120, a seat body 121, a spring piece 122, a card slot 123, an edge 124, a rotation drive unit 130, a rotating flange 131, an active wheel 132, a first servo motor 133, a first photoelectric switch 134, a barcode scanner 140, a bottom plate 150, a card pushing component 200, a card pushing plate 210, a card pushing bracket 220, a first linear push unit 230, a second photoelectric switch 240, a rotating component 300, a conversion slot body 310, a rotating member 320, a second servo motor 330, a detection component 400, a slide 410, a detector 420, an advance and retreat card component 500, an advance and retreat card pushing plate 510, a connecting rod 511, a push rod 512, an advance and retreat card bracket 520, a second linear push unit 530, a third photoelectric switch 540, and a bottom plate 150. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0037] See also Figures 1 to 7A multi-channel fluorescent immunoassay analyzer in this embodiment includes an incubation reaction component 100, a card pushing component 200, a rotation component 300, a detection component 400 and a card advancing and retreating component 500 that cooperate with each other.

[0038] The incubation reaction assembly 100 includes a rotatable incubation disk 110 and a holder 120 for inserting a reagent card. The incubation disk 110 can intermittently rotate at a certain angle. A plurality of holders 120 are arranged around the incubation disk 110 and fixedly connected to the incubation disk 110. The angle between the holders 120 is consistent with the intermittent rotation angle of the incubation disk 110. When the incubation disk 110 drives the holders 120 to rotate, each holder 120 can form a work station relative to the outside of the incubation disk 110. The turntable-shaped incubation disk 110 is small in size, has good structural stability, and high repeatability, and can undertake high-intensity detection work.

[0039] The card pushing assembly 200 includes a card pushing plate 210 that can move along the radial direction of the incubation tray 110. The card pushing plate 210 is suspended above the incubation tray 110 through a bracket. The card pushing plate 210 reciprocates along the radial direction at a station of the incubation tray 110 to push the test card rotated to this station on different card holders 120 out of the card holder 120. The rotating assembly 300 includes a rotatable conversion slot 310. The conversion slot 310 is set relative to the moving direction of the card pushing plate 210. The test card pushed by the card pushing plate 210 enters the conversion slot 310. The conversion slot 310 rotates a certain angle to change the direction of the test card, so that the test assembly 400 and the card advance and retreat assembly 500 do not need to be located in a straight line with the card pushing assembly 200, which can shorten the length of the analyzer in one direction and facilitate the storage and transportation of the analyzer.

[0040] The detection assembly 400 includes a slide 410 and a detector 420 arranged relative to the slide 410. One end of the slide 410 is connected to the outside world, and the other end of the slide 410 is connected to the conversion tank body 310. The advance and retreat card assembly 500 includes an advance and retreat card push plate 510 that can move back and forth along the extension direction of the slide 410. The advance and retreat card push plate 510 can push the reagent card located in the conversion tank body 310 into the slide 410, so that the detector 420 can scan and detect the reagent card to obtain corresponding test data. The advance and retreat card push plate 510 can also push the reagent card to be output from the other end of the slide 410, complete the separation of the reagent card and the analyzer, realize the automatic advance and retreat of the reagent card relative to the detector 420, and improve the automation of the instrument.

[0041] During use, the test solution card with reagent added is first installed on the card holder 120 of the incubation tray 110. Every time the incubation tray 110 rotates one angle, the card pusher 210 pushes a reagent card into the conversion slot 310. The conversion slot 310 rotates and docks with the slide 410. The advance and retreat card pusher 510 pushes the reagent card into the slide 410. The reagent card is detected by the detector 420 and finally pushed out of the slide 410.

[0042] See also Figure 2 , a rotation drive unit 130 is provided at the bottom of the incubation tray 110, and the rotation drive unit 130 includes a rotating flange 131, a driving wheel 132, a first servo motor 133 and a first photoelectric switch 134. The driving wheel 132 is rotatably connected to the base plate 150 through a bearing, and the bearing is specifically a thrust cylindrical roller bearing or a thrust needle roller bearing. One end of the bearing is connected to the base plate 150, and the other end of the bearing is connected to the driving wheel 132. The thrust cylindrical roller bearing or the thrust needle roller bearing can not only bear the axial load, but also ensure the normal rotation of the incubation tray 110. The cylindrical roller and the needle roller have a longer bearing distance, a larger bearing area, and a more stable rotation, so that when the incubation tray 110 rotates, the height difference between each cassette 120 and the base plate 150 is within a reasonable range, eliminating slight deviations, ensuring the accuracy of the docking of each component, and making the measurement result more accurate. The first servo motor 133 is arranged adjacent to the driving wheel 132, and the first servo motor 133 is connected to the driving wheel 132 through a transmission member, and the transmission member can be a gear, a synchronous belt or a transmission chain. The first photoelectric switch 134 is arranged relative to the driving wheel 132, and the first photoelectric switch 134 is electrically connected to the first servo motor 133. The first photoelectric switch 134 can sense the rotation of the driving wheel 132, and provide a basis for the first servo motor 133 to determine the angle of each intermittent rotation. In the specific implementation process, a baffle is provided at the bottom of the driving wheel 132, and the baffle is arranged equidistantly around the driving wheel 132. The baffle can intermittently trigger the first photoelectric switch 134, thereby controlling the operation of the first servo motor 133.

[0043] See also Figure 3 The card holder 120 includes a base 121 and a spring piece 122. The base 121 is fixedly connected to the incubation tray 110. A slot 123 for receiving the reagent card is formed between the base 121. The spring piece 122 is arranged on one side of the base 121 and arranged relative to the slot 123. The reagent card is inserted into the slot 123 from the radial direction of the incubation tray 110. Under the action of its own elastic force, the spring piece 122 presses against the reagent card to prevent the reagent card from abnormally escaping from both ends, thereby ensuring the normal incubation of the reagent card. As a further embodiment, the top of the base 121 is provided with edges 124 protruding on both sides relative to each other, and the edges 124 of the two bases 121 are arranged relative to a slot 123 to form a shrinkage. The shrinkage can prevent the reagent card from escaping from the disk surface of the incubation tray 110, thereby further ensuring the normal incubation of the reagent card.

[0044] It should be noted that: the outside of the incubation tray 110 is provided with a protective shell that is isolated from the outside world, and the top of the protective shell is provided with an opening that spans the entire incubation tray 110, exposing two workstations on the incubation tray 110, and a barcode scanner 140 is suspended on the incubation tray 110. The barcode scanner 140 is connected to the protective shell through a bracket. The scanning head of the barcode scanner 140 is set relative to a workstation and faces a card slot 123. The barcode scanner 140 can scan the reagent card exposed from the opening.

[0045] See also Figure 4 and Figure 5 The card pushing assembly 200 also includes a card pushing bracket 220 connected to the frame and a first linear pushing unit 230. The card pushing plate 210 is slidably connected to the card pushing bracket 220. The card pushing bracket 220 is provided with a linear track arranged parallel to the opening, and the card pushing plate 210 is slidably connected to the linear track. The first linear pushing unit 230 is arranged between the card pushing plate 210 and the card pushing bracket 220. The first linear pushing unit 230 can be a transmission belt, a transmission chain or a gear rack driven by a motor. A section of the transmission belt, the transmission chain or the gear rack is fixedly connected to the card pushing plate 210, driving the card pushing plate 210 to move back and forth along the linear track to push the reagent card in the card slot 123. The first linear pushing unit 230 can also be a linear motor, a cylinder, a hydraulic cylinder or an electric push rod 512. The card pushing plate 210 is connected to the moving end of the linear motor, cylinder, hydraulic cylinder or electric push rod 512, and the card pushing plate 210 moves back and forth along the linear track to push the reagent card in the card slot 123. In the specific implementation process, the bottom of the card pushing plate 210 is provided with a pushing portion extending into the card slot 123, the bottom end of the pushing portion is spaced from the disk surface of the incubation disk 110, and the side end of the pushing portion can abut against the reagent card to push the abutting card to move.

[0046] It should be noted that: a second photoelectric switch 240 is provided at both ends of the card pushing bracket 220, and the second photoelectric switch 240 is connected to the driving member of the first linear pushing unit 230. Once the second photoelectric switch 240 recognizes the approach of the card pushing plate 210, it will control the reverse operation of the driving member to control the reciprocating motion of the card pushing plate 210.

[0047] See also Figure 1 and Figure 5The rotating assembly 300 further includes a rotating member 320 and a second servo motor 330. The rotating member 320 is fixedly connected to the conversion tank body 310. The second servo motor 330 is disposed adjacent to the rotating member 320. The second servo motor 330 is connected to the rotating member 320 through a transmission member, and the second servo motor 330 can drive the conversion tank body 310 to rotate. In the specific implementation process, the rotating member 320 is a rotating disk, and the transmission member is specifically a transmission chain, a gear or a synchronous belt. The second servo motor 330 can drive the conversion tank body 310 to rotate 90°, thereby changing the orientation of the reagent card by 90 degrees.

[0048] The height of the slideway 410 is consistent with the height of the conversion cell body 310, and the slideway 410 and the conversion cell body 310 are spaced apart and the interval is less than half of the length of the reagent card. The reagent card pushed out from the conversion cell body 310 can be normally pushed into the conversion cell body 310. If the interval between the slideway 410 and the conversion cell body 310 is too small, the conversion cell body 310 will interfere with the slideway 410 when rotating, affecting the normal use of the device. When the interval between the slideway 410 and the conversion cell body 310 is greater than half of the length of the reagent card, the reagent card will fall out from the interval, making it impossible for the reagent card to enter the slideway 410.

[0049] See also Figure 6 The card advance and retreat assembly 500 also includes a card advance and retreat bracket 520 connected to the frame and a second linear push unit 530. The card advance and retreat push plate 510 is slidably connected to the card advance and retreat bracket 520. The card advance and retreat bracket 520 is provided with a linear track perpendicular to the card push bracket 220. The card advance and retreat push plate 510 is slidably connected to the linear track. The second linear push unit 530 is arranged between the card advance and retreat push plate 510 and the card advance and retreat bracket 520. The second linear push unit 530 can be a transmission belt, a transmission chain or a gear rack driven by a motor. A section of the transmission belt, the transmission chain or the gear rack is fixedly connected to the card advance and retreat push plate 510, driving the card advance and retreat push plate 510 to move back and forth along the linear track to push the reagent card in the conversion tank 310. The second linear push unit 530 can also be a linear motor, a cylinder, a hydraulic cylinder or an electric push rod 512. The card push plate 510 is connected to the moving end of a linear motor, a cylinder, a hydraulic cylinder or an electric push rod 512 , and the card push plate 510 moves back and forth along a linear track to push the reagent card in the conversion tank 310 .

[0050] As a further embodiment, the card advance and retreat push plate 510 includes a connecting rod 511 and a push rod 512 which are slidably connected to the card advance and retreat bracket 520. The push rod 512 is connected to the connecting rod 511. The push rod 512 is arranged relative to the conversion tank body 310, and the push rod 512 can be inserted into the inner cavity of the conversion tank body 310. In the specific implementation process, the third photoelectric switches 540 are respectively arranged at the two ends and the middle of the card advance and retreat bracket 520. The third photoelectric switches 540 are connected to the driving member of the second linear driving unit 530. When the card advance and retreat push plate 510 triggers the third photoelectric switches 540 at the two ends of the card advance and retreat bracket 520, the driving member will be controlled to run in reverse. Once the third photoelectric switch 540 located in the middle recognizes the approach of the card advance and retreat push plate 510, it will control the driving member for a period of time, so as to facilitate the detector 420 to scan and detect the reagent card.

[0051] Workflow: First, the test solution card with the reagent added is inserted into the card slot 123 of the incubation tray 110, and the incubation tray 110 rotates an angle under the drive of the rotation drive unit 130. Two reagent cards are exposed from the opening above the incubation tray 110, and the barcode scanner 140 scans the barcode of a reagent card and records it. Under the action of the first linear push unit 230, the card pusher 220 pushes a reagent card out of the card slot 123 and pushes it into the conversion tank body 310, and the conversion tank body 310 rotates 90° under the drive of the second servo motor 330, so that the conversion tank body 310 is docked with the slide 410. Under the action of the second linear push unit 530, the advance and retreat card push plate 510 pushes the reagent card into the slide 410, and then stops for a period of time. During this period of time, the detector 420 scans and detects the reagent card. Finally, the advance and retreat card push plate 510 pushes the reagent card out of the other side of the slide 410.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the present invention.

Claims

1. A multi-channel fluorescence immunoassay analyzer, characterized in that: include: An incubation reaction component, the incubation reaction component comprises a rotatable incubation tray and a holder for inserting a reagent card, a plurality of the holders are arranged around the incubation tray and fixedly connected to the incubation tray; A card pushing assembly, the card pushing assembly comprising a card pushing plate movable along the radial direction of the incubation tray, the card pushing plate being suspended above the incubation tray through a bracket to push the reagent card out of the card holder; A rotating assembly, the rotating assembly comprising a rotatable conversion slot body, the conversion slot body being arranged relative to the moving direction of the card pushing plate to receive the reagent card and switch the orientation of the reagent card; A detection component, the detection component includes a slide and a detector arranged relative to the slide, one end of the slide is connected to the outside, and the other end of the slide is connected to the conversion tank body; An advance and retreat card assembly, the advance and retreat card assembly comprising an advance and retreat card push plate that can reciprocate along the extension direction of the slide, the advance and retreat card push plate can push the reagent card in and out of the slide through the conversion slot; The rotating assembly further includes a rotating member and a second servo motor, the rotating member is fixedly connected to the conversion tank body, the second servo motor is disposed adjacent to the rotating member, the second servo motor is connected to the rotating member via a transmission member, and the second servo motor can drive the conversion tank body to rotate; The height of the slide is consistent with the height of the conversion tank body, and the slide and the conversion tank body are spaced apart and the interval is less than half the length of the reagent card; The card advance and retreat assembly also includes a card advance and retreat bracket connected to the frame and a second linear push unit, the card advance and retreat push plate is slidably connected to the card advance and retreat bracket, the second linear push unit is arranged between the card advance and retreat push plate and the card advance and retreat bracket, and the second linear push unit can drive the push plate to move along the card advance and retreat bracket; The advance and retreat card push plate includes a connecting rod and a push rod slidably connected to the advance and retreat card bracket, the push rod is connected to the connecting rod, the push rod is arranged relative to the conversion slot body, and the push rod can be inserted into the inner cavity of the conversion slot body; The third photoelectric switches are respectively arranged at the two ends and the middle of the advancing and retreating card bracket, and the third photoelectric switches are connected to the driving member of the second linear pushing unit.

2. A multi-channel fluorescence immunoassay analyzer according to claim 1, characterized in that: A rotation drive unit is provided at the bottom of the incubation tray, and the rotation drive unit includes a rotating flange, a driving wheel, a first servo motor and a first photoelectric switch. The driving wheel is rotatably connected to the bottom plate through a bearing, and the upper and lower ends of the rotating flange are rotatably connected to the incubation tray and the driving wheel respectively. The first servo motor is arranged adjacent to the driving wheel, and the first servo motor is connected to the driving wheel through a transmission member. The first photoelectric switch is arranged relative to the driving wheel, and the first photoelectric switch is electrically connected to the first servo motor. The first servo motor can drive the driving wheel to rotate intermittently at a certain angle.

3. A multi-channel fluorescence immunoassay analyzer according to claim 1, characterized in that: The holder includes a holder body and a spring piece. The holder body is fixedly connected to the incubation tray. A slot for receiving a reagent card is formed between the holder bodies. The spring piece is arranged on one side of the holder body and opposite to the slot.

4. A multi-channel fluorescence immunoassay analyzer according to claim 3, characterized in that: The top of the seat body is provided with edges protruding on two opposite sides, and the edges of the two seat bodies are arranged relative to one of the slots to form a constriction.

5. A multi-channel fluorescence immunoassay analyzer according to claim 4, characterized in that: A barcode scanner arranged opposite to the one card slot is suspended on the incubation tray, and the scanner is fixedly connected to the frame via a bracket.

6. A multi-channel fluorescence immunoassay analyzer according to claim 1, characterized in that: The card pushing assembly also includes a card pushing bracket connected to the frame and a first linear pushing unit, the card pushing plate is slidably connected to the card pushing bracket, the first linear pushing unit is arranged between the card pushing plate and the card pushing bracket, and the first linear pushing unit can drive the card pushing plate to move along the card pushing bracket.

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