Tray and immunochromatography analyzer

Abstract

The invention discloses a tray and an immunochromatography analyzer, and relates to the technical field of medical instruments, the tray comprises a tray rack and a clamping groove, the clamping groove comprises a clamping groove body, the cross section of the clamping groove body is of an oval structure, an opening is formed in the upper surface of the clamping groove body, and the opening is used for observing a window of a reagent card in the clamping groove body; the width of the interior of the card slot body is greater than the width of the reagent card, and the height of the interior of the card slot body is greater than the height of the reagent card; and the positioning assembly is arranged on the card slot body and can fix the reagent card in the card slot body. The tray based on the card slot and the immunochromatography analyzer can be adapted to reagent cards with different sizes, and can also be used for colloidal gold and fluorescence immunochromatography.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a tray and an immunochromatographic analyzer. Background Art

[0002] The immunochromatographic analyzer is a medical device based on the immunochromatographic principle and chemical analysis technology, which is used to detect and analyze molecular components such as proteins, hormones, and drugs in biological samples. The immune response part is carried out in the reagent card. After the reagent card is inserted into the card slot of the immunochromatographic analyzer, the detection system will measure the amount of the labeled substance by measuring optical density, fluorescence intensity, etc., thereby reflecting the amount of the molecule to be tested in the sample.

[0003] The existing solution makes the reagent card fit tightly with the card slot of the immunochromatographic analyzer so as to fix it in a specific position in the card slot. Therefore, it can only be adapted to reagent cards of a specific size and has a narrow scope of application. Summary of the invention

[0004] The purpose of the present invention is to provide a tray and an immunochromatographic analyzer to solve the problems existing in the above-mentioned prior art and to be adaptable to reagent cards of different sizes.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a pallet, comprising: a pallet frame, a pallet body is slidably provided on the pallet frame, the upper surface of the pallet body is a plane and fixedly provided with a card slot, the card slot and the pallet body are fixed by bonding, riveting, bolting, etc., a slide bar arranged along the length direction of the card slot is fixed on the pallet frame, a slider is fixedly provided at the bottom of the pallet body, and the slider is slidably sleeved on the slide bar; a spring is sleeved on the slide bar, one end of the spring abuts against the slider, and the other end abuts against the pallet frame; The card slot includes a card slot body and a positioning assembly, an upper surface of the card slot body is provided with an opening, and the opening is used as a viewing window for observing the reagent card in the card slot body; the width of the interior of the card slot body is greater than the width of the reagent card, and the height of the interior of the card slot body is greater than the height of the reagent card; The positioning component is arranged on the card slot body and can fix the reagent card in the card slot body; the positioning component is a vertical positioning component or a lateral positioning component, and the lateral positioning component includes a positioning clip, and the side walls on both sides of the card slot body are provided with symmetrically arranged clamping openings, and each of the clamping openings is provided with a positioning clip; one end of the positioning clip is movably arranged in the clamping opening, and the other end of the positioning clip is installed on the side wall of the card slot body through a torsion spring, and when the torsion spring is compressed, the end of the positioning clip can move horizontally to the side away from the axis of the card slot body.

[0006] Preferably, the vertical positioning assembly includes a ball head ejector pin, which includes a ball head and an elastic part, the elastic part is vertically fixed to the inner top of the slot body, and the ball head is installed on the bottom of the elastic part; a plurality of the ball head ejectors are evenly distributed on the outside of the opening, and the vertical positioning assembly can also adopt other structures as needed.

[0007] Preferably, the positioning assembly is a lateral positioning assembly, which includes a positioning clip. The side walls on both sides of the slot body are provided with symmetrically arranged clamping openings, and each of the clamping openings is provided with a positioning clip; one end of the positioning clip is movably arranged in the clamping opening, and the other end of the positioning clip is installed on the side wall of the slot body through a torsion spring. When the torsion spring is compressed, the end of the positioning clip can move horizontally to the side away from the axis of the slot body. The lateral positioning assembly can also adopt other structures as needed.

[0008] Preferably, the spacing between two adjacent positioning clips on the same side is 30 mm; and the spacing between the ends of the positioning clips symmetrically arranged on both sides of the slot body is 12 mm to 30 mm.

[0009] The present invention also provides a pallet, including a pallet frame, on which a pallet body is slidably mounted, the upper surface of the pallet body being a plane and fixedly provided with the above-mentioned slot; a pallet notch is formed on the end surface of one end of the pallet body.

[0010] Preferably, a sliding rod arranged along the length direction of the card slot is fixedly provided on the tray frame, and a slider is fixedly provided at the bottom of the tray body, and the slider is slidably mounted on the sliding rod; a spring is mounted on the sliding rod, one end of the spring abuts against the slider, and the other end abuts against an end of the tray frame close to the notch of the tray.

[0011] Preferably, a damper is provided at one end of the pallet rack away from the pallet notch, and the end of the telescopic rod of the damper is connected to the sliding block.

[0012] Preferably, a downwardly protruding positioner is fixedly provided at the bottom of the tray body, and the positioner can abut against an end of the tray frame close to the tray notch.

[0013] The present invention also provides an immunochromatographic analyzer, comprising a light source seat and the tray as described above; the light source seat is a conical structure with a hollow interior, a rectangular observation port is provided on the top of the light source seat, a camera is provided above the rectangular observation port, a filter is provided between the camera and the rectangular observation port, one side of the filter is mounted on a stepper motor, and the stepper motor can drive the filter to move horizontally to a position directly below the camera or away from the camera; visible light sources and ultraviolet light sources are arranged at intervals on the left and right inner walls of the light source seat; an inlet and outlet are provided at the bottom of the front and rear side walls of the light source seat, the tray is located below the light source seat, and the tray can drive the card slot and the reagent card to enter the light source seat from the inlet and outlet.

[0014] Preferably, the angles between the visible light source and the ultraviolet light source and the horizontal are both between 30° and 70°.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: The width and height of the card slot of the present invention are greater than the width and height of reagent cards of all sizes, so that it can be applied to reagent cards of different sizes. After the reagent card is inserted, a positioning component is used to fix the reagent card in the card slot body, and there is no restriction on the position of the viewing window of the reagent card, so that one analyzer can use reagent cards of different manufacturers, which greatly enriches the selection of reagent cards and test items. The design of the interval array of visible light source and ultraviolet light source and the design of the filter displacement driven by the stepping motor are adopted, so that the immunoassay analyzer of the present invention can perform both visible light immunochromatography analysis and fluorescent immunochromatography analysis, so that the effect of multiple functions of one machine can be achieved, which greatly facilitates the immunological test of families, health management institutions and primary medical institutions, and reduces the investment cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of one structure of the card slot of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 A top view of Figure 4 This is a schematic diagram of a second structure of the card slot of the present invention; Figure 5for Figure 4 The main view; Figure 6 for Figure 4 A top view of Figure 7 This is a schematic diagram of the structure of the tray of the present invention; Figure 8 for Figure 7 Left view of; Fig. 9 for Figure 7 A top view of Fig.10 for Figure 7 Bottom view of Fig.11 It is a schematic diagram of the overall structure of the immunochromatographic analyzer of the present invention; Fig.12 for Fig.11 The main view; Fig.13 for Fig.11 Right view of; Fig.14 for Fig.13 FF cross-sectional view.

[0018] In the figure: 1-tray body, 11-tray notch, 12-tray frame, 2-card slot body, 21-opening, 22-ball head ejector pin, 23-positioning clip, 24-torsion spring, 3-slide bar, 31-positioner, 4-spring, 5-damper, 6-reagent card, 61-viewing window, 7-light source seat, 71-visible light LED, 72-ultraviolet light LED, 73-rectangular observation port, 8-filter, 9-stepping motor, 10-camera. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide a tray and an immunochromatographic analyzer to solve the problems existing in the above-mentioned prior art and to be adaptable to reagent cards of different sizes.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The principle of immunochromatography is to fix specific antibodies to a certain strip of the chromatographic membrane (usually nitrocellulose membrane). When the sample is added from one end of the membrane, the sample will move forward along the membrane due to the chromatography effect. When it moves to the area where the antibody is fixed, the corresponding antigen in the sample will specifically bind to the antibody. If certain signal substances are used, such as colloidal gold particles, latex microspheres or fluorescent microspheres, the strip can show a certain signal, thereby realizing the specific immunodetection of the antigen in the sample.

[0023] In specific applications, the immune response part is carried out in the reagent card / kit. The molecule to be tested in the sample binds to the specific antibody (labeled antibody) labeled in the reagent card / kit to form a complex. The complex is captured by the antibody (capture antibody) on the detection line (T line) on the chromatographic membrane through chromatography. These antibodies or ligands are highly specific to the molecule to be tested. Unbound molecules / substances are eluted by chromatography to eliminate background interfering substances. The quality control line (C line) is a reference line used to verify the effectiveness and correctness of the reagent card / kit. The labeled substances on the labeled antibody usually include colloidal gold particles, fluorescent microspheres / fluorescein, upconversion luminescent substances, etc. After the reagent card is inserted into the immunochromatographic analyzer, the detection system will measure the amount of the labeled substance by measuring the optical density, fluorescence intensity, etc., thereby reflecting the amount of the molecule to be tested in the sample.

[0024] Since the T line and C line on the reagent card need to be scanned, the existing immunochromatographic analyzer fits the reagent card tightly with the card slot and fixes it in a specific position in the card slot, so it can only adapt to a reagent card of a specific size. Otherwise, the reagent card cannot be put into the card slot because it is too wide or too thick; or the reagent card cannot be fixed in the card slot because it is too small or too thin, and the application range is narrow.

[0025] Based on this, one of the objects of the present invention is to provide a tray including card slots suitable for reagent cards of different sizes. Figure 1 , Figure 2 , Figure 3 As shown, Figure 1The schematic coordinate axes of the X direction, Y direction and Z direction are used for explanation. In the present invention, the length direction of the reagent card 6 in the figure is the y direction, the width direction is the x direction, and the vertical direction is the z direction. The card slot structure includes a card slot body 2, the cross section of the card slot body 2 is an elliptical structure or a rectangular structure, and an opening 21 is provided on the upper surface of the card slot body 2. The length of the opening 21 of the card slot is 25 mm and the width is 8 mm, which is larger than the viewing window 61 of most colloidal gold and fluorescent reagent cards 6. The conventional length of the viewing window 61 of the reagent card 6 is 20 mm and the width is 4 mm, so that the opening of the card slot body 2 can be used to observe the viewing window 61 of the reagent card 6 in the card slot body 2; the width of the inside of the card slot is 24 mm, which can accommodate the width of most of the current colloidal gold and fluorescent reagent cards 6 (except for the arrangement of multiple reagent cards 6 side by side). The height of the inside of the card slot is greater than the height of the thickest reagent card 6 currently on the market, and can accommodate the height of most of the current colloidal gold and fluorescent reagent cards 6. In order to fix reagent cards 6 of different sizes and improve detection efficiency, the present invention provides a positioning component on the card slot body 2 to fix the reagent card 6 in the card slot body 2 .

[0026] In one embodiment, if Figure 1 , Figure 2 , Figure 3 As shown, the positioning component is a vertical positioning ball head ejector 22. This embodiment adopts four symmetrically arranged ball head ejector pins 22. The ball head ejector pins 22 symmetrically arranged on both sides are spaced 10 mm in the x direction, and the ball head ejector pins 22 located on the same side are spaced 30 mm in the y direction. The ball head ejector pin 22 includes a ball head and an elastic part. The elastic part is vertically fixed to the inner top of the card slot body 2, and the ball head is installed at the bottom of the elastic part. The elastic part in this embodiment adopts a plunger, which is fixedly connected to the inner top of the card slot body 2. A spring is provided in the plunger, and the spring is connected to a plunger rod. One end of the plunger rod is penetrated in the plunger, and the other end is connected to the ball head. When the reagent card 6 enters the card slot, the ball head will be squeezed, so that the plunger rod drives the ball head upward. When the installation position of the reagent card 6 is determined, the plunger rod and the ball head are pushed downward under the elastic force of the spring in the plunger to achieve the extrusion and fixation of the reagent card 6. The plunger rod stroke of the ball head ejector pin 22 is 1.6 mm, which includes the height difference of most reagent cards 6.

[0027] The plunger structure can also be replaced by a cylinder or a sleeve, and the above functions can also be achieved. During detection, the user inserts the reagent card 6 into the card slot and adjusts the position of the reagent card 6 so that the viewing window 61 of the reagent card 6 is in the opening of the card slot. The ball head ejector pin 22 on the inner surface of the card slot fixes the reagent card 6 from the z direction to prevent it from being displaced in the card slot. For most reagent cards 6 (width 16mm, length 50mm), 4 ball head ejector pins 22 can provide enough fixation in the z direction.

[0028] In another embodiment, the reagent card 6 in the card slot can be fixed by side positioning. Figure 4 , Figure 5 , Figure 6 The positioning assembly of this embodiment is a positioning clip 23. The side walls of the card slot body 2 are provided with symmetrically arranged clamps, and each clamp is provided with a positioning clip 23; one end of the positioning clip 23 is movably arranged in the clamp, and the other end of the positioning clip 23 is installed on the side wall of the card slot body 2 through a torsion spring 24. When the torsion spring 24 is compressed, the end of the positioning clip 23 can move horizontally to the side away from the axis of the card slot body 2. The spacing between two adjacent positioning clips 23 on the same side is 30mm; the spacing between the ends of the positioning clips 23 symmetrically arranged on both sides of the card slot body 2 is 12mm~30mm, that is, in the natural state of the positioning clip 23, the minimum spacing between the ends of the two positioning clips 23 on both sides in the x direction is 12mm, and the maximum spacing after the torsion spring 24 is compressed is 30mm, which can cover the width of most of the reagent card 6. During the test, the user inserts the reagent card 6 into the card slot and adjusts the position of the reagent card 6 in the y direction so that the viewing window 61 of the reagent card 6 is in the opening of the card slot. The positioning clips 23 on both sides of the card slot fix the reagent card 6 from the x direction to prevent it from being displaced in the card slot.

[0029] The above is an embodiment of fixing different reagent cards 6 from the z direction and from the x direction. Other solutions of fixing different reagent cards 6 from the z direction and from the x direction are also within the protection scope of the present invention.

[0030] The card slot of the present invention can be used alone, but in order to further increase the types of reagent cards 6 that can be selected, it is used as a part of the tray and together with the tray as a whole. Based on this, the present invention provides a tray, such as Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, it also includes a tray rack 12, on which a tray body 1 is slidably provided. The tray body 1 has a length of 100-120 mm and a width of 30-70 mm, and can carry most of the colloidal gold and fluorescent reagent cards 6. The top of the tray body 1 is fixedly provided with a card slot as above; a tray notch 11 is opened on the end face of one end of the tray body 1. During testing, the user pulls out the tray body 1 through the tray notch 11 on the tray body 1.

[0031] In order to enable the tray body 1 to move smoothly, a slide bar 3 arranged along the length direction of the card slot is fixedly provided on the tray frame 12 in this embodiment, and a slider is fixedly provided at the bottom of the tray body 1, and the slider is slidably sleeved on the slide bar 3; a spring 4 is sleeved on the slide bar 3, one end of the spring 4 abuts against the slider, and the other end abuts against the end of the tray frame 12 close to the tray notch 11, and a damper 5 is provided at the end of the tray frame 12 away from the tray notch 11, and the end of the telescopic rod of the damper 5 is connected to the slider. In the process of pulling out the tray body 1, the spring 4 is compressed, so that the tray body 1 can move smoothly outward along the slide bar 3. After the reagent card 6 is installed, the tray body 1 is gently pushed, and the spring 4 pushes the tray body 1 back to the analyzer, and under the action of the damper 5, it reaches the set position smoothly.

[0032] In order to avoid the tray body 1 being separated from the tray rack 12 due to the tray body 1 being pulled outwards too long, in a preferred embodiment, a downwardly protruding locator 31 is fixedly provided at the bottom of the tray body 1. When the tray body 1 is pulled outwards, the locator 31 can abut against one end of the tray rack 12 close to the tray notch 11, thereby limiting the maximum pulling distance. During inspection, the user pulls out the tray body 1 through the tray notch 11 on the tray body 1, and stops at the position where the locator 31 abuts against one end of the tray rack 12.

[0033] In other embodiments, the tray of the present invention and the card slot do not have to be used in combination, and the card slot of the present invention can also be used without using the tray. In this way, more than one size of reagent cards 6 can be used, but the number of reagent cards 6 that can be used will be much less than that of using the tray.

[0034] Colloidal gold immunochromatography is used for irradiation and the optical density of reflected light is detected; while fluorescent immunochromatography requires a wavelength of light (such as ultraviolet light) for excitation and another longer wavelength of light is detected. Therefore, the optical principles, optical paths and photoelectric sensors of the two are not universal. Therefore, the existing immunochromatography analyzers can only perform colloidal gold immunochromatography or fluorescent immunochromatography.

[0035] In view of the above-mentioned shortcomings, a third object of the present invention is to provide an immunochromatographic analyzer, such as Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, combined with the above-mentioned card slot and tray, both colloidal gold immunochromatography detection and fluorescent immunochromatography detection can be performed; the immunochromatography analyzer includes a light source seat 7, which is a hollow cone structure with a black rough surface on the inner wall to absorb scattered light, and an opaque outer wall to prevent external light from entering the cavity and interfering with the detection. A rectangular observation port 73 is provided on the top of the light source seat 7, a camera 10 is provided above the rectangular observation port 73, and a filter 8 is provided between the camera 10 and the rectangular observation port 73. One side of the filter 8 is installed on a stepper motor 9. When the filter 8 is needed in the entire optical path, the stepper motor 9 drives the filter 8 to move to a set position and enter the optical path; when the filter 8 is not needed in the entire optical path, the stepper motor 9 drives the filter 8 to move to another set position and leave the optical path; the filter 8 is a long-pass filter 8 that cuts off the ultraviolet wavelength and short-wavelength blue light in the ultraviolet light LED 72. When detecting the colloidal gold reagent card 6, the stepper motor 9 removes the filter 8, and the reflected light of the chromatography membrane strip of the colloidal gold reagent card 6 can enter the camera 10 to form an image. When detecting the fluorescent reagent card 6, the stepper motor 9 drives the filter 8 to move below the camera 10, and only the fluorescence generated by the chromatography membrane strip after being excited by the ultraviolet LED 72 can enter the camera 10 through the rectangular observation port to form an image, while the excitation light of the ultraviolet LED 72 is intercepted by the filter 8 and cannot enter the camera 10.

[0036] Visible light sources and ultraviolet light sources are arranged at intervals on the upper part of the left and right inner walls of the light source seat 7. The visible light source adopts visible light LED 71, and the ultraviolet light source adopts ultraviolet light LED 72. Three visible light LEDs 71 and three ultraviolet light LEDs 72 are arranged alternately on each side, and the distance between adjacent visible light LEDs 71 and ultraviolet light LEDs 72 is 6 mm; entrances and exits are opened at the bottom of the front and rear side walls of the light source seat 7, and the tray is located below the light source seat 7, and the tray can drive the reagent card 6 in the card slot to enter the light source seat 7 from the entrance and exit.

[0037] In a specific embodiment, in order to form a uniform light intensity at the window of the reagent card 6, the angle between the visible light source and the ultraviolet light source and the horizontal is between 30° and 70°, and the preferred solution is an angle of 56° to the horizontal. The optical simulation results show that at this angle, the unevenness of the light intensity at the bottom plane of the window 61 of the reagent card 6 (unevenness = 2*(maximum value-minimum value) / (maximum value+minimum value)) is less than 5%.

[0038] When detecting the colloidal gold reagent card 6, the visible light LED 71 is turned on to illuminate the colloidal gold particles on the T line and the C line on the chromatographic membrane. When detecting the fluorescent reagent card 6, the ultraviolet light LED 72 is turned on to excite the fluorescent microspheres / fluorescein on the T line and the C line on the chromatographic membrane. The fluorescent microspheres are time-resolved fluorescent microspheres with an excitation wavelength of 365nm, or fluorescent quantum dots with an excitation wavelength of 365nm. Due to the above-mentioned visible light LED 71 and ultraviolet light LED 72 array design and the design of the stepping motor 9 driving the filter 8 to move, the immunoassay instrument of the present invention can perform both visible light immunochromatographic analysis and fluorescent immunochromatographic analysis, thereby achieving the effect of multiple functions of one machine.

[0039] In other embodiments, in addition to the above technical solutions of the present invention, to realize the multifunctional detection of visible light and fluorescent reagent card 6, the existing one-dimensional scanning method can also be used to fix the reagent card 6 in a specific position in the card slot. After the reagent card 6 is placed, the motor drives the screw rod to push the card slot to move along the one-dimensional direction. The photoelectric sensor probe placed in a fixed position above the reagent card 6 detects and quantifies the optical density or fluorescence intensity signal of the T line and the C line. However, when scanning the visible light and fluorescent reagent card 6, it is necessary to switch different photoelectric sensor probes, i.e., the optical density detection head and the fluorescence intensity detection head containing the filter 8. Its switching can be realized in two ways: one is to use an additional motor to drive different photoelectric sensor probes to move to the same fixed position, and the displacement of the card slot and the reagent card 6 does not need to change, and the card slot and the reagent card 6 are still driven by the motor to drive the screw rod; the second is to place two photoelectric sensor probes side by side along the y direction, and when scanning the visible light and fluorescent reagent card 6, the motor drives the card slot and the reagent card 6 to have different displacements, but the displacement of the reagent card 6 relative to different photoelectric sensor probes is consistent.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A pallet, characterized in that: include: A tray frame, wherein a tray body is slidably arranged on the tray frame, the upper surface of the tray body is a plane and fixedly provided with a card slot, a slide bar arranged along the length direction of the card slot is fixedly arranged on the tray frame, a slider is fixedly arranged at the bottom of the tray body, and the slider is slidably sleeved on the slide bar; a spring is sleeved on the slide bar, one end of the spring abuts against the slider, and the other end abuts against the tray frame; The card slot includes a card slot body and a positioning assembly, an upper surface of the card slot body is provided with an opening, and the opening is used as a viewing window for observing the reagent card in the card slot body; the width of the interior of the card slot body is greater than the width of the reagent card, and the height of the interior of the card slot body is greater than the height of the reagent card; The positioning component is arranged on the card slot body and can fix the reagent card in the card slot body; the positioning component is a vertical positioning component or a lateral positioning component, and the lateral positioning component includes a positioning clip, and the side walls on both sides of the card slot body are provided with symmetrically arranged clamping openings, and each of the clamping openings is provided with a positioning clip; one end of the positioning clip is movably arranged in the clamping opening, and the other end of the positioning clip is installed on the side wall of the card slot body through a torsion spring, and when the torsion spring is compressed, the end of the positioning clip can move horizontally to the side away from the axis of the card slot body.

2. The pallet according to claim 1, characterized in that: The vertical positioning assembly includes a ball head ejector pin, which includes a ball head and an elastic part. The elastic part is vertically fixed to the inner top of the slot body, and the ball head is installed at the bottom of the elastic part. A plurality of the ball head ejectors are evenly distributed outside the opening.

3. The pallet according to claim 1, characterized in that: The spacing between two adjacent positioning clips on the same side is 30 mm; the spacing between the ends of the positioning clips symmetrically arranged on both sides of the slot body is 12 mm to 30 mm.

4. The pallet according to claim 1, characterized in that: Including: a tray notch is opened on the end surface of one end of the tray body.

5. The tray according to claim 4, characterized in that: One end of the spring abuts against the slider, and the other end abuts against an end of the tray frame close to the tray notch.

6. The pallet according to claim 5, characterized in that: A damper is provided at one end of the pallet rack away from the pallet notch, and the end of the telescopic rod of the damper is connected to the sliding block.

7. The tray according to claim 5, characterized in that: A downwardly protruding positioner is fixedly provided at the bottom of the tray body, and the positioner can abut against an end of the tray frame close to the tray notch.

8. An immunochromatographic analyzer, characterized in that: It comprises a light source seat and a tray as described in any one of claims 1 to 7; the light source seat is a conical structure with a hollow interior, a rectangular observation port is provided on the top of the light source seat, a camera is provided above the rectangular observation port, a filter is provided between the camera and the rectangular observation port, one side of the filter is mounted on a stepper motor, and the stepper motor can drive the filter to move horizontally to a position directly below the camera or away from the camera; visible light sources and ultraviolet light sources are arranged at intervals on the left and right inner walls of the light source seat; an inlet and outlet are provided at the bottom of the front and rear side walls of the light source seat, the tray is located below the light source seat, and the tray can drive the card slot and the reagent card to enter the light source seat from the inlet and outlet.

9. The immunochromatographic analyzer according to claim 8, characterized in that: The angles between the visible light source and the ultraviolet light source and the horizontal are both between 30° and 70°.

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