Reagent injection device for a chemiluminescence instrument

Abstract

This utility model belongs to the technical field of reagent addition equipment. It discloses a reagent injection device for a chemiluminescence analyzer, including a base and a pipette tip holder, reagent rack, sample rack, and disassembly rack fixedly installed on the base. A gantry frame is fixedly installed on the base, and a slide block is horizontally slidably connected to the inner side of the gantry frame. A slide plate is vertically slidably connected to the slide block, and multiple sample addition components are provided on the slide plate. Multiple pipette tips are placed on the pipette tip holder, and multiple U-shaped disassembly slots are provided on the disassembly rack. This utility model allows the slide plate and sample addition components to move sequentially through the pipette tip holder, reagent rack, sample rack, and disassembly rack via the sliding of the slide block. The up-and-down movement of the slide plate automatically installs and removes the pipette tips at the bottom of the sample addition components, simultaneously completing the reagent aspiration and addition operations, thus achieving automation and greatly improving operational efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of reagent addition equipment, specifically relating to a reagent injection device for a chemiluminescence analyzer. Background Technology

[0002] In most existing chemiluminescence analyzers, reagent injection is done manually using a pipette. First, a pipette tip needs to be manually installed on the pipette tip. Then, the pipette is used to draw the reagent into the tip. Next, the pipette is moved above the sample solution and the reagent is discharged into the sample. Finally, the used tip needs to be manually removed. This process is all done manually, resulting in a large workload and low efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a reagent injection device for a chemiluminescence analyzer, so as to solve the problem of low efficiency caused by the manual operation of the reagent injection device in the existing chemiluminescence analyzer.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A reagent injection device for a chemiluminescence analyzer includes a base and a pipette tip holder, a reagent holder, a sample holder, and a disassembly frame fixedly mounted on the base. A gantry frame is fixedly mounted on the base. A slide block is horizontally slidably connected to the inner side of the gantry frame. A slide plate is vertically slidably connected to the slide block. Multiple sample loading components are provided on the slide plate. Multiple pipette tips are placed on the pipette tip holder. Multiple U-shaped disassembly slots are provided on the disassembly frame.

[0006] Preferably, a collection box is fixedly installed on the base, and the collection box is located below multiple disassembly slots.

[0007] Preferably, a second lead screw is rotatably connected to the gantry frame, and the slide is screwed onto the outside of the second lead screw.

[0008] Preferably, a second motor is fixedly installed on one side of the gantry frame, and the output end of the second motor is fixedly connected to one end of the second lead screw.

[0009] Preferably, a first lead screw is rotatably connected to the slide block, and the slide plate is screwed onto the outside of the first lead screw.

[0010] Preferably, a first motor is fixedly mounted on the slide block, and the output end of the first motor is fixedly connected to one end of the first lead screw.

[0011] Preferably, the sample dispensing assembly includes a suction cylinder fixed to the bottom of the slide plate and a piston slidably connected inside the suction cylinder. A slide rod is fixedly installed on the top of the piston, and the top of the slide rod extends slidably above the slide plate. A slider is fixedly installed on the top of the slide rod. A movable frame is slidably connected above the slide plate, and a slide cylinder is fixedly installed on the movable frame. A screw is rotatably connected inside the slide cylinder, and the bottom end of the screw is screwed through the slider and screwed into the slide rod.

[0012] Preferably, the top end of the screw rotates through the slide cylinder, and a knob is fixedly installed on the top end of the screw.

[0013] Preferably, one end of the slider extends to the outside of the slide cylinder, and the outside of the slide cylinder is provided with scale lines on one side of the slider.

[0014] Preferably, an electric push rod is fixedly installed on the skateboard, and the movable frame is fixedly connected to the telescopic end of the electric push rod.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] (1) This utility model is equipped with a sliding block and a sliding plate. When adding reagents, the sliding block first moves the sliding plate and the sample dispensing component to the top of the pipette tip holder. The pipette tip at the bottom of the sample dispensing component is installed by the downward movement of the sliding plate. Then, the sliding block moves the sliding plate and the sample dispensing component through the reagent rack and the sample rack in sequence, and the reagent aspiration and addition operations are completed at the same time. Finally, the sliding block moves the sliding plate and the sample dispensing component to the disassembly rack. The pipette tip is removed by the upward movement of the sliding plate and the disassembly groove on the disassembly rack. In this way, the pipette tip addition and removal and the reagent aspiration and addition operations are automatically realized, realizing the automation process and greatly improving the operation efficiency.

[0017] (2) The present invention can drive the sample addition component and the bottom pipette to move up and down by sliding the slide plate, so that the pipette can pick up reagents at different liquid levels and effectively prevent reagent splashing when adding reagents to the sample, thus avoiding the situation where the test results are not obvious.

[0018] (3) This utility model is equipped with a sample addition component. By setting multiple sample addition components, reagents can be added to multiple sample solutions at the same time, which improves efficiency. In addition, when multiple sample solutions need to be added with different amounts of reagents, the screw in each sample addition component can be rotated when the reagent is drawn to make the slider descend, thereby causing the slider to push the piston to move down in the pipette, thereby reducing the amount of reagent in the corresponding pipette tip. In this way, multiple sample solutions can be added with different amounts of reagents at the same time, which increases practicality. Attached Figure Description

[0019] Figure 1 This is the first perspective view of the present invention;

[0020] Figure 2 This is a second perspective view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a cross-sectional view of the skateboard assembly of this utility model;

[0023] Figure 5 This is a perspective view of the slider assembly of this utility model;

[0024] In the diagram: 1-base, 2-suction head holder, 3-suction head, 4-gantry frame, 5-suction cylinder, 6-slide cylinder, 7-knob, 8-moving frame, 9-first motor, 10-first lead screw, 11-electric push rod, 12-slide plate, 13-slide base, 14-second lead screw, 15-second motor, 16-disassembly frame, 17-disassembly slot, 18-collection box, 19-sample rack, 20-reagent rack, 21-slider, 22-scale line, 23-piston, 24-slide rod, 25-screw. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 As shown, this utility model provides the following technical solution:

[0027] A reagent injection device for a chemiluminescence analyzer includes a base 1 and a pipette tip holder 2, a reagent rack 20, a sample rack 19, and a disassembly rack 16 fixedly mounted on the base 1. A gantry frame 4 is fixedly mounted on the base 1. A slide block 13 is horizontally slidably connected to the inner side of the gantry frame 4. A slide plate 12 is vertically slidably connected to the slide block 13. Multiple sample loading components are provided on the slide plate 12. Multiple pipette tips 3 are placed on the pipette tip holder 2. Multiple U-shaped disassembly grooves 17 are provided on the disassembly rack 16.

[0028] Based on the disclosed structure above, when performing reagent injection operations in a chemiluminescence analyzer:

[0029] First, place multiple suction tips 3 on the suction tip holder 2. Then, move the slide block 13 within the gantry 4, causing the slide plate 12 and multiple sample dispensing components to move above the suction tip holder 2, with the bottoms of the multiple sample dispensing components directly above the multiple suction tips 3. Next, move the slide plate 12 downward within the slide block 13, causing the multiple sample dispensing components to move downward, thus allowing the bottoms of the multiple sample dispensing components to be inserted into the multiple suction tips 3. The bottoms of the sample dispensing components and the suction tips 3 are connected by an interference fit. Then, move the slide plate 12 upward, causing the multiple sample dispensing components to move out of the suction tip holder 2. Finally, move the slide block 13 again, causing the slide plate 12 and multiple sample dispensing components to move upward. Multiple sample loading components move to the top of reagent rack 19, slide plate 12 moves down to allow multiple sample loading components and pipette tip 3 to enter the reagent and draw the reagent. After drawing the reagent, slide plate 12 moves up to allow multiple sample loading components to move the pipette tip 3 that drew the reagent out. Then slide base 13 moves to move slide plate 12 and multiple sample loading components to the top of sample rack 18, slide plate 12 moves down to allow multiple sample loading components to move the bottom end of pipette tip 3 to the top of the sample liquid surface and inject the reagent into the sample solution. After the injection is completed, slide plate 12 moves up to allow multiple sample loading components to move the pipette tip 3 that drew the reagent out, thus completing the reagent injection operation of the chemiluminescence analyzer.

[0030] Finally, the movable slide 13 moves the slide plate 12 and multiple sample application components to one side of the disassembly frame 16, and moves the multiple sample application components into multiple disassembly slots 17 respectively, so that the used suction head 3 is located below the disassembly slot, and the top edge of the suction head 3 is larger than the width of the disassembly slot 17. Then, by moving the slide plate 12 upward, the multiple sample application components are moved upward, and the disassembly slot 17 blocks the movement of the suction head 3, thereby separating the suction head 3 from the bottom of the sample application components. This realizes the automatic removal of the used suction head 3, which facilitates continuous operation of the device and improves efficiency.

[0031] Preferably, a collection box 18 is fixedly installed on the base 1, and the collection box 18 is located below multiple disassembly slots 17. Based on this, the disassembly slots 17 prevent the pipette tip 3 from moving, so that after the pipette tip 3 separates from the bottom of the sample application component, the used pipette tip 3 falls into the collection box 18 for collection, which facilitates subsequent unified processing and avoids contamination.

[0032] Furthermore, regarding the movement of the slide 13, a second lead screw 14 is rotatably connected to the gantry frame 4, and the slide 13 is screwed onto the outside of the second lead screw 14; a second motor 15 is fixedly installed on one side of the gantry frame 4, and the output end of the second motor 15 is fixedly connected to one end of the second lead screw 14. Based on this, the second motor 15 drives the second lead screw 14 to rotate, causing the slide 13, which is screwed onto the outside of the second lead screw 14, to move horizontally along the second lead screw 14 within the gantry frame 4.

[0033] Furthermore, regarding the movement of the slide plate 12, a first lead screw 10 is rotatably connected to the slide block 13, and the slide plate 12 is screwed onto the outside of the first lead screw 10; a first motor 9 is fixedly mounted on the slide block 13, and the output end of the first motor 9 is fixedly connected to one end of the first lead screw 10. Based on this, the first motor 9 drives the first lead screw 10 to rotate, causing the slide plate 12, screwed onto the outside of the first lead screw 10, to move vertically along the first lead screw 10 within the slide block 13.

[0034] Regarding the sample feeding assembly described above, it is preferred to have the following structure:

[0035] The sample feeding assembly includes a suction cylinder 5 fixed to the bottom of the slide plate 12 and a piston 23 slidably connected inside the suction cylinder 5. A slide rod 24 is fixedly installed on the top of the piston 23. The top of the slide rod 24 slides to the top of the slide plate 12. A slider 21 is fixedly installed on the top of the slide rod 24. A movable frame 8 is slidably connected above the slide plate 12. A slide cylinder 6 is fixedly installed on the movable frame 8. A screw 25 is rotatably connected inside the slide cylinder 6. The bottom end of the screw 25 is screwed through the slider 21 and screwed into the slide rod 24.

[0036] The top end of the screw 25 rotates through the slide cylinder 6, and a knob 7 is fixedly installed on the top end of the screw 25.

[0037] One end of slider 21 extends to the outside of slide cylinder 6, and scale line 22 is provided on the outside of slide cylinder 6 on one side of slider 21;

[0038] An electric push rod 11 is fixedly installed on the skateboard 12, and the movable frame 8 is fixedly connected to the telescopic end of the electric push rod 11.

[0039] As can be seen from the above, initially, the height of the multiple sliders 21 in the multiple slide cylinders 6 is the same. When multiple sample solutions need to be added with equal amounts of reagent, after the slide plate 12 drives the multiple sample dispensing components' pipettes 5 and the multiple pipettes 5's bottom interference fit-connected pipette tips 3 to extend into the reagent, the electric push rod 11 is activated to push out the telescopic end, so that the moving frame 8 moves away from the slide plate 12. As a result, the multiple slide cylinders 6 drive the corresponding screw-connected sliders 21 to rise through the multiple screws 25, which in turn causes the multiple slide rods 24 to drive the pistons 23 to move upward in the pipettes 5, so that the bottom pipette tips 3 of the pipettes 5 can draw up the reagent. Moreover, the multiple pistons 23 move the same distance, so that the multiple pipette tips draw up the same amount of reagent, thereby achieving the addition of equal amounts of reagent to multiple sample solutions.

[0040] When multiple sample solutions require different amounts of reagent, first, follow the steps described above to ensure that multiple pipette tips 3 draw up equal amounts of reagent, with the reagent amount equal to the maximum amount required for the multiple sample solutions. Then, rotate the knob 7 of the other sample dispensing component, causing the knob 7 to drive the screw 25 to rotate. This causes the corresponding slider 21 to move downward within the slide cylinder 6, which in turn causes multiple slide rods 24 to drive the piston 23 to move downward within the pipette cylinder 5, thus expelling excess reagent from the corresponding pipette tip 3. Simultaneously, observe the amount of reagent discharged through the scale line 22 on the outside of the slide cylinder 6, ensuring that each pipette tip 3 draws up a different amount of reagent. This allows for the addition of unequal amounts of reagent to multiple sample solutions, increasing practicality.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reagent injection device for a chemiluminescence analyzer, characterized in that: It includes a base (1) and a pipette holder (2), a reagent rack (20), a sample rack (19) and a disassembly rack (16) fixedly installed on the base (1). A gantry frame (4) is fixedly installed on the base (1). A slide block (13) is horizontally slidably connected to the inner side of the gantry frame (4). A slide plate (12) is vertically slidably connected to the slide block (13). Multiple sample loading components are provided on the slide plate (12). Multiple pipette tips (3) are placed on the pipette holder (2). Multiple U-shaped disassembly slots (17) are provided on the disassembly rack (16).

2. The reagent injection device for a chemiluminescence analyzer according to claim 1, characterized in that: A collection box (18) is fixedly installed on the base (1), and the collection box (18) is located below a plurality of disassembly slots (17).

3. The reagent injection device for a chemiluminescence analyzer according to claim 1, characterized in that: The second lead screw (14) is rotatably connected to the gantry frame (4), and the slide (13) is screwed onto the outside of the second lead screw (14).

4. The reagent injection device for a chemiluminescence analyzer according to claim 3, characterized in that: A second motor (15) is fixedly installed on one side of the gantry (4), and the output end of the second motor (15) is fixedly connected to one end of the second lead screw (14).

5. The reagent injection device for a chemiluminescence analyzer according to claim 1, characterized in that: The slide block (13) is rotatably connected to the first lead screw (10), and the slide plate (12) is screwed to the outside of the first lead screw (10).

6. The reagent injection device for a chemiluminescence analyzer according to claim 5, characterized in that: A first motor (9) is fixedly installed on the slide (13), and the output end of the first motor (9) is fixedly connected to one end of the first lead screw (10).

7. The reagent injection device for a chemiluminescence analyzer according to claim 1, characterized in that: The sample loading assembly includes a suction cylinder (5) fixed to the bottom of the slide plate (12) and a piston (23) slidably connected inside the suction cylinder (5). A slide rod (24) is fixedly installed on the top of the piston (23). The top of the slide rod (24) slides to the top of the slide plate (12). A slider (21) is fixedly installed on the top of the slide rod (24). A movable frame (8) is slidably connected above the slide plate (12). A slide cylinder (6) is fixedly installed on the movable frame (8). A screw (25) is rotatably connected inside the slide cylinder (6). The bottom end of the screw (25) is screwed through the slider (21) and screwed into the slide rod (24).

8. The reagent injection device for a chemiluminescence analyzer according to claim 7, characterized in that: The top end of the screw (25) rotates through the slide (6), and a knob (7) is fixedly installed on the top end of the screw (25).

9. The reagent injection device for a chemiluminescence analyzer according to claim 7, characterized in that: One end of the slider (21) extends to the outside of the slide cylinder (6), and the outside of the slide cylinder (6) is provided with a scale line (22) on one side of the slider (21).

10. The reagent injection device for a chemiluminescence analyzer according to claim 7, characterized in that: An electric push rod (11) is fixedly installed on the slide plate (12), and the movable frame (8) is fixedly connected to the telescopic end of the electric push rod (11).

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