CN205463469U - External immunological reagents's automatic cup wiper mechanism of sample - Google Patents

Abstract

The utility model relates to a sample automatic cleaning cup cleaning mechanism for in vitro immune reagents, which effectively solves the problems of low precision of the traditional cleaning mechanism, needing to be manually patted dry, and cumbersome operation; There is a column support frame, a washing liquid plate is arranged between the column support frames, and a through hole is arranged on the washing liquid plate, and a liquid adding needle passes through the through hole, and a plastic tube is installed in the liquid adding needle. The upper end is connected with a liquid pump, and a liquid-absorbing needle is arranged on the periphery of the through hole. The upper end of the liquid-absorbing needle is connected to a negative pressure air source through a silicone tube. Driven by the guide rail on the base plate, the sample cup holder can move laterally on the base plate, and a sensor is arranged directly under the liquid suction needle to form a structure where the sensor can detect whether there is a sample cup holder under the liquid suction needle; the utility model guarantees Accuracy of test results.

Description

A sample automatic cup cleaning mechanism for in vitro immunological reagents

technical field

The utility model relates to the technical field of in vitro diagnostic medical devices, in particular to a sample automatic cleaning cup cleaning mechanism for in vitro immune reagents.

Background technique

In vitro immunological reagents are medical testing reagents for immune analysis of the human body by detecting the content of some substances in the patient's serum or other body fluids through the immune reaction of the immune reagents in the in vitro sample cup. Add quantitative patient serum or other body fluids to the cuvette of a standard microwell plate coated with antibodies on the solid phase. The free components of the reaction; then add the substrate solution, use the color or photon changes produced by the enzymatic chemical reaction, through machine interpretation, read the values by the photon counter in turn, and perform quantitative analysis according to the mathematical model established by the standard, you can get Get the analysis results.

The accuracy of cleaning and the residue after cleaning directly affect the test results. The traditional plate washer distributes the liquid to a row of pipelines through the distribution pipe. Affected by the length of the pipeline and the maintenance effect, the cleaning effect of different cuvettes is different, resulting in differences between cuvettes larger.

The traditional plate washer uses a single needle to absorb liquid, and the liquid residue is large. It is necessary to manually pat the cuvette dry on absorbent paper, which is troublesome to operate and not accurate enough.

So it is necessary to find a way to solve this problem.

Contents of the invention

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide a sample automatic cleaning cup cleaning mechanism for in vitro immunological reagents, which effectively solves the problem of low precision of the traditional cleaning mechanism and the need for manual drying and operation. Troublesome question.

The technical solution is to include a bottom plate, a plurality of vertical column support frames are arranged on the bottom plate, a horizontally placed and liftable washing liquid plate is arranged between the multiple vertical column support frames, and a liquid washing plate is provided on the liquid washing plate. There is a vertical lotion filling needle with a fixed upper end passing through the through hole. A plastic tube is installed inside the liquid filling needle. The upper end of the liquid filling needle is connected to a liquid filling pump. There are three liquid-absorbing needles in the shape of "product" on the washing liquid plate. The upper end of the liquid-absorbing needle is connected to a negative pressure air source through a silicone tube. There is a sample cup holder placed under the liquid-absorbing needle on the bottom plate. Driven by the guide rail placed on the bottom plate, the structure of the sample cup holder can move laterally on the bottom plate. A sensor is installed directly under the liquid aspiration needle to form a structure that the sensor can detect whether there is a sample cup holder under the liquid aspiration needle.

The utility model has an ingenious structure, adopts the automatic cleaning mechanism of the in vitro immune reagent sample cup of the above technical scheme, and cleans each reaction cup through a cleaning unit, so that the washing effect of each reaction cup is consistent, thereby reducing cleaning variation and ensuring detection The accuracy of the results; at the same time, the three needles in the shape of a square are used to absorb the waste liquid, the liquid remains small, and there is no need to manually pat dry, which speeds up the cleaning speed and improves the efficiency of the instrument. The support structure and the working structure are integrated, the machine is compact, and the space is small The detection instrument is convenient for miniaturization and automation.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the front view of the utility model.

detailed description

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

Given by Fig. 1 to Fig. 2, the utility model comprises a base plate 1, on which a plurality of vertical column support frames 2 are arranged, and a horizontally placed and liftable washing liquid is arranged between the plurality of column support frames 2 Plate 3, liquid washing plate 3 is provided with a through hole 4, through the through hole 4 there is a vertical lotion liquid feeding needle 5 with a fixed upper end, and a plastic tube 6 is housed in the liquid adding needle 5, and the upper end of the liquid adding needle 5 is connected to There is a liquid filling pump 7, and the outer periphery of the through hole 4 is provided with three liquid-absorbing needles 8 in the shape of "product" that pass through the lotion plate 3 and are fixed on the lotion plate 3. The upper ends of the liquid-absorbing needles 8 pass through the silicone tube 9 Connect the negative pressure air source 10, the bottom plate 1 is provided with a sample cup holder 11 placed under the liquid suction needle 8, the sample cup holder 11 is driven by the guide rail placed on the bottom plate 1, and the sample cup holder 11 can be horizontally placed on the bottom plate 1 In the moving structure, a sensor 12 is provided directly under the liquid aspirating needle 8 , so that the sensor 12 can detect whether there is a sample cup holder 11 under the liquid aspirating needle 8 .

There are four column support frames 2, and the washing liquid plate 3 is rectangular, and the four corners of the liquid washing plate 3 are sleeved on the column support frame 2.

The liquid washing plate 3 is driven by the lifting motor 13 placed at its lower end, forming a structure in which the liquid washing plate 3 can move up and down on the column support frame 2 .

The support frame 2 of the column is provided with a return spring 14 connected to the washing liquid plate 3 to form a structure that the liquid washing plate 3 can automatically reset after the downward movement is completed.

The through hole 4 is placed in the middle of the washing liquid plate 3 .

The lotion adding needle 5 is a hollow stainless steel tube.

The guide rail includes a horizontal positioning guide rail 15 placed on the base plate 1, the positioning guide rail 15 is groove-shaped, and the inner edge of the positioning guide rail 15 is provided with a precision thread 16, and the sample cup holder 11 is connected with a The motor 17 matched with the precision thread 16 constitutes a structure in which the motor 17 drives the sample cup holder 11 to move laterally on the positioning guide rail 15 .

The sensor 12 is a photocoupler.

When the utility model is used,

Put the reaction cup into the sample cup holder 11, the motor 17 drives the sample cup holder 11 to cooperate with the precision thread 16 in the positioning guide rail 15, so that the reaction cup moves laterally to the directly below the liquid suction needle 8, at this time the photoelectric coupler receives the signal The reaction cup is stopped, and the liquid addition pump 7 adds the washing solution into the reaction cup through the plastic tube in the liquid addition needle 5 .

The lifting motor 13 drives the liquid washing plate 3 to move downward, and the liquid washing plate 3 drives the liquid suction needle 8 to move downward. The liquid suction needle 8 sucks the liquid in the cuvette away through the negative pressure air source 10. After the work is completed, the return spring 14Pull the wash plate 3 back to its original position.

The utility model utilizes a single lotion filling and cleaning mechanism, the cleaning process is the same, the washing variation is reduced, and the result is guaranteed to be accurate.

The utility model adopts three needles in the shape of "product" to absorb waste liquid, and the absorption speed is fast, which speeds up the cleaning speed and improves the efficiency of the instrument; the traditional plate washing machine adopts a single needle to absorb liquid, and the liquid residue is large, and the reaction cup needs to be manually placed in the water absorption process. Pat dry on paper, and three-needle aspiration, the reaction cup has no dead angle, and the residue of washing liquid is extremely low, so there is no need to manually pat the reaction cup dry.

The liquid filling needle 5 is fixed, which reduces the failure rate of the pressure parts, and the liquid filling is more uniform; the liquid suction needle 8 is a fixed tube for lotion filling, and the lotion is added to the cuvette through the plastic tube 6 inside the steel needle, which is easy to adjust and add. The height of the liquid needle 5, if the liquid-feeding needle is blocked, it is only necessary to extract the plastic tube 6 to replace it, and it is not necessary for personnel to dredge it with a through needle inside the narrow and small machine, which is easy to maintain.

The liquid washing plate 3 is controlled by a lifting motor 13 and a return spring 14, which reduces the complexity of using a screw motor guide rail drive, and the spring reset is fast and stable, and the maintenance is simple, which reduces the cost of the product and the maintenance cost.

The horizontal guide rail adopts a photoelectric coupler. When the cuvette moves directly below the liquid aspiration needle, the sensor just falls on the through hole of the guide rail. It avoids the misoperation of the liquid suction needle, the liquid leaks into the machine, and damages the electronic components.

The utility model has an ingenious structure, adopts the automatic cleaning mechanism of the in vitro immune reagent sample cup of the above technical scheme, and cleans each reaction cup through a cleaning unit, so that the washing effect of each reaction cup is consistent, thereby reducing cleaning variation and ensuring detection The accuracy of the results; at the same time, the three needles in the shape of a square are used to absorb the waste liquid, the liquid remains small, and there is no need to manually pat dry, which speeds up the cleaning speed and improves the efficiency of the instrument. The support structure and the working structure are integrated, the machine is compact, and the space is small The detection instrument is convenient for miniaturization and automation.

Claims (8)

1. A sample automatic cleaning cup cleaning mechanism for in vitro immunological reagents, comprising a base plate (1), characterized in that the base plate (1) is provided with a plurality of vertical column support frames (2), and a plurality of column support frames ( 2) There is a horizontally placed and liftable washing plate (3), and a through hole (4) is provided on the washing plate (3), and a vertical washing plate with a fixed upper end passes through the through hole (4). Liquid-filling needle (5), the plastic tube (6) is installed inside the liquid-filling needle (5), the upper end of the liquid-filling needle (5) is connected to the liquid-filling pump (7), and the outer periphery of the through hole (4) is provided with a Washing plate (3) and three liquid-absorbing needles (8) in the shape of "product" fixed on the washing plate (3), the upper end of the liquid-absorbing needle (8) is connected to negative pressure gas The source (10), the bottom plate (1) is provided with a sample cup holder (11) placed under the liquid aspiration needle (8), and the sample cup holder (11) is driven by a guide rail placed on the bottom plate (1) to form a sample cup The frame (11) can move laterally on the bottom plate (1), and the sensor (12) is arranged directly under the liquid aspiration needle (8), and the sensor (12) can detect whether there is a sample cup under the liquid aspiration needle (8) The structure of frame (11). 2. The sample automatic cleaning cup cleaning mechanism for in vitro immunological reagents according to claim 1, characterized in that, there are four column support frames (2), the washing liquid plate (3) is rectangular, and the washing liquid The four corners of the plate (3) are sleeved on the column support frame (2). 3. The cleaning mechanism of an automatic sample cleaning cup for in vitro immunological reagents according to claim 1, characterized in that the washing liquid plate (3) is driven by a lifting motor (13) placed at its lower end to form a washing machine. The liquid plate (3) can move up and down on the column support frame (2). 4. The sample automatic cleaning cup cleaning mechanism for in vitro immunological reagents according to claim 3, characterized in that, the column support frame (2) is provided with a return spring (14) connected to the washing liquid plate (3) ), constituting the structure that the washing liquid plate (3) can be automatically reset after the downward movement is completed. 5 . The cleaning mechanism of an automatic sample cleaning cup for in vitro immunological reagents according to claim 1 , wherein the through hole ( 4 ) is placed in the middle of the washing liquid plate ( 3 ). 6 . The cleaning mechanism of an automatic sample cleaning cup for in vitro immunological reagents according to claim 1 , characterized in that the lotion adding needle ( 5 ) is a hollow stainless steel tube. 7. A sample automatic cleaning cup cleaning mechanism for in vitro immunological reagents according to claim 1, characterized in that, the guide rails include horizontal positioning guide rails (15) placed on the bottom plate (1), and the positioning guide rails (15 ) is groove-shaped, and the inner side of the positioning guide rail (15) is provided with a precision thread (16), and the sample cup holder (11) is connected with a motor (17) that can move in the positioning guide rail (15) and cooperate with the precision thread (16) ), forming a structure in which the motor (17) drives the sample cup holder (11) to move laterally on the positioning guide rail (15). 8 . The automatic sample cleaning mechanism for in vitro immunological reagents according to claim 1 , wherein the sensor ( 12 ) is a photocoupler.