A fluid path control unit of an in-vitro diagnostic analyzer

Abstract

The utility model relates to in-vitro diagnostic analysis appearance technical field, concretely relates to a kind of liquid path control unit of in-vitro diagnostic analysis appearance, including the deionized water storage barrel, filter, filter bubble tube and peristaltic pump connected in output direction in proper order, and the deionized water suction pump, pipetting electromagnetic valve, pipette and flushing station connected in output direction in proper order with filter bubble tube output end, first cleaning liquid storage barrel, first cleaning electromagnetic valve, first cleaning pump and first cleaning station connected in output direction in proper order, second cleaning liquid storage barrel, second cleaning electromagnetic valve, second cleaning pump and second cleaning station connected in output direction in proper order, with the waste liquid suction pump connected to the output end of first cleaning station, second cleaning station and flushing station, waste liquid electromagnetic valve and waste liquid storage barrel connected in output direction in proper order with waste liquid suction pump output end.The utility model simplifies the composition of pipeline and functional component, greatly reduces the complexity of liquid path system, and occupies small space, and failure rate is low.

Description

Technical Field

[0001] This utility model relates to the field of in vitro diagnostic analyzer technology, specifically to a liquid circuit control unit for an in vitro diagnostic analyzer. Background Technology

[0002] An in vitro diagnostic analyzer is a multifunctional and complex medical device. To achieve its complex functions, the system contains numerous modules. These modules are controlled by a unified computer system, including a reaction vessel loading system, a sample loading system, a reagent loading system, an incubation system, a cleaning system, a sample dispensing system, a liquid path, a photometric measurement system, and a computer control system.

[0003] The liquid circuit system of an in vitro diagnostic analyzer involves many units, including a sample sampling unit, a magnetic bead cleaning unit, a waste liquid treatment unit, and a reagent sampling unit, to realize functions such as liquid delivery, recovery, and mixing.

[0004] To achieve precision and automation, existing hydraulic systems have more complex piping designs and use more sophisticated functional components, resulting in drawbacks such as increased complexity, higher costs, higher failure rates, and inconvenient production and assembly. Utility Model Content

[0005] To address the technical problems of complex and costly liquid circuit systems, this invention provides a liquid circuit control unit for an in vitro diagnostic analyzer. This unit can meet the needs of reagent and sample liquid transfer, cleaning, and waste liquid discharge. It simplifies the composition of pipelines and functional components, significantly reduces the complexity of the liquid circuit system, occupies little space, and has a low failure rate.

[0006] The technical solution adopted by this utility model is to provide a liquid circuit control unit for an in vitro diagnostic analyzer, including a deionized water storage tank, a filter, a filter tube and a peristaltic pump connected in sequence along the output direction, a deionized water suction pump, a pipetting solenoid valve, a pipette and a rinsing station connected in sequence to the output end of the filter tube, a first cleaning solution storage tank, a first cleaning solenoid valve, a first cleaning pump and a first cleaning station connected in sequence along the output direction, a second cleaning solution storage tank, a second cleaning solenoid valve, a second cleaning pump and a second cleaning station connected in sequence along the output direction, a waste liquid suction pump connected to the output ends of the first cleaning station, the second cleaning station and the rinsing station, a waste liquid solenoid valve and a waste liquid storage tank connected in sequence to the output end of the waste liquid suction pump, the output end of the peristaltic pump being connected to the first cleaning station and the second cleaning station respectively, and the input end of the peristaltic pump being connected to the output ends of the first cleaning solenoid valve and the second cleaning solenoid valve respectively.

[0007] Two deionized water storage tanks are provided and connected by a deionized water check valve. The deionized water storage tank connected to the output end of the deionized water check valve is connected to the input end of the filter.

[0008] There are two first cleaning fluid storage tanks connected by a first cleaning check valve, wherein the first cleaning fluid storage tank connected to the output end of the first cleaning check valve is connected to the input end of the first cleaning solenoid valve.

[0009] There are two second cleaning fluid storage tanks connected to each other by a second cleaning check valve. The second cleaning fluid storage tank connected to the output end of the second cleaning check valve is connected to the input end of the second cleaning solenoid valve.

[0010] It also includes a reagent storage module, a reagent waste liquid pump, and a reagent waste liquid check valve connected in sequence, wherein the output end of the reagent waste liquid check valve is connected to the input end of the waste liquid solenoid valve.

[0011] The beneficial effects of this utility model are that it provides a liquid circuit control unit for an in vitro diagnostic analyzer. Each pipeline is powered by a different pump, which facilitates control and enables continuous liquid delivery. Deionized water is further filtered through a filter to improve its purity. Deionized water is also filtered again through a filter tube to reduce air bubbles in the pipeline. Two containers are provided for each of the deionized water and cleaning solution, increasing capacity and ensuring liquid supply. The overall design is more simplified, does not require high-precision functional equipment, has low cost, is convenient for production and assembly, operates stably, and reduces the failure rate. Attached Figure Description

[0012] Figure 1 This is a system block diagram of this utility model.

[0013] In the attached diagram, 1 is a deionized water storage tank, 2 is a filter, 3 is a filter tube, 4 is a peristaltic pump, 5 is a deionized water suction pump, 6 is a pipetting solenoid valve, 7 is a pipette, 8 is a rinsing station, 9 is a first cleaning solution storage tank, 10 is a first cleaning solenoid valve, 11 is a first cleaning pump, 12 is a first cleaning station, 13 is a second cleaning solution storage tank, 14 is a second cleaning solenoid valve, 15 is a second cleaning pump, 16 is a second cleaning station, 17 is a waste liquid suction pump, 18 is a waste liquid solenoid valve, 19 is a waste liquid storage tank, 20 is a deionized water check valve, 21 is a first cleaning check valve, 22 is a second cleaning check valve, 23 is a reagent compartment module, 24 is a reagent waste liquid pump, and 25 is a reagent waste liquid check valve. Detailed Implementation

[0014] like Figure 1As shown, this utility model provides a fluid circuit control unit for an in vitro diagnostic analyzer, including a deionized water storage tank 1, a filter 2, a filter tube 3, and a peristaltic pump 4 connected sequentially along the output direction; a deionized water suction pump 5, a pipetting solenoid valve 6, a pipette 7, and a rinsing station 8 connected sequentially to the output end of the filter tube 3; a first cleaning solution storage tank 9, a first cleaning solenoid valve 10, a first cleaning pump 11, and a first cleaning station 12 connected sequentially along the output direction; a second cleaning solution storage tank 13, a second cleaning solenoid valve 14, a second cleaning pump 15, and a second cleaning station 16 connected sequentially along the output direction; a waste liquid suction pump 17 connected to the output ends of the first cleaning station 12, the second cleaning station 16, and the rinsing station 8; a waste liquid solenoid valve 18 and a waste liquid storage tank 19 connected sequentially to the output end of the waste liquid suction pump 17; the output end of the peristaltic pump 4 is connected to the first cleaning station 12 and the second cleaning station 16 respectively; and the input end of the peristaltic pump 4 is also connected to the output ends of the first cleaning solenoid valve 10 and the second cleaning solenoid valve 14 respectively.

[0015] In this design, the various functional components are connected via pipelines. The deionized water storage tank 1 is used to store deionized water. The filter 2 and filter tube 3 are used to filter the deionized water. The pipette 7 itself has a suction syringe for quantitative aspiration and dispensing. Multiple pipettes 7 are provided, with different pipettes 7 used for reagent transport, sample transport, and waste liquid extraction, respectively. The pipette 7 can be moved in three directions using a three-dimensional displacement mechanism. Cleaning of the pipette 7 is completed using a rinsing station 8, which has cup-shaped containers. The bottom of the container is connected to the tubing. When cleaning is required, the needle tip of pipette 7 is inserted into the container from top to bottom. After rinsing with water, the waste liquid is discharged through the drain pipe at the bottom of the container. The first cleaning solution storage tank 9 and the second cleaning solution storage tank 13 are used to store the cleaning solution. The first cleaning station 12 and the second cleaning station 16 have the same structure, which has a liftable suction needle connected to the tubing. The cleaning solution is inserted into the reaction cup through the suction needle to clean the magnetic beads in the reaction cup, and the waste liquid is also removed through the suction needle. The waste liquid storage tank 19 is used to store the discharged waste liquid.

[0016] like Figure 1 As shown, there are two deionized water storage tanks 1 connected by a deionized water check valve 20. The deionized water storage tank 1 connected to the output end of the deionized water check valve 20 is connected to the input end of the filter 2.

[0017] Two deionized water storage tanks 1 are provided, one as the main tank and the other as the auxiliary tank, to increase the storage capacity. The main tank is used to supply water to the liquid circuit system, and the auxiliary tank is used to replenish water to the main tank. The two are connected by a deionized water check valve 20 to prevent the deionized water in the main tank from flowing back to the auxiliary tank.

[0018] like Figure 1As shown, there are two first cleaning fluid storage tanks 9 connected to a first cleaning check valve 21. The first cleaning fluid storage tank 9 connected to the output end of the first cleaning check valve 21 is connected to the input end of the first cleaning solenoid valve 10.

[0019] Two first cleaning fluid storage tanks 9 are provided, one as the main tank and the other as the auxiliary tank, to increase the storage capacity. The main tank is used to supply cleaning fluid to the fluid circuit system, and the auxiliary tank is used to replenish the main tank. The two are connected by a first cleaning check valve 21 to prevent the cleaning fluid in the main tank from flowing back to the auxiliary tank.

[0020] like Figure 1 As shown, there are two second cleaning fluid storage tanks 13 connected to each other by a second cleaning check valve 22. The second cleaning fluid storage tank 13 connected to the output end of the second cleaning check valve 22 is connected to the input end of the second cleaning solenoid valve 14.

[0021] Two cleaning fluid storage tanks 13 are provided, one as the main tank and the other as the auxiliary tank, to increase the storage capacity. The main tank is used to supply cleaning fluid to the fluid circuit system, and the auxiliary tank is used to replenish the main tank. The two are connected by a second cleaning check valve 22 to prevent the cleaning fluid in the main tank from flowing back to the auxiliary tank.

[0022] like Figure 1 As shown, it also includes a reagent compartment module 23, a reagent waste liquid pump 24, and a reagent waste liquid check valve 25 connected in sequence. The output end of the reagent waste liquid check valve 25 is connected to the input end of the waste liquid solenoid valve 18.

[0023] The reagent waste liquid pump 24 draws waste liquid from the reagent compartment module 23, and then outputs it through the reagent waste liquid check valve 25. The waste liquid enters the waste liquid storage tank 19 for storage through the waste liquid solenoid valve 18.

[0024] When in use, this design starts the peristaltic pump 4 to extract deionized water. The deionized water in the deionized water storage tank 1 is filtered through the filter 2 and the filter tube 3 and then transported to the first cleaning station 12 and the second cleaning station 16. The first cleaning station 12 and the second cleaning station 16 are equipped with extraction needles that can move up and down, which can clean the magnetic beads in the reaction cup of the incubation module.

[0025] Start the suction pump 5 to draw deionized water. The deionized water in the deionized water storage tank 1 is filtered through the filter 2 and the filter tube 3, and then enters the pipette 7 through the pipetting solenoid valve 7 to clean the pipette 7.

[0026] The first cleaning pump 11 is started to draw cleaning fluid. The cleaning fluid in the first cleaning fluid storage tank 9 enters the first cleaning station 12 after passing through the first cleaning solenoid valve 10. The first cleaning station 12 is used to rinse the magnetic beads in the reaction cup and remove waste liquid.

[0027] The second cleaning pump 15 is started to draw cleaning fluid. The cleaning fluid in the second cleaning fluid storage tank 13 enters the second cleaning station 16 after passing through the second cleaning solenoid valve 14. The magnetic beads in the reaction cup are rinsed and waste liquid is removed through the suction needle of the second cleaning station 16.

[0028] The first cleaning station 12 and the second cleaning station 16 extract waste liquid from the reaction cup through suction needles. The waste liquid after the pipette 7 is rinsed with water is extracted by the waste liquid suction pump 17, and after passing through the waste liquid solenoid valve 18, it enters the waste liquid storage tank 19. The waste liquid suction pump 17 is equipped with three output terminals that are respectively connected to the output terminals of the first cleaning station 12, the second cleaning station 16 and the pipette 7. The input terminals of the waste liquid suction pump 17 are all connected to the input terminal of the waste liquid solenoid valve 18.

[0029] Waste liquid in reagent compartment module 22 is extracted by reagent waste liquid pump 24, and after passing through reagent waste liquid check valve 25, it is transported to waste liquid storage tank 19.

[0030] Multiple waste liquid storage tanks 19 can be installed, and the flow of waste liquid to unfilled storage tanks can be controlled by a distribution valve.

Claims

1. A fluid circuit control unit for an in vitro diagnostic analyzer, characterized in that: The system includes, in sequence along the output direction, a deionized water storage tank (1), a filter (2), a filter tube (3), and a peristaltic pump (4); a deionized water suction pump (5), a pipetting solenoid valve (6), a pipette (7), and a rinsing station (8), a first cleaning solution storage tank (9), a first cleaning solenoid valve (10), a first cleaning pump (11), and a first cleaning station (12), and a second cleaning solution storage tank (13), a second cleaning solenoid valve (14), and a second cleaning solenoid valve (15). The cleaning pump (15) and the second cleaning station (16), the waste liquid suction pump (17) connected to the output ends of the first cleaning station (12), the second cleaning station (16) and the flushing station (8), the waste liquid solenoid valve (18) and the waste liquid storage tank (19) connected in sequence to the output end of the waste liquid suction pump (17), the output end of the peristaltic pump (4) connected to the first cleaning station (12) and the second cleaning station (16) respectively, and the input end of the peristaltic pump (4) also connected to the output end of the first cleaning solenoid valve (10) and the second cleaning solenoid valve (14) respectively.

2. The fluid control unit of an in vitro diagnostic analyzer according to claim 1, characterized in that: Two deionized water storage tanks (1) are provided and connected by a deionized water check valve (20). The deionized water storage tank (1) connected to the output end of the deionized water check valve (20) is connected to the input end of the filter (2).

3. The fluid control unit of an in vitro diagnostic analyzer according to claim 1, characterized in that: There are two first cleaning fluid storage tanks (9) connected to each other by a first cleaning check valve (21), wherein the first cleaning fluid storage tank (9) connected to the output end of the first cleaning check valve (21) is connected to the input end of the first cleaning solenoid valve (10).

4. The fluid control unit of an in vitro diagnostic analyzer according to claim 1, characterized in that: There are two second cleaning fluid storage tanks (13) connected to each other by a second cleaning check valve (22). The second cleaning fluid storage tank (13) connected to the output end of the second cleaning check valve (22) is connected to the input end of the second cleaning solenoid valve (14).

5. The fluid control unit of an in vitro diagnostic analyzer according to claim 1, characterized in that: It also includes a reagent storage module (23), a reagent waste liquid pump (24), and a reagent waste liquid check valve (25) connected in sequence, wherein the output end of the reagent waste liquid check valve (25) is connected to the input end of the waste liquid solenoid valve (18).

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