A multifunctional needle washing groove

Abstract

The present invention discloses a multifunctional needle washing tank, which comprises a tank body. The tank body includes at least one cleaning chamber. A main partition is arranged between the cleaning chambers. Each cleaning chamber is divided into two centrosymmetric cleaning areas by a secondary partition. The cleaning areas are separated by the main partition and the secondary partition to reduce cross-contamination. A liquid level detection device is correspondingly arranged on each cleaning area. The main partition includes a high-level area and a low-level area. The longitudinal height of the high-level area is greater than that of the low-level area. The projection of the secondary partition on the main partition overlaps with both the high-level area and the low-level area of the main partition. The liquid level detection device is arranged on one side close to the high-level area of the main partition and the secondary partition. If liquid overflows between two adjacent cleaning chambers, the overflowing liquid tends to overflow mutually from the low-level area of the main partition. Arranging the liquid level detection device on one side close to the high-level area of the main partition can reduce the influence of the overflowing liquid on the detection accuracy of the liquid level detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a multifunctional needle washing trough. Background Art

[0002] During the clinical testing process, such as enzyme-linked immunosorbent assay (ELISA), washing is the most crucial technology. Usually, it is necessary to wash the microplate to separate free and bound enzyme markers, and to remove substances that did not bind to the solid-phase antigen or antibody remaining in the microplate wells and interfering substances non-specifically adsorbed to the solid-phase carrier during the reaction process.

[0003] A microplate washer is a clinical testing device used to clean microplates, mainly for removing some unbound substances and impurities after the reaction of the microplate, and reducing errors caused by residues during subsequent testing. A liquid injection needle and a liquid suction needle are provided on the microplate washer head. Here, a set consisting of a liquid injection needle and a liquid suction needle is called a channel. Currently, the model specifications of microplates usually include 96-well specifications such as 12 (rows) × 8 (columns). Therefore, to improve the washing efficiency of the microplate, the specifications of the microplate washer head correspondingly include 16 channels such as 2 (rows) × 8 (columns), 96 channels such as 12 (rows) × 8 (columns), etc.

[0004] To prevent blockage of the liquid injection needle and the liquid suction needle, the microplate washer head generally needs to perform a needle washing operation in the needle washing trough before and after washing the microplate to ensure that the liquid injection needle and the liquid suction needle are in a dredged state, and at the same time, to avoid cross-contamination between the washing of the front and rear microplates.

[0005] Existing needle washing troughs are mostly cylindrical containers. After adding cleaning liquid to the container, the microplate washer head moves to the position of the needle washing trough, and the injection and suction needles of all channels wash the needles simultaneously, that is, the liquid injection needle injects cleaning liquid into the needle washing trough, and the liquid suction needle sucks away the cleaning liquid in the needle washing trough. This is repeated many times to achieve the cleaning of the injection and suction needles, which is likely to cause cross-contamination between the needles of each channel. In addition, currently, during the needle washing process, it is usually necessary to rely on manual observation to determine whether there is a needle blockage state, and someone needs to be on duty all the time, which greatly consumes manpower. Summary of the Invention

[0006] The present invention aims to overcome the deficiencies of the existing technology and provides a multifunctional needle washing trough.

[0007] The present invention is realized through the following technical solutions:

[0008] A multifunctional needle washing trough includes a trough body, and the trough body includes at least one cleaning cavity, and a liquid level detection device is correspondingly arranged on the cleaning cavity.

[0009] Further, a main partition is provided between the cleaning chambers. The purpose is to separate each cleaning chamber through the main partition to reduce cross - contamination.

[0010] Further, the main partition includes a high - level area and a low - level area. There is a height difference between the high - level area and the low - level area. The longitudinal height of the high - level area is greater than that of the low - level area. The liquid - level detection device is arranged on one side close to the high - level area of the main partition. During the needle - washing process, the low - level area of the main partition controls the maximum liquid level height of the cleaning chamber. If liquid overflows between two adjacent cleaning chambers, the overflowed liquid tends to overflow from the low - level area of the main partition. Arranging the liquid - level detection device on one side close to the high - level area of the main partition can reduce the influence of the overflow on the detection accuracy of the liquid - level detection device.

[0011] Further, it further includes a secondary partition. The cleaning chamber is divided into a first cleaning area and a second cleaning area by the secondary partition. The projection of the secondary partition on the main partition overlaps both the high - level area and the low - level area of the main partition. Liquid - level detection devices are correspondingly arranged on both the first cleaning area and the second cleaning area.

[0012] Further, the first cleaning area and the second cleaning area are centrosymmetric. By dividing each cleaning chamber into a first cleaning area and a second cleaning area through the secondary partition, and the first cleaning area and the second cleaning area are centrosymmetrically designed. On the one hand, it ensures the consistency of the liquid volume in the first cleaning area and the second cleaning area, facilitating the unity of the logic control of each liquid - level detection device. On the other hand, the design of the first cleaning area and the second cleaning area in a centrosymmetric manner, and the projection of the secondary partition on the main partition overlaps both the high - level area and the low - level area of the main partition, ensuring that the high - level area and the low - level area also appear on the secondary partition, reducing the influence of the overflow on the detection accuracy of the liquid - level detection device.

[0013] Further, the liquid - level detection device includes a detection board and probes corresponding to the first cleaning area and the second cleaning area. The probes are correspondingly installed on the detection board, and each probe extends into its respective corresponding first cleaning area or second cleaning area. The probes are arranged on one side close to the high - level area of the main partition.

[0014] Further, the secondary partition is in a structure similar to the shape of '5'.

[0015] Further, the number of the main partitions is 7, and the number of the secondary partitions is 8. The tank body is divided into 8 first cleaning areas and 8 second cleaning areas by the main partitions and the secondary partitions. A total of 16 liquid - level detection devices corresponding to the first cleaning area and the second cleaning area are included.

[0016] Further, the multi - functional needle - washing tank described in the present invention is applied to a full - automatic plate washer.

[0017] Combined with the structural characteristics of the present invention, compared with the prior art, a multifunctional needle washing tank provided by the present invention includes a tank body, the tank body includes at least one cleaning cavity, a main partition is arranged between the cleaning cavities, each cleaning cavity is divided into two centrally symmetric cleaning areas by a secondary partition, and each cleaning area is separated by the main partition and the secondary partition to reduce cross-contamination. A liquid level detection device is correspondingly arranged on each cleaning area. The main partition includes a high-level area and a low-level area. The longitudinal height of the high-level area is greater than the longitudinal height of the low-level area. The projection of the secondary partition on the main partition overlaps both the high-level area and the low-level area of the main partition. The liquid level detection device is arranged on one side close to the high-level area of the main partition and the secondary partition. If liquid overflows between two adjacent cleaning cavities, the overflowing liquid tends to overflow from the low-level area of the main partition. Arranging the liquid level detection device on one side close to the high-level area of the main partition can reduce the influence of liquid overflow on the detection accuracy of the liquid level detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of an embodiment of the multifunctional needle washing tank described in the present invention.

[0020] Figure 2 It is a schematic structural diagram of another embodiment of the multifunctional needle washing tank described in the present invention.

[0021] Figure 3 It is a schematic structural diagram of the liquid level detection device described in the present invention.

[0022] Among them, 100 - tank body, 200 - main partition, 210 - high-level area of the main partition, 220 - low-level area of the main partition, 300 - secondary partition, 310 - high-level area of the secondary partition, 320 - low-level area of the secondary partition, 330 - first cleaning area, 340 - second cleaning area, 400 - detection board, 410 - probe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the purpose, technical solutions, and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] As Figure 1 and Figure 2 shown, a multifunctional needle washing groove includes a groove body 100. In this embodiment, the groove body 100 includes 8 cleaning chambers, and 7 main partitions 200 are arranged between the cleaning chambers. The 8 cleaning chambers are separated by the 7 main partitions 200 to reduce cross-contamination. In this embodiment, a liquid level detection device (not shown in the figure) is correspondingly arranged above each of the 8 cleaning chambers, and the liquid level detection device is installed on a detection plate 400.

[0026] As Figure 1 and Figure 2 shown, in an embodiment, the main partition 200 includes a high-level area 210 and a low-level area 220. The longitudinal height of the high-level area 210 is greater than that of the low-level area 220, and the height difference between the high-level area 210 and the low-level area 220 can be flexibly designed according to actual needs. The liquid level detection device is arranged on one side close to the high-level area 210 of the main partition 200. During the needle washing process, the low-level area 220 of the main partition 200 controls the maximum liquid level height of the cleaning chamber. If liquid overflows between two adjacent cleaning chambers, the overflowing liquid tends to overflow from the low-level area 220 of the main partition 200. Arranging the liquid level detection device on one side close to the high-level area 210 of the main partition 200 can reduce the influence of the overflowing liquid on the detection accuracy of the liquid level detection device.

[0027] As Figures 1 to 3As shown, in another embodiment, the cleaning chamber is divided into a first cleaning area 330 and a second cleaning area 340 by a secondary partition 300. The first cleaning area 330 and the second cleaning area 340 are centrosymmetric. The entire tank body 100 is divided into 8 first cleaning areas 330 and 8 second cleaning areas 340 in total. By the centrosymmetric division design of the first cleaning area 330 and the second cleaning area 340 through the secondary partition, the consistency of the liquid volume in the first cleaning area 330 and the second cleaning area 340 is ensured, so as to facilitate the unity of the logic control of each liquid level detection device. The projection of the secondary partition 300 on the main partition 200 overlaps with the main partition 200, ensuring that there are also high-level areas and low-level areas on the secondary partition, reducing the influence of overflow liquid on the detection accuracy of the liquid level detection device. Liquid level detection devices are correspondingly arranged on the 8 first cleaning areas 330 and the 8 second cleaning areas 340. Therefore, a total of 16 liquid level detection devices correspond to 16 cleaning areas. In this embodiment, the liquid level detection device includes a detection board 400 and probes 410 corresponding to the first cleaning area and the second cleaning area. The probes are correspondingly installed on the detection board, that is, 16 probes are correspondingly distributed and installed on one detection board. Each probe extends into its respective corresponding first cleaning area or second cleaning area. Through the drop design of the high-level areas and low-level areas on the main partition and the secondary partition, if overflow occurs between adjacent cleaning chambers and adjacent cleaning areas, the overflowing liquid tends to overflow from the low-level areas to each other. Setting the probes on the side close to the high-level area of the main partition can reduce the influence of overflow liquid on the detection accuracy.

[0028] As Figure 1 and Figure 2 shown, the projection of the secondary partition 300 on the main partition 200 overlaps with both the high-level area 210 and the low-level area 220 of the main partition 200, which means that the projection of the secondary partition 300 on the main partition 200 completely coincides with the main partition 200, that is, the shapes and sizes of the secondary partition 300 and the main partition 200 are the same, so their projections will completely coincide; the projection of the secondary partition 300 on the main partition 200 partially coincides with the main partition 200, that is, as Figure 1 shown, in this embodiment, the secondary partition 300 is a structure similar to the shape of "5" (of course, the secondary partition 300 can also be other shape structures, all falling within the protection scope of the present invention). The secondary partition 300 includes a secondary partition high-level area 310 and a secondary partition low-level area 320. The liquid level detection device is arranged on the side close to the high-level area 210 of the main partition 200 and the high-level area 310 of the secondary partition 300. In this embodiment, for the projection of the secondary partition 300 on the main partition 200, its high-level area 310 and low-level area 320 correspondingly overlap with the high-level area 210 and low-level area 220 of the main partition 200; or other overlapping methods that can achieve the above effects also fall within the protection scope of the present invention.

[0029] As Figure 1 andFigure 2 As shown, the multi-functional needle washing groove of the present invention is applied to a full-automatic plate washer. In this embodiment, the plate washing head of the full-automatic plate washer has a specification of 16 channels in a double row of 2 (rows) × 8 (columns). The entire tank body 100 is divided into 8 first cleaning areas 330 and 8 second cleaning areas 340, a total of 16 cleaning areas corresponding to 16 groups of liquid injection and suction needles of 16 channels. In addition, those skilled in the art can correspondingly increase or decrease the number of cleaning chambers of the tank body, the number of cleaning areas, etc. according to the specification of the plate washing head, all of which fall within the protection scope of the present invention. During use:

[0030] The plate washing head moves to the position of the needle washing groove, and 16 groups of liquid injection needles respectively inject cleaning liquid into the corresponding 16 independently separated cleaning areas. The probe 410 detects the change in the liquid level height in the cleaning area by contact, and the detection board converts it into a change in the liquid level signal, indirectly detecting whether the liquid injection needle is blocked and the degree of needle hole blockage; then, 16 groups of liquid suction needles respectively suck away the cleaning liquid from the corresponding 16 independently separated cleaning areas. The probe detects the change in the liquid level height in the cleaning area by contact, and the detection board converts it into a change in the liquid level signal, indirectly detecting whether the liquid suction needle is blocked and the degree of needle hole blockage.

[0031] The applicant declares that the above-described embodiments only represent the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. For those of ordinary skill in the art, without departing from the concept and scope of the present invention, various changes and improvements can still be made, and these changes and improvements all fall within the scope of the present invention claimed.

[0032] The present invention is not limited to the above embodiments. All embodiments that adopt a structure and method similar to the present invention to achieve the purpose of the present invention are within the protection scope of the present invention.

Claims

1. A multi-functional needle washing groove, characterized in that: it includes a groove body, the groove body includes at least one cleaning cavity, and a liquid level detection device is correspondingly arranged on the cleaning cavity; the liquid level detection device includes a probe, the probe extends into the cleaning cavity, and the probe detects the change of the liquid level height in the cleaning cavity by contact, indirectly detecting whether the injection needle and the liquid suction needle are blocked and the degree of needle hole blockage; a main partition board is arranged between the cleaning cavities; the main partition board includes a high-level area and a low-level area, the longitudinal height of the high-level area is greater than the longitudinal height of the low-level area, and the liquid level detection device is arranged on one side close to the high-level area of the main partition board.

2. The multi-functional needle washing groove according to claim 1, characterized in that: it further includes a secondary partition board, the cleaning cavity is divided into a first cleaning area and a second cleaning area by the secondary partition board, the projection of the secondary partition board on the main partition board overlaps both the high-level area and the low-level area of the main partition board, and liquid level detection devices are correspondingly arranged on both the first cleaning area and the second cleaning area.

3. The multi-functional needle washing groove according to claim 2, characterized in that: the first cleaning area and the second cleaning area are centrosymmetric.

4. The multi-functional needle washing groove according to claim 2, characterized in that: the liquid level detection device includes a detection board and probes corresponding to the first cleaning area and the second cleaning area, the probes are correspondingly installed on the detection board, each probe extends into its respective corresponding first cleaning area or second cleaning area, and the probes are arranged on one side close to the high-level area of the main partition board.

5. The multi-functional needle washing groove according to claim 2, characterized in that: the number of the main partition boards is 7, and the number of the secondary partition boards is 8.

6. The multi-functional needle washing groove according to claim 2, characterized in that: the secondary partition board is in a "5"-shaped structure.

7. The multi-functional needle washing groove according to any one of claims 1 to 6 is applied to a full-automatic plate washer.

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