Cleaning station with adjustable cleaning effect

Abstract

The cleaning station with the adjustable cleaning effect comprises a cleaning station body and a pressing cap, the cleaning station body is provided with a cleaning channel and a liquid inlet channel, and the cleaning channel sequentially comprises a sealing section, a fixing section, a confluence section communicated with the liquid inlet channel, an adjusting section and a liquid discharging section from top to bottom; the pressing cap comprises a fixing part located on the outer side of the pressing cap, a sealing part in sealing fit with the sealing section, a connecting part fixedly connected with the fixing section and an adjusting part from top to bottom, and the adjusting part is in clearance fit with the confluence section; any one or two of the adjusting section and the adjusting part are of a conical structure. The depth of the pressing cap inserted into the cleaning channel can be adjusted, and any one or two of the adjusting section and the adjusting part is / are designed into a conical structure, so that when the height of the pressing cap is changed, an annular gap (namely the circulation sectional area) between the bottom of the pressing cap and the cleaning channel is changed; when the flowing sectional area changes, the cleaning flow speed of the cleaning liquid changes accordingly, and the cleaning effect is adjusted by changing the flow speed.

Description

Technical Field

[0001] This utility model relates to the field of cleaning sample dispensing needles for diagnostic equipment, and in particular to a cleaning station with adjustable cleaning effect. Background Technology

[0002] In vitro diagnostics (IVD) refers to products and services that obtain clinical diagnostic information by testing human samples (blood, body fluids, tissues, etc.) outside the human body using in vitro testing technologies, thereby determining diseases or bodily functions. Currently, approximately 80% of clinical diagnostic information comes from in vitro diagnostic technologies, making in vitro diagnostics an important component of human disease prevention, diagnosis, and treatment.

[0003] In vitro diagnostic equipment (such as biochemical analyzers, nucleic acid analyzers, and uric acid analyzers) is an essential instrument for in vitro diagnostics. During the testing process, samples, reagents, and cleaning solutions are typically added using a syringe needle. To avoid cross-contamination between samples or between samples and reagents, the syringe needle needs to be cleaned after each sample or reagent aspiration. Currently, external cleaning of syringe needles is done at a cleaning station, where a cleaning pump pumps cleaning solution into the station. However, due to batch differences in pumps and valves, and variations in pipe and connector connections, the flow rate of the cleaning solution varies. This results in incomplete cleaning of the syringe's outer wall and tip, leading to problems such as instrument contamination, significant differences in cleaning effectiveness between different instruments, and inconsistent results, ultimately affecting the accuracy of the test results. Summary of the Invention

[0004] In view of this, the present invention proposes a cleaning station with adjustable cleaning effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The adjustable cleaning station of this utility model includes a station body and a pressure cap. The station body has a vertically opened cleaning channel and a liquid inlet channel communicating with the cleaning channel. The cleaning channel consists of a sealing section, a fixing section, a confluence section communicating with the liquid inlet channel, an adjusting section, and a drain section from top to bottom. The pressure cap includes, from top to bottom, a fixing part located outside the pressure cap, a sealing part that seals with the sealing section, a connecting part fixedly connected to the fixing section, and an adjusting part. The adjusting part is clearance-fitted with the confluence section, and its bottom is located in the adjusting section. Any one or both of the adjusting section and the adjusting part are conical structures, and the bottom diameter of the adjusting section is greater than or equal to the diameter of the drain section.

[0007] The beneficial effects are as follows: The depth of the pressure cap inserted into the cleaning channel is adjustable. By designing one or both of the adjustment sections and adjustment parts as conical structures, the annular gap between the bottom of the pressure cap and the cleaning channel (the cross-sectional area of ​​this gap is the flow cross-sectional area) changes when the height of the pressure cap changes. This allows for adjustment of the flow cross-sectional area, which in turn changes the cleaning flow rate of the cleaning solution. By adjusting the flow rate, the cleaning effect is adjusted, overcoming the technical problem of inadequate cleaning of the outer wall and tip of the sample needle caused by flow rate differences due to pump-to-pump, valve-to-pump, and pipeline design differences in the cleaning pipeline. This invention can be mass-produced for various models of chemiluminescence immunoassay analyzers, standardizing the cleaning flow rate for instruments of the same model, thereby eliminating instrument-to-instrument differences and ensuring the cleaning effect of the sample needle in each instrument.

[0008] Preferably, the diameter of the sealing part is larger than the diameter of the connecting part, and the connection between the sealing part and the connecting part has a first limiting platform; the diameter of the sealing section is larger than the diameter of the fixing section, and the connection between the sealing section and the fixing section has a second limiting platform to limit the insertion depth of the sealing part. When the second limiting platform and the first limiting platform of this invention cooperate, it represents the maximum insertion depth of the pressure cap.

[0009] Preferably, the fixed section is an internally threaded section, and the connecting part has an external thread that mates with the fixed section. The length of the connecting part is less than the length of the fixed section, and the outer diameter of the adjusting part is less than the outer diameter of the connecting part. This ensures a clearance fit between the adjusting part and the manifold / adjusting section, thus ensuring the cleaning effect of the sampling needle. The fixed section and the connecting part are threaded together, allowing the position of the pressure cap to be adjusted simply by screwing, making operation simple and convenient.

[0010] In a preferred embodiment of this utility model, the adjusting section is a conical structure, and the lower part of the adjusting part is a cylindrical or conical structure, ensuring that the flow cross-sectional area between the pressure cap and the cleaning channel changes with the change of the pressure cap installation depth, thereby realizing the adjustment of the flow cross-sectional area.

[0011] In a preferred embodiment of this utility model, the adjusting section is a cylindrical structure with a diameter smaller than that of the confluence section, and the lower part of the adjusting part is a conical structure, so as to ensure that the flow cross-sectional area between the pressure cap and the cleaning channel changes with the change of the pressure cap installation depth, thereby realizing the adjustment of the flow cross-sectional area.

[0012] Preferably, the cleaning station with adjustable cleaning effect according to the present invention further includes a limiting member for limiting the pressure cap, the limiting member being detachably installed on the top surface of the cleaning station body; the outer peripheral surface of the fixing part has limiting teeth arranged at intervals, the limiting teeth forming a limiting groove between each pair, and the locking head of the limiting member being inserted into the limiting groove to fix the pressure cap.

[0013] Preferably, an annular mounting groove is provided on the outer peripheral surface of the sealing part, and a sealing ring is embedded in the mounting groove to ensure the sealing performance between the pressure cap and the cleaning channel.

[0014] Compared with existing technologies, the advantages of this invention are as follows: The depth of the pressure cap inserted into the cleaning channel is adjustable. One or both of the adjustment sections and adjustment parts are designed as conical structures, so that the annular gap between the bottom of the pressure cap and the cleaning channel (the cross-sectional area of ​​this gap is the flow cross-sectional area) changes when the height of the pressure cap changes, thereby adjusting the flow cross-sectional area. When the flow cross-sectional area changes, the cleaning flow rate of the cleaning solution (in actual cleaning, purified water is often used) changes accordingly. By adjusting the flow rate, the cleaning effect is adjusted, overcoming the technical problem of inadequate cleaning of the outer wall and tip of the sample needle caused by flow rate differences due to pump-to-pump, valve-to-pump, and pipeline design differences in the cleaning pipeline. This invention can be mass-produced for various models of chemiluminescence immunoassay analyzers, standardizing the cleaning flow rate of instruments of the same model, thereby eliminating instrument-to-instrument differences and ensuring the cleaning effect of the sample needle in each instrument. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 yes Figure 1 Top view.

[0017] Figure 3 yes Figure 1 A schematic diagram of the structure of the medium pressure cap.

[0018] Figure 4 yes Figure 1 A schematic diagram of the structure of the washing station.

[0019] Figure 5 This is a first schematic diagram of the adjusting section and adjusting part in this utility model.

[0020] Figure 6 yes Figure 5 A planar schematic diagram of the annular gap.

[0021] Figure 7 This is a second schematic diagram of the adjusting section and adjusting part in this utility model.

[0022] Figure 8 This is a third schematic diagram of the adjusting section and adjusting part in this utility model. Detailed Implementation

[0023] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0024] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1-6 As shown, the adjustable cleaning station of this utility model includes a cleaning station body 1 and a pressure cap 2 (the pressure cap 2 has a through hole that mates with the sample needle F). The cleaning station body 1 has a vertically opened cleaning channel 1.1 and a liquid inlet channel 1.2 communicating with the cleaning channel 1.1. A quick connector 1.3 is screwed onto the outer port of the liquid inlet channel 1.2 and connected to the cleaning pipeline of the instrument. The cleaning channel 1.1 consists of a sealing section 1.1a, a fixing section 1.1b, a confluence section 1.1c communicating with the liquid inlet channel 1.2, an adjusting section 1.1d, and a drain section 1.1e from top to bottom. The diameter of the sealing section 1.1a is larger than the diameter of the fixing section 1.1b, the diameter of the fixing section 1.1b is greater than or equal to the diameter of the confluence section 1.1c, and the bottom diameter of the adjusting section 1.1d is greater than or equal to the diameter of the drain section 1.1e.

[0027] The pressure cap 2, from top to bottom, includes a fixing part 2.1, a sealing part 2.2, a connecting part 2.3, and an adjusting part 2.4. The fixing part 2.1 is located outside the cleaning channel 1.1. The sealing part 2.2 is sealed to the sealing section 1.1a of the cleaning channel 1.1 through a sealing ring 3. The connecting part 2.3 of the pressure cap 2 is connected to the fixing section 1.1b of the cleaning channel 1.1, thereby fixing the pressure cap 2 during cleaning. The outer diameter of the adjusting part 2.4 is smaller than the diameter of the confluence section 1.1c, so that the adjusting part 2.4 and the confluence section 1.1c are in clearance fit. The bottom surface of the adjusting part 2.4 is located inside the adjusting section 1.1d. The cross-sectional area of ​​the annular gap M between the outer diameter of the bottom of the adjusting part 2.4 and the adjusting section 1.1d is the flow cross-sectional area.

[0028] In actual processing, at least one of the adjusting section 1.1d and the adjusting part 2.4 has a conical structure, so that the flow cross-sectional area changes accordingly when the installation depth of the adjusting part 2.4 changes. When the adjusting section 1.1d has a conical structure, the lower part of the adjusting part 2.4 can be as follows: Figure 5 As shown in the conical structure, the lower the installation depth of the adjusting part 2.4, the smaller the flow cross-sectional area; the higher the installation height of the adjusting part 2.4, the larger the flow cross-sectional area. The flow cross-sectional area can be adjusted by adjusting the height of the adjusting part 2.4, thereby adjusting the cleaning flow rate, ensuring the cleaning effect of the sample needle, avoiding incomplete cleaning, and overcoming instrument differences caused by differences in pump spacing, valve spacing, and tubing layout in the cleaning pipeline. Of course, when the adjusting section 1.1d is a conical structure, the adjusting part 2.4 can also be... Figure 7 The cylindrical structure shown; when the regulating section 1.1d adopts a cylindrical structure, the diameter of the regulating section 1.1d is smaller than the diameter of the confluence section 1.1c, and the diameter of the regulating section 1.1d is equal to the diameter of the drainage section (of course, the diameter of the regulating section 1.1d can also be larger than the diameter of the drainage section). The lower part of the regulating part 2.4 is a conical structure, see details below. Figure 8 .

[0029] Combination Figure 1 and Figure 3-4 It can be seen that the diameter of the sealing part 2.2 is larger than the diameter of the connecting part 2.3, and the connection between the sealing part 2.2 and the connecting part 2.3 has a first limiting platform; the diameter of the sealing section 1.1a is larger than the diameter of the fixing section 1.1b, and the connection between the sealing section 1.1a and the fixing section 1.1b has a second limiting platform that limits the insertion depth of the sealing part 2.2. When the second limiting platform and the first limiting platform cooperate with each other, it is the maximum installation depth of the pressure cap 2. At this time, the flow cross-sectional area between the pressure cap 2 and the cleaning channel 1.1 is the smallest.

[0030] Combination Figure 1 It can be seen that an annular mounting groove 2.5 is provided on the outer peripheral surface of the sealing part 2.2, and a sealing ring 3 is embedded in the mounting groove 2.5 to ensure the sealing performance between the pressure cap 2 and the cleaning channel 1.1.

[0031] In actual installation, a threaded connection is used between the pressure cap 2 and the cleaning channel 1.1. Figure 1 It can be seen that the fixed section 1.1b is an internally threaded section, and the connecting part 2.3 has an external thread that mates with the fixed section 1.1b. The length of the connecting part 2.3 is less than the length of the fixed section 1.1b, and the outer diameter of the adjusting part 2.4 is less than the outer diameter of the connecting part 2.3, ensuring a clearance fit between the adjusting part 2.4 and the manifold section 1.1c and adjusting section 1.1d, thereby ensuring the flow clearance of the cleaning fluid. In actual installation, the pressure cap 2 can be screwed into the cleaning channel 1.1. The flow cross-sectional area can be adjusted by adjusting the screw-in length to achieve flow rate adjustment, thereby ensuring the cleaning effect of the sampling needle.

[0032] Of course, in actual installation, the pressure cap 2 and the cleaning channel 1.1 can also be connected by plugging or snapping. For example, multiple annular positioning grooves can be opened at intervals on the inner wall of the fixed section 1.1b, and a protrusion can be designed on the outer periphery of the fixing part 2.1 of the pressure cap 2. The protrusion and the positioning groove can be matched and snapped to achieve the fixed installation of the pressure cap 2. When adjusting, pull upward or press the pressure cap 2 to make the protrusion snap into different positioning grooves to adjust the position of the pressure cap 2.

[0033] Combination Figure 4 It can be seen that the cleaning station of this utility model also includes a limiting component 4, which is installed on the top of the cleaning station body 1. In actual production, each instrument needs to be debugged before leaving the factory. The cleaning flow rate is determined by adjusting the flow cross-sectional area. After debugging, the limiting component 4 is used to fix and limit the pressure cap 2 to prevent the pressure cap 2 from changing position. Combined with Figure 1 It can be seen that the limiting component 4 is fixed to the top surface of the washing station body 1 by bolts. It has a locking head 4.1, and the outer circumferential surface of the fixing part 2.1 has evenly distributed limiting teeth 2.6. The limiting teeth 2.6 form limiting grooves between each pair. The locking head 4.1 of the limiting component 4 is inserted into the limiting groove to fix the pressure cap 2. During debugging, the installation height of the adjusting part 2.4 at the bottom of the pressure cap 2 is adjusted to adjust the flow rate. The cleaning effect is adjusted by adjusting the flow rate to ensure the cleaning effect of the sampling needle. When the flow rate meets the cleaning requirements, the locking head 4.1 of the limiting component 4 is inserted into the locking groove, and the limiting component 4 is fixed to the washing station body 1 by using countersunk bolts to fix the pressure cap 2.

[0034] Of course, in actual installation, a movable part that moves up and down with the pressure cap and can fix the pressure cap 2 can also be used. For example, the fixing part of the pressure cap 2 can be designed as a disc-shaped structure, and a vertical insertion rod (with vertically spaced positioning protrusions) can be installed at the bottom of the fixing part. Corresponding insertion holes (with positioning grooves with the same spacing as the positioning protrusions) can be opened on the washing station body so that the insertion rod is positioned and inserted into the insertion hole, thereby fixing the pressure cap while satisfying the up and down movement of the pressure cap.

[0035] In other embodiments of this utility model, the connection between the quick-connect plug 1.3 and the liquid inlet channel 1.2 can also be similar to the connection relationship between the pressure cap and the cleaning channel, so as to adjust the liquid injection flow rate, further ensure the cleaning effect of the sample needle, and ensure that the sample needle is completely cleaned.

[0036] This invention installs a height-adjustable pressure cap 2 inside the washing station body 1. By adjusting the installation position of the pressure cap 2, the flow cross-sectional area is adjusted, thereby adjusting the cleaning flow rate. The cleaning effect of the sampling needle is adjusted by regulating the cleaning flow rate, ensuring the cleaning effect of the outer wall and tip of the sampling needle, eliminating the instrument difference caused by differences in pump, valve, and pipeline layout in the cleaning pipeline, and ensuring the cleaning effect of the sampling needle in each instrument.

[0037] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cleaning station with adjustable cleaning effect, comprising a station body and a pressure cap, wherein the station body has a vertically opened cleaning channel and a liquid inlet channel communicating with the cleaning channel, characterized in that: The cleaning channel consists of, from top to bottom, a sealing section, a fixing section, a confluence section communicating with the liquid inlet channel, an adjusting section, and a drain section; the pressure cap consists of, from top to bottom, a fixing part located outside the pressure cap, a sealing part sealingly fitted with the sealing section, a connecting part fixedly connected to the fixing section, and an adjusting part. The adjusting part is clearance-fitted with the confluence section, and its bottom is located in the adjusting section; any one or both of the adjusting section and the adjusting part are conical structures, and the bottom diameter of the adjusting section is greater than or equal to the diameter of the drain section.

2. The cleaning station with adjustable cleaning effect according to claim 1, characterized in that: The diameter of the sealing part is larger than the diameter of the connecting part, and the connection between the sealing part and the connecting part has a first limiting platform; the diameter of the sealing section is larger than the diameter of the fixing section, and the connection between the sealing section and the fixing section has a second limiting platform that limits the insertion depth of the sealing part.

3. The cleaning station with adjustable cleaning effect according to claim 1, characterized in that: The fixed section is an internally threaded section, and the connecting part has an external thread that mates with the fixed section. The length of the connecting part is less than the length of the fixed section, and the outer diameter of the adjusting part is less than the outer diameter of the connecting part.

4. The cleaning station with adjustable cleaning effect according to claim 3, characterized in that: The adjustment section has a conical structure, and the lower part of the adjustment section has a cylindrical or conical structure.

5. The cleaning station with adjustable cleaning effect according to claim 3, characterized in that: The regulating section is a cylindrical structure with a diameter smaller than that of the confluence section, and the lower part of the regulating section is a conical structure.

6. The cleaning station with adjustable cleaning effect according to claim 1, characterized in that: It also includes a limiting component for limiting the pressure cap, the limiting component being detachably installed on the top surface of the washing station body; The outer peripheral surface of the fixing part has spaced limiting teeth, and the limiting teeth form limiting grooves between each pair of limiting teeth. The locking head of the limiting member is inserted into the limiting groove.

7. The cleaning station with adjustable cleaning effect according to claim 1, characterized in that: An annular mounting groove is provided on the outer circumferential surface of the sealing part, and a sealing ring is embedded in the mounting groove.

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