Urine Analyzer and Its Control Method

Abstract

The present invention discloses a urine analyzer and its control method. The urine analyzer includes a rotary cutting valve, a reagent kit, a sampler, a detection component, a pump, a pipeline, a first valve and a second valve. The rotary cutting valve is provided with a common flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel. One end of the transfer flow channel is communicated with the inner end of the common flow channel, and the other end can be switched with the rotary cutting valve and communicated with the reagent flow channel, the sample flow channel, the detection flow channel and the air flow channel. The reagent kit is provided with a plurality of reagent chambers communicated with the plurality of reagent flow channels. The sampler is provided with a sample collection chamber, and the sample collection chamber is communicated with the outer end of the sample flow channel. The detection component is provided with a detector and a detection chamber, and the detection chamber is communicated with the detection flow channel. The pipeline includes a first section and a second section. Both ends of the first section are communicated with the common flow channel and the outlet of the pump, and both ends of the second section are communicated with the inlet of the pump and a clean water collection chamber for containing clean water. The first valve is connected to the first section. The second valve is connected to the second section.

Description

Technical Field

[0001] The present invention relates to the technical field of urine analyzers, and particularly to a urine analyzer and a control method thereof. Background Art

[0002] With the increase of human lifespan, the importance of healthcare and maintenance has received more and more attention. Urine can reflect a person's health status to a certain extent, and diseases of the pancreas and kidneys can be understood through quantitative analysis of urine components. Urine analysis is an important indicator for detecting a person's physical condition. Usually, it can detect pH, protein, occult blood, specific gravity, glucose, ketone body, urobilinogen, nitrate, white blood cells, bilirubin, vitamin C, etc., reflecting a series of indicators of the body. Usually, urine tests are carried out in hospitals. Due to the shortage of medical resources, after the examinees arrive at the hospital, they often have to queue up for registration, see a doctor, pay fees, collect urine, and wait for the results of batch urine tests and queue up to get the results, which is time-consuming and laborious.

[0003] At present, urine analyzers for household use have emerged on the market, which can realize functions such as flushing and urine collection. Usually, multiple pipelines and complex flushing processes are set. It is difficult to clean the toilet and the pipelines inside the toilet thoroughly, and it is easy to contaminate the urine samples to be tested. Summary of the Invention

[0004] The purpose of the present invention is to provide a urine analyzer and a control method thereof to solve the problems of the prior art.

[0005] To solve the above technical problems, an embodiment of the present invention provides a urine analyzer, which includes:

[0006] A rotary valve, the rotary valve is provided with a common flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel. One end of the transfer flow channel is communicated with the inner end of the common flow channel, and the other end can be switched with the rotary valve and communicated with the reagent flow channel, the sample flow channel, the detection flow channel or the air flow channel;

[0007] A reagent kit, the reagent kit is provided with a plurality of reagent chambers communicated with the plurality of reagent flow channels;

[0008] A sampler, the sampler is provided with a sample collection chamber, and the sample collection chamber is communicated with the outer end of the sample flow channel;

[0009] A detection component, the detection component is provided with a detector and a detection chamber, and the detection chamber is communicated with the detection flow channel;

[0010] A pump;

[0011] A pipeline, the pipeline includes a first section and a second section, both ends of the first section are communicated with the common flow channel and the outlet of the pump, and both ends of the second section are communicated with the inlet of the pump and a clean water collection chamber for containing clean water;

[0012] A first valve, the first valve is connected to the first section;

[0013] A second valve, the second valve is connected to the second section.

[0014] In one embodiment, the rotary cutting valve includes:

[0015] A flow channel plate, the flow channel plate is provided with a central flow channel, a plurality of reagent holes, a sample hole, a detection hole, the common flow channel, a plurality of the reagent flow channels, the air flow channel, the sample flow channel and the detection flow channel, a plurality of the reagent holes are respectively communicated with a plurality of the reagent flow channels, the sample hole is communicated with the sample flow channel, and the detection hole is communicated with the detection flow channel; and

[0016] A rotor, the rotor is rotatably connected to the flow channel plate and is provided with the transfer flow channel, the transfer flow channel can rotate with the rotor and is communicated with a plurality of the reagent flow channels, the sample flow channel, the air flow channel or the detection flow channel.

[0017] In one embodiment, the urine analyzer further includes:

[0018] A first gasket, the first gasket is stacked on the bottom surface of the flow channel plate and is provided with a first central hole and a plurality of first sealing holes, the first central hole is communicated with the central flow channel, and a plurality of the first sealing holes are respectively aligned and communicated with the sample hole, the detection hole and a plurality of the reagent holes; and

[0019] A first support plate, the first support plate is located between the first gasket and the rotor and is provided with a second central hole and a plurality of first circumferential holes, the second central hole is communicated with the first central hole and the inner end of the transfer flow channel; a plurality of the first circumferential holes are respectively aligned and communicated with a plurality of the first sealing holes.

[0020] In one embodiment, a plurality of reagent flow channels are provided on the top surface of the flow channel plate, inner ends of a plurality of the reagent flow channels are respectively communicated with a plurality of the reagent holes, and outer ends diverge radially outward;

[0021] A plurality of the reagent chambers are respectively communicated with outer ends of a plurality of the reagent flow channels.

[0022] In one embodiment, the urine analyzer further includes:

[0023] A second gasket, the second gasket is stacked on the top surface of the flow channel plate and is provided with a plurality of second sealing holes, and the plurality of second sealing holes are respectively aligned and communicated with the outer ends of the plurality of reagent flow channels; and

[0024] A second support plate, the second support plate is located on the top surface of the plurality of second gaskets and is provided with a plurality of second circular holes, and the plurality of second circular holes are respectively aligned and communicated with the plurality of second sealing holes;

[0025] The plurality of reagent chambers are respectively communicated with the plurality of second circular holes.

[0026] In one embodiment, the top surface of the second support plate is further provided with a plurality of threaded holes, and the plurality of threaded holes are respectively communicated with the plurality of second circular holes;

[0027] The rotary cutting valve further includes a plurality of needles, the bottom ends of the plurality of needles are respectively located in the plurality of threaded holes and are threadedly connected to the second support plate, the bottom ends of the plurality of needles are respectively communicated with the plurality of second circular holes, and the top ends are provided with needle tips.

[0028] In one embodiment, the urine analyzer further includes:

[0029] A connecting plate, the connecting plate is located on the top surface of the second support plate and is provided with avoidance holes for avoiding the plurality of needles; and

[0030] A third gasket, the third gasket is located on the top surface of the connecting plate and at the bottom surface of the reagent kit, and the third gasket is provided with a plurality of third sealing holes, and the plurality of third sealing holes are in interference fit with the plurality of needles.

[0031] The present invention also relates to a control method for a urine analyzer, which is applied to the above-mentioned urine analyzer, and includes the steps:

[0032] S1: Switch the rotary cutting valve to the sample flow channel, open the first valve, the pump draws the sample into the transfer flow channel, then switch the rotary cutting valve to the detection flow channel, and the pump pushes the sample in the transfer flow channel into the detection flow channel;

[0033] S2: Close the first valve, open the second valve, the pump draws clear water into the second section, then open the first valve, close the second valve, and the pump draws the clear water in the second section into the common flow channel and the transfer flow channel;

[0034] S3: The pump pushes the clear water in the transfer flow channel into the detection flow channel, and pushes the water and sample in the detection flow channel into the detection chamber and discharges them from the detection chamber;

[0035] S4: Repeat step S2. The pump pumps the water in the second section into the detection flow channel, flows from the detection flow channel into the detection cavity, and the detector detects the clear water in the detection cavity and uses the detection result as a reference value;

[0036] S5: Switch the rotary valve to the air flow channel, draw in external air into the transfer flow channel, then switch the rotary valve to the sample flow channel, and the pump pumps the sample in the sample flow channel into the transfer flow channel;

[0037] S6: Switch the rotary valve to the reagent flow channel, and the pump pumps the reagent in the reagent cavity into the transfer flow channel;

[0038] S7: Switch the rotary valve to the detection flow channel, and the pump pushes the sample and reagent in the transfer flow channel into the detection flow channel and then into the detection cavity from the detection flow channel;

[0039] S8: The detector detects the sample in the detection cavity;

[0040] S9: Repeat step S2. The pump pushes the clear water in the common flow channel into the detection flow channel, flows into the detection cavity from the detection flow channel and then is discharged to clean the detection cavity;

[0041] S10: Switch the rotary valve to the sample flow channel, and then repeat step S2. The pump pushes the clear water in the common flow channel into the sample flow channel, flows into the sample collection cavity from the sample flow channel and then is discharged.

[0042] In one embodiment, before step S5, it is also necessary to determine whether the sample needs to be diluted. If it does not need to be diluted, then proceed to step S5;

[0043] If it needs to be diluted, then in step S5, after the pump pushes the water in the common flow channel into the detection flow channel, switch the rotary valve to the air flow channel, draw in external air into the transfer flow channel to isolate the water in the detection flow channel from the water in the common flow channel, then switch the rotary valve to the detection flow channel, the pump quantitatively inhales the water in the detection flow channel into the transfer flow channel, then switch the rotary valve to the sample flow channel, and the pump pumps the sample in the sample flow channel into the transfer flow channel and mixes it with the water in the transfer flow channel to form a diluted sample;

[0044] The rotary valve is switched to the air flow channel again, and external air is inhaled to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel.

[0045] In one embodiment, if dilution is required, in step S5, the rotary valve is switched to the air flow path again. After inhaling external air to isolate the diluted sample in the transfer flow path from the water in the detection flow path, it is also necessary to determine whether all of the diluted sample is needed for detection;

[0046] If all of the diluted sample is needed, the rotary valve is switched to the detection flow path, and the pump pushes the diluted sample into the detection flow path;

[0047] The rotary valve is switched to the air flow path, the pump inhales a certain amount of air into the transfer flow path, then the rotary valve is switched to the detection flow path, and the pump inhales all of the diluted sample in the detection flow path into the transfer flow path again;

[0048] If only a part of the diluted sample is needed, the rotary valve is switched to the detection flow path, and the pump pushes the diluted sample into the detection flow path;

[0049] The rotary valve is switched to the air flow path, the pump inhales a certain amount of air into the transfer flow path, then the rotary valve is switched to the detection flow path, the pump quantitatively extracts the diluted sample in the detection flow path into the transfer flow path, then the rotary valve is switched to the air flow path, and quantitatively extracts air into the transfer flow path, then the rotary valve is switched to the detection flow path again, and the inhaled air is pushed into the detection flow path to isolate the diluted sample in the detection flow path from the diluted sample in the transfer flow path.

[0050] In one embodiment, the detection component is further provided with:

[0051] A first mixing bend, both ends of the first mixing bend are respectively communicated with the detection flow path and one end of the detection cavity; and

[0052] A second mixing bend, one end of the second mixing bend is communicated with the other end of the detection cavity;

[0053] Wherein, in S7, the rotary valve is switched to the detection flow path, the pump pushes the sample and reagent in the transfer flow path into the detection flow path, and from the detection flow path, it is pushed into the detection cavity through the first mixing bend. Then the pump drives the sample and reagent in the detection cavity to circulate in the first mixing bend, the detection cavity and the second mixing bend, and finally flows into the detection cavity.

[0054] In one embodiment, in S7, the rotary valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and they flow into the second mixing bend from the detection channel through the first mixing bend and the detection cavity in sequence, then stay for 1 s - 2 s, and then the sample and reagent in the second mixing bend are pumped into the detection cavity and the first mixing bend. After multiple cycles, they finally flow into the detection cavity.

[0055] In one embodiment, before step S6, it is also necessary to determine whether multiple reagents need to be extracted. If only one reagent needs to be extracted, then step S6 is performed;

[0056] If multiple reagents need to be extracted, after step S6, the rotary valve also needs to be switched to the detection channel to push the reagent in the transfer channel into the detection channel to mix and react with the sample in the detection channel;

[0057] After waiting for a preset time, the rotary valve is switched to another reagent channel, the pump pumps the reagent in the corresponding reagent cavity into the transfer channel, and then the rotary valve is switched to the detection channel again to push the reagent into the detection channel again.

[0058] In one embodiment, the urine analyzer further includes a first sensor and a second sensor. The first sensor is located in the sample collection cavity, and the second sensor is located in the clean water collection cavity;

[0059] Before step S1, it is also necessary to judge the sample liquid level according to the first sensor and the clean water liquid level according to the second sensor. If both the sample liquid level and the clean water liquid level meet the requirements, then step S1 is performed. If either the sample liquid level or the clean water liquid level does not meet the requirements, the process ends.

[0060] In one embodiment, the urine analyzer further includes a control module. The control module is connected to the pump, the first sensor, the second sensor, the detector, and the rotary valve, and is used for the operation of the pump, the detector, and the rotary valve, and for receiving the information from the first sensor, the second sensor, and the detector;

[0061] Before step S1, the first sensor transmits the detected sample liquid level information to the control module, and the second sensor transmits the detected clean water liquid level information to the control module. If the control module judges that the sample liquid level and the clean water liquid level information meet the requirements, then step S1 is performed. If either the sample liquid level or the clean water liquid level does not meet the requirements, the process ends;

[0062] After step S10, if the control module determines that the detection result is abnormal, steps S1 to S10 are restarted; if the detection result is normal, the next detection item is carried out.

[0063] In one embodiment, the urine analyzer further includes a warning light, and the warning light is connected to the control module;

[0064] After step S10, if the control module determines that the detection results of two consecutive times are abnormal, it controls the warning light to emit a warning signal.

[0065] In one embodiment, the rotary cutting valve is further provided with a washing flow channel;

[0066] The urine analyzer further includes a washing liquid and a washing chamber for containing the washing liquid;

[0067] After steps S1 to S10 are cycled a preset number of times, it is also necessary to determine whether the reagent kit needs to be replaced. If the reagent kit needs to be replaced, the following steps are carried out:

[0068] S01: Close the first valve, open the second valve, the pump pumps clear water into the second section, then open the first valve, close the second valve, and switch the rotary cutting valve to the detection flow channel. The pump pumps the clear water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel;

[0069] S02: Switch the rotary cutting valve to the washing flow channel, and the pump pumps the washing liquid into the transfer flow channel;

[0070] S03: Switch the rotary cutting valve to the detection flow channel, the pump pushes the washing liquid in the transfer flow channel into the detection flow channel and mixes it with the clear water to form a diluted washing liquid, and then pumps the diluted washing liquid into the transfer flow channel;

[0071] S04: Switch the rotary cutting valve to a plurality of reagent flow channels in sequence. And each time after switching, the pump pushes the diluted washing liquid in the transfer flow channel into the reagent flow channel and enters the reagent chamber;

[0072] S05: Switch the rotary cutting valve to the plurality of reagent flow channels again, and the pump pushes the clear water in the common flow channel into the reagent flow channel in sequence and enters the reagent chamber;

[0073] S06: Replace the reagent kit.

[0074] In one embodiment, the rotary cutting valve is further provided with a washing flow channel;

[0075] The urine analyzer further includes a washing liquid and a washing chamber for containing the washing liquid;

[0076] After the steps S1 to S10 are cycled a preset number of times, regular maintenance is required. The control method further includes the steps:

[0077] S001: Close the first valve, open the second valve, the pump pumps clear water into the second section, then open the first valve, close the second valve, and switch the rotary valve to the detection flow path. The pump pumps the clear water in the second section into the common flow path, the transfer flow path and the detection flow path;

[0078] S002: Switch the rotary valve to the washing flow path, and the pump pumps the washing liquid into the transfer flow path;

[0079] S003: Switch the rotary valve to the detection flow path, and the pump pushes the washing liquid in the transfer flow path into the detection flow path to be mixed and diluted with the clear water into a diluted washing liquid;

[0080] S004: Switch the rotary valve to the sample flow path, and the pump pushes the diluted washing liquid in the transfer flow path into the sample flow path and the sample collection chamber;

[0081] S005: Repeat steps S001 to S003, and the pump pushes the diluted washing liquid in the detection flow path into the detection chamber;

[0082] S006: After waiting for a preset time, switch the rotary valve to the sample flow path, close the first valve, open the second valve, the pump pumps clear water into the second section, then open the first valve, close the second valve, the pump pumps the clear water in the second section into the common flow path, the transfer flow path and the sample flow path, and then flows into the sample collection chamber to discharge the diluted washing liquid in the sample collection chamber together;

[0083] S007: Switch the rotary valve to the detection flow path, close the first valve, open the second valve, the pump pumps clear water into the second section, then open the first valve, close the second valve, the pump pumps the clear water in the second section into the common flow path, the transfer flow path and the detection flow path, and finally flows into the detection chamber to discharge the diluted washing liquid in the detection chamber together.

[0084] The urine analyzer of the present invention realizes functions such as flushing and urine collection, and can thoroughly clean the internal pipeline to reduce contamination. Description of the Drawings

[0085] Figure 1 is a perspective view of a urine analyzer according to an embodiment of the present invention.

[0086] Figure 2 is Figure 1Exploded view of the urine analyzer in the illustrated embodiment.

[0087] Figure 3 is Figure 1 Assembly view of the illustrated embodiment after removing the outer shell.

[0088] Figure 4 、 Figure 5 and Figure 6 respectively are Figure 1 Exploded view of the illustrated embodiment after removing the outer shell, two three-way valves, circuit board and detection board.

[0089] Figure 7 、 Figure 8 and Figure 9 respectively are Figure 1 Stereogram of the flow channel plate in the illustrated embodiment.

[0090] Figure 10 is Figure 9 Cross-sectional view of the flow channel plate along line A-A in the illustrated embodiment.

[0091] Figure 11 is Figure 9 Cross-sectional view of the flow channel plate along line B-B in the illustrated embodiment.

[0092] Figure 12 and Figure 13 respectively are Figure 1 Stereogram of the first gasket in the illustrated embodiment.

[0093] Figure 14 and Figure 15 respectively are Figure 1 Stereogram of the second gasket in the illustrated embodiment.

[0094] Figure 16 is Figure 1 Exploded view of the illustrated embodiment after removing the outer shell, two three-way valves, circuit board and detection board.

[0095] Figure 17 is Figure 1 Exploded view of the kit, mounting base and pull ring in the illustrated embodiment.

[0096] Figure 18 Stereogram of the detection board of an embodiment of the present invention.

[0097] Figure 19 is Figure 18 Stereogram of the detection board in the illustrated embodiment.

[0098] Figure 20 is Figure 19 Cross-sectional view of the detection board along line C-C in the illustrated embodiment.

[0099] Figure 21 andFigure 22 It is an exploded view of a kit and a rotary cutting valve according to another embodiment of the present invention.

[0100] Figure 23 It is Figure 21 an exploded view of the kit and the leak-proof member in the illustrated embodiment.

[0101] Figure 24 It is Figure 21 a perspective view of the second gasket in the illustrated embodiment.

[0102] Figure 25 It is Figure 21 a perspective view of the flow channel plate in the illustrated embodiment.

[0103] Figure 26 It is Figure 21 an assembly drawing of the second support plate, the metal ring and the pin in the illustrated embodiment.

[0104] Figure 27 It is a flowchart of the control method of a urine analyzer according to an embodiment of the present invention.

[0105] Figure 28 It is the working liquid circuit diagram of a urine analyzer according to an embodiment of the present invention. Detailed Embodiments

[0106] To make the objectives, technical solutions and advantages of the present invention clearer, the following will elaborate on various embodiments of the present invention in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in various embodiments of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in each claim of the present application can still be achieved.

[0107] Unless the context requires otherwise, throughout the specification and claims, the words "comprise" and its variants, such as "comprising" and "having", should be understood in an open, inclusive sense, that is, interpreted as "including, but not limited to".

[0108] The following will elaborate on each embodiment of the present invention in conjunction with the accompanying drawings to more clearly understand the objectives, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not limitations on the scope of the present invention, but only to illustrate the essential spirit of the technical solutions of the present invention.

[0109] References to "one embodiment" or "an embodiment" in the course of this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Additionally, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0110] As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally used in its inclusive sense of "and / or" unless the context clearly dictates otherwise.

[0111] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, words such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as limiting terms.

[0112] The present invention relates to a toilet and its urine detector 100, which includes a bracket 9, a rotary cutting valve, a reagent kit 2, a sampler, a detection component 3, a pump 6, two three-way valves, a plurality of pipelines, a control module, and a housing 8. Among them, the reagent kit 2, the detection component 3, the pump 6, the two three-way valves, the plurality of pipelines, and the control module are located inside the housing 8. The rotary cutting valve includes a microfluidic chip, a rotor 4, and a driving member 5, and the microfluidic chip includes a flow channel plate 1, a second gasket 44, and a second support plate 45.

[0113] The housing 8 can be installed inside the water tank of the toilet, which is generally a smart toilet. A receiving box is partitioned inside the water tank of the smart toilet, and the receiving box can be used to accommodate various electrical components. Of course, in other embodiments, the urine detector 100 of the present invention can also be adapted to an ordinary toilet and can also be arranged outside the water tank, and the specific installation position of the urine detector 100 is not limited.

[0114] The sampler (not shown in the figure) is located on the inner wall of the toilet. The sampler is provided with a sample collection cavity for collecting samples. Generally, a sensor is also provided in the sample collection cavity for sensing whether a sample is collected in the collection cavity. The sensor can be an infrared sensor or other liquid level sensors, etc., and the specific type of the sensor is not limited.

[0115] The urine detector of the present invention further includes a water storage container for storing clean water. The water storage container is provided with a clean water collection cavity for collecting clean water, and a sensor for sensing the liquid level is also provided in the clean water collection cavity.

[0116] Kit 2 is used to hold various reagents. The microfluidic chip is used to receive samples and reagents. The rotary cutting valve, in cooperation with pump 6, can push the samples and reagents into the detection cavity 32 of the detection component 3. The detection component 3 includes a detector and a detection plate 31. Among them, the detection plate 31 is made of a transparent material and is provided with a detection cavity 32, which is used to receive the samples and reagents in the microfluidic chip. The detector is used to detect the samples in the detection plate 31. The control module is used to control the operation of the driving member 5 and the pump 6, and can also receive the information of the detection component 3 and the sensors in the sample collection cavity or the clean water collection cavity.

[0117] In a specific embodiment, as Figures 7 - 9 shown, the flow channel plate 1 is in the shape of a circular cake formed around a vertical axis and is provided with a central flow channel 11, a plurality of reagent holes 12, a sample hole 14, a detection hole 13, a common flow channel 111, a sample flow channel 141, and a detection flow channel 131. Among them, the central flow channel 11 is located at the center of the flow channel plate 1 and is formed by recessing a preset depth from the bottom surface of the flow channel plate 1 towards the top. The central flow channel 11 extends in the vertical direction and does not penetrate the flow channel plate 1.

[0118] The plurality of reagent holes 12 are arranged at intervals along the circumference formed with the central flow channel 11 as the center and penetrate the flow channel plate 1, that is, the distance between each reagent hole 12 and the central flow channel 11 is the same. As a preferred solution, the plurality of reagent holes 12 are evenly spaced around the vertical axis. The top end of each reagent hole 12 is used to receive the reagent in Kit 2, and the bottom end is used for the reagent to flow into the common flow channel 111.

[0119] The sample hole 14 is formed by recessing from the bottom end of the flow channel plate 1 and the sample hole 14 is also located on the above-mentioned circumference. That is to say, the distance between the sample hole 14 and the central flow channel 11 is the same as the distance between any one of the reagent holes 12 and the central flow channel 11, and it is open towards the bottom surface of the flow channel plate 1.

[0120] The detection hole 13 is also formed by recessing from the bottom end of the flow channel plate 1 and is also located on the above-mentioned circumference, that is, the distance between the detection hole 13 and the central flow channel 11 is the same as the distance between the sample hole 14 or the reagent hole 12 and the central flow channel 11, and it is also open towards the bottom surface of the flow channel plate 1.

[0121] The inner end of the sample flow channel 141 is communicated with the sample hole 14, and the outer end extends radially to the radial outside of the flow channel plate 1. The sample flow channel 141 is a flow channel extending along the radial direction of the flow channel plate 1 and is located inside the flow channel plate 1. The outer end of the sample flow channel is communicated with the sample collection cavity through a pipeline.

[0122] The detection flow channel 131 and the sample flow channel 141 are the same, both being flow channels extending along the radial direction of the flow channel plate 1. The inner end thereof is connected to the detection hole 13, and the outer end extends radially to the radial outside of the flow channel plate 1. The outer end opening of the detection flow channel 131 abuts against the outer end opening of the sample flow channel 141. One pipe of the inspection flow channel is connected to the detection cavity.

[0123] The common flow channel 111 is also a flow channel extending along the radial direction of the flow channel plate 1. However, its inner end is connected to the central flow channel 11, and the outer end is also located on the radial outside of the flow channel plate 1. The outer end of the common flow channel 111 is located above the detection flow channel 131 and the sample flow channel 141. The outer end of the common flow channel 111 is connected to the pump 6 through a pipe. After the pump 6 is started, the air in the common flow channel 111 can be pumped out to form a negative pressure state to pump the reagent and the sample into the common flow channel 111. The pump 6 can also pump air into the common flow channel 111 and drive the reagent or the sample in the common flow channel 111 to flow into the detection cavity 32 through the air.

[0124] The rotor 4 is connected to the driving member 5, as Figure 5 shown. The driving member 5 is a motor, and this motor is installed on the bracket 9.

[0125] The bracket 9 is installed in the housing 8 and a ring-shaped mounting ring 91 is also provided at the top. The output shaft of the motor extends in the vertical direction and the top end is located within the mounting ring 91.

[0126] The rotor 4 is connected to the output shaft of the motor and is also located within the mounting ring 91. The flow channel plate 1 is located on the top surface of the rotor 4 and is fixedly connected to the mounting ring 91 by screws. Starting the motor can drive the rotor to rotate relative to the flow channel plate 1.

[0127] The rotor 4 is located on the bottom surface of the flow channel plate 1 and is provided with a transfer flow channel 41. The rotor 4 and the flow channel plate 1 are concentrically arranged. The inner end 411 of the transfer flow channel 41 is located at the center of the rotor 4 and opens towards the top surface of the rotor 4. The inner end 411 of the transfer flow channel 41 is aligned and connected to the bottom end of the central flow channel 11. The outer end 412 of the transfer flow channel 41 also opens towards the top surface of the rotor 4, and the projection of its outer end in the vertical direction is located on the projection of the circumference where the plurality of reagent holes 12 are located in the vertical direction. That is to say, as the rotor 4 rotates, the outer end 412 of the transfer flow channel 41 can be aligned and connected to the bottom end of any one of the reagent holes 12, the sample holes 14 or the detection holes 13.

[0128] In Figure 5In the illustrated embodiment, the transfer flow channel 41 is formed by a depression on the top surface of the rotor 4. It should be understood that in other embodiments, the transfer flow channel 41 may also be a flow channel located inside the rotor 4, with its outer end 412 and inner end 411 both arranged to open towards the top surface of the rotor 4. The inner end 411 communicates with the central flow channel 11, and the outer end 412 is used to communicate with the reagent hole 12, the sample hole 14, or the detection hole 13. The present invention does not limit the specific implementation manner of the transfer flow channel 41.

[0129] When the inner end 411 of the transfer flow channel 41 communicates with the central flow channel 11 and the common flow channel 111, and the outer end 412 of the transfer flow channel 41 is aligned with the reagent hole 12, it also makes the common flow channel 111, the reagent hole 12, and the reagent chamber 21 communicate. The pump 6 can extract the air in the common flow channel 111 and the reagent hole 12 to form a negative pressure, so as to pump the reagent in the reagent chamber 21 into the common flow channel 111. Of course, when the outer end 412 of the transfer flow channel 41 is aligned with the sample hole 14, the sample in the sample collection chamber can also be pumped into the common flow channel 111 in the same way.

[0130] To increase the sealing performance between the rotor 4 and the flow channel plate 1, a first sealing gasket 42 and a first support plate 43 are also provided between the rotor 4 and the flow channel plate 1, as Figure 5 、 Figure 6 、 Figure 12 and Figure 13 shown. Among them, the first sealing gasket 42 is stacked on the bottom surface of the flow channel plate 1 and is provided with a first central hole 421 and a plurality of first sealing holes 422. The first central hole 421 is a channel penetrating the first sealing gasket 42, and its top end is aligned and communicated with the central flow channel 11. The plurality of first sealing holes 422 are also through holes and are respectively aligned and communicated with the sample hole 14, the detection hole 13, and the plurality of reagent holes 12 one by one.

[0131] The first support plate 43 is located between the first sealing gasket 42 and the rotor 4 and is provided with a second central hole 431 and a plurality of first circumferential holes 432. The second central hole 431 is a through hole penetrating the first support plate 43, and its top end is communicated with the first central hole 421, and its bottom end is communicated with the inner end of the transfer flow channel 41 of the rotor 4. The plurality of first circumferential holes 432 are also through holes and are respectively aligned and communicated with the plurality of first sealing holes 422 one by one.

[0132] The inner end 411 of the transfer flow channel 41 is communicated with the common flow channel 111 through the first central hole 421 and the second central hole 431, and the outer end 412 is communicated with the plurality of reagent holes 12, the detection hole 13, or the sample hole 14 through the plurality of first circumferential holes 432 and the plurality of first sealing holes 422.

[0133] In addition, to enhance the sealing effect, multiple first bottom sealing rings 424 are provided on the bottom surface of the first gasket 42, and multiple first top sealing rings 423 are provided on the top surface. The multiple first bottom sealing rings 424 and the multiple first top sealing rings 423 are respectively arranged around the first central hole 421 and the multiple first sealing holes 422. That is to say, one of the first bottom sealing rings 424 and one of the first top sealing rings 423 are arranged around the first central hole 421, and the remaining first top sealing rings 423 and first bottom sealing rings 424 are all arranged around the first sealing holes 422. The first top sealing rings 423 and the first bottom sealing rings 424 have the same shape and size, and their projections in the vertical direction also overlap. After the rotor 4 and the flow channel plate 1 are fixed, the two squeeze the multiple first top sealing rings 423 and the multiple first bottom sealing rings 424, which can enhance the sealing effect between the rotor 4 and the flow channel plate 1 and prevent samples or reagents from overflowing between the first central hole 421 and the first sealing holes 422.

[0134] Of course, in other embodiments, the first top sealing ring 423 or the first bottom sealing ring 424 can also be provided separately as long as the sealing effect can be ensured.

[0135] As a preferred solution, a cylindrical receiving groove 15 is provided on the bottom surface of the flow channel plate 1. As Figure 8 shown, the depth of the receiving groove 15 exactly accommodates the first gasket 42 and the first support plate 43. The first support plate 43 and the first gasket 42 are fixedly connected to the top wall of the receiving groove 15 by screws.

[0136] Furthermore, a limiting groove 16 recessed towards the radially outer side is provided on the side wall of the receiving groove 15. In the Figure 6 and Figure 8 shown embodiment, there are four limiting grooves 16, and the four limiting grooves 16 are all arranged at intervals. Limiting blocks located in the limiting grooves 16 are respectively provided on the radially outer sides of the first gasket 42 and the first support plate 43, which can limit the rotation of the first support plate 43 and the first gasket 42 driven by the rotor 4.

[0137] The top surface of the flow channel plate 1 is provided with a plurality of reagent flow channels 121. The inner ends of the plurality of reagent flow channels 121 are respectively connected to a plurality of reagent holes 12, and the outer ends diverge radially outward. The outer ends of the reagent flow channels 121 are used to communicate with the reagent chambers 21. The outer ends of the reagent flow channels 121 diverge radially outward from the flow channel plate 1, so that the outer ends of two adjacent reagent flow channels 121 are spaced apart from each other, facilitating an increase in the radial dimension of each reagent chamber 21 and increasing the reagent storage capacity. It should be understood that in other embodiments, one end of all the reagent flow channels 121 needs to be on a circumference and connected to the reagent holes 12, and the other end can be located inside the circumference or diverge outward toward the outside of the circumference. Or, in some embodiments, the top end of the reagent hole 12 is directly connected to the reagent chamber 21, and there is no need to provide the reagent flow channels 121.

[0138] A second gasket 44 is further stacked on the top surface of the flow channel plate 1. As shown in Figure 5 , Figure 6 , Figure 14 and Figure 15 , the second support plate 45 is mounted on the top surface of the second gasket 44. Both the second support plate 45 and the second gasket 44 are fixedly connected to the flow channel plate 1. In the embodiments shown in Figure 14 and 15 , the second gasket 44 and the second support plate 45 are fixed to the flow channel plate 1 by a plurality of screws.

[0139] The second gasket 44 is located between the flow channel plate 1 and the second support plate 45 and is provided with a plurality of second sealing holes 441. The plurality of second sealing holes 441 penetrate through the second gasket 44 and are respectively aligned and communicated with the outer ends of the plurality of reagent flow channels 121.

[0140] The second support plate 45 is provided with a plurality of second circumferential holes 451. The plurality of second circumferential holes 451 respectively penetrate through the second support plate 45 and are respectively aligned and communicated with the plurality of second sealing holes 441.

[0141] The bottom surface of the second gasket 44 is provided with a plurality of second bottom sealing rings 443, and the top surface is provided with a plurality of second top sealing rings 442. Among them, the second bottom sealing rings 443 and the second top sealing rings 442 are respectively annular extending radially and are respectively arranged around the second sealing holes 441. The shapes of the plurality of second bottom sealing rings 443 and the plurality of second top sealing rings 442 are the same, and the projections of the plurality of second bottom sealing rings 443 and the plurality of second top sealing rings 442 in the vertical direction are respectively located outside the projections of the plurality of reagent flow channels 121 in the vertical direction. That is to say, the second bottom sealing rings 443 and the second top sealing rings 442 are used to prevent liquid from overflowing from the reagent flow channels 121.

[0142] In addition, in order to prevent the reagent from flowing radially within the second top sealing ring 442, a plurality of sealing rings 444 are further provided on the top surface of the second gasket 44. The plurality of sealing rings 444 are respectively annular and extend around the plurality of second sealing holes 441, and the plurality of sealing rings 444 are located within the plurality of second top sealing rings 442. Each sealing ring 444 is circumferentially divided into two parts, defined as the outer circumference and the inner circumference. The outer circumference is the part of the sealing ring 444 away from the center of the flow channel plate 1, and the inner circumference is the part close to the center. The outer circumference of each sealing ring 444 overlaps with the radially outer part of the second top sealing ring 442, while the inner circumference is located within the second top sealing ring 442.

[0143] The shape of the second sealing ring 444 is relatively small to prevent the reagent from flowing radially within the second top sealing ring 442.

[0144] A plurality of threaded holes 452 are further provided on the top surface of the second support plate 45. The plurality of threaded holes 452 are respectively communicated with the plurality of second circumferential holes 451. A pin 46 is installed in each threaded hole 452. The bottom end of the pin 46 is provided with threads and can be threadedly connected to the threaded hole 452. The top end is provided with a needle tip, and the needle tip can be inserted into each reagent chamber 21.

[0145] The needle tip of each pin 46 can be inserted into each reagent chamber 21. Its top end is communicated with the reagent chamber 21, and the bottom end is communicated with the outer end of the reagent flow channel 121 through the second circumferential hole 451 and the second sealing hole 441.

[0146] Both the first gasket and the second gasket are made of silica gel or rubber. The second support plate 45 is made of plastic, and the flow channel plate 1 is made of stainless steel. In order to increase the sealing effect of the second gasket and enhance the pressing force between the second support plate 45 and the flow channel plate 1, as a preferred solution, a concave ring 453 is provided on the top surface of the second support plate 45. The concave ring 453 extends along the circumference of the second support plate 45 and is located at the edge of the second support plate 45. A metal ring 454 is installed in the concave ring 453. The metal ring 454 is preferably made of stainless steel, and the metal ring 454, the second support plate 45, and the second gasket are fixed to the flow channel plate 1 by a plurality of screws. The metal ring 454 has a large hardness and can enhance the pressing force on the second gasket 44.

[0147] The plurality of pins 46 can be directly inserted into each reagent chamber 21 of the reagent kit 2. However, as a preferred solution, a connecting plate 47 and another gasket are provided between the second support plate 45 and the reagent kit 2. The gasket and the connecting plate 47 cooperate to increase the sealing performance between the second support plate 45 and the reagent kit 2. Define this gasket as the third gasket 48.

[0148] Specifically, the connecting plate 47 is annular and is provided with a plurality of avoidance holes 471, and the avoidance holes 471 are through holes penetrating the connecting plate 47. The plurality of pins 46 respectively pass through the plurality of avoidance holes 471 and then are inserted into the plurality of reagent chambers 21.

[0149] The third gasket 48 is also annular and is provided with a plurality of third sealing holes 481. After the tops of the plurality of pins 46 pass through the plurality of avoidance holes 471 and the plurality of third sealing holes 481, the tip portions thereof are respectively inserted into the plurality of reagent chambers 21. The tops of the plurality of pins 46 are in interference fit with the plurality of third sealing holes 481 to prevent the reagent in the reagent chamber 21 from leaking out from the pins 46.

[0150] The inner diameter of the third gasket 48 is larger than the inner diameter of the connecting plate 47. The position of the connecting plate 47 close to the center is connected to the bottom end of the reagent kit 2 through a plurality of screws and presses the third gasket 48.

[0151] The connecting plate 47, the third gasket 48 and the reagent kit 2 are fixedly assembled and can be disassembled from the outer shell 8 together.

[0152] The reagent kit 2 is in a cylindrical shape and is located on the top surface of the third gasket 48. The reagent kit 2 is provided with a plurality of reagent chambers 21, and the plurality of reagent chambers 21 extend in the vertical direction. The bottom end of the reagent chamber 21 is provided with an opening, and the tip of the pin 46 can be inserted into the reagent chamber 21 from the opening.

[0153] The top wall of the outer shell 8 is provided with a circular mounting hole 81. As Figure 2 shown, after the reagent kit 2, the connecting plate 47 and the third gasket 48 are assembled, they can be installed into the outer shell 8 from the mounting hole 81, and the tips of the plurality of pins 46 are inserted into the plurality of reagent chambers 21 from the avoidance holes 471 of the mounting plate and the third sealing holes 481 of the third gasket 48.

[0154] A micro switch is further provided at the radially outer edge of the second support plate 45, and the micro switch has a contact. The connecting plate 47 is further provided with a trigger block 24. As Figure 4 shown, the trigger block 24 is aligned with the contact in the vertical direction. After the reagent kit 2 and the connecting plate 47 are installed into the outer shell 8, the trigger block 24 on the connecting plate 47 will touch the contact. That is to say, after the reagent kit 2 is installed in place, the micro switch will be turned on.

[0155] The micro switch is signal-connected or electrically connected to the control module. After the contact of the micro switch is touched, the signal that the reagent kit 2 is installed in place is transmitted to the control module.

[0156] The inner wall of the mounting hole 81 is further provided with a guiding groove 82, and the guiding groove 82 is formed by the depression of the inner wall of the mounting hole 81. A positioning member 23 located in the guiding groove 82 is further provided on the radially outer side of the reagent kit 2, and the positioning member 23 is a long strip-shaped column and extends along the vertical direction of the reagent kit 2.

[0157] When installing the kit 2, the positioning member 23 is matched with the guiding groove 82 to facilitate the positioning and installation of the kit 2.

[0158] The top end of the kit 2 is provided with a pull ring 27. As Figure 1 , Figure 17 shown, the pull ring 27 is annular and is rotatably connected to the top end of the kit 2. The pull ring 27 facilitates pulling the kit 2 to disassemble it from multiple needles 46.

[0159] In Figure 17 the specific embodiment shown, the top surface of the kit 2 is provided with a recessed mounting groove 25. The mounting groove 25 can be a through groove extending in the vertical direction or can be recessed by a preset depth in the vertical direction.

[0160] A mounting seat 22 is installed in the mounting groove 25. The mounting seat 22 is connected to the inner wall of the mounting groove 25 and is provided with a rotating shaft 26 on it. The rotating shaft 26 is rotatably connected to the mounting seat 22. The pull ring 27 is annular and its two ends are respectively connected to the two ends of the rotating shaft 26. Of course, in other embodiments, the rotating shaft 26 can also be fixedly connected to the inner wall of the mounting groove 25, and the two ends of the pull ring 27 are respectively rotatably connected to the two ends of the rotating shaft 26.

[0161] Each reagent chamber of the kit of the present invention communicates with the reagent flow path of the rotary cutting valve. By rotating a rotor, not only can a variety of reagents be driven into the flow path plate, but also the sample and clean water can be driven into the flow path plate. It can not only complete the entire detection process, but also thoroughly clean the internal pipelines, improving the accuracy of the test. Moreover, the kit can hold more reagents, has a long service time, can be used many times, consumes less resources for detection, and after the reagents in the kit are used up, the kit can be directly removed and replaced, and the operation method of replacing the kit is simple.

[0162] The urine analyzer 100 further includes a control module. The control module is connected to the micro switch, the driving member 5, the pump 6 and the detection component 3, and is used for receiving the signals of the micro switch and the detection component 3, and can also be used for controlling the operation of the driving member 5, the pump 6 and the detection component 3.

[0163] In one embodiment, the pump 6 is communicated with the common flow path 111 through three pipelines. The three pipelines are respectively the first pipeline, the second pipeline and the third pipeline. Two three-way valves are also arranged among the three pipelines. The two three-way valves are respectively a water inlet three-way valve 71 and an air inlet three-way valve 72.

[0164] Among them, one end of the first pipeline is communicated with the common flow path 111, and one end of the third pipeline is connected to the plunger pump 6.

[0165] The water inlet three-way valve 71 is respectively connected to the other end of the first pipe, one end of the second pipe, and the water inlet pipe. The water inlet pipe is used to receive the water in the water tank, facilitating the cleaning of the flow channels in the flow channel plate 1 and the detection chamber 32.

[0166] The air inlet three-way valve 72 is respectively connected to the other end of the second pipe, the other end of the third pipe, and the air inlet pipe. The air inlet pipe is used for exhausting or admitting air.

[0167] When a sample needs to be extracted, the motor drives the rotor 4 to rotate, so that the outer end of the transfer flow channel 41 is aligned with the sample hole 14, making the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141 communicate.

[0168] Open the air inlet three-way valve 72 and the water inlet three-way valve 71 simultaneously, so that the first pipe, the second pipe, and the third pipe communicate. At this time, the first pipe, the second pipe, the third pipe, the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141 communicate. The pump 6 extracts the air in the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141. The common flow channel 111 and the sample flow channel 141 form a negative pressure, and the sample can enter the common flow channel 111 from the sample collection chamber.

[0169] When extracting the reagent again, rotate the rotor 4 so that the outer end of the transfer flow channel 41 is aligned with the reagent hole 12. The pump 6 pumps the reagent in the reagent chamber 21 into the common flow channel 111.

[0170] The rotor 4 continues to rotate so that the outer end of the transfer flow channel 41 is aligned with the detection hole 13. At this time, the common flow channel 111, the detection flow channel 131, and the detection chamber 32 communicate.

[0171] Then close the air inlet three-way valve 72 and open the water inlet three-way valve 71. Pump the air in the air inlet pipe into the third pipe, and then open the air inlet three-way valve 72. The third pipe, the second pipe, and the first pipe communicate, pushing the air into the common flow channel 111 to push the sample and reagent in the common flow channel 111 into the detection chamber 32.

[0172] The detection chamber 32 of the detection plate 31 is connected to the detection flow channel 131 through a pipe, and the sample and reagent can flow from the common flow channel 111 into the detection flow channel 131 and the detection chamber 32.

[0173] There are also multiple pipe holes 83 on the housing 8, facilitating the air inlet pipe, the water inlet pipe, the pipe communicating with the sample flow channel 141, and the sewage pipe to penetrate into the housing 8.

[0174] As a preferred solution, a mixing chamber is also provided in the detection plate 31. The mixing chamber communicates with the detection chamber 32, and the width of the mixing chamber is greater than that of the detection chamber 32. The sample and reagent first enter the mixing chamber for mixing and then enter the detection chamber 32 for detection.

[0175] The mixing chamber 303 can be set as a generally circular cavity or can be set with multiple bends. In Figure 20 the illustrated embodiment, the mixing chamber includes a first mixing bend 33 and a second mixing bend 34. Two ends of the first mixing bend 33 are respectively communicated with the detection flow channel 131 and one end of the detection chamber 32, while two ends of the second mixing bend 34 are respectively communicated with one end of the sewage discharge pipe and the other end of the detection chamber 32. The sewage discharge pipe is communicated with the second mixing bend 34, and the other end is located in the toilet.

[0176] The sample and reagent in the common flow channel 111 enter the detection chamber 32 from the first mixing bend 33, then enter the second mixing bend 34, and then stay for 1 s - 2 s. Then, the pump 6 operates in the reverse direction to pump the sample and reagent in the second mixing bend 34 to the detection chamber 32. This is repeated multiple times, and the sample and reagent are repeatedly mixed in the first mixing bend 33, the detection chamber, and the second mixing bend 34, and finally stay in the detection chamber 32 for detection.

[0177] After detection, the pump 6 pushes the sample and reagent in the detection chamber 32 into the second mixing bend 34 in sequence and then into the sewage discharge flow channel, and discharges them from the sewage discharge flow channel into the toilet.

[0178] The present invention also relates to a control method of the urine analyzer 100. As Figure 27 and Figure 28 shown, the urine analyzer 100 of this embodiment also includes the above-mentioned rotary cutting valve, reagent kit 2, detection component 3, and plunger pump 6. The rotary cutting valve is also provided with a common flow channel 111, multiple reagent flow channels 121, a sample flow channel 141, a detection flow channel 131, and a transfer flow channel 41. One end of the transfer flow channel 41 is communicated with the inner end of the common flow channel 111, and the other end can be switched with the rotary cutting valve and communicated with the reagent flow channel 121, the sample flow channel 141, and the detection flow channel 131.

[0179] The difference is that this embodiment does not need to be provided with a water inlet three-way valve, an air inlet three-way valve, a water inlet pipe, and an air inlet pipe. Instead, an air inlet hole and an air flow channel are provided on the flow channel plate of the rotary cutting valve. The air inlet hole is located on the circumference formed by multiple reagent holes and is formed by a depression on the bottom surface of the flow channel plate; the inner end of the air flow channel is communicated with the air inlet hole, and the outer end is open towards the outside of the flow channel plate, and the outer end is used to suck air into the rotary cutting valve. The implementation manner of the air flow channel and the reagent flow channel is the same, and the transfer flow channel 41 can be switched with the rotary cutting valve and communicated with the air flow channel.

[0180] In addition, in this embodiment, the common flow channel 111 is connected to the clean water collection chamber through a pipeline, which includes a first section 106 and a second section 107. Both ends of the first section 106 communicate with the common flow channel 111 and the outlet of the pump 6, and both ends of the second section 107 communicate with the inlet of the pump 6 and the clean water collection chamber for holding clean water. A control valve is provided in the first section 106, and this valve is defined as the first valve 108. Another valve is provided in the second section 107, and this valve is defined as the second valve 109.

[0181] The urine analyzer 100 further includes a first sensor, a second sensor, a fingerprint module, and a warning light. The first sensor is located in the sample collection chamber and is used to sense the sample liquid level information, while the second sensor is located in the clean water collection chamber and is used to sense the clean water liquid level information.

[0182] The control module is connected to the first sensor, the second sensor, the fingerprint module, the detector, the warning light, the rotary cutting valve, and the pump 6, and can control the operation of the plunger pump 6, the detector, and the rotary cutting valve, and receive the information from the first sensor, the second sensor, and the detector.

[0183] As Figure 27 and Figure 28 shown, the control method of the urine analyzer 100 includes the steps:

[0184] S1: The rotary cutting valve is switched to the sample flow channel 141, the first valve 108 is opened, the pump 6 pulls down to draw the sample into the transfer flow channel 41, and then the rotary cutting valve is switched to the detection flow channel 131, and the pump 6 pushes the sample in the transfer flow channel 41 into the detection flow channel 131.

[0185] S2: The first valve 108 is closed, the second valve 109 is opened, the pump 6 draws clean water into the second section 107, and then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 draws the clean water in the second section 107 into the common flow channel 111 and the transfer flow channel 41; Step S2 may need to be repeated multiple times to draw the clean water in the clean water collection chamber into the transfer flow channel 41, and a part of the clean water remains in the first section 106 and the second section 107. Finally, the first valve 108 and the second valve 109 are closed.

[0186] S3: Open the first valve 108, and the pump 6 pushes the clean water in the transfer flow channel 41 into the detection flow channel 131. It is also necessary to push the water and the sample in the detection flow channel 131 into the detection chamber 32 and discharge them from the detection chamber 32.

[0187] If the stroke of the plunger pump 6 is insufficient, the rotary valve first switches to the air flow path. The pump 6 pulls down to draw air into the intermediate flow path 41, and then the rotary valve switches to the detection flow path 131. The plunger pump 6 resets, pushing the water and the sample in the detection flow path 131 into the detection chamber 32 and discharging them from the detection chamber 32. After that, the rotary valve resets, and the reset state of the rotary valve is that the other end of the intermediate flow path 41 is closed and not connected to the air flow path, the detection flow path 131, the sample flow path 141, or the reagent flow path 121.

[0188] The first three steps are to suck the sample into the sample flow path 141 and suck the clear water into the common flow path 111 for subsequent quantitative use.

[0189] S4: Repeat step S2. The pump 6 sucks the clear water into the second section 107, then sucks the water in the second section 107 into the detection flow path 131, and the water flows from the detection flow path 131 into the detection chamber 32. The detector detects the clear water in the detection chamber 32, and the detection result is used as a reference value.

[0190] Of course, if the stroke of the plunger pump 6 is insufficient, after sucking air into the detection flow path 131, it is also necessary to switch the rotary valve to the air flow path. The plunger pump 6 rotates forward to absorb a fixed amount of air, then the rotary valve switches to the detection flow path 131 again, and the plunger pump 6 resets to push the water in the detection flow path 131 into the detection chamber 32 for detection.

[0191] S5: The rotary valve switches to the air flow path, quantitatively extracts external air into the intermediate flow path 41, and then the rotary valve switches to the sample flow path 141. The pump 6 quantitatively sucks the sample in the sample flow path 141 into the intermediate flow path 41. First, air is sucked into the intermediate flow path 41, and then the sample is sucked into the intermediate flow path 41. This part of the air is located between the clear water and the sample in the common flow path 111 to prevent the clear water and the sample in the common flow path 111 from mixing.

[0192] S6: The rotary valve switches to the reagent flow path 121, and the pump 6 sucks the reagent in the reagent chamber 21 into the intermediate flow path 41.

[0193] The reagent chamber 21 and the reagent flow path 121 are in a connected state. Therefore, after installing the reagent kit 2 each time, the reagent in the reagent chamber 21 will be sucked into the reagent flow path 121. Therefore, the reagent in the reagent flow path 121 can be directly quantitatively sucked into the intermediate flow path 41.

[0194] S7: The rotary valve switches to the detection flow path 131, and the pump 6 pushes the sample and the reagent in the intermediate flow path 41 into the detection flow path 131 and then into the detection chamber 32 from the detection flow path 131.

[0195] If the stroke of the plunger pump 6 is insufficient, after the sample and reagent are pushed into the detection flow channel 131, the rotary cutting valve can be switched to the air flow channel, a part of air can be extracted from the outside, and then the rotary cutting valve is switched to the detection flow channel 131 to push the sample and reagent in the detection flow channel 131 into the detection chamber 32.

[0196] S8: The detector detects the sample in the detection chamber 32.

[0197] S9: Repeat step S2, pump clear water into the second section 107 and the common flow channel 111, then push the clear water in the common flow channel 111 into the detection flow channel 131, and discharge it after flowing into the detection chamber 32 from the detection flow channel 131 to clean the detection chamber 32.

[0198] S10: The rotary cutting valve is switched to the sample flow channel 141, and then step S2 is repeated. The pump 6 pushes the clear water in the common flow channel 111 into the sample flow channel 141 and discharges it after flowing into the sample collection chamber from the sample flow channel 141.

[0199] It should be understood that before step S1, after the operator triggers the fingerprint module, the fingerprint module transmits a signal to the control module, and the control module starts the detection step of the urine analyzer 100.

[0200] Moreover, before step S1, the first sensor transmits the detected sample liquid level information to the control module, the second sensor transmits the sensed clear water liquid level information to the control module. If the control module determines that the sample liquid level and the clear water liquid level information meet the requirements, step S1 is performed. If one of the sample liquid level and the clear water liquid level does not meet the requirements, the process ends.

[0201] Optionally, before step S5, it is also necessary to determine whether the sample needs to be diluted. If it does not need to be diluted, step S5 is performed;

[0202] If it needs to be diluted, in step S5, after the pump 6 pushes the water in the common flow channel 111 into the detection flow channel 131, the rotary cutting valve is switched to the air flow channel, and a certain amount of external air is quantitatively extracted into the transfer flow channel 41 to isolate the water in the detection flow channel 131 from the water in the common flow channel 111.

[0203] Then the rotary cutting valve is switched to the detection flow channel 131, and the pump 6 quantitatively inhales the water in the detection flow channel 131 into the transfer flow channel 41.

[0204] Then the rotary cutting valve is switched to the sample flow channel 141, and the pump 6 quantitatively extracts the sample in the sample flow channel 141 into the transfer flow channel 41 and mixes it with the water in the transfer flow channel 41 to form a diluted sample.

[0205] The rotary cutting valve switches to the air flow path again, quantitatively inhaling external air to isolate the diluted sample in the transfer flow path 41 from the water in the detection flow path 131.

[0206] Further, in the step of diluting the sample, that is, after step S5 is completed, that is, after the rotary cutting valve switches to the air flow path again and inhales external air to isolate the diluted sample in the transfer flow path 41 from the water in the detection flow path 131, it is also necessary to determine whether all the diluted samples are required for detection.

[0207] In some detection items, samples with a higher dilution factor are required. At this time, more clear water needs to be drawn into the detection flow path 131, but not all the diluted samples are required for detection during the detection. Therefore, in step S5, that is, before step S6, it is also necessary to determine whether all the samples are required for detection.

[0208] If all the diluted samples are required, the rotary cutting valve switches to the detection flow path 131, and the pump 6 resets to push the diluted sample into the detection flow path 131.

[0209] The rotary cutting valve switches to the air flow path, the pump 6 rotates forward to suck a certain amount of air into the transfer flow path 41, then the rotary cutting valve switches to the detection flow path 131, and the pump 6 sucks all the diluted samples in the detection flow path 131 back into the transfer flow path 41.

[0210] If only a part of the diluted samples is required, the rotary cutting valve switches to the detection flow path 131, and the pump 6 pushes the diluted sample into the detection flow path 131;

[0211] The rotary cutting valve switches to the air flow path, the pump 6 sucks a certain amount of air into the transfer flow path 41, then the rotary cutting valve switches to the detection flow path 131, the pump 6 quantitatively extracts the diluted sample in the detection flow path 131 into the transfer flow path 41, then the rotary cutting valve switches to the air flow path, and quantitatively extracts air into the transfer flow path 41, then the rotary cutting valve switches to the detection flow path 131 again, and pushes the absorbed air into the detection flow path 131 to isolate the diluted sample in the detection flow path 131 from the diluted sample in the transfer flow path 41.

[0212] Preferably, in the embodiment where the first mixing bend 33 and the second mixing bend 34 are provided in the detection plate 31, in step S7, after the rotary valve is switched to the detection flow path 131, the plunger pump 6 pushes the sample and the reagent in the transfer flow path 41 into the detection flow path 131, and then the sample and the reagent flow from the detection flow path 131 and the first mixing bend 33 into the detection chamber 32. Then, after the plunger pump 6 rotates forward for a preset time and then rotates backward for a preset time, it drives the sample and the reagent in the detection chamber 32 to circulate in the first mixing bend 33, the detection chamber 32, and the second mixing bend 34, and finally flows into the detection chamber 32.

[0213] More preferably, S7: The rotary valve is switched to the detection flow path 131, the pump 6 pushes the sample and the reagent in the transfer flow path 41 into the detection flow path 131, and the sample and the reagent flow from the detection flow path 131 into the second mixing bend 34 through the first mixing bend 33 and the detection chamber 32 in sequence. Then, it stays for 1 s - 2 s, and then the sample and the reagent in the second mixing bend 34 are drawn into the detection chamber 32 and the first mixing bend 33. After multiple cycles, finally, it flows into the detection chamber 32.

[0214] During the mixing process, staying for 2 s will increase the mixing effect.

[0215] Optionally, before step S6, it is also necessary to determine whether multiple reagents are to be extracted. If one reagent is required to be extracted, then step S6 is performed;

[0216] If multiple reagents are extracted, after step S6, the rotary valve also needs to be switched to the detection flow path 131 to push the reagent in the transfer flow path 41 into the detection flow path 131 and mix it with the sample in the detection flow path 131 for reaction;

[0217] After waiting for a preset time, the rotary valve is switched to another reagent flow path 121, the pump 6 draws the reagent in the corresponding reagent chamber 21 into the transfer flow path 41, and then the rotary valve is switched to the detection flow path 131 again to push the reagent into the detection flow path 131 again.

[0218] Optionally, after step S10, if the control module determines that the detection result is abnormal, steps S1 to S10 are restarted; if the detection result is normal, the next detection item is performed.

[0219] After step S10, if the control module determines that the detection results are abnormally twice in a row, it controls the warning light to emit a warning signal.

[0220] Optionally, the rotary valve is also provided with a washing flow path. The urine analyzer 100 further includes a washing liquid and a washing chamber for containing the washing liquid;

[0221] After the steps S1 to S10 are cycled a preset number of times, or after a preset time is used, it is also necessary to determine whether the kit 2 needs to be replaced. If the kit 2 needs to be replaced, the following steps are performed:

[0222] S01: The first valve 108 is closed, the second valve 109 is opened, the pump 6 pumps clear water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, the rotary valve is switched to the detection flow path 131, and the pump 6 pumps the clear water in the second section 107 into the common flow path 111, the transfer flow path 41, and the detection flow path 131;

[0223] S02: The rotary valve is switched to the washing flow path, and the pump 6 pumps the washing liquid into the transfer flow path 41;

[0224] S03: The rotary valve is switched to the detection flow path 131, the pump 6 pushes the washing liquid in the transfer flow path 41 into the detection flow path 131 to be mixed and diluted with the clear water into a diluted washing liquid, and then the diluted washing liquid is pumped into the transfer flow path 41;

[0225] S04: The rotary valve is sequentially switched to a plurality of reagent flow paths 121, and each time after the switch, the pump 6 pushes the diluted washing liquid in the transfer flow path 41 into the reagent flow path 121 and enters the reagent chamber 21;

[0226] If the diluted washing liquid is insufficient, steps S01 - S04 need to be repeated to fill each reagent flow path 121 with the diluted washing liquid.

[0227] S05: The rotary valve is switched to a plurality of the reagent flow paths 121 again, and the pump 6 pushes the clear water in the common flow path 111 into the reagent flow path 121 in sequence and enters the reagent chamber 21;

[0228] If the clear water is insufficient, step S01 needs to be repeated to pump a sufficient amount of clear water into the common flow path 111, and then push the clear water into a plurality of reagent flow paths 121, push the clear water into the reagent chamber 21, and wash the reagent flow path 121 again.

[0229] S06: Replace the kit 2.

[0230] Optionally, after the steps S1 to S10 are cycled a preset number of times, regular maintenance is required, and the following steps are also included:

[0231] S001: The first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clear water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, the rotary cutting valve is switched to the detection flow path 131, and the pump 6 pumps the clear water in the second section 107 into the common flow path 111, the transfer flow path 41, and the detection flow path 131;

[0232] S002: The rotary cutting valve is switched to the washing flow path, and the pump 6 pumps the washing liquid into the transfer flow path 41;

[0233] S003: The rotary cutting valve is switched to the detection flow path 131, and the pump 6 pushes the washing liquid in the transfer flow path 41 into the detection flow path 131 to be mixed and diluted with the clear water into diluted washing liquid;

[0234] S004: The rotary cutting valve is switched to the sample flow path 141, and the pump 6 pushes the diluted washing liquid in the transfer flow path 41 into the sample flow path 141 and the sample collection chamber;

[0235] S005: Repeat steps S001 to S003, and the pump 6 pushes the diluted washing liquid in the detection flow path 131 into the detection chamber 32;

[0236] S006: After waiting for a preset time, the rotary cutting valve is switched to the sample flow path 141, the first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clear water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 pumps the clear water in the second section 107 into the common flow path 111, the transfer flow path 41, and the sample flow path 141, and then flows into the sample collection chamber to discharge the diluted washing liquid in the sample collection chamber together;

[0237] S007: The rotary cutting valve is switched to the detection flow path 131, the first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clear water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 pumps the clear water in the second section 107 into the common flow path 111, the transfer flow path 41, and the detection flow path 131, and finally flows into the detection chamber 32 to discharge the diluted washing liquid in the detection chamber 32 together.

[0238] The common flow channel is directly connected to the clean water collection chamber. After the detection is completed, the water in the common flow channel can be directly pushed into the detection chamber or the sample collection chamber for cleaning, so as to improve the operation efficiency of the urine analyzer. Moreover, since the common flow channel is directly connected to the clean water collection chamber, when it is necessary to extract samples and reagents, the common flow channel and the drive pipeline are first filled with clean water, and then the transfer flow channel is filled with air to isolate the water in the common flow channel from the samples or reagents. After the pump is started, the clean water and a small part of the air in the transfer channel are used to drive the reagents and samples to move. Since the clean water is not easily compressed, the samples or reagents can be more accurately extracted into the microfluidic chip, and the detection accuracy can be improved.

[0239] In addition, the urine analyzer 100 of the present invention is applicable to routine urine tests, such as 14-item ascorbic acid tests, including vitamins (C, VC), white blood cells (WBC), urobilinogen (URO), bilirubin (BIL), occult blood (BLD), nitrite (NIT), pH, protein (PRO), urine specific gravity (SG), urine ketone bodies (KET), urine glucose (GLU), urine creatinine (CR), urine calcium (CA), and microalbumin (MA) + urine uric acid + UACR (urine microalbumin / creatinine ratio) + UPCR (urine protein / creatinine ratio) + comprehensive urine uric acid value (based on the CKD-EPI algorithm). In order to enable more types of item tests, multi-ring reagent holes can also be provided on the flow channel plate.

[0240] In one embodiment, as Figures 22 - 26 shown, the flow channel plate 1 is provided with a plurality of first reagent holes 122 and a plurality of second reagent holes 123. The plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged at intervals around the middle flow channel and penetrate the flow channel plate 1 respectively.

[0241] On the top surface of the flow channel plate 1, a first reagent flow channel 124 communicating with the first reagent hole 122 and a second reagent flow channel 125 communicating with the second reagent hole 123 are provided. Both the first reagent flow channel 124 and the second reagent flow channel 125 extend radially. The plurality of first reagent flow channels 124 and the plurality of second reagent flow channels 125 are at different diameters, so that the outer ends of the plurality of first reagent flow channels 124 and the outer ends of the plurality of second reagent flow channels 125 do not flow into the transfer flow channel 41 simultaneously.

[0242] The outer ends of the plurality of first reagent flow channels 124 diverge radially towards the edge of the flow channel plate 1, and the outer ends of the plurality of second reagent flow channels 125 also diverge radially towards the outside. As a preferred solution, the plurality of first reagent holes 122 are arranged at intervals in the circumferential direction, or the plurality of second reagent holes 123 are also arranged at uniform intervals in the circumferential direction. Or the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged at intervals.

[0243] Preferably, the plurality of first reagent channels 124 and the plurality of second reagent channels 125 are also arranged at intervals along the circumferential direction.

[0244] The outer ends of the first reagent channels 124 and the second reagent channels 125 are respectively aligned with each reagent chamber of the reagent kit 2. That is to say, the reagent kit 2 is also provided with a plurality of first reagent chambers 211 and second reagent chambers 212. The outer ends of the plurality of first reagent chambers 211 and the plurality of first reagent channels 124 are aligned and communicated one by one, and the outer ends of the plurality of second reagent chambers 212 and the plurality of second reagent channels 125 are aligned and communicated one by one. That is to say, the plurality of first reagent chambers 211 and the plurality of second reagent chambers 212 are also located on different circumferences.

[0245] In order to match the first reagent channels 124 and the second reagent channels 125, the second sealing holes 441 on the second gasket need to match the outer ends of the first reagent channels 124 and the second reagent channels 125. That is to say, some of the second sealing holes 441 are respectively aligned and communicated with the outer ends of the plurality of first reagent channels 124, and the other part of the second sealing holes 441 are respectively aligned and communicated with the outer ends of the plurality of second reagent channels 125.

[0246] The positions of the second circumferential holes 451 on the second support plate 45, the positions of the plurality of pins 46, the avoidance holes 471 on the connecting plate 47, and the positions of the third sealing holes 481 on the third gasket 48 need to be set according to the positions of the second sealing holes 441, which will not be elaborated here.

[0247] In another embodiment, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are also arranged at intervals on the circumference formed with the central channel 11 as the center, and also penetrate through the flow channel plate 1. Only the plurality of second reagent holes 123 and the plurality of first reagent holes 122 are located on different circumferences and on different diameters. The distance between the plurality of second reagent holes 123 and the central channel 11 can be less than or greater than the distance between the plurality of first reagent holes 122 and the central channel 11.

[0248] The reagent kit 2 can also be provided with a plurality of first reagent chambers 211 and a plurality of second reagent chambers 212. Among them, the plurality of first reagent chambers 211 and the plurality of first reagent holes 122 are respectively communicated, while the plurality of second reagent chambers 212 and the plurality of second reagent holes 123 are respectively communicated.

[0249] In addition, the top surface of the flow channel plate 1 can also be provided with a plurality of first reagent channels 124. The inner ends of the plurality of first reagent channels 124 are respectively communicated with the plurality of first reagent holes 122, and the outer ends diverge radially to the edge of the flow channel plate 1. The inner ends are for the plurality of first reagent holes 122, and the outer ends are for communicating with the plurality of first reagent chambers 211.

[0250] Optionally, a plurality of second reagent channels 125 are provided on the top surface of the flow channel plate 1. The inner ends of the plurality of second reagent channels 125 are respectively communicated with a plurality of second reagent holes 123, and the outer ends diverge towards the outside and are communicated with a plurality of second reagent chambers 212.

[0251] As a preferred solution, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged at uniform intervals, which is convenient for setting the rotation angle of the rotor 4 according to the spacing of the plurality of reagent holes to control the rotation of the rotor 4. Of course, in some embodiments, the spacing between the plurality of first reagent holes 122 and the plurality of second reagent holes 123 can also be arranged randomly.

[0252] The transfer channel 41 on the rotor 4 is a channel formed by a depression on the top surface of the rotor 4. The outer end of the transfer channel 41 can be communicated with a plurality of first reagent holes 122, and the middle part of the transfer channel 41 is also communicated with any one of the second reagent holes 123. Such a design can arrange more reagent chambers in a limited space to detect more items.

[0253] A sealing film 28 is also provided between the connecting plate 47 and the third gasket 48. The sealing film 28 is not punctured before the reagent chamber is used, covering the top opening of the reagent chamber. After the reagent kit 2 is installed on the urine analyzer 100, the insertion needle 46 of the urine analyzer 100 punctures the sealing film 28 and inserts it into the reagent chamber. The sealing film 28 can be a plastic film or a thin film to prevent liquid from flowing out.

[0254] Preferably, the urine analyzer 100 further includes: a leak-proof member 29 provided in the reagent chamber for preventing the reagent from leaking out of the top opening of the reagent chamber.

[0255] Furthermore, as Figure 23 shown, the leak-proof member 29 has a through-hole 291, and the leak-proof member 29 is slidably arranged along the inner wall of the reagent chamber, and the through-hole 291 extends along the extending direction of the reagent chamber, that is, along the vertical direction.

[0256] There is also liquid seal oil in the reagent chamber. The liquid seal oil is located at the top of the reagent for sealing the reagent. The leak-proof member 29 is inserted into the liquid seal oil, and the aperture of the through-hole 291 of the leak-proof member 29 is 4 mm - 5 mm. Optionally, the aperture of the through-hole 291 of the leak-proof member 29 is 4.5 mm, 4.7 mm or 4.8 mm. During use, the reagent is injected into the reagent chamber from the top inlet of the reagent chamber, and then the liquid seal oil is injected. At the same time, the leak-proof member 29 is inserted into the liquid seal oil. While ensuring the storage space in the reagent chamber, the inner diameter of the reagent chamber towards the top inlet area is reduced. Thus, when the urine analyzer 100 vibrates and is inverted during transportation and use, the reagent in the reagent chamber will not leak out due to vibration from the top opening. The outer diameter of the leak-proof member 29 is 0.5 mm - 2 mm smaller than the inner diameter of the reagent chamber. After the reagent is used, the leak-proof member 29 can drop with the liquid level.

[0257] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that, if desired, aspects of the embodiments can be modified to incorporate aspects, features, and concepts of various patents, applications, and publications to provide additional embodiments.

[0258] In view of the foregoing detailed description, these and other variations can be made to the embodiments. Generally speaking, in the claims, the terms used should not be construed as limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents to which these claims are entitled.

[0259] Those of ordinary skill in the art can understand that the above-described embodiments are specific embodiments for implementing the present invention, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A method for controlling a urine tester, characterized in that: The urine tester comprises: A rotary cutting valve, wherein the rotary cutting valve is provided with a common flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel, wherein one end of the transfer flow channel is connected to the inner end of the common flow channel, and the other end can be switched with the rotary cutting valve and connected to the reagent flow channel, the sample flow channel, the detection flow channel or the air flow channel; A reagent kit, wherein the reagent kit is provided with a plurality of reagent chambers communicating with the plurality of reagent flow channels; A sampler, wherein the sampler is provided with a sample collection cavity, and the sample collection cavity is communicated with the outer end of the sample flow channel; A detection component, wherein the detection component is provided with a detector and a detection cavity, and the detection cavity is communicated with the detection flow channel; Pumps; A pipeline, the pipeline comprising a first section and a second section, two ends of the first section are connected to the common flow channel and the outlet of the pump, and two ends of the second section are connected to the inlet of the pump and a clean water collection chamber containing clean water; a first valve connected to the first section; and a second valve connected to the second section; Includes steps: S1: Switch the rotary cutting valve to the sample flow channel, open the first valve, and use the pump to draw the sample into the transfer flow channel. Then switch the rotary cutting valve to the detection flow channel, and use the pump to push the sample in the transfer flow channel into the detection flow channel. S2: close the first valve, open the second valve, and the pump pumps clean water into the second section; then open the first valve, close the second valve, and the pump pumps clean water in the second section into the common flow channel and the transfer flow channel; S3 the pump pushes the clean water in the transfer channel into the detection channel, pushes the water and sample in the detection channel into the detection cavity, and discharges them from the detection cavity; S4: repeating step S2, the pump pumps the water in the second section into the detection channel, and the water flows from the detection channel into the detection cavity, the detector detects the clean water in the detection cavity, and uses the detection result as a reference value; S5: switching the rotary cutting valve to the air flow channel, drawing external air into the transfer flow channel, and then switching the rotary cutting valve to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel; S6: Switching the rotary cutting valve to the reagent flow channel, and the pump draws the reagent in the reagent chamber into the transfer flow channel; S7: Switching the rotary cutting valve to the detection channel, the pump pushes the sample and reagent in the transfer channel into the detection channel, and then pushes them into the detection cavity from the detection channel; S8: the detector detects the sample in the detection chamber; S9: repeating step S2, the pump pushes the clean water in the common flow channel into the detection flow channel, and the clean water flows from the detection flow channel into the detection cavity and then is discharged, so as to clean the detection cavity; S10: Switch the rotary cutting valve to the sample flow channel, and then repeat step S2, the pump pushes the clean water in the common flow channel into the sample flow channel, and the water flows from the sample flow channel into the sample collection cavity and then is discharged.

2. The control method of the urine tester according to claim 1, characterized in that: The rotary cutting valve comprises: a flow channel plate, wherein the flow channel plate is provided with a central flow channel, a plurality of reagent holes, a sample hole, a detection hole, the common flow channel, a plurality of the reagent flow channels, the air flow channel, the sample flow channel and the detection flow channel, the plurality of the reagent holes are respectively connected with the plurality of the reagent flow channels, the sample hole is connected with the sample flow channel, and the detection hole is connected with the detection flow channel; and The rotor is rotatably connected to the flow channel plate and is provided with the transfer flow channel. The transfer flow channel can rotate with the rotor and communicate with a plurality of the reagent flow channels, the sample flow channels, the air flow channels or the detection flow channels.

3. The control method of the urine tester according to claim 2, characterized in that: The urine tester also includes: a first sealing gasket, which is stacked on the bottom surface of the flow channel plate and is provided with a first central hole and a plurality of first sealing holes, wherein the first central hole is communicated with the central flow channel, and the plurality of first sealing holes are respectively aligned with and communicated with the sample hole, the detection hole, and the plurality of reagent holes; and A first support plate, wherein the first support plate is located between the first sealing gasket and the rotor and is provided with a second center hole and a plurality of first circumferential holes, wherein the second center hole is connected with the first center hole and the inner end of the transfer channel; and the plurality of first circumferential holes are respectively aligned with and connected with the plurality of first sealing holes.

4. The control method of the urine tester according to claim 2, characterized in that: A plurality of reagent flow channels are provided on the top surface of the flow channel plate, the inner ends of the plurality of reagent flow channels are respectively connected to the plurality of reagent holes, and the outer ends diverge radially toward the outside; The plurality of reagent chambers are respectively communicated with the outer ends of the plurality of reagent flow channels.

5. The control method of the urine tester according to claim 2, characterized in that: The urine tester also includes: A second sealing gasket, which is stacked on the top surface of the flow channel plate and is provided with a plurality of second sealing holes, wherein the plurality of second sealing holes are respectively aligned with and communicated with the outer ends of the plurality of reagent flow channels; and A second support plate, the second support plate is located on the top surface of the plurality of second sealing pads and is provided with a plurality of second circumferential holes, the plurality of second circumferential holes are respectively aligned with and communicated with the plurality of second sealing holes; The plurality of reagent chambers are respectively communicated with the plurality of second circumferential holes.

6. The control method of the urine tester according to claim 5, characterized in that: The top surface of the second support plate is also provided with a plurality of threaded holes, and the plurality of threaded holes are respectively connected with the plurality of second circumferential holes; The rotary cutting valve also includes a plurality of pins, the bottom ends of which are respectively located in the plurality of threaded holes and threadedly connected to the second support plate, the bottom ends of which are respectively connected to the plurality of second circumferential holes, and the top ends are provided with needle tips.

7. The control method of the urine tester according to claim 6, characterized in that: The urine tester also includes: A connecting plate, the connecting plate is located on the top surface of the second supporting plate and is provided with avoidance holes for avoiding the plurality of the pins; and A third sealing gasket is located on the top surface of the connecting plate and on the bottom surface of the reagent kit. The third sealing gasket is provided with a plurality of third sealing holes, and the plurality of third sealing holes are interference-fitted with the plurality of pins.

8. The control method of the urine tester according to claim 1, characterized in that: Before step S5, it is also necessary to determine whether the sample needs to be diluted. If dilution is not required, proceed to step S5; If dilution is required, in step S5, after the pump pushes the water in the common flow channel into the detection flow channel, the rotary cut valve is switched to the air flow channel, and external air is drawn into the transfer flow channel to isolate the water in the detection flow channel from the water in the common flow channel. The rotary cut valve is then switched to the detection flow channel, and the pump quantitatively sucks the water in the detection flow channel into the transfer flow channel. The rotary cut valve is then switched to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel and mixes it with the water in the transfer flow channel to form a diluted sample. The rotary cutting valve switches to the air flow channel again, and the external air is sucked in to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel.

9. The control method of the urine test instrument according to claim 8, characterized in that: If dilution is required, in step S5, the rotary cutting valve is switched to the air flow channel again, and the external air is sucked in to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel. It is also necessary to determine whether all the diluted samples need to be tested; If all the diluted samples are needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted samples into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump sucks a certain amount of air into the transfer flow channel. Then the rotary cutting valve is switched to the detection flow channel, and the pump sucks all the diluted samples of the detection flow channel into the transfer flow channel again. If only a portion of the diluted sample is needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted sample into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump will suck a certain amount of air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel, and the pump quantitatively extracts the diluted sample from the detection flow channel into the transfer flow channel. The rotary cutting valve is then switched to the air flow channel, and quantitatively extracts air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel again, and the absorbed air is pushed into the detection flow channel, thereby isolating the diluted sample from the detection flow channel from the diluted sample from the transfer flow channel.

10. The control method of the urine tester according to claim 1, characterized in that: The detection component also includes: a first mixing bend, wherein two ends of the first mixing bend are respectively connected to the detection flow channel and one end of the detection cavity; and a second mixing bend, one end of the second mixing bend being connected to the other end of the detection cavity; Among them, in S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and pushes them from the detection channel from the first mixing bend into the detection cavity, and then the pump drives the sample and reagent in the detection cavity to circulate in the first mixing bend, the detection cavity and the second mixing bend, and finally flows into the detection cavity.

11. The control method of the urine tester according to claim 10, characterized in that: In S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and flows from the detection channel into the second mixing bend through the first mixing bend and the detection chamber in sequence, and then stays for 1s-2s, and then the sample and reagent in the second mixing bend are drawn into the detection chamber and the first mixing bend, and after multiple cycles, finally flow into the detection chamber.

12. The control method of the urine tester according to claim 1, characterized in that: Before step S6, it is necessary to determine whether to extract multiple reagents. If only one reagent needs to be extracted, proceed to step S6; If multiple reagents need to be extracted, after step S6, the rotary cutting valve needs to be switched to the detection channel to push the reagents in the transfer channel into the detection channel to mix and react with the samples in the detection channel; After waiting for a preset time, the rotary cutting valve is switched to another reagent flow channel, and the pump draws the reagent in another corresponding reagent chamber into the transfer flow channel, and then the rotary cutting valve is switched to the detection flow channel again, and the reagent is pushed into the detection flow channel again.

13. The control method of the urine tester according to claim 1, characterized in that: The urine tester further comprises a first sensor and a second sensor, wherein the first sensor is located in the sample collection chamber, and the second sensor is located in the clean water collection chamber; Before step S1, it is also necessary to determine the sample liquid level according to the first sensor and the clean water liquid level according to the second sensor. If both the sample liquid level and the clean water liquid level meet the requirements, step S1 is performed; if one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends.

14. The control method of the urine tester according to claim 13, characterized in that: The urine test instrument further includes a control module, which is connected to the pump, the first sensor, the second sensor, the detector and the rotary cutting valve, and is used for the operation of the pump, the detector and the rotary cutting valve, and receives information from the first sensor, the second sensor and the detector; Before step S1, the first sensor transmits the detected sample liquid level information to the control module, and the second sensor transmits the detected clean water liquid level information to the control module. If the control module determines that the sample liquid level and the clean water liquid level information meet the requirements, step S1 is performed. If one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends; After step S10, the control module determines that the detection result is abnormal, and restarts steps S1 to S10; if the detection result is normal, the next detection item is performed.

15. The control method of the urine test instrument according to claim 14, characterized in that: The urine test instrument further comprises a warning light, and the warning light is connected to the control module; After step S10, the control module determines that two consecutive detection results are abnormal, and then controls the warning light to send out a warning signal.

16. The control method of the urine tester according to claim 1, characterized in that: The rotary cutting valve is also provided with a washing flow channel; The urine test instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, it is necessary to determine whether the reagent kit needs to be replaced. If the reagent kit needs to be replaced, the following steps are performed: S01: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S02: switching the rotary cutting valve to the washing channel, and the pump pumping the washing liquid into the transfer channel; S03: the rotary cutting valve is switched to the detection channel, the pump pushes the washing liquid in the transfer channel into the detection channel to mix with clean water to dilute it into a diluted washing liquid, and then the diluted washing liquid is pumped into the transfer channel; S04: switching the rotary cutting valve to multiple reagent flow channels in sequence, and after each switching, the pump pushes the dilution washing solution in the transfer flow channel into the reagent flow channel and into the reagent chamber; S05: the rotary cutting valve is switched to the plurality of reagent flow channels again, and the pump pushes the clean water in the common flow channel into the reagent flow channels and into the reagent chamber in sequence; S06: Replace the reagent kit.

17. The control method of the urine test instrument according to claim 1, characterized in that: The rotary cutting valve is also provided with a washing flow channel; The urine test instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, regular maintenance is required. The control method further includes the steps of: S001: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S002: Switch the rotary cutting valve to the washing channel, and the pump draws the washing liquid into the transfer channel; S003: Switch the rotary cutting valve to the detection flow channel, and the pump pushes the washing liquid in the transfer flow channel into the detection flow channel to mix with clean water to dilute it into diluted washing liquid; S004: Switch the rotary cutting valve to the sample flow channel, and the pump pushes the dilution washing solution in the transfer flow channel into the sample flow channel and the sample collection chamber; S005: repeating steps S001 to S003, the pump pushes the diluted washing liquid in the detection channel into the detection cavity; S006: After waiting for a preset time, the rotary cutting valve is switched to the sample flow channel, and the first valve is closed, the second valve is opened, and the pump pumps clean water into the second section, and then the first valve is opened, the second valve is closed, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the sample flow channel, and then flows into the sample collection chamber, and the diluted washing liquid in the sample collection chamber is discharged together; S007: Switch the rotary cutting valve to the detection flow channel, close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the detection flow channel, and finally flows into the detection chamber to discharge the diluted washing liquid in the detection chamber.

Images