CN113695322B - A sampling needle cleaning device and cleaning method thereof - Google Patents

Abstract

The invention discloses a sampling needle cleaning device and a cleaning method thereof. The device includes a sampling needle, a cleaning swab sleeved on the outside of the sampling needle, a first cleaning assembly for cleaning the inner wall of the sampling needle, a second cleaning assembly for cleaning the outer wall of the sampling needle, and the first cleaning assembly and the second cleaning assembly respectively. The main cleaning drive element connected to the cleaning component; the two ends of the first cleaning component are respectively connected with the sampling needle and the main cleaning drive component, and the main cleaning drive component controls the first cleaning component to deliver the cleaning liquid to the inner wall of the sampling needle for cleaning; the second cleaning The two ends of the component are respectively connected with the cleaning swab and the main cleaning driving element, and the main cleaning driving element controls the second cleaning component to deliver the cleaning liquid to the cleaning swab, and the cleaning swab is used to clean the outer wall of the sampling needle. The present invention controls the first cleaning component and the second cleaning component to clean the inner and outer walls of the sampling needle through the main cleaning drive element, which has the advantages of convenient cleaning and short time consumption to improve the service life of device components.

Description

A sampling needle cleaning device and cleaning method thereof

technical field

The invention relates to the technical field of medical devices, in particular to a sampling needle cleaning device and a cleaning method thereof.

Background technique

In the current sampling needle sample analyzer, the sampling needle and the inner wall of the sampling line are usually called the main sources of carryover contamination. After the sample distribution is completed, some samples will still be stained on the inner and outer walls of the sampling needle, and this part of the sample has not been cleaned. Clean will affect the measurement of the next sample. In order to reduce the carryover of the sampling needle and the inner wall of the sampling line, usually increase the cleaning volume or increase the cleaning pressure, but increasing the cleaning volume will increase the consumption of reagents and lead to prolonged time. Increasing the cleaning pressure will Increase the load on the components and reduce their service life.

Contents of the invention

The object of the present invention is to provide a sampling needle cleaning device and its cleaning method, aiming to solve the problem of long time consumption and heavy load on device parts due to the large consumption of cleaning liquid and high cleaning pressure in the cleaning process of the existing sampling needle device. question.

In order to solve the above-mentioned technical problems, the object of the present invention is achieved through the following technical solutions: a sampling needle cleaning device is provided, which is characterized in that it comprises: a sampling needle, a cleaning swab sleeved on the outside of the sampling needle, for a first cleaning assembly for cleaning the inner wall of the sampling needle, a second cleaning assembly for cleaning the outer wall of the sampling needle, and a main cleaning drive element respectively connected to the first cleaning assembly and the second cleaning assembly;

The two ends of the first cleaning assembly are respectively connected with the sampling needle and the main cleaning driving element, and the main cleaning driving element is used to control the first cleaning assembly to deliver the cleaning liquid to the inner wall of the sampling needle for cleaning; the second The two ends of the cleaning component are respectively connected with the cleaning swab and the main cleaning driving element, the main cleaning driving element is used to control the second cleaning component to deliver the cleaning liquid to the cleaning swab, and the cleaning swab is used for sampling Clean the outer wall of the needle.

In addition, the technical problem to be solved by the present invention is to provide a sampling needle cleaning method, which includes:

Control the normally-on end of the third switching element to communicate with the first switching end, and draw the cleaning liquid from the cleaning liquid reagent barrel through the main cleaning drive element;

Control the normally-on end of the third switching element to communicate with the second switching end, control the main cleaning drive element to deliver cleaning liquid to the cleaning swab to clean the outer wall of the sampling needle, and discharge the cleaned cleaning liquid into the The negative pressure source component;

The fifth switching element is opened, and the cleaned cleaning liquid is discharged from the liquid outlet of the cleaning swab into the ninth pipeline, and then discharged into the negative pressure source assembly through the ninth pipeline.

In addition, the technical problem to be solved by the present invention is to provide a sampling needle cleaning method, which also includes:

Controlling the normally-on end of the third switching element to communicate with the first switching end, and sucking the cleaning liquid from the cleaning liquid reagent bucket through the main cleaning drive element;

Control the normally-on end of the third switching element to communicate with the second switching end, control the main cleaning drive element to deliver cleaning liquid to the inner wall of the sampling needle for cleaning, and discharge the cleaned cleaning liquid into the negative Pressure source components.

The embodiment of the invention discloses a sampling needle cleaning device and a cleaning method thereof. The device includes a sampling needle, a cleaning swab sleeved on the outside of the sampling needle, a first cleaning assembly for cleaning the inner wall of the sampling needle, a second cleaning assembly for cleaning the outer wall of the sampling needle, and the first cleaning assembly and the second cleaning assembly respectively. The main cleaning drive element connected to the cleaning component; the two ends of the first cleaning component are respectively connected with the sampling needle and the main cleaning drive component, and the main cleaning drive component controls the first cleaning component to deliver the cleaning liquid to the inner wall of the sampling needle for cleaning; the second cleaning The two ends of the component are respectively connected with the cleaning swab and the main cleaning driving element, and the main cleaning driving element controls the second cleaning component to deliver the cleaning liquid to the cleaning swab, and the cleaning swab is used to clean the outer wall of the sampling needle. The present invention controls the first cleaning component and the second cleaning component to clean the inner and outer walls of the sampling needle through the main cleaning drive element, which has the advantages of convenient cleaning and short time consumption to improve the service life of device components.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

1 is a schematic diagram of a sampling needle cleaning device provided by an embodiment of the present invention;

Fig. 2 is a schematic flow chart of a sampling needle cleaning method provided by an embodiment of the present invention;

Fig. 3 is another schematic flow chart of the sampling needle cleaning method provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of a sub-flow of the sampling needle cleaning method provided by the embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and/or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and/or collections thereof.

It should also be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.

It should also be further understood that the term "and/or" used in the description of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

Please refer to Fig. 1, an embodiment of the present invention provides a sampling needle cleaning device, including: a sampling needle SP, a cleaning swab SZ sleeved on the outside of the sampling needle SP, a first cleaning assembly for cleaning the inner wall of the sampling needle SP, a The second cleaning assembly for cleaning the outer wall of the sampling needle SP and the main cleaning drive element A2 connected to the first cleaning assembly and the second cleaning assembly;

The two ends of the first cleaning assembly are respectively connected with the sampling needle SP and the main cleaning driving element A2, and the main cleaning driving element A2 is used to control the first cleaning assembly to deliver the cleaning liquid to the inner wall of the sampling needle SP for cleaning; the two ends of the second cleaning assembly The ends are respectively connected with the cleaning swab SZ and the main cleaning driving element A2, the main cleaning driving element A2 is used to control the second cleaning component to deliver the cleaning liquid to the cleaning swab SZ, and the cleaning swab SZ is used to clean the outer wall of the sampling needle SP .

In this embodiment, the sampling needle cleaning device is used to clean the inner and outer walls of the sampling needle SP after sampling. The main cleaning driving element A2 may be a cleaning syringe, and the main cleaning driving element A2 is used to absorb the cleaning liquid and transport the cleaning liquid to Sampling the inner and outer walls of the sampling needle SP and cleaning the inner and outer walls of the sampling needle SP.

The process of cleaning the inner wall of the sampling needle SP is as follows: absorb the cleaning liquid through the main cleaning drive element A2, and input the cleaning liquid into the first cleaning component, and the cleaning liquid flows through the first cleaning component and then reaches the inner wall of the sampling needle SP, thereby concentrating on the first cleaning component that flows through. Clean the pipeline of the cleaning component and the inner wall of the sampling needle SP.

The process of cleaning the outer wall of the sampling needle SP is as follows: absorb the cleaning solution through the main cleaning drive element A2, and input the cleaning solution into the second cleaning component, the cleaning solution flows through the second cleaning component and reaches the cleaning swab SZ, and the cleaning swab SZ Clean the outer wall of the sampling needle SP.

In this embodiment, the first cleaning assembly and the second cleaning assembly are controlled by the main cleaning drive element A2 to clean the inner and outer walls of the sampling needle SP respectively, which has the advantages of convenient cleaning and short time consumption to improve the life of the device components.

In one embodiment, the first cleaning assembly includes a first pipeline TP1, a first switching element SV1, a second pipeline TP2, an auxiliary cleaning driving element A1, a third pipeline TP3, a second switching element SV2 and The fourth pipeline TP4; the first pipeline TP1 is also connected to the sampling needle SP, and the fourth pipeline TP4 is also connected to the main cleaning driving element A2.

Each pipeline in this embodiment is a sampling pipeline, the first switching element SV1 and the second switching element SV2 are switch valves, and the first switching element SV1 is used to control the connection between the first pipeline TP1 and the second pipeline TP2. Intermittent connection, the auxiliary cleaning driving element A1 is respectively connected to the second pipeline TP2 and the third pipeline TP3, and the second switching element SV2 is used to control the disconnection between the third pipeline TP3 and the fourth pipeline TP4.

This embodiment further describes the cleaning process of the inner wall of the sampling needle SP, specifically:

After the main cleaning driving element A2 absorbs the cleaning liquid, the first switching element SV1 and the second switching element SV2 are opened, and the cleaning liquid is sequentially input into the fourth pipeline TP4, the second switching element SV2, and the third pipe through the main cleaning driving element A2. Road TP3, auxiliary cleaning drive element A1, second pipeline TP2, first switching element SV1, and first pipeline TP1, and finally reach the inner wall of the sampling needle SP. During this process, the cleaning liquid cleans all the paths it flows through; It should be noted that the auxiliary cleaning drive element A1 here is used as a syringe for drawing samples during the blood collection stage, and it is also used as a cleaning syringe during the cleaning stage of this embodiment. The cleaning waste liquid in the inner wall of the needle SP is squeezed out.

In one embodiment, the second cleaning assembly includes a fifth pipeline TP5, a seventh pipeline TP7, a fourth switching element SV4, and an eighth pipeline TP8 connected in sequence, and the fifth pipeline TP5 is also connected to the main cleaning drive element A2, the eighth pipeline TP8 is also connected to the liquid inlet of the cleaning swab SZ.

Each of the pipelines in this embodiment is a sampling pipeline, the fourth switching element SV4 is a switch valve, and the fourth switching element SV4 is used to control the disconnection between the seventh pipeline TP7 and the eighth pipeline TP8.

This embodiment further describes the cleaning process of the outer wall of the sampling needle SP, specifically:

After the main cleaning driving element A2 absorbs the cleaning liquid, the fourth switching element SV4 is turned on, and the cleaning liquid is sequentially input into the fifth pipeline TP5, the seventh pipeline TP7, the fourth switching element SV4 and the eighth pipe through the main cleaning driving element A2. Road TP8, finally reaches the inside of the cleaning swab SZ, and cleans the outer wall of the sampling needle SP through the cleaning swab SZ. During this process, the cleaning liquid cleans all the paths that flow through; The sampling needle SP moves upwards under the control of the movement mechanism, so that the outer wall of the sampling needle SP moves in the cleaning swab SZ, so that the entire outer wall of the sampling needle SP is fully cleaned, and the cleaning effect is better.

In one embodiment, the sampling needle cleaning device further includes: a third switching element SV3, a sixth pipeline TP6, and a cleaning liquid reagent bucket D;

The fourth pipeline TP4 or the fifth pipeline TP5 is connected to the normally-on end of the third switching element SV3, and the two ends of the sixth pipeline TP6 are respectively connected to the first switching end of the third switching element SV3 and the cleaning solution reagent bucket D , the seventh pipeline TP7 is connected to the second switching end of the third switching element SV3.

In this embodiment, the third switching element SV3 is a switching valve with one normally-on end and two switching ends, and the normally-on end can be selectively connected between the two switching ends; the sixth pipeline TP6 is a sampling pipeline; cleaning The liquid reagent barrel D stores cleaning liquid, and the cleaning liquid reagent barrel D is used for the main cleaning drive element A2 to take.

Before cleaning the inner and outer walls of the sampling needle SP, it is necessary to pre-absorb the cleaning liquid from the cleaning liquid reagent barrel D through the main cleaning drive element A2. The specific suction process is: connect the normally-on end of the third switching element SV3 Switch the end connection to connect the main cleaning drive element A2 and the cleaning solution reagent bucket D; then control the main cleaning driving component A2 to perform the suction action, and the cleaning solution can be sucked out from the cleaning solution reagent bucket D and sequentially follow the sixth pipeline TP6 , the third switching element SV3 and the fifth pipeline TP5 reach the main cleaning driving element A2, after the suction is completed, connect the normally-on end of the third switching element SV3 to the second switching end, so that the main cleaning driving element A2 and the cleaning liquid The reagent barrel D is disconnected, and the preparation of the cleaning solution before cleaning can be completed. Then clean the inner and outer walls of the sampling needle SP according to the aforementioned cleaning process.

In one embodiment, the sampling needle cleaning device further includes: a negative pressure source assembly C, a sixth switching element SV6, and a pressure sensor B2; the seventh pipeline TP7 is connected to the negative pressure source assembly C through the sixth switching element SV6; the pressure sensor B2 is set on the fourth pipeline TP4 or the fifth pipeline TP5 and is used to detect the pressure in the pipeline, and the sixth switching element SV6 is used to control the negative pressure source assembly C and the seventh pipeline TP7 and when the sixth switching element SV6 is turned on, the negative pressure in the negative pressure source assembly C is introduced into the second cleaning assembly and the first cleaning assembly; when the sixth switching element SV6 When closed, multiple times of cleaning of the inner wall and outer wall of the sampling needle SP are respectively realized through the driving of the main cleaning driving element A2.

In this embodiment, in order to improve the effect of cleaning the inner wall of the sampling needle SP and reduce the consumption of cleaning fluid, a negative pressure source assembly C, a sixth switching element SV6 and a pressure sensor B2 are provided, wherein the negative pressure source assembly C is a vacuum chamber , used to provide negative pressure, the sixth switching element SV6 is a switching valve; specifically:

Based on the foregoing description of the process of cleaning the inner wall of the sampling needle SP, when the main cleaning drive element A2 continuously extrudes the cleaning liquid to the first cleaning assembly and the inner wall of the sampling needle SP, the cleaning liquid flows toward the side of the sampling needle SP in the sampling pipeline. Squeeze the needle port to increase the pressure in the sampling pipeline. At this time, the pressure sensor B2 installed on the fourth pipeline TP4 or the fifth pipeline TP5 detects that the pressure in the pipeline rises. When the pressure in the pipeline When the pressure rises to the preset pressure threshold, the sixth switching element SV6 is automatically controlled to open, connecting the negative pressure source component C and the first cleaning component. Due to the pressure difference between the negative pressure source component C and the first cleaning component, the negative pressure The negative pressure in the pressure source assembly C is quickly introduced into the first cleaning assembly to reduce the pressure in the pipeline, and then the sixth switching element SV6 is quickly closed, during which the main cleaning drive element A2 is kept extruding continuously. Based on this, the sampling The pressure in the pipeline repeatedly exceeds the pressure threshold and then decreases. Using this pressure fluctuation to repeatedly impact the inside of the sampling pipeline and the inner wall of the sampling needle SP can complete the cleaning of the sampling pipeline and the inner wall of the sampling needle SP more efficiently. The consumption of cleaning fluid is also reduced.

In one embodiment, the sampling needle cleaning device further includes: a ninth pipeline TP9 and a fifth switching element SV5, one end of the ninth pipeline TP9 is connected to the liquid outlet of the cleaning swab SZ, the other end of the ninth pipeline TP9 One end is connected to the negative pressure source component C through the fifth switching element SV5.

In this embodiment, the ninth pipeline TP9 and the fifth switching element SV5 are set as the waste liquid recovery channel for recovering the cleaning waste liquid generated during the cleaning process; storage space.

Specifically, before cleaning the inner wall of the sampling needle SP, the upward movement of the sampling needle SP is controlled by the movement mechanism so that the needle port of the sampling needle SP is located in the cleaning swab SZ, and the fifth switching element SV5 is opened to communicate with the negative pressure source assembly C and the cleaning swab. Swab SZ, the cleaning waste liquid generated during the cleaning process is finally discharged from the needle port of the sampling needle SP to the cleaning swab SZ, and then the cleaning swab SZ is discharged to negative pressure through the ninth pipeline TP9 and the fifth switching element SV5 In the source assembly C; while cleaning the outer wall of the sampling needle SP, cleaning waste liquid is generated in the cleaning swab SZ, which is also discharged into the negative pressure source assembly C through the ninth pipeline TP9 and the fifth switching element SV5.

In one embodiment, the sampling needle cleaning device also includes: a waste liquid bucket E; the waste liquid bucket E is connected to the negative pressure source assembly C and is used to collect the waste liquid and gas temporarily stored in the negative pressure source assembly C; it is convenient for recycling .

In one embodiment, the sampling needle cleaning device further includes: a waste liquid pump LP, and the negative pressure source assembly C is connected to the waste liquid barrel E through the waste liquid pump LP, and the waste liquid pump LP is used to discharge the waste liquid in the negative pressure source assembly C The liquid waste gas is pumped into the waste liquid bucket E. The suction provided by the waste liquid pump LP can discharge the waste liquid or gas in the negative pressure source assembly C into the waste liquid bucket E better and faster.

In one embodiment, the sampling needle cleaning device further includes: an air pressure sensor B1;

In this embodiment, during the cleaning process, the negative pressure source assembly C continuously delivers negative pressure. After a long period of use, when the air pressure sensor B1 detects that the air pressure in the negative pressure source assembly C is lower than the preset air pressure threshold, it will automatically Control the start of the waste liquid pump LP and discharge the waste liquid or gas in the negative pressure source assembly C into the waste liquid bucket E, and make the negative pressure source assembly C reach a preset negative pressure.

Please refer to FIG. 2, which is a schematic flowchart of a cleaning method of a sampling needle cleaning device provided by an embodiment of the present invention;

As shown in Figure 2, the method includes steps S201-S203.

S201. Control the normally-on end of the third switching element SV3 to communicate with the first switching end, and absorb the cleaning liquid from the cleaning liquid reagent barrel D through the main cleaning driving element A2;

S202. Control the normally-on end of the third switching element SV3 to communicate with the second switching end, control the main cleaning drive element A2 to deliver the cleaning solution to the cleaning swab SZ to clean the outer wall of the sampling needle SP, and transfer the cleaned cleaning solution to the cleaning swab SZ. Discharge into negative pressure source component C.

S203, open the fifth switching element SV5, discharge the cleaned cleaning solution from the liquid outlet of the cleaning swab SZ into the ninth pipeline TP9, and discharge it into the negative pressure source assembly C through the ninth pipeline TP9.

In this embodiment, steps S201-S303 are a method of cleaning the outer wall of the sampling needle SP. It should be noted that all valves are closed before cleaning, specifically:

After the sampling is finished, the outer wall of the sampling needle SP will have sample liquid remaining. When the moving mechanism drives the sampling needle SP to move upward to the initial position, the outer wall of the sampling needle SP will clean the swab SZ as the sampling needle SP moves. and finally the needle port of the sampling needle SP will be located in the cleaning swab SZ. In this embodiment, the outer wall of the sampling needle SP can be cleaned synchronously during this process. It should be noted that, before the moving mechanism drives the sampling needle SP to move upward, the normally-on end of the third switching element SV3 is connected to the second switching end in advance, and the main cleaning drive element A2 is used to suck the cleaning solution from the cleaning solution reagent bucket D. liquid.

The specific cleaning process: during the upward movement of the sampling needle SP driven by the movement mechanism, the normally-on end of the third switching element SV3 is controlled to communicate with the second switching end, and the fourth switching element SV4 and the fifth switching element are turned on. SV5, at this time, through the main cleaning driving element A2, the cleaning liquid is sequentially delivered to the Clean the swab SZ, thereby cleaning the outer wall of the sampling needle SP.

In an embodiment, as shown in FIG. 3 , the method further includes steps S301-S302.

S301. Control the normally-on end of the third switching element SV3 to communicate with the first switching end, and absorb the cleaning liquid from the cleaning liquid reagent bucket D through the main cleaning driving element A2;

S302. Control the normally-on end of the third switching element SV3 to communicate with the second switching end, control the main cleaning drive element A2 to deliver the cleaning liquid to the inner wall of the sampling needle SP for cleaning, and discharge the cleaned cleaning liquid into the negative pressure source assembly c.

In this embodiment, steps S301-S302 are a method of cleaning the inner wall of the sampling needle SP, which has the advantages of reducing the consumption of cleaning agent, saving cleaning time, and reducing the pressure load on the device components.

Specifically, as shown in FIG. 4, step S302 includes:

S401. Control the normally-on end of the third switching element SV3 to communicate with the second switching end, and open the first switching element SV1 and the second switching element SV2, and control the main cleaning drive element A2 to push out the cleaning liquid and keep the thrust to make the cleaning liquid Flow through the first cleaning component into the sampling needle SP to clean the inner wall of the sampling needle SP;

In this step, the normally-on end of the third switching element SV3 is connected to the second switching end, so as to prevent the cleaning liquid from flowing back into the cleaning liquid reagent barrel D; then open the first switching element SV1 and the second switching element SV2, and Control the main cleaning driving element A2 to push out the cleaning liquid, so that the cleaning liquid follows the fourth pipeline TP4, the second switching element SV2, the third pipeline TP3, the auxiliary cleaning driving element A1, the second pipeline TP2, the first switching element SV1, the inner wall of the first pipeline TP1 and the sampling needle SP are conveyed, and the inner walls of each pipeline and the sampling needle SP are cleaned during the conveying process.

S402. When it is detected that the pressure in the first cleaning component reaches the preset pressure threshold, control the sixth switching element SV6 to perform multiple switching operations, and in each switching operation, open the sixth switching element SV6 to communicate with the negative pressure source The component C and the first cleaning component introduce the negative pressure in the negative pressure source component C into the pipeline of the first cleaning component and reduce the pressure, and then close the sixth switching element SV6 after the pressure reduction is completed.

In this step, the main cleaning drive element A2 is continuously controlled to push out the cleaning liquid, and the pressure sensor B2 is used to detect the pressure in the pipeline of the first cleaning component in real time. Large, the cleaning liquid is squeezed to the needle port of the sampling needle SP, and the liquid pressure rises) and reaches the preset pressure threshold (can be 100kpa), the sixth switching element SV6 is opened, at this time, due to the negative pressure source component C and the first There is a large pressure difference between the pipelines of the cleaning components, and the negative pressure in the negative pressure source component C will be quickly introduced into the pipeline of the first cleaning component, so that the pressure in the pipeline of the first cleaning component is reduced and is less than the pressure threshold , and then close the sixth switching element SV6, during which the main cleaning drive element A2 continues to push out the cleaning liquid, so that after closing the sixth switching element SV6, the pressure of the pipeline of the first cleaning assembly continues to rise and reaches the pressure threshold again (because However, the SP port of the sampling needle is very small, and the pipeline is still squeezed when the cleaning liquid is continuously pushed out), after the pressure in the pipeline reaches the pressure threshold again, the sixth switching element SV6 is turned on again, and the negative pressure source component C is used to provide negative pressure. pressure so that the pressure in the pipeline decreases again and is less than the hydraulic pressure threshold; based on this, through the cooperation of the hydraulic pressure detection of the pressure sensor B2 and the multiple switching operations of the sixth switching element SV6, the liquid pressure of the cleaning liquid is kept at the negative pressure of the vacuum chamber. The pressure value and the pressure threshold fluctuate, and the pressure fluctuation is used to repeatedly impact the pipeline of the first cleaning component and the inner wall of the sampling needle SP, so that the cleaning of each pipeline and the inner wall of the sampling needle SP can be completed more efficiently.

S403. Turn on the fifth switching element SV5, discharge the cleaned cleaning solution from the inner wall of the sampling needle SP into the cleaning swab SZ, and discharge it into the negative pressure source assembly C through the ninth pipeline TP9.

In this step, it should be noted that during the cleaning process, the needle port of the sampling needle SP is located in the cleaning swab SZ, and the fifth switching element SV5 is turned on during the cleaning process, and the cleaning waste liquid after cleaning passes through the cleaning swab The liquid outlet of the sub-SZ is discharged into the ninth pipeline TP9, and discharged into the negative pressure source assembly C from the fifth switching element SV5.

In one embodiment, the sampling method of the sampling needle SP device also includes:

When the air pressure sensor B1 detects that the air pressure in the negative pressure source assembly C is lower than the preset air pressure threshold, the waste liquid pump LP is started to discharge the liquid or gas in the negative pressure source assembly C into the waste liquid barrel E.

In this embodiment, in the process of cleaning the sampling needle SP, the negative pressure source assembly C is used many times to provide negative pressure. The negative pressure source assembly C is a cavity with a certain volume. When the air pressure sensor B1 detects that the negative pressure source When the air pressure in component C is lower than the preset air pressure threshold, the waste liquid pump LP will be automatically activated to discharge the liquid or gas in the negative pressure source component C into the waste liquid bucket E, and make the negative pressure source component C reach the preset value. barometric pressure threshold.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the technical scope disclosed in the present invention. Modifications or replacements shall all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (13)

1. A sampling needle cleaning device, comprising: the sampling needle comprises a sampling needle, a cleaning swab sleeved on the outer side of the sampling needle, a first cleaning component used for cleaning the inner wall of the sampling needle, a second cleaning component used for cleaning the outer wall of the sampling needle, and a main cleaning driving element respectively connected with the first cleaning component and the second cleaning component;

the first pipeline and the fourth pipeline at two ends of the first cleaning component are respectively connected with the sampling needle and the main cleaning driving element, and the main cleaning driving element is used for controlling the first cleaning component to convey cleaning liquid to the inner wall of the sampling needle for cleaning; the fifth pipeline and the eighth pipeline at two ends of the second cleaning component are respectively connected with the main cleaning driving element and the cleaning swab, the main cleaning driving element is used for controlling the second cleaning component to convey cleaning liquid to the cleaning swab, and the cleaning swab is used for cleaning the outer wall of the sampling needle;

the sampling needle cleaning device further comprises: the negative pressure source component is connected with the second cleaning component through the sixth switching element, a fourth pipeline of the first cleaning component is connected with a fifth pipeline of the second cleaning component, when the sixth switching element is connected with the second cleaning component, negative pressure in the negative pressure source component can be led into the first cleaning component from the fourth pipeline after passing through the fifth pipeline of the second cleaning component, and the pressure sensor is arranged on the first cleaning component or the second cleaning component and used for detecting internal pressure;

the sampling needle cleaning device further comprises: the device comprises a ninth pipeline and a fifth switching element, wherein one end of the ninth pipeline is connected with a liquid outlet of the cleaning swab, the other end of the ninth pipeline is connected with a negative pressure source assembly through the fifth switching element, and the negative pressure source assembly is further used for temporarily storing waste liquid and waste gas discharged from the liquid outlet of the cleaning swab.

2. The sampling needle cleaning device of claim 1, wherein the first cleaning assembly further comprises a first switching element, a second conduit, an auxiliary cleaning drive element, a third conduit, and a second switching element, the first conduit, the first switching element, the second conduit, the auxiliary cleaning drive element, the third conduit, the second switching element, and the fourth conduit being connected in sequence.

3. The sampling needle cleaning device of claim 2, wherein the second cleaning assembly further comprises a seventh conduit and a fourth switching element, the fifth conduit, seventh conduit, fourth switching element and eighth conduit being connected in sequence, the fifth conduit being connected to the main cleaning drive element, the eighth conduit being connected to the liquid inlet of the cleaning swab.

4. The sampling needle cleaning device of claim 3, further comprising: a third switching element, a sixth pipeline and a cleaning liquid reagent bucket;

the fourth pipeline or the fifth pipeline is connected to the normal-through end of the third switching element, two ends of the sixth pipeline are respectively connected to the first switching end of the third switching element and the cleaning liquid reagent barrel, and the seventh pipeline is connected to the second switching end of the third switching element.

5. The sampling needle cleaning device of claim 4, wherein the seventh conduit is connected to a negative pressure source assembly through the sixth switching element; the sixth switching element is used for controlling the on-off of the negative pressure source assembly and the seventh pipeline, and when the sixth switching element is conducted, negative pressure in the negative pressure source assembly is led into the second cleaning assembly and the first cleaning assembly; when the sixth switching element is closed, the inner wall and the outer wall of the sampling needle are respectively cleaned for multiple times by the driving of the main cleaning driving element.

6. The sampling needle cleaning device of claim 5, further comprising: a waste liquid barrel; the waste liquid barrel is connected with the negative pressure source component and is used for collecting waste liquid and waste gas temporarily stored in the negative pressure source component.

7. The sampling needle cleaning device of claim 6, further comprising: the waste liquid pump is connected with the waste liquid barrel through the waste liquid pump, and the waste liquid pump is used for sucking waste liquid and waste gas in the negative pressure source assembly into the waste liquid barrel.

8. The sampling needle cleaning device of claim 5, further comprising: an air pressure sensor; the air pressure sensor is arranged on the negative pressure source component and used for detecting air pressure in the negative pressure source component.

9. The sampling needle cleaning device of claim 4, wherein the pressure sensor is disposed on the fourth or fifth line and is configured to detect pressure within the line.

10. A cleaning method of a sampling needle cleaning device applied to the sampling needle cleaning device according to any one of claims 4 to 9, comprising:

controlling the normal-through end of the third switching element to be communicated with the first switching end, and sucking cleaning liquid from the cleaning liquid reagent bucket through the main cleaning driving element;

the normal-through end of the third switching element is controlled to be communicated with the second switching end, the main cleaning driving element is controlled to convey cleaning liquid to the cleaning swab so as to clean the outer wall of the sampling needle, and the cleaned cleaning liquid is discharged into the negative pressure source assembly;

and opening the fifth switching element, discharging the cleaned cleaning liquid into the ninth pipeline from the liquid outlet of the cleaning swab, and discharging the cleaning liquid into the negative pressure source assembly through the ninth pipeline.

11. The method of cleaning a sampling needle cleaning device of claim 10, further comprising:

controlling the normal-through end of the third switching element to be communicated with the first switching end, and sucking cleaning liquid from the cleaning liquid reagent bucket through the main cleaning driving element;

and controlling the normal-through end of the third switching element to be communicated with the second switching end, controlling the main cleaning driving element to convey cleaning liquid to the inner wall of the sampling needle for cleaning, and discharging the cleaned cleaning liquid into the negative pressure source assembly.

12. The method of claim 11, wherein controlling the normal end of the third switching element to communicate with the second switching end, controlling the main cleaning driving element to deliver cleaning fluid to the inner wall of the sampling needle for cleaning, and discharging the cleaned cleaning fluid into the negative pressure source assembly, comprises:

the normal-through end of the third switching element is controlled to be communicated with the second switching end, the first switching element and the second switching element are opened, the main cleaning driving element is controlled to push out cleaning liquid and keep thrust, and the cleaning liquid flows into the sampling needle through the first cleaning assembly to clean the inner wall of the sampling needle;

when the pressure in the first cleaning component is detected to reach a preset pressure threshold, controlling the sixth switching element to execute multiple switching operations, and in each switching operation, opening the sixth switching element to communicate the negative pressure source component and the first cleaning component, introducing the negative pressure in the negative pressure source component into a pipeline of the first cleaning component, reducing the pressure, and closing the sixth switching element after the pressure reduction is completed;

and opening the fifth switching element, discharging the cleaned cleaning liquid from the inner wall of the sampling needle into the cleaning swab, and discharging the cleaning liquid into the negative pressure source assembly through the ninth pipeline.

13. The cleaning method of the sampling needle cleaning device according to claim 10, wherein: the sampling needle cleaning device further comprises an air pressure sensor, a waste liquid pump and a waste liquid barrel, wherein the air pressure sensor is arranged on the negative pressure source component, and the negative pressure source component is connected with the waste liquid barrel through the waste liquid pump;

when the air pressure sensor detects that the air pressure in the negative pressure source assembly is lower than a preset air pressure threshold value, the waste liquid pump is started to discharge liquid or gas in the negative pressure source assembly into the waste liquid barrel.

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