Smear preparation device and smear preparation method

Abstract

The present invention discloses a smear preparation device and a smear preparation method. The smear preparation device includes a sampling mechanism, a glass slide loading mechanism, a sample adding mechanism, a slide pushing mechanism, and a blade cleaning device. The blade cleaning device includes: a liquid adding unit for outputting cleaning liquid for cleaning the blade; the liquid adding unit includes a liquid main pipe, a cleaning liquid inlet, a connecting pipe, and liquid adding ports provided at both ends of the connecting pipe. The connecting pipe has an anti-backflow control component for cutting off the flow path of the cleaning liquid from the liquid adding port to the connecting point, which is the connection point between the connecting pipe and the liquid main pipe; a blade cleaning tank unit, the blade cleaning tank unit includes a blade cleaning tank for holding the cleaning liquid output by the liquid adding unit and a waste liquid output pipe connected to the blade cleaning tank and for discharging the cleaning waste liquid in the blade cleaning tank; and a drying unit for drying the blade after being cleaned with the cleaning liquid. The above-mentioned smear preparation device prevents liquid from flowing out of the liquid adding port during the drying process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a smear preparation device and a smear preparation method. Background Art

[0002] The slide pusher of the smear preparation device has a blade for spreading the blood sample onto the slide and pushing the slide. It is necessary to ensure that the blade is clean when using it.

[0003] Currently, blade cleaning devices require the blades to be rinsed with cleaning fluid and then air-dried. To facilitate cleaning, the blade cleaning unit uses a dual-sided liquid addition solution, which allows liquid to be applied to both sides of the blade, making it easier to clean. After the blades are cleaned, air is used to dry them.

[0004] However, the bilateral liquid addition solution has two liquid addition ports. Currently, the two liquid addition ports are connected by a connecting pipe, that is, the liquid is transported from the liquid main pipe to the connecting pipe, and the connecting pipe is divided into two liquid addition ports. The liquid main pipe is used to control the liquid addition so that the two liquid addition ports add liquid at the same time. After the blade is cleaned by adding liquid, the blade cleaning pool of the blade cleaning device is emptied, and then the blade is blown dry by airflow. During the blade drying process, it is inevitable that there will be a pressure difference between the two liquid addition ports. Since the two liquid addition ports are connected on the connecting pipe, the liquid will flow from the high-pressure liquid addition port end to the low-pressure liquid addition port end, and eventually the residual liquid in the connecting pipe will flow out from the low-pressure liquid addition port. In the process of flowing to the blade cleaning pool, the liquid will be blown onto the blade by the drying airflow, resulting in the blade being unable to be blown dry, and even causing abnormalities in the subsequent blood sample push.

[0005] Therefore, how to prevent the liquid from flowing out of the liquid adding port during the drying process is a problem that needs to be solved urgently by people in this technical field. Summary of the Invention

[0006] In view of this, the present invention provides a smear preparation device to prevent liquid from flowing out of the liquid filling port during the drying process.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A smear preparation device comprising:

[0009] Sampling mechanism, used for taking samples;

[0010] A slide loading mechanism, used for loading slides;

[0011] a sample loading mechanism, for loading a sample onto the glass slide;

[0012] a slide pushing mechanism, used for smoothing the sample on the slide to form a smear;

[0013] It also includes a blade cleaning device for cleaning the blade used to smooth the sample in the sheet pushing mechanism, and the blade cleaning device includes:

[0014] a liquid adding unit for outputting cleaning liquid for cleaning the blades; the liquid adding unit comprises a liquid main pipe, a cleaning liquid inlet provided at one end of the liquid main pipe, a connecting pipe communicating with the other end of the liquid main pipe, and liquid adding ports provided at both ends of the connecting pipe, the connecting pipe having a backflow prevention control member for cutting off the flow of cleaning liquid from the liquid adding port to the connecting point, the connecting point being the location where the connecting pipe connects to the liquid main pipe;

[0015] a blade cleaning tank unit, the blade cleaning tank unit comprising a blade cleaning tank for receiving the cleaning liquid output by the liquid adding unit and a waste liquid output pipeline connected to the blade cleaning tank and for discharging the cleaning waste liquid in the blade cleaning tank;

[0016] The drying unit is used to dry the blade after being cleaned with the cleaning liquid.

[0017] The present invention also provides a smear preparation method, comprising:

[0018] Take samples;

[0019] Mounting slides;

[0020] loading a sample onto the slide;

[0021] Smoothing the sample on the slide with a blade to prepare a smear;

[0022] The invention also includes cleaning the blade, specifically:

[0023] A liquid adding unit is used to output cleaning liquid for cleaning the blades. The liquid adding unit includes a liquid main pipe, a cleaning liquid inlet provided at one end of the liquid main pipe, a connecting pipe connected to the other end of the liquid main pipe, and liquid adding ports provided at both ends of the connecting pipe. The connecting pipe has an anti-backflow control member for cutting off the flow of cleaning liquid from the liquid adding port to the connecting point, and the connecting point is the connection point between the connecting pipe and the liquid main pipe.

[0024] After the liquid adding unit stops outputting the cleaning liquid, the anti-backflow control component cuts off the flow path of the cleaning liquid from the liquid adding port to the connecting point;

[0025] The blade cleaned with the cleaning liquid is blown dry.

[0026] It can be seen from the above technical solution that the smear preparation device provided by the present invention has a sampling mechanism for extracting samples, a slide loading mechanism for loading slides, a sample adding mechanism for loading samples onto the slides, and a blade of a slide pushing mechanism for smoothing the samples on the slides to make smears. Since the blades of the slide pushing mechanism are in direct contact with the samples, a blade cleaning device is required to clean the blades of the slide pushing mechanism. Among them, the blade cleaning pool of the blade cleaning pool unit is used to place the blades, the liquid adding unit is used to output the cleaning liquid for cleaning the blades, the blade cleaning pool is used to hold the cleaning liquid output by the liquid adding unit, and the cleaning waste liquid after cleaning the blades is discharged from the waste liquid output pipeline. The cleaning liquid will flow out of both liquid adding ports of the liquid adding unit; after the liquid adding unit stops outputting the cleaning liquid, the anti-backflow control component is maintained to prevent the backflow of the liquid in the connecting pipe, and the drying unit is turned on, and the drying unit is used to dry the blades after being cleaned by the cleaning liquid. Since the anti-backflow control component cuts off the flow path of the cleaning liquid from the liquid adding port to the connecting point, it plays a role in preventing the backflow of the liquid in the connecting pipe. Therefore, the liquid in the connecting pipe can only flow from the connecting point between the liquid main pipe and the connecting pipe to the two liquid adding ports, effectively limiting the operation of the liquid flowing from one liquid adding port to the other, thereby preventing the residual liquid in the connecting pipe from flowing out of the liquid adding port during the process of drying the blade, preventing the liquid from being blown onto the blade during the drying process, ensuring the drying operation of the blade, and allowing the subsequent blood sample pushing operation to proceed normally.

[0027] The smear preparation method provided by the present invention has the same technical effects as the above-mentioned smear preparation device, and will not be described here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of a first structure of a blade cleaning device provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a second structure of a blade cleaning device provided by an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the third structure of the blade cleaning device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The invention discloses a smear preparation device to prevent liquid from flowing out of a liquid adding port during a blow-drying process. The invention also provides a smear preparation method.

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Please refer to Figure 1-Figure 3 An embodiment of the present invention provides a smear preparation device, including a sampling mechanism for extracting samples, a slide loading mechanism for loading slides, a sample adding mechanism for loading samples onto the slides, a slide pushing mechanism for smoothing the samples on the slides to make smears, and a blade cleaning device for cleaning the blade in the slide pushing mechanism for smoothing the samples.

[0035] The blade cleaning device includes a blade cleaning tank unit, a liquid adding unit, and a drying unit. The liquid adding unit is used to dispense cleaning liquid for cleaning the blades, while the drying unit is used to dry the blades after being cleaned with the cleaning liquid. The blade cleaning tank unit includes a blade cleaning tank 3 for receiving the cleaning liquid dispensed by the liquid adding unit, and a waste liquid discharge pipeline connected to the blade cleaning tank 3 for discharging waste cleaning liquid from the blade cleaning tank.

[0036] Among them, the liquid adding unit includes a liquid main pipe 10, a cleaning liquid inlet 12 arranged at one end of the liquid main pipe 10, a connecting pipe 8 connected to the other end of the liquid main pipe 10, and a liquid adding port 4 arranged at both ends of the connecting pipe 8. The connecting pipe 8 has an anti-backflow control component for cutting off the flow path of the cleaning liquid from the liquid adding port 4 to the connecting point. The connecting point is the connecting position between the connecting pipe 8 and the liquid main pipe 10.

[0037] The smear preparation device provided by the embodiment of the present invention comprises a sampling mechanism for extracting a sample, a slide loading mechanism for loading a slide, a sample adding mechanism for loading the sample onto the slide, and a blade of a slide pushing mechanism for smoothing the sample on the slide to form a smear. Since the blade of the slide pushing mechanism is in direct contact with the sample, a blade cleaning device is required to clean the blade of the slide pushing mechanism. The blade cleaning pool of the blade cleaning pool unit is used to place the blade, the liquid adding unit is used to output the cleaning liquid for cleaning the blade, the blade cleaning pool is used to hold the cleaning liquid output by the liquid adding unit, and the cleaning waste liquid after cleaning the blade is discharged from the waste liquid output pipeline. The cleaning liquid will flow out of both liquid adding ports 4 of the liquid adding unit; after the liquid adding unit stops outputting the cleaning liquid, the anti-backflow control component is maintained to prevent the backflow of the liquid in the connecting pipe 8, and the drying unit is turned on, and the drying unit is used to dry the blade after being cleaned by the cleaning liquid. Since the anti-backflow control component cuts off the flow path of the cleaning liquid from the liquid adding port 4 to the connecting point, it plays a role in preventing the liquid in the connecting pipe 8 from flowing back. Therefore, the liquid in the connecting pipe 8 can only flow from the connecting point between the liquid main pipe 10 and the connecting pipe 8 to the two liquid adding ports 4, effectively limiting the operation of the liquid flowing from one liquid adding port 4 to the other liquid adding port 4, thereby avoiding the residual liquid in the connecting pipe 8 from flowing out of the liquid adding port 4 during the process of drying the blade, preventing the liquid from being blown onto the blade during the drying process, ensuring the drying operation of the blade, and allowing the subsequent blood sample pushing operation to proceed normally.

[0038] In Example A, the liquid adding unit is used to deliver cleaning liquid to the blade cleaning pool, which is used to hold and clean blades. Specifically, a blade to be cleaned is placed in the blade cleaning pool, and the liquid adding unit delivers cleaning liquid to the pool, allowing the cleaning liquid to contact the blade in the pool, where it is cleaned by immersion or ultrasonic vibration.

[0039] In Example A, the connection is located in the middle of connecting pipe 8 to ensure that both liquid inlets 4 uniformly deliver cleaning liquid to the blade cleaning pool. Therefore, cleaning liquid enters the liquid main pipe 10 from the cleaning liquid inlet, flows into connecting pipe 8 from the other end of liquid main pipe 10, and flows simultaneously to both ends of connecting pipe 8. Because the connection is located in the middle of connecting pipe 8, the liquid flow path length from the connection to both liquid inlets 4 is the same, ensuring that cleaning liquid flows out of both liquid inlets 4 simultaneously. Of course, the connection can also be located at other locations in connecting pipe 8.

[0040] In Example B, the liquid adding unit is used to deliver cleaning liquid to the blades, and the blade cleaning tank is used to hold the cleaning liquid after cleaning the blades. That is, the cleaning liquid delivered by the liquid adding unit directly flushes the blades, completing the cleaning process. The cleaning liquid (waste cleaning liquid) after cleaning the blades flows into the blade cleaning tank and is then discharged through the waste liquid output pipeline.

[0041] In Example B, the cleaning liquid flowing out of the two liquid filling ports 4 flushes both sides of the blade respectively. In order to ensure the uniformity of flushing on both sides of the blade during the flushing process, the connecting point is located in the middle of the connecting pipe 8. Therefore, the cleaning liquid enters the liquid main pipe 10 from the cleaning liquid inlet, flows into the connecting pipe 8 from the other end of the liquid main pipe 10, and flows simultaneously to both ends of the connecting pipe 8. Because the connecting point is located in the middle of the connecting pipe 8, the flow path length of the liquid flowing from the connecting point to the two liquid filling ports 4 is the same, ensuring that the cleaning liquid flows out of the two liquid filling ports 4 at the same time. Of course, the connecting point can also be located at other positions in the connecting pipe 8.

[0042] Since the blade cleaning pool is used to hold the cleaning liquid after cleaning the blade, the blade can be placed in the blade cleaning pool or above the opening of the blade cleaning pool. It is only necessary to allow the cleaning liquid (cleaning waste liquid) after cleaning the blade to flow into the blade cleaning pool.

[0043] Among them, the cleaning liquid can be a diluted liquid with a concentration value that meets the requirements for cleaning the blade, that is, a liquid that can be directly used in the blade cleaning operation after being diluted. The dilution operation of the cleaning liquid can be completed before it is transported to the liquid adding unit. In embodiment A, the cleaning liquid output to the blade cleaning pool by the liquid adding unit is a diluted liquid, and the cleaning liquid is directly output to the blade cleaning pool to complete the cleaning of the blade. In embodiment B, since the liquid adding unit directly outputs the cleaning liquid to the blade, the cleaning liquid directly enters the liquid adding unit from the cleaning liquid inlet, passes through the liquid main pipe and the connecting pipe, and is output to the blade from the liquid adding port to clean the blade.

[0044] The cleaning liquid output by the liquid adding unit can also be a solution that needs to be diluted. In embodiment A, the liquid adding unit is used to output cleaning liquid (solution) to the blade cleaning pool, and to deliver a solvent (such as water) to the blade cleaning pool, so that the cleaning liquid and the solvent are mixed and diluted, so that the diluted liquid meets the requirements for cleaning the blade, and the blade can be cleaned in the blade cleaning pool. In embodiment B, since the liquid adding unit directly outputs cleaning liquid to the blade, a dilution unit can be set in the liquid adding unit, that is, the liquid (solution) to be diluted and the solvent (such as water) are respectively delivered to the dilution unit for mixing and dilution, and after the diluted liquid meets the requirements for cleaning the blade, it is output through the liquid adding port 4. Among them, the dilution unit can be set on the liquid main pipe, and can also be set in front of the liquid main pipe.

[0045] In the smear preparation device provided in the embodiment of the present invention, the drying unit has an air blowing port 5 for blowing out air.

[0046] In this embodiment, the anti-backflow control component includes a one-way valve that connects the flow path from the connection point to the liquid filling port 4 and / or a control valve for controlling the connection of the connecting pipe 8. The anti-backflow control component can include only a one-way valve, only a control valve, or a control valve and a one-way valve. The control valve can be a solenoid valve or a pressure-breaking valve. Figure 1 As shown, in the first embodiment, the backflow prevention control element includes at least two one-way valves 18. One one-way valve 18 is located on the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and one liquid filling port 4, and the other one-way valve 18 is located on the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and another liquid filling port 4. The one-way valves 18 are connected from the connection point between the liquid main pipe 10 and the connecting pipe 8 to the liquid filling port 4. The one-way valves 18 prevent backflow of liquid in the connecting pipe 8, thereby preventing residual liquid in the connecting pipe 8 from flowing out of the liquid filling port 4.

[0047] In the first embodiment, a main valve 11 is provided on the liquid main pipe 10 to control the on / off flow of the liquid main pipe 10. After the liquid adding unit stops discharging cleaning liquid, the main valve 11 is controlled to close, preventing further liquid from entering the connecting pipe 8. In combination with two one-way valves 18, this ensures that residual liquid in the connecting pipe 8 does not flow out of the liquid adding port 4 during the blowing process. Alternatively, an on / off valve may be provided directly on an external liquid output device (connected to the cleaning liquid inlet 12 of the liquid main pipe 10) to directly control whether liquid is added to the liquid main pipe 10.

[0048] In the first embodiment, the main valve 11 is a solenoid valve for easy control. Furthermore, one end of the waste liquid output pipeline is connected to the bottom of the blade cleaning tank 3, and the other end of the waste liquid output pipeline is provided with a waste liquid outlet 1. Furthermore, a waste liquid control valve 2 is provided on the waste liquid output pipeline. The waste liquid control valve 2 can be a solenoid valve.

[0049] The one-way valve may not be provided, and the anti-backflow control member may include a control valve for controlling the on-off of the connecting pipe 8. The control valve may be a solenoid valve or a pressure-breaking valve.

[0050] like Figure 2 As shown, in the second embodiment, there is only one control valve 19, which is disposed on the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and one of the liquid filling ports 4. When the control valve 19 is in the disconnected state, the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and one of the liquid filling ports 4 is disconnected, thereby disconnecting the connecting pipe 8. This ensures that the two liquid filling ports 4 do not affect each other. Even if there is a pressure difference between the two liquid filling ports 4, any residual liquid in the connecting pipe 8 cannot flow out of the liquid filling port 4.

[0051] In the second embodiment, a main valve 11 is provided on the liquid main pipe 10 to control the on / off flow of the liquid main pipe 10. After the liquid adding unit stops outputting cleaning liquid, the main valve 11 is controlled to close, preventing further liquid from entering the connecting pipe 8. In conjunction with the control valve 19, this ensures that residual liquid in the connecting pipe 8 does not flow out of the liquid adding port 4 during the blowing process. Alternatively, an on / off valve may be provided directly on an external liquid output device (which is connected to the cleaning liquid inlet 12 of the liquid main pipe 10) to directly control whether liquid is added to the liquid main pipe 10.

[0052] In the second embodiment, both the main valve 11 and the control valve 19 are solenoid valves for easier control. Alternatively, the control valve 19 can be configured as a pressure-break valve. Furthermore, one end of the waste liquid output pipeline is connected to the bottom of the blade cleaning tank 3, and the other end of the waste liquid output pipeline is provided with a waste liquid outlet 1. Furthermore, a waste liquid control valve 2 is provided on the waste liquid output pipeline. The waste liquid control valve 2 can be a solenoid valve.

[0053] like Figure 3 As shown, in the third embodiment, there are two control valves 19; one control valve 19 is disposed on the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and one liquid filling port 4, and the other control valve 19 is disposed on the pipe section between the connection point between the liquid main pipe 10 and the connecting pipe 8 and the other liquid filling port 4. When the control valves 19 are in the disconnected state, both pipe sections between the connection point between the liquid main pipe 10 and the connecting pipe 8 and the two liquid filling ports 4 are disconnected, thereby disconnecting the connecting pipe 8. This ensures that the two liquid filling ports 4 do not affect each other. Even if a pressure difference exists between the two liquid filling ports 4, any residual liquid in the connecting pipe 8 cannot flow out of the liquid filling ports 4.

[0054] Furthermore, in the third embodiment, the main valve 11 may not be provided on the liquid main pipe 10. After the liquid adding unit stops discharging cleaning liquid, the two control valves 19 close, ensuring that any residual liquid in the connecting pipe 8 does not flow out of the liquid adding port 4 during the blowing process. Alternatively, an on-off valve may be provided directly on the external liquid output device (which is connected to the cleaning liquid inlet 12 of the liquid main pipe 10); alternatively, a main valve 11 may be provided on the liquid main pipe 10 to control the on / off operation of the liquid main pipe 10.

[0055] The anti-backflow control component can also include a control valve 19 and a one-way valve. The control valve 19 is set on the pipe section between the connection point and one liquid filling port 4, and the one-way valve is set on the pipe section between the connection point and another liquid filling port 4.

[0056] For ease of connection, the other end of the liquid main pipe 10 communicates with the connecting pipe 8 via a first three-way connector 9. Specifically, the first three-way connector 9 divides the connecting pipe 8 into two segments. One end of each segment and the other end of the liquid main pipe 10 are both connected to the first three-way connector 9. The other ends of both segments are each provided with a liquid filling port 4. Alternatively, the other end of the liquid main pipe 10 can be directly connected to the middle portion of the connecting pipe 8 by providing a connecting hole in the middle portion of the connecting pipe 8. The other end of the liquid main pipe 10 extends through the connecting hole into the connecting pipe 8, and the outer wall of the other end of the liquid main pipe 10 is sealed against the wall of the connecting hole.

[0057] In this embodiment, the drying unit includes an air intake manifold 14, an air inlet 13 disposed at one end of the manifold 14, and an air duct 6 connected to the other end of the manifold 14. Two air inlets 5 are provided, one at each end of the air duct 6. This arrangement allows the two air inlets 5 to dry the two surfaces of the blade, thereby improving drying efficiency. Furthermore, since the two air inlets 5 are disposed at each end of the air duct 6, the airflow from the two air inlets 5 is as consistent as possible, thereby reducing the pressure difference between the two liquid filling ports 4.

[0058] It can be understood that the gas source is connected to the gas inlet 13 , and the gas is transported from the gas source to the gas inlet 13 and enters the gas intake manifold 14 .

[0059] For ease of control, an intake valve 15 is provided on the intake manifold 14 to control the on / off operation of the intake manifold 14. Preferably, the intake valve 15 is a solenoid valve. Alternatively, an on / off valve on an externally connected air source may be used to control the intake operation, which will not be described in detail here and is within the scope of this disclosure.

[0060] In this embodiment, the other end of the intake manifold 14 is connected to the blowing pipe 6 via a second three-way connector 7. Specifically, the second three-way connector 7 divides the blowing pipe 6 into two sections. One end of each section and the other end of the intake manifold 14 are connected to the second three-way connector 7, and the other ends of both sections are provided with a blowing port 5. Alternatively, the other end of the intake manifold 14 can be directly connected to the middle portion of the blowing pipe 6. This can be accomplished by providing a connecting hole in the middle portion of the blowing pipe 6, allowing the other end of the intake manifold 14 to extend into the blowing pipe 6 through the connecting hole, with the outer wall of the other end of the intake manifold 14 being sealed against the wall of the connecting hole.

[0061] An embodiment of the present invention further provides a smear preparation method, comprising:

[0062] Take samples;

[0063] Mounting slides;

[0064] Load the sample onto a slide;

[0065] The sample on the slide is smoothed by the blade of the slide pushing mechanism to make a smear;

[0066] Also includes cleaning blades, specifically:

[0067] A liquid adding unit is used to output cleaning liquid for cleaning the blades. The liquid adding unit includes a liquid main pipe 10, a cleaning liquid inlet provided at one end of the liquid main pipe 10, a connecting pipe 8 connected to the other end of the liquid main pipe 10, and liquid adding ports 4 provided at both ends of the connecting pipe 8. The connecting pipe 8 has an anti-backflow control member for cutting off the flow of cleaning liquid from the liquid adding port 4 to the connecting point. The connecting point is the connection point between the connecting pipe 8 and the liquid main pipe 10.

[0068] After the liquid adding unit stops outputting the cleaning liquid, the anti-backflow control component cuts off the flow path of the cleaning liquid from the liquid adding port 4 to the connecting point;

[0069] Blow dry the blade after cleaning with cleaning fluid.

[0070] The smear preparation method provided in the embodiment of the present invention has the same technical effects as the above-mentioned smear preparation device, and will not be described one by one here.

[0071] Furthermore, the anti-backflow control component includes a control valve 19 for controlling the on-off of the connecting pipe 8 .

[0072] like Figure 2 As shown, in the first embodiment, the number of the control valve 19 is one and it is arranged on the pipe section between the connecting point and one liquid filling port 4. The connecting point is the connecting position between the connecting pipe 8 and the liquid main pipe 10.

[0073] During blade cleaning, after the liquid adding unit stops discharging cleaning liquid, the liquid inflow to the liquid main pipe 10 is stopped, and the control valve 19 is opened. This arrangement allows the anti-backflow control element to cut off the flow of cleaning liquid from the liquid adding port 4 to the connecting point. In this embodiment, the liquid main pipe 10 is provided with a main valve 11. Opening this main valve 11 stops the liquid inflow to the liquid main pipe 10.

[0074] like Figure 3 As shown, in the second embodiment, there are two control valves 19; one control valve 19 is provided on the pipe section between the connection point and one liquid filling port 4, and the other control valve 19 is provided on the pipe section between the connection point and another liquid filling port 4. The connection point is the connection point between the connecting pipe 8 and the liquid main pipe 10.

[0075] During the blade cleaning process, after the liquid adding unit stops delivering cleaning liquid, the two control valves 19 disconnect the connecting pipe 8, thereby stopping the flow of liquid into the liquid main pipe 10. This arrangement allows the anti-backflow control element to cut off the flow of cleaning liquid from the liquid adding port 4 to the connecting point. In this embodiment, the two control valves 19 disconnect the connecting pipe 8 to stop the flow of liquid into the liquid main pipe 10. Therefore, the main valve 11 may or may not be provided on the liquid main pipe 10.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smear preparation device comprising: Sampling mechanism, used for taking samples; A slide loading mechanism, used for loading slides; a sample loading mechanism, for loading a sample onto the glass slide; a slide pushing mechanism, used for smoothing the sample on the slide to form a smear; It is characterized in that it also includes a blade cleaning device for cleaning the blade of the sheet pushing mechanism for smoothing the sample, and the blade cleaning device includes: a liquid adding unit for outputting cleaning liquid for cleaning the blades; the liquid adding unit comprises a liquid main pipe, a cleaning liquid inlet provided at one end of the liquid main pipe, a connecting pipe communicating with the other end of the liquid main pipe, and liquid adding ports provided at both ends of the connecting pipe, the connecting pipe having a backflow prevention control member for cutting off the flow of cleaning liquid from the liquid adding port to the connecting point, the connecting point being the location where the connecting pipe connects to the liquid main pipe; a blade cleaning tank unit, the blade cleaning tank unit comprising a blade cleaning tank for receiving the cleaning liquid output by the liquid adding unit and a waste liquid output pipeline connected to the blade cleaning tank and for discharging the cleaning waste liquid in the blade cleaning tank; The drying unit is used to dry the blade after being cleaned with the cleaning liquid.

2. The smear preparation device according to claim 1, characterized in that The liquid adding unit is used to output the cleaning liquid to the blade cleaning pool, and the blade cleaning pool is used to accommodate the blade and clean it; Alternatively, the liquid adding unit is used to output the cleaning liquid to the blade, and the blade cleaning tank is used to hold the cleaning liquid after cleaning the blade.

3. The smear preparation device according to claim 1, characterized in that The anti-backflow control component includes a one-way valve for conducting the flow path from the connection point to the liquid filling port and / or a control valve for controlling the on-off of the connecting pipeline.

4. The smear preparation device according to claim 3, characterized in that The anti-backflow control component includes at least two one-way valves, one of which is provided on a pipe section between the connection point and one of the liquid filling ports, and the other one-way valve is provided on a pipe section between the connection point and another of the liquid filling ports; The one-way valve is connected in a direction from the communication point to the liquid filling port.

5. The smear preparation device according to claim 3, characterized in that The anti-backflow control component includes a control valve for controlling the on-off of the connecting pipeline.

6. The smear preparation device according to claim 5, characterized in that The number of the control valve is one and the control valve is arranged on the pipe section between the connecting point and one of the liquid filling ports.

7. The smear preparation device according to claim 5, characterized in that There are two control valves; one control valve is arranged on the pipe section between the connecting point and one of the liquid adding ports, and the other control valve is arranged on the pipe section between the connecting point and the other of the liquid adding ports.

8. The smear preparation device according to any one of claims 1 to 7, characterized in that The liquid main pipe is provided with a main valve for controlling the on and off of the liquid main pipe.

9. The smear preparation device according to claim 1, characterized in that The other end of the liquid main pipe is connected to the connecting pipe through a first three-way connector.

10. The smear preparation device according to claim 1, wherein The drying unit has an air blowing port for blowing out air; The drying unit includes an air intake manifold, an air intake port arranged at one end of the air intake manifold, and an air blowing pipe connected to the other end of the air intake manifold. There are two air intake ports, which are respectively arranged at both ends of the air blowing pipe.

11. The smear preparation device according to claim 10, wherein The air intake manifold is provided with an air intake valve for controlling the on and off of the air intake manifold.

12. The smear preparation device according to claim 10 or 11, characterized in that The other end of the air intake manifold is connected to the air blowing pipe through a second three-way connector.

13. A method for preparing a smear, comprising: Take samples; Mounting slides; loading a sample onto the slide; Smoothing the sample on the slide with a blade to prepare a smear; It is characterized in that it also includes cleaning the blade, specifically: A liquid adding unit is used to output cleaning liquid for cleaning the blades. The liquid adding unit includes a liquid main pipe, a cleaning liquid inlet provided at one end of the liquid main pipe, a connecting pipe connected to the other end of the liquid main pipe, and liquid adding ports provided at both ends of the connecting pipe. The connecting pipe has an anti-backflow control member for cutting off the flow of cleaning liquid from the liquid adding port to the connecting point, and the connecting point is the connection point between the connecting pipe and the liquid main pipe. After the liquid adding unit stops outputting the cleaning liquid, the anti-backflow control component cuts off the flow path of the cleaning liquid from the liquid adding port to the connecting point; The blade cleaned with the cleaning liquid is blown dry.

14. The method for preparing a smear according to claim 13, wherein: The anti-backflow control component includes a control valve for controlling the connection and disconnection of the connecting pipe. The control valve is provided on the pipe section between the connecting point and one of the liquid filling ports. After the liquid filling unit stops outputting the cleaning liquid, the liquid inflow to the liquid main pipe stops, and the control valve is disconnected. Alternatively, the anti-backflow control component includes a control valve for controlling the on-off of the connecting pipe, and there are two control valves, one of which is arranged on the pipe section between the connecting point and one of the liquid adding ports, and the other control valve is arranged on the pipe section between the connecting point and the other of the liquid adding ports; after the liquid adding unit stops outputting the cleaning liquid, the two control valves are disconnected to stop the liquid from entering the liquid main pipe.

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