Test System and Test Method of Automatic Coagulation Analyzer

Abstract

The invention discloses a test system and a test method for a fully automatic coagulation tester, relating to the field of coagulation testers. The test system of the fully automatic coagulation tester in the invention comprises a test bench and a box body. The box body is fixedly installed at the top of the test bench. An anti-blocking component is installed on one side side wall of the sampling needle, and an anti-leakage component is installed on the other side of the sampling needle. An adsorption component is installed inside the box body. By setting the adsorption component, the output end of the motor drives the reciprocating lead screw to rotate. By utilizing the rotation of the reciprocating lead screw, the threaded sleeve and the friction block are driven to slide reciprocally in the horizontal direction. Through the continuous friction between the friction block and the adsorption plate, an electrostatic effect is generated, so as to centrally adsorb the impurities scattered inside the box body. After the test is completed, only the impurities at the adsorption plate need to be cleaned, reducing the need for the staff to clean the impurities scattered inside the box body after the test is completed, and improving the practicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of coagulation testers, and specifically to a test system and a test method for a fully automatic coagulation tester. Background Art

[0002] A fully automatic coagulation tester is a medical electronic instrument used to measure the coagulation state of human blood and the risk of thrombosis formation, and is widely used in the fields of clinical diagnosis, treatment, and scientific research. With the progress of science and technology, the detection methods of thrombosis and hemostasis are also constantly developing and improving, providing a more convenient, accurate, and reliable basis for clinical diagnosis and treatment.

[0003] For example, a rotary plus-style fully automatic coagulation tester proposed in the publication number CN102520200B includes a test system, a rotary sampling system, an inclined reagent refrigeration system, a cleaning system, and a chassis. The test system integrates four test channels and can work simultaneously; the rotary sampling system includes a rotary sampling arm module, a sampling needle module with constant temperature heating and liquid level detection functions, and a lead screw linear guide sampling control system; the inclined reagent refrigeration system adopts an inclined installation method of reagent bottles, saving reagents and avoiding waste; the cleaning system includes an overflow cleaning module and a dual-channel peristaltic liquid inlet and outlet system. This tester has the advantages of accurate testing, precise sampling, reagent saving, long reagent storage time, constant temperature heating of the test system, high detection efficiency, simple operation, good cleaning effect, safe and efficient liquid discharge, and low noise.

[0004] At present, after the sampling needle is cleaned after use, there will still be some residual impurities. If not cleaned in time, it will be blocked over time, affecting the normal liquid suction or liquid discharge operation of the sampling needle; in addition, if the sampling needle is blocked, it will affect the normal liquid suction or liquid discharge process, resulting in a dripping phenomenon. In addition, the sealing problem at the connection of the sampling needle will also cause a dripping problem, resulting in an error in the liquid suction volume of the sample and affecting the test result; moreover, after the residual impurities inside the sampling needle are cleaned out, they will scatter on the bottom wall of the box body. After the test is completed, the staff still needs to clean it, which is rather cumbersome.

[0005] In view of the above problems, a test system and a test method for a fully automatic coagulation tester are proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a test system and a test method for a fully automatic coagulation tester. By using this device for work, the problems in the above background are solved, that is, after the sampling needle is cleaned after use, there will still be some residual impurities, affecting the normal liquid suction or liquid discharge operation. In addition, the dripping problem will cause an error in the liquid suction volume of the sample and affect the test result. Moreover, after the residual impurities inside the sampling needle are cleaned out, they will scatter on the bottom wall of the box body, which is not convenient for recycling and cleaning.

[0007] To achieve the above object, the present invention provides the following technical solution: a test system of a fully automatic coagulation tester, including a test bench and a box body. The box body is fixedly installed at the top of the test bench. Inside the box body, a sample position, a test position and a reagent position are fixedly installed. The sample position, the test position and the reagent position are arranged in an arc. A rotary sampling arm is installed inside the box body. A cavity is opened inside the rotary sampling arm. A suction pipe is fixedly connected to the top of the cavity. An electromagnetic valve is installed inside the suction pipe. A sampling needle is fixedly connected through the bottom wall of the cavity. An anti-blocking component is installed on one side side wall of the sampling needle, and an anti-leakage component is installed on the other side of the sampling needle. An adsorption component is installed inside the box body;

[0008] The anti-blocking component includes an installation box. The installation box is of an arc structure. The installation box is fixedly connected to the side wall of the sampling needle. The inner top wall of the installation box is symmetrically and fixedly connected with first springs. The two first springs are jointly fixedly connected with an arc-shaped plate. The top of the arc-shaped plate is symmetrically and fixedly connected with second magnets. The inner top wall of the installation box is symmetrically and fixedly connected with first magnets;

[0009] Each first magnet is magnetically attracted to the adjacent second magnet. The inner top wall of the installation box is fixedly connected with an electromagnet. The top wall of the arc-shaped plate is fixedly connected with a permanent magnet. The inner side wall of the arc-shaped plate is embedded and fixedly connected with a fourth magnet. A scraping ring is slidably connected inside the sampling needle. The outer side wall of the scraping ring is embedded and fixedly connected with a third magnet. The third magnet and the fourth magnet are magnetically attracted.

[0010] Further, the anti-leakage component includes a sealing box. The sealing box is of an arc structure. The sealing box is fixedly connected to the side wall of the sampling needle. A partition is fixedly connected to the inner side wall of the sealing box. The partition is symmetrically and slidably penetrated by a connecting rod. The tops of the two connecting rods are jointly fixedly connected with a first piston plate, and the bottoms are jointly fixedly connected with a second piston plate.

[0011] Further, both the first piston plate and the second piston plate are hermetically slidably connected to the inner wall of the sealing box. The top of the first piston plate is symmetrically and fixedly connected with second springs. The top of each second spring is fixedly connected to the inner top wall of the sealing box. A first connecting pipe is fixedly connected to the side wall of the sealing box.

[0012] Further, one end of the first connecting pipe is fixedly connected to the suction pipe. A one-way air outlet valve is installed inside the first connecting pipe. A pressure relief pipe is fixedly connected to the side wall of the sealing box. A one-way air inlet valve is installed inside the pressure relief pipe. Both the first connecting pipe and the pressure relief pipe are located above the partition. An exhaust hole is opened on the side wall of the sealing box. The exhaust hole is located between the first piston plate and the partition. A groove is opened on the bottom wall of the sampling needle.

[0013] Further, the groove body is of an arc structure, an airbag is fixedly connected inside the groove body, a second connecting pipe is fixedly communicated with the side wall of the sealing box, one end of the second connecting pipe penetrates through the side wall of the groove body and is fixedly communicated with the airbag, a control valve is installed inside the second connecting pipe, and the second connecting pipe is located below the partition board.

[0014] Further, the adsorption assembly includes an adsorption plate, the adsorption plate is fixedly connected to the inner bottom wall of the box body, fixing blocks are symmetrically and fixedly connected to the side wall of the adsorption plate, a motor is fixedly connected to the side wall of one of the fixing blocks, and an output end of the motor is fixedly connected to a reciprocating lead screw.

[0015] Further, one end of the reciprocating lead screw penetrates through and is rotatably connected to the side walls of the two fixing blocks, a threaded sleeve is threadedly connected to the side wall of the reciprocating lead screw, a friction block is fixedly connected to the side wall of the threaded sleeve, and the friction block abuts against and slides on the side wall of the adsorption plate.

[0016] The present invention also discloses a test method for a test system of a fully automatic coagulation tester, and the specific operation steps are as follows:

[0017] S1: A cavity is formed inside the rotating sampling arm, an air extraction pipe is fixedly communicated with the top end of the cavity, and the air extraction pipe is externally connected to a negative pressure pump for generating negative pressure to suck liquid.

[0018] S2: Electrify the electromagnet, so that the same-sex magnetic poles are generated between the adjacent end faces of the electromagnet and the permanent magnet. Utilize the generated magnetic repulsion force to push the arc-shaped plate downward, so that the first magnet is separated from the second magnet, and under the elastic action of the first spring, push the arc-shaped plate to move downward along the outer wall of the sampling needle. The magnetic attraction force between the third magnet and the fourth magnet can make the scraping ring move synchronously with the arc-shaped plate, so as to scrape along the inner wall of the sampling needle through the scraping ring, and scrape off the impurities remaining on the inner wall of the sampling needle.

[0019] S3: Close the solenoid valve inside the air extraction pipe, open the one-way air outlet valve and the control valve, and extract air through an externally connected negative pressure pump, so that the air between the sealing box and the first piston plate is extracted along the first connecting pipe and the air extraction pipe. During this process, utilize the pressure difference generated between the sealing box and the first piston plate to drive the first piston plate to move upward, drive the second piston plate to move upward synchronously through the connecting rod, and utilize the increased pressure between the second piston plate and the partition board, and the air therebetween enters the airbag through the second connecting pipe, so that the airbag expands, and the fully expanded airbag realizes the port plugging of the sampling needle.

[0020] S4: Close the one-way air outlet valve and open the one-way air inlet valve. Under the elastic action of the second spring, the first piston plate is pushed to move back to its original position. The second piston plate is driven to move downward synchronously through the connecting rod, so that the second piston plate moves to its original position. By using the pressure difference generated between the second piston plate and the partition plate, the air inside the airbag is pumped back between the second piston plate and the partition plate along the second connecting pipe again, causing the airbag to contract, thereby opening the port of the sampling needle, and then the liquid discharging operation is carried out;

[0021] S5: Drive the reciprocating lead screw to rotate through the output end of the motor. By using the rotation of the reciprocating lead screw, the threaded sleeve and the friction block are driven to slide reciprocally in the horizontal direction. Through the continuous friction between the friction block and the adsorption plate, an electrostatic effect is generated, so as to centrally adsorb the impurities scattered inside the box body and collect the impurities centrally.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] By setting the anti-blocking component, the electromagnet is energized, so that the same-sex magnetic poles are generated between the adjacent end faces of the electromagnet and the permanent magnet. By using the generated magnetic repulsive force, the arc-shaped plate is pushed downward, so that the first magnet is separated from the second magnet. Under the elastic action of the first spring, the arc-shaped plate is pushed to move downward along the outer wall of the sampling needle. The inner wall of the arc-shaped plate is embedded with a fourth magnet, and the magnetic attraction force between the third magnet and the fourth magnet is large enough to make the scraping ring move synchronously with the arc-shaped plate. Thus, the scraping ring scrapes along the inner wall of the sampling needle to scrape off the impurities remaining on the inner wall of the sampling needle. By timely cleaning the impurities remaining inside the sampling needle each time, it is ensured that the sampling needle can be used normally, and the blockage of the sampling needle after multiple uses is avoided, which affects the normal liquid suction and liquid discharging operations; By setting the anti-leakage component, the solenoid valve inside the air extraction pipe is closed, the one-way air outlet valve and the control valve are opened, and the air between the sealing box and the first piston plate is extracted through the external negative pressure pump. During this process, the pressure difference generated between the sealing box and the first piston plate is used to drive the first piston plate to move upward. At this time, the second spring is in a compressed state. The second piston plate is driven to move upward synchronously through the connecting rod. As the second piston plate moves upward, the pressure between the second piston plate and the partition plate increases. At this time, the air between the second piston plate and the partition plate enters the airbag along the second connecting pipe, causing the airbag to expand. The fully expanded airbag seals the port of the sampling needle. Even if there are subsequent problems, the sample already sucked inside the sampling needle will not drip, ensuring the sample sampling volume, reducing errors, and improving the test accuracy;

[0024] By setting up the adsorption component, the output end of the motor drives the reciprocating lead screw to rotate. By using the rotation of the reciprocating lead screw, the threaded sleeve and the friction block are driven to slide reciprocally in the horizontal direction. Through the continuous friction between the friction block and the adsorption plate, an electrostatic effect is generated, so as to centrally adsorb the impurities scattered inside the box. After the test is completed, only the impurities at the adsorption plate need to be cleaned, reducing the need for the staff to clean the impurities scattered inside the box after the test is completed, and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2 is the structural schematic diagram of the box body in the present invention;

[0027] Figure 3 is the structural schematic diagram of the rotary sample adding arm in the present invention;

[0028] Figure 4 is the cross-sectional view of the rotary sample adding arm in the present invention;

[0029] Figure 5 is the cross-sectional view of the anti-blocking component and the sample adding needle in the present invention;

[0030] Figure 6 is Figure 5 the partial enlarged schematic view of part A in

[0031] Figure 7 is the structural schematic diagram of the anti-blocking component in the present invention;

[0032] Figure 8 is the structural schematic diagram of the anti-leakage component in the present invention;

[0033] Figure 9 is Figure 8 the partial enlarged schematic view of part B in

[0034] Figure 10 is the main structural schematic diagram of the anti-leakage component in the present invention;

[0035] Figure 11 is the structural schematic diagram of the adsorption component in the present invention.

[0036] In the figure: 1. Test bench; 11. Box body; 2. Sample position; 21. Test position; 22. Reagent position; 3. Rotary sample adding arm; 31. Suction pipe; 32. Cavity; 33. Sample adding needle; 34. Solenoid valve; 4. Anti-blocking component; 41. Installation box; 42. First spring; 43. Arc plate; 44. First magnet; 45. Second magnet; 46. Electromagnet; 47. Permanent magnet; 48. Scraping ring; 49. Third magnet; 410. Fourth magnet; 5. Anti-leakage component; 51. Sealing box; 52. Partition board; 53. First connecting pipe; 54. Unidirectional air outlet valve; 55. Pressure relief pipe; 56. Unidirectional air inlet valve; 57. Tank body; 58. Air bag; 59. Second connecting pipe; 510. Control valve; 511. Second spring; 512. First piston plate; 513. Connecting rod; 514. Second piston plate; 515. Exhaust hole; 6. Adsorption component; 61. Adsorption plate; 62. Fixed block; 63. Motor; 64. Reciprocating lead screw; 65. Threaded sleeve; 66. Friction block. Detailed implementation manners

[0037] 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 only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In order to solve the technical problem that after the sample adding needle 33 is cleaned after use, there will still be some residual impurities. If not cleaned in time, it will be blocked after a long time, affecting the normal liquid suction or liquid discharge operation of the sample adding needle 33, as Figure 1 - Figure 7 shown, the following preferred technical solutions are provided:

[0039] The test system of the fully automatic coagulation tester includes a test bench 1 and a box body 11. The box body 11 is fixedly installed at the top of the test bench 1. Inside the box body 11, a sample position 2, a test position 21, and a reagent position 22 are fixedly installed. The sample position 2, the test position 21, and the reagent position 22 are arranged in an arc. A rotary sampling arm 3 is installed inside the box body 11. A cavity 32 is opened inside the rotary sampling arm 3. A suction pipe 31 is fixedly connected to the top of the cavity 32. The suction pipe 31 is externally connected to a negative pressure pump for generating negative pressure to suck liquid. A solenoid valve 34 is installed inside the suction pipe 31. The bottom wall of the cavity 32 is fixedly connected through and with a sampling needle 33. The rotary sampling arm 3 drives the sampling needle 33 to rotate into the specimen test tube at the sample position 2, and sampling is carried out by pumping air with the negative pressure pump. Subsequently, the rotary sampling arm 3 rotates to the test position 21 for sample addition, and finally, it is added to the reagent position 22 for testing. An anti-blocking component 4 is installed on one side side wall of the sampling needle 33. By setting the anti-blocking component 4, the electromagnet 46 is energized, so that the same-sex magnetic poles are generated between the adjacent end faces of the electromagnet 46 and the permanent magnet 47. Using the generated magnetic repulsion force, the arc-shaped plate 43 is pushed downward, so that the first magnet 44 is separated from the second magnet 45, and under the elastic action of the first spring 42, the arc-shaped plate 43 is pushed to move downward along the outer side wall of the sampling needle 33. Among them, a fourth magnet 410 is embedded in the inner side wall of the arc-shaped plate 43. The magnetic attraction force between the third magnet 49 and the fourth magnet 410 is large enough to enable the scraping ring 48 to move synchronously with the arc-shaped plate 43, so as to scrape along the inner wall of the sampling needle 33 through the scraping ring 48, and scrape off the impurities remaining on the inner wall of the sampling needle 33. By timely cleaning the impurities remaining inside the sampling needle 33 each time, it is ensured that the sampling needle 33 can be used normally, and it is avoided that the sampling needle 33 is blocked after being used multiple times, affecting the normal liquid suction and drainage operations.

[0040] An anti-leakage component 5 is installed on the other side of the sampling needle 33. By setting the anti-leakage component 5, the solenoid valve 34 inside the suction pipe 31 is closed, and the one-way air outlet valve 54 and the control valve 510 are opened. By pumping air with an external negative pressure pump, the air between the sealing box 51 and the first piston plate 512 is drawn out along the first connecting pipe 53 and the suction pipe 31. During this process, using the pressure difference generated between the sealing box 51 and the first piston plate 512, the first piston plate 512 is driven to move upward. At this time, the second spring 511 is in a compressed state, and the second piston plate 514 is driven to move upward synchronously through the connecting rod 513. As the second piston plate 514 moves upward, the pressure between the second piston plate 514 and the partition plate 52 increases. At this time, the air between the second piston plate 514 and the partition plate 52 enters the airbag 58 through the second connecting pipe 59, causing the airbag 58 to expand. After being fully expanded, the airbag 58 seals the port of the sampling needle 33. Even if there are subsequent problems, the sample already sucked inside the sampling needle 33 will not drip, ensuring the sample sampling volume, reducing errors, and improving the test accuracy.

[0041] Inside the box body 11, an adsorption component 6 is installed. By setting the adsorption component 6, the output end of the motor 63 drives the reciprocating lead screw 64 to rotate. By using the rotation of the reciprocating lead screw 64, the thread sleeve 65 and the friction block 66 are driven to slide reciprocally in the horizontal direction. Through the continuous friction between the friction block 66 and the adsorption plate 61, an electrostatic effect is generated, so as to centrally adsorb the impurities scattered inside the box body 11 and centrally collect the impurities. After the test is completed, only the impurities at the adsorption plate 61 need to be cleaned, reducing the need for the staff to clean the impurities scattered inside the box body 11 after the test is completed, and improving the practicability of the device.

[0042] The anti-blocking component 4 includes an installation box 41. The installation box 41 is of an arc-shaped structure. The installation box 41 is fixedly connected to the side wall of the sampling needle 33. The inner top wall of the installation box 41 is symmetrically and fixedly connected with first springs 42. The two first springs 42 are jointly fixedly connected with an arc-shaped plate 43. The top end of the arc-shaped plate 43 is symmetrically and fixedly connected with second magnets 45. The inner top wall of the installation box 41 is symmetrically and fixedly connected with first magnets 44.

[0043] Each first magnet 44 is magnetically attracted to the adjacent second magnet 45. The inner top wall of the installation box 41 is fixedly connected with an electromagnet 46. The top wall of the arc-shaped plate 43 is fixedly connected with a permanent magnet 47. The inner side wall of the arc-shaped plate 43 is fixedly connected with a fourth magnet 410 in an embedded manner. A scraping ring 48 is slidably connected inside the sampling needle 33. A third magnet 49 is fixedly connected to the outer side wall of the scraping ring 48 in an embedded manner. The third magnet 49 and the fourth magnet 410 are magnetically attracted to each other.

[0044] In this solution: Since fibrin filaments may deposit inside the sample addition needle 33, reagent residues or accumulation of other impurities may occur, resulting in impurity blockage of the sample addition needle 33. Even after flushing, due to the small diameter of the sample addition needle 33, there will still be some impurities remaining inside the sample addition needle 33. If not cleaned thoroughly, after multiple tests, the sample addition needle 33 will inevitably become blocked, affecting the normal liquid suction or drainage operation. After each test and flushing are completed, the electromagnet 46 is energized, causing a same-sex magnetic pole to be generated between the adjacent end faces of the electromagnet 46 and the permanent magnet 47. Using the generated magnetic repulsion force, the arc-shaped plate 43 is pushed downward, causing the first magnet 44 to separate from the second magnet 45. Under the elastic action of the first spring 42, the arc-shaped plate 43 is pushed to move downward along the outer wall of the sample addition needle 33. An inner wall of the arc-shaped plate 43 is embedded with a fourth magnet 410, and the magnetic attraction force between the third magnet 49 and the fourth magnet 410 is large enough to enable the scraping ring 48 to move synchronously with the arc-shaped plate 43. Moreover, the scraping ring 48 is a thin-ring with a light weight, enabling the scraping ring 48 to move synchronously with the arc-shaped plate 43. Thus, by scraping along the inner wall of the sample addition needle 33 with the scraping ring 48, the impurities remaining on the inner wall of the sample addition needle 33 are scraped off. By timely cleaning the impurities remaining inside the sample addition needle 33 each time, it is ensured that the sample addition needle 33 can be used normally, avoiding blockage of the sample addition needle 33 after multiple uses and affecting the normal liquid suction and drainage operations.

[0045] When the arc-shaped plate 43 moves to the lower limit position, by changing the current direction of the electromagnet 46, an opposite-sex magnetic pole is generated between the electromagnet 46 and the permanent magnet 47. Using the generated magnetic attraction force, the arc-shaped plate 43 starts to slide downward. At this time, the first spring 42 is in a compressed state until the first magnet 44 contacts the second magnet 45. The magnetic attraction force between the first magnet 44 and the second magnet 45 is greater than the elastic force of the first spring 42, thereby enabling the arc-shaped plate 43 to be limited, for subsequent continuous cleaning of the inside of the sample addition needle 33. Also, by changing the current flow direction of the electromagnet 46 multiple times for multiple cleanings, impurity accumulation inside the sample addition needle 33 can be avoided, ensuring that the sample addition needle 33 can normally perform liquid suction or drainage operations.

[0046] To solve the technical problem that if the sample addition needle 33 is blocked, it will affect the normal liquid suction or drainage process, resulting in a dripping phenomenon. In addition, a sealing problem at the connection of the sample addition needle 33 will also cause a dripping problem, resulting in an error in the liquid suction volume of the sample, affecting the test result, as Figures 8 - 10 shown, the following preferred technical solution is provided:

[0047] The leak-proof component 5 includes a sealing box 51. The sealing box 51 is of an arc-shaped structure and is fixedly connected to the side wall of the sampling needle 33. A partition 52 is fixedly connected to the inner side wall of the sealing box 51. The partition 52 symmetrically penetrates and is slidably connected with a connecting rod 513. The tops of the two connecting rods 513 are fixedly connected together with a first piston plate 512, and the bottoms are fixedly connected together with a second piston plate 514.

[0048] Both the first piston plate 512 and the second piston plate 514 are hermetically and slidably connected to the inner wall of the sealing box 51. The top of the first piston plate 512 is symmetrically and fixedly connected with a second spring 511. The top of each second spring 511 is fixedly connected to the inner top wall of the sealing box 51. The side wall of the sealing box 51 is fixedly communicated with a first connecting pipe 53.

[0049] One end of the first connecting pipe 53 is fixedly communicated with the air extraction pipe 31. A one-way air outlet valve 54 is installed inside the first connecting pipe 53. The side wall of the sealing box 51 is fixedly communicated with a pressure relief pipe 55. A one-way air inlet valve 56 is installed inside the pressure relief pipe 55. Both the first connecting pipe 53 and the pressure relief pipe 55 are located above the partition 52. An exhaust hole 515 is opened on the side wall of the sealing box 51. The exhaust hole 515 is located between the first piston plate 512 and the partition 52. A groove 57 is opened on the bottom wall of the sampling needle 33.

[0050] The groove 57 is of an arc-shaped structure. An airbag 58 is fixedly connected inside the groove 57. The side wall of the sealing box 51 is fixedly communicated with a second connecting pipe 59. One end of the second connecting pipe 59 penetrates the side wall of the groove 57 and is fixedly connected with the airbag 58. A control valve 510 is installed inside the second connecting pipe 59. The second connecting pipe 59 is located below the partition 52.

[0051] In this solution: Since there is a problem of sample dripping during the liquid suction process of the sampling needle 33, to avoid sample dripping, after the sampling needle 33 finishes sucking liquid, the solenoid valve 34 inside the air extraction pipe 31 is closed, and the one-way air outlet valve 54 and the control valve 510 are opened. By using an external negative pressure pump to extract air, the air between the sealing box 51 and the first piston plate 512 is extracted along the first connecting pipe 53 and the air extraction pipe 31. During this process, by using the pressure difference generated between the sealing box 51 and the first piston plate 512, the first piston plate 512 is driven to move upward. At this time, the second spring 511 is in a compressed state. The second piston plate 514 is driven to move upward synchronously through the connecting rod 513. As the second piston plate 514 moves upward, the pressure between the second piston plate 514 and the partition 52 increases. At this time, the air between the second piston plate 514 and the partition 52 enters the airbag 58 through the second connecting pipe 59, causing the airbag 58 to expand. After being fully expanded, the airbag 58 seals the port of the sampling needle 33. Even if there are subsequent problems, the samples already sucked inside the sampling needle 33 will not drip, ensuring the sample sampling volume, reducing errors, and improving the test accuracy;

[0052] When it is necessary to discharge the sample inside the sampling needle 33, the one-way air outlet valve 54 is closed and the one-way air inlet valve 56 is opened. At this time, the control valve 510 is still open. After the one-way air inlet valve 56 is opened, the first piston plate 512 and the sealing box 51 are connected to the outside, and the negative pressure disappears. Under the elastic action of the second spring 511, the first piston plate 512 is pushed to reset and move. On the one hand, it is convenient for subsequent use. On the other hand, the first piston plate 512 moves downward, and the second piston plate 514 is driven to move downward synchronously through the connecting rod 513, so that the second piston plate 514 moves to its original position. The pressure difference between the second piston plate 514 and the partition 52 is used to make the air inside the airbag 58 be drawn back along the second connecting pipe 59 to between the second piston plate 514 and the partition 52, so that the airbag 58 shrinks, thereby opening the port of the sampling needle 33 and then performing the discharge operation.

[0053] In order to solve the problem that after the residual impurities in the sample adding needle 33 are cleaned out, they will be scattered on the bottom wall of the box body 11, and the staff will still need to clean them after the test is completed, which is a cumbersome technical problem. Figure 2 - Figure 3 and Figure 10 As shown, the following preferred technical solutions are provided:

[0054] The adsorption assembly 6 includes an adsorption plate 61, which is fixedly connected to the inner bottom wall of the box body 11. The side walls of the adsorption plate 61 are symmetrically fixedly connected with fixed blocks 62, one of the side walls of the fixed blocks 62 is fixedly connected with a motor 63, and the output end of the motor 63 is fixedly connected with a reciprocating screw 64.

[0055] One end of the reciprocating screw 64 penetrates and is rotatably connected to the side walls of the two fixed blocks 62 . The side walls of the reciprocating screw 64 are threadedly connected with a threaded sleeve 65 . The side walls of the threaded sleeve 65 are fixedly connected with a friction block 66 . The friction block 66 slides against the side walls of the adsorption plate 61 .

[0056] In this solution: after the anti-blocking component 4 works, the impurities retained in the sample adding needle 33 will be cleaned out from the inside and scattered inside the box 11, which is inconvenient for subsequent staff to clean; when the impurities inside the sample adding needle 33 are cleaned, the driving motor 63 drives the reciprocating screw 64 to rotate through the output end of the motor 63, and the reciprocating screw 64 rotates to drive the threaded sleeve 65 and the friction block 66 to slide back and forth in the horizontal direction. The friction block 66 and the adsorption plate 61 are continuously rubbed to generate static electricity, thereby centrally adsorbing the impurities scattered inside the box 11 and collecting the impurities. After the test is completed, it is only necessary to clean the impurities at the adsorption plate 61. Compared with the staff who still need to clean the impurities scattered inside the box 11 after the test is completed, this device is simpler and more convenient, improves the practicality of the device, and improves the cleaning efficiency.

[0057] Testing method for the testing system of a fully automatic coagulation tester, and the specific operation steps are as follows:

[0058] Step 1: The inside of the sample adding arm 3 is provided with a cavity 32. The top end of the cavity 32 is fixedly connected with an air extraction pipe 31, and the air extraction pipe 31 is externally connected to a negative pressure pump for generating negative pressure to suck liquid.

[0059] Step 2: Electrify the electromagnet 46 so that like magnetic poles are generated between the adjacent end faces of the electromagnet 46 and the permanent magnet 47. Utilize the generated magnetic repulsion force to push the arc-shaped plate 43 downward, causing the first magnet 44 to be separated from the second magnet 45. Under the elastic action of the first spring 42, push the arc-shaped plate 43 to move downward along the outer wall of the sampling needle 33. The magnetic attraction force between the third magnet 49 and the fourth magnet 410 can cause the scraping ring 48 to move synchronously with the arc-shaped plate 43, thereby scraping the impurities remaining on the inner wall of the sampling needle 33 by scraping along the inner wall of the sampling needle 33 with the scraping ring 48.

[0060] Step 3: Close the solenoid valve 34 inside the air extraction pipe 31, and open the one-way air outlet valve 54 and the control valve 510. Extract air through an externally connected negative pressure pump so that the air between the sealing box 51 and the first piston plate 512 is extracted along the first connecting pipe 53 and the air extraction pipe 31. During this process, utilize the pressure difference generated by the sealing box 51 and the first piston plate 512 to drive the first piston plate 512 to move upward, and drive the second piston plate 514 to move upward synchronously through the connecting rod 513. Utilize the increased pressure between the second piston plate 514 and the partition plate 52, and the air therebetween enters the airbag 58 along the second connecting pipe 59, causing the airbag 58 to expand. After complete expansion, the airbag 58 seals the port of the sampling needle 33.

[0061] Step 4: Close the one-way air outlet valve 54 and open the one-way air inlet valve 56. Under the elastic action of the second spring 511, push the first piston plate 512 to move back to its original position, and drive the second piston plate 514 to move downward synchronously through the connecting rod 513, so that the second piston plate 514 moves to its original position. Utilize the pressure difference generated between the second piston plate 514 and the partition plate 52 to cause the air inside the airbag 58 to be pumped back to the space between the second piston plate 514 and the partition plate 52 along the second connecting pipe 59 again, causing the airbag 58 to contract, thereby opening the port of the sampling needle 33, and then performing the liquid discharging operation.

[0062] Step 5: Drive the reciprocating lead screw 64 to rotate through the output end of the motor 63. Utilize the rotation of the reciprocating lead screw 64 to drive the threaded sleeve 65 and the friction block 66 to slide reciprocally in the horizontal direction. Continuously rub the friction block 66 against the adsorption plate 61 to generate an electrostatic effect, thereby centrally adsorbing the impurities scattered inside the box body 11 and centrally collecting the impurities.

[0063] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test system for a fully automatic coagulation tester, comprising a test bench (1) and a housing (11), characterized in that: The box (11) is fixedly mounted on the top of the test bench (1); a sample position (2), a test position (21) and a reagent position (22) are fixedly mounted inside the box (11); the sample position (2), the test position (21) and the reagent position (22) are arranged in an arc shape; a rotating sample loading arm (3) is mounted inside the box (11); a cavity (32) is provided inside the rotating sample loading arm (3); a suction pipe (31) is fixedly connected to the top of the cavity (32); a solenoid valve (34) is mounted inside the suction pipe (31); a sample loading needle (33) is fixedly connected to the bottom wall of the cavity (32); an anti-blocking component (4) is mounted on one side wall of the sample loading needle (33); a leak-proof component (5) is mounted on the other side of the sample loading needle (33); and an adsorption component (6) is mounted inside the box (11); The anti-blocking component (4) comprises a mounting box (41), the mounting box (41) being an arc-shaped structure, the mounting box (41) being fixedly connected to the side wall of the sample injection needle (33), the inner top wall of the mounting box (41) being symmetrically fixedly connected to a first spring (42), the two first springs (42) being commonly fixedly connected to an arc-shaped plate (43), the top end of the arc-shaped plate (43) being symmetrically fixedly connected to a second magnet (45), and the inner top wall of the mounting box (41) being symmetrically fixedly connected to a first magnet (44); Each of the first magnets (44) is magnetically attracted to an adjacent second magnet (45); an electromagnet (46) is fixedly connected to the inner top wall of the installation box (41); a permanent magnet (47) is fixedly connected to the top wall of the arc plate (43); a fourth magnet (410) is embedded and fixedly connected to the inner side wall of the arc plate (43); a scraper ring (48) is slidably connected to the inside of the sample injection needle (33); a third magnet (49) is embedded and fixedly connected to the outer side wall of the scraper ring (48); and the third magnet (49) and the fourth magnet (410) are magnetically attracted to each other.

2. The test system of the fully automatic coagulation tester according to claim 1, characterized in that: The leak-proof component (5) comprises a sealing box (51), the sealing box (51) being an arc-shaped structure, the sealing box (51) being fixedly connected to the side wall of the sample injection needle (33), the inner side wall of the sealing box (51) being fixedly connected to a partition (52), the partition (52) being symmetrically penetrated and slidably connected to connecting rods (513), the top ends of the two connecting rods (513) being fixedly connected to a first piston plate (512), and the bottom ends of the two connecting rods (513) being fixedly connected to a second piston plate (514).

3. The test system of the fully automatic coagulation tester according to claim 2, characterized in that: The first piston plate (512) and the second piston plate (514) are both sealingly and slidably connected to the inner wall of the sealing box (51); the top end of the first piston plate (512) is symmetrically and fixedly connected to the second spring (511); the top end of each second spring (511) is fixedly connected to the inner top wall of the sealing box (51); and the side wall of the sealing box (51) is fixedly connected to the first connecting pipe (53).

4. The test system of the fully automatic coagulation tester according to claim 3, characterized in that: One end of the first connecting tube (53) is fixedly connected to the exhaust tube (31), a one-way air outlet valve (54) is installed inside the first connecting tube (53), a pressure relief tube (55) is fixedly connected to the side wall of the sealing box (51), a one-way air inlet valve (56) is installed inside the pressure relief tube (55), the first connecting tube (53) and the pressure relief tube (55) are both located above the partition (52), an exhaust hole (515) is provided on the side wall of the sealing box (51), the exhaust hole (515) is located between the first piston plate (512) and the partition (52), and a groove (57) is provided on the bottom wall of the sample injection needle (33).

5. The test system of the fully automatic coagulation tester according to claim 4, characterized in that: The trough body (57) is an arc-shaped structure. An airbag (58) is fixedly connected to the interior of the trough body (57). A second connecting pipe (59) is fixedly connected to the side wall of the sealing box (51). One end of the second connecting pipe (59) passes through the side wall of the trough body (57) and is fixedly connected to the airbag (58). A control valve (510) is installed inside the second connecting pipe (59). The second connecting pipe (59) is located below the partition (52).

6. The test system of the fully automatic coagulation tester according to claim 5, characterized in that: The adsorption assembly (6) comprises an adsorption plate (61), the adsorption plate (61) being fixedly connected to the inner bottom wall of the box body (11), the side walls of the adsorption plate (61) being symmetrically fixedly connected to fixed blocks (62), one side wall of the fixed blocks (62) being fixedly connected to a motor (63), and the output end of the motor (63) being fixedly connected to a reciprocating screw (64).

7. The test system of the fully automatic coagulation tester according to claim 6, characterized in that: One end of the reciprocating screw (64) passes through and is rotatably connected to the side walls of the two fixed blocks (62); the side walls of the reciprocating screw (64) are threadedly connected to a threaded sleeve (65); the side walls of the threaded sleeve (65) are fixedly connected to a friction block (66); the friction block (66) slides against the side walls of the adsorption plate (61).

8. A method for testing a test system of a fully automatic coagulation tester, using the test system of the fully automatic coagulation tester according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: S1: A cavity (32) is provided inside the rotating sample loading arm (3), the top of the cavity (32) is fixedly connected to an air suction pipe (31), and the air suction pipe (31) is externally connected to a negative pressure pump for generating negative pressure to aspirate liquid; S2: energizing the electromagnet (46) so that like magnetic poles are generated between adjacent end faces of the electromagnet (46) and the permanent magnet (47). The generated magnetic repulsion is used to push the arc plate (43) downward, so that the first magnet (44) and the second magnet (45) are separated from each other. Under the elastic action of the first spring (42), the arc plate (43) is pushed downward along the outer wall of the sample needle (33). The magnetic attraction between the third magnet (49) and the fourth magnet (410) can cause the scraper ring (48) to move synchronously with the arc plate (43), so that the scraper ring (48) scrapes along the inner wall of the sample needle (33) to scrape off impurities remaining on the inner wall of the sample needle (33); S3: closing the solenoid valve (34) inside the air extraction pipe (31), and opening the one-way air outlet valve (54) and the control valve (510), and extracting air through an external negative pressure pump, so that the air between the sealing box (51) and the first piston plate (512) is extracted along the first connecting pipe (53) and the air extraction pipe (31). During this process, the pressure difference between the sealing box (51) and the first piston plate (512) is used to drive the first piston plate (512) to move upward, and the second piston plate (514) is driven to move upward synchronously through the connecting rod (513). The pressure between the second piston plate (514) and the partition (52) is increased, and the air therebetween enters the airbag (58) along the second connecting pipe (59), so that the airbag (58) expands. The fully expanded airbag (58) seals the port of the sample injection needle (33); S4: The one-way air outlet valve (54) is closed and the one-way air inlet valve (56) is opened. Under the elastic action of the second spring (511), the first piston plate (512) is pushed to reset and move, and the second piston plate (514) is driven to move downward synchronously through the connecting rod (513), so that the second piston plate (514) moves to the original position. The pressure difference between the second piston plate (514) and the partition plate (52) is used to draw the air inside the airbag (58) back to between the second piston plate (514) and the partition plate (52) along the second connecting pipe (59), so that the airbag (58) contracts, thereby opening the port of the sample injection needle (33), and then performing the liquid discharge operation; S5: The reciprocating screw (64) is driven to rotate by the output end of the motor (63). The reciprocating screw (64) is driven to rotate to drive the threaded sleeve (65) and the friction block (66) to slide back and forth in the horizontal direction. The friction block (66) and the adsorption plate (61) are continuously rubbed to generate static electricity, thereby centrally adsorbing and collecting impurities scattered inside the box (11).

Images