A feeding device for a coagulation analyzer

Abstract

This application discloses a feeding device for a coagulation analyzer, comprising: a mounting cavity, a reagent dispensing head, a dust cover, a spring assembly, a through hole, a test tube rack, a lifting mechanism, a lifting block, and a lever amplification mechanism, all disposed within the coagulation analyzer. When the lifting mechanism drives the test tube rack to rise, the lifting block contacts and pushes the second end of the lever arm upward. The lever arm rotates around its fulcrum axis, causing the first end to move downward and abut against the inner wall of the mounting cavity. Simultaneously, the second end lifts the dust cover, overcoming the preload of the spring assembly and allowing the outlet end of the reagent dispensing head to pass through the through hole. This invention amplifies the lifting force of the lifting block through the lever amplification mechanism, enabling a smaller lifting force to overcome the preload of the spring assembly on the dust cover. This significantly reduces the driving force required for the electric push rod, thereby reducing the system load. The rotational movement of the lever arm is smoother than direct pushing, effectively reducing impact vibration and avoiding interference with the reagent dispensing head and sample test tubes.

Description

Technical Field

[0001] This utility model particularly relates to a feeding device for a coagulation analyzer. Background Technology

[0002] Coagulation analyzers are essential devices in clinical medicine for detecting blood clotting function. They measure parameters such as clotting time by adding specific reagents (such as thromboplastin and calcium ion solution) to plasma samples. In existing technology, the loading device of coagulation analyzers typically uses a direct lifting structure to open the dust cover, specifically as follows:

[0003] Existing technologies mostly employ a method where a lifting block directly pushes the dust cover. Specifically, when the test tube rack is driven upward by a lifting mechanism, the lifting block fixed to the test tube rack directly contacts the bottom of the dust cover. The mechanical pushing force overcomes the spring preload, causing the dust cover to open upward. While this structure is simple, it has the following drawbacks:

[0004] High load problem: The spring preload is large, and the electric push rod needs to provide a large driving force from the lifting mechanism to push directly, resulting in high load on the electric push rod and shortened life;

[0005] Unstable movement: The hard contact between the lifting block and the dust cover can easily generate impact vibration, which may interfere with the accuracy of reagent dispensing. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a feeding device for a coagulation analyzer.

[0007] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0008] A feeding device for a coagulation analyzer, comprising:

[0009] The mounting cavity inside the coagulation analyzer has a reagent dispensing head and a dust cover at its top. The dust cover is connected to the top of the mounting cavity via a spring assembly and surrounds the reagent dispensing head. The dust cover has a through hole.

[0010] The test tube rack, located inside the mounting cavity and below the dust cover, is used to hold test tubes containing plasma to be tested;

[0011] The lifting mechanism, connected to the test tube rack, is used to drive the test tube rack to move vertically.

[0012] The lifting block is fixed to the upper surface of the test tube rack and moves synchronously with the test tube rack;

[0013] A lever amplification mechanism includes a lever arm and a fulcrum shaft. The first end of the lever arm is rotatably connected to the fulcrum shaft, and the fulcrum shaft is fixed to the side wall of the mounting cavity. The second end of the lever arm extends to the bottom of the dust cover.

[0014] When the lifting mechanism drives the test tube rack to rise, the lifting block contacts and pushes the second end of the lever arm to move upward. The lever arm rotates around the fulcrum axis, causing the first end to move downward and abut against the inner wall of the mounting cavity. At the same time, the second end lifts the dust cover, overcoming the pre-tightening force of the spring assembly so that the outlet end of the reagent dispensing head passes through the through hole.

[0015] Preferably, the upper surface of the lifting block is provided with a limiting groove that is adapted to the outer periphery of the second end of the lever arm. The cross-section of the limiting groove is semi-circular and is used to limit the lateral displacement of the second end during the lifting process.

[0016] Preferably, a mounting box is fixed on the side wall of the mounting cavity, and a movable groove is provided in the mounting box. The fulcrum shaft is laterally fixed between the two side walls of the movable groove. The first end of the lever arm is located in the movable groove and rotates around the fulcrum shaft. The second end of the lever arm extends out of the movable groove and cooperates with the dust cover.

[0017] Preferably, the lifting mechanism includes a fixed base for fixing the test tube rack, a scissor lift platform hinged to the fixed base, and an electric push rod hinged to the middle of the scissor lift platform connecting rod.

[0018] Preferably, it also includes a dispensing rack fixed to the top of the mounting cavity, and the reagent dispensing head is detachably mounted on the dispensing rack.

[0019] Preferably, the spring assembly includes a connecting rod vertically fixed to the distribution frame and a compression spring sleeved on the connecting rod. The upper end of the compression spring is fixed to the distribution frame, and the lower end is connected to a dust cover. The dust cover is provided with a guide hole that slides with the connecting rod.

[0020] The beneficial effects of this utility model are:

[0021] This invention amplifies the lifting force of the lifting block through a lever amplification mechanism, enabling a smaller lifting force to overcome the preload of the spring assembly on the dust cover. Compared to directly lifting the dust cover, the lever amplification mechanism significantly reduces the driving force required by the electric push rod, thereby reducing the system load. The rotational movement of the lever arm is smoother than direct pushing, effectively reducing impact vibration and avoiding interference with the reagent dispensing head and sample tubes. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the feeding device for a coagulation analyzer according to this application. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the feeding device for a coagulation analyzer according to this application. Figure 2 ;

[0025] Figure 3 For the purposes of this application Figure 2 A magnified view of part A in the image;

[0026] Figure 4 This is a schematic diagram of the feeding device for a coagulation analyzer according to this application. Figure 3 . Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0028] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0029] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, soldering, snap-fitting, or embedding to suitably replace it.

[0030] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0031] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0032] A feeding device for a coagulation analyzer, comprising:

[0033] The mounting cavity 1 is set inside the coagulation analyzer 1-1. The top of the cavity is equipped with a reagent dispensing head 2 and a dust cover 3. The dust cover 3 is connected to the top of the mounting cavity 1 through a spring assembly 4 and surrounds the reagent dispensing head 2. The dust cover 3 has a through hole 31.

[0034] The test tube rack 5 is set inside the mounting cavity 1 and below the dust cover 3, and is used to hold test tubes containing plasma to be tested;

[0035] The lifting mechanism 6 is connected to the test tube rack 5 and is used to drive the test tube rack 5 to move in the vertical direction;

[0036] The lifting block 7 is fixed to the upper surface of the test tube rack 5 and moves synchronously with the test tube rack 5;

[0037] The lever amplification mechanism includes a lever arm and a fulcrum shaft 82. The first end 81a of the lever arm is rotatably connected to the fulcrum shaft 82. The fulcrum shaft 82 is fixed to the side wall of the mounting cavity 1. The second end 81b of the lever arm extends to the bottom of the dust cover 3.

[0038] When the lifting mechanism 6 drives the test tube rack 5 to rise, the lifting block 7 contacts and pushes the second end 81b of the lever arm to move upward. The lever arm rotates around the fulcrum axis 82, causing the first end 81a to move downward and abut against the inner wall of the mounting cavity 1. At the same time, the second end 81b lifts the dust cover 3, overcoming the pre-tightening force of the spring assembly 4 so that the outlet end of the reagent dispensing head 2 passes through the through hole 31.

[0039] Furthermore, the upper surface of the lifting block 7 is provided with a limiting groove 71 that is adapted to the outer periphery of the second end 81b of the lever arm. The cross section of the limiting groove 71 is semi-circular arc-shaped, which is used to limit the lateral displacement of the second end 81b during the lifting process.

[0040] Furthermore, an installation box 9 is fixed on the side wall of the installation cavity 1. An movable groove 91 is provided inside the installation box 9. The fulcrum shaft 82 is laterally fixed between the two side walls of the movable groove 91. The first end 81a of the lever arm is located inside the movable groove 91 and rotates around the fulcrum shaft 82. The second end 81b of the lever arm extends outside the movable groove 91 and cooperates with the dust cover 3.

[0041] Furthermore, the lifting mechanism 6 includes a fixed base 61 for fixing the test tube rack 5, a scissor lift platform 62 hinged to the fixed base 61, and an electric push rod 63 hinged to the middle of the connecting rod of the scissor lift platform 62.

[0042] Furthermore, it also includes a dispensing rack 10 fixed to the top of the mounting cavity 1, and the reagent dispensing head 2 is detachably mounted on the dispensing rack 10.

[0043] Furthermore, the spring assembly 4 includes a connecting rod 41 vertically fixed to the distribution frame 10 and a compression spring 42 sleeved on the connecting rod 41. The upper end of the compression spring 42 is fixed to the distribution frame 10, and the lower end is connected to the dust cover 3. The dust cover 3 is provided with a guide hole 310 that slides with the connecting rod 41.

[0044] The working principle of this utility model is as follows:

[0045] Laboratory staff place the test tubes containing the plasma to be tested in the designated position on the test tube rack 5. At this time, the test tube rack 5 is in the initial low position within the mounting cavity 1, and the dust cover 3 is in a state of surrounding the reagent dispensing head 2 under the action of the spring assembly 4, so as to keep the reagent dispensing head 2 in a dust-free and clean environment as much as possible.

[0046] As the testing process begins, the electric push rod 63 of the lifting mechanism 6 starts working. The push rod gradually extends, causing the scissor lift platform 62 to rise slowly and smoothly. Since the fixed base 61 is connected to the test tube rack 5, the test tube rack also rises steadily.

[0047] As the test tube rack 5 rises, the lifting block 7 fixed to its upper surface also moves upwards. When the lifting block 7 rises to a certain height, its upper surface contacts the second end 81b of the lever arm. The upper surface of the lifting block 7 is provided with a limiting groove 71, the semi-circular cross-section of which is adapted to the outer periphery of the second end 81b of the lever arm. This design ensures that during the lifting process, the second end 81b of the lever arm always lifts upwards along the limiting groove 71, avoiding lateral swaying and ensuring the accuracy of the entire device's operation.

[0048] As the test tube rack 5 continues to rise, the lifting block 7 applies an upward thrust to the second end 81b of the lever arm. The lever arm begins to rotate around the fulcrum shaft 82. The fulcrum shaft 82 is laterally fixed between the two side walls of the movable groove 91 of the mounting box 9, ensuring the stability of the lever arm's rotation. The first end 81a of the lever arm rotates downward under the action of the lever principle and gradually abuts against the inner wall of the movable groove 91. This downward rotation amplifies the force, allowing the second end 81b of the lever arm to lift the dust cover 3 with greater force.

[0049] During the process of the dust cover 3 being lifted, the compression spring 42 of the spring assembly 4 is compressed. At the same time, the guide hole 310 on the dust cover 3 slides smoothly along the connecting rod 41 of the spring assembly 4, ensuring that the lifting action of the dust cover 3 is linear and stable.

[0050] As the dust cover 3 is pushed to the appropriate position, the outlet end of the reagent dispensing head 2 passes through the through hole 31 on the dust cover 3. At this time, the test tube rack 5 stops rising, and the outlet end of the reagent dispensing head 2 is directly facing the plasma to be tested in the test tube.

[0051] After sample dispensing is completed, the electric push rod 63 of the lifting mechanism 6 begins to retract, driving the scissor lift platform 62 to descend, and the test tube rack 5 also smoothly returns to its initial low position. The lifting block 7 separates from the second end 81b of the lever arm, and the lever arm, having lost its lifting force, rotates back to its initial position around the fulcrum axis 82 under the elastic restoring force of the spring assembly 4. The dust cover 3 then re-encloses the reagent dispensing head 2, restoring its protective function.

[0052] This invention amplifies the lifting force of the lifting block 7 through a lever amplification mechanism, enabling a smaller lifting force to overcome the preload of the spring assembly 4 on the dust cover 3. Compared to directly lifting the dust cover, the lever amplification mechanism significantly reduces the driving force required by the electric push rod 63, thereby reducing the system load. The rotational movement of the lever arm is smoother than direct pushing, effectively reducing impact vibration and avoiding interference with the reagent dispensing head 2 and sample tubes.

[0053] In the above technical solution, the reagent dispensing head 2 is a key component of the coagulation analyzer. It is usually installed on top of the mounting cavity 1 and is fixed to the dispensing rack 10 in a detachable manner. Its main function is to accurately dispense specific reagents into the plasma sample to be tested in the test tube, thereby initiating the coagulation reaction or related biochemical reactions. The specific reagents can be one of the following: coagulation factor activating reagents, anticoagulant neutralizing reagents, or detection auxiliary reagents.

[0054] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A feeding device for a coagulation analyzer, characterized in that, include: The mounting cavity (1) is set inside the coagulation analyzer (1-1), and a reagent dispensing head (2) and a dust cover (3) are provided on its top. The dust cover (3) is connected to the top of the mounting cavity (1) through a spring assembly (4) and surrounds the reagent dispensing head (2). A through hole (31) is provided on the dust cover (3). The test tube rack (5) is set inside the mounting cavity (1) and below the dust cover (3) to support test tubes containing plasma to be tested; The lifting mechanism (6) is connected to the test tube rack (5) and is used to drive the test tube rack (5) to move in the vertical direction; The lifting block (7) is fixed to the upper surface of the test tube rack (5) and moves synchronously with the test tube rack (5); The lever amplification mechanism includes a lever arm and a fulcrum shaft (82). The first end (81a) of the lever arm is rotatably connected to the fulcrum shaft (82), the fulcrum shaft (82) is fixed to the side wall of the mounting cavity (1), and the second end (81b) of the lever arm extends to the bottom of the dust cover (3). When the lifting mechanism (6) drives the test tube rack (5) to rise, the lifting block (7) contacts and pushes the second end (81b) of the lever arm to move upward. The lever arm rotates around the fulcrum axis (82), causing the first end (81a) to move downward and abut against the inner wall of the mounting cavity (1). At the same time, the second end (81b) lifts the dust cover (3), overcoming the pre-tightening force of the spring assembly (4) so ​​that the outlet end of the reagent dispensing head (2) passes through the through hole (31).

2. The feeding device for a coagulation analyzer according to claim 1, characterized in that, The upper surface of the lifting block (7) is provided with a limiting groove (71) that is adapted to the outer periphery of the second end (81b) of the lever arm. The cross section of the limiting groove (71) is semi-circular and is used to limit the lateral displacement of the second end (81b) during the lifting process.

3. The feeding device for a coagulation analyzer according to claim 1, characterized in that, An installation box (9) is fixed on the side wall of the installation cavity (1). An movable groove (91) is provided in the installation box (9). The fulcrum shaft (82) is fixed laterally between the two side walls of the movable groove (91). The first end (81a) of the lever arm is located in the movable groove (91) and rotates around the fulcrum shaft (82). The second end (81b) of the lever arm extends to the outside of the movable groove (91) and cooperates with the dust cover (3).

4. The feeding device for a coagulation analyzer according to claim 1, characterized in that, The lifting mechanism (6) includes a fixed base (61) for fixing the test tube rack (5), a scissor lift platform (62) hinged to the fixed base (61), and an electric push rod (63) hinged to the middle of the connecting rod of the scissor lift platform (62).

5. The feeding device for a coagulation analyzer according to claim 1, characterized in that, It also includes a dispensing rack (10) fixed to the top of the mounting cavity (1), and the reagent dispensing head (2) is detachably mounted on the dispensing rack (10).

6. The feeding device for a coagulation analyzer according to claim 1, characterized in that, The spring assembly (4) includes a connecting rod (41) vertically fixed to the distribution frame (10) and a compression spring (42) sleeved on the connecting rod (41). The upper end of the compression spring (42) is fixed to the distribution frame (10), and the lower end is connected to a dust cover (3). The dust cover (3) is provided with a guide hole (310) that slides with the connecting rod (41).

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