Sampling mechanism and analyzer

Abstract

The utility model discloses a sampling mechanism and an analyzer, and relates to the technical field of medical instruments. The sampling mechanism comprises a bracket, a cup base and a mounting base; a stopping plate is connected to the bracket, a needle passing hole is formed in the stopping plate, and the maximum diameter of the needle passing hole is smaller than the diameter of the opening of the reaction cup; the cup base is provided with a containing groove used for containing a reaction cup, the cup base is configured to be spaced from the stopping plate, a groove opening of the containing groove faces the stopping plate and is opposite to the needle passing hole, and the distance H1 between the end face of the end, close to the groove opening of the containing groove, of the cup base and the stopping plate is smaller than the depth H2 of the containing groove; the mounting seat is slidably mounted on the support, located on the side, away from the cup seat, of the stopping plate and movably arranged relative to the stopping plate, a liquid suction needle is mounted on the mounting seat, and the liquid suction needle is configured to move relative to the stopping plate under driving of the mounting seat so as to slidably penetrate through the needle passing hole to be inserted into the reaction cup in the containing groove. According to the sampling mechanism provided by the invention, the problem that the reaction cup is lifted up by the liquid suction needle to cause overturning of the reaction cup can be prevented.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to sampling mechanisms and analyzers. Background Technology

[0002] In the medical diagnosis process, analyzers are usually used to test and analyze the patient's blood and other bodily fluids in order to confirm the specific cause of the disease.

[0003] In related technologies, when the analyzer uses a suction needle to take liquid, it is easy to lift the reaction cup, causing the reaction cup to tip over and resulting in contamination. Utility Model Content

[0004] This application provides a sampling mechanism and analyzer to prevent the reaction cup from tipping over due to being lifted by the aspiration needle.

[0005] This application provides a sampling mechanism, including:

[0006] A support is provided, on which a stop plate is connected. The stop plate has a pinhole, the maximum diameter of which is smaller than the diameter of the opening of the reaction cup.

[0007] A cup holder has a receiving groove for placing the reaction cup, the cup holder is configured to be spaced apart from the stop plate, and the opening of the receiving groove faces the stop plate and is opposite to the pinhole, the distance H1 between the end face of the cup holder near the opening of the receiving groove and the stop plate is less than the depth H2 of the receiving groove;

[0008] The mounting base is slidably mounted on the bracket and located on the side of the stop plate away from the cup holder, and is movable relative to the stop plate. A suction needle is mounted on the mounting base and is configured to move relative to the stop plate under the drive of the mounting base, so as to slide through the needle hole and insert into the reaction cup in the receiving groove.

[0009] In some possible implementations, the stop plate includes a stop portion and an assembly portion connected together, the assembly portion being detachably connected to the bracket, the stop portion being connected to the side of the assembly portion away from the bracket, the cup holder being configured to be spaced apart from the stop portion, and the distance H1 between the end face of the cup holder near the opening of the receiving groove and the stop portion being less than the depth H2 of the receiving groove, and the pinhole being formed on the stop portion.

[0010] In some possible implementations, the bracket includes a connected base plate and a first side plate, the first side plate being located on the side of the base plate opposite to the cup holder and cooperating with the base plate to form an assembly space, the base plate having a clearance hole connected to the assembly space, and the first side plate having a plug hole communicating with the clearance hole.

[0011] The assembly part includes an assembly body and an elastic arm. The assembly body is connected to the stop part. One end of the elastic arm is connected to the side of the assembly body away from the stop part, and the other end is a movable end and is movably disposed relative to the assembly body.

[0012] The movable end of the elastic arm passes through the clearance hole and is inserted into the insertion hole, abutting against the wall of the insertion hole. The assembly body abuts against the side of the base plate facing the assembly space.

[0013] In some possible implementations, the movable end of the elastic arm is provided with a buckle, the movable end of the elastic arm passes through the clearance hole and the insertion hole in sequence, and the buckle is engaged with the side of the first side plate away from the assembly space.

[0014] In some possible implementations, one of the first side plate and the assembly body is provided with a guide post, and the other is provided with a guide hole that matches the guide post, the guide post being inserted into the guide hole.

[0015] In some possible implementations, the assembly body is further provided with a limiting groove, the opening of the limiting groove is away from the stop portion, and the limiting groove is located on the side of the assembly body facing the base plate, with the end of the base plate away from the first side plate inserted into the limiting groove.

[0016] In some possible implementations, the support is also provided with a slide rail, and the mounting base is slidably mounted on the slide rail by a slider, so as to drive the aspiration needle to move relative to the stop plate and pass through the needle hole and insert into the reaction cup in the receiving groove;

[0017] The sampling mechanism also includes a driving mechanism that drives the slider to slide.

[0018] In some possible implementations, the drive mechanism includes a drive member and a transmission assembly. The transmission assembly includes a drive wheel, a driven wheel, and a transmission belt. The drive wheel and the driven wheel are spaced apart along the extension direction of the slide rail and are rotatably mounted on the bracket. The drive wheel is drively connected to the drive member. The transmission belt is sleeved on the drive wheel and the driven wheel, and the slider is connected to the transmission belt.

[0019] In some possible implementations, there are at least two aspiration needles, and at least two aspiration needles are spaced apart and mounted on the side of the mounting base facing the stop plate;

[0020] The mounting base is also configured to be movable relative to the stop plate so that each of the aspiration needles is independently inserted through the needle hole into the reaction cup within the receiving groove.

[0021] In addition, this application also provides an analyzer including the sampling mechanism described in the above embodiments.

[0022] In the sampling mechanism provided in this application, the maximum diameter of the needle hole is smaller than the diameter of the opening of the reaction cup, so that the aspiration needle can pass through the needle hole, while the reaction cup cannot pass through the needle hole. A stop plate is provided on the moving path of the reaction cup. The distance H1 between the stop plate and the end face of the cup seat near the opening of the receiving groove is smaller than the depth H2 of the receiving groove. This ensures that when the aspiration needle is taken out of the reaction cup, if the aspiration needle lifts the reaction cup, the reaction cup cannot be completely lifted out of the cup seat due to the obstruction of the stop plate. This avoids the reaction cup being lifted and tipping over, causing contamination and test interruption. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A front view schematic diagram of the sampling mechanism in some embodiments is shown;

[0025] Figure 2 Schematic diagrams of the sampling mechanism in some embodiments are shown;

[0026] Figure 3 Dimensional diagrams of the sampling mechanism in some embodiments are shown;

[0027] Figure 4 Schematic diagrams of the stop plate in some embodiments are shown;

[0028] Figure 5 A side view of the stop plate in some embodiments is shown;

[0029] Figure 6 A partial structural schematic diagram of the bracket is shown in some embodiments;

[0030] Figure 7A cross-sectional structural schematic diagram of the connection between the bracket and the stop plate is shown in some embodiments;

[0031] Figure 8 A top view of the connection between the bracket and the stop plate is shown in some embodiments.

[0032] Explanation of key component symbols:

[0033] 1000 - Sampling facility;

[0034] 100 - Cup holder; 101 - Receiving slot;

[0035] 200-Stop plate; 201-Pin hole; 210-Assembly part; 211-Assembly body; 2111-Guide hole; 212-Elastic arm; 213-Snap; 2131-Bevel; 214-Limiting groove; 220-Stop part;

[0036] 300 - Mounting bracket; 310 - Mounting position;

[0037] 400 - Bracket; 401 - Assembly space; 410 - Base plate; 411 - Clearance hole; 420 - First side plate; 421 - Insertion hole; 430 - Second side plate; 440 - Guide post;

[0038] 500-Drive mechanism; 510-Driver component; 520-Transmission assembly; 521-Driving wheel; 522-Driven wheel; 523-Transmission belt; 531-Slide rail; 532-Slider;

[0039] 600-Aspiration needle;

[0040] 2000-reaction cup;

[0041] M - First direction; N - Second direction. Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of these 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. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] During testing with a fully automated analyzer, the aspiration needle 600 may lift the reaction cup 2000 while drawing the reaction liquid, causing the cup to tip over, resulting in contamination or test interruption. Current solutions to prevent this are mainly: 1. Multiple aspirations of waste liquid where the tip of the aspiration needle 600 does not contact the bottom of the reaction cup 2000: Multiple aspirations reduce the testing speed per unit time compared to a single aspiration, but do not cause the cup-lifting problem; 2. Single aspiration of waste liquid where the tip of the aspiration needle 600 contacts the bottom of the reaction cup 2000: This increases the testing speed but still presents the cup-lifting problem, and current solutions for preventing cup-lifting at the testing station are quite complex.

[0048] like Figure 1 and Figure 2 As shown, an embodiment provides a sampling mechanism 1000, which can be applied in an analyzer to achieve the aspiration of the reaction liquid and prevent the occurrence of cup-related problems. Specifically, the sampling mechanism 1000 includes a support 400, a cup holder 100, and a mounting base 300. A stop plate 200 is connected to the support 400. The stop plate 200 has a pinhole 201, the maximum diameter of which is smaller than the diameter of the opening of the reaction cup 2000. The cup holder 100 has a receiving groove 101 for placing the reaction cup 2000. The cup holder 100 is configured to be spaced apart from the stop plate 200, and the opening of the receiving groove 101 faces the stop plate 200 and is opposite to the pinhole 201. The distance H1 between the end face of the cup holder 100 near the opening of the receiving groove 101 and the stop plate 200 is smaller than the depth H2 of the receiving groove 101. The mounting base 300 is slidably mounted on the bracket 400 and located on the side of the stop plate 200 away from the cup holder 100, and is movable relative to the stop plate 200. A suction needle 600 is mounted on the mounting base 300. The suction needle 600 is configured to move relative to the stop plate 200 under the action of the mounting base 300, so as to slide through the needle hole 201 and be inserted into the reaction cup 2000 in the receiving groove 101.

[0049] When using the sampling mechanism 1000, the reaction cup 2000 containing the reaction solution is placed in the cup holder 100. During liquid collection, the aspiration needle 600, driven by the mounting base 300, moves towards the stop plate 200, passes through the needle hole 201, and penetrates deep into the reaction cup 2000 to aspirate the liquid. After the reaction solution is completely aspirated, the aspiration needle 600, driven by the mounting base 300, detaches from the reaction cup 2000 and retracts to the side of the stop plate 200 away from the cup holder 100.

[0050] In the aforementioned sampling mechanism 1000, the maximum diameter of the through-hole 201 is smaller than the diameter of the opening of the reaction cup 2000, allowing the aspiration needle 600 to pass through the through-hole 201 while preventing the reaction cup 2000 from passing through it. A stop plate 200 is provided on the moving path of the reaction cup 2000. The distance H1 between the stop plate 200 and the end face of the cup holder 100 near the opening of the receiving groove 101 is smaller than the depth H2 of the receiving groove 101, ensuring that when the aspiration needle 600 passes through the through-hole 201, the maximum diameter of the through-hole 201 is smaller than the diameter of the opening of the reaction cup 2000. When the reaction cup 2000 is removed from the reaction cup 2000, if the aspiration needle 600 lifts the reaction cup 2000, after the reaction cup 2000 contacts the stop plate 200, it can fall back into the receiving groove 101 of the cup holder 100 under the blocking action of the stop plate 200 and separate from the aspiration needle 600. The reaction cup 2000 cannot be completely carried out of the cup holder 100 under the blocking action of the stop plate 200, thereby avoiding the problem of the reaction cup 2000 being lifted up and causing it to tip over, resulting in contamination and test interruption.

[0051] During the aspiration process, the aspiration needle 600 contacts the bottom of the reaction cup 2000 to aspirate a sufficient amount of reaction liquid. This means that the required volume of reaction liquid can be obtained with a single aspiration action, eliminating the need for repeated aspiration operations, thus improving the efficiency of testing and analysis and saving time.

[0052] The aforementioned sampling mechanism 1000 can not only perform one-time liquid aspiration, improving the testing speed, but also avoid the problems of contamination and test interruption caused by the reaction cup 2000 being lifted and tipping over. In addition, the structure design is simple.

[0053] In some embodiments, when the needle hole 201 is an elliptical or polygonal hole, the maximum diameter of the needle hole 201 can refer to the diameter of the circumscribed circle of the needle hole 201. Simultaneously, the minimum diameter of the needle hole 201 is greater than the outer diameter of the suction needle 600 to ensure smooth passage of the suction needle 600. When the needle hole 201 is an elliptical or polygonal hole, the minimum diameter of the needle hole 201 can refer to the diameter of the inscribed circle of the needle hole 201.

[0054] In some embodiments, the sampling mechanism 1000 has a first direction M and a second direction N that are perpendicular to each other. The first direction M is parallel to the direction of gravity. The mounting base 300 is movable relative to the stop plate 200 along the first direction M. The aspiration needle 600 is configured to move relative to the stop plate 200 along the first direction M under the action of the mounting base 300, so as to slidably pass through the needle hole 201 and be inserted into the reaction cup 2000 within the receiving groove 101. The aspiration needle 600 is fixedly mounted at the mounting position 310 of the mounting base 300 and extends toward the stop plate 200.

[0055] In some embodiments, the lifting height of the aspiration needle 600 is greater than the sum of the depth H2 of the receiving groove 101, the distance H1 between the stop plate 200 and the end face of the cup holder 100 near the opening of the receiving groove 101, and the thickness of the stop plate 200. This configuration avoids the problem of the aspiration needle 600 being damaged during movement.

[0056] In some embodiments, when the reaction cup 2000 is fully placed on the cup holder 100, the distance H1 between the stop plate 200 and the end face of the cup holder 100 near the opening of the receiving groove 101 is greater than the distance H3 between the end face of the opening of the reaction cup 2000 and the end face of the cup holder 100 near the opening of the receiving groove 101, which can prevent interference between the stop plate 200 and the reaction cup 2000.

[0057] In some embodiments, the cup holder 100 is a magnetic separation cup holder. The reaction cup 2000 is housed within the cup holder 100, enabling magnetic separation of the reaction liquid within the reaction cup 2000.

[0058] like Figures 2 to 4 As shown, in some embodiments, the stop plate 200 includes a connected stop portion 220 and an assembly portion 210. Both the stop portion 220 and the assembly portion 210 have a plate-like structure. In the illustrated embodiment, the stop portion 220 and the assembly portion 210 are integrally formed and connected. It should be noted that the stop portion 220 and the assembly portion 210 are not limited to being integrally formed; they can also be connected by other methods, such as bonding or heat fusion.

[0059] In some embodiments, the assembly part 210 is detachably connected to the bracket 400, thereby enabling a detachable connection between the stop plate 200 and the bracket 400, facilitating the disassembly and cleaning of the stop plate 200. Specifically, the detachable connection between the assembly part 210 and the bracket 400 is a snap-fit ​​connection. It should be noted that the detachable connection between the assembly part 210 and the bracket 400 is not limited to a snap-fit ​​connection; other detachable connection methods may also be used, such as screw and threaded hole connections. In other embodiments, the stop plate 200 may also be non-detachably connected to the bracket 400 by means of bonding or integral molding.

[0060] Furthermore, the stop portion 220 is connected to the side of the assembly portion 210 away from the bracket 400, the cup holder 100 is configured to be spaced apart from the stop portion 220, and the distance H1 between the end face of the cup holder 100 near the opening of the receiving groove 101 and the stop portion 220 is less than the depth H2 of the receiving groove 101, and the pinhole 201 is formed on the stop portion 220.

[0061] In some embodiments, the distance H1 between the stop portion 220 and the end of the cup holder 100 where the receiving groove 101 is provided is greater than the height of the reaction cup 2000 protruding relative to the cup holder 100 (i.e., the distance H3 between the end face of the opening of the reaction cup 2000 and the end face of the cup holder 100 near the end of the receiving groove 101), which can prevent interference between the stop plate 200 and the reaction cup 2000.

[0062] like Figures 4 to 8 As shown, in some embodiments, the bracket 400 includes a connected base plate 410 and a first side plate 420. The first side plate 420 is located on the side of the base plate 410 away from the cup holder 100 and cooperates with the base plate 410 to form an assembly space 401. The base plate 410 has a clearance hole 411 connected to the assembly space 401, and the first side plate 420 has a insertion hole 421 communicating with the clearance hole 411.

[0063] The assembly part 210 includes an assembly body 211 and an elastic arm 212. The assembly body 211 is connected to the stop part 220. One end of the elastic arm 212 is connected to the side of the assembly body 211 away from the stop part 220, and the other end is a movable end that is movably disposed relative to the assembly body 211. The movable end of the elastic arm 212 passes through the clearance hole 411 and is inserted into the insertion hole 421, abutting against the wall of the insertion hole 421. The assembly body 211 abuts against the side of the base plate 410 facing the assembly space 401.

[0064] In some embodiments, the bracket 400 further includes a second side plate 430. In the illustrated example, along the first direction M, both the first side plate 420 and the second side plate 430 are disposed on the side of the base plate 410 opposite to the cup holder 100, and both the first side plate 420 and the second side plate 430 are parallel to the first direction M. In the second direction N, the first side plate 420 is connected to the side of the base plate 410 away from the cup holder 100. The second side plate 430 is connected to another adjacent side of the cup holder 100, and the second side plate 430 is perpendicular to both the base plate 410 and the first side plate 420. Accordingly, the first side plate 420, the second side plate 430, and the base plate 410 cooperate to form an assembly space 401. Along the second direction N, the side of the assembly space 401 closest to the cup holder 100 is an open side.

[0065] In a specific example, the assembly body 211 and the elastic arm 212 are integrally formed. Along the second direction N, both the assembly part 210 and the elastic arm 212 are located on the side of the stop part 220 facing away from the cup holder 100, and the assembly part 210 is connected to the side of the stop part 220 facing the bracket 400. In this embodiment, the assembly body 211 has a U-shaped plate structure, and the opening side of the U-shaped groove of the assembly body 211 is located away from the stop part 220. The elastic arm 212 is inserted into the U-shaped groove of the assembly body 211, with one end of the elastic arm 212 near the stop part 220 connected to the bottom of the U-shaped groove of the assembly body 211; that is, one end of the elastic arm 212 is connected to the end of the assembly body 211 near the stop part 220. Accordingly, the end of the elastic arm 212 connected to the assembly body 211 can serve as a fixed end. One end of the elastic arm 212 away from the stop portion 220 protrudes relative to the other end of the assembly body 211 away from the stop portion 220, and is movably disposed relative to the assembly body 211. That is, the end of the elastic arm 212 away from the stop portion 220 can serve as the movable end.

[0066] In some embodiments, the movable end of the elastic arm 212 is provided with a buckle 213. The buckle 213 and the elastic arm 212 are integrally formed. In some embodiments, along the first direction M, the buckle 213 is disposed on the side of the elastic arm 212 away from the cup holder 100, that is, the buckle 213 protrudes from the upper surface of the elastic arm 212.

[0067] In some embodiments, the bottom plate 410 has a clearance hole 411 connected to the assembly space 401 at one end near the first side plate 420. The first side plate 420 has a insertion hole 421 at one end near the bottom plate 410, and the insertion hole 421 communicates with the clearance hole 411. In this embodiment, when the stop plate 200 is installed on the bracket 400, the assembly body 211 is fitted against the side of the bottom plate 410 facing the assembly space 401. The movable end of the elastic arm 212 passes through the clearance hole 411 and is inserted into the insertion hole 421, and the movable end of the elastic arm 212 abuts against the wall of the insertion hole 421. The buckle 213 is located on the side of the elastic arm 212 away from the bottom plate 410, and the buckle 213 is engaged with the side of the first side plate 420 away from the assembly space 401. Thus, the assembly part 210 and the bracket 400 can be engaged.

[0068] In some embodiments, the snap fastener 213 has a slope 2131 on the side opposite to the elastic arm 212. Along the second direction N, the slope 2131 gradually slopes from the end near the stop 220 to the end away from the stop 220 towards the elastic arm 212.

[0069] When the stop plate 200 is installed on the bracket 400, the assembly part 210 is placed on the side of the base plate 410 facing the assembly space 401, and the end of the elastic arm 212 with the buckle 213 is aligned with the insertion hole 421. Then, the stop plate 200 is pushed along the second direction N, so that the end of the elastic arm 212 with the buckle 213 is gradually inserted into the insertion hole 421. During the movement of the stop plate 200, the first side plate 420 gradually presses the inclined surface 2131 of the buckle 213, and drives the end of the elastic arm 212 with the buckle 213 to elastically deform away from the assembly space 401, so that the buckle 213 can pass smoothly through the insertion hole 421. When the latch 213 passes through the insertion hole 421 and is located on the side of the first side plate 420 opposite to the assembly space 401, the elastic arm 212 can be reset under the action of elastic potential energy, and drive the latch 213 to engage with the side of the first side plate 420 opposite to the assembly space 401. It can be understood that the clearance hole 411 on the base plate 410 can provide clearance space for the end of the elastic arm 212 near the latch 213.

[0070] When it is necessary to remove the stop plate 200, press the buckle 213 in the first direction M toward the base plate 410. The elastic arm 212 undergoes elastic deformation under the pressing action, and drives the buckle 213 to disengage from the first side plate 420. After the buckle 213 disengages from the first side plate 420, push the buckle 213 and the elastic arm 212 in the second direction N so that the buckle 213 retracts relative to the insertion hole 421 to the side of the first side plate 420 near the assembly space 401, thereby realizing the disassembly of the stop plate 200 from the bracket 400.

[0071] In some embodiments, two guide posts 440 protrude from the side of the first side plate 420 facing the assembly space 401, and the two guide posts 440 are respectively disposed on both sides of the insertion hole 421. In the embodiment, the guide posts 440 are parallel to the second direction N. Two guide holes 2111 are opened on the side of the assembly body 211 away from the stop part 220, and the two guide holes 2111 are respectively disposed on both sides of the elastic arm 212, and the two guide holes 2111 correspond one-to-one with the two guide posts 440. The two guide posts 440 are inserted into the two guide holes 2111 one-to-one. Thus, when the stop plate 200 is installed on the bracket 400, the guide posts 440 can cooperate with the guide holes 2111 to guide the stop plate 200, ensuring that the end of the elastic arm 212 with the buckle 213 is smoothly inserted into the insertion hole 421.

[0072] In other embodiments, the guide post 440 and the guide hole 2111 may also be configured as one, three, or four groups or any other arbitrary number of groups as needed.

[0073] In other embodiments, the guide post 440 protrudes from the side of the assembly body 211 opposite to the stop portion 220. The guide hole 2111 is formed on the side of the first side plate 420 facing the assembly space 401 and communicates with the assembly space 401.

[0074] like Figure 4 and Figure 7 As shown, in some embodiments, a limiting groove 214 is also formed at one end of the assembly body 211 near the stop portion 220. The limiting groove 214 is located on the side of the assembly body 211 facing the base plate 410, and the opening of the limiting groove 214 is disposed away from the stop portion 220. In the embodiment, the end of the base plate 410 away from the first side plate 420 is inserted into the limiting groove 214. Thus, the connection stability between the stop plate 200 and the bracket 400 can be improved, and the possibility of the stop plate 200 arbitrarily detaching from the bracket 400 can be reduced.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the sampling mechanism 1000 further includes a drive mechanism 500 and a slide rail 531. The slide rail 531 is fixedly mounted along a first direction M on the side of the second side plate 430 facing the assembly space 401. The mounting base 300 is slidably mounted on the slide rail 531 via a slider 532. The drive mechanism 500 is connected to the slider 532 and is used to drive the slider 532 to slide along the first slide rail 531, thereby moving the mounting base 300.

[0076] In some embodiments, the drive mechanism 500 includes a drive member 510 and a transmission assembly 520. The drive member 510 is fixedly mounted on the bracket 400. The transmission assembly 520 is drively connected between the drive member 510 and the slider 532. Thus, the drive member 510 can drive the transmission assembly 520 to move the slider 532 along the slide rail 531, thereby causing the mounting base 300 to move in the first direction M to approach or move away from the stop plate 200.

[0077] In some embodiments, the drive member 510 may be a motor. The drive member 510 is fixedly mounted on the side of the first side plate 420 facing away from the assembly space 401. The transmission assembly 520 includes a drive wheel 521, a driven wheel 522, and a transmission belt 523. The drive wheel 521 and the driven wheel 522 are both rotatably mounted on the first side plate 420 and are located on the side of the first side plate 420 facing the assembly space 401. The drive wheel 521 and the driven wheel 522 are distributed along a first direction M. In addition, the drive wheel 521 is located near the end of the drive member 510. In this embodiment, the drive wheel 521 is drive-connected to the output shaft of the drive member 510. The transmission belt 523 is sleeved on the drive wheel 521 and the driven wheel 522, and the slider 532 is fixedly connected to the transmission belt 523. When the drive member 510 drives the drive wheel 521 to rotate, it can drive the transmission belt 523 to run, and then the transmission belt 523 drives the slider 532 to move along the slide rail 531.

[0078] In other embodiments, the drive unit 510 may be a motor, and the output shaft of the drive unit 510 is parallel to the first direction M. The transmission assembly 520 includes a lead screw and a lead screw nut, the lead screw extending along the first direction M and rotatably mounted on the side of the first side plate 420 or the second side plate 430 facing the assembly space 401. The lead screw nut is screwed onto the lead screw and fixedly connected to the slider 532.

[0079] In other embodiments, the drive unit 510 may also be a cylinder, hydraulic cylinder, or electric push rod. The output shaft of the drive unit 510 is parallel to the first direction M, and the output shaft of the drive unit 510 can be connected to the slider 532 through a transmission rod or other structure.

[0080] like Figure 1 and Figure 2 As shown, in some embodiments, the support 400 is movably disposed relative to the cup holder 100 along the second direction N. Thus, the support 400 can drive structures such as the stop plate 200 and the mounting base 300 to move along the second direction N, causing the stop plate 200 to be misaligned with the cup holder 100. This facilitates the smooth placement of the reaction cup 2000 into the cup holder 100 by structures such as robotic arms, and allows for the smooth grasping of the reaction cup 2000 from the cup holder 100, preventing the stop plate 200 from interfering with the movements of structures such as robotic arms.

[0081] In some embodiments, the stop portion 220 has two needle holes 201, which are arranged sequentially along the second direction N. Correspondingly, the mounting base 300 has two mounting positions 310 on the side facing the stop plate 200, and the two mounting positions 310 correspond one-to-one with the two needle holes 201. Both mounting positions 310 are equipped with suction needles 600. In some embodiments, one suction needle 600 is used as an output, and the other suction needle 600 is used as an output. In the embodiment, the bracket 400 can drive the mounting base 300 to move in the second direction N, thereby driving the two suction needles 600 to move along the second direction N, so that each suction needle 600 can be independently inserted into the reaction cup 2000 in the receiving groove 101 through the corresponding needle hole 201.

[0082] In other embodiments, both aspiration needles 600 are used as outputs to draw reaction liquid from the reaction vessel.

[0083] In other embodiments, the stop portion 220 has one or three, or any other number of needle holes 201. When the stop portion 220 has multiple needle holes 201, the multiple needle holes 201 are arranged sequentially along the second direction N. The mounting base 300 has mounting positions 310 on the side facing the stop plate 200, with the number of mounting positions 310 corresponding to the number of needle holes 201. Each mounting position 310 can be used to mount a suction needle 600.

[0084] In this embodiment, the bracket 400 is connected to a drive assembly (not shown), which is used to drive the bracket 400 to move along the second direction N. The specific structure of the drive assembly is similar to that of the drive mechanism 500 used to drive the mounting base 300 to move along the first direction M, and will not be described in detail here.

[0085] In summary, the sampling mechanism 1000 provided in this application embodiment may have the following advantages:

[0086] (i) By setting the stop plate 200, the reaction cup 2000 in the cup holder 100 can be effectively prevented from being lifted by the liquid aspiration needle 600, and the probability of the reaction cup 2000 tipping over and causing contamination can also be reduced.

[0087] (ii) The bracket 400 can move relative to the cup holder 100 along the second direction N, thereby avoiding interference of the stop plate 200 with the cup-grabbing action of the robotic arm and other structures.

[0088] (III) The stop plate 200 is detachably connected to the bracket 400 by a snap-fit ​​method, which makes it easy to disassemble and clean the stop plate 200 without the need for tools, reducing the difficulty of disassembling the stop plate 200 and improving the disassembly efficiency.

[0089] The embodiment also provides an analyzer, including the sampling mechanism 1000 provided in the embodiment.

[0090] Among them, the analyzer can be a luminescence analyzer (e.g., an electrochemiluminescence analyzer), a glycated hemoglobin analyzer, a specific protein analyzer, a biochemical analyzer, or any other analyzer that may have cup-related issues.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A sampling mechanism, characterized in that, include: A support is provided, on which a stop plate is connected. The stop plate has a pinhole, the maximum diameter of which is smaller than the diameter of the opening of the reaction cup. A cup holder has a receiving groove for placing the reaction cup, the cup holder is configured to be spaced apart from the stop plate, and the opening of the receiving groove faces the stop plate and is opposite to the pinhole, the distance H1 between the end face of the cup holder near the opening of the receiving groove and the stop plate is less than the depth H2 of the receiving groove; The mounting base is slidably mounted on the bracket and located on the side of the stop plate away from the cup holder, and is movable relative to the stop plate. A suction needle is mounted on the mounting base and is configured to move relative to the stop plate under the drive of the mounting base, so as to slide through the needle hole and insert into the reaction cup in the receiving groove.

2. The sampling mechanism according to claim 1, characterized in that, The stop plate includes a stop portion and an assembly portion connected together. The assembly portion is detachably connected to the bracket. The stop portion is connected to the side of the assembly portion away from the bracket. The cup holder is configured to be spaced apart from the stop portion. The distance H1 between the end face of the cup holder near the opening of the receiving groove and the stop portion is less than the depth H2 of the receiving groove. The pinhole is formed on the stop portion.

3. The sampling mechanism according to claim 2, characterized in that, The bracket includes a connected base plate and a first side plate. The first side plate is located on the side of the base plate away from the cup holder and cooperates with the base plate to form an assembly space. The base plate has a clearance hole connected to the assembly space, and the first side plate has a plug hole communicating with the clearance hole. The assembly part includes an assembly body and an elastic arm. The assembly body is connected to the stop part. One end of the elastic arm is connected to the side of the assembly body away from the stop part, and the other end is a movable end and is movably disposed relative to the assembly body. The movable end of the elastic arm passes through the clearance hole and is inserted into the insertion hole, abutting against the wall of the insertion hole. The assembly body abuts against the side of the base plate facing the assembly space.

4. The sampling mechanism according to claim 3, characterized in that, The movable end of the elastic arm is provided with a buckle, and the movable end of the elastic arm passes through the clearance hole and the insertion hole in sequence, and the buckle is engaged with the side of the first side plate away from the assembly space.

5. The sampling mechanism according to claim 3, characterized in that, One of the first side plate and the assembly body is provided with a guide post, and the other is provided with a guide hole that matches the guide post, and the guide post is inserted into the guide hole.

6. The sampling mechanism according to any one of claims 3-5, characterized in that, The assembly body is also provided with a limiting groove, the opening of the limiting groove is away from the stop part, and the limiting groove is located on the side of the assembly body facing the bottom plate, and the end of the bottom plate away from the first side plate is inserted into the limiting groove.

7. The sampling mechanism according to claim 1, characterized in that, The bracket is also provided with a slide rail, and the mounting base is slidably mounted on the slide rail by a slider, so as to drive the liquid aspiration needle to move relative to the stop plate, pass through the needle hole and insert into the reaction cup in the receiving groove; The sampling mechanism also includes a driving mechanism that drives the slider to slide.

8. The sampling mechanism according to claim 7, characterized in that, The driving mechanism includes a driving component and a transmission assembly. The transmission assembly includes a driving wheel, a driven wheel, and a transmission belt. The driving wheel and the driven wheel are spaced apart along the extension direction of the slide rail and are rotatably mounted on the bracket. The driving wheel is connected to the driving component. The transmission belt is sleeved on the driving wheel and the driven wheel. The slider is connected to the transmission belt.

9. The sampling mechanism according to any one of claims 1-5 and 7-8, characterized in that, The number of aspiration needles is at least two, and at least two aspiration needles are installed at intervals on the side of the mounting base facing the stop plate; The mounting base is also configured to be movable relative to the stop plate so that each of the aspiration needles is independently inserted through the needle hole into the reaction cup within the receiving groove.

10. An analyzer, characterized in that, Includes the sampling apparatus as described in any one of claims 1 to 9.

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