Reagent device and sample analyzer

Abstract

The application discloses a reagent device and a sample analyzer. The reagent device comprises a base, an extraction mechanism, a reagent bin and a driving mechanism. The extraction mechanism comprises a fixed plate and a needle assembly arranged on the fixed plate, and the needle assembly is used for taking reagent from a reagent bottle. The reagent bin is arranged below the extraction mechanism and comprises a fixed seat connected with the base and a movable seat movably connected with the fixed seat. The movable seat is used for placing the reagent bottle. The driving mechanism comprises a driving piece, a transmission assembly and a connecting assembly connected with the transmission assembly. The driving piece is arranged on the base. The transmission assembly and the connecting assembly are movably connected with the base. One end of the connecting assembly is connected with the fixed plate, and the other end is movably connected with the movable seat. The driving piece is used for driving the transmission assembly to drive the connecting assembly to move, so as to drive the fixed plate to move close to or away from the fixed seat along a vertical direction, and drive the movable seat to move close to or away from the fixed seat along a horizontal direction. The reagent device has simple structure and small control difficulty.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a reagent device and a sample analyzer. Background Technology

[0002] As an instrument for sample analysis, a sample analyzer requires adding various reagents to the sample and mixing them to analyze the resulting liquid mixture. When extracting reagents, a drive mechanism propels a reagent needle into a reagent bottle within the reagent compartment. To change a reagent bottle, the same drive mechanism moves the reagent needle away from the bottle, and another drive mechanism pushes the compartment out of the instrument for replacement. This dual-drive system, used for both reagent extraction and bottle removal, is complex and difficult to control.

[0003] In view of the above-mentioned shortcomings, it is necessary to provide a new reagent device and sample analyzer. Summary of the Invention

[0004] The main objective of this invention is to provide a reagent device and a sample analyzer that addresses the problem of complex structure and difficult control of instruments that use dual drives for reagent extraction and reagent bottle ejection.

[0005] To achieve the above objectives, the reagent device proposed in this invention includes:

[0006] Base;

[0007] The extraction mechanism includes a fixed plate and a needle assembly disposed on the fixed plate, the needle assembly being used to extract reagent from a reagent bottle;

[0008] The reagent compartment, located below the extraction mechanism, includes a fixed base connected to the base and a movable base movably connected to the fixed base, the movable base being used to hold the reagent bottle;

[0009] The driving mechanism includes a driving component, a transmission assembly, and a connecting assembly connected to the transmission assembly. The driving component is disposed on the base. Both the transmission assembly and the connecting assembly are movably connected to the base. One end of the connecting assembly is connected to the fixed plate, and the other end of the connecting assembly is movably connected to the movable seat. The driving component is used to drive the transmission assembly to move the connecting assembly, thereby causing the fixed plate to move closer to or away from the fixed seat in the vertical direction, and causing the movable seat to move closer to or away from the fixed seat in the horizontal direction.

[0010] Preferably, the base is provided with a first guide rod extending vertically, the connecting assembly includes a connecting block and a connecting plate connected to each other, the connecting block has a through hole for the first guide rod to be slidably inserted, the connecting plate extends vertically, and the top of the connecting plate is connected to the fixed plate, and the bottom of the connecting plate is movably connected to the movable seat.

[0011] Preferably, the connecting plate has a first sliding groove and a second sliding groove that are interconnected. The first sliding groove extends vertically, and the second sliding groove extends downward at an angle from a position close to the first sliding groove to a position away from the first sliding groove. The movable seat has a sliding shaft that can be slidably inserted into the first sliding groove and the second sliding groove.

[0012] Preferably, the connecting plate is further provided with a third sliding groove through which the sliding shaft can be slidably inserted. The third sliding groove is located at the end of the second sliding groove away from the first sliding groove and communicates with the second sliding groove. The third sliding groove extends downward.

[0013] Preferably, the third groove has two oppositely arranged sidewalls and a bottom wall connecting the two sidewalls, the two sidewalls extending in a vertical direction, and the bottom wall and the two sidewalls being connected by a circular arc transition.

[0014] Preferably, the sliding shaft includes an abutting section, a sliding section, and a connecting section connected in sequence. The movable seat is provided with a vertical plate. The connecting section is connected to the vertical plate. The sliding section is slidably inserted into the first sliding groove and the second sliding groove. The abutting section is used to abut against the side of the connecting plate away from the vertical plate.

[0015] Preferably, a rotating member is sleeved on the outer periphery of the sliding section, and the rotating member is slidably inserted into the first sliding groove and the second sliding groove.

[0016] Preferably, the rotating component is a bearing or a bushing.

[0017] Preferably, the end of the connecting segment away from the abutting segment is recessed to form a connecting hole for screwing in the connecting bolt, and a through hole for inserting the connecting segment is provided through the upright plate, and the wall of the through hole is provided with an abutting platform that abuts against the connecting segment.

[0018] Preferably, the connecting plate has a connecting hole for bolts to pass through, and the connecting block has a mounting hole corresponding to the connecting hole for the bolts to be screwed in.

[0019] Preferably, the transmission assembly includes a driving wheel, a driven wheel, and a transmission belt. The driving wheel and the driven wheel are spaced apart in the vertical direction and are rotatably connected to the base. The driving member has a driving shaft, which is connected to the driving wheel. The transmission belt is wound around the outer periphery of the driving wheel and the driven wheel, and the connecting block is connected to the transmission belt.

[0020] Preferably, the fixed seat is provided with a second guide rod that extends horizontally, and the movable seat is provided with a sliding block that is slidably connected to the second guide rod.

[0021] Preferably, the needle assembly includes a plurality of reagent needles, which are fixed at intervals on the fixing plate. The movable seat is provided with placement positions for placing the reagent bottle, and the number of placement positions is consistent with the number of reagent needles and is set one-to-one.

[0022] In addition, the present invention also proposes a sample analyzer, which includes a housing and a reagent device as described above, the reagent device including a base connected to the housing.

[0023] In this invention, the reagent device includes a base, an extraction mechanism, a reagent compartment, and a driving mechanism. The extraction mechanism includes a fixed plate and a needle assembly mounted on the fixed plate. The reagent compartment is located below the extraction mechanism and includes a fixed seat connected to the base and a movable seat movably connected to the fixed seat. The driving mechanism includes a driving component, a transmission assembly and a connecting assembly that are interconnected and movably connected to the base. One end of the connecting assembly is connected to the fixed plate, and the other end is movably connected to the movable seat. When reagent extraction is required, the reagent bottle containing the reagent is first placed on the movable seat of the reagent compartment. The driving component drives the transmission assembly to move the connecting assembly. The movable seat moves horizontally away from the fixed seat. When the movable seat is positioned for the reagent bottle, the reagent bottle can be placed on the movable seat. After the reagent bottle is placed, the driving component drives the transmission assembly to move the connecting assembly, causing the movable seat to move horizontally towards the fixed seat. When the movable seat is on the fixed seat, the driving component continues to drive the transmission assembly to move the connecting assembly, causing the fixed plate to move vertically towards the fixed seat. The needle assembly removes the reagent from the reagent bottle. After the reagent is removed, the driving component drives the transmission assembly to move the connecting assembly, causing the fixed plate to move vertically away from the fixed seat, thus completing the reagent removal. This invention, through the transmission assembly and connecting assembly, allows a single driving component to complete both reagent extraction and reagent bottle ejection. The structure is simple, eliminating the need for linkage between two driving components and reducing control complexity. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the movable seat of the reagent device near the fixed seat in one embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of the movable seat of the reagent device near the fixed seat in one embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the reagent device in one embodiment of the present invention, showing the movable seat away from the fixed seat;

[0028] Figure 4 This is a schematic cross-sectional view of the movable seat of the reagent device away from the fixed seat in one embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the connecting plate in one embodiment of the present invention;

[0030] Figure 6 This is a partial cross-sectional schematic diagram of the reagent device in one embodiment of the present invention;

[0031] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0032] Explanation of icon numbers:

[0033] label name label name 1 base 323 Rotating component 11 First guide rod 324 Placement space 2 Extraction agency 4 Drive mechanism 21 Fixed plate 41 Drive components 22 pin assembly 42 Transmission components 221 reagent needle 421 drive wheel 3 Reagent compartment 422 Driven wheel 31 Fixed base 423 Drive belt 311 Second guide rod 43 Connection components 32 Activity Seat 431 Connecting block 321 sliding shaft 432 Connecting plate 3211 Connection Section 4321 First chute 3212 Sliding segment 4322 Second chute 3213 Connecting segment 4323 Third Slide 322 uprights 10 reagent bottle

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0040] This invention proposes a reagent device and a sample analyzer, aiming to solve the problem that instruments using dual drives for reagent extraction and reagent bottle ejection have complex structures and are difficult to control.

[0041] Please refer to Figures 1 to 4The reagent device includes a base 1, an extraction mechanism 2, a reagent compartment 3, and a driving mechanism 4. The extraction mechanism 2 includes a fixed plate 21 and a needle assembly 22 disposed on the fixed plate 21. The needle assembly 22 is used to extract reagents from the reagent bottle 10. The reagent compartment 3 is located below the extraction mechanism 2 and includes a fixed seat 31 connected to the base 1 and a movable seat 32 movably connected to the fixed seat 31. The movable seat 32 is used to place the reagent bottle 10. The driving mechanism 4 includes a driving component 41, a transmission assembly 42, and a connecting assembly 43 connected to the transmission assembly 42. The driving component 41 is disposed on the base 1. The transmission assembly 42 and the connecting assembly 43 are both movably connected to the base 1. One end of the connecting assembly 43 is connected to the fixed plate 21, and the other end of the connecting assembly 43 is movably connected to the movable seat 32. The driving component 41 is used to drive the transmission assembly 42 to move the connecting assembly 43, so as to move the fixed plate 21 vertically closer to or away from the fixed seat 31, and to move the movable seat 32 horizontally closer to or away from the fixed seat 31.

[0042] When reagent extraction is required, the drive assembly drives the transmission assembly 42 to move the connecting assembly 43, causing the fixed plate 21 to carry the needle assembly 22 vertically away from the fixed seat 31. This causes the lower end of the needle assembly 22 to be higher than the top of the reagent bottle 10 on the movable seat 32. The drive assembly 41 continues to drive the transmission assembly 42 to move the connecting assembly 43, causing the movable seat 32 to move horizontally away from the fixed seat 31. When the movable seat 32 is in the position for placing the reagent bottle 10, the reagent bottle 10 can be placed on the movable seat 32. Figure 3 The needle assembly 22 is shown in the position with the needle in place and the reagent compartment 3 in the open position. After the reagent bottle 10 is placed, the drive component 41 drives the transmission component 42 to move the connecting component 43, causing the movable seat 32 to move horizontally towards the fixed seat 31. When the movable seat 32 is on the fixed seat 31, the drive component continues to drive the transmission component 42 to move the connecting component 43, causing the fixed plate 21 to move vertically towards the fixed seat 31. The needle assembly 22 then removes the reagent from the reagent bottle 10. Figure 1 The needle assembly 22 is in the inserted position and the reagent compartment 3 is closed. After the reagent is removed, the drive assembly drives the transmission assembly 42 to move the connecting assembly 43, so as to move the fixing plate 21 away from the fixing seat 31 in the vertical direction, thereby completing the removal of the reagent.

[0043] This invention, through the transmission component 42 and the connecting component 43, enables a single driving component 41 to perform the vertical movement of lifting and lowering the needle, and the horizontal movement of pushing and pushing the reagent bottle 10. In other words, a single driving source can complete the reagent extraction and the ejection of the reagent bottle 10 from the instrument. The structure is simple, eliminating the need for linkage between two driving components 41, thus reducing control difficulty. Moreover, the entire process is electrically driven, simplifying the reagent replacement steps. There is no need for manual contact with the needle component 22, ensuring safety and hygiene, and preventing contact with the reagent, thus ensuring reagent safety.

[0044] Among them, such as Figure 2 As shown, in one embodiment, a first guide rod 11 is provided on the base 1, extending vertically. The connecting assembly 43 includes a connecting block 431 and a connecting plate 432 connected to each other. The connecting block 431 has a through-hole for the first guide rod 11 to be slidably inserted. The connecting plate 432 extends vertically, and its top is connected to the fixed plate 21, while its bottom is movably connected to the movable seat 32. The first guide rod 11 can be a cylindrical guide rod, facilitating the sliding of the connecting block 431 on the first guide rod 11 in the vertical direction. When the driving member 41 is working, the connecting block 431 can be driven to slide vertically on the first guide rod 11 through the transmission assembly 42, thereby driving the fixed plate 21 to move the needle assembly 22 away from the movable seat 32 and subsequently moving the movable seat 32 away from the fixed seat 31. Alternatively, the movable seat 32 can be moved closer to the fixed seat 31, and subsequently the fixed plate 21 can be moved closer to the movable seat 32.

[0045] Furthermore, please combine Figure 5 As shown, a first sliding groove 4321 and a second sliding groove 4322, which are interconnected, are provided through the connecting plate 432. The first sliding groove 4321 extends vertically, and the second sliding groove 4322 extends downward at an angle from a position close to the first sliding groove 4321 away from the first sliding groove 4321. The movable seat 32 is provided with a sliding shaft 321 that can be slidably inserted into the first sliding groove 4321 and the second sliding groove 4322. Please refer to... Figure 2 As shown, when the needle assembly 22 is in the lowered position and the reagent compartment 3 is in the closed position, the sliding shaft 321 on the movable seat 32 is located at the upper end of the connecting plate 432. During the needle lifting process, the driving component 41 drives the transmission assembly 42 to move the connecting plate 432 upward. During the needle lifting process, the sliding shaft 321 remains stationary, that is, the first groove 4321 of the connecting plate 432 moves upward relative to the sliding shaft 321. During the needle lowering process, the driving component 41 drives the transmission assembly 42 to move the connecting plate 432 downward. During the downward process, the sliding shaft 321 remains stationary, that is, the first groove 4321 of the connecting plate 432 moves downward relative to the sliding shaft 321. Please refer to... Figure 4As shown, when the reagent device is in the needle-lifting position and the reagent compartment 3 is in the open position, the sliding shaft 321 on the reagent compartment 3 is located at the lower end of the connecting plate 432. When the reagent compartment 3 is in the opening process, the connecting plate 432 rises, and the sliding shaft 321 is pushed by the groove wall of the second sliding groove 4322. The movable seat 32 where the sliding shaft 321 is located is slidably connected to the fixed seat 31 in the horizontal direction, which causes the sliding shaft 321 to move in the horizontal direction, thereby causing the movable seat 32 to move away from the fixed seat 31 in the horizontal direction. When the reagent compartment 3 is in the closing process, the connecting plate 432 descends, and the sliding shaft 321 is pushed by the groove wall of the second sliding groove 4322. The movable seat 32 where the sliding shaft 321 is located is slidably connected to the fixed seat 31 in the horizontal direction, which causes the sliding shaft 321 to move in the horizontal direction, thereby causing the movable seat 32 to move closer to the fixed seat 31 in the horizontal direction.

[0046] The first groove 4321 extends vertically, protecting the needle assembly 22 during needle lifting or lowering, and also enabling the reagent chamber 3 to self-lock. Specifically, during needle lifting or lowering, the sliding shaft 321 on the reagent chamber 3 slides within the first groove 4321 of the connecting plate 432, preventing the reagent chamber 3 from being pulled out horizontally. This serves to protect the needle assembly 22 and achieve structural self-locking for the reagent chamber 3 to close completely. Furthermore, the second groove 4322 is inclined, extending downwards from the direction close to the first groove 4321, converting the vertical movement of the connecting plate 432 into the horizontal movement of the movable seat 32, allowing the reagent device to occupy less horizontal space. It should be noted that when the sliding shaft 321 is located at the connection between the first groove 4321 and the second groove 4322, the needle assembly 22 is completely separated from the reagent bottle 10 inside the reagent chamber 3.

[0047] In another embodiment, a third sliding groove 4323 is also provided through the connecting plate 432 for the sliding shaft 321 to be slidably inserted. The third sliding groove 4323 is located at the end of the second sliding groove 4322 away from the first sliding groove 4321 and communicates with the second sliding groove 4322. The third sliding groove 4323 extends downward. When the reagent compartment 3 is fully opened, that is, when the movable seat 32 moves away from the fixed seat 31 in the horizontal direction, the sliding shaft 321 is located at the bottom end of the third sliding groove 4323. The sliding shaft 321 will be blocked by the third sliding groove 4323 and cannot continue to move in the horizontal direction, thereby playing a role in fixing the movable seat 32 in place and realizing the self-locking of the reagent compartment 3.

[0048] The third slide groove 4323 has two opposing side walls and a bottom wall connecting the two side walls. The two side walls extend vertically, and the bottom wall is connected to the two side walls by a rounded transition. To accommodate the circular cross-section of the sliding shaft 321, the bottom wall and the two side walls of the third slide groove 4323 are connected by a rounded transition. This allows the sliding shaft 321 to make surface contact with the bottom wall and the two side walls of the third slide groove 4323 when it is located at the bottom end of the third slide groove 4323, thus making the limiting more reliable and improving the self-locking effect.

[0049] Furthermore, please combine Figure 6 , Figure 7 As shown, to achieve multiple functions, the sliding shaft 321 includes an abutment section 3211, a sliding section 3212, and a connecting section 3213 connected in sequence. The movable seat 32 is provided with a vertical plate 322. The connecting section 3213 is connected to the vertical plate 322. The sliding section 3212 is slidably inserted into the first slide groove 4321 and the second slide groove 4322. The abutment section 3211 is used to abut against the side of the connecting plate 432 away from the vertical plate 322. When the sliding shaft 321 slides in the first slide groove 4321, the sliding section 3212 of the sliding shaft 321 is inserted into the first slide groove 4321 and can slide vertically in the first slide groove 4321. The sliding shaft 321 passes through the first slide groove 4321 and is connected to the vertical plate 322 through the connecting section 3213, thereby limiting the connecting plate 432 to be located between the abutment section 3211 and the vertical plate 322.

[0050] In addition, in the above embodiment, a rotating member 323 is sleeved on the outer periphery of the sliding segment 3212, and the rotating member 323 is slidably inserted into the first sliding groove 4321 and the second sliding groove 4322. In order to reduce the sliding friction of the sliding member in the first sliding groove 4321, the rotating member 323 can be provided on the outer periphery of the sliding segment 3212. The rotating member 323 is located between the sliding segment 3212 and the groove wall of the first sliding groove 4321, the second sliding groove 4322 or the third sliding groove 4323, so that the sliding between the sliding segment 3212 and the connecting plate 432 can be smoother and the jamming phenomenon during the sliding process can be avoided.

[0051] In one embodiment, the rotating component 323 is a bearing or bushing. Due to prolonged friction, the rotating component 323 can be configured as a bearing or bushing with a long service life. The inner ring of the bearing or bushing is fitted around the outer periphery of the sliding section 3212, and the outer ring is inserted into the first sliding groove 4321, the second sliding groove 4322, or the third sliding groove 4323.

[0052] Furthermore, the end of the connecting segment 3213 furthest from the abutting segment 3211 is recessed to form a threaded hole for the connecting bolt to be screwed in. A through hole is provided on the upright plate 322 for the connecting segment 3213 to be inserted, and the wall of the through hole has an abutment platform that abuts against the connecting segment 3213. In this embodiment, to improve the assembly accuracy of the reagent device, the connection structure between the connecting segment 3213 and the upright plate 322 can be configured as follows: the end of the connecting segment 3213 furthest from the abutting segment 3211 is recessed to form a threaded hole, and the upright plate 322 has a through hole for the connecting segment 3213 to be inserted, with the wall of the through hole having an abutment platform that abuts against the connecting segment 3213. During assembly, the connecting segment 3213 is inserted into the through hole, so that the end of the connecting segment 3213 furthest from the abutting segment 3211 touches the abutment platform. Then, the connecting bolt is inserted into the through hole from the side of the upright plate 322 furthest from the connecting plate 432 and screwed into the threaded hole until the connecting segment 3213 abuts against the abutment platform.

[0053] In addition, in the above embodiment, the connecting plate 432 has a connecting hole for bolts to pass through, and the connecting block 431 has a mounting hole corresponding to the connecting hole for bolts to be screwed in. The connecting plate 432 and the connecting block 431 are detachably connected by bolts, which facilitates the debugging of the reagent device. When assembling the connecting plate 432 and the connecting block 431, first align the connecting hole on the connecting plate 432 with the mounting hole on the connecting block 431, then pass the bolt through the connecting hole and screw it into the mounting hole to achieve the connection between the connecting plate 432 and the connecting block 431.

[0054] In one embodiment, the transmission assembly 42 includes a driving wheel 421, a driven wheel 422, and a transmission belt 423. The driving wheel 421 and the driven wheel 422 are spaced apart in a vertical direction and are both rotatably connected to the base 1. The driving member 41 has a driving shaft connected to the driving wheel 421. The transmission belt 423 is wound around the outer periphery of the driving wheel 421 and the driven wheel 422. The connecting block 431 is connected to the transmission belt 423. The driving member 41 can be a motor. The driving wheel 421 of the transmission assembly is connected to the motor shaft of the motor. The rotation of the motor shaft can drive the driving wheel 421 to rotate. The rotation of the driving wheel 421 can drive the transmission belt 423 to move. The movement of the transmission belt 423 can drive the connecting assembly 43 to move. Using the transmission belt 423 to drive the needle assembly 22 and the movable seat 32 can reduce the noise generated by the sampling device.

[0055] Furthermore, the fixed base 31 is provided with a second guide rod 311, which extends horizontally, and the movable base 32 is provided with a sliding block slidably connected to the second guide rod 311. In one embodiment, the fixed base 31 is provided with two second guide rods 311 spaced apart, which extend horizontally, and the movable base 32 is provided with two sliding blocks spaced apart, which are slidably connected to the two second guide rods 311 in a one-to-one correspondence. The second guide rods 311 can provide support for the movable base 32 and also guide the movement of the movable base 32.

[0056] In one embodiment, the needle assembly 22 includes a plurality of reagent needles 221, which are fixed at intervals on the fixing plate 21. The movable seat 32 is provided with placement positions 324 for placing reagent bottles 10. The number of placement positions 324 is consistent with the number of reagent needles 221 and is set one-to-one. To adapt to the diversity of sample testing, multiple reagent bottle 10 placement positions 324 can be set on a reagent device. The number of reagent needles 221 is consistent with the number of reagent positions and is set one-to-one. When the needle assembly 22 descends to draw reagents, each reagent needle 221 is inserted into the reagent bottle 10 in the corresponding placement position 324. The number of reagent needles 221 can be 2, 3, 4, 5, etc. Each reagent needle 221 can draw the same reagent or different reagents, so that the reagent needles 221 do not need to be frequently cleaned when changing different reagents, thus preventing reagent contamination.

[0057] In addition, this invention also proposes a sample analyzer, which includes a housing and a reagent device as described above. The reagent device includes a base 1 connected to the housing. The user interface on the sample analyzer indicates that the reagent is used up and pops up a reagent replacement interface. The user can click the "Replace Reagent" button, thereby controlling the motor drive 41 to work through the control device of the sample analyzer. The motor drives the drive component and the connecting component 43, which in turn drives the needle component 22 to lift the needle and then push out the movable seat 32 for reagent replacement. After the reagent replacement is completed, the user can click the "Complete Reagent Replacement" button on the user interface. The control device then controls the motor to work. The motor drives the drive component and the connecting component 43, which in turn pushes back the movable seat 32 and then drives the needle component 22 to lower the needle. After the needle is lowered into place, the user display shows that the reagent replacement is complete. The specific structure of the reagent device in this sample analyzer is as described in the above embodiments. Since this sample analyzer adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0058] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A reagent apparatus, characterized in that, The reagent device includes: Base; The extraction mechanism includes a fixed plate and a needle assembly disposed on the fixed plate, the needle assembly being used to extract reagent from a reagent bottle; The reagent compartment, located below the extraction mechanism, includes a fixed base connected to the base and a movable base movably connected to the fixed base, the movable base being used to hold the reagent bottle; The driving mechanism includes a driving component, a transmission assembly, and a connecting assembly connected to the transmission assembly. The driving component is disposed on the base. The transmission assembly and the connecting assembly are both movably connected to the base. One end of the connecting assembly is connected to the fixed plate, and the other end of the connecting assembly is movably connected to the movable seat. The driving component is used to drive the transmission assembly to move the connecting assembly, thereby causing the fixed plate to move closer to or away from the fixed seat in the vertical direction, and causing the movable seat to move closer to or away from the fixed seat in the horizontal direction. The base is provided with a first guide rod, which extends vertically. The connecting assembly includes a connecting block and a connecting plate that are connected to each other. The connecting block has a through hole for the first guide rod to be slidably inserted. The connecting plate extends vertically, and the top of the connecting plate is connected to the fixed plate, while the bottom of the connecting plate is movably connected to the movable seat. The connecting plate has a first sliding groove and a second sliding groove that are interconnected. The first sliding groove extends vertically, and the second sliding groove extends downward at an angle from a position close to the first sliding groove to a position away from the first sliding groove. The movable seat has a sliding shaft that can be slidably inserted into the first sliding groove and the second sliding groove.

2. The reagent device as described in claim 1, characterized in that, The connecting plate is also provided with a third sliding groove through which the sliding shaft can be slidably inserted. The third sliding groove is located at the end of the second sliding groove away from the first sliding groove and is connected to the second sliding groove. The third sliding groove extends downward.

3. The reagent device as described in claim 2, characterized in that, The third slide has two oppositely arranged side walls and a bottom wall connecting the two side walls. The two side walls extend in a vertical direction, and the bottom wall is connected to the two side walls by a circular arc transition.

4. The reagent apparatus according to any one of claims 1 to 3, characterized in that, The sliding shaft includes an abutting section, a sliding section, and a connecting section connected in sequence. The movable seat is provided with a vertical plate. The connecting section is connected to the vertical plate. The sliding section is slidably inserted into the first sliding groove and the second sliding groove. The abutting section is used to abut against the side of the connecting plate away from the vertical plate.

5. The reagent device as described in claim 4, characterized in that, A rotating component is sleeved on the outer periphery of the sliding section, and the rotating component can be slidably inserted into the first sliding groove and the second sliding groove.

6. The reagent device as described in claim 5, characterized in that, The rotating component is a bearing or a bushing.

7. The reagent device as described in claim 4, characterized in that, The end of the connecting section away from the abutting section is recessed to form a connecting hole for screwing in the connecting bolt. The upright plate has a through hole for inserting the connecting section, and the wall of the through hole has an abutting platform that abuts against the connecting section.

8. The reagent apparatus according to any one of claims 1 to 3, characterized in that, The connecting plate has connecting holes for bolts to pass through, and the connecting block has mounting holes corresponding to the connecting holes for the bolts to be screwed in.

9. The reagent apparatus according to any one of claims 1 to 3, characterized in that, The transmission assembly includes a driving wheel, a driven wheel, and a transmission belt. The driving wheel and the driven wheel are spaced apart in the vertical direction and are rotatably connected to the base. The driving component has a driving shaft, which is connected to the driving wheel. The transmission belt is wound around the outer periphery of the driving wheel and the driven wheel, and the connecting block is connected to the transmission belt.

10. The reagent apparatus according to any one of claims 1 to 3, characterized in that, The fixed seat is provided with a second guide rod that extends horizontally, and the movable seat is provided with a sliding block that is slidably connected to the second guide rod.

11. The reagent apparatus according to any one of claims 1 to 3, characterized in that, The needle assembly includes multiple reagent needles, which are fixed at intervals on the fixed plate. The movable seat is provided with placement positions for placing the reagent bottle. The number of placement positions is consistent with the number of reagent needles and is set one-to-one.

12. A sample analyzer, characterized in that, The sample analyzer includes a housing and a reagent device as described in any one of claims 1 to 1, wherein the reagent device includes a base connected to the housing.

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