Sampling module and sample analyzer

Abstract

The invention discloses a sampling module and a sample analyzer, and the sampling module comprises a cross beam, a driving assembly, a horizontal movement assembly arranged on the cross beam, a vertical movement assembly arranged on the horizontal movement assembly, and a sampling needle arranged on the vertical movement assembly. The driving assembly comprises a transmission belt, a first driving component, a second driving component, a first driving wheel, a second driving wheel, four first driven wheels and a second driven wheel, wherein the first driving wheel and the second driving wheel are arranged at the two ends of the cross beam respectively, the four first driven wheels are arranged on the horizontal movement assembly, and the second driven wheel is arranged on the vertical movement assembly. The second driving component drives the second driving wheel to rotate; the transmission belt is provided with two fixed ends which are oppositely arranged, the two fixed ends are fixed to the vertical movement assembly respectively, and the transmission belt is arranged on the first driving wheel, the second driving wheel, the first driven wheel and the second driven wheel in a sleeving mode. The horizontal movement assembly and the vertical movement assembly share one set of driving assembly, and the structure of the sampling module is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of sample analyzers, and more specifically, to a sampling module and a sample analyzer. Background Art

[0002] Sample analyzers, such as biochemical analyzers, immunoassays, coagulation analyzers, and cell analyzers, etc., are instruments used to analyze and measure samples. Generally, reagents are added to the samples, and the characteristics, chemical components, and concentrations of the samples themselves are measured by certain methods after the samples react with the reagents.

[0003] The sampling module of the existing sample analyzer includes a sampling needle, a horizontal movement component, and a vertical movement component. The sampling needle moves above the sample container through the horizontal movement component, then descends into the sample container through the vertical movement component to suck the sample, then rises above the sample container through the vertical movement component, and moves the loaded sample to above the reaction cup through the horizontal movement component. Finally, it descends into the reaction cup through the vertical movement component to transport the sample inside the sampling needle into the reaction cup, and so on, to complete processes such as sampling and cleaning.

[0004] However, in the existing sample analyzer, the horizontal movement component and the vertical movement component are usually implemented by two sets of independent movement components, that is, both the horizontal movement component and the vertical movement component respectively include a driving member and corresponding movement members. The vertical movement component is integrally fixed on the horizontal movement component, and the horizontal movement component drives the vertical movement component to move horizontally together. The disadvantages of this method are as follows: First, the overall fixation of the vertical movement component on the horizontal movement component results in a particularly large load on the horizontal movement component, which is not suitable for high-speed movement scenarios; Second, the vertical movement component includes a driving member fixed on the horizontal movement component, such as a motor, etc. There are power lines, relevant in-place sensor control lines, etc. connected to the motor, resulting in the movement of these wires following the horizontal movement component and the vertical movement component for horizontal and vertical movements. The movement of these wires not only occupies more additional space but also requires additional protection members to protect the wires. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and provide a sampling module and a sample analyzer, so that the horizontal movement component and the vertical movement component share a set of driving components, simplify the structure, not only reduce the load of the horizontal movement component, but also avoid the movement of wires such as power lines and relevant in-place sensor control lines.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A sampling module, comprising:

[0008] A crossbeam;

[0009] A horizontal motion component, which is arranged on the cross beam, and the horizontal motion component can move horizontally along the cross beam;

[0010] A vertical motion component, which is arranged on the horizontal motion component, the vertical motion component can move up and down relative to the horizontal motion component, and the vertical motion component can move horizontally together with the horizontal motion component;

[0011] A sampling needle, which is fixedly connected to the vertical motion component, and the sampling needle moves together with the vertical motion component;

[0012] A driving component, which includes a transmission belt, a first driving wheel, a second driving wheel, four first driven wheels, a second driven wheel, a first driving member and a second driving member;

[0013] The first driving wheel and the second driving wheel are respectively arranged at two ends of the cross beam, the first driving member is arranged on the cross beam, the first driving member drives the first driving wheel to rotate, the second driving member is arranged on the cross beam, and the second driving member drives the second driving wheel to rotate;

[0014] The first driven wheels are arranged on the horizontal motion component, the second driven wheel is arranged on the vertical motion component, the transmission belt has two fixed ends arranged opposite to each other, and the two fixed ends are respectively fixed on the vertical motion component. The fixed ends and the second driven wheel are arranged along the vertical direction of the vertical motion component. The transmission belt is sleeved on the first driving wheel, the second driving wheel, the first driven wheels and the second driven wheel. The first driving wheel, the second driving wheel and the second driven wheel are respectively in contact with the inner wall of the transmission belt, the first driven wheels are in contact with the outer wall of the transmission belt, and the extending direction of the transmission belt realizes the conversion between the horizontal direction and the vertical direction at the first driven wheels respectively.

[0015] The present invention also discloses a sample analyzer, which includes the above-mentioned sampling module.

[0016] Implementing the embodiments of the present invention will have the following beneficial effects:

[0017] In the embodiments of the present invention, the horizontal motion component and the vertical motion component share a set of driving components, and the first driving member and the second driving member are respectively arranged on the cross beam and do not move together with the horizontal motion component and the vertical motion component, and their positions are fixed. This not only avoids the problem of power cords and other wires moving together with the horizontal motion component and the vertical motion component, but also reduces the load of the horizontal motion component, making it more suitable for high-speed motion scenarios. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Among them:

[0020] Figure 1 is the front view structural schematic diagram of the sampling module in a specific embodiment of the present invention.

[0021] Figure 2 is Figure 1 the front view structural schematic diagram of the shown structure after removing the vertical motion component.

[0022] Figure 3 is Figure 1 the front view structural schematic diagram of the vertical motion component in Specific Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Refer to Figures 1 to 3, the present invention discloses a sampling module, which includes a cross beam 10, a horizontal movement component 20, a vertical movement component 30, a sampling needle 40 and a driving component 50. The horizontal movement component 20 is arranged on the cross beam 10, and the horizontal movement component 20 can move horizontally along the cross beam 10. The vertical movement component 30 is arranged on the horizontal movement component 20, and the vertical movement component 30 can move up and down relative to the horizontal movement component 20, and the vertical movement component 30 can move horizontally together with the horizontal movement component 20; the sampling needle 40 is fixedly connected to the vertical movement component 30, and the sampling needle 40 moves together with the vertical movement component 30. The driving component 50 includes a transmission belt 51, a first driving wheel 52, a second driving wheel 53, four first driven wheels 54, a second driven wheel 55, a first driving member 56 and a second driving member 57; the first driving wheel 52 and the second driving wheel 53 are respectively arranged at both ends of the cross beam 10, the first driving member 56 is arranged on the cross beam 10, and the first driving member 56 drives the first driving wheel 52 to rotate, the second driving member 57 is arranged on the cross beam 10, and the second driving member 57 drives the second driving wheel 53 to rotate; the first driven wheels 54 are arranged on the horizontal movement component 20, the second driven wheel 55 is arranged on the vertical movement component 30, the transmission belt 51 has two fixed ends arranged opposite to each other, and the two fixed ends are respectively fixed on the vertical movement component 30, the fixed ends and the second driven wheel 55 are arranged along the vertical direction of the vertical movement component 30, the transmission belt 51 is sleeved on the first driving wheel 52, the second driving wheel 53, the first driven wheels 54 and the second driven wheel 55, the first driving wheel 52, the second driving wheel 53 and the second driven wheel 55 are respectively in contact with the inner wall of the transmission belt 51, the first driven wheels 54 are in contact with the outer wall of the transmission belt 51, and the extending direction of the transmission belt 51 realizes the conversion between the horizontal direction and the vertical direction at the first driven wheels 54 respectively.

[0025] When the first driving wheel 52 and the second driving wheel 53 rotate in the same direction, the transmission belt 51 drives the horizontal movement component 20 to move horizontally, and the movement of the horizontal movement component 20 drives the vertical movement component 30 and the sampling needle 40 to move horizontally together. At this time, the acting force directions of the transmission belt 51 on the four first driven wheels 54 are the same, that is, the four first driven wheels 54 rotate in the same direction, mainly providing power along the horizontal movement direction of the horizontal movement component 20, so that the horizontal movement component 20 moves horizontally. The force of the transmission belt 51 acting on the second driven wheel 55 and the force of the fixed end of the transmission belt 51 acting on the vertical movement component 30 are in opposite directions, and the vertical movement component 30 does not slide relative to the horizontal movement component 20.

[0026] When the first driving wheel 52 and the second driving wheel 53 rotate towards each other or away from each other, the transmission belt 51 drives the vertical movement assembly 30 to move up and down. The movement of the vertical movement assembly 30 drives the sampling needle 40 to move up and down together. At this time, the rotation directions of the two first driven wheels 54 close to the first driving wheel 52 are the same as those of the first driving wheel 52, and the rotation directions of the two first driven wheels 54 close to the second driving wheel 53 are the same as those of the second driving wheel 53. In this way, the acting forces of the transmission belt 51 on the four first driven wheels 54 are offset in the horizontal direction, and the horizontal movement assembly 20 does not move. When the first driving wheel 52 and the second driving wheel 53 rotate towards each other, the two fixed ends of the transmission belt 51 push the vertical movement assembly 30 upward. When the first driving wheel 52 and the second driving wheel 53 rotate away from each other, the acting force of the transmission belt 51 on the second driven wheel 55 causes the vertical movement assembly 30 to move downward.

[0027] The present invention enables the horizontal movement assembly 20 and the vertical movement assembly 30 to share a set of driving assembly 50, and the first driving member 56 and the second driving member 57 are respectively arranged on the cross beam 10, without moving together with the horizontal movement assembly 20 and the vertical movement assembly 30, and their positions are fixed. This not only avoids the problem of wires such as power lines moving together with the horizontal movement assembly 20 and the vertical movement assembly 30, but also reduces the load of the horizontal movement assembly 20, making it more suitable for high-speed movement scenarios.

[0028] In a specific embodiment, referring to Figures 1 to 3 , the horizontal movement assembly 20 includes a first slider 21, a horizontal guide rail 22 and a horizontal movement member 23. The first slider 21 and the horizontal guide rail 22 are respectively arranged on the cross beam 10 and the horizontal movement member 23, and the first slider 21 moves along the horizontal guide rail 22. In this embodiment, the horizontal guide rail 22 is arranged on the cross beam 10, the first slider 21 is fixedly connected to the horizontal movement member 23, and the first slider 21 drives the horizontal movement member 23 to slide along the horizontal guide rail 22.

[0029] Referring to Figure 1 and Figure 3 , the vertical movement assembly 30 includes a second slider 31, a vertical guide rail 32 and a vertical movement member 33. The second slider 31 and the vertical guide rail 32 are respectively arranged on the horizontal movement member 23 and the vertical movement member 33, and the second slider 31 moves along the vertical guide rail 32. In this embodiment, the vertical guide rail 32 is arranged on the horizontal movement member 23, the second slider 31 is fixedly connected to the vertical movement member 33, and the second slider 31 drives the vertical movement member 33 to slide along the vertical guide rail 32. Of course, in other embodiments, the positions of the second slider 31 and the vertical guide rail 32 can be interchanged.

[0030] Referring to Figure 2 and Figure 3, in this embodiment, the first driven wheel 54 is arranged on the horizontal movement member 23, and the second driven wheel 55 is arranged on the vertical movement member 33.

[0031] In a specific embodiment, referring to Figure 1 and Figure 2 , the connection line between the centers of the first driving wheel 52 and the second driving wheel 53 is along the horizontal movement direction of the horizontal movement assembly 20, that is, along the direction of the horizontal guide rail 22. When the first driving wheel 52 and the second driving wheel 53 rotate in the same direction, the acting force directions of the transmission belt 51 on the four first driven wheels 54 are the same, mainly providing power along the horizontal movement direction of the horizontal movement assembly 20, so that the horizontal movement assembly 20 moves horizontally.

[0032] Preferably, the connection line between the centers of the first driving wheel 52 and the second driving wheel 53 is the same as the horizontal movement direction of the horizontal movement assembly 20, that is, the same as the direction of the horizontal guide rail 22, to ensure the movement balance of the horizontal movement assembly 20 as much as possible.

[0033] Referring to Figure 1 and Figure 2 , in this embodiment, the first driving wheel 52 and the second driving wheel 53 are located below the horizontal guide rail 22, and the connection line between the centers of the first driving wheel 52 and the second driving wheel 53 is parallel to the horizontal guide rail 22. Of course, in other embodiments, the first driving wheel 52 and the second driving wheel 53 are respectively arranged on the outer sides of the two ends of the horizontal guide rail 22, and the horizontal guide rail 22 is located on the connection line between the centers of the first driving wheel 52 and the second driving wheel 53.

[0034] Referring to Figure 1 , the direction from the second driven wheel 55 to the fixed end is along the up and down movement direction of the vertical movement assembly 30, and the two fixed ends are located at one end of the vertical movement assembly 30 away from the second driven wheel 55. When the first driving wheel 52 and the second driving wheel 53 rotate towards each other or away from each other, the transmission belt 51 mainly acts on the vertical movement assembly 30 through the downward or upward force acting on the second driven wheel 55 or the fixed end of the transmission belt 51, so that the vertical movement assembly 30 moves up and down relative to the horizontal movement assembly 20.

[0035] Preferably, the connection line between the center of the second driven wheel 55 and the centers of the two fixed ends is the same as the up and down movement direction of the vertical movement assembly 30, that is, the connection line between the center of the second driven wheel 55 and the centers of the two fixed ends is the same as the direction of the vertical guide rail 32, to ensure the movement balance of the vertical movement assembly 30 as much as possible.

[0036] In a specific embodiment, the transmission belt 51 is located in the same plane to avoid tangential force on the transmission belt 51, reduce wear of the transmission belt 51, and make the horizontal movement and vertical movement smoother. Since the first driving wheel 52 and the second driving wheel 53 are arranged on the cross beam 10, the four first driven wheels 54 are arranged on the horizontal movement assembly 20, and the second driven wheel 55 and the fixed end are arranged on the vertical movement assembly 30, the two driving wheels, the four first driven wheels 54 and the second driven wheel 55 are not arranged in the same plane. The height of the rotating shafts of the driving wheels and the driven wheels can be adjusted to make the transmission belt 51 located in the same plane.

[0037] Reference Figure 1 , the vertical distance between the contact points of the two first driven wheels 54 close to the first driving wheel 52 and the transmission belt 51 is equal to the diameter of the first driving wheel 52, and the vertical distance between the contact points of the other two first driven wheels 54 close to the second driving wheel 53 and the transmission belt 51 is equal to the diameter of the second driving wheel 53, ensuring that the transmission belts 51 above and below the driving wheels are parallel to provide a force in the horizontal direction.

[0038] Preferably, the diameters of the first driving wheel 52 and the second driving wheel 53 are the same; the diameters of the four first driven wheels 54 are the same; the four first driven wheels 54 are symmetric about the center line between the center of the second driven wheel 55 and the center point between the two fixed ends, trying to ensure the movement balance and stability of the horizontal movement assembly 20 and the vertical movement assembly 30. Of course, in other embodiments, the diameters of the first driving wheel 52 and the second driving wheel 53 may not be the same, as long as the linear velocities on the transmission belt 51 are the same. The diameters of the four first driven wheels 54 may not be exactly the same either. When the two driving wheels move in different directions, as long as the forces on the four first driven wheels 54 in the horizontal direction are 0, and the four first driven wheels 54 may not be symmetric about the center line between the center of the second driven wheel 55 and the center point between the two fixed ends.

[0039] In a specific embodiment, the transmission belt 51 is a belt. In other embodiments, the transmission belt 51 can also be a chain. At this time, the driving wheels and the driven wheels are respectively gears.

[0040] In a specific embodiment, the first driving member 56 and the second driving member 57 are respectively motors.

[0041] The present invention also provides a sample analyzer, which includes the above-mentioned sampling module. The sample analyzer further includes a reagent carrier module, and the reagent carrier module includes a carrier plate. A plurality of reaction cups are accommodated on the carrier plate, and each reaction cup is used to detect a sample. Generally, the carrier plate is of a circular structure, and at least one circle of cup positions for accommodating the reaction cups is arranged on the circumference of the carrier plate. The reagent carrier module further includes a rotating mechanism for driving the carrier plate to rotate. Each time the carrier plate rotates one week, it advances one cup position forward. The sampling module is arranged above the carrier plate, and the sampling needle 40 of the sampling module sequentially adds samples and / or reaction solutions, diluents, etc. to each reaction cup at the sampling positions.

[0042] The cross beam 10 can be stationary or rotatable. When it is stationary, it provides horizontal movement in one direction. When it is rotatable, it can provide horizontal movement in any direction.

[0043] The horizontal movement enables the sampling needle 40 to move between the reaction cups, the cleaning pool, the sample area, the reaction solution area, etc., and the vertical movement enables the sampling needle 40 to enter and exit each container such as each reaction cup and the cleaning pool.

[0044] The above embodiments only express several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A sampling module, characterized in that, it includes: a cross beam; a horizontal movement component, which is arranged on the cross beam and can move horizontally along the cross beam; a vertical movement component, which is arranged on the horizontal movement component and can move up and down relative to the horizontal movement component, and the vertical movement component can move horizontally together with the horizontal movement component; a sampling needle, which is fixedly connected to the vertical movement component and moves together with the vertical movement component; a driving component, which includes a transmission belt, a first driving wheel, a second driving wheel, four first driven wheels, a second driven wheel, a first driving member and a second driving member; the first driving wheel and the second driving wheel are respectively arranged at both ends of the cross beam, the first driving member is arranged on the cross beam, the first driving member drives the first driving wheel to rotate, the second driving member is arranged on the cross beam, and the second driving member drives the second driving wheel to rotate; the first driven wheels are arranged on the horizontal movement component, the second driven wheel is arranged on the vertical movement component, the transmission belt has two relatively arranged fixed ends, and the two fixed ends are respectively fixed on the vertical movement component. The fixed ends and the second driven wheel are arranged along the vertical direction of the vertical movement component. The transmission belt is sleeved on the first driving wheel, the second driving wheel, the first driven wheels and the second driven wheel. The first driving wheel, the second driving wheel and the second driven wheel are respectively in contact with the inner wall of the transmission belt, and the first driven wheels are in contact with the outer wall of the transmission belt. The extending direction of the transmission belt realizes the conversion between the horizontal direction and the vertical direction at the first driven wheels respectively.

2. The sampling module according to claim 1, characterized in that, the connection line between the centers of the first driving wheel and the second driving wheel is along the horizontal movement direction of the horizontal movement component; the direction from the second driven wheel to the fixed end is along the up and down movement direction of the vertical movement component.

3. The sampling module according to claim 2, characterized in that, the transmission belt is located in the same plane.

4. The sampling module according to claim 3, characterized in that, the vertical distance between the contact points of the two first driven wheels close to the first driving wheel and the transmission belt is equal to the diameter of the first driving wheel, and the vertical distance between the contact points of the other two first driven wheels and the transmission belt is equal to the diameter of the second driving wheel.

5. The sampling module according to claim 4, characterized in that, the first driving wheel and the second driving wheel have the same diameter; the four first driven wheels have the same diameter; the four first driven wheels are symmetric about the connection line between the center of the second driven wheel and the center point between the two fixed ends.

6. The sampling module according to any one of claims 1 to 5, characterized in that, The horizontal motion assembly includes a first slider, a horizontal guide rail, and a horizontal motion member. The first slider and the horizontal guide rail are respectively disposed on the horizontal motion member and the cross beam, and the first slider moves along the horizontal guide rail. The first driven wheel is disposed on the horizontal motion member.

7. The sampling module according to claim 6, wherein, The vertical motion assembly includes a second slider, a vertical guide rail, and a vertical motion member. The second slider and the vertical guide rail are respectively disposed on the horizontal motion member and the vertical motion member, and the second slider moves along the vertical guide rail. The second driven wheel is disposed on the vertical motion member.

8. The sampling module according to claim 1, wherein, The transmission belt is a belt or a chain.

9. The sampling module according to claim 1, wherein, The first driving member and the second driving member are respectively motors.

10. A sample analyzer, wherein, It includes the sampling module according to any one of claims 1 to 9.

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