Test tube sample loading device and particle analyzer

Abstract

The utility model discloses a test tube sample loading device and a particle analyser, the test tube sample loading device comprises: a test tube assembly, which comprises a test tube rack and a mounting member, the mounting member is rotatably connected with the test tube rack, and the mounting member is used for placing a test tube; the driving assembly is in transmission connection with the test tube assembly and is used for driving the test tube assembly to move up and down in the height direction, so that the test tube assembly has a sample loading position and a taking and placing position; the trigger part is arranged below the mounting part, and when the driving assembly drives the test tube assembly to move downwards until the mounting part abuts against the trigger part, the mounting part can rotate relative to the test tube rack, so that the test tube assembly has a taking and placing position. When the driving assembly drives the test tube assembly to move downwards until the mounting piece abuts against the triggering piece, the mounting piece can rotate relative to the test tube rack, so that the mounting piece is obliquely placed, an operator can take and place the mounting piece conveniently, the structure is simple, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling and detection, in particular to a test tube sampling device and a particle analyzer. Background Art

[0002] Automated detection of tiny particles, such as cells, has enormous application value in both clinical and scientific research fields. For example, a blood cell analyzer, a particle analyzer, can identify cells and output information such as the number and volume of red blood cells, white blood cells, and platelets in a human blood sample. Particle analyzers often have a sample loading module that collects samples from sample tubes.

[0003] In the prior art, single-tube loading devices use two motors: one to move the test tube up and down, and the other to rotate the test tube rack, allowing the rack to be moved outward for easy access. However, the additional motor's control and feedback, coupled with the fact that this module is integrally mounted on the vertically moving motor, results in a bulky structure, complex control, and a correspondingly large particle analyzer. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a test tube loading device. When a drive assembly drives the test tube assembly downward until the mounting member abuts against a trigger member, the mounting member can rotate relative to the test tube rack to tilt the mounting member, making it easier for the operator to pick up and place the sample. The device has a simple structure and high reliability.

[0005] According to an embodiment of the present invention, the test tube loading device includes: a test tube assembly, including: a test tube rack and a mounting member, the mounting member is rotatably connected to the test tube rack, and the mounting member is used to place the test tube; a driving assembly, the driving assembly is transmission-connected to the test tube assembly, and is used to drive the test tube assembly to move up and down in the height direction so that the test tube assembly has a loading position and a pick-up and placement position; a trigger member, the trigger member is arranged below the mounting member, and when the driving assembly drives the test tube assembly to move downward until the mounting member abuts against the trigger member, the mounting member can rotate relative to the test tube rack so that the test tube assembly has a pick-up and placement position.

[0006] According to the test tube loading device of the embodiment of the present invention, when the driving assembly drives the test tube assembly to move downward until the mounting part abuts against the trigger part, the mounting part can be rotated relative to the test tube rack so that the mounting part is placed at an angle, which is convenient for the operator to pick up and place. The structure is simple and the reliability is high.

[0007] According to some embodiments of the present invention, an upper surface of the trigger member is provided with an inclined surface, and the inclined surface selectively abuts against the mounting member to enable the mounting member to rotate relative to the test tube rack.

[0008] According to some embodiments of the present invention, the test tube loading device further includes: a reset member, which is arranged on the test tube rack and is transmission-connected to the mounting member to drive the mounting member to rotate relative to the test tube rack to reset when the test tube assembly moves upward from the pick-up and placement position.

[0009] According to some embodiments of the present invention, the reset member is an elastic member.

[0010] According to some embodiments of the present invention, the test tube rack includes: a first plate and a second plate, the first plate and the second plate are connected and perpendicular to the first plate, and the second plate is rotatably connected to the mounting member.

[0011] According to some embodiments of the present invention, the second plate body includes: a first part, a second part and a third part, the first part and the second part are connected through the third part, and the mounting member is rotatably connected to the first part and the second part; when the test tube assembly moves along the height direction, the third part abuts against the lower surface of the mounting member.

[0012] According to some embodiments of the present invention, a through hole is formed on the second portion, and the trigger member selectively passes through the through hole to abut against the mounting member.

[0013] According to some embodiments of the present invention, the mounting member includes: a base plate and a sleeve, the base plate is rotatably connected to the test tube rack, the sleeve is connected to the base plate, and the sleeve is used to accommodate the test tube.

[0014] According to some embodiments of the present invention, the test tube sample loading device further includes: a sample aspirating needle, a swab is provided on the first plate, and the sample aspirating needle at least partially penetrates the swab.

[0015] According to some embodiments of the present invention, the length of the sample aspirating needle exposed from the lower surface of the upper end installation position is L, and L satisfies the relationship: 85mm≤L≤130mm.

[0016] According to some embodiments of the present invention, the distance between the upper surface of the swab and the bottom of the test tube in the mounting member is H, and H and L satisfy the relationship: 0≤HL≤2mm.

[0017] The particle analyzer according to the embodiment of the second aspect of the present invention includes: the test tube loading device.

[0018] According to some embodiments of the present invention, the particle analyzer includes: a shell, the test tube loading device is located in the shell, and an opening is provided on the shell. When the test tube assembly moves downward to the pick-up and placement position, it at least partially extends out of the shell.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a test tube assembly in a sample loading position according to an embodiment of the present utility model;

[0022] Figure 2 is a schematic diagram of a test tube assembly according to an embodiment of the present invention in one direction of a pick-up and placement position;

[0023] Figure 3 is a schematic diagram of the test tube assembly according to an embodiment of the present invention in another direction of the pick-up and placement position;

[0024] Figure 4 is a schematic diagram of a test tube assembly according to an embodiment of the present invention in another direction of a sample loading position;

[0025] Figure 5 This is an exploded view of a test tube sample loading device according to an embodiment of the present utility model;

[0026] Figure 6 It is a structural schematic diagram of a particle analyzer according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 100. Test tube loading device;

[0029] 10. Test tube assembly; 11. Test tube rack; 111. Positioning portion; 112. First plate; 113. Second plate; 114. First portion; 115. Second portion; 116. Third portion; 117. Through hole; 12. Mounting member; 121. Bottom plate; 122. Sleeve; 123. Accommodating space; 13. Resetting member; 14. Rotating member; 15. Swab; 151. Liquid inlet; 152. Liquid outlet;

[0030] 20. Driving assembly; 21. Driving member; 22. Transmission member;

[0031] 31. trigger member; 311. inclined surface; 312. trigger portion;

[0032] 41. Test tube; 42. Sample aspiration needle; 43. Bracket; 44. Mounting plate;

[0033] 1000. Particle analyzer; 200. Housing; 210. Opening. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0035] Reference below Figures 1-6 The test tube sample loading device 100 according to an embodiment of the present invention is described, and a particle analyzer 1000 including the test tube sample loading device 100 is also proposed.

[0036] The test tube sample loading device 100 of the present invention can be arranged on a particle analyzer 1000 for loading samples.

[0037] The height direction is Figures 1-6 The up and down directions in .

[0038] Combine Figure 1-Figure 5 As shown, the test tube loading device 100 is also provided with a sample suction needle 42 for sampling. The sample suction needle 42 is arranged above the test tube assembly 10. The driving assembly 20 drives the test tube assembly 10 to move upward. The sample suction needle 42 is used to extend into the test tube 41 to absorb the sample to be tested.

[0039] like Figure 2-Figure 5 As shown, the test tube loading device 100 includes: a test tube assembly 10 and a drive assembly 20. The drive assembly 20 is in transmission connection with the test tube assembly 10 and is used to drive the test tube assembly 10 to move up and down in the height direction so that the test tube assembly 10 has a sample loading position and a pick-up and drop-down position. When the test tube assembly 10 is in the sample loading position, the sample aspirator 42 can aspirate the sample to be tested in the test tube 41 for sampling. When the test tube assembly 10 is in the drop-down position, the operator can place the test tube 41 in the test tube assembly 10, and the drive assembly 20 will then drive the test tube assembly 10 upward to facilitate the sample aspirator 42 to sample. Alternatively, after the sample aspirator 42 has completed sampling the test tube 41, the test tube 41 can be removed for subsequent operations.

[0040] according to Figure 1-Figure 5As shown, the test tube assembly 10 includes a test tube rack 11 and a mounting member 12. The mounting member 12 is rotatably connected to the test tube rack 11 and is used to hold a test tube 41. Specifically, the test tube 41 can be placed in the mounting member 12. When the mounting member 12 is not in contact with the trigger member 31, the lower end of the mounting member 12 contacts the test tube rack 11, ensuring that the test tube 41 is in a vertical position. The drive assembly 20 is in transmission connection with the test tube rack 11. The drive assembly 20 drives the test tube rack 11 to move up and down in the height direction, and the upward and downward movement of the test tube rack 11 drives the mounting member 12 to move with it. When the driving assembly 20 drives the test tube rack 11 to move downward, the mounting part 12 can rotate relative to the test tube rack 11, and the test tube 41 in the mounting part 12 rotates relative to the test tube rack 11, and the test tube 41 tilts outward to be in a pick-up and placement position, which is convenient for the operator to pick up or place the test tube 41; when the driving assembly 20 drives the test tube rack 11 to move upward, the test tube 41 in the mounting part 12 rotates relative to the test tube rack 11, and the test tube 41 is in a vertical position. The mounting part 12 continues to move upward, and the test tube 41 moves to the sample loading position. The sample aspirating needle 42 enters the test tube 41 along the vertical direction to absorb the sample to be tested. It can be understood that the sample aspirating needle 42 does not need to move during this process.

[0041] like Figure 2 and Figure 5 As shown, the drive assembly 20 includes a drive member 21 and a transmission member 22. The drive member 21 and the transmission member 22 are in transmission connection, and the drive member 21 can drive the transmission member 22 to move. The drive member 21 can be a drive motor. The transmission member 22 is in transmission connection with the test tube assembly 10. When the drive member 21 drives the transmission member 22 to move, the test tube assembly 10 moves along with the transmission member 22, that is, the test tube assembly 10 moves up and down in the height direction so that the test tube assembly 10 has a sample loading position and a pick-up and placement position. The transmission member 22 can be a conveyor belt, and the test tube assembly 10 is connected to the conveyor belt. When the conveyor belt moves, the test tube assembly 10 can move in the height direction.

[0042] Reference Figure 1-Figure 5 As shown, the test tube loading device 100 further includes a trigger member 31 disposed below the mounting member 12. When the drive assembly 20 drives the test tube assembly 10 downward until the mounting member 12 abuts the trigger member 31, the mounting member 12 can rotate relative to the test tube rack 11 to position the test tube assembly 10 in a pick-up and placement position. Specifically, the trigger member 31 can rotate the mounting member 12 relative to the test tube rack 11. When the mounting member 12 rotates to an inclined position, the test tube assembly 10 has a pick-up and placement position. When a test tube 41 is placed in the mounting member 12, the test tube 41 in the mounting member 12 is tilted, making it easier for an operator to remove the test tube 41 from the mounting member 12. Alternatively, when no test tube 41 is placed in the mounting member 12, the space within the mounting member 12 for accommodating the test tube 41 is tilted, making it easier for an operator to place the test tube 41 in the mounting member 12.

[0043] Thus, the trigger member 31 cooperates with the mounting member 12 to tilt the mounting member 12, making it easier to take and place the test tube 41. Compared with the motor drive in the prior art, the test tube loading device 100 of the present invention has a simplified structure, simple control, and saves costs; and it occupies a small volume.

[0044] like Figure 1 As shown, when the driving assembly 20 drives the test tube assembly 10 to move upward to the sample loading position, the aspirator needle 42 enters the test tube 41. When reaching the sample loading position, the aspirator needle 42 aspirates the sample to be tested.

[0045] according to Figure 2-Figure 4 As shown, after the sampling needle 42 completes sampling, the drive assembly 20 drives the test tube assembly 10 to move downward, and the test tube assembly 10 moves downward until the mounting member 12 abuts against the trigger member 31, and when the test tube assembly 10 moves downward to the extreme position, under the action of the trigger member 31, the mounting member 12 rotates relative to the test tube rack 11, so that the test tube 41 is placed at an angle, that is, the test tube assembly 10 is in a pick-up and placement position, which is convenient for the operator to pick up the test tube 41 from which sampling has been completed.

[0046] Furthermore, when the test tube assembly 10 is in the pick-up and placement position, the operator can place the test tube 41 in the mounting member 12 ; the drive assembly 20 then drives the test tube assembly 10 upward to the sample loading position, facilitating the sample aspiration needle 42 to take samples.

[0047] Thus, the driving assembly 20 drives the test tube assembly 10 to move upward in the height direction so that the test tube assembly 10 has a sample loading position; when the driving assembly 20 drives the test tube assembly 10 to move downward until the mounting member 12 abuts against the trigger member 31, the mounting member 12 can be rotated relative to the test tube rack 11 so that the test tube assembly 10 has a pick-up and placement position, which is convenient for the operator to pick up and place the test tube, with a simple structure and high reliability.

[0048] like Figure 1 As shown, the upper surface of the trigger member 31 is provided with an inclined surface 311, which selectively abuts against the mounting member 12 to allow the mounting member 12 to rotate relative to the test tube rack 11. Specifically, the upper surface of the trigger member 31 is an inclined surface 311, and the inclined surface 311 gradually extends from top to bottom in a direction away from the test tube rack 11. When the inclined surface 311 is in contact with the lower surface of the mounting member 12, the test tube assembly 10 is in a pick-up and placement position. When the drive assembly 20 drives the test tube assembly 10 to move upward, the inclined surface 311 does not abut against the mounting member 12; when the drive assembly 20 drives the test tube assembly 10 downward until the mounting member 12 abuts against the trigger member 31, and when the test tube assembly 10 moves downward to the extreme position, the inclined surface 311 is in contact with the lower surface of the mounting member 12.

[0049] like Figure 4 and Figure 5 As shown, the test tube loading device 100 further includes: a reset member 13, which is disposed on the test tube rack 11 and is in transmission connection with the mounting member 12, so that when the test tube assembly 10 moves upward from the pick-up and placement position, the mounting member 12 is driven to rotate relative to the test tube rack 11 to reset, so that the test tube 41 and the aspiration needle 42 are arranged opposite each other. Specifically, the reset member 13 is in transmission connection with the mounting member 12, and the reset member 13 can drive the mounting member 12 to rotate relative to the test tube rack 11 to reset. During the process of switching the test tube assembly 10 from the pick-up and placement position to the loading position, when the drive assembly 20 drives the test tube assembly 10 to move upward from the pick-up and placement position, the reset member 13 drives the mounting member 12 to rotate relative to the test tube rack 11, so that the lower surface of the mounting member 12 contacts the test tube rack 11, ensuring that the sample to be tested in the test tube 41 is in a horizontal position in the mounting member 12, that is, the test tube 41 is in a vertical position.

[0050] Moreover, the test tube 41 is located directly below the sample aspirating needle 42 . When the mounting member 12 moves upward, the sample aspirating needle 42 penetrates into the test tube 41 . When the sample aspirating needle 42 reaches the sample loading position, it aspirates the sample to be tested.

[0051] The reset element 13 is an elastic element, for example, a torsion spring or a tension spring.

[0052] In some embodiments, the reset member 13 can be a tension spring. One end of the tension spring is connected to the second plate 113, and the other end of the tension spring is connected to the mounting member 12. When the trigger member 31 abuts the mounting member 12, the mounting member 12 rotates relative to the test tube rack 11, and the tension spring is stretched, which exerts a pulling force on the mounting member 12. When the test tube 41 is placed or removed, the drive assembly 20 drives the test tube assembly 10 upward, and the mounting member 12 is reset under the tension of the tension spring, so that the test tube 41 is in a vertical position and is directly opposite the sample aspiration needle 42 above.

[0053] In some other embodiments, the reset member 13 may be a torsion spring.

[0054] Furthermore, the test tube loading device 100 further includes a rotating member 14, which is fixedly connected to the mounting member 12 and rotatably connected to the test tube rack 11. A resetting member 13 is sleeved around the outer periphery of the rotating member 14. Specifically, the rotating member 14 connects the mounting member 12 and the test tube rack 11, allowing the mounting member 12 to rotate relative to the test tube rack 11. The test tube assembly 10 thus has a placement position and a loading position, facilitating the operator's placement of the test tube 41 and the loading of the sample by the aspirator 42.

[0055] In some optional embodiments, the rotating member 14 may be a rotating pin, which passes through the mounting member 12 , and both ends of the rotating pin are rotatably connected to the test tube rack 11 .

[0056] In some optional embodiments, two first rotating shaft portions are provided on both sides of the mounting member 12, one end of the first rotating shaft portion is connected to the mounting member 12, and the other end of the first rotating shaft portion is rotatably connected to the test tube rack 12, so that the mounting member 12 is rotatably connected to the test tube rack 12.

[0057] When the return member 13 is a torsion spring, there is at least one torsion spring, which can be mounted around the outer periphery of at least one first rotating shaft portion. The first rotating shaft portion connects the mounting member 12 and the test tube rack 11. Driven by the first rotating shaft portion and the torsion spring, the mounting member 12 can rotate relative to the test tube rack 11. The test tube assembly 10 thus has a placement position and a sample loading position, facilitating the operator's placement of the test tube 41 and sample loading with the sample aspirator 42.

[0058] In some optional embodiments, the test tube rack 11 is provided with two second rotating shaft portions, one end of the second rotating shaft portion is fixedly connected to the test tube rack 11, and the other end of the second rotating shaft portion is rotatably connected to the mounting member 12, so that the mounting member 12 is rotatably connected to the test tube rack 12.

[0059] When the return member 13 is a torsion spring, there is at least one torsion spring, which can be mounted around the outer periphery of at least one second rotating shaft portion. The second rotating shaft portion connects the mounting member 12 and the test tube rack 11. The second rotating shaft portion and the torsion spring allow the mounting member 12 to rotate relative to the test tube rack 11. The test tube assembly 10 thus has a placement position and a sample loading position, facilitating the operator's placement of the test tube 41 and sample loading with the sample aspirator 42.

[0060] like Figure 4 and Figure 5 As shown, when the reset member 13 can be a torsion spring, a limiting portion 111 is provided on the test tube rack 11. One end of the reset member 13 engages with the limiting portion 111, and the other end engages with the mounting member 12. Specifically, the torsion spring is sleeved around the outer periphery of the rotating member 14, the first rotating shaft portion, or the second rotating shaft portion. One side of the mounting member 12 corresponds to the trigger member 31. When the mounting member 12 abuts the trigger member 31, the trigger member 31 activates the mounting member 12 so that the side opposite the trigger member 31 moves upward, while the other side opposite the mounting member 12 moves downward. One end of the torsion spring abuts the lower end of the side of the mounting member 12 that moves downward, while the other end of the torsion spring is limited by the upper end of the limiting portion 111. Thus, under the action of the torsion spring, the mounting member 12 rotates upward relative to the test tube rack 11, and the lower surface of the mounting member 12 remains horizontal, ensuring that the sample to be tested in the test tube 41 is in a horizontal position within the mounting member 12.

[0061] according to Figure 3 As shown, the test tube rack 11 includes a first plate body 112 and a second plate body 113 . The first plate body 112 and the second plate body 113 are connected to each other, and the first plate body 112 is rotatably connected to the mounting member 12 .

[0062] In some embodiments, the first plate 112 is in driving connection with the drive assembly 20, so that the test tube rack 11 moves up and down in the height direction under the drive of the drive assembly 20. The second plate 113 is fixedly connected to the first plate 112, and the mounting member 12 is rotatably connected to the second plate 113, so that the test tube assembly 10 has a pick-up and placement position, which facilitates the removal or placement of the test tube 41.

[0063] In other embodiments, the second plate 113 can be in driving connection with the drive assembly 20, so that the test tube rack 11 moves up and down in the height direction under the drive of the drive assembly 20. The second plate 113 is fixedly connected to the first plate 112, and the mounting member 12 is rotatably connected to the second plate 113, so that the test tube assembly 10 has a pick-up and placement position, which facilitates the removal or placement of the test tube 41.

[0064] like Figure 5 As shown, the second plate 113 includes a first portion 114, a second portion 115, and a third portion 116. The first portion 114 and the second portion 115 are connected by the third portion 116. The mounting member 12 is rotatably connected to the first portion 114 and the second portion 115. When the test tube assembly 10 moves in the height direction, the third portion 116 abuts against the lower surface of the mounting member 12. Specifically, the first portion 114 and the second portion 115 are disposed on either side of the third portion 116. The third portion 116 is connected between the first portion 114 and the second portion 115. The first portion 114 and the second portion 115 are disposed opposite each other. A stopper 111 is provided on the side of the first portion 114 facing the second portion 115, and a stopper 111 is provided on the side of the second portion 115 facing the first portion 114.

[0065] The reset member 13 cooperates with the limiting portion 111 to drive the mounting member 12 to rotate relative to the test tube rack 11 so as to reset the mounting member 12 and ensure that the test tube 41 in the mounting member 12 is in a vertical position.

[0066] In some embodiments, there can be one reset member 13 and one limit portion 111. One reset member 13 and one limit portion cooperate with each other so that the mounting member 12 can rotate relative to the test tube rack 11 to reset the mounting member 12 and ensure that the test tube 41 in the mounting member 12 is in a vertical position.

[0067] In some other embodiments, there may be two reset members 13 and two limit portions 111. The two reset members 13 respectively cooperate with the two limit portions 111 to drive the mounting member 12 to rotate relative to the test tube rack 11, so as to reset the mounting member 12 and ensure that the test tube 41 in the mounting member 12 is in a vertical position.

[0068] Combine Figure 1As shown, when the driving assembly 20 drives the test tube assembly 10 to gradually move upward from the pick-up and placement position, the reset member 13 drives the mounting member 12 to rotate to reset, and the lower surface of the mounting member 12 abuts against the third part 116, ensuring that the test tube 41 in the mounting member 12 is in a vertical state, so that the sample aspirating needle 42 can enter the test tube 41 to absorb the sample to be tested as the test tube 41 moves upward.

[0069] Furthermore, a through hole 117 may be formed in the third portion 116, and the trigger member 31 selectively passes through the through hole 117 to abut against the mounting member 12. Specifically, when the drive assembly 20 drives the test tube assembly 10 downward, the trigger member 31 passes through the through hole 117 and abuts against the lower surface of the mounting member 12, causing the mounting member 12 to rotate relative to the test tube rack 11, gradually tilting the test tube 41. When the test tube assembly 10 moves downward to the extreme position, the test tube assembly 10 is in the pick-up and placement position, allowing the operator to pick up and place the test tube 41.

[0070] During the process of switching the test tube assembly 10 from the holding position to the loading position, the driving assembly 20 drives the test tube assembly 10 to move upward, the trigger member 31 gradually disengages from the mounting member 12, and the through hole 117 gradually moves away from the trigger member 31 until the test tube assembly 10 moves to the loading position.

[0071] like Figure 5 As shown, the trigger member 31 includes a trigger portion 312 with an inclined surface 311 disposed thereon. The trigger portion 312 protrudes upward and selectively passes through the through-hole 117, allowing the inclined surface 311 to abut against the mounting member 12. Specifically, the inclined surface 311 extends downward, gradually away from the test tube rack 11. When the drive assembly 20 drives the test tube assembly 10 upward, the trigger portion 312 gradually moves away from the through-hole 117, and the inclined surface 311 no longer abuts against the mounting member 12. When the test tube assembly 10 moves downward until the trigger portion 312 passes through the through-hole 117 and the inclined surface 311 abuts against the lower surface of the mounting member 12, the test tube assembly 10 is in the placement position. At this point, the mounting member 12 can rotate relative to the test tube rack 11, causing the test tube 41 within the mounting member 12 to rotate relative to the test tube rack 11, tilting the test tube 41 outward, allowing an operator to pick up or place the test tube 41 in the mounting member 12.

[0072] Combine Figure 1-Figure 5As shown, the mounting member 12 includes a base plate 121 and a sleeve 122. The base plate 121 is rotatably connected to the test tube rack 11, and the sleeve 122 is connected to the base plate 121. The sleeve 122 is used to accommodate the test tube 41. Specifically, the sleeve 122 is fixedly connected to the base plate 121 so that the sleeve 122 rotates with the base plate 121. The sleeve 122 has a receiving space 123 formed therein for accommodating the test tube 41. The test tube 41 can be placed at an angle within the sleeve, making it easier for the operator to handle it. The lower surface of the bottom plate 121 selectively abuts against the test tube rack 11. When the test tube assembly 10 switches from the pick-up and placement position to the sample loading position, the test tube assembly 10 moves upward from the pick-up and placement position. After the reset member 13 drives the mounting member 12 to rotate to reset, the lower surface of the bottom plate 121 abuts against the third part 116; ensuring that the test tube 41 in the mounting member 12 is in a vertical state, it is convenient for the sample aspiration needle 42 to enter the test tube 41 from the mouth of the test tube 41 to absorb the sample to be tested as the test tube 41 moves upward.

[0073] like Figure 1-Figure 5 As shown, the test tube sample loading device 100 further includes a sample aspirating needle 42. A swab 15 is provided on the first plate 113, and the sample aspirating needle 42 at least partially penetrates the swab 15. Specifically, the sample aspirating needle 42 is located above the test tube assembly 10. The test tube sample loading device 100 includes a bracket 43, the trigger member 31 is connected to the bracket 43, and a mounting plate 44 is connected to the upper side of the bracket 43. The sample aspirating needle 42 is disposed on the mounting plate 44. The sample aspirating needle 42 extends in a height direction. The lower end of the sample aspirating needle 42 passes through the mounting plate 44 and protrudes from the lower surface of the mounting plate 44, facilitating the sample aspirating needle 42 to extend into the interior of the test tube 41 for sampling.

[0074] like Figure 1-Figure 5 As shown, a swab 15 is connected to the top of the first plate 112. The lower end of the sample aspirating needle 42 passes through the swab 15. As the test tube assembly 10 moves in the vertical direction, the swab 15 moves up and down relative to the sample aspirating needle 42 to clean the surface of or the reagent inside the sample aspirating needle 42. Furthermore, during the movement of the test tube assembly 10, at least a portion of the sample aspirating needle 42 remains inserted through the swab 15, ensuring a secure fit between the sample aspirating needle 42 and the swab 15.

[0075] like Figure 4 As shown, the swab 15 may be provided with a liquid inlet 151 and a liquid outlet 152 . The cleaning liquid enters the swab 15 from the liquid inlet 151 to clean the sample aspirating needle 42 and then flows out from the liquid outlet 152 .

[0076] In some embodiments, the length of the sample aspirating needle 42 protruding from the lower surface of the upper mounting position is L, where L satisfies the relationship: 85 mm ≤ L ≤ 130 mm. Thus, the length of the sample aspirating needle 42 protruding from the lower surface of the mounting plate 44 is between 85 mm and 130 mm. This length ensures sufficient sampling, meets the requirements of sample analysis, and prevents the test tube loading device 100 from being too large.

[0077] Furthermore, the distance H between the top surface of swab 15 and the bottom of test tube 41 within mounting member 12 satisfies the relationship: 0 ≤ HL ≤ 2 mm. Specifically, when test tube 41 is in the sample loading position, the distance between the top surface of swab 15 and the bottom of test tube 41 is greater than the length of sample aspirator 42 protruding from the bottom surface of mounting plate 44, with the difference between the two being between 0 and 2 mm. This ensures that sample aspirator 42 can penetrate deep enough into test tube 41 for adequate sampling. A gap is also reserved to prevent interference between sample aspirator 42 and the bottom of test tube 41.

[0078] In this way, during the movement of the test tube assembly, the lower end of the sample aspirator 42 can basically extend into the bottom of the test tube 41, ensuring sufficient absorption of the sample to be tested in the test tube 41 and reducing the amount of sample required for testing; at the same time, it prevents the sample aspirator 42 from being too long and causing it to hit the bottom of the test tube 41 during movement.

[0079] according to Figure 6 As shown, the particle analyzer 1000 according to the second embodiment of the present invention adopts the above-mentioned test tube loading device 100 for sampling. Specifically, the test tube loading device 100 is set at the working position of the particle analyzer 1000 to facilitate the operator to take and place the test tube 41.

[0080] like Figure 6 As shown, particle analyzer 1000 includes a housing 200, with test tube loading device 100 located within housing 200. Housing 200 is provided with an opening 210. When test tube assembly 10 is moved downward to the placement position, it at least partially extends out of housing 200. In other words, when test tube assembly 10 is moved downward to the placement position, mounting member 12 partially extends out of housing 200, making it easier for an operator to place test tube 41 through opening 210.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0082] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0083] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A test tube sample loading device, characterized in that: include: A test tube assembly (10) comprises: a test tube rack (11) and a mounting member (12), wherein the mounting member (12) is rotatably connected to the test tube rack (11), and the mounting member (12) is used to place a test tube (41); a drive assembly (20), the drive assembly (20) being in driving connection with the test tube assembly (10) and being used to drive the test tube assembly (10) to move up and down in a height direction so that the test tube assembly (10) has a sample loading position and a pick-up and place position; A trigger member (31) is provided below the mounting member (12). When the driving assembly (20) drives the test tube assembly (10) to move downward until the mounting member (12) abuts against the trigger member (31), the mounting member (12) can rotate relative to the test tube rack (11) so that the test tube assembly (10) has a pick-up and placement position.

2. The test tube sample loading device according to claim 1, characterized in that: The upper surface of the trigger member (31) is provided with an inclined surface (311), and the inclined surface (311) selectively abuts against the mounting member (12) to enable the mounting member (12) to rotate relative to the test tube rack (11).

3. The test tube sample loading device according to claim 1, characterized in that: Also includes: A reset member (13) is provided on the test tube rack (11) and is in transmission connection with the mounting member (12) so as to drive the mounting member (12) to rotate relative to the test tube rack (11) to reset when the test tube assembly (10) moves upward from a pick-up position.

4. The test tube sample loading device according to claim 3, characterized in that: The reset member (13) is an elastic member.

5. The test tube sample loading device according to claim 1, characterized in that: The test tube rack (11) comprises a first plate (112) and a second plate (113), wherein the first plate (112) and the second plate (113) are connected, and the second plate (113) is rotatably connected to the mounting member (12).

6. The test tube sample loading device according to claim 5, characterized in that: The second plate (113) includes: a first part (114), a second part (115) and a third part (116); the first part (114) and the second part (115) are connected via the third part (116); the mounting member (12) is rotatably connected to the first part (114) and the second part (115); when the test tube assembly (10) moves in the height direction, the third part (116) abuts against the lower surface of the mounting member (12).

7. The test tube sample loading device according to claim 6, characterized in that: A through hole (117) is provided on the third portion (116), and the trigger member (31) selectively passes through the through hole (117) to abut against the mounting member (12).

8. The test tube sample loading device according to claim 1, characterized in that: The mounting member (12) comprises a base plate (121) and a sleeve (122), wherein the base plate (121) is rotatably connected to the test tube rack (11), and the sleeve (122) is connected to the base plate (121), and the sleeve (122) is used to accommodate the test tube (41).

9. The test tube sample loading device according to claim 5, characterized in that: The test tube sample loading device (100) further comprises: a sample aspirating needle (42); a swab (15) is provided on the first plate (112); and the sample aspirating needle (42) at least partially penetrates the swab (15).

10. The test tube sample loading device according to claim 9, characterized in that: The length of the sample suction needle (42) exposed from the lower surface of the upper end installation position is L, and L satisfies the relationship: 85mm≤L≤130mm.

11. The test tube sample loading device according to claim 10, characterized in that: The distance between the upper surface of the swab (15) and the bottom of the test tube (41) in the mounting member (12) is H, and H and L satisfy the relationship: 0≤HL≤2mm.

12. A particle analyzer, characterized in that: include: The test tube sample loading device (100) according to any one of claims 1 to 11.

13. The particle analyzer according to claim 12, wherein include: The shell (200) is provided with an opening (210), and the test tube assembly (10) at least partially extends out of the shell (200) when the test tube assembly (10) moves downward to the placement position.

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