Automatic plasma centrifuging and sampling equipment

Abstract

The invention relates to automatic plasma centrifuging and sampling equipment which comprises a sample placing base, a sample feeding device, a centrifuging device and a sampling device, the sample placing base and the centrifuging device are installed on the two sides of the sample feeding device respectively, and the sampling device is installed on one side of the centrifuging device. The sampling device comprises a sampling pipe storage box, a sampling pipe feeding mechanism, a sampling mechanism and a sampling pipe waste box, the sampling mechanism is installed on one side of the centrifugal device, the sampling pipe feeding mechanism is arranged close to the sampling mechanism, the sampling pipe storage box is installed on one side of the sampling pipe feeding mechanism, and the sampling pipe waste box is installed on one side of the sampling mechanism; according to the automatic plasma centrifuging and sampling equipment, the sample test tubes are automatically placed in the centrifuging device through the sample feeding device for centrifugal layering, and then the layered blood samples are sampled through the sampling device, so that full-automatic sampling is realized, an operator does not need to operate, the samples are prevented from being polluted, and the effectiveness of inspection is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, and in particular to an automatic plasma centrifugation and sampling device. Background Art

[0002] Blood testing is the most common testing method in biomedicine, clinical diagnosis, and health quarantine diagnosis. In blood testing, separating plasma from whole blood drawn from patients is also an essential part of the blood testing process. Nowadays, most hospitals and laboratories use a whole blood separation method that uses separation gel coagulation blood collection tubes, which uses low-speed centrifugation to separate red blood cells and serum into layers on both sides of the separation gel due to density differences. The blood collection tube contains coagulation components and separation gel. The coagulation components can promote the coagulation process, causing red blood cells and coagulation proteins to aggregate and be easier to centrifuge.

[0003] Currently, plasma separation is performed using a special centrifuge, which requires an operator to place the blood to be separated into the centrifuge. After centrifugation, the operator takes out the separated plasma and places it into the testing instrument. This requires a lot of manual operation as a whole, which is not conducive to instrument automation. Summary of the invention

[0004] The main purpose of the present invention is to provide an automatic plasma centrifugation and sampling device to solve the above technical problems and can automatically sample blood samples after centrifugation.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A plasma automatic centrifuge and sampling device, comprising a sample placement seat, a sample loading device, a centrifuge and a sampling device, wherein the sample placement seat and the centrifuge are respectively installed on both sides of the sample loading device, and the sampling device is installed on one side of the centrifuge. The sampling device comprises a sampling tube storage box, a sampling tube loading mechanism, a sampling mechanism and a sampling tube waste box, wherein the sampling mechanism is installed on one side of the centrifuge, the sampling tube loading mechanism is arranged close to the sampling mechanism, and the sampling tube storage box is installed on the sampling tube loading mechanism. The sampling solid waste box is installed on one side of the sampling mechanism, the sample tube is placed on the sample placement seat, the sample loading device clamps the sample tube to the centrifugal device, the centrifugal device centrifuges and layers the sample, the sampling tube loading mechanism adsorbs the sampling tube in the sampling tube storage box, and loads the sampling tube to the sampling mechanism, the sampling mechanism samples red blood cells or serum in the centrifugal device, and stores the centrifuged sample, and after sampling, the sampling mechanism places the sampling tube in the sampling tube waste box.

[0007] As a preferred technical solution, the sample loading device includes a sample loading translation mechanism, a sample loading longitudinal movement mechanism and a sample loading clamping mechanism. The sample loading translation mechanism drives the sample loading longitudinal movement mechanism to move, the sample loading longitudinal movement mechanism drives the sample loading clamping mechanism to move, and the sample loading clamping mechanism clamps the sample test tube.

[0008] As a preferred technical solution, the centrifugal device includes a centrifugal box, a centrifugal mechanism and a centrifugal driving mechanism. The centrifugal mechanism and the centrifugal driving mechanism are installed in the centrifugal box, and the centrifugal driving mechanism drives the centrifugal mechanism to rotate.

[0009] As a preferred technical solution, the centrifugal mechanism includes a rotating rod and a fixed structure, the fixed structure is installed on the rotating rod in an orderly manner, the fixed structure includes a fixed rod and a fixed ring, one end of the fixed rod is fixed on the rotating rod, and the fixed ring is obliquely fixed to the other end of the fixed rod, and the inner surface of the fixed ring matches the outer surface of the sample tube.

[0010] As a preferred technical solution, the sampling tube loading mechanism includes a sampling tube loading translation assembly, a sampling tube loading longitudinal movement assembly and a sampling tube adsorption block. The sampling tube loading translation assembly drives the sampling tube loading longitudinal movement assembly to move, and the sampling tube loading longitudinal movement assembly drives the sampling tube adsorption block to move.

[0011] As a preferred technical solution, an adsorption groove is provided on the sampling tube adsorption block, and adsorption holes are evenly distributed on the inner surface of the adsorption groove. The shape of the adsorption groove matches the outer surface of the sampling tube.

[0012] As a preferred technical solution, the sampling mechanism includes a sampling X-axis drive component, a sampling Y-axis drive component, a sampling Z-axis drive component, a sampling rotation component and a sampling clamping component. The sampling X-axis drive component drives the sampling Y-axis drive component to move along the X-axis direction, the sampling Y-axis drive component drives the sampling Z-axis drive component to move along the Y-axis direction, the sampling Z-axis drive component drives the sampling rotation component to move along the Z-axis direction, and the sampling rotation component drives the sampling clamping component to rotate.

[0013] As a preferred technical solution, the sampling rotating assembly includes a sampling rotating cylinder and a sampling rotating plate, the sampling clamping assembly is installed on the sampling rotating plate, and the sampling rotating cylinder drives the sampling rotating plate to rotate.

[0014] As a preferred technical solution, the sampling clamping assembly includes a clamping structure and a clamping motor, the clamping structure is installed on the sampling rotating plate, the clamping motor drives the clamping structure to move, and the clamping structure is connected to an air pump.

[0015] As a preferred technical solution, the clamping structure includes a clamping base, a clamping guide seat, a clamping rotating seat, a clamping bearing and a clamping block. The clamping base is fixed on the sampling rotating plate, the clamping rotating seat is installed on the clamping base through the clamping bearing, the clamping rotating seat is fixed to the output end of the clamping motor, the clamping guide seat is fixed to the clamping base, and three clamping blocks are installed on the clamping guide seat.

[0016] The beneficial effects of the present invention are as follows: the above-mentioned automatic plasma centrifugation and sampling equipment automatically places the sample tube in the centrifugal device for centrifugal stratification through the sample loading device, and then samples the blood sample after stratification through the sampling device, thereby realizing fully automatic sampling, without the need for operator operation, avoiding sample contamination, and ensuring the effectiveness of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the automatic plasma centrifugation and sampling device involved in the present invention;

[0018] Figure 2 It is a structural schematic diagram of a sample loading device according to the present invention;

[0019] Figure 3 It is a structural schematic diagram of the centrifugal device involved in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the centrifugal mechanism involved in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the sampling tube feeding mechanism involved in the present invention;

[0022] Figure 6 It is a structural schematic diagram of the sampling tube adsorption block according to the present invention;

[0023] Figure 7 It is a structural schematic diagram of the sampling mechanism involved in the present invention;

[0024] Figure 8 It is an exploded schematic diagram of the clamping structure involved in the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] like Figure 1As shown, a plasma automatic centrifugation and sampling device includes a sample placement seat 1, a sample loading device 2, a centrifugal device 3 and a sampling device. The sample placement seat 1 and the centrifugal device 3 are respectively installed on both sides of the sample loading device 2, and the sampling device is installed on one side of the centrifugal device 3. The sampling device includes a sampling tube storage box 4, a sampling tube loading mechanism 5, a sampling mechanism 6 and a sampling tube waste box 7. The sampling mechanism 6 is installed on one side of the centrifugal device 3, the sampling tube loading mechanism 5 is arranged close to the sampling mechanism 6, the sampling tube storage box 4 is installed on one side of the sampling tube loading mechanism 5, and the sampling solid waste box 7 is installed on one side of the sampling mechanism 6. A placement slot 11 is provided on the sample placement box 1, and a sample test tube can be placed in the placement slot 11. The sample loading device 2 clamps the sample test tube on the placement slot 11 to the centrifugal device 3, and the centrifugal device 3 The sample is centrifuged and layered to form a red blood cell layer and a serum layer. The sampling tube loading mechanism 5 adsorbs the sampling tube in the sampling tube storage box 4 and loads the sampling tube to the sampling mechanism 6. The sampling mechanism 6 samples the red blood cell layer or the serum layer in the centrifugal device 3, and stores the centrifuged sample in a glass slide or a culture dish or other testing vessel. After the sampling is completed, the sampling mechanism 6 places the sampling tube in the sampling tube waste box 7. In this embodiment, the sampling tube storage box 4 and the sampling tube waste box 7 are box structures with upper openings, so that the sampling tube loading mechanism 5 can take the sample and the sampling mechanism 6 can discharge the sample. The sample tube is a conventional blood sample tube, which is composed of a test tube and a sealing cover that seals the test tube mouth. The structure of the sampling tube is a tube structure with a sharp end, which can penetrate the sealing cover of the sample tube to sample the layered red blood cell layer or the serum layer.

[0027] like Figure 1 and Figure 2 As shown, the sample loading mechanism 2 includes a sample loading bracket 21, a sample loading translation mechanism 22, a sample loading longitudinal movement mechanism 23 and a sample loading clamping mechanism 24. The sample loading translation mechanism 22 is installed on the sample loading bracket 21. The sample loading translation mechanism 22 drives the sample loading longitudinal movement mechanism 23 to move. The sample loading longitudinal movement mechanism 23 drives the sample loading clamping mechanism 24 to rise and fall. The sample loading clamping mechanism 24 drives to clamp the sample test tube to move the sample test tube from the sample placement seat 1 to the centrifuge device 3 to centrifuge the sample test tube.

[0028] The sample loading translation mechanism 22 includes a sample loading motor 221, a sample loading driving wheel 222, a sample loading driven wheel 223, a sample loading belt 224, a sample loading guide rail 225 and a sample loading base 226. The sample loading motor 221 and the sample loading guide rail 225 are installed on the sample loading base 226, and the sample loading driving wheel 222 and the sample loading driven wheel 223 are rotatably installed at the two ends of the sample loading base 226 respectively. 222 is connected to the sample loading driven wheel 223 through the sample loading belt 224, the sample loading longitudinal movement mechanism 23 is connected to the sample loading belt 224, the sample loading motor 221 drives the sample loading active wheel 222 to rotate, drives the sample loading belt 224 to transmit between the sample loading active wheel 222 and the sample loading driven wheel 223, drives the sample loading longitudinal movement mechanism 23 to move along the sample loading guide rail 225, so as to move between the sample placement seat 1 and the centrifuge device 3.

[0029] The sample loading longitudinal movement mechanism 23 includes a sample loading moving seat 231, a sample loading lifting seat 234, a sample loading lifting cylinder 232 and a sample loading lifting guide rail 233. The sample loading lifting cylinder 232 and the sample loading lifting guide rail 233 are installed on the sample loading moving seat 231. The sample loading lifting cylinder 232 drives the sample loading lifting seat 234 to move along the sample loading lifting guide rail 233. The sample loading clamping mechanism 24 is installed on the sample loading lifting seat 234 to drive the sample loading clamping mechanism 24 to move longitudinally.

[0030] The sample loading and clamping mechanism 24 includes a sample loading and clamping cylinder 241 and a sample loading and clamping block 242. The sample loading and clamping cylinder 241 drives the two sample loading and clamping blocks 242 to move relative to each other. The gap formed when the two sample loading and clamping blocks 242 are close to each other matches the outer surface of the sample tube to firmly clamp the sample tube. The clamping part is made of flexible material, such as silicone, to avoid damage to the sample tube and cause sample leakage and contamination.

[0031] like Figure 3 and Figure 4 As shown, the centrifugal device 3 includes a centrifugal box 31, a centrifugal mechanism 32 and a centrifugal driving mechanism 33. The centrifugal mechanism 32 and the centrifugal driving mechanism 33 are installed in the centrifugal box 31. The centrifugal driving mechanism 33 drives the centrifugal mechanism 32 to rotate. The sample loading mechanism 2 clamps the sample test tube and places it on the centrifugal mechanism 32. The centrifugal driving mechanism 33 drives the centrifugal mechanism 32 to rotate, so that the blood sample in the sample test tube is centrifugally layered.

[0032] The centrifugal mechanism 32 includes a rotating rod 321 and a fixed structure 322. The fixed structure 322 is installed on the rotating rod 321 in an orderly manner. The fixed structure 322 includes a fixed rod 323 and a fixed ring 324. One end of the fixed rod 323 is fixed on the rotating rod 321, and the fixed ring 324 is fixed at an angle on the other end of the fixed rod 323 to generate centrifugal force during rotation. Since red blood cells are heavier, they sink during rotation, while serum is lighter and floats to generate centrifugal stratification. The inner surface of the fixed ring 324 matches the outer surface of the sample tube to fix the sample tube and prevent the sample tube from detaching from the fixed structure 322 during rotation and separation.

[0033] The centrifugal driving mechanism 33 includes a centrifugal driving motor 331, a centrifugal driving wheel 332, a centrifugal belt 333 and a centrifugal driven wheel 334. The centrifugal driven wheel 334 is installed at the lower end of the rotating rod 321. The centrifugal driving motor 331 is installed on the centrifugal box 31. The centrifugal driving wheel 332 is connected to the centrifugal driven wheel 334 through the centrifugal belt 333. The centrifugal driving motor 331 drives the centrifugal driving wheel 332 to rotate, and drives the centrifugal driven wheel 334 to rotate through the centrifugal belt 333, thereby rotating the rotating rod 321 to centrifuge the sample test tube.

[0034] like Figure 1 , Figure 5 and Figure 6 As shown, the sampling tube loading mechanism 5 includes a sampling tube loading bracket 51, a sampling tube loading translation assembly 52, a sampling tube loading longitudinal movement assembly 53 and a sampling tube adsorption block 54. The sampling tube loading translation assembly 52 is installed on the sampling tube loading bracket 51. The sampling tube loading translation assembly 52 drives the sampling tube loading longitudinal movement assembly 53 to move. The sampling tube loading longitudinal movement assembly 53 drives the sampling tube adsorption block 54 to rise and fall. The sampling tube adsorption block 54 is driven to adsorb the sampling tube in the sampling tube storage box 4 to move the sampling tube from the sampling tube storage box 4 to a position close to the sampling mechanism 6, so as to wait for the sampling mechanism 6 to clamp the sampling tube.

[0035] The sampling tube loading translation assembly 52 includes a sampling tube loading motor 521, a sampling tube loading driving wheel 522, a sampling tube loading driven wheel 523, a sampling tube loading belt 524, a sampling tube loading guide rail 525 and a sampling tube loading base 526. The sampling tube loading motor 521 and the sampling tube loading guide rail 525 are installed on the sampling tube loading base 526, and the sampling tube loading driving wheel 522 and the sampling tube loading driven wheel 523 are rotatably installed at the two ends of the sampling tube loading base 526 respectively. The wheel 522 is connected to the sampling tube loading driven wheel 523 through the sampling tube loading belt 524, the sampling tube loading longitudinal movement assembly 53 is connected to the sampling tube loading belt 524, the sampling tube loading motor 521 drives the sampling tube loading active wheel 522 to rotate, drives the sampling tube loading belt 524 to transmit between the sampling tube loading active wheel 522 and the sampling tube loading driven wheel 523, drives the sampling tube loading longitudinal movement assembly 53 to move along the sampling tube loading guide rail 525, so as to move between the sampling tube storage box 4 and the sampling mechanism 6.

[0036] The sampling tube loading longitudinal movement assembly 53 includes a sampling tube loading moving seat 531, a sampling tube loading lifting seat 534, a sampling tube loading lifting cylinder 532 and a sampling tube loading lifting guide rail 533. The sampling tube loading lifting cylinder 532 and the sampling tube loading lifting guide rail 533 are installed on the sampling tube loading moving seat 531. The sampling tube loading lifting cylinder 532 drives the sampling tube loading lifting seat 534 to move along the sampling tube loading lifting guide rail 533. The sampling tube adsorption block 54 is installed on the sampling tube loading lifting seat 534 to drive the sampling tube adsorption block 54 to move longitudinally.

[0037] An adsorption groove 541 is provided on the sampling tube adsorption block 54, and adsorption holes 542 are evenly distributed on the inner surface of the adsorption groove 541. The shape of the adsorption groove 541 matches the outer surface of the sampling tube. The adsorption holes 542 are connected to negative pressure for adsorbing the sampling tube, and the sharp end of the sampling tube is away from the sampling mechanism 6, so that after the sampling mechanism 6 clamps the sampling tube, the sharp end of the sampling tube is aligned with the sample test tube.

[0038] Please combine Figure 1 , Figure 7 and Figure 8As shown, the sampling mechanism 6 includes a sampling base 61, a sampling X-axis driving assembly 62, a sampling Y-axis driving assembly 63, a sampling Z-axis driving assembly 64, a sampling rotating assembly 65 and a sampling clamping assembly 66. The sampling X-axis driving assembly 62 is installed on the sampling base 61. The sampling X-axis driving assembly 62 drives the sampling Y-axis driving assembly 63 to move along the X-axis direction. The sampling Y-axis driving assembly 63 drives the sampling Z-axis driving assembly 64 to move along the Y-axis direction. The sampling Z-axis driving assembly 64 drives the sampling rotating assembly 65 to move along the Y-axis direction. 5 moves along the Z-axis direction, and the sampling rotating assembly 65 drives the sampling clamping assembly 66 to rotate. In this embodiment, the sampling X-axis driving assembly 62, the sampling Y-axis driving assembly 63 and the sampling Z-axis driving assembly 64 are motor-driven screw rod movable modules. The sampling rotating assembly 65 includes a sampling rotating cylinder 651 and a sampling rotating plate 652. The sampling clamping assembly 66 is installed on the sampling rotating plate 652. The sampling rotating cylinder 651 drives the sampling rotating plate 652 to rotate, thereby driving the sampling clamping assembly 66 to rotate. When it is necessary to clamp the sampling tube, the sampling X-axis driving assembly 62 drives the sampling tube feeding mechanism 5 close to the sampling tube, and the sampling rotating cylinder 651 drives the sampling rotating plate 652 to rotate, thereby driving the sampling clamping assembly 66 to rotate, and the sampling Y-axis driving assembly 63 and the sampling Z-axis driving assembly 64 drive together to make the sampling clamping assembly 66 align with the sampling tube feeding mechanism 5 that has adsorbed the sampling tube, and then the sampling clamping assembly 66 drives to clamp the sampling tube. After the sampling tube is clamped, the sampling rotating cylinder 651 drives the sampling tube. The sampling rotating plate 652 rotates to set the sampling clamping assembly 66 vertically, and the sampling X-axis driving assembly 62, the sampling Y-axis driving assembly 63 and the sampling Z-axis driving assembly 64 are jointly driven to move down to the centrifugal mechanism 3 to take samples. After the sampling is completed and the samples are placed and stored in the inspection vessel, the sampling X-axis driving assembly 62, the sampling Y-axis driving assembly 63 and the sampling Z-axis driving assembly 64 are jointly driven to move down to the sampling tube waste box 7, and the clamping assembly 66 releases the sampling tube to collect the used sampling tube.

[0039] The sampling clamping assembly 66 includes a clamping structure 661, a clamping motor 662 and an air pipe connector 663. The clamping structure 661 is installed on the sampling rotating plate 652. The clamping motor 662 drives the clamping structure 661 to move to clamp or release the sampling tube. The air pipe connector 663 is connected to the clamping structure 661, and the air pipe connector 663 is connected to an air pump. When the clamping structure 661 clamps the sampling tube for sampling, the air pump starts to generate negative pressure to absorb part of the sample. Then the sampling clamping assembly 66 moves close to the test vessel, and the air pump starts to generate positive pressure to push the sample to be stored in the test vessel.

[0040] The clamping structure 663 includes a clamping base 668, a clamping guide seat 665, a clamping rotating seat 666, a clamping bearing 667 and a clamping block 664. The clamping base 668 is fixed on the sampling rotating plate 652. The clamping rotating seat 666 is installed on the clamping base 668 through the clamping bearing 667. The clamping rotating seat 666 is fixed to the output end of the clamping motor 662. The clamping guide seat 665 is fixed to the clamping base 668. Three clamping blocks 664 are installed on the clamping guide seat 665. The clamping block 664 is connected to the clamping rotating seat 666. The clamping motor 662 is driven to drive the clamping rotating seat 666 to rotate, and drive the clamping block 664 to move on the clamping guide seat 665, so that the clamping blocks 664 are close to or away from each other to clamp or release the sampling tube.

[0041] The clamping block 664 includes a clamping portion 6641, a guide portion 6642 and a driving portion 6643. The clamping portion 6641 is installed at the end of the guide portion 6642 and aligned with the center of the clamping guide seat 665. The driving portion 6643 is fixed at the lower end of the guide portion 6642. The clamping guide seat 665 is provided with a guide groove 6651. Three guide grooves 6651 are circumferentially arranged on the clamping guide seat 665. The guide portion 6642 moves along the guide groove 6651. The guide groove 6651 is provided with a driving guide hole 6652. The clamping guide seat 665 is also provided with an air pipe hole 6653 for connecting the air pipe joint 663, so that negative pressure or negative pressure is generated in the clamping base 665. The clamping rotating seat 666 is provided with an arc guide groove 6661. The three arc guide grooves 6661 are used to clamp the rotating seat 666. The axis of the rotating seat 666 is set as the edge circle of the axial clamping rotating seat 666. The driving part 6643 passes through the driving guide hole 6652 and the arc-shaped guide groove 6661. When the clamping rotating seat 666 rotates, the driving part 6643 is driven to approach or move away from the edge of the clamping rotating seat 666, so as to drive the guide part 6642 to move along the guide groove 6651, so that the three clamping parts 6641 are close to or away from each other to clamp or release the sampling tube. The driving guide hole 6652 is used to avoid the driving part 6643.

[0042] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A plasma automatic centrifugation and sampling device, characterized in that: The invention comprises a sample placement seat, a sample loading device, a centrifugal device and a sampling device, wherein the sample placement seat and the centrifugal device are respectively installed on both sides of the sample loading device, and the sampling device is installed on one side of the centrifugal device. The sampling device comprises a sampling tube storage box, a sampling tube loading mechanism, a sampling mechanism and a sampling tube waste box, and the sampling mechanism is installed on one side of the centrifugal device. The sampling tube loading mechanism is arranged close to the sampling mechanism, and the sampling tube storage box is installed on one side of the sampling tube loading mechanism. The sampling solid waste box is installed on one side of the sampling mechanism, the sample test tube is placed on the sample placement seat, the sample loading device clamps the sample test tube to the centrifugal device, the centrifugal device centrifuges and layers the sample, the sampling tube loading mechanism adsorbs the sampling tube in the sampling tube storage box, and loads the sampling tube to the sampling mechanism, the sampling mechanism samples red blood cells or serum in the centrifugal device, and stores the centrifuged sample, and after sampling is completed, the sampling mechanism places the sampling tube in the sampling tube waste box.

2. The plasma automatic centrifugation and sampling device according to claim 1, characterized in that: The sample loading device comprises a sample loading translation mechanism, a sample loading longitudinal movement mechanism and a sample loading clamping mechanism. The sample loading translation mechanism drives the sample loading longitudinal movement mechanism to move, the sample loading longitudinal movement mechanism drives the sample loading clamping mechanism to move, and the sample loading clamping mechanism clamps the sample test tube.

3. The plasma automatic centrifugation and sampling device according to claim 1, characterized in that: The centrifugal device comprises a centrifugal box, a centrifugal mechanism and a centrifugal driving mechanism. The centrifugal mechanism and the centrifugal driving mechanism are installed in the centrifugal box, and the centrifugal driving mechanism drives the centrifugal mechanism to rotate.

4. The plasma automatic centrifugation and sampling device according to claim 3, characterized in that: The centrifugal mechanism includes a rotating rod and a fixed structure, the fixed structure is installed on the rotating rod in an orderly manner, the fixed structure includes a fixed rod and a fixed ring, one end of the fixed rod is fixed on the rotating rod, and the fixed ring is fixed at an angle on the other end of the fixed rod, and the inner surface of the fixed ring matches the outer surface of the sample tube.

5. The plasma automatic centrifugation and sampling device according to claim 1, characterized in that: The sampling tube loading mechanism includes a sampling tube loading translation assembly, a sampling tube loading longitudinal movement assembly and a sampling tube adsorption block. The sampling tube loading translation assembly drives the sampling tube loading longitudinal movement assembly to move, and the sampling tube loading longitudinal movement assembly drives the sampling tube adsorption block to move.

6. The plasma automatic centrifugation and sampling device according to claim 5, characterized in that: The sampling tube adsorption block is provided with an adsorption groove, the inner surface of the adsorption groove is evenly distributed with adsorption holes, and the shape of the adsorption groove matches the outer surface of the sampling tube.

7. The plasma automatic centrifugation and sampling device according to claim 1, characterized in that: The sampling mechanism includes a sampling X-axis driving component, a sampling Y-axis driving component, a sampling Z-axis driving component, a sampling rotating component and a sampling clamping component. The sampling X-axis driving component drives the sampling Y-axis driving component to move along the X-axis direction, the sampling Y-axis driving component drives the sampling Z-axis driving component to move along the Y-axis direction, the sampling Z-axis driving component drives the sampling rotating component to move along the Z-axis direction, and the sampling rotating component drives the sampling clamping component to rotate.

8. The plasma automatic centrifugation and sampling device according to claim 7, characterized in that: The sampling rotating assembly comprises a sampling rotating cylinder and a sampling rotating plate, the sampling clamping assembly is mounted on the sampling rotating plate, and the sampling rotating cylinder drives the sampling rotating plate to rotate.

9. The plasma automatic centrifugation and sampling device according to claim 8, characterized in that: The sampling clamping assembly comprises a clamping structure and a clamping motor. The clamping structure is mounted on the sampling rotating plate. The clamping motor drives the clamping structure to move. The clamping structure is connected to an air pump.

10. The plasma automatic centrifugation and sampling device according to claim 9, characterized in that: The clamping structure includes a clamping base, a clamping guide seat, a clamping rotating seat, a clamping bearing and a clamping block. The clamping base is fixed on the sampling rotating plate, the clamping rotating seat is installed on the clamping base through the clamping bearing, the clamping rotating seat is fixed to the output end of the clamping motor, the clamping guide seat is fixed to the clamping base, and three clamping blocks are installed on the clamping guide seat.

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