Sampling detection device and sampling method for biological sample

Abstract

The invention discloses a sampling detection device and a sampling method of a biological sample, and belongs to the technical field of sampling equipment, the technical key points are that the sampling detection device comprises a first connecting table, the stability of the sampling process is enhanced through an arranged support control mechanism, the loss and pollution of the sample are avoided, the operation threshold is reduced, and the sampling efficiency is improved. By arranging the extension control mechanism and the sampling control mechanism, variables can be well controlled, the credibility of experimental data is improved, meanwhile, batch experimental requirements can be conveniently met, samples obtained after multi-barrel sampling can directly correspond to multi-channel detection equipment, the sample transferring link is reduced, and the sampling efficiency is improved. The efficiency of the whole experiment process is further improved, in addition, the applicability of the device in complex biological experiments is improved through the adjustable extension and synchronous control sampling mode, a scientific and efficient sampling solution is provided for scientific researchers, and the device has the advantages that variable and controllable sampling is achieved, and the sampling efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of sampling equipment, specifically to a sampling and detection device and sampling method for biological samples. Background Technology

[0002] Biological sample collection and testing are core components in modern biomedicine, clinical diagnostics, food safety monitoring, and environmental monitoring. The accuracy and timeliness of the results directly determine the scientific validity and reliability of subsequent decisions. With the ever-increasing demands for precision medicine and rapid screening, biological sample collection and testing technologies (such as blood, saliva, tissue fluid, food residues, and environmental microorganisms) have become key supporting technologies for the development of related fields, attracting widespread attention from global research institutions and industries.

[0003] Chinese patent application document with authorization publication number CN111893031B specifically discloses a support plate, an upper pressure plate, and a extraction mechanism. The support plate is provided with a first elongated hole, and multiple first elongated holes are evenly arranged along the circumference of the support plate. Each first elongated hole corresponds to an extraction mechanism. A slider is provided between the extraction mechanism and the first elongated hole, and the slider is slidably connected to the first elongated hole. The extraction mechanism includes an outer shell, an inner shell, and a piston. The outer shell passes through the slider and is slidably connected to the slider.

[0004] While the aforementioned sampling devices can process biological samples, the core value of biological sample sampling and testing lies in providing objective evidence for subsequent judgments through precise analysis of target components in the samples. This process relies on ensuring "controllable variables" in the sampling process, particularly the two key variables of "sampling time synchronization" and "consistency of position movement distance," which directly determine the comparability of samples and the reliability of test results. However, the aforementioned sampling devices have several drawbacks in actual operation: First, they cannot effectively control variables; the sampling distance adjustment requires manual position adjustment, and fixing the position also requires cumbersome nut fixing, significantly impacting the efficiency of subsequent sampling and testing. Second, when testing samples, multiple pistons need to be operated by a single person multiple times for extraction, or multiple people need to operate a single piston for extraction. This not only makes it difficult to control variables for subsequent testing but also increases labor intensity, greatly reducing sampling efficiency, resulting in poor applicability and failing to meet practical needs.

[0005] Therefore, there is a need to provide a sampling and detection device and sampling method for biological samples, in order to solve the above problems. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sampling and detection device and sampling method for biological samples, which aims to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A biological sample sampling and detection device includes a first connecting platform, a second connecting platform mounted on the first connecting platform, a rotating disk movably mounted on the second connecting platform, and a plurality of sampling cylinders for sampling and detection movably mounted on the outer side of the first connecting platform. Each sampling cylinder is equipped with a sampling needle. The device also includes: An extension control mechanism is installed at the connection between the second connecting platform and the first connecting platform to drive the sampling cylinder to perform extension and retraction. The extension control mechanism includes a drive rod for driving the sampling cylinder to perform extension and retraction. The sampling cylinder is fixedly installed at one end of the drive rod. The drive rod is slidably connected to the second connecting platform through a first sliding rod. A curved groove is provided on the rotating disk for driving the drive rod on the first sliding rod to move. A sampling control mechanism is installed at the connection between the sampling cylinder and the first connecting platform to drive the sampling needle on the sampling cylinder to perform sampling. The sampling control mechanism includes a lifting guide column for liquid aspiration drive. The lifting guide column is fixedly installed at one end of the docking rod, and the other end of the docking rod is connected to a lifting platform for lifting control. A support control mechanism is installed on the first connecting platform and is used to drive the lower part of the first connecting platform to perform support control processing. The support control mechanism includes a first support arm and a second support arm for support connection. The first support arm and the second support arm are rotatably connected by a first connecting shaft. A third support arm for lifting is movably installed at one end of each of the first support arm and the second support arm. A second support base plate for support is provided at the bottom of the third support arm.

[0008] As a further embodiment of the present invention, the extension control mechanism further includes a second sliding rod for guiding the drive rod to extend. The second sliding rod is fixedly installed on the drive rod. A third sliding groove adapted to slide and connect the second sliding rod is provided on the first connecting platform. A first sliding groove adapted to slide and connect the first sliding rod is provided on the second connecting platform. A second sliding groove adapted to slide and connect the drive rod is also provided on the second connecting platform.

[0009] As a further embodiment of the present invention, the extended control mechanism further includes a second motor for driving the rotating disk to rotate. The inner side of the rotating disk is provided with a plurality of internal teeth that mesh with the rotating gear. The rotating gear is rotatably mounted on the second fixed seat through a fourth connecting shaft. The second fixed seat is fixedly mounted on the outer side of the second connecting platform. The fourth connecting shaft is rotatably connected to the output shaft of the second motor through a bevel gear pair. The second motor is fixedly mounted inside the second connecting platform.

[0010] As a further embodiment of the present invention, the sampling control mechanism further includes a piston for liquid extraction. The piston is slidably connected to a fixed plate by a piston rod. The fixed plate is fixedly installed inside the sampling cylinder. The fixed plate has an air guide hole, and one end of the piston rod is fixedly connected to a lifting guide column by a traction rod.

[0011] As a further embodiment of the present invention, the sampling control mechanism further includes a first electric push rod for driving the lifting guide column to make a lifting connection. The lifting guide column is fixedly connected to a connecting sleeve via a docking rod. The connecting sleeve is fixedly installed on the lifting platform via a multi-stage telescopic rod, and the connecting sleeve is slidably connected to a second sliding rod. A fourth sliding groove for adapting to the sliding connection docking rod is provided on the first connecting platform. A sixth sliding groove for adapting to the sliding connection docking rod is provided on the sampling cylinder. The output end of the first electric push rod is fixedly connected to the lifting platform. The first electric push rod is fixedly installed on the second connecting platform. A clearance groove for avoiding the first electric push rod is provided on the rotating disk.

[0012] As a further embodiment of the present invention, the support control mechanism further includes a lifting sleeve for driving the third support arm to retract and support. The lifting sleeve is threadedly connected to a lead screw. The other end of the first support arm is rotatably connected to the lifting sleeve. The other end of the second support arm is rotatably connected to a first fixed seat. The first fixed seat is fixedly installed on a first connecting platform by a plurality of fixed rods. One end of the second support arm is rotatably connected to one end of the third support arm by a second connecting shaft. One end of the first support arm is slidably connected to the third support arm by a third connecting shaft. The third support arm is provided with a fifth sliding groove adapted to slidably connect to the third connecting shaft. The other end of the third support arm is fixedly connected to a second support base plate.

[0013] As a further embodiment of the present invention, the support control mechanism further includes a first support base plate for bottom lifting, the first support base plate being fixedly connected to the output end of a second electric push rod, the second electric push rod being fixedly installed on a first fixed base, the lead screw being fixedly connected to the output shaft of a first motor, and the first motor being fixedly installed on a first connecting platform.

[0014] A sampling method for a biological sample sampling and detection device includes the following steps: Step 1: The second electric push rod drives the first support base plate to descend for center positioning of the device. According to the sampling and testing position, the output shaft of the first motor drives the lead screw to rotate, so that the lifting sleeve rises and falls on the lead screw. The lifting sleeve moves downward, so that the second support base plate on the third support arm moves and opens, so that the support range of the second support base plate is increased. This completes the height adjustment of the first support base plate driven by the second electric push rod, so that the device can perform stable support sampling. Step 2: Based on the sampling range of the sampling needle tube on the sampling cylinder, the output shaft of the second motor works to make the rotating gear on the fourth connecting shaft rotate, complete the adjustment and rotation of the rotating disk, and make the drive rod drive the sampling needle tube on the sampling cylinder to perform extension and retraction control, thus completing the sampling extension and retraction adjustment. Step 3: Sampling. The first electric push rod drives the lifting platform to lift, which in turn lifts the piston on the piston rod, completing the sampling and extraction of the biological sample below. While ensuring sampling at the same time, sampling and processing are completed at different locations.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: This invention enhances the stability of the sampling process through a support control mechanism, avoiding sample loss and contamination, while lowering the operational threshold and improving sampling efficiency and standardization. This method of controlling the opening and positioning of multiple support arms achieves stable non-contact sampling, further improving the safety and efficiency of sampling.

[0016] The extended control mechanism and sampling control mechanism can effectively control variables, improve the reliability of experimental data, and facilitate adaptation to batch experimental needs. Samples after multi-tube sampling can be directly used with multi-channel detection equipment, reducing sample transfer steps and further improving the efficiency of the overall experimental process. In addition, this adjustable extended and synchronous control sampling method enhances the applicability of the device in complex biological experiments, providing researchers with a sampling solution that is both scientific and efficient.

[0017] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the invention.

[0019] Figure 2 This is a side view of an embodiment of the invention.

[0020] Figure 3 This is a schematic diagram of the connection structure of the rotating disk in an embodiment of the invention.

[0021] Figure 4 This is a schematic diagram of the exploded structure of the rotating disk connection in an embodiment of the invention.

[0022] Figure 5 for Figure 4 A magnified structural diagram of A in the diagram.

[0023] Figure 6 This is an exploded structural diagram of the second connecting platform in an embodiment of the invention.

[0024] Figure 7 This is a partial cross-sectional view of the second connecting platform in an embodiment of the invention.

[0025] Figure 8 This is a schematic diagram of the connection structure inside the first connecting platform in an embodiment of the invention.

[0026] Figure 9 This is a cross-sectional view of the sampling cylinder in an embodiment of the invention.

[0027] Figure 10 for Figure 9 A magnified structural diagram of B in the diagram.

[0028] Figure 11 This is a schematic diagram of the connection structure of the lifting sleeve in an embodiment of the invention.

[0029] Reference numerals: 1. First connecting platform; 2. Second connecting platform; 3. Rotary disk; 4. Curved groove; 5. Alternating groove; 6. First electric push rod; 7. First slide rail; 8. Second slide rail; 9. Lifting platform; 10. Multi-stage telescopic rod; 11. Connecting sleeve; 12. Connecting rod; 13. Drive rod; 14. First sliding rod; 15. Second sliding rod; 16. Third slide rail; 17. Fourth slide rail; 18. Sampling cylinder; 19. Lifting guide column; 20. Traction rod; 21. Fixing plate; 22. Air vent; 23. Piston rod; 24. Piston; 25. Sampling needle 26. Pipe; 27. First motor; 28. Lead screw; 29. ​​First fixed seat; 30. Second electric push rod; 31. First support base plate; 32. Lifting sleeve; 33. First support arm; 34. Second support arm; 35. First connecting shaft; 36. Second connecting shaft; 37. Third support arm; 38. Fifth slide groove; 39. Third connecting shaft; 40. Second support base plate; 41. Fixed rod; 42. Rotating gear; 43. Fourth connecting shaft; 44. Bevel gear pair; 45. Second motor; 46. Internal gear teeth; 47. Second fixed seat; 48. Sixth slide groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] See Figures 1 to 11A biological sample sampling and detection device includes a first connecting platform 1, a second connecting platform 2 mounted on the first connecting platform 1, a rotating disk 3 movably mounted on the second connecting platform 2, and a plurality of sampling cylinders 18 for sampling and detection movably mounted on the outer side of the first connecting platform 1. Each sampling cylinder 18 is equipped with a sampling needle 25. The device also includes: A support control mechanism is installed on the first connecting platform 1 and is used to drive the lower part of the first connecting platform 1 to perform support control processing. The support control mechanism includes a first support arm 32 and a second support arm 33 for support connection. The first support arm 32 and the second support arm 33 are rotatably connected by a first connecting shaft 34. A third support arm 36 for lifting is movably installed at one end of the first support arm 32 and the second support arm 33. A second support base plate 39 for support is provided at the bottom of the third support arm 36.

[0033] Furthermore, the support control mechanism also includes a lifting sleeve 31 for driving the third support arm 36 to retract and support. The lifting sleeve 31 is threaded to the lead screw 27. The other end of the first support arm 32 is rotatably connected to the lifting sleeve 31. The other end of the second support arm 33 is rotatably connected to the first fixed seat 28. The first fixed seat 28 is fixedly installed on the first connecting platform 1 by a plurality of fixed rods 40. One end of the second support arm 33 is rotatably connected to one end of the third support arm 36 by the second connecting shaft 35. One end of the first support arm 32 is limited and slidably connected to the third support arm 36 by the third connecting shaft 38. The third support arm 36 is provided with a fifth sliding groove 37 adapted to slide and connect the third connecting shaft 38. The other end of the third support arm 36 is fixedly connected to the second support base plate 39.

[0034] Furthermore, the support control mechanism also includes a first support base plate 30 for bottom lifting. The first support base plate 30 is fixedly connected to the output end of the second electric push rod 29. The second electric push rod 29 is fixedly installed on the first fixed base 28. The lead screw 27 is fixedly connected to the output shaft of the first motor 26. The first motor 26 is fixedly installed on the first connecting platform 1.

[0035] Preferably, during the sampling and testing of biological samples, the second electric push rod 29 drives the first support base plate 30 to descend for center positioning of the device. Subsequently, depending on the sampling and testing location, the output shaft of the first motor 26 drives the lead screw 27 to rotate. With the threaded connection between the lifting sleeve 31 and the lead screw 27, the lifting sleeve 31 is driven to rise and fall on the lead screw 27. That is, when the lifting sleeve 31 moves downward, the first support arm 32 and the second support arm 33 are rotatably connected, and the third connecting shaft 38 on the first support arm 32 is slidably connected to the fifth sliding groove 37 on the third support arm 36. This allows the second support base plate 39 on the third support arm 36 to move and open accordingly, thereby significantly increasing the support range of the second support base plate 39, which facilitates subsequent sampling processing. Furthermore, the second electric push rod 29 can correspondingly drive the first support base plate 30 to adjust its height, thereby enabling better support and fixation of the device.

[0036] This support and positioning method enhances the stability of the sampling process, avoids sample loss and contamination, lowers the operational threshold, and improves sampling efficiency and standardization. By controlling the opening and positioning of multiple support arms, stable non-contact sampling is achieved, further improving the safety and efficiency of sampling.

[0037] like Figures 1 to 11 As shown, this embodiment, based on the above embodiment, further includes an extension control mechanism, which is installed at the connection between the second connecting platform 2 and the first connecting platform 1, for driving the sampling cylinder 18 to perform extension and retraction processing. The extension control mechanism includes a drive rod 13 for driving the sampling cylinder 18 to extend and retract. The sampling cylinder 18 is fixedly installed at one end of the drive rod 13. The drive rod 13 is slidably connected to the second connecting platform 2 through a first sliding rod 14, and the rotating disk 3 has a curved groove 4 for driving the drive rod 13 on the first sliding rod 14 to move; and The sampling control mechanism is installed at the connection between the sampling cylinder 18 and the first connecting platform 1. It is used to drive the sampling needle tube 25 on the sampling cylinder 18 to perform sampling. The sampling control mechanism includes a lifting guide column 19 for liquid aspiration drive. The lifting guide column 19 is fixedly installed at one end of the docking rod 12. The other end of the docking rod 12 is connected to a lifting platform 9 for lifting control.

[0038] Furthermore, the extension control mechanism also includes a second sliding rod 15 for guiding the extension of the drive rod 13. The second sliding rod 15 is fixedly installed on the drive rod 13. A third sliding groove 16 adapted to slide and connect the second sliding rod 15 is provided on the first connecting platform 1. A first sliding groove 7 adapted to slide and connect the first sliding rod 14 is provided on the second connecting platform 2. A second sliding groove 8 adapted to slide and connect the drive rod 13 is also provided on the second connecting platform 2.

[0039] Furthermore, the extended control mechanism also includes a second motor 44 for driving the rotating disk 3 to rotate. The inner side of the rotating disk 3 is provided with a plurality of internal teeth 45 that mesh with the rotating gear 41. The rotating gear 41 is rotatably mounted on the second fixed seat 46 via the fourth connecting shaft 42. The second fixed seat 46 is fixedly mounted on the outer side of the second connecting platform 2. The fourth connecting shaft 42 is rotatably connected to the output shaft of the second motor 44 via a bevel gear pair 43. The second motor 44 is fixedly mounted inside the second connecting platform 2.

[0040] Furthermore, the sampling control mechanism also includes a piston 24 for liquid extraction. The piston 24 is slidably connected to the fixed plate 21 by the piston rod 23. The fixed plate 21 is fixedly installed inside the sampling cylinder 18. The fixed plate 21 has an air guide hole 22, and one end of the piston rod 23 is fixedly connected to a lifting guide column 19 by a traction rod 20.

[0041] Furthermore, the sampling control mechanism also includes a first electric push rod 6 for driving the lifting guide column 19 to make a lifting connection. The lifting guide column 19 is fixedly connected to a connecting sleeve 11 through a docking rod 12. The connecting sleeve 11 is fixedly installed on the lifting platform 9 through a multi-stage telescopic rod 10, and the connecting sleeve 11 is slidably connected to the second sliding rod 15. The first connecting platform 1 is provided with a fourth sliding groove 17 for adapting to the sliding connection docking rod 12. The sampling cylinder 18 is provided with a sixth sliding groove 47 for adapting to the sliding connection docking rod 12. The lifting platform 9 is fixedly connected to the output end of the first electric push rod 6. The first electric push rod 6 is fixedly installed on the second connecting platform 2. The rotating disk 3 is provided with a clearance groove 5 for avoiding the first electric push rod 6.

[0042] Preferably, in this embodiment, according to the sampling range of the sampling needle tube 25 on the sampling cylinder 18, the output shaft of the second motor 44 operates, driving the rotating gear 41 on the fourth connecting shaft 42 to rotate under the connection relationship of the bevel gear pair 43. Thus, under the meshing connection relationship between the rotating gear 41 and the inner teeth 45 on the inner side of the rotating disk 3, the rotating disk 3 is driven to rotate in a controlled manner. Therefore, under the driving action of the curved groove 4 on the rotating disk 3 and the limiting and guiding action of the first sliding groove 7 on the second connecting platform 2, the driving rod 13 can be driven to drive the sampling needle tube 25 on the sampling cylinder 18 to perform extension and contraction control, that is, the synchronous extension and contraction processing of the control variable, which facilitates better sampling and detection in the later stage and significantly improves the efficiency of sampling and detection.

[0043] When the sampling needle 25 on the sampling cylinder 18 moves to the required position, the piston 24 inside the sampling cylinder 18 is pre-lowered to the corresponding position. At this time, the first electric push rod 6 drives the lifting platform 9 to rise. Consequently, under the traction of the multi-stage telescopic rod 10, the connecting sleeve 11, and the docking rod 12, the lifting platform 9 drives the piston 24 on the piston rod 23 to rise, thereby facilitating the sampling and extraction of biological samples below. Figure 9 and Figure 10 The image shows the state at the highest extraction position. Therefore, even if multiple sampling cylinders 18 extend, retract, or move in any way, the sampling cylinders 18 can extract samples synchronously. Thus, while ensuring sampling at the same time, sampling processing at different positions is completed. In other words, this device effectively completes the sampling and detection processing of control variables, greatly improving the sampling and detection efficiency for subsequent comparisons.

[0044] This sampling method effectively controls variables, improves the reliability of experimental data, and is easy to adapt to the needs of batch experiments. Samples after multi-tube sampling can be directly used with multi-channel detection equipment, reducing sample transfer steps and further improving the efficiency of the overall experimental process. In addition, this adjustable and synchronously controlled sampling method enhances the applicability of the device in complex biological experiments, providing researchers with a sampling solution that is both scientific and efficient.

[0045] A sampling method for a biological sample sampling and detection device includes the following steps: Step 1: The second electric push rod 29 drives the first support base plate 30 to descend for center positioning of the device. According to the sampling and testing position, the output shaft of the first motor 26 drives the lead screw 27 to rotate, so that the lifting sleeve 31 rises and falls on the lead screw 27. The lifting sleeve 31 moves downward, so that the second support base plate 39 on the third support arm 36 moves and opens, so that the support range of the second support base plate 39 is increased. This completes the height adjustment of the first support base plate 30 driven by the second electric push rod 29, so that the device can perform stable support sampling processing. Step 2: According to the sampling range of the sampling needle tube 25 on the sampling cylinder 18, the output shaft of the second motor 44 works to make the rotating gear 41 on the fourth connecting shaft 42 rotate, complete the adjustment rotation of the rotating disk 3, and make the drive rod 13 drive the sampling needle tube 25 on the sampling cylinder 18 to perform extension and contraction control, and complete the sampling extension and contraction adjustment. Step 3: Sampling. The first electric push rod 6 drives the lifting platform 9 to lift, which in turn lifts the piston 24 on the piston rod 23, completing the sampling and extraction of the biological sample below. While ensuring sampling at the same time, sampling and processing at different locations are completed.

[0046] It should be noted that the components in this application are all general standard parts or parts known to those skilled in the art, which effectively solve the technical problems raised in the background art.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sampling and detection device for biological samples, comprising a first connecting platform (1), characterized in that, A second connecting platform (2) is installed on the first connecting platform (1), and a rotating disk (3) is movably installed on the second connecting platform (2). Several sampling cylinders (18) for sampling and detection are movably installed on the outer side of the first connecting platform (1). Sampling needles (25) are provided on the sampling cylinders (18). The platform also includes: An extension control mechanism is installed at the connection between the second connecting platform (2) and the first connecting platform (1) to drive the sampling cylinder (18) to perform extension and retraction. The extension control mechanism includes a drive rod (13) for driving the sampling cylinder (18) to perform extension and retraction. The sampling cylinder (18) is fixedly installed at one end of the drive rod (13). The drive rod (13) is limited and slidably connected to the second connecting platform (2) through the first sliding rod (14). A curved groove (4) is provided on the rotating disk (3) for driving the drive rod (13) on the first sliding rod (14) to move. A sampling control mechanism is installed at the connection between the sampling cylinder (18) and the first connecting platform (1) to drive the sampling needle tube (25) on the sampling cylinder (18) to perform sampling. The sampling control mechanism includes a lifting guide column (19) for liquid aspiration drive. The lifting guide column (19) is fixedly installed at one end of the docking rod (12). The other end of the docking rod (12) is connected to a lifting platform (9) for lifting control. A support control mechanism is installed on the first connecting platform (1) and is used to drive the lower part of the first connecting platform (1) to perform support control processing. The support control mechanism includes a first support arm (32) and a second support arm (33) for support connection. The first support arm (32) and the second support arm (33) are rotatably connected by a first connecting shaft (34). A third support arm (36) for lifting is movably installed at one end of the first support arm (32) and the second support arm (33). A second support base plate (39) for support is provided at the bottom of the third support arm (36).

2. The biological sample sampling and detection device according to claim 1, characterized in that, The extension control mechanism further includes a second sliding rod (15) for guiding the extension of the drive rod (13). The second sliding rod (15) is fixedly installed on the drive rod (13). The first connecting platform (1) is provided with a third sliding groove (16) adapted to slide the second sliding rod (15). The second connecting platform (2) is provided with a first sliding groove (7) adapted to slide the first sliding rod (14). The second connecting platform (2) is also provided with a second sliding groove (8) adapted to slide the drive rod (13).

3. The biological sample sampling and detection device according to claim 2, characterized in that, The extended control mechanism also includes a second motor (44) for driving the rotating disk (3) to rotate. The inner side of the rotating disk (3) is provided with a plurality of internal teeth (45) that mesh with the rotating gear (41). The rotating gear (41) is rotatably mounted on the second fixed seat (46) through the fourth connecting shaft (42). The second fixed seat (46) is fixedly mounted on the outer side of the second connecting platform (2). The fourth connecting shaft (42) is rotatably connected to the output shaft of the second motor (44) through the bevel gear pair (43). The second motor (44) is fixedly mounted inside the second connecting platform (2).

4. The biological sample sampling and detection device according to claim 1, characterized in that, The sampling control mechanism also includes a piston (24) for liquid extraction. The piston (24) is slidably connected to the fixed plate (21) by a piston rod (23). The fixed plate (21) is fixedly installed inside the sampling cylinder (18). The fixed plate (21) has an air guide hole (22) and one end of the piston rod (23) is fixedly connected to a lifting guide column (19) by a traction rod (20).

5. The biological sample sampling and detection device according to claim 4, characterized in that, The sampling control mechanism also includes a first electric push rod (6) for driving the lifting guide column (19) to make a lifting connection. The lifting guide column (19) is fixedly connected to a connecting sleeve (11) through a docking rod (12). The connecting sleeve (11) is fixedly installed on the lifting platform (9) through a multi-stage telescopic rod (10). The connecting sleeve (11) is slidably connected to the second sliding rod (15). The first connecting platform (1) is provided with a fourth sliding groove (17) for adapting to the sliding connection docking rod (12). The sampling cylinder (18) is provided with a sixth sliding groove (47) for adapting to the sliding connection docking rod (12). The lifting platform (9) is fixedly connected to the output end of the first electric push rod (6). The first electric push rod (6) is fixedly installed on the second connecting platform (2). The rotating disk (3) is provided with a clearance groove (5) for avoiding the first electric push rod (6).

6. The biological sample sampling and detection device according to claim 1, characterized in that, The support control mechanism also includes a lifting sleeve (31) for driving the third support arm (36) to retract and support. The lifting sleeve (31) is threaded to the lead screw (27). The other end of the first support arm (32) is rotatably connected to the lifting sleeve (31). The other end of the second support arm (33) is rotatably connected to the first fixed seat (28). The first fixed seat (28) is fixedly installed on the first connecting platform (1) by a plurality of fixed rods (40). One end of the second support arm (33) is rotatably connected to one end of the third support arm (36) through the second connecting shaft (35). One end of the first support arm (32) is limited and slidably connected to the third support arm (36) through the third connecting shaft (38). The third support arm (36) is provided with a fifth sliding groove (37) adapted to slide and connect the third connecting shaft (38). The other end of the third support arm (36) is fixedly connected to the second support base plate (39).

7. The biological sample sampling and detection device according to claim 6, characterized in that, The support control mechanism also includes a first support base plate (30) for bottom lifting. The first support base plate (30) is fixedly connected to the output end of the second electric push rod (29). The second electric push rod (29) is fixedly installed on the first fixed seat (28). The lead screw (27) is fixedly connected to the output shaft of the first motor (26). The first motor (26) is fixedly installed on the first connecting platform (1).

8. A sampling method for a biological sample sampling and detection device, applied to the biological sample sampling and detection device as described in any one of claims 1-7, characterized in that, The sampling method of the biological sample sampling and detection device includes the following steps: Step 1: The second electric push rod (29) drives the first support base plate (30) to descend for center positioning of the device. According to the sampling and testing position, the output shaft of the first motor (26) drives the lead screw (27) to rotate, so that the lifting sleeve (31) is raised and lowered on the lead screw (27). The lifting sleeve (31) moves downward, so that the second support base plate (39) on the third support arm (36) moves and opens, so that the support range of the second support base plate (39) is raised, and the height adjustment of the first support base plate (30) driven by the second electric push rod (29) is completed, so that the device can perform stable support sampling processing. Step 2: According to the sampling range of the sampling needle tube (25) on the sampling cylinder (18), the output shaft of the second motor (44) works to make the rotating gear (41) on the fourth connecting shaft (42) rotate, complete the adjustment and rotation of the rotating disk (3), and make the drive rod (13) drive the sampling needle tube (25) on the sampling cylinder (18) to perform extension and contraction control, and complete the sampling extension and contraction adjustment; Step 3: Sampling is performed. The first electric push rod (6) drives the lifting platform (9) to lift, so that the piston (24) on the piston rod (23) is lifted, completing the sampling and extraction of the biological sample below. While ensuring sampling at the same time, sampling and extraction at different locations are completed.

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