Swab sampling mechanism

Abstract

The application discloses a swab sampling mechanism, which comprises a rack, a main shaft arranged horizontally above the rack, a driving sliding block connected to the main shaft, a driven sliding block connected to the main shaft, elastic members connected to the driving sliding block and the driven sliding block respectively and arranged in the elastic extension direction parallel to the main shaft, an assembling part rotatably connected to the end of the main shaft and located on the side of the driven sliding block away from the driving sliding block, and provided with a swab assembling hole at one end and connected to the driven sliding block at the other end, and a driving device arranged on the rack and connected to the driving sliding block to drive the driving sliding block to slide along the main shaft and drive the assembling part to rotate around the main shaft. The application enables medical staff to sample without holding the swab at a close distance, and the compression degree of the elastic members can be used to intuitively understand and judge the sampling force, so that the sampling force can be controlled.

Description

Technical Field

[0001] This invention relates to the field of sampling technology, and in particular to a swab sampling mechanism. Background Technology

[0002] Public health emergencies caused by infectious diseases can easily lead to widespread infection and even death, severely impacting society as a whole. As a commonly used medical testing method for infectious diseases, throat sampling involves collecting secretions from the throat and tonsils using sampling tools for bacterial culture or virus isolation. This allows for understanding of the patient's condition, oral mucosa, and throat infection status. However, for some highly contagious and dangerous viruses that cause infectious diseases, the collection of throat biological samples carries a high risk of infection, potentially leading to infection among healthcare workers, causing staff shortages, and further escalating the epidemic.

[0003] To extend the distance between medical staff and those being sampled and reduce the infection rate of medical staff, existing technologies provide robotic arms to move swabs inside the mouth of those being sampled, so as to touch the throat or tonsils for sampling. However, it is not easy to know the sampling force during the sampling process, which can easily cause the swab to puncture the person being sampled.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a swab sampling mechanism that addresses the above-mentioned deficiencies of the prior art, thereby extending the distance between medical staff and the person being sampled during sampling and making it easier to understand the sampling intensity.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows:

[0007] A swab sampling device, comprising:

[0008] frame;

[0009] The main spindle is horizontally arranged above the frame;

[0010] An active slider is slidably connected to the main shaft;

[0011] The driven slider is slidably connected to the main shaft;

[0012] An elastic element is connected to the active slider and the driven slider respectively, and its elastic extension and contraction direction is parallel to the main shaft;

[0013] The assembly is rotatably connected to the end of the main shaft and located on the side of the driven slider away from the driving slider; one end of the assembly is provided with a swab mounting hole, and the other end is connected to the driven slider in a transmission manner.

[0014] A drive device, mounted on the frame and connected to the active slider, is used to drive the active slider to slide along the main shaft, thereby causing the assembly to rotate around the main shaft.

[0015] The swab sampling mechanism, wherein the driving device includes:

[0016] Drive arm;

[0017] A driver, mounted on the frame and connected to the drive arm, drives the drive arm to move;

[0018] The direction of movement of the drive arm is parallel to the axial direction of the main shaft; the drive arm is provided with a slot, and the active slider part is located in the slot and is in clearance fit with the slot.

[0019] The swab sampling mechanism includes a first rotary driver mounted on the frame. The first rotary driver is connected to the main shaft and drives the main shaft to rotate.

[0020] The swab sampling mechanism includes a V-shaped assembly, the corner of which is rotatably connected to the main shaft.

[0021] The swab sampling mechanism further includes a linear connecting rod, one end of which is rotatably connected to the V-shaped assembly, and the other end of which is rotatably connected to the driven slider.

[0022] The swab sampling mechanism, wherein the assembly includes:

[0023] The roller is rotatably connected to the main shaft and is also drive-connected to the driven slider.

[0024] An assembly rod is provided at one end on the circumference of the roller; the swab assembly hole is located at the other end of the assembly rod.

[0025] The swab sampling mechanism includes a roller with multiple circumferential grooves and a rack on the driven slider. The rack is parallel to the main shaft and meshes with the grooves.

[0026] The swab sampling mechanism, wherein the assembly is a linear assembly.

[0027] The swab sampling mechanism includes a transition block on the linear assembly and an elongated hole on the driven slider, the elongated hole being perpendicular to the main shaft; the transition block is located inside the elongated hole; when the assembly rotates, the transition block rotates relative to the elongated hole and moves along the length direction of the elongated hole.

[0028] The swab sampling mechanism includes a second rotary driver on the assembly; the second rotary driver has a mounting hole that mates with the swab; when the swab is assembled into the mounting hole, the second rotary driver can drive the swab to rotate.

[0029] Beneficial effects: The swab sampling mechanism of this invention not only extends the distance between medical staff and the person being sampled, eliminating the need for medical staff to hold the swab at close range for sampling, but also allows for a more intuitive understanding and judgment of the sampling force by utilizing the compression degree of the elastic element, thus facilitating the control of the sampling force. Furthermore, the swab sampling mechanism has a simple structure, low cost, and facilitates large-scale deployment, reducing its service life and lowering the risk of cross-infection. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the swab sampling mechanism described in Embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the swab sampling mechanism in Embodiment 1 of the present invention when the swab is not assembled;

[0032] Figure 3 This is a schematic diagram of the drive device described in this invention;

[0033] Figure 4 This is a schematic diagram of the overall structure of the swab sampling mechanism described in Embodiment 2 of the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure of the swab sampling mechanism described in Embodiment 3 of the present invention;

[0035] Figure 6 This is a schematic diagram of the main shaft described in this invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main spindle; 2. Driving slider; 3. Driven slider; 4. Elastic element; 5. Assembly part; 6. Drive device; 61. Driver; 62. Drive arm; 63. Slot; 7. Swab assembly hole; 8. Scale line; 9. First rotary driver; 10. Linear connecting rod; 11. Roller; 12. Assembly rod; 13. Gear groove; 14. Rack; 15. Crank arm; 16. Second rotary driver; 17. U-shaped connector; 18. Adapter block; 19. Elongated hole; 100. Swab. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, 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 of the invention and are not intended to limit the invention.

[0039] This invention provides a swab sampling mechanism, such as... Figure 1 , Figure 4 and Figure 5 As shown, the swab sampling mechanism includes: a frame (not shown), a main shaft 1, an active slider 2, a driven slider 3, an elastic element 4, an assembly 5, and a drive device 6. The main shaft 1 is located above the frame and is arranged horizontally; the active slider 2 and the driven slider 3 are arranged sequentially at intervals along the axial direction of the main shaft 1 and are both slidably connected to the main shaft 1. The elastic element 4 is parallel to the main shaft 1 and is arranged between the active slider 2 and the driven slider 3, with both ends of the elastic element 4 connected to the active slider 2 and the driven slider 3 respectively; the elastic extension and contraction direction of the elastic element 4 is parallel to the central axis of the main shaft 1.

[0040] The assembly 5 is located on the side of the driven slider 3 away from the driving slider 2, and is rotatably connected to the end of the main shaft 1; as shown Figure 2 As shown, one end of the assembly 5 is provided with a swab assembly hole 7, and the other end is connected to the driven slider 3 for transmission; the swab assembly hole 7 is used to assemble the non-sampling end of the swab 100. The driving device 6 is disposed on the frame and connected to the active slider 2; the driving device 6 is used to drive the active slider 2 to slide along the main shaft 1. When the driving device 6 is activated, the active slider 2 slides along the axial direction of the main shaft 1 to drive the assembly 5 to rotate around the main shaft 1, so that the sampling end of the swab 100 assembled in the swab assembly hole 7 can rotate in the mouth of the person to be sampled to collect a sample.

[0041] In this invention, since the active slider 2 is directly connected to the driving device 6, the active slider 2 is the active component. When the driving device 6 is started, the active slider 2 first slides along the axial direction of the main shaft 1. Under the linkage action of the elastic element 4, the driven slider 3 slides along the axial direction of the main shaft 1 with the elastic element 4, thereby pushing the assembly 5 to rotate around the main shaft 1.

[0042] When the accessory 5 rotates until the end of the swab 100 touches the sampling site such as the tonsils or posterior pharyngeal wall of the person to be sampled, the accessory 5 stops rotating. At this time, the length of the elastic element 4 is the first length. The driving device 6 continues to drive the active slider 2 to slide. Under the pushing force of the active slider 2 and the supporting action of the sampling site of the person to be sampled, the elastic element 4 is compressed. At this time, the length of the elastic element 4 is the second length. Since the degree of compression and elastic force of the elastic element 4 have a linear correspondence, each compression distance corresponds to a specific elastic force. Therefore, by measuring the first length and the second length and calculating the difference between the first length and the second length, the compression distance of the elastic element 4 can be obtained. Thus, based on the linear correspondence between the degree of compression and elastic force of the elastic element 4, the elastic force generated by the compressed elastic element 4 can be obtained. Due to the transmission of the thrust of the driven slider 3 and the assembly 5 to the elastic element 4, the sampling force at the sampling end of the swab 100 corresponds one-to-one with the elastic force of the elastic element 4. The greater the compression distance of the elastic element 4, the greater the sampling force; the smaller the compression distance of the elastic element 4, the smaller the sampling force. Ultimately, the sampling force can be accurately determined by calculating the compression distance of the elastic element 4, thereby precisely controlling the sampling force.

[0043] The swab sampling mechanism of this invention not only extends the distance between medical staff and the person being sampled, eliminating the need for medical staff to hold the swab 100 at close range for sampling, but also allows for a more intuitive understanding and judgment of the sampling force by utilizing the compression degree of the elastic element 4, thus facilitating the control of the sampling force. Furthermore, the swab sampling mechanism has a simple structure, low cost, and facilitates large-scale deployment, reducing its service life and lowering the risk of cross-infection.

[0044] A specific embodiment of the present invention, such as Figure 6 As shown, the main shaft 1 is provided with scale lines 8, which are distributed along the axial direction of the main shaft 1. The smallest unit of measurement for the scale lines 8 is millimeters. By setting the scale lines 8, it is easier for staff to calculate the compression distance of the elastic element 4, thereby making it easier to judge the magnitude of the sampling force and thus accurately control the sampling force.

[0045] In one specific embodiment of the present invention, the active slider 2, the elastic element 4, and the driven slider 3 are all sleeved on the main shaft 1. The main shaft 1 guides and limits the movement of the active slider 2, the elastic element 4, and the driven slider 3, ensuring that their movements are all linear. Simultaneously, sleeved on the main shaft 1, the elastic element 4 is effectively prevented from bending during elastic deformation, thereby improving the accuracy of calculating the compression distance of the elastic element 4 and enhancing the accuracy of judging the sampling force.

[0046] In one specific embodiment of the present invention, the elastic element 4 is one of elastic rubber, polymer elastomer, torque spring, and air spring. It should be noted that, regardless of which type of elastomer is selected, its elastic deformation has a specific correspondence with the applied force, thereby facilitating the acquisition of the sampling force at the sampling end of the swab 100 based on its compression distance.

[0047] like Figure 3 As shown, the driving device 6 includes a driver 61 and a driving arm 62. The driver 61 is mounted on the frame, and the driving arm 62 is mounted on the driver 61, thereby driving the driving arm 62 to move linearly via the driver 61. The direction of movement of the driving arm 62 is parallel to the central axis of the main shaft 1. The driving arm 62 is located above the main shaft 1, and a slot 63 is provided on the side of the driving arm 62 facing the main shaft 1. A portion of the active slider 2 is located within the slot 63 and is clearance-fitted with the slot 63. When the driver 61 is activated, the drive shaft of the driver 61 pushes the active slider 2 to slide axially along the main shaft 1 via the driving arm 62.

[0048] In one specific embodiment of the present invention, the driver 61 includes a linear motor, and the piston rod of the linear motor is connected to the drive arm 62, thereby driving the drive arm 62 to move in a straight line.

[0049] The frame is also equipped with a first rotary drive 9, such as Figure 1 , Figure 4 and Figure 5As shown, the first rotary driver 9 is connected to the main shaft 1 and drives the main shaft 1 to rotate around its central axis. When the main shaft 1 rotates, the active slider 2, the driven slider 3, the elastic element 4, and the mounting part 5 all rotate around the central axis of the main shaft 1, thereby driving the swab 100, which is assembled in the swab mounting hole 7, to rotate around the central axis of the main shaft 1, thus controlling the sampling direction of the swab 100. During the sampling process, the first rotary driver 9 is activated, causing the swab 100 to rotate around the main shaft 1 along the contact surface of the sampling site inside the mouth of the person to be sampled, thereby effectively improving the accuracy and efficiency of sampling.

[0050] In one specific embodiment of the present invention, the first rotary driver 9 includes a rotary motor, the shaft of which is coaxially connected to the main shaft 1, thereby driving the main shaft 1 to rotate about its central axis. Figure 2 As shown, the active slider 2 is a circular slider. Since the outer surface of the active slider 2 is circular and the cooperation between the active slider 2 and the slot 63 is a clearance fit, the active slider 2 can rotate relative to the slot 63 when the main shaft 1 rotates.

[0051] This invention can be achieved by: arranging multiple supports on the frame, with these supports spaced apart sequentially along the axial direction of the main shaft 1, and installing a bearing on the top of each support, so that the main shaft 1 passes through the inner ring of each bearing in sequence, thereby engaging with the inner ring of each bearing. This method positions the main shaft 1 above the frame, ensuring that the main shaft 1 can rotate under the drive of the first rotary driver 9 without interfering with the sliding of the active slider 2, the driven slider, and the elastic element 4 along the main shaft 1. It should be noted that the above positioning of the main shaft 1 is only one example; any other mechanism that can be mounted on the frame to support the main shaft 1 without interfering with its rotation, or with the sliding of the active slider 2, the driven slider, and the elastic element 4 along the main shaft 1, can be applied to this invention.

[0052] Embodiment 1 of the present invention, as follows Figure 1 As shown, the assembly 5 is a V-shaped assembly, and the corner of the V-shaped assembly is rotatably connected to the main shaft 1. In one specific embodiment of this example, the corner of the V-shaped assembly is an obtuse angle. One free end of the V-shaped assembly is provided with the swab assembly hole 7; the other free end is lower than the main shaft 1 and is rotatably connected to the driven slider 3.

[0053] The swab sampling mechanism also includes a linear connecting rod 10. One end of the linear connecting rod 10 is rotatably connected to the free end of the driven slider 3 corresponding to the V-shaped assembly, and the other end is rotatably connected to the driven slider 3, thereby realizing the rotational connection between the V-shaped assembly and the driven slider 3 through the linear connecting rod 10.

[0054] Initially, the elastic element 4 is in its natural state, and the driven slider 3 is away from the V-shaped fitting, so that the swab 100 assembled in the swab assembly hole 7 is in a horizontal or relatively horizontal state, making it convenient for the person to be sampled to wrap the swab 100 with their mouth and wait for the swab 100 to be sampled. When the driving device 6 is started, the driven slider 3 moves along the main shaft 1 towards the V-shaped fitting, and drives the V-shaped fitting to rotate along the vertical plane through the linear connecting rod 10. At the same time, the linear connecting rod 10 rotates relative to the driven slider 3 and the V-shaped fitting, respectively, realizing the conversion of the linear movement of the driven slider 3 into the rotation of the V-shaped fitting around the main shaft 1, so that the swab 100 assembled in the swab assembly hole 7 tilts upward, so that the swab 100 can touch the throat or tonsils of the person to be sampled for sampling.

[0055] Embodiment 2 of the present invention, as follows Figure 4 As shown, the assembly 5 includes a roller 11 and an assembly rod 12; the center of the roller 11 is rotatably connected to the main shaft 1, and the roller 11 is also drively connected to the driven slider 3. The center of the roller 11 is located on the central axis of the main shaft 1, such that a portion of the roller 11 is lower than the main shaft 1; one end of the assembly rod 12 is disposed on the circumference of the roller 11, and the other end extends outward from the roller 11. The swab assembly hole 7 is located at the end of the assembly rod 12 away from the roller 11.

[0056] The roller 11 is provided with a plurality of toothed grooves 13, which are arranged sequentially and evenly at intervals along the circumference of the roller 11. The driven slider 3 is provided with a rack 14, which is parallel to the main shaft 1 and located below the main shaft 1; the rack 14 meshes with the toothed grooves 13.

[0057] The rack 14 and the toothed groove 13 are always in a meshing state; initially, the elastic element 4 is in a natural state, and the driven slider 3 is away from the mounting part 5, so that the swab 100 assembled in the swab mounting hole 7 is in a horizontal or relatively horizontal state, which makes it convenient for the person to be sampled to wrap the swab 100 with their mouth and wait for the swab 100 to be sampled. When the drive device 6 is started, the driven slider 3 moves along the main shaft 1 toward the assembly 5. Under the thrust of the driven slider 3, the rack 14 moves toward the roller 11 in a direction parallel to the central axis of the main shaft 1. Under the meshing action of the rack 14 and the tooth groove 13, the roller 11 rotates around the main shaft 1 and drives the assembly rod 12 to rotate along the vertical plane, thereby converting the linear movement of the driven slider 3 into the rotation of the assembly 5 around the main shaft 1, so that the swab 100 assembled in the swab assembly hole 7 tilts upward, so that the swab 100 can touch the throat or tonsils of the person to be sampled for sampling.

[0058] According to Embodiment 1 or Embodiment 2, the present invention provides a specific implementation in which the rotation of the assembly 5 is a rotation along a vertical plane, and as shown... Figure 1 and Figure 4 As shown, the assembly 5 is rotatably connected to the main shaft 1 via a U-shaped connector 17. Specifically, a U-shaped connector 17 is provided at the end of the main shaft 1. The U-shaped connector 17 is located on the side of the driven slider 3 away from the driving slider 2 and is used to install the assembly 5. The bottom wall of the U-shaped connector 17 is connected to the main shaft 1, and the opening of the U-shaped connector 17 is located on the extension line of the length direction of the main shaft 1. The assembly 5 is located at the opening of the U-shaped connector 17 and is rotatably connected to the two side walls of the U-shaped connector 17 respectively.

[0059] For the V-shaped assembly 5 described in Embodiment 1, such as Figure 1 and Figure 2 As shown, the corner of the V-shaped fitting 5 is rotatably connected to the two side walls of the U-shaped connector 17.

[0060] Embodiment 3 of the present invention, as follows Figure 5 As shown, the assembly 5 is a linear assembly, with one end of the linear assembly connected to the driven slider 3 being lower than the main shaft 1. The linear assembly is provided with a transition block 18, and the driven slider 3 is provided with an elongated hole 19. The length direction of the elongated hole 19 is perpendicular to the main shaft 1 and extends vertically. The transition block 18 is located within the elongated hole 19. When the assembly 5 rotates, the transition block 18 rotates relative to the elongated hole 19 and moves along the length direction of the elongated hole 19.

[0061] Initially, the elastic element 4 is in its natural state, the driven slider 3 is away from the mounting part 5, and the adapter block 18 is located at the top of the elongated hole 19, so that the swab 100 assembled in the swab assembly hole 7 is in a horizontal or relatively horizontal state, making it convenient for the person to be sampled to wrap the swab 100 with their mouth and wait for the swab 100 to be sampled. When the driving device 6 is started, the driven slider 3 moves along the main shaft 1 towards the mounting part 5, the adapter block 18 rotates in the elongated hole 19 and moves downward along the elongated hole 19, thereby driving the mounting part 5 to rotate, realizing the conversion of the linear movement of the driven slider 3 into the rotation of the mounting part 5 around the main shaft 1, so that the swab 100 assembled in the swab assembly hole 7 tilts upward, so that the swab 100 can touch the throat or tonsils of the person to be sampled for sampling.

[0062] In one specific implementation of this embodiment, the rotation of the assembly 5 is along a vertical plane, such as... Figure 5 As shown, the assembly 5 is rotatably connected to the main shaft 1 via a crank arm 15. Specifically, the crank arm 15 is a right-angle crank arm, with one free end of the crank arm 15 fixedly connected to the end of the main shaft 1, and the other free end extending vertically downward and rotatably connected to the assembly 5.

[0063] like Figure 1 , Figure 4 and Figure 5 As shown in a specific embodiment of the present invention, one end of the assembly 5 where the swab assembly hole 7 is arranged, that is, the end of the assembly 5 away from the driven slider 3, is also provided with a second rotary driver 16; the second rotary driver 16 is provided with a mounting hole (not shown in the figure), the mounting hole cooperates with the swab 100 and is used to assemble the swab 100.

[0064] In one specific embodiment of this invention, the mounting hole is located at the end of the second rotary driver 16 furthest from the mounting part 5 and is used to assemble the swab. Once the swab is assembled into the mounting hole, activating the second rotary driver 16 will drive the swab to rotate.

[0065] In this embodiment, the swab 100 is inserted into the mounting hole. Initially, the elastic element 4 is in its natural state, the driven slider 3 is away from the mounting part 5, and the swab 100 is in a horizontal or relatively horizontal state, making it convenient for the person to be sampled to wrap their mouth around the swab 100 and wait for the swab 100 to collect samples. When the driving device 6 is activated, the driven slider 3 moves along the main shaft 1 towards the mounting part 5 and pushes the mounting part 5 to rotate around the main shaft 1 in a vertical plane. The swab 100 tilts upward and touches the throat or tonsil sampling site of the person to be sampled. The driving device 6 stops, and the first rotary driver 9 and the second rotary driver 16 are activated simultaneously, causing the swab 100 to rotate around the main shaft 1 while rotating along the contact surface of the sampling site inside the mouth of the person to be sampled, thereby effectively improving the accuracy and efficiency of sampling.

[0066] In one specific embodiment of the present invention, the second rotary driver 16 includes a rotary motor.

[0067] In summary, this invention provides a swab sampling mechanism that not only extends the distance between medical personnel and the person being sampled, eliminating the need for medical personnel to hold the swab at close range, but also allows for a more intuitive understanding and judgment of the sampling force by utilizing the compression degree of the elastic element, thus facilitating the control of the sampling force. Furthermore, the swab sampling mechanism has a simple structure, low cost, and facilitates large-scale deployment, reducing its service life and lowering the risk of cross-infection.

[0068] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A swab sampling mechanism, characterized in that, It includes: frame; The main spindle is horizontally arranged above the frame; An active slider is slidably connected to the main shaft; The driven slider is slidably connected to the main shaft; An elastic element is connected to the active slider and the driven slider respectively, and its elastic extension and contraction direction is parallel to the main shaft; The assembly is rotatably connected to the end of the main shaft and located on the side of the driven slider away from the driving slider; one end of the assembly is provided with a swab mounting hole, and the other end is connected to the driven slider in a transmission manner. A driving device is mounted on the frame and connected to the active slider. It is used to drive the active slider to slide along the main shaft, thereby causing the assembly to rotate around the main shaft and causing the swab in the swab assembly hole to tilt upward. The frame is also equipped with a first rotary driver, which is connected to the main shaft and drives the main shaft to rotate. The assembly is provided with a second rotary driver; the second rotary driver is provided with a mounting hole, which mates with the swab; when the swab is assembled into the mounting hole, the second rotary driver drives the swab to rotate.

2. The swab sampling mechanism according to claim 1, characterized in that, The driving device includes: Drive arm; A driver, mounted on the frame and connected to the drive arm, drives the drive arm to move; The direction of movement of the drive arm is parallel to the axial direction of the main shaft; the drive arm is provided with a slot, and the active slider part is located in the slot and is in clearance fit with the slot.

3. The swab sampling mechanism according to claim 1, characterized in that, The assembly is a V-shaped assembly, and the corner of the V-shaped assembly is rotatably connected to the main shaft.

4. The swab sampling mechanism according to claim 3, characterized in that, It also includes a linear connecting rod, one end of which is rotatably connected to the V-shaped assembly, and the other end of which is rotatably connected to the driven slider.

5. The swab sampling mechanism according to claim 1, characterized in that, The assembly includes: The roller is rotatably connected to the main shaft and is also drive-connected to the driven slider. An assembly rod is provided at one end on the circumference of the roller; the swab assembly hole is located at the other end of the assembly rod.

6. The swab sampling mechanism according to claim 5, characterized in that, The roller has multiple toothed grooves along its circumference, and the driven slider has a rack that is parallel to the main shaft and meshes with the toothed grooves.

7. The swab sampling mechanism according to claim 1, characterized in that, The assembly is a straight-line assembly.

8. The swab sampling mechanism according to claim 7, characterized in that, The linear assembly is provided with an adapter block, and the driven slider is provided with an elongated hole, which is perpendicular to the main shaft; the adapter block is located inside the elongated hole; when the assembly rotates, the adapter block rotates relative to the elongated hole and moves along the length direction of the elongated hole.

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