A self-service swab sampling system

Abstract

The present invention relates to a self-service swab sampling system, comprising a base; a swab sampler for clamping and / or releasing a sampling swab; a revolution and rotation compound gear set disposed within the base, one end of the revolution and rotation compound gear set being connected to a lead screw drive motor via a lead screw, and the other end of the revolution and rotation compound gear set being connected to the swab holder; and a controller disposed within the base for controlling the movement of the lead screw drive motor. The present invention enables users to perform standardized self-sampling without the need for assistance from others, and can implement standardized swab sampling and nucleic acid analysis on-site, at home, in the community, in medical institutions at all levels, and in health and epidemic prevention departments, effectively avoiding the influence of human factors.

Description

Technical Field

[0001] The invention relates to a self-service swab sampling system and relates to the field of swab sampling tools. Background Art

[0002] As the epidemic continues to spread, the virus's constant mutations make it even more contagious. Nucleic acid testing has become the most effective means of preventing and controlling the epidemic. However, nucleic acid testing currently relies primarily on manual sampling, and centralized manual sampling increases the risk of transmission. As the number of infections increases, the risk of transmission increases with centralized manual sampling. Furthermore, in high-risk infectious disease prevention and control sampling applications like the novel coronavirus, sampling operators must wear bulky safety protective clothing to conduct sampling, greatly increasing the complexity, workload, and safety risks of sampling. Furthermore, factors such as the sampling operator's psychological state and operational proficiency cannot prevent the sampling effect from being affected.

[0003] To address the safety risks and human factors associated with manual sampling, existing technologies include robotic or robotic arm sampling methods, sampling devices that use AI-guided videos to locate the designated pharyngeal swab sampling site, and fully self-service nasal swab samplers controlled by multiple motors. Examples include the oropharyngeal swab sampling robot developed by the University of Southern Denmark, the German SR-NOCS oropharyngeal / nasopharyngeal swab sampling robot, the "Pengcheng Qinggeng" automated nasopharyngeal swab sampling robot jointly developed by Shenzhen Luohu Hospital Group and a technology company, a nasopharyngeal swab collection robot developed by Taiwanese medical device company Brain Navi, and an AI-guided nucleic acid testing self-service sampling device co-developed by Southern Medical University Shenzhen Hospital. These existing methods are complex, bulky, time-consuming, and expensive, hindering widespread adoption and application. Existing technologies have also developed relatively simple swab collection instruments, but the existing designs lack the functions of opening the mouth and pressing the tongue to limit the teeth, the automatic control function of pharyngeal wall positioning and movement along the pharyngeal wall, the depth and force feedback control protection function, the cross-contamination protection function, etc., and cannot guarantee the stability and reliability of swab sampling, the standardization of the sampling process and the safety of personnel. The sampling process still requires manual assistance to complete the sampling, and is not suitable for promotion and application. Summary of the Invention

[0004] In response to the above problems, the purpose of the present invention is to provide a self-service swab sampling system that can avoid the risk of cross-contamination and human infection, effectively reduce the labor intensity of sampling personnel, allow subjects to take standardized swab samples themselves, and ensure the reliability of swab sampling.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: the present invention provides a self-service swab sampling system, which includes:

[0006] matrix;

[0007] A swab sampler, used for clamping and / or releasing the sampling swab;

[0008] A revolution and rotation compound gear set is disposed in the base body, one end of the revolution and rotation compound gear set is connected to the screw drive motor via a screw, and the other end of the revolution and rotation compound gear set is connected to the swab holder;

[0009] A controller is arranged in the base body and controls the movement of the screw drive motor.

[0010] Furthermore, corresponding to the position of the swab holder, a detachable tongue depressor is provided at the end of the base, and the tongue depressor is used to expand the tube / cavity wall of the sampling object. The tongue depressor adopts two upper and lower separated plate structures, cylindrical tube structures or elliptical tube structures.

[0011] Furthermore, a cross-contamination protection cover is provided on the outside of the base body for wrapping and protecting components other than the sampling swab and the tongue depressor.

[0012] Furthermore, the base also includes a position and / or force feedback device, which is arranged at the end of the base near the swab holder, and the position and / or force feedback device is connected to the controller; wherein the position feedback device adopts an infrared or ultrasonic rangefinder; and the force feedback device adopts a pressure sensor.

[0013] Furthermore, the revolving and rotating compound gear set includes a revolving pinion, a revolving large gear, a rotating pinion, a rotating large gear ring and a universal conversion head; the revolving pinion is connected to the screw of the screw drive motor, and moves with the screw drive motor and drives it to rotate when it engages with the revolving large gear; the rotating pinion is fixed on the revolving large gear, and revolves in a circle with the revolving large gear, and the revolving circle is concentric with the rotating large gear ring. The rotating pinion is meshed and connected with the rotating large gear ring, and the rotating pinion is driven to rotate by the revolving large gear; one end of the universal conversion head is connected to the rotating pinion, and the other end is connected to the swab holder.

[0014] Furthermore, the revolution and rotation compound gear set includes a revolution pinion, a revolution gear, a rotation pinion, a gear structure and a universal joint;

[0015] The revolving pinion is connected to the screw of the screw drive motor, and moves with the screw drive motor and drives the revolving large gear to rotate when it is engaged with the revolving large gear; the rotating pinion is fixed on the revolving large gear, and revolves in a circle with the revolving large gear. The gear structure is concentrically fixed on the central axis of the revolving large gear, and is engaged with the rotating pinion. The rotating pinion is driven to rotate by the revolving large gear; one end of the universal conversion head is connected to the rotating pinion, and the other end is connected to the swab holder.

[0016] Furthermore, the revolution and rotation compound gear set includes a revolution pinion, a revolution gear, a rotation pinion, a universal joint and a motor; the revolution pinion is connected to the screw of the screw drive motor, and moves with the screw drive motor and drives it to rotate when it engages with the revolution gear; the motor is connected to the rotation pinion to drive the swab holder to rotate, and the motor is powered and provides control signals through a slip ring structure to realize the revolution of the revolution gear and the rotation of the rotation pinion at the same time. One end of the universal joint is connected to the rotation pinion, and the other end is connected to the swab holder.

[0017] Furthermore, a switch button is provided on the base, and the switch button is used to control the clamping of the sampling swab, the movement of the sampling swab and the relaxation of the sampling swab. Different switch controls send three position IO instructions of clamping, forward and backward movement and relaxation through the controller, so that the screw drive motor drives the revolving and rotating compound gear set to reach three different position states: top, middle and bottom.

[0018] Furthermore, a sliding rod structure is also provided in the base, and the sliding rod structure includes a guide light axis and a sleeve, the sleeve is provided on the guide light axis, and the sleeve is fixed on the connecting bracket of the revolution and rotation compound gear set, the screw transmission motor includes a screw motor, a screw, a nut and a coupling, which is fixed to the connecting bracket of the revolution and rotation compound gear set through the nut, the screw motor is connected to one end of the screw through the coupling, and the revolution pinion is fixedly connected to the other end of the screw, when the revolution and rotation compound gear set moves forward to reach the revolution pinion position, the revolution pinion engages with the revolution large gear to drive the revolution large gear to rotate, and when the revolution and rotation compound gear set moves in the opposite direction and leaves the revolution pinion position, the revolution large gear no longer rotates.

[0019] Furthermore, photoelectric switches are provided at both the front and rear ends of the base body, and the photoelectric switches are used to feedback the front and rear limit positions of the movement of the screw drive motor.

[0020] The present invention has the following advantages due to the adoption of the above technical solution:

[0021] 1. Compared with the traditional swab sampling method, the self-service swab sampling system of the present invention has the function of fully automatically completing the standardized sampling process. Users can perform standardized sampling for themselves without the assistance of others and without any site environment requirements. It can realize standardized swab sampling nucleic acid analysis on-site, at home, etc., effectively avoiding the influence of human factors.

[0022] 2. The self-service swab sampling system of the present invention adopts a single motor to control the combined motion of the swab's revolution and rotation, realizing the automatic control positioning of the swab head on the pharyngeal wall and the periodic motion along the pharyngeal wall. It is not only simple in structure and convenient and quick in operation, but also ensures that the swab can move along the oropharyngeal wall to rub and scrape closely for sufficient sampling. The swab rotates synchronously to attach the sample to the circumferential surface of the swab head, ensuring the effectiveness and accuracy of the sampling.

[0023] 3. The self-service swab sampling system of the present invention uses an infrared or ultrasonic rangefinder and / or a pressure sensor to provide feedback on the pharyngeal cavity depth, the contact force between the swab head and the pharyngeal cavity wall, etc., which can avoid excessive contact force injuries caused by overshoot of the swab head movement, thereby improving the safety, accuracy and reliability of swab sampling;

[0024] 4. The self-service swab sampling system of the present invention adopts a replaceable disposable flared tongue depressor and a protective cover, which can not only prevent the tongue and teeth from affecting the swab sampling, but also avoid cross contamination.

[0025] In summary, the present invention is simple, convenient, safe, reliable, and low-cost to use, and can be widely used in self-service swab sampling and testing on-site, at home, in the community, in township clinics, and in clinical medical units at all levels, health and epidemic prevention departments, biomedical research, or in other fields, ensuring the standardization, accuracy, reliability, and safety of swab sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a self-service swab sampling system according to an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of the revolution and rotation compound gear set according to an embodiment of the present invention;

[0029] Figure 3 (a) and (b) are schematic structural diagrams of the sliding rod structure according to an embodiment of the present invention;

[0030] Figure 4(a) to (c) are schematic diagrams of the structure and usage status of the swab holder according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" as used in the text may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0032] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0033] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inner side," "outer side," "lower," "upper," etc. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

[0034] In view of the cross-contamination of existing swab sampling, the accuracy, stability and reliability of swab sampling, the standardization of the sampling process and the safety of personnel cannot be guaranteed, and the sampling process still requires the help of others to complete the sampling, etc. The self-service swab sampling system provided by the present invention includes a base; a swab sampler for clamping and / or loosening the sampling swab; a revolution and rotation compound gear set, which is arranged in the base, and one end of the revolution and rotation compound gear set is connected to the screw drive motor through a screw, and the other end of the revolution and rotation compound gear set is connected to the swab clamp; a controller is arranged in the base to control the movement of the screw drive motor. The self-service swab sampling system of the present invention has the function of fully automatically completing the standardized sampling process, which can enable users to perform standardized sampling for themselves without the assistance of others and without site environment requirements. It can realize standardized swab sampling nucleic acid analysis on-site, at home, etc., and effectively avoid the influence of human factors.

[0035] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] like Figure 1 As shown, the self-service swab sampling system 100 provided in this embodiment includes a base screw transmission motor 101 , a revolution and rotation composite gear set 102 , a swab holder 103 and a controller 109 .

[0037] A composite gear set 102 for revolution and rotation is provided in the base, one end of which is connected to a screw drive motor 101 via a screw, and the other end of which is connected to a swab holder 103. The composite gear set 102 for revolution and rotation is controlled by the screw drive motor 101 so that the swab holder 103 can move back and forth and / or revolve and rotate.

[0038] A controller 109 is provided at the bottom of the base for controlling the movement of the screw drive motor 101 .

[0039] In a preferred embodiment, corresponding to the position of the swab holder 103, the end of the base is detachably connected to the flared tongue depressor 104. The base can be detachably connected to the flared tongue depressor 104 by means of a snap or a thread, etc., which is not limited here. The flared tongue depressor 104 is disposable and replaceable to avoid cross contamination.

[0040] Furthermore, the flaring tongue depressor 104 is used to flare the tube / cavity wall of the sampling object, and can adopt two plate-like structures separated upper and lower, and the swab holder 103 is arranged between the two plate-like structures; the flaring tongue depressor 104 can also adopt a simple cylindrical tube or elliptical tube structure, and the swab holder 103 is arranged in the center of the cylindrical tube or elliptical tube structure. As long as it can perform the flaring operation on the tube / cavity wall of the sampling object, it is not limited here.

[0041] Furthermore, the tube / cavity wall of the sampled object can be the tube / cavity wall and surface of the sampled object of the human oral cavity, throat wall, nasal cavity wall, vaginal wall, uterine wall, ear canal wall, human epidermis or other objects; the biological samples sampled by swab include but are not limited to pathogens, tissue cells, exosomes, extracellular vesicles, etc.

[0042] In a preferred embodiment, a position and / or force feedback device 105 is provided near the center of the top of the base body near the tongue depressor 104. The position and / or force feedback devices 105 are connected to a controller 109, which controls the movement of the screw drive motor 101 by obtaining signals from the position and / or force feedback devices 105, wherein:

[0043] The position feedback device may adopt an infrared or ultrasonic rangefinder, which is used to test the depth of the pharyngeal cavity and provide the maximum forward distance for the swab to extend forward;

[0044] The force feedback device may use a pressure sensor to monitor the pressure of the swab when it touches the pharyngeal wall, ensuring that the swab stops moving forward after contacting the pharyngeal wall to avoid overshoot and damage to the pharyngeal wall.

[0045] In a preferred embodiment, a power supply 106 and an indicator light 108 are also provided in the base. The power supply 106 is used to power various electrical devices and can be flexibly powered by batteries, chargers or direct access to the mains. The indicator light 108 is used to indicate whether the power supply 106 has power.

[0046] In a preferred embodiment, a cross-contamination protection cover 110 is further provided on the outside of the base to wrap and protect components other than the sampling swab and the tongue depressor 104. The cross-contamination protection cover 110 is provided with a small window that is transparent to infrared laser or ultrasound at the position and / or force feedback device 105. After the sampling is completed, it can be replaced and used once to ensure that there is no cross contamination.

[0047] In a preferred embodiment, Figure 2As shown, the revolution and rotation compound gear set 102 includes a revolution pinion 1021, a revolution large gear 1022, a rotation pinion 1023, a rotation large gear ring 1024 and a universal conversion head 1025; the revolution pinion 1021 is fixedly connected to the top of the screw of the screw transmission motor 101 and moves with the screw transmission motor 101. When the revolution pinion 1021 moves and engages with the revolution large gear 1022, it drives the revolution large gear 1022 to rotate. The rotation pinion 1023 is fixed on the revolution large gear 1022 through a bearing and performs a circumferential revolution along with the revolution large gear 1022. The revolution circumference is concentric with the rotation large gear ring 1024. The rotation pinion 1023 is meshed with the rotation large gear ring 1024, and the rotation pinion 1023 is driven to rotate by the revolution of the revolution large gear 1022; the universal conversion head 1025 One end is connected to the rotating pinion 1023, and the other end is connected to the swab holder 103. Furthermore, the rotating large gear ring 1024 can also adopt a gear structure, which is concentrically fixed on the central axis of the revolving large gear 1022 and meshed with the rotating small gear 1023. The rotating large gear 1022 rotates and drives the rotating small gear 1023 to rotate at the same time; further, the revolving and rotating composite gear set 102 can also adopt a slip ring structure driven by a motor, and the motor is connected to the rotating small gear 1023 to drive the swab holder 103 to rotate. The motor is powered and provides control signals through the slip ring structure to ensure that the power supply wires and control signal wires will not be intertwined due to the rotation of the revolution and rotation during the revolution and rotation process. It should be noted that the revolving and rotating composite gear set 102 as a whole can be fixed by a connecting bracket 1026, and the details will not be repeated.

[0048] In a preferred embodiment, Figure 3 As shown in (a), a slide rod structure 113 is also provided in the base to improve the smoothness of movement. The slide rod structure 113 includes a guide light shaft 113-1 and a sleeve 113-2. The sleeve 113-2 is provided on the guide light shaft 113-1, and the sleeve 113-2 is fixed on the connecting bracket 1026 of the revolution and rotation compound gear set 102. The screw drive motor 101 includes a screw motor 101-1, a screw 101-2, a nut 101-3 and a coupling 101-4, which is fixed to the connecting bracket 1026 of the revolution and rotation compound gear set 102 through the nut 101-3. The motor 101-1 is connected to one end of the screw 101-2 through the coupling 101-4, and the revolution pinion 1021 is fixed to the other end of the screw 101-2. As shown Figure 3 As shown in (b), when the revolution and rotation compound gear set 102 moves forward to reach the position of the revolution pinion 1021, the revolution pinion 1021 engages with the revolution large gear 1022 to drive the revolution large gear 1022 to rotate. When the revolution and rotation compound gear set 102 moves in the reverse direction and leaves the position of the revolution pinion 1021, the revolution large gear 1022 no longer rotates.

[0049] In a preferred embodiment, photoelectric switches are further provided at the front and rear ends of the base body, including a front photoelectric switch 111-1 and a rear photoelectric switch 111-2, which are used to feedback the front and rear limit positions of the movement of the screw drive motor 101, serving as a second layer of protection to prevent overshoot of the forward and backward movement of the sampling swab and to provide a correction indication of the coordinates of the starting position of the movement.

[0050] Furthermore, two front and rear baffles 114 are provided below the connecting bracket 1026 of the revolution and rotation compound gear set 102. Figure 1 As shown, the baffle 114 is fixedly connected to the connecting bracket 1026 of the revolution and rotation compound gear set 102, and can move back and forth along the screw structure as a whole. When the front end of the baffle 114 reaches the photoelectric switch 111-1, the screw movement reaches the top limit position, and when the rear end of the baffle 114 reaches the photoelectric switch 111-2, the screw movement reaches the bottom limit position.

[0051] In a preferred embodiment, Figure 4 As shown, the swab holder 103 includes a telescopic sleeve 103-1, a holder shaft 103-2, a spring 103-3 and a sliding sleeve 103-4. The holder shaft 103-2 is installed in the telescopic sleeve 103-1 and can slide back and forth. Figure 4 As shown in (a); one end of the clamp shaft 103-2 is connected to the universal conversion head 1025, and the other end of the clamp shaft 103-2 can be used to load and unload the swab. When the clamp shaft 103-2 moves forward to the top of the telescopic sleeve 103-1, it blocks the sliding sleeve 103-4 and compresses the spring 103-3. The fork of the clamp shaft 103-2 is separated from the fastening of the sliding sleeve 103-4 and is in a relaxed state. Figure 4 (c) as shown, easy to load and unload the swab; and when the holder shaft 103-2 moves in the opposite direction to leave the top of the retractable sleeve 103-1, the spring 103-3 pushes the sliding sleeve 103-4 forward to move and tighten the forked head of the holder shaft 103-2 to clamp the swab, as shown Figure 4 As shown in (b), the swab can be easily rotated and revolved periodically, thus meeting the requirements for standardized sampling of the swab.

[0052] In a preferred embodiment, a switch button 107 is provided on the side wall of the base body, and the switch button 107 is used to control the clamping, movement and release of the swab holder 103 . There are three switch buttons, which are used to control the clamping of the sampling swab, the movement of the sampling swab, and the relaxation of the sampling swab. Different switch controls can send three position IO instructions of clamping, forward and backward movement, and relaxation through the controller 109, so that the screw drive motor 101 drives the revolution and rotation compound gear set 102 to reach three different position states: top, middle, and bottom. The top position corresponds to the relaxed state of the swab holder 103, and the swab holder 103 is completely exposed to the flared tongue depressor 104, which is convenient for loading and unloading the swab; the middle position corresponds to the clamping state of the swab holder 103, which is convenient for the screw drive motor 101 to drive the swab forward and backward movement; the bottom position corresponds to the clamping state of the swab holder 103 and the swab is hidden in the flared tongue depressor 104, which is convenient for the subject to open his mouth and put it in his mouth; of course, the functions of the three switch buttons can also be combined into one switch button to control the function cycle switching state, simplifying the structure of the switch button 107, which can be set as needed.

[0053] It should be noted that each structure of this embodiment can be supported and fixed by a corresponding structure. The specific fixing method is not limited as long as it can meet the corresponding functions of the present invention. In order to facilitate use, reduce weight, etc., the base of this embodiment can be implemented by a hollow cylinder. This is just an example and is not limited to this. It can be implemented by a corresponding structure.

[0054] The present invention also provides a method for using the self-service swab sampling system 100, which includes:

[0055] First, the swab holder 103 is controlled to be in the top position so that the swab holder 103 is in a relaxed state, and the sampling swab 112 is inserted into the swab holder 103;

[0056] Then, the swab holder 103 is controlled to be at the bottom position, the sampling swab is clamped and retracted into the tongue depressor 104 for easy placement in the mouth;

[0057] Next, the sampling swab 112 is quickly extended forward, and after reaching the pharyngeal cavity depth position detected by the infrared or ultrasonic rangefinder and / or the pressure sensor senses a large force of the swab head hitting the pharyngeal cavity wall, the sampling swab 112 is driven to rotate and synchronously perform periodic revolution along a certain tube / cavity wall cross-sectional trajectory, and the rotating swab is kept to periodically rub and scrape around the tube / cavity wall of the sampled object to achieve standardized sampling, including but not limited to complying with the new coronavirus specimen collection standard requirements specified in the Novel Coronavirus Pneumonia Prevention and Control Plan (9th Edition) and above and / or other clinical medical, health and epidemic prevention specimen collection standard requirements, which can be specifically set in the sampling control program. After the sampling is completed, the sampling swab is controlled to retract and hide in the tongue depressor 104, and then taken out of the mouth;

[0058] Finally, the sampling swab 112 is quickly extended to the top to loosen the swab holder 103 and expose the sampling swab, making it easier to load and unload the sampling swab 112.

[0059] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In the description of this specification, the reference terms "one embodiment", "further" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of this specification. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A self-service swab sampling system, characterized in that: The sampling system includes: matrix; A swab holder, used to clamp or release the sampling swab; The revolving and rotating compound gear set is arranged in the base body, one end of the revolving and rotating compound gear set is connected to the screw transmission motor through a screw, and the other end of the revolving and rotating compound gear set is connected to the swab holder; wherein, the revolving and rotating compound gear set includes a revolving pinion, a revolving large gear, a rotating pinion, a rotating large gear ring and a universal conversion head; the revolving pinion is connected to the screw of the screw transmission motor, and when it moves with the screw transmission motor and meshes with the revolving large gear, it drives it to rotate; the rotating pinion is fixed on the revolving large gear and revolves in a circle with the revolving large gear, and the revolving circumference is concentric with the rotating large gear ring, and the rotating pinion is meshed and connected with the rotating large gear ring, and the rotating pinion is driven to rotate by the revolving large gear; one end of the universal conversion head is connected to the rotating pinion, and the other end is connected to the swab holder; A controller is arranged in the base body and controls the movement of the screw drive motor.

2. The self-service swab sampling system according to claim 1, characterized in that: Corresponding to the position of the swab holder, the end of the base is detachably provided with a flaring tongue depressor, which is used to flare the tube wall or cavity wall of the sampling object. The flaring tongue depressor adopts two upper and lower separated plate structures, cylindrical tube structures or elliptical tube structures.

3. The self-service swab sampling system according to claim 2, characterized in that: A cross-contamination protection cover is also provided on the outside of the base body for wrapping and protecting other components except the sampling swab and the tongue depressor.

4. The self-service swab sampling system according to claim 1, characterized in that: The base also includes a position and / or force feedback device, which is arranged at the end of the base near the swab holder and is connected to the controller; wherein the position feedback device adopts an infrared or ultrasonic rangefinder; and the force feedback device adopts a pressure sensor.

5. The self-service swab sampling system according to claim 1, characterized in that: The said revolution and rotation compound gear set can also be replaced with one comprising a revolution pinion, a revolution gear, a rotation pinion, a gear structure and a universal joint; The revolving pinion is connected to the screw of the screw drive motor, and moves with the screw drive motor and drives the revolving large gear to rotate when it is engaged with the revolving large gear; the rotating pinion is fixed on the revolving large gear, and revolves in a circle with the revolving large gear. The gear structure is concentrically fixed on the central axis of the revolving large gear, and is engaged with the rotating pinion. The rotating pinion is driven to rotate by the revolving large gear; one end of the universal conversion head is connected to the rotating pinion, and the other end is connected to the swab holder.

6. The self-service swab sampling system according to claim 1, characterized in that: The revolving and rotating compound gear set can also be replaced with a revolving pinion, a revolving gear, a rotating pinion, a universal joint and a motor; the revolving pinion is connected to the screw of the screw drive motor, and moves with the screw drive motor and drives it to rotate when it engages with the revolving gear; the motor is connected to the rotating pinion to drive the swab holder to rotate, and the motor is powered and provides control signals through a slip ring structure to realize the revolving gear and the rotating pinion rotating at the same time. One end of the universal joint is connected to the rotating pinion, and the other end is connected to the swab holder.

7. The self-service swab sampling system according to claim 1, characterized in that: A switch button is also provided on the base, and the switch button is used to control the clamping, movement and relaxation of the sampling swab. Different switch controls send three position IO instructions of clamping, forward and backward movement and relaxation through the controller, so that the screw drive motor drives the revolving and rotating compound gear set to reach three different position states: top, middle and bottom.

8. The self-service swab sampling system according to claim 6 or 7, characterized in that: The cam is fixed to the drive shaft and the gear is mounted on a link cam of the control wheel, the cam being mounted on a link cam of the control wheel.

9. The self-service swab sampling system according to claim 1, characterized in that: Photoelectric switches are provided at both the front and rear ends of the base body, and the photoelectric switches are used to feedback the front and rear limit positions of the movement of the screw drive motor.

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