An artificial posterior pharyngeal wall body fluid sampling device

Abstract

The present invention discloses an artificial posterior pharyngeal wall body fluid sampling device, which includes a sampling device for extending to a sampling point for sampling and a mouth opener for pressing the tongue of a person to be sampled so that the sampling device can clamp a cotton swab to reach the sampling point; the sampling device includes a body, a cotton swab loading and unloading device arranged at the front end of the body; and a control device for controlling sampling, the control device includes: an inertial measurement unit arranged on the body, a central processing unit, a storage unit for storing information, an image acquisition device arranged at the end of the body for acquiring an image of the posterior pharyngeal wall of a person to be tested, and a display device for displaying images. The artificial posterior pharyngeal wall body fluid sampling device described in the present invention has the advantages of simple structure and convenient operation, can effectively reduce operational errors and missed detections, and improve the accuracy of detection.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an artificial posterior pharyngeal wall body fluid sampling device. Background Art

[0002] The novel coronavirus has spread to more than 200 countries around the world. In order to achieve the goal of early detection, early isolation and early treatment, large-scale nucleic acid testing is a very important and effective means. This has been proven by the anti-epidemic practices of many countries and recognized by experts. The main samples for nucleic acid testing come from the body fluids of the posterior pharyngeal wall of the human body. At present, the sampling of such samples depends entirely on manual sampling, that is, medical staff use cotton swabs to penetrate the posterior pharyngeal wall of the sampled person to collect samples. This sampling method needs to be completed at close range, which brings the risk of infection to the sampler. The safest sampling method is for the sampled person to complete the sampling independently without contact with other people. In addition, since it is difficult to see the posterior pharyngeal wall clearly during manual sampling, it is easy to miss the test, that is, the sampled samples are not all from the posterior pharyngeal wall of the sampled person, but only from his saliva. In order to prevent missed detection or misdetection, manual sampling has very high requirements for the operation process to ensure the accuracy of nucleic acid testing. In the case of self-sampling by the sampled person, due to the lack of medical operation experience, it is easy to make operational errors and missed detection. Summary of the invention

[0003] The present invention aims to overcome the technical problems in the prior art that manual sampling has high requirements for the operation process and is prone to inaccurate detection, and provides an artificial posterior pharyngeal wall body fluid sampling device, which can effectively reduce operational errors and missed detections and improve the accuracy of detection. At the same time, it also reduces the difficulty of sampling operation, and allows users to sample for themselves.

[0004] The present invention provides an artificial posterior pharyngeal wall body fluid sampling device, which is characterized by comprising a sampling device for extending to a sampling point for sampling and a mouth opener for pressing the tongue of a person to be sampled so that the sampling device can clamp a cotton swab to reach the sampling point; the sampling device comprises a body, and a cotton swab loading and unloading device arranged at the front end of the body;

[0005] It also includes an inertial measurement unit arranged on the fuselage, a central processing unit, a storage unit for storing information, an image acquisition device arranged at the end of the fuselage for acquiring an image of the posterior pharyngeal wall of the person being tested, and a display device for displaying the image;

[0006] The inertial measurement unit is used to detect the motion acceleration information of the fuselage when sampling, and transmit the motion acceleration information to the central processor and the storage unit in real time;

[0007] The image acquisition device is used to acquire an image of the posterior pharyngeal wall of the detected person and transmit it to the central processor;

[0008] The storage unit is used to store the sampled image information and the ideal image information of the posterior pharyngeal wall;

[0009] The central processor is used to receive the speed information of the inertial measurement unit, and determine that the hand has stopped moving and the sampling cotton swab has reached the sampling point through the acceleration information; it is used to receive the image of the posterior pharyngeal wall of the detected person collected by the image acquisition device, and compare the received image with the ideal image preset in the storage unit, determine and output the sampling area map and the sampling direction indication map to the display device;

[0010] The display device is used to display the image acquired by the image acquisition device, and to display the sampling area diagram and the sampling direction indication diagram given by the central processor.

[0011] As a preferred embodiment, the cotton swab loading and unloading device includes a cavity arranged on the body, and a connecting rod is arranged in the cavity in the body; the front end of the connecting rod is provided with a cotton swab insertion hole, and three elastic metal sheets are connected around the cotton swab insertion hole; the front end of the cavity of the body is provided with a stopper, and an opening is formed at the front end of the cavity for the elastic metal sheet to extend out to an open state and retract to a closed state; the middle part of the connecting rod is provided with a baffle plate, which matches the cavity, and a spring is sleeved on the connecting rod at the front end of the baffle plate, the tail end of the connecting rod is connected to the loading and unloading handle, and the rear end of the cavity of the body is provided with a through hole for the loading and unloading handle to pass through.

[0012] As a preferred embodiment, the mouth opener includes a guide tube and a baffle vertically arranged at the bottom end of the guide tube.

[0013] As a preferred embodiment, it also includes a WIFI module for real-time data transmission, and the WIFI module is used for the central processor and the remote mobile phone or computer control to provide data transmission.

[0014] As a preferred embodiment, the fuselage is in the shape of a straight rod.

[0015] As a preferred embodiment, it further includes a lighting device, which is arranged at the front end of the fuselage.

[0016] As a preferred embodiment, the lighting device is a high-brightness LED.

[0017] As a preferred embodiment, the image acquisition device is a high-definition CMOS micro camera.

[0018] As a preferred embodiment, the display device is a liquid crystal display screen.

[0019] During use of the present invention, the sampling personnel first pushes the cotton swab into the cotton swab insertion hole through the loading and unloading handle. The specific steps are: first push the loading and unloading handle forward, the connecting rod moves forward, the spring is compressed, and the elastic metal sheet opens. At this time, the cotton swab stick can be inserted into the cotton swab insertion hole, and then the loading and unloading handle is released. The connecting rod moves backward under the action of the spring, the elastic metal sheet is deformed, and the cotton swab stick is clamped. After the cotton swab is loaded, the guide tube of the mouth opener is placed into the mouth of the sampled person and the tongue is pressed by the guide tube and the baffle is attached to the lips.

[0020] Before sampling, turn on the power switch. At this time, the image acquisition device and the display device start working. The image acquisition device transmits the collected image of the posterior pharyngeal wall to the central processor and the storage unit. The central processor compares the collected image with the ideal figure to form a sampling area map and a movement direction indication map and transmits it to the display device to display it in the image. At the same time, the sampling operator is guided by the sampling area map and the movement direction indication map given in the video of the display device, and extends the cotton swab through the guide tube of the mouth opener into the posterior pharyngeal wall of the sampled person for sampling. The inertial measurement unit transmits the acceleration information to the central controller. The central controller determines that the hand has stopped moving and the sampling cotton swab has reached the sampling point through the acceleration information. After that, the sampling operator pushes the loading and unloading handle forward to take out the cotton swab. After the sampling process is completed, the sampling device will automatically save the sampling process video in the storage unit for verification.

[0021] Furthermore, by adding a WIFI module, after connecting to the Internet, the sampling process can be monitored remotely through collection or real-time synchronization by computer to prevent sampling failure.

[0022] Further adding lighting devices can make the image collection clearer.

[0023] In the present invention, since the image acquisition device is arranged at the front end of the sampling device, the sampling is controlled collaboratively by the inertial measurement unit, the display device, and the central controller, so that the sampling instruction can be given more accurately and the sampling can be performed. At the same time, it can be judged according to the inertial measurement unit whether the sampling point has been reached, which can improve the accuracy of the sampling and thus judge whether the sampling is successful; at the same time, the display device can add a voice prompt function, and the instruction voice given by the central controller will prompt the sampling operator to complete the sampling process; the display device will also play the sampling area map and the movement direction indication map; the sampling operator is guided by the voice prompt and the video of the display device to insert the cotton swab through the guide tube of the opener to sample the posterior pharyngeal wall.

[0024] The present invention further designs a mouth opener with a three-dimensional spatial support structure specifically according to the spatial structure of the human oral cavity. The guide tube can ensure that the upper and lower jaws cannot be closed when the person being sampled holds the sample in the mouth, while pressing the tongue so that the tongue of the person being sampled cannot interfere with the sampling process. The rear annular anti-swallowing baffle can block the lips and teeth of the person being sampled to prevent accidental swallowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a sampling device of an artificial posterior pharyngeal wall body fluid sampling device according to the present invention;

[0026] Figure 2 This is a diagram showing the structure of a control device for an artificial posterior pharyngeal wall body fluid sampling device according to the present invention;

[0027] Figure 3 It is a front view of a sampling device of an artificial posterior pharyngeal wall body fluid sampling device according to the present invention;

[0028] Figure 4 It is an enlarged end view of the head of the body of the artificial posterior pharyngeal wall body fluid sampling device of the present invention;

[0029] Figure 5a , 5b It is a cross-sectional view of two states of a cotton swab loading and unloading device of an artificial posterior pharyngeal wall body fluid sampling device according to the present invention;

[0030] Figure 6 A three-dimensional diagram of a mouth opener of an artificial posterior pharyngeal wall body fluid sampling device according to the present invention;

[0031] Figure 7 It is a schematic diagram of the posterior pharyngeal wall collected by the artificial posterior pharyngeal wall body fluid sampling device of the present invention;

[0032] Figure 8 It is a schematic diagram of a display device of an artificial posterior pharyngeal wall body fluid sampling device described in the present invention showing a posterior pharyngeal wall sampling area map.

[0033] Reference numerals:

[0034] 10 cotton swab; 100 sampling device; 101 body, 1011 cavity, 1012 stopper, 1013 opening, 1014 through hole; 102 loading and unloading handle; 103 spring; 104 connecting rod, 1041 baffle, 1042 cotton swab insertion hole; 105 elastic metal sheet; 200 mouth opener, 201 guide tube, 202 baffle; 300 inertial measurement unit; 400 central processing unit; 500 storage unit; 600 image acquisition device; 700 display device; 800 lighting device; 900 WIFI module. DETAILED DESCRIPTION

[0035] like Figure 1 As shown in Figure 6, the present invention provides an artificial posterior pharyngeal wall body fluid sampling device, which includes:

[0036] The sampling device 100 and the mouth opener 200; the sampling device 100 is used to extend to the sampling point for sampling, and the mouth opener 200 is used to press the tongue of the sampled person so that the sampling device 100 can hold the cotton swab 10 to reach the sampling point; the sampling device 100 includes a body 101 and a cotton swab loading and unloading device arranged at the front end of the body 101;

[0037] See also Figure 2 The artificial posterior pharyngeal wall body fluid sampling device of the present invention further comprises a control device for controlling sampling, and the control device comprises: an inertial measurement unit 300, a central processing unit 400, a storage unit 500, an image acquisition device 600 and a display device 700 for displaying images;

[0038] The inertial measurement unit (IMU) 300 is provided on the fuselage 101, and is used to detect the acceleration information of the movement of the fuselage 101 during sampling, and transmit the movement acceleration information to the central processor 400 and the storage unit 500 in real time;

[0039] The image acquisition device 600 is provided at the end of the body 101 and is used to acquire the image of the posterior pharyngeal wall of the detected person and transmit the image to the central processor 400; the image acquisition device 600 preferably adopts a high-definition CMOS micro camera;

[0040] The storage unit 500 is used to store sampled image information and ideal image information of the posterior pharyngeal wall; the storage unit 500 may be a TF card or a storage unit may be set in the central processing unit (CPU) 400;

[0041] The central processing unit (CPU) 400 is used to receive the acceleration information of the inertial measurement unit 300, and determine that the sampling device 100 has stopped moving and the sampling cotton swab 10 has reached the sampling point through the acceleration information; it is used to receive the image of the posterior pharyngeal wall of the detected person collected by the image acquisition device 600, and compare the received image with the ideal image preset in the storage unit 500, determine and output the sampling area map and the sampling direction indication map to the display device 700;

[0042] The display device 700 is used to display the image captured by the image acquisition device, and to display the sampling area diagram and the sampling direction indication diagram provided by the central processor 400, and is specifically a liquid crystal display.

[0043] The ideal image is achieved through the machine learning method in AI (artificial intelligence), using the supervised learning BP algorithm: first, 1,000 throat images of different people are collected, and experienced nurses mark the best sampling points in the image to form an ideal image. The labeled image is input into the convolutional neural network and trained using the BP learning algorithm. The trained neural network has the ability to automatically mark the target points in the throat image, and the trained neural network parameters are stored in the storage unit 500, that is, the collected image can be compared with the ideal image and the sampling area map and the sampling direction indication map can be automatically generated.

[0044] In order to collect images more clearly, a lighting device 800 is provided at the front end of the body 101 , and the lighting device 800 may be a high-brightness LED.

[0045] The control device also includes a WIFI module 900 for real-time data transmission, and the WIFI module 900 is used for providing data transmission between the central processor 400 and a remote mobile phone or computer control, thereby realizing remote guidance and monitoring of the sampling process.

[0046] like Figure 5a , 5b As shown, the structure of the cotton swab loading and unloading device is as follows: in this embodiment, the body 101 is in the shape of a straight rod, a cavity 1011 is provided on the body 101, a connecting rod 104 is provided in the cavity 1011 in the body 101, a front end of the connecting rod 104 has a cotton swab insertion hole 1042, and three elastic metal sheets 105 arranged around the center of the connecting rod 104 are connected around the cotton swab insertion hole 1042, and a stopper 1012 is provided at the front end of the cavity on the body 101, so that an opening 1013 is formed at the front end of the cavity 1011 for the elastic metal sheet 105 to extend out to form an open shape and retract to form a closed shape, that is, when the elastic metal sheet 105 extends from the opening 1013, the elastic metal sheet 105 can be retracted to form a closed shape. When the connecting rod 104 is in use, the three elastic metal sheets 105 are in an open state under the action of their own elastic force. When the elastic metal sheets 105 shrink to the opening 1013, they are in a closed state. The middle part of the connecting rod 104 has a baffle 1041, and the baffle 1041 matches the cavity 1011. A spring 103 is sleeved on the connecting rod 104 at the front end of the baffle 1041. The tail end of the connecting rod 104 is connected to the loading and unloading handle 102. When the spring 103 is in a free state, the elastic metal sheet 105 retracts to the opening 1013, and the three elastic metal sheets 105 are in a closed state. The rear end 1011 of the cavity of the fuselage 101 has a through hole 1014 for the loading and unloading handle 102 to pass through. When in use, Figure 5aAs shown, the loading and unloading handle 102 is pushed forward, the baffle 1041 on the connecting rod 104 compresses the spring 103, and the three elastic metal sheets 105 extend from the opening 1013. Under the elastic force of the elastic metal sheet 105 itself, the front end thereof is opened. At this time, the tail end of the cotton swab 10 can be inserted into the cotton swab insertion hole 1042 from the opening of the elastic metal sheet 105, and the loading and unloading handle 102 is released. Figure 5b As shown, under the elastic force of the spring 103 , the connecting rod 104 is retracted, and the elastic metal sheet 105 enters the opening 1013 and is in a closed state, thereby completing the clamping action of the cotton swab 10 .

[0047] like Figure 6 As shown, the mouth opener 200 includes a guide tube 201 and a baffle 202 vertically arranged at the bottom end of the guide tube 201. The guide tube 201 is elliptical and is used to penetrate into the oral cavity and press the tongue of the sampled person. The baffle 202 is used to stop and prevent the user from swallowing by mistake.

[0048] See also Figure 1 In this embodiment, the body is in the shape of a square straight rod, and can obviously also be in the shape of a round straight rod, that is, in the shape of a pen, which has the advantage of being easy to hold. At the same time, the display device 700 is connected by wire and is independently set. Therefore, it can not only be used by medical personnel to take samples from the person being sampled, but also by non-professionals to take samples themselves or give samples to their family members.

[0049] During use, the sampling personnel first install the cotton swab 10, and push the cotton swab 10 into the cotton swab insertion hole 1042 through the loading and unloading handle 102. The specific steps are as follows: first push the loading and unloading handle 102 forward, the connecting rod 104 moves forward, the spring 103 is compressed, and the elastic metal sheet 105 opens. At this time, the cotton swab 10 can be inserted into the cotton swab insertion hole 1042, and then release the loading and unloading handle 102. The connecting rod 104 moves backward under the action of the spring 103, and the elastic metal sheet 105 is deformed to clamp the cotton swab 10. After the cotton swab 10 is loaded, the guide tube 201 of the mouth opener is placed in the mouth of the sampled person and the tongue is pressed by the guide tube 201 and the baffle 202 is attached to the lips. Turn on the power, see Figure 7 , 8 The image acquisition device 600 acquires the image of the posterior pharyngeal wall of the sampled person (eg Figure 7 ) is transmitted to the central processing unit 400, Figure 7 , P2 is the posterior pharyngeal wall, and P3 is the posterior part of the tongue; after receiving the image, the central processing unit 400 compares it with the ideal image preset in the storage unit 500, determines and outputs the sampling area map P1 and the indication map of the sampling direction to the display device 700 (such as Figure 8 shown), Figure 8The middle curve P1 is a sampling area diagram. Under the instruction of the display device 700, the tester's posterior pharynx and the sampling area diagram can be clearly observed. When the sampler's hand reaches the sampling point, the inertial measurement unit 300 detects the speed information and transmits it to the central controller 400. The central controller 400 determines through the acceleration information that the sampling device 100 has stopped moving and the sampling cotton swab 10 has reached the sampling point for accurate sampling. Therefore, the problem of inaccurate sampling can be effectively avoided. After sampling, the staff pushes the loading and unloading handle 9 forward, takes out the cotton swab 10, and the sampling is completed. After the sampling process is completed, the central controller saves the sampling process video of the image acquisition device 600 in the storage unit 500 for verification. After the WIFI module 900 is connected to the network, the sampling process can be remotely and synchronously monitored in real time to prevent sampling failure.

[0050] The above description is only illustrative and not restrictive of the present invention. Those skilled in the art understand that any modification, change or equivalent that can be made without departing from the spirit and scope defined by the claims, such as changing the shape of the fuselage to a cylindrical or elliptical shape, changing the number of lighting devices, will fall within the scope of protection of the present invention.

Claims

1. An artificial posterior pharyngeal wall body fluid sampling device, characterized in that: The invention comprises a sampling device (100) for extending to a sampling point for sampling, and a mouth opener (200) for pressing the tongue of a person to be sampled so that the sampling device (100) can hold a cotton swab (10) and reach the sampling point. The sampling device (100) comprises a body (101) and a cotton swab loading and unloading device arranged at the front end of the body (101); and a control device for controlling sampling, the control device comprising: an inertial measurement unit (300) arranged on the fuselage (101), a central processing unit (400), a storage unit (500) for storing information, an image acquisition device (600) arranged at the end of the fuselage for acquiring an image of the posterior pharyngeal wall of a person being tested, and a display device (700) for displaying the image; The inertial measurement unit (300) is used to detect the motion acceleration information of the fuselage (101) when sampling, and transmit the motion acceleration information to the central processor (400) and the storage unit (500) in real time; The image acquisition device (600) is used to acquire an image of the posterior pharyngeal wall of the detected person and transmit it to the central processor (400); The storage unit (500) is used to store sampled image information and ideal image information of the posterior pharyngeal wall; The central processor (400) is used to receive speed information from the inertial measurement unit (300), and determine, through the acceleration information, that the hand has stopped moving and the sampling cotton swab has reached the sampling point; for receiving an image of the posterior pharyngeal wall of a subject acquired by the image acquisition device (600), comparing the received image with an ideal image preset in the storage unit (500), and determining and outputting a sampling area map and an indication map of the sampling direction to the display device (700); The display device (700) is used to display the image captured by the image capture device, and to display the sampling area diagram and the sampling direction indication diagram provided by the central processor (400).

2. The artificial posterior pharyngeal wall body fluid sampling device according to claim 1, characterized in that: The cotton swab loading and unloading device comprises a cavity (1011) arranged on the body (101), and a connecting rod (104) is arranged in the cavity (1011) in the body (101); the front end of the connecting rod (104) is provided with a cotton swab insertion hole (1042), and three elastic metal sheets (105) are connected around the cotton swab insertion hole (1042); A stopper (1012) is provided at the front end of the cavity (1011) of the body (101), and an opening (1013) is formed at the front end of the cavity (1011) for the elastic metal sheet (105) to extend out to form an open state and retract to form a closed state; a baffle (1041) is provided at the middle portion of the connecting rod (104), the baffle (1041) matches the cavity (1011), a spring (103) is sleeved on the connecting rod (104) at the front end of the baffle (1041), the rear end of the connecting rod (104) is connected to a loading and unloading handle (102), and a through hole (1014) is provided at the rear end of the cavity (1011) of the body (101) for the loading and unloading handle (102) to pass through.

3. The artificial posterior pharyngeal wall body fluid sampling device according to claim 2, characterized in that: The mouth opener comprises a guide tube (201) and a baffle (202) vertically arranged at the bottom end of the guide tube (201).

4. The artificial posterior pharyngeal wall body fluid sampling device according to claim 1, characterized in that: It also includes a WIFI module (900) for real-time data transmission, wherein the WIFI module (900) is used for the central processor (400) and a remote mobile phone or computer to control and provide data transmission.

5. An artificial posterior pharyngeal wall body fluid sampling device according to any one of claims 1 to 4, characterized in that: The fuselage (101) is in the shape of a straight rod.

6. The artificial posterior pharyngeal wall body fluid sampling device according to claim 5, characterized in that: It further comprises a lighting device (800), wherein the lighting device (800) is arranged at the front end of the fuselage (101).

7. The artificial posterior pharyngeal wall body fluid sampling device according to claim 6, characterized in that: The lighting device (800) is a high-brightness LED.

8. An artificial posterior pharyngeal wall body fluid sampling device according to any one of claims 1 to 3, characterized in that: The image acquisition device (600) is a high-definition CMOS micro camera.

9. The artificial posterior pharyngeal wall body fluid sampling device according to claim 6, characterized in that: The display device (700) is a liquid crystal display screen.

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