Sampling device for infectious disease department

Abstract

The invention belongs to the technical field of medical sampling devices, and particularly relates to an infectious disease department sampling device, which comprises a sampling main body, one end of the sampling main body is provided with a sampling nozzle, the sampling nozzle is composed of a bottle body and a nipple type bottle opening, and the nipple type bottle opening is provided with a plurality of sampling ports, so that the sampling device can be used for rapidly opening the mouth of an infant to sample the oral cavity; a sampling assembly is arranged in the sampling main body, and the sampling assembly is used for assisting the sampling nozzle in extracting saliva and sputum in the oral cavity of the infant for sampling, so that the problem that medical personnel often difficultly complete sampling work smoothly because the infant is difficult to actively cooperate with sampling to open the mouth in an existing sampling device is solved; if the infant is forced to open the mouth by pinching the lower jaw, crying and screaming of the infant are easily caused, and in the crying and screaming process, the cotton swab easily stabs the oral cavity of the infant accidentally, so that the sampling efficiency of the saliva or sputum is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical sampling device technology, specifically a sampling device for infectious diseases. Background Technology

[0002] Patients admitted to the Department of Infectious Diseases are mostly infected by different pathogens. In order to identify the pathogens infecting patients as soon as possible, it is necessary to use sampling devices to collect specimens from the patient's pharynx, oral cavity and other parts for bacterial culture or virus isolation to assist in diagnosis and guide the development of treatment measures.

[0003] Currently, when using existing sampling devices to collect pathogens from the oral cavity of infants and young children, medical staff typically hold a sterile cotton swab and gently pinch the infant's jaw with their other hand to help them open their mouth. They then insert the swab into the mouth and gently rotate it to collect saliva or sputum samples. However, in practice, due to their young age and limited cognitive abilities, infants often struggle to cooperate with medical staff by keeping their mouths open, posing significant challenges to sampling. Often, medical staff have to apply slight force to hold the child's jaw open, which can easily cause fear and discomfort, leading to crying and struggling. Once a child starts crying, not only do their oral muscles tense, making sampling difficult, but the risk of injury also increases. Furthermore, the swab can easily accidentally touch the buccal mucosa, palate, or even throat when the child shakes their head, causing soft tissue damage. This can cause anxiety for both the child and parents and significantly reduce the success rate and efficiency of saliva or sputum sample collection, thus affecting subsequent testing and medical judgment.

[0004] Therefore, the present invention provides a sampling device for infectious disease departments. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The sampling device for infectious diseases of the present invention includes a sampling body, a sampling nozzle is installed at one end of the sampling body, the sampling nozzle is composed of a bottle body and a nipple-type bottle mouth, and the nipple-type bottle mouth has multiple sampling ports, which can be used for oral sampling of infants and young children by quickly opening their mouths; the sampling body is provided with a sampling component, and the sampling component is used to assist the sampling nozzle in extracting saliva and sputum samples from the oral cavity of infants and young children. The sampling assembly includes a suction chamber located on one side of the lower end of the sampling body, and a rubber balloon is provided on the inner wall of the suction chamber. An air suction groove is provided on the inner wall of the suction chamber. A first one-way valve is provided at one end of the inner cavity of the air suction groove. The first one-way valve can only be opened by flipping it into the suction chamber. The air suction groove is connected to the inner cavity of the sampling nozzle. Furthermore, by repeatedly pressing the rubber balloon, the suction chamber can be made to generate cyclical positive and negative pressure. Then, the saliva and sputum in the infant's mouth can be sampled through the suction groove and sampling nozzle.

[0007] Preferably, the inner wall of the suction chamber is provided with an exhaust groove, and a second one-way valve is provided at one end of the inner cavity of the exhaust groove, and the second one-way valve can only be opened by flipping it outwards from the exhaust groove.

[0008] Preferably, the sampling body has multiple storage slots at its lower end, and a spring is fixedly connected to the bottom of the inner cavity of each storage slot. A T-shaped sliding column is fixedly connected to one end of the spring, and a pressing plate is fixedly connected to one end of the T-shaped sliding column. The lower end of the pressing plate is fixedly installed with a rubber balloon.

[0009] Preferably, one end of the sampling nozzle is provided with a threaded connector, and the threaded connector is connected to the inner cavity of the sampling nozzle. The threaded connector has a sliding groove inside, and two sealing plates are slidably connected to the inner cavity of the sliding groove. Each of the two sealing plates has a through hole on one side.

[0010] Preferably, the threaded joint has two extrusion columns that are slidably connected to the outside, and one end of the extrusion column passes through the threaded joint and is fixed to the sealing plate. Both sealing plates are provided with a rubber pad layer on the outside.

[0011] Preferably, both sealing plates are L-shaped, and each sealing plate has an elastic element fixedly connected to its lower end, with one end of the elastic element fixedly connected to the other sealing plate.

[0012] Preferably, the sampling body is provided with a rubber handle on the outside, and a baffle is fixedly connected to one end of the sampling body. The baffle has a groove on the outside, and an oral cavity expansion component is provided in the inner cavity of the groove to open the mouth of infants.

[0013] Preferably, the oral cavity expansion assembly includes an oral cavity expansion frame rotatably connected in the inner cavity of the groove. One end of the oral cavity expansion frame is fixedly connected to a U-shaped fixing block. One end of the oral cavity expansion frame is set in a semi-circular arc shape and is provided with a latex pad on the outside, which can open the oral cavity of infants and protect the upper and lower gums of infants and children.

[0014] Preferably, a rotating block is rotatably connected to one side of the inner cavity of the U-shaped fixing block, and a sliding frame is rotatably connected to the lower end of the rotating block. The sliding frame is slidably connected to the outside of the sampling body, and a folded tube is fixedly connected to one end of the sliding frame. The folded tube is connected to the inner cavity of the air intake groove.

[0015] Preferably, a cross groove is provided inside one end of the sampling body, a tension spring is fixedly connected to the bottom of the inner cavity of the cross groove, one end of the tension spring is fixedly connected to the sliding frame, one end of the sliding frame is fixedly connected to the mounting column, and one end of the mounting column is threadedly installed to the threaded joint.

[0016] The beneficial effects of this invention are as follows: 1. The sampling device for infectious diseases of the present invention, during operation, involves holding the sampling body and pressing the pressing plate. The pressing plate then pushes the T-shaped sliding column to compress the spring, causing it to slide into the receiving groove. Simultaneously, the pressing plate presses the rubber balloon, which compresses the gas inside the suction chamber, creating pressure. This pressure opens the second one-way valve in the exhaust groove to complete the exhaust. After releasing the pressing plate, the spring rebounds and pushes the T-shaped sliding column back to its original position. The T-shaped sliding column then drives the pressing plate back to its original position, and the pressing plate simultaneously pulls the rubber balloon back to its original shape, causing the rubber balloon to generate negative pressure suction inside the suction chamber. This negative pressure suction opens the first one-way valve in the suction groove. Subsequently, saliva or sputum from the infant's mouth is extracted through the sampling nozzle and sampling port. The extracted sample is stored in the bottle part inside the sampling nozzle, thereby quickly completing the oral sampling work for infants.

[0017] 2. The infectious disease sampling device of the present invention, by pushing the sliding frame to move, causes the sliding frame to drive the rotating block to move, and at the same time the rotating block pulls the U-shaped fixing block to move, and the U-shaped fixing block causes the oral dilator to rotate in the inner cavity of the baffle. Thus, the oral dilator opens up the infant's mouth during the flipping process. When the sliding frame slides in the inner cavity of the cross groove, the sliding frame simultaneously drives the mounting column to slide out of the sampling body, and the mounting column drives the threaded joint to move. At the same time, the threaded joint drives the sampling nozzle to move, thus allowing the sampling nozzle to penetrate deep into the infant's mouth, making it easier to collect saliva or sputum from the infant's throat, and improving the accuracy of pathogen sampling.

[0018] 3. The infectious disease sampling device of the present invention connects a threaded connector to a sampling body, and pushes a squeezing column into the inner cavity of a chute by the inner wall of the sampling body. Simultaneously, the squeezing column pushes a sealing plate to compress an elastic element, causing the sealing plates to move closer together. This allows the through holes on the two sealing plates to overlap, connecting the inner cavity of the sampling nozzle to the suction groove through the through holes. The sampling assembly can then quickly extract saliva or sputum from the infant's mouth through the through holes and store it in the bottle of the sampling nozzle, effectively improving the sampling efficiency of the infant's oral cavity. After sampling, the sampling nozzle is removed from the inner cavity of the sampling body. The elastic element then pops up the sealing plate, causing the two sealing plates to move away from each other, simultaneously driving the through hole into the inner cavity of the chute, thus sealing the threaded connector. A new sampling nozzle can then be used for subsequent sampling, further improving the sampling efficiency of saliva or sputum from the infant's mouth. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the main view of the present invention; Figure 2 This is a schematic diagram of the overall structure of the invention viewed from the left. Figure 3 This is a half-sectional structural diagram of the sampling body of the present invention; Figure 4 This is a schematic diagram of a half-section of the sampling nozzle of the present invention; Figure 5 This is a schematic diagram of the installation structure of the sealing plate of the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the sampling nozzle of the present invention; In the diagram: 1. Sampling body; 2. Sampling nozzle; 3. Rubber handle; 4. Baffle; 5. Oral dilation assembly; 51. Oral dilation frame; 52. U-shaped fixing block; 53. Rotating block; 54. Sliding frame; 55. Cross slide groove; 56. Tension spring; 57. Mounting column; 6. Sampling assembly; 61. Pressing plate; 62. T-shaped slide column; 63. Storage groove; 64. Spring; 65. Rubber inflation bulb; 66. Suction chamber; 67. Suction groove; 68. Exhaust groove; 7. Sampling port; 8. Squeezing column; 9. First one-way valve; 10. Second one-way valve; 11. Threaded joint; 12. Slide groove; 13. Sealing plate; 14. Through hole; 15. Elastic element. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1, as Figure 1 , Figure 3 and Figure 6 As shown in the embodiment of the present invention, an infectious disease sampling device includes a sampling body 1, a sampling nozzle 2 installed at one end of the sampling body 1, the sampling nozzle 2 is composed of a bottle body and a nipple-type bottle mouth, and the nipple-type bottle mouth is made of latex material and has multiple sampling ports 7, which can be used for rapid oral sampling of infants and young children. The sampling body 1 is provided with a sampling component 6, and the sampling component 6 is used to assist the sampling nozzle 2 in extracting saliva and sputum samples from the oral cavity of infants and young children. The sampling component 6 includes a suction chamber 66 located on one side of the lower end of the sampling body 1. A rubber balloon 65 is provided on the inner wall of the suction chamber 66. An air suction groove 67 is provided on the inner wall of the suction chamber 66. A first one-way valve 9 is provided at one end of the inner cavity of the air suction groove 67. The first one-way valve 9 can only be opened by flipping it in the suction chamber 66. The air suction groove 67 is connected to the inner cavity of the sampling nozzle 2. Furthermore, by repeatedly pressing the rubber balloon 65, the suction chamber 66 can form a cycle of positive and negative pressure, and then the suction groove 67, together with the sampling nozzle 2, can be used to extract saliva and sputum from the infant's mouth for sampling. The inner wall of the suction chamber 66 is provided with an exhaust groove 68. A second one-way valve 10 is provided at one end of the inner cavity of the exhaust groove 68, and the second one-way valve 10 can only be flipped open to the outside of the exhaust groove 68.

[0023] Specifically, in existing technologies, medical staff typically hold a cotton swab while pinching the infant's jaw to open their mouth, then insert the swab into the mouth to collect saliva or sputum for sampling. However, because infants are unlikely to cooperate by opening their mouths for sampling, medical staff often find it difficult to complete the sampling smoothly. If the infant is forced to open their mouth by pinching their jaw, it is easy to cause them to cry and resist. During the crying, the cotton swab may accidentally puncture the infant's mouth, further reducing the sampling efficiency of saliva or sputum.

[0024] In this invention, when performing oral sampling on infants, the sampling nozzle 2 is installed on the sampling body 1. Medical personnel then hold the sampling body 1 and insert the sampling nozzle 2 into the infant's mouth to simulate the difficulty of getting the infant to quickly open their mouth and suckle. While the infant is sucking on the bottle nipple, the medical personnel press the rubber inflator 65, causing it to compress the gas inside the suction chamber 66, creating pressure. Simultaneously, the pressure inside the suction chamber 66 forces the second one-way valve 10 in the exhaust groove 68 to open. When the rubber balloon 65 is reset, it draws air from the suction chamber 66 to create a negative pressure suction. Simultaneously, the negative pressure suction in the suction chamber 66 actuates the first one-way valve 9 in the suction groove 67 to open. Then, saliva and sputum from the infant's mouth are drawn through the sampling nozzle 2 and the sampling port 7. The drawn saliva and sputum are stored in the bottle part inside the sampling nozzle 2, thereby improving the sampling efficiency of infant saliva and sputum and solving the above problems.

[0025] like Figure 3 and Figure 6 As shown, the sampling body 1 has multiple storage slots 63 at its lower end, and a spring 64 is fixedly connected to the bottom of the inner cavity of each storage slot 63. A T-shaped sliding column 62 is fixedly connected to one end of the spring 64, and a pressing plate 61 is fixedly connected to one end of the T-shaped sliding column 62. The lower end of the pressing plate 61 is fixedly installed with a rubber balloon 65.

[0026] Specifically, when sampling saliva or sputum from an infant's mouth, the sampling body 1 is held and the pressing plate 61 is pressed, causing the pressing plate 61 to push the T-shaped slide column 62 to compress the spring 64 into the receiving groove 63. At the same time, the pressing plate 61 presses the rubber inflator 65, causing the rubber inflator 65 to compress the gas inside the suction chamber 66, creating pressure. Simultaneously, the pressure inside the suction chamber 66 forces the second one-way valve 10 in the exhaust groove 68 to open and discharge the gas. After releasing the pressing plate 61, the spring 64 springs up the T-shaped slide column 62 to move back to its original position, and the T-shaped slide column 62 moves back to its original position. The sliding column 62 pushes the pressing plate 61 to move and reset. At the same time, the pressing plate 61 drives the rubber balloon 65 to reset, which in turn causes the rubber balloon 65 to draw air from the suction chamber 66 to form a negative pressure suction. The negative pressure suction in the suction chamber 66 will then draw the first one-way valve 9 in the suction groove 67 to open. Then, saliva or sputum from the infant's mouth is drawn through the sampling nozzle 2 and the sampling port 7. The drawn saliva or sputum is stored in the bottle part in the inner cavity of the sampling nozzle 2, thereby quickly completing the oral sampling of the infant.

[0027] like Figures 3 to 5 As shown, a threaded connector 11 is provided at one end of the sampling nozzle 2, and the threaded connector 11 is connected to the inner cavity of the sampling nozzle 2. A sliding groove 12 is provided inside the threaded connector 11, and two sealing plates 13 are slidably connected inside the sliding groove 12. A through hole 14 is provided on one side of each of the two sealing plates 13. Two extrusion columns 8 are slidably connected to the outside of the threaded connector 11, and one end of the extrusion column 8 passes through the threaded connector 11 and is fixedly connected to the sealing plate 13. A rubber pad is provided on the outside of each of the two sealing plates 13. Both sealing plates 13 are L-shaped, and an elastic element 15 is fixedly connected to the lower end of each sealing plate 13. One end of the elastic element 15 is fixedly connected to the other sealing plate 13.

[0028] Specifically, when sampling saliva or sputum from an infant's mouth, the threaded connector 11 is threaded onto the sampling body 1, and the inner wall of the sampling body 1 abuts against the squeezing column 8. This pushes the squeezing column 8 into the inner cavity of the slide groove 12. Simultaneously, the squeezing column 8 pushes the sealing plates 13 to press against the elastic element 15, causing the sealing plates 13 to move closer together. This results in the overlapping of the through holes 14 in the two sealing plates 13, allowing the inner cavity of the sampling nozzle 2 to connect with the suction groove 67 through the through holes 14. This enables the sampling assembly 6 to quickly extract saliva from the infant's mouth through the through holes 14. The saliva or sputum is stored inside the bottle of the sampling nozzle 2, which improves the sampling efficiency of infants' oral cavity. After the sampling is completed, the sampling nozzle 2 is removed from the inner cavity of the sampling body 1. At the same time, the sealing plate 13 is lifted by the elastic element 15, so that the two sealing plates 13 move away from each other and the sealing plate 13 drives the through hole 14 into the inner cavity of the slide groove 12, thereby sealing the threaded joint 11 to facilitate the storage of the collected infant saliva or sputum. At the same time, a new sampling nozzle 2 is replaced for subsequent sampling, thereby improving the sampling efficiency of infant saliva or sputum.

[0029] Example 2, as Figure 1 and Figure 3 As shown, a rubber handle 3 is provided on the outside of the sampling body 1, and a baffle 4 is fixedly connected to one end of the sampling body 1. A groove is provided on the outside of the baffle 4, and an oral cavity expansion component 5 is provided in the inner cavity of the groove to open the mouth of infants and young children.

[0030] like Figure 3 and Figure 6 As shown, the oral cavity expansion assembly 5 includes an oral cavity expansion frame 51 rotatably connected in the inner cavity of the groove. One end of the oral cavity expansion frame 51 is fixedly connected to a U-shaped fixing block 52. One end of the oral cavity expansion frame 51 is set in a semi-circular arc shape and is provided with a latex pad on the outside, which can open up the oral cavity of infants and protect the upper and lower gums of infants.

[0031] Specifically, after the infant sucking column sampling mouthpiece 2 is inserted, pressing the U-shaped fixing block 52 causes the oral dilator 51 to flip, which in turn supports the upper and lower jaws of the infant's mouth, allowing the infant's mouth to open. The oral dilator 51 is equipped with a latex pad, which protects the infant's upper and lower jaws while opening the mouth, preventing the rigid oral dilator 51 from causing wear or tear on the jaws. Furthermore, the oral dilator 51 also presses down on the tongue while opening the infant's mouth, preventing tongue protrusion. The sampling nozzle 2 affects the sampling of saliva or sputum in the infant's mouth, thus solving the problem that existing sampling devices for infectious diseases typically use cotton swabs to collect saliva or sputum from infants' mouths. However, it is difficult to get infants to cooperate by opening their mouths, and the infants' mouths are often forced open, causing them to bite the cotton swab during oral sampling, which affects the oral sampling process. Moreover, if the infant's tongue is not pressed down during the sampling process, the infant is likely to lick the cotton swab with their tongue, which increases the difficulty of oral sampling for infants.

[0032] like Figure 3 and Figure 6 As shown, a rotating block 53 is rotatably connected to one side of the inner cavity of the U-shaped fixed block 52. A sliding frame 54 is rotatably connected to the lower end of the rotating block 53. The sliding frame 54 is slidably connected to the outside of the sampling body 1. A folded tube is fixedly connected to one end of the sliding frame 54, and the other end of the folded tube is connected to the inner cavity of the air intake groove 67. A cross groove 55 is opened inside one end of the sampling body 1. A tension spring 56 is fixedly connected to the bottom of the inner cavity of the cross groove 55. One end of the tension spring 56 is fixedly connected to the sliding frame 54. A mounting post 57 is fixedly connected to one end of the sliding frame 54. One end of the mounting post 57 is threadedly installed to the threaded joint 11.

[0033] Specifically, after the infant sucking column sampling nozzle 2, the sliding frame 54 is pushed to move, causing the sliding frame 54 to drive the rotating block 53 to move. Simultaneously, the rotating block 53 pulls the U-shaped fixing block 52 to move, causing the U-shaped fixing block 52 to drive the oral cavity dilator 51 to rotate within the baffle 4. This allows the oral cavity dilator 51 to open and support the infant's mouth during the flipping process. While the sliding frame 54 slides within the cross groove 55, it simultaneously drives the mounting column 57 to slide out of the sampling body 1, causing the mounting column 57 to drive the threaded connector 11 to move. The threaded connector 11 drives the sampling nozzle 2 to move, thereby allowing the sampling nozzle 2 to penetrate deeper into the infant's mouth. This facilitates the sampling nozzle 2 in collecting saliva or sputum from the infant's throat, improving the accuracy of pathogen sampling. This solves the problem that existing sampling devices for infectious diseases, when sampling saliva or sputum from infants, often fail to open the infant's mouth properly and insert the sampling head deep into the infant's throat. As a result, the collected saliva or sputum is easily mixed with bacteria on the surface of the infant's tongue, thus interfering with the target pathogen and affecting the subsequent detection results of the target pathogen.

[0034] Working principle: When sampling saliva or sputum from an infant's mouth, the sampling body 1 is held and the pressing plate 61 is pressed. The pressing plate 61 pushes the T-shaped sliding column 62 to compress the spring 64 into the receiving groove 63. At the same time, the pressing plate 61 presses the rubber inflator 65, which compresses the gas in the suction chamber 66, creating pressure. The pressure in the suction chamber 66 forces the second one-way valve 10 in the exhaust groove 68 to open and discharge the gas. After releasing the pressing plate 61, the spring 64 springs up the T-shaped sliding column 62 to move back to its original position, and the T-shaped sliding column 64 moves back to its original position. The sliding column 62 pushes the pressing plate 61 to move and reset. At the same time, the pressing plate 61 drives the rubber balloon 65 to reset, which in turn causes the rubber balloon 65 to draw air from the suction chamber 66 to form a negative pressure suction. The negative pressure suction in the suction chamber 66 will then draw the first one-way valve 9 in the suction groove 67 to open. Then, saliva or sputum from the infant's mouth is drawn through the sampling nozzle 2 and the sampling port 7. The drawn saliva or sputum is stored in the bottle part in the inner cavity of the sampling nozzle 2, thereby quickly completing the oral sampling of the infant. After the infant sucking column sampling mouthpiece 2 is inserted, the U-shaped fixing block 52 is pressed to rotate the oral dilator 51, which supports the upper and lower jaws of the infant's mouth, allowing the infant's mouth to open. The oral dilator 51 is equipped with a latex pad, which can protect the infant's upper and lower jaws while opening the infant's mouth, preventing the hard oral dilator 51 from causing wear or tear on the upper and lower jaws when opening the infant's mouth. In addition, the oral dilator 51 can also press down on the infant's tongue when opening the infant's mouth, preventing the tongue from interfering with the sampling mouthpiece 2's sampling of saliva or sputum. After the infant sucking column sampling nozzle 2 is inserted, the sliding frame 54 is pushed to move, which in turn moves the rotating block 53. At the same time, the rotating block 53 pulls the U-shaped fixing block 52 to move, and the U-shaped fixing block 52 moves the oral cavity dilator 51 within the baffle 4. As the oral cavity dilator 51 flips, it opens and supports the infant's mouth. When the sliding frame 54 slides within the cross groove 55, it simultaneously moves the mounting column 57 out of the sampling body 1, and the mounting column 57 moves the threaded connector 11. At the same time, the threaded connector 11 moves the sampling nozzle 2, which then penetrates deeper into the infant's mouth. This facilitates the sampling nozzle 2 in collecting saliva or sputum from the infant's throat, improving the accuracy of pathogen sampling.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for infectious disease departments, characterized in that: The sampling body (1) includes a sampling nozzle (2) installed at one end of the sampling body (1). The sampling nozzle (2) consists of a bottle body and a nipple-type bottle mouth, and the nipple-type bottle mouth has multiple sampling ports (7) which can be used for oral sampling of infants and young children by opening their mouths quickly. The sampling body (1) is equipped with a sampling component (6), and the sampling component (6) is used to assist the sampling nozzle (2) in extracting saliva and sputum samples from the oral cavity of infants and young children. The sampling component (6) includes a suction chamber (66) located on one side of the lower end of the sampling body (1), and a rubber balloon (65) is provided on the inner wall of the suction chamber (66). An air suction groove (67) is provided on the inner wall of the suction chamber (66). A first one-way valve (9) is provided at one end of the inner cavity of the air suction groove (67), and the first one-way valve (9) can only be flipped open towards the suction chamber (66). The air suction groove (67) is connected to the inner cavity of the sampling nozzle (2). Furthermore, by repeatedly pressing the rubber balloon (65), the suction chamber (66) can form a cycle of positive and negative pressure, and then the saliva and sputum in the infant's mouth can be sampled by the suction groove (67) in conjunction with the sampling nozzle (2).

2. The sampling device for infectious disease departments according to claim 1, characterized in that: The inner wall of the suction chamber (66) is provided with an exhaust groove (68), and a second one-way valve (10) is provided at one end of the inner cavity of the exhaust groove (68), and the second one-way valve (10) can only be flipped open to the outside of the exhaust groove (68).

3. The sampling device for infectious disease departments according to claim 1, characterized in that: The sampling body (1) has multiple storage slots (63) at its lower end, and each storage slot (63) has a spring (64) fixedly connected to the bottom of its inner cavity. One end of the spring (64) is fixedly connected to a T-shaped sliding column (62), and one end of the T-shaped sliding column (62) is fixedly connected to a pressing plate (61). The lower end of the pressing plate (61) is fixedly installed with a rubber balloon (65).

4. The sampling device for infectious disease departments according to claim 1, characterized in that: The sampling nozzle (2) is provided with a threaded connector (11) at one end, and the threaded connector (11) is connected to the inner cavity of the sampling nozzle (2). The threaded connector (11) is provided with a sliding groove (12), and two sealing plates (13) are slidably connected to the inner cavity of the sliding groove (12). Both sealing plates (13) are provided with through holes (14) on one side.

5. The sampling device for infectious disease departments according to claim 4, characterized in that: The threaded joint (11) is externally slidably connected to two extrusion columns (8), and one end of the extrusion column (8) passes through the threaded joint (11) and is fixedly connected to the sealing plate (13). Both sealing plates (13) are provided with rubber pads on their exterior.

6. The sampling device for infectious disease departments according to claim 5, characterized in that: Both sealing plates (13) are L-shaped, and each sealing plate (13) has an elastic element (15) fixedly connected to its lower end, and one end of the elastic element (15) is fixedly connected to the other sealing plate (13).

7. The sampling device for infectious disease departments according to claim 1, characterized in that: The sampling body (1) is provided with a rubber handle (3) on the outside. A baffle (4) is fixed to one end of the sampling body (1). A groove is provided on the outside of the baffle (4), and an oral cavity expansion component (5) is provided in the inner cavity of the groove to open the oral cavity of infants.

8. The sampling device for infectious disease departments according to claim 7, characterized in that: The oral cavity expansion assembly (5) includes an oral cavity expansion frame (51) rotatably connected in the inner cavity of the groove. One end of the oral cavity expansion frame (51) is fixed with a U-shaped fixing block (52). One end of the oral cavity expansion frame (51) is set in a semi-circular arc shape and is provided with a latex pad on the outside, which can open up the oral cavity of infants and protect the upper and lower gums of infants.

9. The sampling device for infectious disease departments according to claim 8, characterized in that: A rotating block (53) is rotatably connected to one side of the inner cavity of the U-shaped fixed block (52). A sliding frame (54) is rotatably connected to the lower end of the rotating block (53). The sliding frame (54) is slidably connected to the outside of the sampling body (1). A folding tube is fixedly connected to one end of the sliding frame (54), and one end of the folding tube is connected to the inner cavity of the air intake groove (67).

10. The sampling device for infectious disease departments according to claim 9, characterized in that: The sampling body (1) has a cross groove (55) inside one end. A tension spring (56) is fixedly connected to the bottom of the inner cavity of the cross groove (55). One end of the tension spring (56) is fixedly connected to the sliding frame (54). One end of the sliding frame (54) is fixedly connected to the mounting post (57). One end of the mounting post (57) is threadedly installed to the threaded joint (11).

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