Oral cavity tester

Abstract

An oral cavity tester disclosed by the present invention comprises a tester body, a switch button, a state indicating lamp and a wireless charging area, one end of the tester body is provided with a split type detection end, one end of the tester body is provided with a butt joint unit, the split type detection end is in threaded connection with the side wall of the butt joint unit, and the switch button is in threaded connection with the butt joint unit. A detection channel is formed in the split type detection end, an expansion opening is formed in an opening of the detection channel, an expansion air bag is installed on the outer side of the split type detection end, and a shielding unit and an outer baffle are installed on the two sides of the split type detection end respectively; through cooperative use of the expansion air bag and the air pressure adjusting unit, the elliptical design of the expansion air bag fits the oral cavity, the two long-diameter ends of the expansion air bag are aligned with the corners of the mouth, and the expansion air bag can be tightly fitted with different oral cavities by cooperating with the air pressure adjusting unit to adjust the internal air pressure, so that the amount of air blown by a detected person flowing away from a detection port can be reduced when a patient is subjected to an air blowing test; and the accuracy of an oral cavity detection result can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an oral testing instrument. Background Art

[0002] At present, the oral cavity, as an important part of the human body, can reflect many aspects of human health information. With the acceleration of the pace of life, people are paying more attention to their own health status. The oral tester is currently one of the fastest ways to detect oral health.

[0003] In this context, oral testers came into being. Among them, the oral mini tester disclosed by the Chinese utility model patent with authorization announcement number CN218848100U. The combination of shell, inner cylinder, circuit board, wireless charging lithium battery and gas sensor brings many conveniences. On the one hand, the wireless charging lithium battery equipped inside breaks the limitation of traditional wired charging, solves the problem of poor contact of USB charging port due to frequent plugging and unplugging of charging cable, and improves user experience; on the other hand, through the coordinated operation of gas sensor, indicator light and controller, the person being tested only needs to blow into the test port, and the gas sensor can keenly capture the gas signal. After processing by the controller, the test result is intuitively presented by the indicator light. The operation is convenient and the tester is small and easy to carry.

[0004] However, with the in-depth application of oral testing technology, existing oral testers have gradually exposed a key defect. When the person being tested blows air into the test port, due to the imperfect design of the test port structure, the mouth cannot be perfectly aligned with the test port and a gap appears, so that the exhaled gas cannot effectively enter the sensing area of ​​the gas sensor, but escapes from the test port. This phenomenon directly causes the sample gas collected by the gas sensor to not fully reflect the true condition of the oral cavity, causing deviations in the test data, and ultimately resulting in insufficient accuracy of the oral test results. Inaccurate test results can easily mislead users' judgment of their own oral health status and delay the discovery and treatment of potential oral diseases.

[0005] To this end, we propose an oral tester. Summary of the invention

[0006] The main purpose of the present invention is to provide an oral testing instrument.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] An oral tester comprises a tester body, a switch button, a status indicator light and a wireless charging area, wherein a split detection end is arranged at one end of the tester body, a docking unit is installed at one end of the tester body, the split detection end is threadedly connected to the side wall of the docking unit, a detection channel is opened in the split detection end, an expansion opening is arranged at the opening of the detection channel, an expansion airbag is installed on the outer side of the split detection end, a shielding unit and an outer baffle plate are respectively installed on both sides of the split detection end, the shielding unit and the outer baffle plate are both installed on the outer side of the split detection end, an air pressure regulating unit is arranged on one side of the shielding unit, an L-shaped connecting air pipe is installed between the air pressure regulating unit and the shielding unit, a limiting unit is fixedly connected to the side wall of the L-shaped connecting air pipe, the limiting unit is rotatably connected to the inner wall of the shielding unit, and an air pressure push injection unit is slidably connected to the inner wall of the air pressure regulating unit.

[0009] A further improvement of the present invention is that two arc openings and two lateral guide grooves are provided on one side of the outer baffle plate, and the arc openings and the lateral guide grooves both correspond to the positions of the expansion openings.

[0010] A further improvement of the present invention is that the inner wall of the air pressure regulating unit is rotatably connected to a lifting and lowering regulating unit, the lifting and lowering regulating unit is threadedly connected to the inner wall of the air pressure injection unit, a driving unit is installed at the bottom of the air pressure regulating unit, an annular groove is provided on the side wall of the lifting and lowering regulating unit, and a limiting annular protrusion corresponding to the position of the annular groove is provided in the air pressure regulating unit.

[0011] A further improvement of the present invention is that two air pressure sensing units are installed in the expansion airbag, the two air pressure sensing units are symmetrically distributed, and the two air pressure sensing units are electrically connected to the driving unit.

[0012] A further improvement of the present invention is that a support unit is installed in the docking unit, a drainage unit is rotatably connected to one side of the support unit, the drainage unit is not in contact with the split detection end, an airflow sensing unit is embedded in one side of the support unit, an LED light bar is installed on the top of the tester body, and the airflow sensing unit is electrically connected to the LED light bar.

[0013] A further improvement of the present invention is that an oral tester comprises the following steps:

[0014] S1. Preparation stage: Check the power of the oral tester. If there is a power indicator, judge according to the indicator. If the power is insufficient, place the tester on the wireless charging base to charge. When the indicator shows that the power is sufficient or reaches the normal use state, check the appearance of the tester to confirm that there is no obvious damage or looseness. In particular, ensure that the surface of the inflatable airbag in contact with the oral cavity is clean and free of foreign matter;

[0015] S2. Preparation before the test: Press the switch button to turn on the tester. The status indicator light will light up, indicating that the device is turned on and in working state. Wait for a while for the device to complete the initialization self-check. If there is no abnormal warning, you can proceed to the next step. Then the tester relaxes, tilts the head slightly forward, and opens the mouth to a comfortable level to facilitate the inflatable airbag to be placed in the mouth;

[0016] S3. Test process: Hold the tester and gently place the inflatable airbag into the tester's mouth, aligning the two ends of the oval long diameter of the outer periphery of the inflatable airbag with the corners of the mouth. The lips naturally and completely wrap the inflatable airbag, and the outer baffle part presses against the teeth. After the inflatable airbag is subjected to force up and down, it will automatically adjust the expansion of both ends to fit the corners of the mouth. The tester blows air into the inflatable airbag steadily and slowly, paying attention to the moderate strength. When blowing, the drainage unit rotates automatically to assist in guiding the airflow into the tester body, while forming negative pressure in the detection channel and the expansion port to reduce the escape of exhaled air. The LED light bar displays different brightness according to the exhalation strength. The tester judges whether the blowing force is appropriate based on this, and reminds to keep blowing steadily until the oral gas sample collection is completed. The gas sensor module inside the tester body detects and analyzes the gas to obtain the oral health test results.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Through the coordinated use of the expansion airbag and the air pressure regulating unit, the elliptical design of the expansion airbag fits the oral cavity, with the two ends of the long diameter aligned with the corners of the mouth, and cooperates with the air pressure regulating unit to adjust the internal air pressure, so that it can fit closely to different oral cavity, so that when the patient blows the air into the test, the amount of gas blown out by the person being tested that flows away from the test port can be reduced, thereby improving the accuracy of the oral cavity test results, so that the sample gas collected by the gas sensor module inside the tester body can more completely reflect the real condition of the oral cavity, improve the accuracy of the test data, and facilitate the accurate judgment of the patient's oral health status, and facilitate the timely discovery of oral diseases and grasp the timing of treatment.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the size of the opening of the detection channel is expanded by the expansion port, and the detection channel uses its smaller inner diameter to reduce the airflow pressure, forming a negative pressure attraction to the expansion port position, so that the exhaled gas can enter the inside of the tester body as much as possible, reducing exhaled air escape and further reducing the amount of gas flowing away from the detection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is an overall composition diagram of an oral testing instrument of the present invention.

[0021] Figure 2 The figure is a schematic diagram of an oral tester of the present invention. Figure 1 .

[0022] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of part A in the middle.

[0023] Figure 4 The figure is a schematic diagram of an oral tester of the present invention. Figure 2 .

[0024] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part B in the middle.

[0025] Figure 6 This is a schematic diagram of an oral testing instrument of the present invention.

[0026] Figure 7 It is an enlarged schematic diagram of part C in Fig. 6 of the present invention.

[0027] In the figure: 1. Tester body; 11. Switch button; 12. Status indicator light; 13. Wireless charging area; 14. Docking unit; 15. LED light bar; 2. Split detection end; 21. Detection channel; 211. Expansion port; 22. Inflatable airbag; 23. Shielding unit; 24. Outer baffle; 241. Arc port; 242. Lateral guide groove; 25. Air pressure sensing unit; 3. Air pressure regulating unit; 31. L-shaped connecting air pipe; 311. Limiting unit; 32. Air pressure injection unit; 33. Lifting and lowering adjustment unit; 331. Annular groove; 34. Driving unit; 4. Support unit; 41. Drainage unit; 42. Air flow sensing unit. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The standard parts used in this application can all be purchased from the market, and special-shaped parts can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, and bonding in the existing technology, and the components used for circuit connection are all conventional models in the existing technology.

[0030] At the same time, in order to clearly express the connection relationship and working principle between the components and highlight the key points, the drawings in the specification are organized and drawn in the form of simple diagrams. One simple diagram can correspond to a variety of materials and actual external structural shapes.

[0031] Example

[0032] See also Figure 1-Figure 7 An oral tester includes a tester body 1, a switch button 11, a status indicator light 12 and a wireless charging area 13. A split detection end 2 is provided at one end of the tester body 1, a docking unit 14 is installed at one end of the tester body 1, the split detection end 2 is threadedly connected to the side wall of the docking unit 14, a detection channel 21 is provided in the split detection end 2, an expansion port 211 is provided at the opening of the detection channel 21, an expansion airbag 22 is installed outside the split detection end 2, and the split detection end 2 are respectively installed with a shielding unit 23 and an outer baffle plate 24, both of which are installed on the outside of the split detection end 2, and an air pressure regulating unit 3 is arranged on one side of the shielding unit 23, and an L-shaped connecting air pipe 31 is installed between the air pressure regulating unit 3 and the shielding unit 23, and a limiting unit 311 is fixedly connected to the side wall of the L-shaped connecting air pipe 31, and the limiting unit 311 is rotatably connected to the inner wall of the shielding unit 23, and a gas pressure push injection unit 32 is slidably connected to the inner wall of the air pressure regulating unit 3.

[0033] In this embodiment:

[0034] The tester body 1 supports the tester, and the tester body 1 is wirelessly magnetically charged through the wireless charging area 13 at the bottom. The switch button 11 controls the on and off of the working state of the tester body 1. The status indicator light 12 indicates the working state of the tester body 1 to remind the user that the tester body 1 is in the on or off state at this time. The tester body 1 detects the gas blown out by the patient through the internal gas sensor module, thereby completing the oral health test.

[0035] The tester body 1 and the split detection end 2 adopt a split design. The tester body 1 is docked with the split detection end 2 through the docking unit 14, which is convenient for disassembly and cleaning of the split detection end 2 and everything thereon. The split detection end 2 clamps the expansion airbag 22 through the shielding unit 23 and the outer baffle plate 24, so that the two sides of the expansion airbag 22 can remain stable, so that the expansion airbag 22 itself can better adapt to the tester's mouth shape. The shielding unit 23 is located at the tail of the expansion airbag 22, and the outer baffle plate 24 is located at the position of the expansion airbag 22 close to the teeth. When the patient is undergoing an oral test, the patient's mouth is opened, and the lips completely wrap the expansion airbag 22. The outer periphery of the expansion airbag 22 is designed as an elliptical shape, so that the two ends with longer diameters can correspond to the corners of the patient's mouth shape, the outer baffle plate 24 is against the teeth, and the lips wrap and squeeze the expansion airbag 22, so that the expansion airbag 22 can be tested by the mouth The lips are pressed tightly, and the inflatable airbag 22 is subjected to greater force in the upper and lower directions and less force at the two ends. At this time, the inflatable airbag 22 is subjected to force in the upper and lower directions to supplement the internal air pressure in the directions of the two ends, so that the two ends of the inflatable airbag 22 can be inflated, so that the two ends of the inflatable airbag 22 can automatically fill the two corners of the tester's mouth, ensuring the tightness of the connection between the inflatable airbag 22 and the mouth, and the detection channel 21 guides the patient's exhaled gas to the inside of the tester body 1 for detection, and the expansion port 211 expands the size of the opening of the detection channel 21, so that when the tester blows, the exhaled air enters the detection channel 21 through the expansion port 211, and the detection channel 21 uses its smaller inner diameter to reduce the airflow pressure, forming a negative pressure attraction to the position of the expansion port 211, so that the exhaled gas can enter the inside of the tester body 1 as much as possible, reduce the exhaled air escape, and further reduce the amount of gas flowing away from the detection port.

[0036] At the same time, the shielding unit 23 supports the air pressure regulating unit 3, etc. The air pressure regulating unit 3 is connected to the shielding unit 23 through the L-shaped connecting air pipe 31 and the limiting unit 311. One end of the L-shaped connecting air pipe 31 extends into the inflatable airbag 22 and is spatially connected thereto. The limiting unit 311 limits the connection between the L-shaped connecting air pipe 31 and the shielding unit 23 to prevent accidental detachment. The air pressure regulating unit 3 adjusts the air pressure in the inflatable airbag 22 by adjusting the position of the air pressure push unit 32 inside itself, so that the expansion coefficient of the inflatable airbag 22 can be adjusted. It can be adjusted to facilitate use by people with different mouth sizes, and the tightness of the connection between the expansion airbag 22 and the mouth is further improved, so that when the patient blows the test, the amount of gas blown out by the tested person flowing away from the test port can be reduced, thereby improving the accuracy of the oral test results, so that the sample gas collected by the gas sensor module inside the tester body 1 can more completely reflect the real condition of the oral cavity, improve the accuracy of the test data, and be conducive to the accurate judgment of the patient's oral health status, and facilitate the timely discovery of oral diseases and grasp the treatment opportunity.

[0037] Among them, two arc openings 241 and two lateral guide grooves 242 are opened on one side of the outer baffle plate 24, and the arc opening 241 and the lateral guide grooves 242 both correspond to the positions of the expansion opening 211; the arc opening 241 makes the contact surface between the outer baffle plate 24 and the patient's teeth form a more considerate state, and the lateral guide grooves 242 are located on both sides of the expansion opening 211, so that the exhaled gas of the test person can be intercepted and guided by the lateral guide grooves 242 when flowing to both sides, so that the airflow can be stably transported into the expansion opening 211 and the detection channel 21 for guidance and detection.

[0038] Among them, the inner wall of the air pressure regulating unit 3 is rotatably connected with a lifting and adjusting unit 33, and the lifting and adjusting unit 33 is threadedly connected to the inner wall of the air pressure push injection unit 32. A driving unit 34 is installed at the bottom of the air pressure regulating unit 3. The side wall of the lifting and adjusting unit 33 is provided with an annular groove 331, and a limiting annular protrusion corresponding to the position of the annular groove 331 is arranged in the air pressure regulating unit 3; the driving unit 34 controls the rotation of the lifting and adjusting unit 33, so that the lifting and adjusting unit 33 can complete the adjustment of the air pressure push injection unit 32. After the tester's mouth is aligned with the expansion airbag 22, the position of the air pressure push injection unit 32 is adjusted by the driving unit 34 and the lifting and adjusting unit 33, so that the expansion airbag 22 can be reduced or expanded to a certain extent, so that it can be more closely connected with the mouth, and the annular groove 331 is connected with the annular protrusion in the air pressure regulating unit 3, so that the position of the lifting and adjusting unit 33 remains stable to prevent the lifting and adjusting unit 33 from shifting.

[0039] Among them, two air pressure sensing units 25 are installed in the expansion airbag 22, and the two air pressure sensing units 25 are symmetrically distributed. The two air pressure sensing units 25 are electrically connected to the driving unit 34; the two air pressure sensing units 25 are at the angle where the expansion airbag 22 and the corners of the patient's mouth are connected, which can effectively prevent the mouth from contacting the air pressure sensing unit 25 when squeezing the expansion airbag 22. The air pressure sensing unit 25 detects the internal air pressure of the expansion airbag 22, so that when the mouth wraps and tightens the expansion airbag 22, the air pressure sensing unit 25 can detect the tight connection between the two, so that the air pressure sensing unit 25 can control the driving unit 34 through the PLC control unit to drive the lifting and lowering adjustment unit 33 to rotate, and automatically complete the position adjustment of the air pressure injection unit 32, so that the expansion airbag 22 can automatically complete expansion or contraction, so that the connection between the expansion airbag 22 and the mouth is tighter and more stable.

[0040] Among them, a support unit 4 is installed in the docking unit 14, and a drainage unit 41 is rotatably connected to one side of the support unit 4, and the drainage unit 41 does not contact the split detection end 2. An airflow sensing unit 42 is embedded on one side of the support unit 4, and an LED light bar 15 is installed on the top of the tester body 1, and the airflow sensing unit 42 is electrically connected to the LED light bar 15; the support unit 4 and the drainage unit 41 are both in the internal space of the docking unit 14, and the drainage unit 41 and the split detection end 2 will not interfere with each other. The airflow sensing unit 42 detects the airflow passing through the docking unit 14, so that when the tester exhales, the airflow sensing unit 42 can be sensed in time, and the airflow sensing unit 42 transmits the exhalation information The PLC control unit controls and starts the motor group of the drainage unit 41, so that the drainage unit 41 can timely guide the airflow to assist in conveying the exhaled air to the inside of the tester body 1, and also generate negative pressure on the detection channel 21 and the expansion port 211 to reduce the escaped exhaled air. At the same time, the airflow sensing unit 42 detects the exhaled flow rate, and the airflow sensing unit 42 transmits the data to the PLC control unit in real time. The PLC control unit displays the data on the LED light bar 15 in real time, so that different parts of the LED light bar 15 can display different lights according to the exhalation strength of the tester, reminding the tester to keep the exhalation within the appropriate force to prevent excessive or insufficient force from affecting the detection effect.

[0041] The working principle of the present invention is:

[0042] First, the tester body 1 is precisely connected to the tester's mouth with the help of the split detection end 2 and its accessories. The tester's lips tightly wrap around the oval expansion airbag 22, and the two ends of its long diameter are just aligned with the corners of the mouth. When the lips are pressed, the expansion airbag 22 is forced up and down, and the internal air pressure squeezes towards the two ends, causing the two ends of the expansion airbag 22 to automatically expand, fill the corners of the mouth, reduce the gap at the corners of the mouth, and ensure a tight fit.

[0043] At the same time, the air pressure regulating unit 3 and other components respond quickly through the real-time detection of the air pressure sensing unit 25, and adjust the internal air pressure of the inflatable airbag 22 in real time, further strengthening the tightness of the connection with the mouth, effectively reducing the escape of gas from the detection port during blowing, and greatly improving the accuracy of oral detection. The exhaled gas is guided to the support unit 4 through the expansion port 211 and the detection channel 21. At this time, the airflow sensing unit 42 keenly captures the airflow information in the docking unit 14. Once the exhalation is detected, the drainage unit 41 immediately rotates rapidly, strongly guides the airflow to accelerate the delivery to the inside of the tester body 1, and simultaneously creates a negative pressure environment in the detection channel 21 and the expansion port 211 area, strongly locks the exhaled air to prevent it from escaping.

[0044] The airflow sensing unit 42 continuously monitors the exhalation flow rate and transmits the data to the PLC control unit in real time. The unit processes the data quickly and drives the LED light bar 15 to present different brightness in different parts according to the exhalation force, intuitively reminding the tester to control the exhalation force to ensure the test effect. Finally, the tester body 1 relies on the internal gas sensor module to deeply analyze the collected gas and complete the oral health test task.

Claims

1. An oral tester, comprising a tester body (1), a switch button (11), a status indicator light (12) and a wireless charging area (13), characterized in that: A split detection end (2) is provided at one end of the tester body (1), a docking unit (14) is installed at one end of the tester body (1), the split detection end (2) is threadedly connected to the side wall of the docking unit (14), a detection channel (21) is provided in the split detection end (2), an expansion opening (211) is provided at the opening of the detection channel (21), an expansion airbag (22) is installed on the outside of the split detection end (2), and a shielding unit (23) and an outer baffle (24) are installed on both sides of the split detection end (2), The shielding unit (23) and the outer baffle plate (24) are both installed on the outside of the split detection end (2); a gas pressure regulating unit (3) is provided on one side of the shielding unit (23); an L-shaped connecting air pipe (31) is installed between the gas pressure regulating unit (3) and the shielding unit (23); a limiting unit (311) is fixedly connected to the side wall of the L-shaped connecting air pipe (31); the limiting unit (311) is rotatably connected to the inner wall of the shielding unit (23); and a gas pressure push injection unit (32) is slidably connected to the inner wall of the gas pressure regulating unit (3).

2. An oral tester according to claim 1, characterized in that: Two arc openings (241) and two lateral guide grooves (242) are provided on one side of the outer baffle plate (24), and the arc openings (241) and the lateral guide grooves (242) both correspond to the positions of the expansion opening (211).

3. An oral tester according to claim 1, characterized in that: The inner wall of the air pressure regulating unit (3) is rotatably connected to a lifting regulating unit (33), the lifting regulating unit (33) is threadedly connected to the inner wall of the air pressure injection unit (32), a driving unit (34) is installed at the bottom of the air pressure regulating unit (3), a side wall of the lifting regulating unit (33) is provided with an annular groove (331), and a limiting annular protrusion corresponding to the position of the annular groove (331) is arranged in the air pressure regulating unit (3).

4. An oral tester according to claim 3, characterized in that: Two air pressure sensing units (25) are installed in the expansion airbag (22), the two air pressure sensing units (25) are symmetrically distributed, and both of the two air pressure sensing units (25) are electrically connected to the driving unit (34).

5. An oral tester according to claim 1, characterized in that: A support unit (4) is installed in the docking unit (14); a drainage unit (41) is rotatably connected to one side of the support unit (4); the drainage unit (41) is not in contact with the split detection end (2); an airflow sensing unit (42) is embeddedly installed on one side of the support unit (4); an LED light bar (15) is installed on the top of the tester body (1); and the airflow sensing unit (42) is electrically connected to the LED light bar (15).

6. An oral tester according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Preparation stage: Check the power of the oral tester. If there is a power indicator light, judge according to the indicator light. If the power is insufficient, place the tester on the wireless charging base for charging. When the indicator light shows that the power is sufficient or reaches the normal use state, check the appearance of the tester to confirm that there is no obvious damage or looseness. In particular, ensure that the surface of the expansion airbag (22) in contact with the oral cavity is clean and free of foreign matter; S2. Preparation before testing: Press the switch button (11) to turn on the tester. At this time, the status indicator light (12) lights up, indicating that the device is turned on and enters the working state. Wait for a while for the device to complete the initialization self-check. If there is no abnormal warning, the next step can be carried out. Then the tester relaxes, tilts the head slightly forward, and opens the mouth to a comfortable level to facilitate the inflatable airbag (22) to be placed in the mouth; S3. Test process: Hold the tester and gently place the inflatable airbag (22) into the tester's mouth, align the two ends of the outer elliptical long diameter of the inflatable airbag (22) with the corners of the mouth, and let the lips naturally and completely wrap the inflatable airbag (22), and the outer baffle (24) is against the teeth. After the inflatable airbag (22) is subjected to force up and down, it will automatically adjust the expansion of the two ends to fit the corners of the mouth. The tester blows air into the inflatable airbag (22) steadily and slowly, paying attention to the moderate strength. When blowing, the drainage unit (41) automatically rotates to assist in guiding the airflow into the tester body (1), and at the same time forms a negative pressure at the detection channel (21) and the expansion port (211) to reduce the escape of exhaled air. The LED light bar (15) displays different brightness according to the exhalation strength. The tester judges whether the blowing force is appropriate based on this, and reminds to keep blowing steadily until the oral gas sample collection is completed. The gas sensor module inside the tester body (1) detects and analyzes the gas to obtain the oral health test results.

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