A nasal breathing function detection device

Abstract

The utility model relates to a medical device, and discloses a nasal respiratory function detection device, comprising an adapter, a pressure difference detection mechanism and a flow rate detection mechanism; one end of the adapter is provided with a first mounting part and a second mounting part, and nasal tubes are detachably mounted on the first mounting part and the second mounting part, respectively; the pressure difference detection mechanism is communicated with the first mounting part and the second mounting part, and the flow rate detection mechanism is communicated with the second mounting part; the adapter is rotatably connected to one end of the flow rate detection mechanism, and the flow rate detection mechanism is communicated with the outside; the pressure difference detection mechanism is connected to the flow rate detection mechanism; the pressure difference detection mechanism measures the pressure difference between the front and rear nasal cavities; the flow rate detection device can measure the flow rate of the gas flowing out of the nasal cavity; by setting two nasal tubes to be directly inserted into the nostrils for measurement, adjusting the angle of the nasal tubes inserted into the nostrils and replacing the appropriate nasal tubes, the comfort of use can be adjusted, and when replacing the nostrils to be detected, it is only necessary to rotate the adapter to change the position of the nasal tube, which is hygienic, convenient and easy to operate.

Description

Technical Field

[0001] The utility model relates to a medical device, in particular to a nasal cavity respiratory function detection device. Background Art

[0002] At present, many diseases can cause nasal symptoms, such as nasal congestion, runny nose, etc. During clinical diagnosis, the patient's nasal health can be assessed by measuring the respiratory resistance and respiratory flow of the patient's nose.

[0003] Nasal resistance refers to the pressure required to push a certain volume of gas in the nasal cavity a certain distance; existing respiratory pressure measuring devices mainly use the following sampling method: sampling is performed through a special mask with a nasal tube inside the mask, and the nasal flow is read by the corresponding sensor by inserting the nasal tube into the left and right nasal cavities respectively; this method requires manual touching of the nasal tube every time the nostril is changed for testing, which is not ideal for hygiene, and the masks are all mass-produced, and each person's face is different. Glasses need to be removed when using, which causes discomfort to different people when using. Utility Model Content

[0004] The utility model aims to provide a nasal respiratory function detection device. During the detection process, the nasal tube angle can be adjusted and nasal tubes of different models can be replaced according to the actual situation of the user, so as to improve the comfort of use, ensure hygiene and convenient operation.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a nasal respiratory function detection device, including an adapter, a pressure difference detection mechanism and a flow rate detection mechanism; one end of the adapter is provided with a first mounting part and a second mounting part, and nasal tubes are detachably installed on the first mounting part and the second mounting part respectively; the pressure difference detection mechanism is connected with the first mounting part and the second mounting part respectively, and the flow rate detection mechanism is connected with the second mounting part; the adapter is rotatably connected to one end of the flow rate detection mechanism, and the flow rate detection mechanism is connected with the outside world; the pressure difference detection mechanism is connected with the flow rate detection mechanism.

[0006] Preferably, a partition is provided inside the adapter, and the partition divides the inside of the adapter into a first chamber and a second chamber, the first mounting portion is communicated with the first chamber, and the second mounting portion is communicated with the second chamber.

[0007] Furthermore, two first pressure ports are opened on the side of the adapter, and the first chamber and the second chamber are respectively connected to the pressure difference detection mechanism through the two first pressure ports; a connecting port is opened at the other end of the adapter, and the second chamber is connected to the flow rate detection mechanism through the connecting port.

[0008] Preferably, the pressure difference detection mechanism comprises two first pressure taking tubes, one end of each of the first pressure taking tubes is connected to the adapter, and the other end of each of the first pressure taking tubes is provided with a first pressure sensor.

[0009] Furthermore, the pressure difference detection mechanism also includes a shell, the first pressure sensor is arranged inside the shell, and the shell is connected to the flow rate detection mechanism.

[0010] Furthermore, a PCB board is provided inside the shell, and the pressure difference detection mechanism and the flow rate detection mechanism are electrically connected to the PCB board.

[0011] Preferably, the flow velocity detection mechanism includes a first connecting tube, a detection device and a second connecting tube arranged in sequence along the air flow direction; one end of the first connecting tube is connected to the adapter, and the other end is connected to one end of the second connecting tube, the detection device is arranged at the connection between the first connecting tube and the second connecting tube, and the other end of the second connecting tube is connected to the outside.

[0012] Furthermore, a second pressure taking port is provided on the side of the first connecting tube and the second connecting tube; the detection device includes a screen arranged along the width direction of the first connecting tube, and two second pressure taking tubes; one end of the second pressure taking tube is connected to the second pressure taking port, and the other end is provided with a second pressure sensor.

[0013] Furthermore, the device also includes a heating device for heating the screen.

[0014] Preferably, a filter is provided between the adapter and the flow rate detection mechanism.

[0015] Compared with the prior art, the nasal respiratory function detection device of the utility model embodiment has the following beneficial effects: the two nasal tubes are respectively connected to the left and right nostrils. When detecting the left nostril, the second mounting part is connected to the left nostril through the nasal tube, and the first mounting part is connected to the right nostril; since the pressure difference detection mechanism is not connected to the outside world, there is no gas flow in the first mounting part and the pressure difference detection mechanism. At this time, the pressure difference detection mechanism connected to the right nostril is connected to the nasopharynx (i.e., the posterior nasal cavity), and the pressure value at the nasopharynx can be directly measured; since the flow rate detection mechanism is connected to the outside world, the gas only flows through the nasal tube and the flow rate detection mechanism of the left nostril. At this time, the pressure difference detection mechanism connected to the second mounting part can measure the pressure value of the front nasal cavity (at the nostril), and the two pressure values ​​can be subtracted to obtain the pressure difference between the front and rear nasal cavities; the exhaled airflow can measure the gas flow rate flowing out of the nasal cavity through the flow rate detection device, and the nasal resistance can be obtained by dividing the difference between the front and rear nasal cavity pressures by the gas flow rate in the nasal cavity. By setting up two nasal tubes to directly insert into the nostrils for measurement, there is no need to set up structures such as masks. The comfort of use can be adjusted by adjusting the angle at which the nasal tubes are inserted into the nostrils and replacing appropriate nasal tubes. When changing the nostrils to be tested, you only need to rotate the adapter to change the position of the nasal tube. It is hygienic, convenient and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view of the nasal respiratory function detection device according to an embodiment of the utility model.

[0017] Figure 2 It is a front view of the nasal respiratory function detection device according to an embodiment of the utility model.

[0018] Figure 3 It is a cross-sectional view of the adapter in the nasal respiratory function detection device according to the embodiment of the utility model.

[0019] Figure 4 This is a nasal breathing function detection device according to an embodiment of the utility model. Figure 2 Cross-sectional view at AA in the middle.

[0020] Figure 5 This is a nasal breathing function detection device according to an embodiment of the utility model. Figure 4 Enlarged view of point B in the middle.

[0021] Figure 6 It is a schematic diagram of the disassembled structure of the nasal respiratory function detection device according to an embodiment of the utility model.

[0022] In the figure, 1. adapter; 11. first mounting part; 12. second mounting part; 13. partition; 14. first chamber; 15. second chamber; 16. first pressure port; 2. differential pressure detection mechanism; 21. first pressure tube; 22. first pressure sensor; 23. shell; 3. flow rate detection mechanism; 31. first connecting tube; 32. detection device; 33. second connecting tube; 34. second pressure port; 35. screen; 36. second pressure sensor; 37. soft rubber seal; 38. sealing sleeve; 4. nose tube; 5. heating device; 6. PCB board; 7. filter. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", etc. used in the present invention to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] like Figure 1-6 As shown, a nasal respiratory function detection device of a preferred embodiment of the utility model includes an adapter 1, a pressure difference detection mechanism 2 and a flow rate detection mechanism 3; one end of the adapter 1 is provided with a first mounting portion 11 and a second mounting portion 12, and a nasal tube 4 is detachably mounted on the first mounting portion 11 and the second mounting portion 12 respectively; the pressure difference detection mechanism 2 is connected to the first mounting portion 11 and the second mounting portion 12 respectively, and the flow rate detection mechanism 3 is connected to the second mounting portion 12; the adapter 1 is rotatably connected to one end of the flow rate detection mechanism 3, and the flow rate detection mechanism 3 is connected to the outside; the pressure difference detection mechanism 2 is connected to the flow rate detection mechanism 3.

[0026] Specifically, the nasal tube 4 can be selected according to the shape of the user's nose to improve the comfort of use; a first mounting portion 11 and a second mounting portion 12 are provided at one end of the adapter 1, and the nasal tube 4 can be detachably mounted on the first mounting portion 11 and the second mounting portion 12, respectively, and a space for gas flow is provided inside the adapter 1; the nasal tube 4 on the side connected to the first mounting portion 11 is only connected to the pressure difference detection mechanism 2, and since the pressure difference detection mechanism 2 is not connected to the outside world, during the test, the pressure difference detection mechanism 2 provided in communication with the first mounting portion 11 is directly connected to the outside world. The user's nasopharynx is connected, and the pressure value of the user's nasopharynx can be directly measured; the second installation part 12 is connected to the pressure difference detection mechanism 2 and the flow rate detection mechanism 3 through the adapter 1 respectively. Since the flow rate detection mechanism 3 is connected to the outside, the gas flows through the nasal cavity, nasal tube 4, the second installation part 12, the adapter 1, and the flow rate detection mechanism 3 during exhalation. The pressure difference detection mechanism 2 connected to the second installation part 12 can measure the pressure value at the nostril (front nasal cavity), and the pressure difference value between the front and back nasal cavities can be obtained by subtracting the two pressure values ​​measured by the pressure difference detection mechanism 2.

[0027] When the user exhales, only the flow velocity detection mechanism 3 is connected to the outside world, and the exhaled gas is discharged through the second mounting portion 12 to the flow velocity detection mechanism 3. The gas flow velocity in the flow velocity detection mechanism 3 is the same as the gas flow velocity in the nasal cavity. The gas flow velocity in the nasal cavity can be measured by the flow velocity detection mechanism 3; the nasal resistance value can be obtained by dividing the pressure difference between the front and rear nasal cavities by the flow velocity value of the gas in the nasal cavity.

[0028] The pressure difference detection mechanism 2 is connected to the flow velocity detection mechanism 3, and the adapter 1 is rotatably connected to one end of the flow velocity detection mechanism 3, so that the adapter 1 can rotate 180° along its own central axis to exchange the positions of the two nasal tubes 4 and the first mounting part 11 and the second mounting part 12, and change the nostril to be measured.

[0029] By providing two detachable nasal tubes 4, the use angle of the nasal tubes 4 can be adjusted according to the actual situation of the user, thereby improving the comfort of use; when changing the nostril to be detected, it is only necessary to rotate the adapter 1 to exchange the positions of the two nasal tubes 4, without touching the nasal tubes 4 with hands, which is more convenient and hygienic.

[0030] like Figure 3 and Figure 4 As shown, preferably, a partition 13 is provided inside the adapter, and the partition 13 divides the interior of the adapter 1 into a first chamber 14 and a second chamber 15 , the first mounting portion 11 is connected to the first chamber 14 , and the second mounting portion 12 is connected to the second chamber 15 .

[0031] Specifically, the partition 13 separates the space inside the adapter 1 that is connected to the first mounting part 11 and the second mounting part 12, forming a first chamber 14 and a second chamber 15; the first mounting part 11 is connected to the pressure difference detection mechanism 2 through the first chamber 14, and the second mounting part 12 is connected to the pressure difference detection mechanism 2 and the flow rate detection mechanism 3 through the second chamber.

[0032] Furthermore, two first pressure ports 16 are provided on the side of the adapter 1, and the first chamber 14 and the second chamber 15 are respectively connected to the pressure difference detection mechanism 2 through the two first pressure ports 16; a connection port is provided at the other end of the adapter 1, and the second chamber 15 is connected to the flow rate detection mechanism 3 through the connection port.

[0033] Specifically, two first pressure taking ports 16 are provided on the side of the adapter 1 near the first mounting portion 11, and the two first pressure taking ports 16 are respectively connected to the first chamber 14 and the second chamber 15, and the differential pressure detecting mechanism 2 is respectively connected to the first pressure taking ports 16 for taking pressure; a connecting port is provided at the opposite end of the mounting portion on the adapter 1, and the connecting port connects the second mounting portion 12 and the flow velocity detecting mechanism 3 and the length direction is in the same straight line, so as to avoid the gas flow rate being affected by bending during airflow flow, and ensure that the airflow velocity in the flow velocity detecting mechanism 3 is the same as the airflow velocity in the nasal cavity. Since the first differential pressure detecting mechanism 2 is only used for taking pressure and there is no airflow flow, the first pressure taking port 16 is arranged on the side of the adapter 1, and the connecting port is arranged at the end of the adapter 1, which is a preferred method to ensure the accuracy of the flow velocity detection and differential pressure detection values.

[0034] like Figure 1-6 As shown, preferably, the pressure difference detection mechanism 2 includes two first pressure-taking tubes 21 , one end of the first pressure-taking tube 21 is connected to the adapter 1 , and the other end of the first pressure-taking tube 21 is respectively provided with a first pressure sensor 22 .

[0035] Specifically, the first pressure-taking tubes 21 are two silicone rubber tubes, which are not easily damaged during use; a first pressure sensor 22 is provided at the end of the two first pressure-taking tubes 21 to measure the gas pressure value at the connecting point of the opposite ends of the first pressure-taking tubes 21, that is, the pressure value at the front and rear nasal cavities, and the pressure difference value is calculated through the two measured pressure values.

[0036] Furthermore, the pressure difference detection mechanism 2 also includes a housing 23 , the first pressure sensor 22 is disposed inside the housing 23 , and the housing 23 is connected to the flow rate detection mechanism 3 .

[0037] Specifically, the pressure difference detection mechanism 2 includes a first pressure sensor 22, which is arranged inside the shell 23, and can effectively protect the electronic components from damage and increase the service life; the pressure difference detection mechanism 2 is fixedly connected to the flow rate detection mechanism 3 through the shell 23, and the shell 23 can be used as a handle for the user to hold, which is easy to use.

[0038] Preferably, the flow velocity detection mechanism 3 includes a first connecting tube 31, a detection device 32 and a second connecting tube 33 arranged in sequence along the air flow direction; one end of the first connecting tube 31 is connected to the adapter 1, and the other end is connected to one end of the second connecting tube 33, the detection device 32 is arranged at the connection between the first connecting tube 31 and the second connecting tube 33, and the other end of the second connecting tube 33 is connected to the outside.

[0039] Specifically, the first connecting tube 31 and the second connecting tube 33 are connected to form an air flow channel for gas circulation. The front end of the first connecting tube 31 is connected to the adapter 1, and the end of the second connecting tube 33 is connected to the outside world. An installation groove is provided at the connection between the first connecting tube 31 and the second connecting tube 33 for installing the detection device 32.

[0040] Furthermore, a second pressure taking port 34 is provided on the side of the first connecting tube 31 and the second connecting tube 33; the detection device 32 includes a screen 35 arranged along the width direction of the first connecting tube 31, and two second pressure taking tubes (located inside the shell 23, not marked in the figure); one end of the second pressure taking tube is connected to the second pressure taking port 34, and the other end is provided with a second pressure sensor 36, which is used to measure the pressure value and calculate the gas flow rate flowing through the screen 35.

[0041] Specifically, a second pressure taking port 34 is provided on the side of the first connecting tube 31 and the second connecting tube 33, and the second pressure taking port 34 is close to the connection between the first connecting tube 31 and the second connecting tube 33 to ensure the accuracy of the value; the screen 35 is a circular metal plate with a plurality of through holes on the surface, and the thickness of the screen 35 is 2.4 mm. The airflow generated by breathing passes through the screen 35. Since the airflow resistance of the screen 35 is a fixed value, the gas pressure values ​​on both sides of the screen 35 are measured by the second pressure taking tube and the second pressure sensor 36 provided on both sides of the screen 35. The airflow velocity passing through the screen 35 can be calculated from the pressure values ​​on both sides and the resistance of the screen 35.

[0042] In addition, a soft rubber seal 37 is provided at the second pressure taking port 34 to enhance the sealing of the connection between the second pressure taking port 34 and the second pressure taking tube to prevent air leakage; a sealing sleeve 38 is also provided at the front end of the first connecting tube 31 to enhance the sealing of the connection between the first connecting tube 31 and the front end mechanism to ensure the accuracy of the measurement of the flow rate detection mechanism 3.

[0043] Furthermore, a heating device 5 for heating the screen 35 is also included.

[0044] Specifically, since the breath gas carries water vapor, the water condensed on the screen 35 will affect the resistance value of the screen 35, resulting in inaccurate measurement results. Therefore, a heating device 5 that can heat the screen 35 is provided to prevent the water vapor flowing through the screen 35 from condensing, thereby ensuring the accuracy of the test results; the heating device 5 can be provided on the periphery of the screen 35.

[0045] Furthermore, a PCB board 6 is provided inside the housing 23 , and the pressure difference detection mechanism 2 and the flow rate detection mechanism 3 are electrically connected to the PCB board 6 .

[0046] Specifically, the PCB board 6 is provided with a voice file storage module, a voice playback module, a parameter storage module, a temperature detection module and a USB communication module; the voice playback module is used to play the language data stored in the voice file storage module according to the usage; the parameter storage module is used to store calibration parameters, equipment numbers, production dates and other parameters for users to call and view; the USB communication module is used to connect to a host equipped with a display to display the detected data in real time; the heating module of the heating device 5 can be arranged on the PCB board 6, and the temperature detection module can measure the temperature of the heating device 5 to adjust the temperature of the heating device 5 in real time.

[0047] In addition, the first pressure taking tube 21 extends to the pressure difference detection mechanism 2 on the PCB board 6 inside the shell 23 (the first pressure taking tube 21 is not marked in the partial figure inside the shell 23), and a metal pagoda connector is provided on the shell 23 for connecting with the first pressure taking tube 21 to ensure good sealing of the connection.

[0048] In addition, since the pressure difference detection mechanism 2 and the flow rate detection mechanism 3 both include pressure sensors, preferably, the first pressure sensor 22 and the second pressure sensor 36 are arranged in the same PCB module for easy connection and use; specifically, the first pressure sensor 22 is arranged on the lower surface of the PCB board of the PCB module, and the second pressure sensor 36 is arranged on the upper surface of the PCB board of the PCB module.

[0049] Preferably, a filter 7 is provided between the adapter 1 and the flow rate detection mechanism 3 .

[0050] Specifically, it can be decided whether to install the filter 7 according to actual usage to prevent foreign matter from falling into the flow rate detection mechanism 3 through the adapter 1 and affecting the detection result. When cleaning, it is only necessary to remove the filter 7 for cleaning, and there is no need to clean the inside of the device. The operation is convenient and quick.

[0051] The working process of the utility model is as follows: firstly, a suitable nasal tube 4 is selected according to the actual situation of the user, and the nasal tube 4 is installed on the adapter 1; according to the nostril to be detected, the adapter 1 is rotated to rotate the nasal tube 4 connected to the second mounting part 12 to the direction of the nostril to be detected; the user holds the shell 23 and selects a suitable angle to insert the nasal tube 4 into the nasal cavity.

[0052] The user breathes calmly, and the nostrils on both sides are connected to the first pressure sensor 22 through the first pressure-taking tube 21, and the pressure difference detection mechanism 2 measures the pressure difference between the front and rear nasal cavities; the nostrils to be detected discharge gas, and the gas flows through the screen 35 through the first connecting tube 31, and the flow rate detection mechanism 3 measures the gas flow rate flowing through the screen 35, which is the gas flow rate in the nasal cavity. The pressure difference between the front and rear nasal cavities is divided by the gas flow rate in the nasal cavity to obtain the value of the nasal resistance. The measured value is transmitted in real time to a host with a display via a USB data cable for display.

[0053] The specific calculation process is as follows: the pressure difference between the front and back nasal cavities is ΔP, the gas flow rate through the nasal cavity is V, and the nasal resistance R = ΔP / V; the vertex resistance is obtained by dividing the maximum pressure difference during inhalation or exhalation by the maximum flow during inhalation or exhalation, that is, the vertex resistance VR = ΔP max / V max ; Effective resistance R eff =ΔP eff / V eff , R eff is the effective value of resistance, ΔP eff is the effective value of the voltage difference, V eff is the effective value of flow velocity; effective value:

[0054] The functions of each module on the PCB board 6 can be used through the components such as the speaker on the housing 23, so that the user can understand the relevant information. When the room temperature is low during detection, the heating device 5 can be started to keep the screen 35 at a high temperature to prevent the water vapor carried by the gas flowing into the screen 35 from condensing on the screen 35 and affecting the detection accuracy.

[0055] In summary, the embodiment of the utility model provides a nasal respiratory function detection device, which can detect the respiratory function parameters of two nostrils respectively through two detachable nasal tubes 4, and has high comfort of use; when disassembling, there is no need to remove the pressure taking tube for pressure taking, thereby avoiding damage caused by repeated disassembly and assembly of the pressure taking tube, which makes the detection result inaccurate and can improve the service life of the device; when replacing the detection nostril, only the adapter 1 needs to be rotated, and the hand does not need to touch the nasal tube 4, which improves the cleanliness of use; the structure and use method are simple, and it is easy to disassemble and clean; a heating device 5 is provided, and water vapor will not condense and affect the detection result, making the detection result more accurate.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A nasal respiratory function detection device, characterized in that: It includes an adapter, a pressure difference detection mechanism and a flow rate detection mechanism; one end of the adapter is provided with a first mounting part and a second mounting part, and the first mounting part and the second mounting part are respectively provided with nasal tubes detachably mounted; the pressure difference detection mechanism is respectively connected with the first mounting part and the second mounting part, and the flow rate detection mechanism is connected with the second mounting part; the adapter is rotatably connected to one end of the flow rate detection mechanism, and the flow rate detection mechanism is connected with the outside; the pressure difference detection mechanism is connected with the flow rate detection mechanism.

2. The nasal respiratory function detection device according to claim 1, characterized in that: A partition is provided inside the adapter, and the partition divides the inside of the adapter into a first chamber and a second chamber. The first mounting portion is communicated with the first chamber, and the second mounting portion is communicated with the second chamber.

3. The nasal respiratory function detection device according to claim 2, characterized in that: Two first pressure ports are provided on the side of the adapter, and the first chamber and the second chamber are connected to the pressure difference detection mechanism through the two first pressure ports respectively; a connection port is provided at the other end of the adapter, and the second chamber is connected to the flow rate detection mechanism through the connection port.

4. The nasal respiratory function detection device according to claim 1, characterized in that: The pressure difference detection mechanism comprises two first pressure-taking tubes, one end of each of the first pressure-taking tubes is connected to the adapter, and the other end of each of the first pressure-taking tubes is provided with a first pressure sensor.

5. The nasal respiratory function detection device according to claim 4, characterized in that: The pressure difference detection mechanism further includes a shell, the first pressure sensor is arranged inside the shell, and the shell is connected to the flow rate detection mechanism.

6. The nasal respiratory function detection device according to claim 5, characterized in that: A PCB board is arranged inside the shell, and the pressure difference detection mechanism and the flow rate detection mechanism are electrically connected to the PCB board.

7. The nasal respiratory function detection device according to claim 1, characterized in that: The flow velocity detection mechanism includes a first connecting tube, a detection device, and a second connecting tube arranged in sequence along the air flow direction; one end of the first connecting tube is connected to the adapter, and the other end is connected to one end of the second connecting tube, the detection device is arranged at the connection between the first connecting tube and the second connecting tube, and the other end of the second connecting tube is connected to the outside.

8. The nasal respiratory function detection device according to claim 7, characterized in that: The sides of the first connecting tube and the second connecting tube are both provided with a second pressure taking port; the detection device includes a screen arranged along the width direction of the first connecting tube, and two second pressure taking tubes; one end of the second pressure taking tube is respectively connected to the second pressure taking port, and the other end is provided with a second pressure sensor.

9. The nasal respiratory function detection device according to claim 8, characterized in that: Also included is a heating device for heating the screen.

10. The nasal respiratory function detection device according to claim 1, characterized in that: A filter is provided between the adapter and the flow rate detection mechanism.

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