Patient inspiration flow rapid detection device

Abstract

The invention discloses a rapid patient inspiration flow detection device which comprises a shell and an air outlet pipe, and a testing mechanism is further arranged in the shell. The testing mechanism comprises an air inlet channel, the air inlet channel comprises an end air inlet channel, a front section flow sensor is arranged on the surface of one side in the end air inlet channel, one end of the end air inlet channel is connected with a middle air inlet channel, and a middle section flow sensor is arranged on the surface of one side in the middle air inlet channel. One end of the middle air inlet channel is connected with a tail air inlet channel, and a tail section flow sensor is arranged on one side in the tail air inlet channel; according to calculation of the multi-section inspiration flow, the inspiration flow of a patient is accurately detected, the curative effect of inspiration treatment of the patient is improved, quick connection and disassembly can be achieved, cross infection is prevented, the structure is simple, operation is convenient, and the application range is wide. Meanwhile, opening and closing of the air inlet channel can be automatically controlled, and the cleanliness of the air inlet channel is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for quickly detecting a patient's inspiratory flow rate. Background Art

[0002] Chronic obstructive pulmonary disease (COPD) is a common preventable and treatable disease characterized by persistent airflow limitation. The progressive development of airflow limitation is related to the enhanced chronic inflammatory response of the airways and lungs to toxic particles or gases. In the treatment of COPD, inhaled drug therapy is required. The selection of an individualized inhalation device based on the patient's ability and the correct use of the inhalation device are essential to optimize the benefit-risk ratio of inhalation therapy. Data show that drug particles >5 microns (um) are most likely to deposit in the oropharynx. For drugs delivered to the lower respiratory tract and lungs, the particle size (mass median aerodynamic diameter) can be fine particles (2-5μm) or ultrafine particles (<2um), which affects the total respirable fraction (particles <5μm) and the amount and location of drug deposition (ultrafine particles are more peripherally deposited). Inspiratory flow, flow acceleration, and inspiratory volume are important factors for patients to successfully inhale drug particles from a handheld device into the lower respiratory tract.

[0003] MDIs and SMIs require slow, deep inspiration, whereas DPIs require a forced inspiration. Each DPI has its own internal resistance, and patients must create turbulence within the device during inhalation to break the powder into fine particles. Prescribing physicians should visually check whether the patient is able to forcefully inhale through the device and, if uncertain, objectively check inspiratory flow. Inadequate inspiratory flow in patients receiving DPI maintenance therapy is associated with higher COPD-related healthcare resource utilization and costs.

[0004] For example, an inspiratory peak flow meter for simulating inhaler resistance disclosed in the invention with the authorization announcement number CN111419235B includes a tank body, a rotating cylinder, a resistance adjusting member, a pressure sensor and a control unit. A rotating cylinder capable of rotating around the axis of the tank body is installed at the upper end of the tank body, the resistance adjusting member includes an air hole plate and a rotating plate that are in contact with each other and rotate relatively, the air hole plate is fixed on the tank body and has a ventilation area including a plurality of vents; the rotating plate is fixed at one end of the rotating cylinder and extends along the radial direction of the rotating cylinder. As the rotating cylinder rotates, the rotating plate covers different numbers of vents to adjust the resistance of the airflow, which is equal to the internal resistance of the simulated inhaler. The control unit calculates the peak inspiratory flow rate based on the pressure difference measured by the pressure sensor and the resistance of the airflow. However, the above technology has the following shortcomings: it can only perform a single detection of the patient's peak inspiratory flow rate, and cannot continuously detect the patient's multi-segment inspiratory flow rate, which greatly reduces the detection accuracy of the patient's inspiratory flow rate and is not convenient for the subsequent selection of inhalation drugs and inhalation devices with accurate selection of corresponding particles. At the same time, the mouthpiece cannot be quickly replaced, which is easy to cause cross infection when used, and it cannot be automatically opened and closed. When the patient exhales, the exhaled airflow enters its interior, which is easy to cause contamination. For this reason, we propose a patient inspiratory flow rapid detection device. Summary of the invention

[0005] The purpose of the present invention is to provide a device for rapid detection of patient inspiratory flow, so as to solve the problem that the prior art proposed in the above background technology can only perform a single detection of the patient's inspiratory peak flow, and cannot perform continuous detection of the patient's multi-segment inspiratory flow, which greatly reduces the detection accuracy of the patient's inspiratory flow, and is not convenient for the subsequent selection of inhalation drugs and inhalation devices with accurate selection of corresponding particles. At the same time, its mouthpiece cannot be quickly replaced, which is easy to cause cross infection when used, and it cannot be automatically opened and closed. When the patient exhales, the exhaled air flow enters its interior, which is easy to cause contamination.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a device for quickly detecting the inspiratory flow of a patient, comprising a housing, an air inlet pipe arranged on one side of the housing, and an air outlet pipe arranged on the other side of the housing, wherein a testing mechanism for performing multi-stage detection of the inspiratory flow of the patient is also arranged in the housing;

[0007] The test mechanism comprises an air inlet passage, the air inlet passage is arranged in the shell, the air inlet passage comprises an end air inlet passage, the end air inlet passage is connected to the air inlet pipe, a front section flow sensor is arranged on one side surface of the end air inlet passage, one end of the end air inlet passage is connected to the middle air inlet passage, a middle section flow sensor is arranged on one side surface of the middle air inlet passage, one end of the middle air inlet passage is connected to the tail air inlet passage, the other end of the tail air inlet passage is connected to the air outlet pipe, and a tail section flow sensor is arranged on one side of the tail air inlet passage;

[0008] Among them, a detachable disposable suction nozzle structure is also arranged at one end of the air outlet pipe, and a blocking structure for automatically opening and closing the air inlet passage is also arranged in the tail air inlet passage.

[0009] Preferably, the input ends of the front-end flow sensor, the middle-end flow sensor and the tail-end flow sensor are all connected to the input end of the internal processor, the internal processor is arranged on one side of the outer shell, and the output end of the internal processor is connected to the display panel, and the display panel is arranged on the surface of one side of the outer shell, which can perform multi-segment detection of the patient's inspiratory flow and display it through the display panel.

[0010] Preferably, the disposable suction nozzle structure includes a hard joint, which is arranged on one side surface of the suction nozzle, and one end of the hard joint is connected to the positioning groove through a clamping assembly. The positioning grooves are symmetrically arranged on the two side surfaces inside the outlet pipe, and the hard joint can be clamped and fixed to the outlet pipe, which is convenient for the quick installation of the suction nozzle.

[0011] Preferably, the clamping assembly includes a positioning wedge, which is symmetrically arranged on both sides of the hard joint, and the positioning wedge is clamped in the positioning groove. A groove is arranged on one side surface of the positioning groove, and a fixed wedge is movably arranged in the groove. A first spring is also arranged on one side of the groove, and one end of the first spring is connected to the fixed wedge. The positioning wedge can be fixed in the positioning groove by clamping the fixed wedge.

[0012] Preferably, a guide groove is provided on one side surface of the positioning groove, and a second spring is provided on one side surface of the guide groove, and one end of the second spring is connected to a transverse push rod. Through the setting of the transverse push rod, the positioning wedge block can be locked and fixed, thereby improving the stability of the suction nozzle during installation.

[0013] Preferably, a cross bar is provided on one side surface of the positioning wedge block, and an export wedge block is movably provided on the cross bar, and the inclined surface of the export wedge block is in the opposite direction to the inclined surface of the positioning wedge block. Through the setting of the export wedge block, the positioning wedge block can be easily separated from the fixed wedge block, and the disposable suction nozzle structure can be disassembled, so as to facilitate the replacement of the disposable suction nozzle structure.

[0014] Preferably, a limit block is provided at one end of the cross bar, and one end of the limit block is connected to the hard joint, thereby improving the stability of the hard joint when it is clamped.

[0015] Preferably, the sealing structure includes a first sealing plate and a second sealing plate, the first sealing plate is movably arranged in the first receiving groove, the second sealing plate is movably arranged in the second receiving groove, the first receiving groove and the second receiving groove are symmetrically arranged on both side surfaces of the rear air intake passage, a first return spring is arranged on one side surface of the first receiving groove, one end of the first return spring is connected to the first sealing plate, a second return spring is arranged on one side surface of the second receiving groove, one end of the second return spring is connected to the second sealing plate, and the first return spring and the second return spring are arranged on one side surface of the second receiving groove, and one end of the second return spring is connected to the second sealing plate, and the first sealing plate and the second sealing plate can be automatically stored by the setting of the first return spring and the second return spring.

[0016] Preferably, a first strong magnetic electromagnet is embedded on one side surface of the first sealing plate, and a second strong magnetic electromagnet is embedded on one side surface of the second sealing plate. Through the adsorption connection between the first strong magnetic electromagnet and the second strong magnetic electromagnet, the first sealing plate and the second sealing plate can be adsorbed and fixed, and the air intake duct can be sealed.

[0017] Preferably, the first strong magnetic electromagnet and the second strong magnetic electromagnet are both connected to an internal processor, and the internal processor is also connected to an air pressure sensor. The air pressure sensor is embedded in the inner wall of the air outlet pipe and can automatically control the opening and closing of the first strong magnetic electromagnet and the second strong magnetic electromagnet according to the patient's inhalation or completion of inhalation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present application can detect multiple segments of inhalation flow in the airway when the patient inhales, and accurately detect the patient's inhalation flow based on the calculation of the multiple segments of inhalation flow. The detected inhalation flow can be used to select the inhalation treatment drugs and related inhalation devices for the patient, thereby improving the efficacy of the patient's inhalation treatment.

[0020] (2) The present application provides a disposable nozzle structure that can be quickly connected to and disassembled from the air outlet pipe. After use, it is easy to replace the nozzle to prevent cross infection.

[0021] (3) The present application can automatically control the opening and closing of the airway, thereby preventing the patient from accidentally exhaling and causing the exhaled airflow to contaminate the airway. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of a half-section structure of the present invention;

[0024] Figure 3 It is a schematic diagram of a half-section structure of the air intake duct in the present invention;

[0025] Figure 4 A schematic diagram of a half-section structure of a disposable nozzle structure of the present invention;

[0026] Figure 5 for Figure 4 A schematic diagram of the partial enlarged structure of the middle B part;

[0027] Figure 6 It is a structural schematic diagram of the disposable nozzle structure of the present invention;

[0028] Figure 7 for Figure 2 A partial enlarged structural diagram of the middle A part;

[0029] In the figure: 1. Shell; 2. Exhaust pipe; 3. Disposable nozzle structure; 4. Inlet pipe; 5. Display panel; 6. Built-in power supply; 7. Internal processor; 11. Front flow sensor; 12. Middle flow sensor; 13. Inlet duct; 14. Tail flow sensor; 15. Ultraviolet disinfection lamp group; 101. First storage slot; 102. First return spring; 103. First sealing plate; 104. First strong magnetic electromagnet; 105. Second sealing plate; 106. Second return spring; 107. Second storage Slot; 108, second strong magnetic electromagnet; 131, end air intake channel; 132, middle air intake channel; 133, tail air intake channel; 301, suction nozzle; 302, hard joint; 303, positioning slot; 304, air pressure sensor; 305, positioning wedge; 306, second spring; 307, guide slot; 308, transverse push rod; 309, groove; 310, first spring; 311, fixed wedge; 312, lead-out wedge; 313, cross bar; 314, limit block; 315, tooth slot. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 3 , the present invention provides a technical solution: a patient inspiratory flow rapid detection device, comprising a housing 1, an air inlet pipe 4 arranged on one side of the housing 1, and an air outlet pipe 2 arranged on the other side of the housing 1, and a testing mechanism for performing multi-stage detection of the patient's inspiratory flow is also arranged in the housing 1;

[0032] The test mechanism includes an air intake duct 13, which is arranged in the outer shell 1. The air intake duct 13 includes an end air intake channel 131, which is connected to the air intake pipe 4. A front section flow sensor 11 is arranged on one side surface of the end air intake channel 131, one end of the end air intake channel 131 is connected to the middle air intake channel 132, a middle section flow sensor 12 is arranged on one side surface of the middle air intake channel 132, one end of the middle air intake channel 132 is connected to the tail air intake channel 133, the other end of the tail air intake channel 133 is connected to the outlet pipe 2, and a tail section flow sensor 14 is arranged on one side of the tail air intake channel 133.

[0033] The input ends of the front-end flow sensor, the middle-end flow sensor 12 and the tail-end flow sensor 14 are all connected to the input end of the internal processor 7. The internal processor 7 is arranged on one side of the outer shell 1, and the output end of the internal processor 7 is connected to the display panel 5. The display panel 5 is arranged on the surface of one side of the outer shell 1, and can perform multi-stage detection of the patient's inhalation flow and display it through the display panel 5.

[0034] When the device is in use, the disposable nozzle structure 3 is connected to the air outlet pipe 2, and then the patient takes a deep breath through the disposable nozzle structure 3, and the airflow is delivered to the end air inlet channel 131 through the air inlet pipe 4, and the front process sensor performs primary detection of the inhalation process. When the airflow enters the middle air inlet channel 132 through the end air inlet channel 131, the middle flow sensor 12 detects the inhalation flow in the middle air inlet channel 132, and when the airflow enters the rear air inlet channel 133, the rear flow sensor 14 detects the inhalation flow in the rear air inlet channel 133. The front process sensor, the middle flow sensor 12 and the rear flow sensor 14 deliver the detected inhalation flow information to the internal processor 7, and the internal processor 7 calculates the three groups of inhalation flow sensors and obtains accurate inhalation flow, and delivers the inhalation flow to the display panel 5 for display, and selects the medicine and inhalation device suitable for the patient's inhalation treatment according to the value of the inhalation flow.

[0035] The calculation formula is as follows:

[0036] Among them, υ is the final inspiratory flow value, υ 前 is the suction flow value in the end air intake channel, υ 中 is the suction flow value in the middle intake channel, υ 尾 is the intake flow value in the tail air intake channel.

[0037] Furthermore, an ultraviolet disinfection lamp group 15 is embedded on one side surface of the middle air intake passage 132, and the ultraviolet disinfection lamp group 15 is connected to the control switch on the display panel 5. Through the operation of the ultraviolet disinfection lamp group 15, the air intake passage 13 can be disinfected, thereby ensuring the cleanliness of the air intake passage 13.

[0038] As a specific embodiment of this application, please refer to Figure 4-Figure 6 The disposable suction nozzle structure 3 is also provided at one end of the air outlet pipe 2. The disposable suction nozzle structure 3 includes a hard joint 302, which is arranged on the surface of one side of the suction nozzle 301. One end of the hard joint 302 is connected to the positioning groove 303 through a clamping component. The positioning grooves 303 are symmetrically arranged on the two side surfaces of the air outlet pipe 2, and the hard joint 302 can be clamped and fixed to the air outlet pipe 2, which is convenient for the rapid installation of the suction nozzle 301. The clamping component includes a positioning wedge block 305, which is symmetrically arranged on both sides of the hard joint 302. The positioning wedge block 305 is clamped in the positioning groove 303. A groove 309 is arranged on one side surface of the positioning groove 303. A fixed wedge block 311 is movably arranged in the groove 309. A first spring 310 is also arranged on one side of the groove 309. One end of the first spring 310 is connected to the fixed wedge block 311. The positioning wedge block 305 can be fixed in the positioning groove 303 through the clamping of the fixed wedge block 311.

[0039] When installing the disposable suction nozzle structure 3, first insert the positioning wedge 305 on the hard joint 302 into the positioning groove 303, push the hard joint 302, and the hard joint 302 drives the positioning wedge 305 to move in the positioning groove 303. When the positioning wedge 305 is fitted with the fixed wedge 311, the positioning wedge 305 drives the fixed wedge 311 to move in the groove 309, and the fixed wedge 311 compresses the first spring 310. When the positioning wedge 305 is separated from the fixed wedge 311, the first spring 310 drives the fixed wedge 311 to reset and move, and the fixed wedge 311 clamps the positioning wedge 305 in the positioning groove 303 to complete the installation of the suction nozzle 301. Then the protective cover can be inhaled through the suction nozzle 301, and the overall installation operation is convenient.

[0040] Furthermore, a guide groove 307 is set on one side surface of the positioning groove 303, and a second spring 306 is set on one side surface of the guide groove 307. One end of the second spring 306 is connected to a transverse push rod 308. Through the setting of the transverse push rod 308, the positioning wedge block 305 can be locked and fixed, thereby improving the stability of the suction nozzle 301 during installation.

[0041] When the positioning wedge block 305 is fitted with the transverse push rod 308, as the positioning wedge block 305 moves, the transverse push rod 308 is driven to move in the guide groove 307, and the transverse push rod 308 moves to compress the second spring 306. When the fixed wedge block 311 clamps the positioning wedge block 305, the second spring 306, under the action of elastic force, makes the transverse push rod 308 fit with the positioning wedge block 305. Through the joint action of the fixed wedge block 311, the positioning wedge block 305 can be locked and fixed, thereby improving the stability of the positioning wedge block 305 during installation.

[0042] For a specific embodiment of this application, please refer to Figure 4-Figure 6 A cross bar 313 is set on one side surface of the positioning wedge block 305, and an export wedge block 312 is movably set on the cross bar 313. The inclined surface of the export wedge block 312 is opposite to the inclined surface of the positioning wedge block 305. Through the setting of the export wedge block 312, the positioning wedge block 305 can be easily separated from the fixed wedge block 311, and the disposable suction nozzle structure 3 can be disassembled, which is convenient for replacing the disposable suction nozzle structure 3. A limit block 314 is set at one end of the cross bar 313, and one end of the limit block 314 is connected to the hard joint 302, which improves the stability of the hard joint 302 when it is clamped.

[0043] When the patient has finished using the device, the hard joint 302 is pushed, and the hard joint 302 drives the positioning wedge 305 to move in the positioning groove 303. At the same time, the hard joint 302 drives the output wedge 312 to move. When the output wedge 312 fits with the fixed wedge 311, the fixed wedge 311 moves in the groove 309. When the fixed wedge 311 moves to the other side of the output wedge 312, the hard joint 302 is pulled backward, and the hard joint 302 drives the positioning wedge 305 to move. At the same time, due to the fixed wedge 311, the output wedge 312 is fitted with the fixed wedge 311, and the fixed wedge 311 moves in the groove 309. 11 blocks the export wedge 312, and the export wedge 312 moves on the cross bar 313. When the export wedge 312 is fitted with the positioning wedge 305, as the hard joint 302 moves, the fixed wedge 311 moves along the inclined surface of the export wedge 312. At the same time, the fixed wedge 311 moves to the top of the positioning wedge 305 through the export wedge 312 and moves out from the top of the positioning wedge 305. Then, the hard joint 302 is moved out of the air outlet pipe 2, and a new disposable nozzle structure 3 is replaced.

[0044] Specifically, toothed slots 315 are provided on both sides of the suction nozzle 301 to facilitate the patient to press it tightly and prevent it from loosening during use.

[0045] As a specific embodiment of this application, please refer to Figure 2 and Figure 7A blocking structure is also provided in the tail air intake passage 133, and the blocking structure includes a first sealing plate 103 and a second sealing plate 105. The first sealing plate 103 is movably provided in the first receiving groove 101, and the second sealing plate 105 is movably provided in the second receiving groove 107. The first receiving groove 101 and the second receiving groove 107 are symmetrically provided on both side surfaces of the tail air intake passage 133. A first return spring 102 is provided on one side surface of the first receiving groove 101, and one end of the first return spring 102 is connected to the first sealing plate 103. A second return spring 106 is provided on one side surface of the second receiving groove 107, and one end of the second return spring 106 is connected to the second sealing plate 105. By providing the first return spring 102 and the second return spring 106, the first sealing plate 103 can be automatically closed. The plate 103 and the second sealing plate 105 are stored, the first strong magnetic electromagnet 104 is embedded on the surface of one side of the first sealing plate 103, and the second strong magnetic electromagnet 108 is embedded on the surface of one side of the second sealing plate 105. Through the adsorption connection of the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108, the first sealing plate 103 and the second sealing plate 105 can be adsorbed and fixed, and the air inlet 13 can be sealed. The first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108 are both connected to the internal processor 7, and the internal processor 7 is also connected to the air pressure sensor 304. The air pressure sensor 304 is embedded in the inner wall of the air outlet pipe 2, and can automatically control the opening and closing of the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108 according to when the patient inhales or completes inhalation.

[0046] When the patient inhales through the inhalation nozzle 301, the air pressure sensor 304 detects that the air pressure in the exhaust pipe 2 decreases. At this time, the internal controller cuts off the circuit of the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108. The magnetism of the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108 disappears. The first return spring 102 and the second return spring 106 automatically store the first sealing plate 103 and the second sealing plate 105 into the first storage groove 101 and the second storage groove 107 through elastic force, thereby opening the air inlet 13 to facilitate the circulation of airflow. When the air pressure sensor 304 detects that the pressure in the exhaust pipe 2 returns to The initial value indicates that the patient has completed inhalation, and the internal processor 7 connects the circuits of the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108. The first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108 are attracted by magnetism, and the first sealing plate 103 stretches the first return spring 102, and the second sealing plate 105 stretches the second return spring 106. The first sealing plate 103 and the second sealing plate 105 are spliced ​​together by the first strong magnetic electromagnet 104 and the second strong magnetic electromagnet 108, and the first sealing plate 103 and the second sealing plate 105 seal the airway 13 to prevent the patient's exhalation from polluting the airway 13.

[0047] Specifically, in the present application, a built-in power supply 6 is also provided in the shell 1, and the built-in power supply 6 provides operating power for the front-end process sensor, the middle-end flow sensor 12, the tail-end flow sensor 14, the first strong magnetic electromagnet 104, the second strong magnetic electromagnet 108 and the ultraviolet disinfection lamp group 15.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A patient inhalation flow rapid detection device, comprising a housing (1), an air inlet pipe (4) arranged on one side of the housing (1), and an air outlet pipe (2) arranged on the other side of the housing (1), characterized in that: A testing mechanism for performing multi-stage detection of the patient's inspiratory flow rate is also provided in the housing (1); The test mechanism comprises an air inlet duct (13), wherein the air inlet duct (13) is arranged in the housing (1), the air inlet duct (13) comprises an end air inlet channel (131), the end air inlet channel (131) is connected to the air inlet pipe (4), a front section flow sensor (11) is arranged on one side surface of the end air inlet channel (131), one end of the end air inlet channel (131) is connected to the middle air inlet channel (132), a middle section flow sensor (12) is arranged on one side surface of the middle air inlet channel (132), one end of the middle air inlet channel (132) is connected to the tail air inlet channel (133), the other end of the tail air inlet channel (133) is connected to the air outlet pipe (2), and a tail section flow sensor (14) is arranged on one side of the tail air inlet channel (133); A detachable disposable suction nozzle structure (3) is also provided at one end of the air outlet pipe (2), and a blocking structure for automatically opening and closing the air inlet passage (133) is also provided in the tail air inlet passage (133).

2. A patient inspiratory flow rapid detection device according to claim 1, characterized in that: The input ends of the front-end flow sensor, the middle-end flow sensor (12) and the rear-end flow sensor (14) are all connected to the input end of the internal processor (7), the internal processor (7) is arranged on one side of the housing (1), and the output end of the internal processor (7) is connected to the display panel (5), and the display panel (5) is arranged on the surface of one side of the housing (1).

3. A patient inspiratory flow rapid detection device according to claim 1, characterized in that: The disposable suction nozzle structure (3) comprises a hard joint (302), which is arranged on a side surface of the suction nozzle (301), and one end of the hard joint (302) is connected to a positioning groove (303) through a clamping assembly, and the positioning groove (303) is symmetrically arranged on both side surfaces of the outlet pipe (2).

4. A patient inspiratory flow rapid detection device according to claim 3, characterized in that: The clamping assembly comprises a positioning wedge (305), wherein the positioning wedge (305) is symmetrically arranged on both sides of the hard joint (302), and the positioning wedge (305) is clamped in the positioning groove (303). A groove (309) is arranged on one side surface of the positioning groove (303), and a fixed wedge (311) is movably arranged in the groove (309). A first spring (310) is also arranged on one side of the groove (309), and one end of the first spring (310) is connected to the fixed wedge (311).

5. A patient inspiratory flow rapid detection device according to claim 3 or 4, characterized in that: A guide groove (307) is provided on one side surface of the positioning groove (303), a second spring (306) is provided on one side surface of the guide groove (307), and one end of the second spring (306) is connected to a transverse push rod (308).

6. A patient inspiratory flow rapid detection device according to claim 4, characterized in that: A cross bar (313) is arranged on one side surface of the positioning wedge block (305), and a guide wedge block (312) is movably arranged on the cross bar (313), and the inclined surface of the guide wedge block (312) is in the opposite direction to the inclined surface of the positioning wedge block (305).

7. A patient inspiratory flow rapid detection device according to claim 6, characterized in that: A limit block (314) is provided at one end of the cross bar (313), and one end of the limit block (314) is connected to the hard joint (302).

8. A patient inspiratory flow rapid detection device according to claim 1, characterized in that: The blocking structure comprises a first sealing plate (103) and a second sealing plate (105); the first sealing plate (103) is movably arranged in a first receiving groove (101); the second sealing plate (105) is movably arranged in a second receiving groove (107); the first receiving groove (101) and the second receiving groove (107) are symmetrically arranged on two side surfaces inside the tail air intake passage (133); a first return spring (102) is arranged on one side surface inside the first receiving groove (101); one end of the first return spring (102) is connected to the first sealing plate (103); a second return spring (106) is arranged on one side surface inside the second receiving groove (107); one end of the second return spring (106) is connected to the second sealing plate (105).

9. A patient inspiratory flow rapid detection device according to claim 8, characterized in that: A first strong magnetic electromagnet (104) is embedded on one side surface of the first sealing plate (103), and a second strong magnetic electromagnet (108) is embedded on one side surface of the second sealing plate (105).

10. A patient inspiratory flow rapid detection device according to claim 9, characterized in that: The first strong magnetic electromagnet (104) and the second strong magnetic electromagnet (108) are both connected to the internal processor (7), and the internal processor (7) is also connected to the air pressure sensor (304), and the air pressure sensor (304) is embedded in the inner wall of the air outlet pipe (2).

Images