Expiratory flow rate data acquisition assembly and daily respiration monitoring equipment

Abstract

The invention belongs to the technical field of medical monitoring, particularly relates to an expiratory flow rate data acquisition assembly and daily respiration monitoring equipment, and solves the problems that traditional equipment is inaccurate in monitoring, a hose is easily damaged and leaks air, oxygen supply early warning cannot be performed in time and carrying is inconvenient. According to the technical key points, in the expiration flow rate data acquisition assembly, a mask is provided with an elastic bridle, a connecting port, an expiration pipe and an inspiration pipe, and the expiration pipe is provided with a differential pressure sensor; the air suction pipe is connected with the mask through a connector with external threads, and an activated carbon filter layer and an HEPA filter are arranged in the air suction pipe; the daily respiration monitoring equipment comprises a shell for accommodating the mask, a reel for winding the conveying hose, a winding structure and a detection structure for detecting air leakage of the hose; the motor drives the reel and other parts to uniformly wind the hose, and the detection structure comprehensively detects the hose; breathing can be accurately detected, timely oxygen supply early warning is achieved, and carrying is convenient.

Description

Technical Field

[0001] This invention relates to the field of medical monitoring technology, and in particular to an expiratory flow rate data acquisition component and a daily respiratory monitoring device. Background Technology

[0002] Breathing is a fundamental vital sign, and real-time monitoring of respiratory rate and frequency is crucial in the rehabilitation management of patients with chronic obstructive pulmonary disease (COPD) and pneumoconiosis. Even after being discharged from the hospital, these patients still require routine respiratory monitoring. However, auxiliary oxygen supply devices present the following problems in practical use: For these patients, respiratory testing is inconvenient after they leave the hospital; Traditional oxygen tubing is usually directly exposed and suspended. The long tubing is prone to snagging, dragging, and tension. This not only causes micro-cracks or fissures on the surface of the tubing, resulting in oxygen dialysis, but may also cause patients to trip due to the tubing being connected in series. Existing pipeline inspections often rely on manual visual inspection or soapy water application, making it difficult to detect tiny pinholes or aging cracks. Once an oxygen leak occurs, not only is precious oxygen resources wasted, but it can also lead to insufficient pressure when patients urgently need oxygen, endangering their lives. When patients experience difficulty breathing due to a sudden respiratory illness (such as pneumothorax or status epilepticus), they often become confused or lose their ability to move, making it impossible for them to manually open the oxygen supply valve or call for help in time, thus missing the golden window for the best rescue time. Therefore, there is an urgent need for an expiratory flow rate data acquisition component and daily respiratory monitoring equipment that can automatically adjust for damage to the entire instrument, has a self-test function to ensure the airtightness of the catheter, and can actively supply oxygen and alarm when abnormal respiratory data is detected. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of traditional equipment, such as inaccurate monitoring, easily damaged and leaking hoses, inability to provide timely oxygen supply warnings, and inconvenience in carrying out routine breathing monitoring. This invention proposes an expiratory flow rate data acquisition component and a daily breathing monitoring device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An exhalation flow rate data acquisition component includes a mask with an elastic strap at the bottom and an integrally formed connection port at the top for injecting oxygen into the mask through the connection port. An exhalation tube and an inhalation tube are respectively provided on both sides of the mask, and the exhalation tube is fixedly connected to and communicates with the mask. A differential pressure sensor is provided on the exhalation tube, and the probe of the differential pressure sensor is fixedly extended into the exhalation tube. A connector is fixed to one side of the inhalation tube. The outer wall of the connector is provided with external threads. One end of the connector extends into the mask and is threadedly connected to the mask. An activated carbon filter layer and a HEPA filter are provided inside the inhalation tube. The differential pressure sensor is used to monitor the expiratory flow rate by measuring the pressure difference when the airflow passes through the expiratory tube, and the activated carbon filter layer and HEPA filter are used to filter and purify the outside air.

[0005] In one possible design, the connector, exhalation tube, and connection port are all equipped with check valves to allow one-way air intake through the connection port and inhalation tube, and one-way air exhaust through the exhalation tube.

[0006] A daily respiratory monitoring device includes the aforementioned expiratory flow rate data acquisition component, and also includes a housing for storing a face mask. A cover plate is rotatably connected to the top side of the housing, and multiple C-shaped clamps are fixed to the bottom inner wall of the housing. The same oxygen cylinder is clamped in the multiple C-shaped clamps. A roller is rotatably connected inside the housing, and a delivery hose is wound up on the outer wall of the roller, with one end of the delivery hose being inserted into a connection port. It also includes a winding structure for evenly winding the delivery hose onto a reel. The winding structure includes two supports fixed to the inner wall of the bottom of the housing, and the reel is rotatably connected between the two supports. It also includes a detection structure for detecting air leakage in the delivery hose, the detection structure including a detection cylinder and multiple cameras disposed inside the detection cylinder; The delivery hose is used to inject oxygen into the mask, and the winding structure is used to evenly wind up the delivery hose when the reel rotates to avoid entanglement and damage.

[0007] In one possible design, the outlet port of the oxygen cylinder is connected to a solenoid valve via a flange, a tee connector is fixed to the bottom inner wall of the housing via a connecting bracket, one end of the solenoid valve is fixedly connected to one port of the tee connector, a smoke generator is fixed to one side inner wall of the housing, the outlet of the smoke generator is fixedly connected to an exhaust pipe, and one end of the exhaust pipe is fixedly connected to another port of the tee connector, and the last port of the tee connector is rotatably connected to a rotary joint, and the rotary joint is connected to a delivery hose wound on a reel; The smoke generator is used to inject smoke into the delivery hose so that a detection structure can detect leaks.

[0008] In one possible design, the winding structure further includes two crossbeams, each of which is fixedly connected to a corresponding bracket. A reciprocating screw is rotatably connected between the two crossbeams. A nut is threaded onto the outer wall of the reciprocating screw, and a guide sleeve is fixed to the top of the nut. One end of the conveying hose passes through the guide sleeve, and one end of the rotary joint passes through the reel. A sliding groove is provided on one side of the housing, and the detection cylinder is slidably disposed in the sliding groove. A connecting rod is fixed between the nut and the detection cylinder. The motor drives the reel to rotate, and the reel drives the reciprocating screw to rotate via the synchronous pulley and synchronous belt, causing the nut to move along the reciprocating screw, thereby guiding the conveying hose to be evenly wound around the outer wall of the reel through the guide sleeve.

[0009] In one possible design, the detection structure further includes a rotating ring rotatably connected to the inner wall of the detection cylinder. Multiple cameras are fixed to the inner wall of the rotating ring. Both ends of the detection cylinder have holes, and one end of the delivery hose passes through the holes and the rotating ring in sequence. A bevel gear ring is fixed to one side of the rotating ring. A rotating cylinder is rotatably connected to one side of the inner wall of the housing. A rotating shaft is slidably connected inside the rotating cylinder. One end of the rotating shaft extends rotatably into the detection cylinder and is fixed with a bevel gear, which meshes with the bevel gear ring. An annular lighting strip is fixed to the inner wall of the detection cylinder on the side away from the reel. The rotating shaft drives the rotating ring to rotate through the cooperation of the bevel gear and the bevel ring, so that the camera can perform a comprehensive inspection of the outer wall of the delivery hose. The ring-shaped lighting strip is used to provide illumination for the camera.

[0010] In one possible design, the reel, reciprocating screw and rotating drum are connected by a synchronous pulley and a synchronous belt, so that when the reel rotates, it synchronously drives the guide sleeve and the detection drum to reciprocate. The inner walls of the two sides of the sliding groove that are far apart from each other are fixed with the same corrugated sleeve. The detection cylinder is fixed through the corrugated sleeve to seal the sliding groove to prevent dust from entering when the detection cylinder moves.

[0011] In one possible design, O-rings are fixed in both holes, one end of the delivery hose passes through the O-rings, and a rubber plug is inserted into the end of the delivery hose away from the reel. A display panel is provided on one side of the housing, and a control box is fixed to the bottom inner wall of the housing. The control box contains a microcontroller, a battery, a WIFI module, and a GPS positioning module. The microcontroller is electrically connected to the battery, the WIFI module, the GPS positioning module, a camera, a ring lighting strip, a smoke generator, a solenoid valve, the display panel, and a differential pressure sensor. The O-ring is used to protect the delivery hose from frequent bending and damage, and the rubber plug is used to seal the end of the delivery hose and prevent bacteria from entering.

[0012] In one possible design, four fasteners are fixed to the bottom inner wall of the housing. The four fasteners are in pairs, and a single strap runs through the two fasteners in the same pair. Velcro is provided on the outer wall of the strap near both ends. The shell is secured to the user's waist with straps and Velcro, making it easy to carry.

[0013] In one possible design, a fixed sleeve is fixed to the bottom of the housing, a sliding plate is slidably connected inside the fixed sleeve, a spring is fixed between the top of the sliding plate and the top inner wall of the fixed sleeve by a spring seat, and a photoplethysmography sensor is fixed to the bottom of the sliding plate. The photoplethysmography (PPG) sensor is pressed tightly against the user's skin by the elastic force of a spring to detect changes in heart rate. The PPG sensor is electrically connected to a microcontroller, and the display panel is used to display the data detected by the PPG sensor, differential pressure sensor, and camera.

[0014] Beneficial effects: In this invention, the smoke generator is turned on and injects smoke into the delivery hose through the three-way connector and the rotary connector. One end of the delivery hose is sealed with a rubber plug. Then, the ring-shaped lighting belt runs to provide illumination for the camera. When the delivery hose passes through the detection cylinder, the rotating ring drives multiple cameras to rotate and detect the delivery hose inside the detection cylinder to check for air leaks. This completes the inspection of the delivery hose, ensuring its integrity so that the user's breathing flow can be accurately detected later. In this invention, through the cooperation of a differential pressure sensor and a control box, when the differential pressure sensor detects that the user is breathing rapidly, it transmits a signal to the microcontroller in the control box. The microcontroller then activates the solenoid valve, and the oxygen in the oxygen cylinder enters the delivery hose through the three-way connector and the rotary connector to provide oxygen to the user. The microcontroller also transmits a signal to the user's family member's mobile phone via the WIFI module to provide an early warning to the family member and to send an emergency signal to the nearest hospital to facilitate timely emergency treatment of the patient. In this invention, the shell is secured to the user's waist by straps and Velcro, making it convenient for the user to conduct tests when going out. In this invention, the reel, reciprocating screw, and rotating cylinder are connected by a synchronous pulley and a synchronous belt. Therefore, when the reel rotates, it can synchronously drive the guide sleeve and the detection cylinder to move back and forth. This not only allows the conveying hose to be smoothly wound and unwound on the reel, avoiding tangling and damage to the conveying hose, but also enables the detection structure to detect the conveying hose.

[0015] In this invention, for detection, a smoke generator, a ring-shaped lighting strip, and a rotating camera can comprehensively detect whether the delivery hose is leaking, ensuring accurate subsequent breathing flow monitoring. Regarding oxygen supply and early warning, a differential pressure sensor detects rapid breathing, and a microcontroller activates a solenoid valve to supply oxygen. Simultaneously, a signal is sent to family members' mobile phones and nearby hospitals via a Wi-Fi module for timely emergency treatment. For storage and use, the reel, reciprocating screw, and rotating drum are synchronously driven, ensuring smooth winding and unwinding of the delivery hose, avoiding tangling and damage. The device is also portable, allowing for on-the-go breathing monitoring and oxygen supply to meet users' actual needs. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of an expiratory flow rate data acquisition component provided by the present invention; Figure 2 This is a cross-sectional view of the inhalation tube and connector of an expiratory flow rate data acquisition component provided by the present invention. Figure 3 A three-dimensional structural diagram of the daily respiratory monitoring device provided by the present invention; Figure 4 A three-dimensional exploded structural diagram of the oxygen cylinder, three-way connector, and smoke generator of the daily respiratory monitoring device provided by the present invention; Figure 5 This is a three-dimensional structural diagram of the roll, detection cylinder, and corrugated sheath of the daily respiratory monitoring device provided by the present invention; Figure 6 This is a three-dimensional exploded view of the rotating shaft, reciprocating lead screw, and reel of the daily respiratory monitoring device provided by the present invention; Figure 7 This is a three-dimensional exploded view of the reciprocating lead screw, detection cylinder, and guide sleeve of the daily respiratory monitoring device provided by the present invention; Figure 8 This is a three-dimensional cross-sectional view of the detection cylinder of the daily respiratory monitoring device provided by the present invention; Figure 9 This is a three-dimensional exploded structural diagram of the strap and fixing buckle of the daily respiratory monitoring device provided by the present invention; Figure 10 This is a three-dimensional exploded structural diagram of the fixed sleeve and sliding plate of the daily respiratory monitoring device provided by the present invention.

[0017] In the diagram: 1. Face mask; 2. Elastic strap; 3. Connection port; 4. Exhalation tube; 5. Differential pressure sensor; 6. Inhalation tube; 7. Connector; 8. Activated carbon filter layer; 9. HEPA filter; 10. Check valve; 11. Housing; 12. Cover plate; 13. C-clamp; 14. Oxygen cylinder; 15. Solenoid valve; 16. Smoke generator; 17. Exhaust pipe; 18. T-joint; 19. Rotary joint; 20. Bracket; 21. Reel; 22. Delivery hose; 23. Crossbeam; 24. Reciprocating screw 25. Nut; 26. Guide sleeve; 27. Sliding groove; 28. Detection cylinder; 29. ​​Hole; 30. O-ring; 31. Rotating ring; 32. Camera; 33. Bevel gear ring; 34. Shaft; 35. Rotating cylinder; 36. Bevel gear; 37. Annular lighting strip; 38. Rubber plug; 39. Corrugated sleeve; 40. Fixing buckle; 41. Strap; 42. Fixing sleeve; 43. Sliding plate; 44. Spring; 45. Photoplethysmography sensor; 46. Display panel; 47. Connecting rod; 48. Control box. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In one embodiment: Refer to Figure 1 and Figure 2 An expiratory flow rate data acquisition component mainly includes a mask 1, an elastic strap 2, a connection port 3, an expiratory tube 4, a differential pressure sensor 5, an inspiratory tube 6, a connector 7, an activated carbon filter layer 8, a HEPA filter 9, and a check valve 10. The mask 1 is made of medical-grade plastic material, possessing a certain degree of flexibility and strength. It can conform to the user's facial contours, ensuring wearing comfort and a tight seal. The bottom of the mask 1 is equipped with an elastic strap 2, which is made of highly elastic rubber material and can be elastically adjusted according to the size of the user's head, ensuring that the mask 1 is securely worn on the user's face and preventing the mask 1 from falling off during use.

[0020] Reference Figure 1 The top of the mask 1 has a circular connection port 3 integrally formed. It is used to inject oxygen into the mask 1 through the connection port 3. The connection port 3 is equipped with a check valve 10, which is a one-way valve made of silicone. It allows oxygen to enter the mask 1 in one direction and prevents the gas in the mask 1 from flowing back.

[0021] Reference Figure 1The mask 1 has an exhalation tube 4 and an inhalation tube 6 on each side. The exhalation tube 4 is fixedly connected to the mask 1 and is cylindrical. A differential pressure sensor 5 is installed on the exhalation tube 4. The differential pressure sensor 5 uses a high-precision differential pressure measurement chip, and its probe extends fixedly into the exhalation tube 4 to measure the airflow velocity when passing through a narrow channel. The probe of the differential pressure sensor 5 is a slender rod-shaped probe that can penetrate deep into the exhalation tube 4 to accurately measure the airflow pressure difference. A check valve 10 is also installed in the exhalation tube 4. The check valve 10 is also a one-way valve made of silicone material, allowing air to exit the exhalation tube 4 in one direction and preventing backflow of outside air.

[0022] Reference Figure 1 and Figure 2 A connector 7 is fixed to one side of the inhalation tube 6. The outer wall of the connector 7 has external threads, and one end of the connector 7 extends into the mask 1 and is threadedly connected to the mask 1, facilitating the installation and removal of the inhalation tube 6 from the mask 1. A check valve 10 is installed inside the connector 7 to allow one-way air intake through the inhalation tube 6. The inhalation tube 6 contains an activated carbon filter layer 8 and a HEPA filter 9. The activated carbon filter layer 8 is filled with activated carbon particles and has a thickness of 0.5-1 cm, which can adsorb odors and harmful gases in the air. The HEPA filter 9 is made of high-efficiency filter material and can filter out fine particles in the air, such as dust and pollen, with a filtration efficiency of over 99.97%, used to filter and purify the outside air to ensure the quality of the air inhaled by the user.

[0023] Reference Figures 3-10 The daily respiratory monitoring equipment relates to the field of medical monitoring technology. It includes the above-mentioned expiratory flow rate data acquisition component, and also includes a housing 11, a cover plate 12, a C-type clamp 13, an oxygen cylinder 14, a reel 21, a delivery hose 22, a winding structure, a detection structure, a solenoid valve 15, a three-way connector 18, a smoke generator 16, an exhaust pipe 17, a rotary joint 19, a fixing buckle 40, a strap 41, a fixing sleeve 42, a sliding plate 43, a spring 44, and a photoplethysmography sensor 45.

[0024] Reference Figure 3 The housing 11 is used to store the face mask 1. It is rectangular in shape and made of high-strength plastic. It has a certain degree of pressure and impact resistance. A cover plate 12 is rotatably connected to the top side of the housing 11. The cover plate 12 is connected to the housing 11 by a hinge and can rotate around the hinge axis to close the housing 11 and prevent dust and debris from entering the housing 11.

[0025] Reference Figure 3 and Figure 4Multiple C-shaped clamps 13 are fixed to the bottom inner wall of the casing 11. These C-shaped clamps 13 are made of plastic and have a certain degree of elasticity. Their opening width is slightly smaller than the diameter of the oxygen cylinder 14, allowing them to secure the oxygen cylinder 14 through elastic deformation. Multiple C-shaped clamps 13 engage the same oxygen cylinder 14 to provide oxygen to the user. The oxygen cylinder 14 is cylindrical with a capacity of 1-2 liters, sufficient to meet the user's oxygen needs for a certain period.

[0026] Reference Figure 3 and Figure 5 A cylindrical, smooth-surfaced metal reel 21 rotates within the housing 11 to reduce friction with the delivery hose 22. The delivery hose 22, made of medical-grade rubber, is wound around the outer wall of the reel 21. It possesses a flexibility and pressure resistance, with an inner diameter of 0.5-0.8 cm and a length of 2-3 meters. One end of the delivery hose 22 is inserted into the connection port 3 for injecting oxygen into the mask 1.

[0027] Reference Figure 3 and Figure 5 The winding structure is used to evenly wind the delivery hose 22 onto the reel 21, ensuring the delivery hose 22 is properly stored. The winding structure includes two L-shaped supports 20 fixed to the inner wall of the bottom of the housing 11, made of metal, providing stable support. The reel 21 rotates between the two supports 20. The winding structure also includes two crossbeams 23, each fixedly connected to a corresponding support 20, with a reciprocating screw 24 rotatably connected between the two crossbeams 23. The reciprocating screw 24 is cylindrical with helical grooves on its surface and a pitch of 0.5-1 cm. A nut 25 is threaded onto the outer wall of the reciprocating screw 24; the nut 25 is rectangular and has a threaded hole 29 that mates with the reciprocating screw 24. A guide sleeve 26 is fixed to the top of the nut 25. The guide sleeve 26 is cylindrical and its inner diameter is slightly larger than the diameter of the conveying hose 22. One end of the conveying hose 22 passes through the guide sleeve 26, and the guide sleeve 26 cooperates with the nut 25 to make the conveying hose 22 evenly wound around the outer wall of the reel 21 when the reel 21 winds up the conveying hose 22.

[0028] Reference Figures 3-5 and Figure 7One end of the rotary joint 19 is fixedly inserted through the reel 21, and the rotary joint 19 is connected to the delivery hose 22 wound on the reel 21 for delivering oxygen or smoke into the delivery hose 22. A sliding groove 27 is provided on one side of the housing 11, and the detection cylinder 28 is slidably disposed within the sliding groove 27. A connecting rod 47 is fixed between the nut 25 and the detection cylinder 28 to constrain the movement of the nut 25 and prevent it from shifting during movement. The reel 21 is driven to rotate in the reverse direction by a motor, and the reel 21 drives the reciprocating screw 24 to rotate via a synchronous pulley and synchronous belt. Under the guidance of the guide sleeve 26, the delivery hose 22 is evenly wound around the outer wall of the reel 21, preventing the reel 21 from becoming entangled and damaged. The synchronous pulley is round and made of metal, and the synchronous belt is made of rubber, possessing a certain degree of elasticity and strength to ensure transmission stability.

[0029] Reference Figure 8 The detection structure is used to check for leaks in the delivery hose 22 before oxygen is delivered into the mask 1. The detection structure includes a detection cylinder 28 and multiple cameras 32 installed inside the cylinder 28. The detection cylinder 28 is cylindrical and made of transparent plastic to facilitate observation of the delivery hose 22 by the cameras 32. Both ends of the detection cylinder 28 have holes 29, and one end of the delivery hose 22 passes through both holes 29 and a rotating ring 31. O-rings 30, made of rubber and with an inner diameter slightly smaller than the diameter of the delivery hose 22, are fixed inside both holes 29. These O-rings protect the delivery hose 22 from damage caused by frequent bending.

[0030] Reference Figure 3 , Figure 7 and Figure 8The detection structure also includes a rotating ring 31 that rotates on the inner wall of the detection cylinder 28. The rotating ring 31 is annular, made of metal, and has a smooth surface. Multiple cameras 32, which are high-definition miniature cameras, are fixed to the inner wall of the rotating ring 31. There are 3-5 cameras evenly distributed on the inner wall of the rotating ring 31 for detecting the outer wall of the delivery hose 22. A conical toothed ring 33 is fixed to one side of the rotating ring 31. The conical toothed ring 33 is annular and has conical teeth on its surface. A rotating cylinder 35 is rotatably connected to one side of the inner wall of the housing 11. The rotating cylinder 35 is cylindrical and made of metal. A rotating shaft 34 is slidably connected inside the rotating cylinder 35. The rotating shaft 34 is cylindrical and can slide within the rotating cylinder 35 to accommodate the reciprocating movement of the detection cylinder 28. One end of the rotating shaft 34 extends rotatably into the detection cylinder 28 and is fixed with a bevel gear 36, which meshes with a bevel gear ring 33. The rotating shaft 34 drives the rotating ring 31 to rotate through the engagement of the bevel gear ring 33 and the bevel gear 36, thereby enabling the camera 32 to perform a comprehensive inspection of the outer wall of the delivery hose 22. An annular lighting strip 37 is fixed to the inner wall of the detection cylinder 28 on the side away from the reel 21. The annular lighting strip 37 is composed of LED beads and can provide illumination for the camera 32, making it easier for the camera 32 to detect whether there is any air leakage on the delivery hose 22.

[0031] Specifically, the smoke generator 16 is turned on and operates, sending smoke through the three-way connector 18 and the rotary connector 19. One end of the delivery hose 22 is sealed by the rubber plug 38. Then, the annular lighting strip 37 operates to provide illumination for the camera 32. When the delivery hose 22 passes through the detection cylinder 28, the rotating ring 31 drives multiple cameras 32 to rotate, detecting the delivery hose 22 inside the detection cylinder 28 to check for any air leaks. This completes the inspection of the delivery hose 22, ensuring its integrity so that the user's breathing flow can be accurately detected later.

[0032] Smoke composition characteristics: The smoke used for testing is generally generated by a specialized smoke generator. Its main components are safe. The smoke produced by common smoke generators is mostly composed of small droplets formed by the condensation of substances such as glycerin and propylene glycol after being heated and vaporized. These components are chemically stable and do not react chemically with the oxygen supply tube material at room temperature. For example, similar principles and components are used in some stage special effects smoke generators. Long-term practical verification has shown that these smokes will not damage the equipment that comes into contact with them.

[0033] Brief contact: The smoke detection method is a relatively short process. The smoke has a limited time to adhere to the inner wall of the delivery hose 22. In normal detection operations, the entire process from the generation of smoke to the completion of the detection and ventilation to remove the smoke may only take a few minutes to a dozen minutes. This brief contact will not cause sufficient accumulation and erosion on the inner wall of the oxygen delivery hose.

[0034] Regarding the material properties of delivery hoses 22, medical oxygen delivery hoses are typically made of materials such as polyvinyl chloride (PVC) and silicone. These materials possess good chemical stability and corrosion resistance, enabling them to resist the erosion of common chemicals and exhibiting a certain degree of tolerance to components in fumes. Taking silicone oxygen delivery hoses as an example, silicone itself is non-toxic, odorless, and chemically stable, making it widely used in the medical field and offering good resistance to common chemical substances.

[0035] Reference Figure 8 The rubber plug 38 is made of rubber and has a diameter slightly larger than the inner diameter of the conveying hose 22. This prevents one end of the conveying hose 22 from detaching from the detection cylinder 28 when the reel 21 is winding up, and also prevents external bacteria from entering the conveying hose 22.

[0036] Reference Figure 3 and Figure 4 The oxygen cylinder 14 has an outlet port connected to a solenoid valve 15 via a flange. The solenoid valve 15 is a normally closed type and uses a high-precision control chip to precisely control the oxygen flow and on / off state. A T-shaped connector 18 is fixed to the bottom inner wall of the housing 11 via a connecting bracket. The T-shaped connector 18 is made of metal and can withstand a certain pressure. One end of the solenoid valve 15 is fixedly connected to one port of the T-shaped connector 18 via a flange. A smoke generator 16 is fixed to one inner wall of the housing 11. The smoke generator 16 uses electronic atomization technology to produce non-toxic and harmless smoke. The exhaust end of the smoke generator 16 is fixedly connected to the exhaust pipe 17, and one end of the exhaust pipe 17 is fixedly connected to the other port of the three-way connector 18. The last port of the three-way connector 18 is rotatably connected to the rotary connector 19 (this rotatable connection is achieved by using a rotary connector or air slip ring and adopting a sealing ring structure to achieve a sealed rotatable connection). The rotary connector 19 is connected to the delivery hose 22 wound on the reel 21 and is used to deliver oxygen or smoke into the delivery hose 22.

[0037] Reference Figure 3 and Figure 9 The bottom inner wall of the housing 11 is fixed with four fasteners 40, which are arranged in pairs. A single strap 41 runs through the two fasteners 40 in the same pair. The strap 41 is made of high-strength nylon and is 2-3 cm wide. Velcro is provided near both ends of the outer wall for securing the housing 11 to the user's waist, making it easy for the user to carry.

[0038] Reference Figure 1 , Figure 4 , Figure 8 and Figure 10A display panel 46, an LCD screen, is located on one side of the housing 11 and can display various information. A control box 48, a rectangular box made of plastic, is fixed to the inner bottom wall of the housing 11. The control box 48 houses a microcontroller, a battery, a WIFI module, and a GPS positioning module. The microcontroller uses a high-performance microprocessor to process data from various sensors. The battery is a lithium battery with a capacity of 2000-3000mAh, providing long-term power support for the device. The WIFI module enables wireless communication between the device and external devices, facilitating data transmission and sharing. The GPS positioning module can locate the device's position in real time, making it easy for users to locate the device. The microcontroller is electrically connected to the battery, WIFI module, GPS positioning module, camera 32, ring lighting strip 37, smoke generator 16, solenoid valve 15, display panel 46, and differential pressure sensor 5, coordinating the operation of each component to achieve the various functions of the device. The display panel 46 is used to display data detected by the photoplethysmometer 45, the differential pressure sensor 5, and the camera 32, so that users can easily check their breathing and heart rate.

[0039] Reference Figure 3 and Figure 5 The inner walls of the two sides of the sliding groove 27 that are far apart from each other are fixed with the same corrugated sleeve 39. The detection cylinder 28 is fixedly inserted through the corrugated sleeve 39 to seal the sliding groove 27 when the detection cylinder 28 moves in the sliding groove 27, so as to prevent external dust from entering the housing 11.

[0040] The model number of the smoke generator 16 is MN10-SZ-750.

[0041] In another embodiment: Refer to Figure 9 and Figure 10 A fixed sleeve 42, cylindrical in shape and made of metal, is fixed to the bottom of the housing 11. A sliding plate 43, cylindrical in shape, is slidably connected inside the fixed sleeve 42, allowing it to slide up and down within the sleeve. A spring 44, with a wire diameter of 0.2-0.3 cm, an outer diameter of 1-1.5 cm, a free length of 3-5 cm, and a working length range of 2-4 cm, is fixed between the top of the sliding plate 43 and the inner top wall of the fixed sleeve 42 via a spring seat. This spring provides a certain amount of elasticity. A photoplethysmography (PPG) sensor 45, a high-precision optical sensor, is fixed to the bottom of the sliding plate 43, capable of detecting changes in the user's heart rate. When the housing 11 is secured to the waist with a strap 41, the PPG sensor 45, under the elastic force of the spring 44, adheres tightly to the user's skin, allowing for the detection of heart rate changes.

[0042] The usage of routine respiratory monitoring devices includes the following steps: S1. Before routine respiratory monitoring after the patient leaves the hospital, the delivery hose 22 needs to be inspected to prevent damage or leakage, which could affect oxygen supply and subsequent expiratory flow rate monitoring. Specifically, the motor drives the reel 21 to rotate, releasing the delivery hose 22. Then, one end of the delivery hose 22 is pulled outwards. The rotation of the reel 21 drives the reciprocating screw 24 and rotating drum 35 via the synchronous pulley and belt. The reciprocating screw 24, through the nut 25, drives the guide sleeve 26 to move back and forth along its axis. This allows the guide sleeve 26 to guide the delivery hose 22 and ensures its stable passage through the testing drum 28, preventing bending of the delivery hose 22 upon entering the testing drum 28 and protecting the delivery hose 22. S2. The rotating cylinder 35 drives the rotating shaft 34 to rotate. The rotating shaft 34 drives the rotating ring 31 to rotate through the meshing of the bevel gear 36 and the bevel gear ring 33. Then, the solenoid valve 15 closes, and the smoke generator 16 starts to operate, injecting smoke into the delivery hose 22 through the three-way connector 18 and the rotary connector 19. One end of the delivery hose 22 is sealed by the rubber plug 38. Then, the annular lighting belt 37 runs to provide illumination for the camera 32. When the delivery hose 22 passes through the detection cylinder 28, the rotating ring 31 drives multiple cameras 32 to rotate, monitoring the delivery hose located in the detection cylinder 28. The delivery hose 22 is inspected to check for any leaks. This completes the inspection of the delivery hose 22, ensuring its integrity so that the user's breathing flow can be accurately measured later. After the inspection, oxygen is supplied into the delivery hose 22 through the oxygen cylinder 14 to expel the smoke and prevent it from adhering to the inside of the delivery hose 22 (the smoke detection is a relatively short process, and the smoke has a limited time to adhere to the inner wall of the delivery hose 22. In normal inspection operations, oxygen is introduced after the inspection to completely remove the smoke). S3. Remove the rubber plug 38 and connect one end of the delivery hose 22 to the connection port 3. Then, cover the mask 1 over the user's mouth and nose with the elastic strap 2. Under normal circumstances, when inhaling, outside air enters the inner wall of the mask 1 through the inhalation tube 6. The activated carbon filter layer 8 adsorbs harmful gases such as formaldehyde, toluene, carbon monoxide and odors in the air. The HEPA filter 9 can further purify the nanoparticles in the air. The air exhaled by the user is discharged to the outside through the exhalation tube 4. The pressure difference generated when the airflow passes through the narrow channel is measured by the differential pressure sensor 5 to calculate the flow rate, and thus the exhalation flow data can be obtained. S4. When the differential pressure sensor 5 detects that the user is breathing rapidly, it transmits the signal to the microcontroller in the control box 48 and activates the solenoid valve 15. The oxygen in the oxygen cylinder 14 enters the delivery hose 22 through the three-way connector 18 and the rotary connector 19 to provide oxygen to the user. The microcontroller also transmits the signal to the user's family member's mobile phone through the WIFI module to warn the family member and send an emergency signal to the nearby hospital to facilitate timely emergency treatment of the patient. S5. When not needed to go out, the housing 11 can be placed on the table for use. When needed to go out, the housing 11 can be tied to the user's waist by the strap 41 and the Velcro thereon, making it easy for the user to carry and use. The photoplethysmography sensor 45 is in close contact with the user's skin under the elastic force of the spring 44, and the patient's heart rate changes can be detected by the photoplethysmography sensor 45. S6. When the device is not in use, the motor drives the reel 21 to rotate in the opposite direction. The reel 21 drives the reciprocating screw 24 to rotate through the synchronous pulley and synchronous belt. Under the guidance of the guide sleeve 26, the conveying hose 22 can be evenly wound around the outer wall of the reel 21 to avoid the reel 21 from getting tangled and damaged.

[0043] However, as is well known to those skilled in the art, the working principles and wiring methods of the photoplethysmography sensor 45, camera 32, ring lighting strip 37, smoke generator 16, solenoid valve 15, display panel 46 and differential pressure sensor 5 are all conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An exhalation flow rate data acquisition assembly, comprising: Includes a mask (1), the bottom of which is provided with an elastic strap (2), and the top of which is integrally formed with a connection port (3) for injecting oxygen into the mask (1) through the connection port (3). The sides of the mask (1) are respectively provided with an exhalation tube (4) and an inhalation tube (6), and the exhalation tube (4) is fixedly connected to and communicates with the mask (1). The exhalation tube (4) is provided with a differential pressure sensor (5), and the probe of the differential pressure sensor (5) is fixedly extended into the exhalation tube (4). A connector (7) is fixed on one side of the inhalation tube (6). The outer wall of the connector (7) is provided with external threads. One end of the connector (7) extends into the mask (1) and is threadedly connected to the mask (1). An activated carbon filter layer (8) and a HEPA filter (9) are provided inside the inhalation tube (6). The differential pressure sensor (5) is used to monitor the exhalation flow rate by measuring the pressure difference when the airflow passes through the exhalation tube (4), and the activated carbon filter layer (8) and HEPA filter (9) are used to filter and purify the outside air.

2. An exhalation flow rate data acquisition assembly according to claim 1, wherein, The connector (7), exhalation tube (4) and connection port (3) are all equipped with check valves (10) to allow one-way air intake through the connection port (3) and inhalation tube (6) and one-way air output through the exhalation tube (4).

3. A daily respiratory monitoring device, including the expiratory flow rate data acquisition component as described in claim 1, and further including a housing (11), the housing (11) being used to store a mask (1), a cover plate (12) being rotatably connected to one side of the top of the housing (11), a plurality of C-shaped clamps (13) being fixed to the inner wall of the bottom of the housing (11), the same oxygen cylinder (14) being clamped in the plurality of C-shaped clamps (13), a roller (21) being rotatably connected inside the housing (11), a delivery hose (22) being wound up on the outer wall of the roller (21), and one end of the delivery hose (22) being inserted into the connection port (3); It also includes a winding structure for uniformly winding the delivery hose (22) onto a reel (21), the winding structure including two supports (20) fixed to the inner wall of the bottom of the housing (11), the reel (21) being rotatably connected between the two supports (20); It also includes a detection structure for detecting air leakage in the delivery hose (22), the detection structure including a detection cylinder (28) and a plurality of cameras (32) disposed inside the detection cylinder (28). wherein The delivery hose (22) is used to inject oxygen into the mask (1), and the winding structure is used to evenly wind up the delivery hose (22) when the spool (21) rotates to avoid entanglement and damage.

4. The daily respiratory monitoring device of claim 3, wherein, The outlet port of the oxygen cylinder (14) is connected to a solenoid valve (15) via a flange. The bottom inner wall of the housing (11) is fixed with a three-way connector (18) via a connecting bracket. One end of the solenoid valve (15) is fixedly connected to one of the ports of the three-way connector (18). A smoke generator (16) is fixedly connected to one side inner wall of the housing (11). The outlet end of the smoke generator (16) is fixedly connected to an exhaust pipe (17), and one end of the exhaust pipe (17) is fixedly connected to the other port of the three-way connector (18). The last port of the three-way connector (18) is rotatably connected to a rotary connector (19), and the rotary connector (19) is connected to a delivery hose (22) wound on a reel (21). The smoke generator (16) is used to inject smoke into the delivery hose (22) so as to detect air leakage through the detection structure.

5. The ambulatory respiratory monitoring device of claim 4, wherein, The winding structure also includes two crossbeams (23), which are fixedly connected to the corresponding brackets (20) respectively. A reciprocating screw (24) is rotatably connected between the two crossbeams (23). A nut (25) is threaded on the outer wall of the reciprocating screw (24). A guide sleeve (26) is fixed on the top of the nut (25). One end of the conveying hose (22) passes through the guide sleeve (26). One end of the rotary joint (19) passes through the reel (21). A sliding groove (27) is provided on one side of the housing (11). The detection cylinder (28) is slidably disposed in the sliding groove (27). A connecting rod (47) is fixed between the nut (25) and the detection cylinder (28). In this process, the motor drives the reel (21) to rotate, and the reel (21) drives the reciprocating screw (24) to rotate through the synchronous pulley and synchronous belt, so that the nut (25) moves along the reciprocating screw (24), thereby guiding the conveying hose (22) to be evenly wound around the outer wall of the reel (21) through the guide sleeve (26).

6. The daily respiratory monitoring device of claim 5, wherein, The detection structure also includes a rotating ring (31) rotatably connected to the inner wall of the detection cylinder (28). Multiple cameras (32) are fixed to the inner wall of the rotating ring (31). Both ends of the detection cylinder (28) are provided with holes (29), and one end of the delivery hose (22) passes through the hole (29) and the rotating ring (31) in sequence. A bevel ring (33) is fixed to one side of the rotating ring (31). A rotating cylinder (35) is rotatably connected to one side of the inner wall of the housing (11). A rotating shaft (34) is slidably connected inside the rotating cylinder (35). One end of the rotating shaft (34) extends rotatably into the detection cylinder (28) and is fixed with a bevel gear (36). The bevel gear (36) meshes with the bevel ring (33). An annular lighting strip (37) is fixed to the inner wall of the detection cylinder (28) away from the reel (21). Among them, the rotating shaft (34) drives the rotating ring (31) to rotate through the cooperation of the bevel gear ring (33) and the bevel gear (36), so that the camera (32) can fully inspect the outer wall of the delivery hose (22), and the ring lighting strip (37) is used to provide lighting for the camera (32).

7. The daily respiratory monitoring device according to claim 6, characterized in that, The reel (21), reciprocating screw (24) and rotating cylinder (35) are connected by a synchronous pulley and a synchronous belt, so that when the reel (21) rotates, it synchronously drives the guide sleeve (26) and the detection cylinder (28) to reciprocate. The inner walls of the two sides of the sliding groove (27) that are far apart from each other are fixed with the same corrugated sleeve (39). The detection cylinder (28) is fixed through the corrugated sleeve (39) to seal the sliding groove (27) to prevent dust from entering when the detection cylinder (28) moves.

8. The daily respiratory monitoring device according to claim 7, characterized in that, O-rings (30) are fixed in both holes (29). One end of the delivery hose (22) passes through the O-rings (30). A rubber plug (38) is inserted into the end of the delivery hose (22) away from the reel (21). A display panel (46) is provided on one side of the housing (11). A control box (48) is fixed on the bottom inner wall of the housing (11). The control box (48) contains a microcontroller, a battery, a WIFI module, and a GPS positioning module. The microcontroller is electrically connected to the battery, the WIFI module, the GPS positioning module, the camera (32), the ring lighting strip (37), the smoke generator (16), the solenoid valve (15), the display panel (46), and the differential pressure sensor (5). The O-ring (30) is used to protect the delivery hose (22) from frequent bending and damage, and the rubber plug (38) is used to seal the end of the delivery hose (22) and prevent bacteria from entering.

9. The daily respiratory monitoring device according to claim 8, characterized in that, The bottom inner wall of the housing (11) is fixed with four fixing buckles (40). The four fixing buckles (40) are in pairs. The same strap (41) runs through the two fixing buckles (40) in the same group. The outer wall of the strap (41) is provided with Velcro near both ends. The shell (11) is secured to the user's waist with straps (41) and Velcro, making it easy to carry.

10. The daily respiratory monitoring device according to claim 9, characterized in that, A fixed sleeve (42) is fixed to the bottom of the housing (11), and a sliding plate (43) is slidably connected inside the fixed sleeve (42). A spring (44) is fixed between the top of the sliding plate (43) and the top inner wall of the fixed sleeve (42) through a spring seat. A photoplethysmography sensor (45) is fixed to the bottom of the sliding plate (43). The photoplethysmography sensor (45) is pressed against the user's skin by the elastic force of the spring (44) to detect changes in heart rate. The photoplethysmography sensor (45) is electrically connected to the microcontroller. The display panel (46) is used to display the data detected by the photoplethysmography sensor (45), the differential pressure sensor (5), and the camera (32).

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