Automatic intelligent airway cleaning and sputum suction system

Abstract

The invention discloses an automatic intelligent airway cleaning and sputum suction system, and particularly relates to the technical field of medical equipment, the automatic intelligent airway cleaning and sputum suction system comprises a control box, a sputum suction assembly and a cleaning assembly, the sputum suction assembly comprises a sputum suction tube assembly and a power mechanism, the sputum suction tube assembly comprises an outer tube and an inner tube arranged in the outer tube, and the outer tube and the inner tube are both fixed to one side of the control box; the end, away from the control box, of the sputum suction pipe assembly is connected with a trachea cannula of a patient through a trachea cannula connector, the end, away from the control box, of the inner pipe is provided with a sputum suction main pipe, the inner pipe is communicated with the sputum suction main pipe through a connecting hard pipe, and a sputum suction branch pipe is fixed to the outer wall of the sputum suction main pipe. The system realizes intelligent monitoring and full-automatic operation, has self-cleaning and disinfecting functions, can be connected with a breathing machine, improves the safety and efficiency of airway management, reduces the occurrence of respiratory system complications, completely implements unsupervised management, can reduce the contact time between doctors and patients, and greatly reduces the labor intensity of medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an automatic intelligent airway cleaning and sputum suction system. Background Art

[0002] In the ICU environment, suction is an important method to maintain airway patency and improve alveolar ventilation and gas exchange function. It is one of the most commonly used measures in airway management for mechanically ventilated patients. Patients face the problem of accumulation of airway secretions due to the use of invasive ventilators, which not only increases the risk of infection, but also may cause airway obstruction and affect respiratory efficiency. The traditional manual suction method is not only time-consuming and labor-intensive, but may also cause airway damage due to improper operation, increasing the risk of cross-infection. Although electric suction devices provide a convenient and efficient way to suction sputum in medical clinics, they inevitably have some disadvantages. First, its operation is relatively complicated and requires certain skills, otherwise it may lead to poor suction effect or harm to patients. Secondly, if it is not disinfected and maintained properly, it will increase the risk of cross-infection between patients. In addition, improper use may cause airway damage, such as respiratory mucosal damage, bleeding or trauma caused by excessive suction or too deep insertion of the suction tube. During the suction process, patients may also suffer from transient hypoxemia. The use of electric suction devices may irritate the patient's respiratory tract, causing discomfort reactions such as coughing, nausea, and vomiting. At the same time, the noise and vibration generated will affect the patient's rest and comfort. Equipment failures such as insufficient suction and power problems may also affect the timeliness and effectiveness of the operation. However, existing suction devices are not only inefficient and require high workload for medical staff, but also prone to complications such as respiratory mucosal damage, hypoxemia, atelectasis, infection, arrhythmia, and tracheospasm.

[0003] A Chinese patent with publication number CN118142002A discloses a fully automatic intelligent sputum suction system for respiratory medicine, including an electric sputum suction machine, a collecting tank is arranged on the surface of the electric sputum suction machine, the number of the collecting tanks is two, a cleaning mechanism is arranged on the surface of the electric sputum suction machine, and a discharge mechanism is arranged on the surface of the electric sputum suction machine; the cleaning mechanism includes a dilution unit. With this fully automatic intelligent sputum suction system for respiratory medicine, when a user uses the electric sputum suction machine to suction sputum from a patient, the sputum and other secretions sucked into the collecting tank can be injected into the collecting tank before the operation, and a certain amount of water and alkaline solution can be added to dilute the extracted sputum or other secretions, so as to avoid the purulent sputum extracted by the patient from sticking to the collecting tank, and also to avoid the sputum or other secretions being too viscous to stick to the collecting tank for cleaning.

[0004] A Chinese patent with publication number CN115453274A discloses an automatic sputum suction device for remote control, comprising a body, a sputum suction tube, a sputum suction tube driving mechanism, an aspirator connecting tube, and a water spraying pipe. A sputum suction tube is arranged on one side of the body, one end of the sputum suction tube enters the patient's respiratory tract, and the other end of the sputum suction tube is connected to a suction device; the sputum suction tube passes through the sputum suction tube driving mechanism; an airway humidification water spraying device is arranged on the other side of the body, and a sputum storage bottle is also connected to the suction device: an adjustment control panel is also arranged on the front surface of the body, and the adjustment control panel is provided with corresponding function adjustment buttons; its advantages are: it can reduce the frequent operation of medical staff, improve work efficiency, and provide convenience for medical staff; at the same time, according to the characteristics of the patient, the patient can be suctioned according to the set pressure and frequency interval, and it can be remotely controlled to avoid infection and spread.

[0005] In the above two invention patents, although the operation can be performed automatically and remotely, it is not fully automated. There is no intelligent monitoring system specifically for the ventilator pressure and sound modules. At the same time, it does not have self-cleaning and disinfection functions. Some of them require manual operation, which still increases the risk of infection for medical staff. Therefore, it is necessary to study an automatic intelligent airway cleaning and sputum suction system that can be applied to critically ill patients with invasive ventilator-assisted ventilation. It aims to improve the safety and efficiency of airway management and reduce the occurrence of respiratory complications through intelligent monitoring, precise analysis, fully automated operation, self-cleaning and disinfection functions, and can be connected to the ventilator module for feedback. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic intelligent airway cleaning and sputum suction system, which can realize intelligent monitoring, fully automated operation, self-cleaning and disinfection functions, can be connected to a ventilator, improve the safety and efficiency of airway management, reduce the occurrence of respiratory complications, and implement completely unsupervised management, which can reduce the contact time between doctors and patients and greatly reduce the labor intensity of medical staff.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic intelligent airway cleaning and sputum suction system, connected to an invasive ventilator, comprising a control box and a sputum suction component and a cleaning component arranged inside the control box, wherein the sputum suction component comprises a sputum suction tube component and a power mechanism.

[0008] The sputum suction tube assembly includes an outer tube and an inner tube arranged inside the outer tube, the outer tube and the inner tube are both fixed to one side of the control box, the end of the sputum suction tube assembly away from the control box is connected to the endotracheal tube of a critically ill patient receiving invasive ventilator-assisted ventilation through an endotracheal tube joint, the end of the inner tube away from the control box is provided with a sputum suction main tube, the inner tube is connected to the sputum suction main tube by a connecting hard tube, and a sputum suction branch tube is fixed to the outer wall of the sputum suction main tube.

[0009] A travel drive mechanism for driving the sputum suction main pipe and the sputum suction branch pipe to move is arranged inside the endotracheal tube joint, and a rotation drive mechanism for driving the sputum suction main pipe and the sputum suction branch pipe to rotate is arranged outside the connecting hard pipe.

[0010] A sound sensor and a gas pressure sensor are fixed to the inner wall of one end of the endotracheal tube joint close to the endotracheal tube. The sound sensor is used to monitor the choking sound at the endotracheal tube, and the gas pressure sensor is used to monitor the gas pressure at the endotracheal tube. When abnormal choking sound and high air pressure are detected in the endotracheal tube, the travel drive mechanism is triggered to drive the sputum suction main pipe and the sputum suction branch pipe to move into the endotracheal tube to perform automatic sputum suction.

[0011] Preferably, the travel drive mechanism includes a driving wheel and a guide wheel respectively arranged on both sides of the valve, the driving wheel and the guide wheel are fixed to the inner wall of the endotracheal tube joint, and a micro servo motor for driving the driving wheel to rotate is fixed to the outer wall of the endotracheal tube joint. The rotation of the driving wheel drives the inner tube to move through the friction between the driving wheel and the inner tube, thereby driving the sputum suction main tube and the sputum suction branch tube to move into the endotracheal tube for suction.

[0012] Preferably, the rotary drive mechanism includes a shell sleeved on the outside of the connecting rigid tube, a first bevel gear is provided inside the shell, and the first bevel gear is fixedly sleeved on the outer wall of the connecting rigid tube, a second bevel gear is meshed with the rear side of the first bevel gear, a gear is provided on the rear side of the second bevel gear, the second bevel gear and the gear are rotatably connected to the inner rear wall of the shell through the same rotating shaft, both sides of the shell are rotatably connected to the connecting rigid tube, and the rear end of the shell is slidably connected to the inner wall of the endotracheal tube connector through a slide rail.

[0013] Preferably, a rack is provided at the bottom of the suction main pipe, and the rack is fixed on the inner wall of the endotracheal tube connector, the bottom of the outer shell is open, and the bottom of the gear extends out of the bottom of the outer shell through the opening, and when the gear moves to engage with the rack, the gear moves along the rack and rotates simultaneously to drive the suction main pipe and the suction branch pipe to rotate.

[0014] Preferably, the endotracheal tube connector is divided into an installation cavity and a breathing gas delivery cavity distributed on the left and right by a fixed valve and a movable valve. The suction main pipe, connecting hard pipe, suction branch pipe, travel drive mechanism and rotation drive mechanism are all arranged inside the installation cavity. The ventilator pipeline of the invasive ventilator is connected with the breathing gas delivery cavity through the pipeline connector. The gas of the invasive ventilator enters the endotracheal tube through the breathing gas delivery cavity for the patient to breathe, and the gas will not enter the suction tube assembly.

[0015] Preferably, the fixed flap is fixed to the inner wall of the endotracheal tube connector, the valve and the fixed flap are hingedly connected by a spring hinge, the valve is arranged on one side of the suction main pipe and the suction branch pipe, and a sealing gasket is fixed on the side of the valve away from the suction branch pipe. During suction, the suction main pipe and the suction branch pipe move to push open the valve to pass through the respiratory gas delivery cavity and enter the endotracheal tube. At this time, the valve cover closes the pipe connector at the top of the pipe connector, so that gas does not enter the suction tube assembly.

[0016] Preferably, the power mechanism includes a sputum collection bottle and a vacuum pump arranged inside the control box, the ends of the outer tube and the inner tube close to the control box pass through the control box and are connected to the sputum collection bottle, the air inlet pipe of the vacuum pump is connected to the sputum collection bottle, and the exhaust pipe of the vacuum pump extends out of the control box.

[0017] Preferably, the cleaning component includes a flushing liquid bottle disposed inside the control box, the flushing liquid bottle is located at the rear side of the sputum collection bottle, and the flushing liquid bottle is connected to one end of the outer tube located in the control box through a connecting tube.

[0018] Preferably, a delivery pump for delivering the flushing liquid is provided in the flushing liquid bottle. After the sputum suction is completed, the delivery pump delivers the flushing liquid to the outer tube and the inner tube for automatic disinfection and cleaning.

[0019] Preferably, a touch controller is fixed to the front end of the control box, the sound sensor and the gas pressure sensor are connected to the input end of the touch controller through an A / D converter, and the invasive ventilator, micro servo motor, vacuum pump and flushing liquid pump are connected to the output end of the touch controller through a D / A converter.

[0020] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0021] 1. The automatic intelligent airway cleaning and sputum suction system of the present invention can automatically monitor the airway pressure and choking reaction sound of patients using invasive ventilator-assisted ventilation, and automatically start the sputum suction component to insert, rotate, suck and withdraw the sputum suction tube to achieve sputum suction work. After the sputum suction is completed, the cleaning component is started to self-disinfect and clean the sputum suction tube. Compared with the prior art, the present invention realizes intelligent monitoring, fully automated operation, and has self-cleaning and disinfection functions. It can be connected to a ventilator, improves the safety and efficiency of airway management, and reduces the occurrence of respiratory complications;

[0022] 2. The automatic intelligent airway cleaning and sputum suction system of the present invention is completely managed without supervision, which can reduce the contact time between doctors and patients and greatly reduce the labor intensity of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the installation of the automatic intelligent airway cleaning and sputum suction system and the invasive ventilator of the present invention;

[0024] Figure 2 It is a structural diagram of the power mechanism and cleaning component of the present invention;

[0025] Figure 3 It is a structural diagram of the sputum suction component and the cleaning component of the present invention;

[0026] Figure 4 It is a partial rear view of the endotracheal tube connector and sputum suction tube assembly of the present invention;

[0027] Figure 5 It is a partial front cross-sectional view of the endotracheal tube connector and the sputum suction tube assembly of the present invention when sputum is not suctioned;

[0028] Figure 6 It is a partial front cross-sectional view of the endotracheal tube joint and the sputum suction tube assembly during sputum suction of the present invention;

[0029] Figure 7 for Figure 5 Stereoscopic image of

[0030] Figure 8 It is a partial top view of the endotracheal tube connector and the sputum suction tube assembly of the present invention;

[0031] Fig. 9 for Figure 8 Enlarged view of part A in the middle;

[0032] Fig.10 This is a control system diagram of the present invention.

[0033] Description of reference numerals:

[0034] 1. Control box;

[0035] 2 suction tube assembly, 21 outer tube, 22 inner tube, 23 suction main tube, 24 connecting hard tube, 25 suction branch tube;

[0036] 3 endotracheal tube connector, 31 pipeline connector, 32 fixed valve, 33 flap;

[0037] 4 travel drive mechanism, 41 driving wheel, 42 micro servo motor, 43 guide wheel, 44 rotation drive mechanism, 45 rack;

[0038] 441 housing, 442 first bevel gear, 443 second bevel gear, 444 gear, 445 slide rail;

[0039] 5 power mechanism, 51 sputum collection bottle, 52 vacuum pump, 53 air inlet pipe, 54 exhaust pipe;

[0040] 6 flushing liquid bottles, 61 connecting tubes;

[0041] 7 sound sensor, 8 gas pressure sensor, 9 invasive ventilator, 91 ventilator pipeline, 10 endotracheal tube, 11 touch controller. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] The present invention provides Figure 1-10 An automatic intelligent airway cleaning and suction system is shown, which is connected to an invasive ventilator 9. The system includes a control box 1 and a suction component and a cleaning component arranged inside the control box 1. A touch controller 11 for controlling the operation of the suction component and the cleaning component is fixed to the front end of the control box 1, and the invasive ventilator 9 is connected to the output end of the touch controller 11 through a D / A converter.

[0044] like Figure 2-4 and Figure 6-8 As shown, the sputum suction assembly includes a sputum suction tube assembly 2 and a power mechanism 5, the sputum suction tube assembly 2 includes an outer tube 21 and an inner tube 22 arranged inside the outer tube 21, the outer tube 21 and the inner tube 22 are both fixed to one side of the control box 1, the outer tube 21 is made of flexible materials such as plastic, the end of the sputum suction tube assembly 2 away from the control box 1 is connected to the endotracheal tube 10 of a critically ill patient receiving invasive ventilator-assisted ventilation through an endotracheal tube joint 3, the end of the inner tube 22 away from the control box 1 is provided with a sputum suction main pipe 23, the inner tube 22 and the sputum suction main pipe 23 are connected through a connecting hard pipe 24, the sputum suction main pipe 23 is rotatably connected to the inner tube 22 through a sealed bearing, a sputum suction branch pipe 25 is fixed to the outer wall of the sputum suction main pipe 23, and the connecting hard pipe 24 is fixed to the sputum suction branch pipe 25.

[0045] The power mechanism 5 includes a sputum collection bottle 51 and a vacuum pump 52 arranged inside the control box 1. The ends of the outer tube 21 and the inner tube 22 close to the control box 1 pass through the control box 1 and are connected to the sputum collection bottle 51. The air inlet pipe 53 of the vacuum pump 52 is connected to the sputum collection bottle 51, and the exhaust pipe 54 of the vacuum pump 52 extends out of the control box 1. The vacuum pump 52 is connected to the output end of the touch controller 11 through a D / A converter. The suction frequency, suction time and suction intensity of the vacuum pump 52 can be manually or automatically controlled through the touch controller 11. The suction intensity has three optional gears: first gear 90-100mmHg, second gear 100-110mmHg, and third gear 110-120mmHg.

[0046] The endotracheal tube connector 3 is provided with a travel drive mechanism 4 for driving the sputum suction main tube 23 and the sputum suction branch tube 25 to move. Specifically, the travel drive mechanism 4 includes a driving wheel 41 and a guide wheel 43 respectively arranged on both sides of the valve 33. The driving wheel 41 and the guide wheel 43 are both fixed to the inner wall of the endotracheal tube connector 3. The outer wall of the endotracheal tube connector 3 is fixed with a micro servo motor 42 for driving the driving wheel 41 to rotate. The micro servo motor 42 is connected to the output end of the touch controller 11 through a D / A converter. The driving wheel 41 rotates to drive the inner tube 22 to move through the friction between the driving wheel 41 and the inner tube 22.

[0047] At the same time, a rotating drive mechanism 44 is provided on the outer side of the connecting rigid tube 24 for driving the sputum suction main tube 23 and the sputum suction branch tube 25 to rotate, thereby driving the sputum suction main tube 23 and the sputum suction branch tube 25 to rotate for sufficient sputum suction, and the rotating drive mechanism 44 includes a shell 441 sleeved on the outer side of the connecting rigid tube 24, a first bevel gear 442 is provided inside the shell 441, and the first bevel gear 442 is fixedly sleeved on the outer wall of the connecting rigid tube 24, a second bevel gear 443 is meshed with the rear side of the first bevel gear 442, a gear 444 is provided on the rear side of the second bevel gear 443, and the second bevel gear 444 is meshed with the rear side of the second bevel gear 444. The wheel 443 and the gear 444 are rotatably connected to the inner rear wall of the shell 441 through the same rotating shaft, the two sides of the shell 441 are rotatably connected to the connecting hard tube 24 through bearings, and the rear end of the shell 441 is slidably connected to the inner wall of the endotracheal tube connector 3 through a slide rail 445. A rack 45 is provided at the bottom of the suction main pipe 23, and the rack 45 is fixed on the inner wall of the endotracheal tube connector 3. The bottom of the shell 441 is open, and the bottom of the gear 444 extends out of the bottom of the shell 441 through the opening. When the gear 444 moves to engage with the rack 45, the gear 444 moves along the rack 45 and rotates at the same time.

[0048] Moreover, a sound sensor 7 and a gas pressure sensor 8 are fixed to the inner wall of one end of the endotracheal tube connector 3 close to the endotracheal tube 10. The sound sensor 7 is used to monitor the choking sound at the endotracheal tube 10. The sound sensor 7 is a German metool sound sensor, model KS08, and its detection principle is: a sound-sensitive capacitive electret microphone is built in, and the sound wave makes the electret film in the microphone vibrate, resulting in a change in capacitance, and generating a voltage corresponding to the change.

[0049] The gas pressure sensor 8 is used to monitor the gas pressure at the endotracheal tube 10. The model of the gas pressure sensor 8 is 1451-250G / A-WT / N. The detection principle is: based on the relationship between the force or deformation signal generated by the measured gas on the sensor sensitive element and the gas pressure, the sensor detects the change of the force or deformation signal and converts it into an electrical signal output, thereby realizing the measurement of the gas pressure. The sound sensor 7 and the gas pressure sensor 8 are connected to the input end of the touch controller 11 through an A / D converter.

[0050] When the sound sensor 7 and the gas pressure sensor 8 detect abnormal choking sounds and high air pressure in the endotracheal tube 10, the signal is transmitted to the touch controller 11, and the touch controller 11 starts the micro servo motor 42 to drive the driving wheel 41 to rotate, driving the inner tube 22 to move toward the endotracheal tube 10, thereby driving the sputum suction main tube 23, the connecting hard tube 24 and the sputum suction branch tube 25 to move, so that the sputum suction main tube 23 and the sputum suction branch tube 25 enter the endotracheal tube 10. At the same time, the touch controller 11 drives the vacuum pump 52 to draw negative pressure in the sputum collection bottle 51. Under the action of negative pressure, the sputum in the endotracheal tube 10 enters the sputum collection bottle 51 along the sputum suction main tube 23, the sputum suction branch tube 25 and the inner tube 22 to be collected, thereby realizing intelligent monitoring and fully automated sputum suction operation, and improving the safety and efficiency of airway management;

[0051] At the same time, after the suction main tube 23 and the suction branch tube 25 enter the endotracheal tube 10, when the gear 444 on the connecting rigid tube 24 moves to engage with the rack 45, the suction main tube 23, the connecting rigid tube 24 and the suction branch tube 25 continue to move so that the gear 444 rotates along the rack 45. The rotation of the rack 45 drives the connecting rigid tube 24 to rotate through the transmission of the second bevel gear 443 and the first bevel gear 442, thereby driving the suction main tube 23 and the suction branch tube 25 to rotate to fully suction the sputum in the endotracheal tube 10 and improve the suction effect.

[0052] In order to prevent the gas of the invasive ventilator 9 from entering the sputum suction tube assembly 2, Figure 5-7 As shown, the endotracheal tube connector 3 is divided into a mounting cavity and a breathing gas delivery cavity distributed on the left and right by a fixed flap 32 and a flap 33. The sputum suction main pipe 23, the connecting hard pipe 24, the sputum suction branch pipe 25, the traveling drive mechanism 4 and the rotating drive mechanism 44 are all arranged inside the mounting cavity. The ventilator pipeline 91 of the invasive ventilator 9 is connected with the breathing gas delivery cavity through the pipeline connector 31. The gas of the invasive ventilator 9 enters the endotracheal tube 10 through the breathing gas delivery cavity for the patient to breathe, and the gas will not enter the sputum suction tube assembly 2 under the obstruction of the fixed flap 32 and the flap 33, thereby ensuring the patient's breathing effect;

[0053] The fixed flap 32 is fixed to the inner wall of the endotracheal tube connector 3, and the flap 33 is hinged to the fixed flap 32 by a spring hinge. The elastic force of the spring hinge facilitates the automatic closing of the flap 33. The flap 33 is arranged on one side of the sputum suction main pipe 23 and the sputum suction branch pipe 25, and a sealing pad is fixed on the side of the flap 33 away from the sputum suction branch pipe 25. When suctioning, the sputum suction main pipe 23 and the sputum suction branch pipe 25 move to push open the flap 33 to pass through the respiratory gas delivery cavity and enter the endotracheal tube 10. At this time, the flap 33 covers the top of the pipe connector 31 to close the pipe connector 31. Figure 6 As shown, the gas will not enter the suction tube assembly 2 due to the obstruction of the fixed flap 32 .

[0054] like Figure 2-3 As shown, the cleaning component includes a flushing liquid bottle 6 arranged inside the control box 1, and the flushing liquid bottle 6 is located at the rear side of the sputum collection bottle 51. The flushing liquid in the flushing liquid bottle 6 is a disinfectant. The flushing liquid bottle 6 is connected to one end of the outer tube 21 located in the control box 1 through a connecting pipe 61, and a delivery pump for delivering the flushing liquid is provided in the flushing liquid bottle 6.

[0055] After the suction is completed, the suction assembly is closed to reset the suction tube assembly 2, and then the touch controller 11 is started to start the delivery pump to deliver the flushing liquid in the flushing liquid bottle 6 to the outer tube 21. A part of the flushing liquid in the outer tube 21 flows into the sputum collection bottle 51 for collection, and the other part of the flushing liquid enters the suction main pipe 23 and the suction branch pipe 25. The flushing liquid then flows into the sputum collection bottle 51 through the suction main pipe 23, the suction branch pipe 25, the connecting hard pipe 24 and the inner tube 22, thereby realizing automatic disinfection and cleaning of the suction tube assembly 2.

[0056] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic intelligent airway cleaning and sputum suction system connected to an invasive ventilator (9), characterized in that: It comprises a control box (1) and a sputum suction component and a cleaning component arranged inside the control box (1), wherein the sputum suction component comprises a sputum suction tube component (2) and a power mechanism (5); The sputum suction tube assembly (2) comprises an outer tube (21) and an inner tube (22) arranged inside the outer tube (21); the outer tube (21) and the inner tube (22) are both fixed to one side of the control box (1); the end of the sputum suction tube assembly (2) away from the control box (1) is connected to the endotracheal tube (10) of a critically ill patient receiving invasive ventilator-assisted ventilation via an endotracheal tube joint (3); the end of the inner tube (22) away from the control box (1) is provided with a sputum suction main tube (23); the inner tube (22) and the sputum suction main tube (23) are connected via a connecting hard tube (24); and a sputum suction branch tube (25) is fixed to the outer wall of the sputum suction main tube (23); The endotracheal tube connector (3) is provided with a travel drive mechanism (4) for driving the sputum suction main pipe (23) and the sputum suction branch pipe (25) to move, and the outside of the connecting hard pipe (24) is provided with a rotation drive mechanism (44) for driving the sputum suction main pipe (23) and the sputum suction branch pipe (25) to rotate; A sound sensor (7) and a gas pressure sensor (8) are fixed to the inner wall of one end of the endotracheal tube connector (3) close to the endotracheal tube (10); the sound sensor (7) is used to monitor the choking sound at the endotracheal tube (10); and the gas pressure sensor (8) is used to monitor the gas pressure at the endotracheal tube (10); when abnormal choking sound and high gas pressure are detected in the endotracheal tube (10), the advancing driving mechanism (4) is triggered to drive the sputum suction main pipe (23) and the sputum suction branch pipe (25) to advance into the endotracheal tube (10) to perform automatic sputum suction.

2. The automatic intelligent airway cleaning and sputum suction system according to claim 1, characterized in that: The travel drive mechanism (4) comprises a driving wheel (41) and a guide wheel (43) respectively arranged on both sides of the valve (33); the driving wheel (41) and the guide wheel (43) are both fixed to the inner wall of the tracheal tube joint (3); a micro servo motor (42) for driving the driving wheel (41) to rotate is fixed to the outer wall of the tracheal tube joint (3); the driving wheel (41) rotates to drive the inner tube (22) to move through the friction between the driving wheel (41) and the inner tube (22).

3. The automatic intelligent airway cleaning and sputum suction system according to claim 1, characterized in that: The rotary drive mechanism (44) comprises a housing (441) sleeved on the outside of the connecting hard tube (24); a first bevel gear (442) is provided inside the housing (441), and the first bevel gear (442) is fixedly sleeved on the outer wall of the connecting hard tube (24); a second bevel gear (443) is meshed on the rear side of the first bevel gear (442); a gear (444) is provided on the rear side of the second bevel gear (443); the second bevel gear (443) and the gear (444) are rotatably connected to the rear wall inside the housing (441) via the same rotating shaft; Both sides of the shell (441) are rotatably connected to the connecting hard pipe (24), and the rear end of the shell (441) is slidably connected to the inner wall of the tracheal cannula joint (3) via a slide rail (445).

4. The automatic intelligent airway cleaning and sputum suction system according to claim 3, characterized in that: A rack (45) is provided at the bottom of the sputum suction main pipe (23), and the rack (45) is fixed to the inner wall of the endotracheal tube connector (3). The bottom of the shell (441) is open, and the bottom of the gear (444) extends out of the bottom of the shell (441) through the opening. When the gear (444) moves to engage with the rack (45), the gear (444) moves along the rack (45) and rotates at the same time.

5. The automatic intelligent airway cleaning and sputum suction system according to claim 1, characterized in that: The endotracheal tube connector (3) is divided into a mounting chamber and a breathing gas delivery chamber distributed on the left and right by a fixed valve (32) and a movable valve (33). The sputum suction main pipe (23), the connecting hard pipe (24), the sputum suction branch pipe (25), the travel drive mechanism (4) and the rotation drive mechanism (44) are all arranged inside the mounting chamber. The ventilator pipeline (91) of the invasive ventilator (9) is connected to the breathing gas delivery chamber through the pipeline connector (31). The gas of the invasive ventilator (9) enters the endotracheal tube (10) through the breathing gas delivery chamber for the patient to breathe, and the gas does not enter the sputum suction tube assembly (2).

6. The automatic intelligent airway cleaning and sputum suction system according to claim 5, characterized in that: The fixed flap (32) is fixed to the inner wall of the endotracheal tube connector (3), and the flap (33) is hinged to the fixed flap (32) via a spring hinge. The flap (33) is arranged on one side of the sputum suction main pipe (23) and the sputum suction branch pipe (25), and a sealing pad is fixed on the side of the flap (33) away from the sputum suction branch pipe (25). When sputum is suctioned, the sputum suction main pipe (23) and the sputum suction branch pipe (25) move to push open the flap (33) and pass through the respiratory gas delivery cavity into the endotracheal tube (10). At this time, the flap (33) covers the top of the pipeline connector (31) to close the pipeline connector (31), so that gas does not enter the sputum suction tube assembly (2).

7. The automatic intelligent airway cleaning and sputum suction system according to claim 1, characterized in that: The power mechanism (5) comprises a sputum collection bottle (51) and a vacuum pump (52) arranged inside the control box (1); one end of the outer tube (21) and the inner tube (22) close to the control box (1) passes through the control box (1) and is connected to the sputum collection bottle (51); an air inlet pipe (53) of the vacuum pump (52) is connected to the sputum collection bottle (51), and an exhaust pipe (54) of the vacuum pump (52) extends out of the control box (1).

8. The automatic intelligent airway cleaning and sputum suction system according to claim 7, characterized in that: The cleaning component comprises a flushing liquid bottle (6) arranged inside the control box (1), the flushing liquid bottle (6) being located at the rear side of the sputum collection bottle (51), and the flushing liquid bottle (6) being connected to one end of the outer tube (21) located inside the control box (1) via a connecting tube (61).

9. The automatic intelligent airway cleaning and sputum suction system according to claim 8, characterized in that: The flushing liquid bottle (6) is provided with a delivery pump for delivering the flushing liquid. After the sputum suction is completed, the delivery pump delivers the flushing liquid to the outer tube (21) and the inner tube (22) for automatic disinfection and cleaning.

10. The automatic intelligent airway cleaning and sputum suction system according to claim 9, characterized in that: A touch controller (11) is fixed at the front end of the control box (1); the sound sensor (7) and the gas pressure sensor (8) are connected to the input end of the touch controller (11) via an A / D converter; and the invasive ventilator (9), the micro servo motor (42), the vacuum pump (52) and the flushing liquid pump are connected to the output end of the touch controller (11) via a D / A converter.

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