Multifunctional visual sputum suction tube for thoracic surgery anesthesia

Abstract

The invention discloses a multifunctional visual sputum suction tube for thoracic surgery anesthesia, and belongs to the field of biomedical engineering. The multifunctional visual sputum suction tube for thoracic surgery anesthesia comprises a tube, a negative pressure adjusting assembly is arranged at one end of the tube, a protection tube is arranged outside the other end of the tube, and rolling wheels are arranged on the two sides of one end of the protection tube. The visual sputum suction tube solves the problems that in the using process of an existing visual sputum suction tube, the sputum suction tube needs to be manually drawn during sputum suction, the sputum suction tube needs to be rotated and twisted during sputum suction tube drawing, and when medical staff draw the sputum suction tube, the sputum suction effect is easily reduced due to the difference and change of the rotating speed and the drawing speed. By pinching the anti-skid pieces on the two sides of the pair of rollers, the anti-skid pieces can adjust the orientation and angle of the pair of rollers, the rollers slide in the sliding grooves through the sliding blocks so that a pipeline can be conveniently and stably rotated when the pipeline is drawn, and the sputum suction effect is improved while the comfort level of a patient is improved.

Description

Technical Field

[0001] The invention relates to the field of biomedical engineering, in particular to a multifunctional visual sputum suction tube for thoracic surgery anesthesia. Background Art

[0002] The sputum suction tube is an important medical device in biomedical engineering. It is soft and has a certain degree of curvature. It can be comfortably and safely inserted into the patient's trachea. It is connected to the negative pressure suction device and uses the negative pressure principle to suck out sputum, secretions or other foreign matter in the respiratory tract. In patients with double-lung ventilation in the chest department, the visual sputum suction tube is used to check the position of the double-lumen tube during surgery. If hypoxemia occurs during surgery, the visual sputum suction tube is used to check whether there is sputum plug blocking the airway. At the same time, continuous positive pressure ventilation can be performed through the sputum suction tube to correct hypoxemia in patients with single-lung ventilation, so as to keep the airway open and prevent obstruction and infection. A Chinese patent with publication number CN221579345U discloses a visualized sputum suction tube, including an imaging component, a sputum suction tube and a negative pressure adjustment component. The imaging component includes an information transmission module, a probe and an imaging guide wire. One end of the imaging guide wire is connected to the probe, and the other end passes through the sputum suction tube and is connected to the information transmission module. The negative pressure adjustment component is connected to the negative pressure end of the sputum suction tube. The image information collected by the probe can be transmitted to other display devices through the information transmission module, greatly increasing the flexibility of the display.

[0003] During use of the visualized suction tube of the above patent, the suction tube needs to be manually pulled out during suction, and the suction tube needs to be rotated and twisted when the suction tube is pulled out. The suction speeds of different medical staff are different, so that the suction tube is not pulled out from the patient's throat at a uniform speed, and it is also difficult to rotate the suction tube while pulling it out at a uniform speed. As a result, when medical staff pull out the suction tube, it is easy to cause discomfort to the patient and reduce the suction effect due to the differences and changes in the rotation speed and the pulling speed. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional visual suction tube for thoracic surgery anesthesia. By pinching the anti-slip sheets on both sides of a pair of rollers, the anti-slip sheets can adjust the direction and angle of the pair of rollers. The rollers slide in the sliding groove through the sliding block, which can facilitate the stable rotation of the pipe when the pipe is extracted, thereby improving the suction effect and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional visual suction tube for thoracic surgical anesthesia, comprising a pipeline, a negative pressure regulating component is arranged at one end of the pipeline, a protective tube is arranged outside the other end of the pipeline, rollers are arranged on both sides of one end of the protective tube, a connecting frame is arranged at the upper end of the two rollers, a motor is arranged on one side of the upper end of the connecting frame, and the output shaft of the motor is fixedly connected to one of the rollers, sliding blocks are welded on both sides of the connecting frame facing the protective tube, a sliding groove is arranged inside the protective tube towards the sliding block, and the sliding block is embedded in the sliding groove and slidably connected with the inside of the sliding groove, the roller can drive the roller to rotate after being driven by the motor, and the rotation of the roller can actively drive the extension and contraction of the pipeline, and the pipeline can move at a uniform speed after being transmitted by the roller, a sleeve is arranged at one end of the negative pressure regulating component, and a docking anti-detachment component is installed at the end of the sleeve away from the negative pressure regulating component.

[0006] Preferably, anti-slip sheets are provided on both sides of the connecting frame, and a switch is provided inside one of the anti-slip sheets, and the switch is electrically connected to the motor. Pinching the anti-slip sheet can drive the roller to adjust the angle, and pinching the anti-slip sheet can facilitate pressing the switch at the same time. The reserved anti-slip sheet can facilitate adjustment of the pipeline, and pressing the switch can facilitate the pipeline to move toward the protective tube, and pressing the switch can also facilitate the pipeline to retract into the protective tube. The pipeline retracts into the protective tube when not in use, and the protective tube can facilitate the storage and protection of the pipeline, avoiding cross infection caused by the pipeline contacting external foreign objects before the pipeline is installed and used.

[0007] Preferably, a limiting ring is arranged around the outside of the protective tube, and limiting plates are extended on both sides of the limiting ring toward one end of the protective tube. The limiting plates can facilitate the limiting ring to slide laterally along the protective tube to adjust its position and adjust the maximum sliding distance of the limiting rod. After the lateral distance of the limiting ring is adjusted, the spacing between the limiting ring and the connecting frame can adapt to the maximum depth of the pipeline. After the pipeline extends out of the protective tube, the limiting rod will move toward the limiting ring, and the limiting ring will directly limit the extension distance of the pipeline by restricting the limiting rod. The lower end of the outer wall of the protective tube is provided with a scale along the protective tube. The scale can facilitate the lateral sliding of the limiting ring, and the limiting rod can be accurately adjusted through the scale. The scale fits the surface of the protective tube, and the scale will assist in the precise position adjustment of the limiting ring.

[0008] Preferably, a sliding rail is provided in the upper end recess of the outer portion of the protective tube, a limiting rod is longitudinally provided inside the sliding rail, and the limiting rod is welded and fixed to the outer wall of the pipe. The sliding rail can facilitate the movement of the limiting rod. When the pipe slides along the protective tube, the limiting rod will slide in the sliding rail, and the sliding rail does not directly contact the outer wall of the limiting rod at the same time. When the limiting rod slides in the sliding rail, the pipe swings back and forth in the protective tube. When the pipe swings in the protective tube, the limiting rod will move in the sliding rail, and the sliding rail will not limit the swing of the limiting rod. The sliding rail inside the protective tube will limit the swing angle of the limiting rod to avoid the large swing distance of the limiting rod and the pipe causing discomfort to the patient.

[0009] Preferably, threaded rods are provided on both sides of the interior of the restriction ring, and the outer wall of the threaded rod is threadedly matched with the penetration position of the restriction ring. The threaded rod can rotate inside the restriction ring and move toward the protective tube. Moving toward the protective tube can fit and fix the position of the restriction ring. After the threaded rod rotates and fixes the restriction ring to the outer wall of the protective tube, the protective tube will stably restrict the restriction rod, and the threaded rods on both sides of the restriction ring will stably restrict the restriction rod. The restriction can prevent the restriction ring from sliding inside the protective tube and causing position displacement after the restriction rod collides with the restriction ring.

[0010] Preferably, a lighting lamp is provided at the middle position of one end of the pipeline facing the first connecting ring, a camera is provided at the upper end of the lighting lamp, the sleeve is sealed and connected to the negative pressure regulating assembly, an information transmission module is provided on the outer wall of the sleeve, and the information transmission module is electrically connected to the camera and the lighting lamp through an imaging guide wire, and lighting is generated after power is supplied, which is convenient for lighting the deep position of the pipeline, and the lighting facilitates the camera to shoot, and the illumination and shooting can improve the effect of sputum suction, so that the sputum can be accurately adsorbed, thereby improving the efficiency of sputum suction.

[0011] Preferably, a second connecting ring is provided at the lower end between the pipeline and the negative pressure regulating assembly, and one side of the upper end of the second connecting ring is rotatably connected to one end of the pipeline, and the other side of the upper end of the second connecting ring is sealed and connected to the negative pressure regulating assembly through a shunt tube, and sputum sucked by the pipeline will be transitioned by the second connecting ring. After the second connecting ring serves as a transition, the suction force will cause the sputum to flow along the pipeline and move toward the second connecting ring. After moving toward the second connecting ring, the sputum will lose the restriction of the pipeline and directly fall on the upper end of the collecting bottle. A collecting bottle is provided at the lower end of the outside of the second connecting ring, and the upper end of the outside of the collecting bottle is threadedly matched with the lower end of the outside of the second connecting ring. After the transition of the second connecting ring, the sputum will fall into the inside of the collecting bottle. Rotation can facilitate the disassembly and temporary replacement of the collecting bottle. The extended position of the lower end of the second connecting ring will cover the threaded matching position between the collecting bottle and the second connecting ring to prevent the sputum from contacting the threaded matching position between the collecting bottle and the second connecting ring.

[0012] Preferably, the docking anti-detachment assembly comprises: a first connecting sleeve and a second connecting sleeve, the first connecting sleeve is sleeved on the outer wall of the sleeve, the second connecting sleeve is sleeved on the outer wall of the patient's trachea, and a docking drive unit is installed on the top of the first connecting sleeve and the second connecting sleeve; The first connecting sleeve and the second connecting sleeve have the same structure. The first connecting sleeve is composed of a fixed base and a limiting buckle ring, and one end of the limiting buckle ring is rotatably connected to one end of the fixed base, and the other end of the limiting buckle ring is fixed to the other end of the fixed base by a bolt, and the centers of the fixed base and the limiting buckle ring are both semicircular arc-shaped; The docking drive unit includes: a first positioning block and a second positioning block, the first positioning block is fixedly connected to the outer wall of the first connecting sleeve, a limiting column is fixedly provided on the top of the first positioning block, the second positioning block is fixedly connected to the outer wall of the second connecting sleeve, one end of the driving docking plate is fixedly installed on the top of the second positioning block through a U-shaped guide, the other end of the driving docking plate is provided with a guide groove, and the guide groove is movably sleeved on the outer wall of the limiting column, the mounting frame is fixedly connected to the outer wall of the first connecting sleeve, and the mounting frame is located between the two groups of the first positioning blocks, the threaded rod is rotatably connected to the mounting frame, and the threaded sleeve is movably sleeved on the The outer wall of the threaded rod, and the threaded sleeve and the threaded rod are connected by threads, one end of the connecting plate is rotatably connected to the driving docking plate, one end of the connecting plate is rotatably connected to the threaded sleeve, an anti-slip gear ring 1 is fixedly arranged on the end of the mounting frame away from the threaded rod, one end of the movable rod movably passes through the mounting frame and extends into the threaded rod, an anti-slip gear ring 2 is fixedly arranged on the other end of the movable rod, and the same meshing teeth are arranged on the side where the anti-slip gear ring 1 and the anti-slip gear ring 2 are close to each other, a limiting rod is arranged on the outer wall of the movable rod, a limiting groove is arranged on the inner wall of the threaded rod, and the limiting rod is movably arranged in the limiting groove.

[0013] Preferably, it also includes, A pressure sensor 1 is installed at the inlet of the pipeline of the sputum suction device and close to the starting end of the pipeline, and is used to accurately measure the pressure of the fluid entering the pipeline; A second pressure sensor is installed at the outlet of the pipe of the sputum suction device and close to the end of the pipe, and is used to accurately measure the pressure at the outlet of the pipe; A flow sensor is installed in the main channel of the pipeline, preferably in the straight section of the pipeline; An alarm device, the alarm device being arranged on the outer wall of the connecting frame; A controller, wherein the controller is arranged on the outer wall of the connecting frame, the controller is electrically connected to the pressure sensor 1, the pressure sensor 2, the flow sensor and the alarm respectively, and the controller controls the alarm to work based on the pressure sensor 1, the pressure sensor 2 and the flow sensor, including: Step 1: The controller calculates the blockage state index of the sputum suction tube when it is working based on the pressure sensor 1, the pressure sensor 2, the flow sensor and formula (1): (one) in, is the blockage index of the suction tube when it is working. The pressure sensor 1 detects the pressure at the inlet end of the pipeline, The pressure sensor 2 detects the pressure at the outlet of the pipeline. is the suction flow detected by the flow sensor, The effective transmission space of the flow volume of the pipeline), The flow rate in the pipeline is detected by the flow sensor. is the length of the pipeline, is the diameter of the pipe, The suction time control module detects the duration of the blockage of the pipeline. The suction time control module detects the maximum blockage time of the pipeline. Take 3.14, is the preset congestion time attenuation factor, is a constant, take 2.14, is the fluid influence factor, is the periodic disturbance factor, is the logarithmic pressure factor, is the natural logarithm; Step 2: The controller compares the blockage state index of the sputum suction tube when it is working with a preset blockage state index. If the blockage state index of the sputum suction tube when it is working is greater than the preset blockage state index, the alarm sounds an alarm.

[0014] Preferably, it also includes a sputum suction system, the sputum suction system comprising: Camera module: collects image information, can take pictures of the environment around the suction tube, obtain the location of sputum and the internal condition of the throat, and provide intuitive visual information to medical staff to help them accurately determine the location of suction; Lighting module: provides lighting, and emits sufficient light to illuminate the surrounding area when the suction tube enters the dark environment of the patient's airway; Imaging guidewire module: responsible for transmitting the image signal collected by the camera and possible control signals to the information transmission module; Image storage module: data storage, responsible for receiving and saving processed image data transmitted from the information transmission module; Depth detection module: measures the distance and can measure the depth of the suction tube entering the airway to ensure that the insertion depth of the suction tube is within a safe range; Data encryption module: encrypts data and performs encryption processing on the image data transmitted between the imaging guide wire module and the information transmission module; Suction time control module: set the maximum suction time, and time and monitor the actual suction time.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the pipeline of the present invention is inserted into the patient's endotracheal tube, first, the limiting ring will limit the maximum sliding distance of the limiting rod in the sliding rail, preventing medical staff from inserting the pipeline to a deeper distance. Secondly, by pressing the anti-slip sheet, the direction of the current inside the motor is adjusted, and the rotation direction of the motor output shaft is adjusted. When the pipeline is delivered to the throat, the roller rotates counterclockwise, and the pipeline is delivered at a uniform and stable speed. The counterclockwise rotation of the roller can pull out the pipeline for suctioning phlegm in the throat at a uniform speed. Finally, when the roller is pulled, the pinched pair of anti-slip sheets can drive the roller to rotate, so that the pair of rollers rotate back and forth with the protective tube as the center, and a uniform and reciprocating movement can be achieved. The user only needs to pinch the anti-slip sheet back and forth and make the sliding block slide along the sliding groove, which is convenient for users in biomedical engineering to operate and convenient for suctioning phlegm.

[0016] 2. The sliding rail at the upper end of the inner part of the protection tube of the present invention can limit the limiting rod on the surface of the pipe. When the pipe is extended into the throat of the patient, the limiting rod will slide in the sliding rail, and the sliding rail will limit the pipe through the limiting rod. On the other hand, the limiting ring can slide laterally along the protection tube to adjust the spacing between the limiting ring and the connecting frame. The adjustment of the spacing can adjust the lateral sliding distance of the limiting rod. After the limiting ring slides along the protection tube, the maximum extension distance of the limiting rod and the pipe is limited. Before the pipe is extended into the patient's body, the position of the limiting ring is adjusted according to the suction position of different patients and the throat length of different patients, so as to avoid the pipe from extending into a deeper position in the patient's body and to avoid medical accidents caused by disassembly into a deeper position.

[0017] 3. The upper end of the shunt pipe of the present invention is extended with a connecting pipe. When the negative pressure regulating component adjusts the suction, when the suction causes phlegm blockage inside the pipe, the user can directly observe the blockage in the pipe, and the thumb pressed on the upper end of the negative pressure regulating component can be directly lifted up and the filling block can be discharged from the connecting pipe, so that the suction loses the adsorption of the inside of the pipe, and the suction can be actively discharged from the connecting pipe position, and a position for instantaneous active gas discharge is provided, and the suction is instantly discharged when blocked, so as to avoid the suction continuously sucking the blockage inside the pipe, causing discomfort to the patient and medical accidents. After the filling block is taken out of the connecting pipe, it can also be refilled into the inside to restore the pipe to adsorb phlegm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall external structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A area; Figure 3 An exploded diagram of the position relationship of the sliding block of the present invention; Figure 4 An exploded view of the position relationship of the sliding groove of the present invention; Figure 5 It is a schematic diagram of the pipeline extension of the present invention; Figure 6 A cross-sectional view of the internal structure of the restriction ring of the present invention; Figure 7 It is a cross-sectional view of the internal structure of the protection tube of the present invention; Figure 8 A schematic diagram of the internal suction trajectory of a pipeline of the present invention; Fig. 9 This is a schematic diagram of the installation position of the docking anti-detachment component in the present invention; Fig.10 This is a schematic diagram of the structure of the docking drive unit in the present invention; Fig.11 It is a schematic diagram of the cooperation between the threaded rod and the movable rod in the present invention; Fig.12 This is a schematic diagram of the structure of the first connecting sleeve in the present invention; Fig.13 It is a schematic diagram of the sputum suction system of the present invention.

[0019] In the figure: 1. protective tube; 2. first connecting ring; 3. pipeline; 4. sliding rail; 5. limiting ring; 6. limiting plate; 7. threaded rod; 8. limiting rod; 9. connecting frame; 10. anti-slip plate; 11. switch; 12. roller; 13. motor; 14. sleeve; 15. collecting bottle; 16. second connecting ring; 17. connecting tube; 18. shunt tube; 19. negative pressure regulating assembly; 20. filling block; 21. information transmission module; 22. sliding block; 23. scale; 24. sliding groove; 25. suction port; 26. imaging guide wire; 27. camera ; 28. Illuminating lamp; 29. ​​Docking anti-slip assembly; 30. Patient trachea; 31. First connecting sleeve; 32. Second connecting sleeve; 33. Docking drive unit; 34. First positioning block; 35. Second positioning block; 36. Limiting column; 37. U-shaped guide; 38. Driving docking plate; 39. Guide groove; 40. Connecting plate; 41. Threaded sleeve; 42. Threaded rod; 43. Mounting bracket; 44. Anti-slip gear ring one; 45. Anti-slip gear ring two; 46. Movable rod; 47. Limiting rod; 48. Limiting groove; 49. Fixed base; 50. Limiting buckle. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments. Example 1

[0021] like Figure 1 and Figure 2 As shown, a multifunctional visual sputum suction tube for thoracic surgery anesthesia in this embodiment includes a pipeline 3, one end of the pipeline 3 is provided with a negative pressure regulating component 19, one end of the negative pressure regulating component 19 is provided with a sleeve 14, and the sleeve 14 is sealed and connected to the negative pressure regulating component 19. After the sleeve 14 is sealed and connected to the negative pressure machine, the pipeline 3 can be adsorbed toward the position, and the rotation of the negative pressure regulating component 19 can adjust the suction force. Reference announcement number CN221579345U discloses a visual sputum suction tube. In this application, the suction force is adjusted by the negative pressure regulating component. The adjustment by the pipeline 3 is a prior art, so it is not described too much in this application. When the user is suctioning, one of his hands holds the position of the negative pressure regulating component 19 to facilitate the adjustment of the suction force. In order to facilitate the transmission of pipeline 3, Figure 3 , Figure 4 and Figure 5 As shown, a protective tube 1 is provided outside the other end of the pipe 3, and a first connecting ring 2 is provided at the other end of the protective tube 1. When the pipe 3 is inserted, the protective tube 1 needs to be sealed and connected with the endotracheal tube through the first connecting ring 2 to prevent foreign matter from entering the throat along with the pipe 3, and the protective tube 1 can make the pipe 3 straight, and prevent the bending of the pipe 3 from reducing the suction effect; In addition, rollers 12 are provided on both sides of one end of the protection tube 1. The two rollers 12 can complete the clamping of the pipe 3. The clamping of the pipe 3 can facilitate the transmission of the pipe 3 by the rollers 12. The rollers 12 can also twist the pipe 3 by rotating with the protection tube 1 as the center, and adjust the pipe 3 toward the sputum suction port 25 at one end of the first connecting ring 2: In order to enable the rollers 12 to stably adjust the pipe 3, a connecting frame 9 is provided at the upper ends of the two rollers 12, and the interior of the connecting frame 9 is rotatably connected to the center of the roller 12. A motor 13 is provided on one side of the upper end of the connecting frame 9, and the output shaft of the motor 13 can pass through the connecting frame 9 and drive one of the rollers 12 to rotate, so that the rollers 12 rotate and drive the pipe 3 to be transmitted at a uniform speed; In order to prevent the connection frame 9 from falling off, anti-skid sheets 10 are provided on both sides of the connection frame 9, and a switch 11 is provided inside one of the anti-skid sheets 10, and the switch 11 is electrically connected to the motor 13. Pressing the switch 11 can adjust the direction of the current inside the motor 13. Changing the direction of the current will also change the direction of the magnetic field generated by the armature winding, so that the output shaft of the motor 13 rotates in the opposite direction. Reference is made to a motor forward and reverse switching circuit and a motor control system disclosed in publication number CN118944529A. In this application, the motor forward and reverse switching is recorded in detail, so the forward and reverse of the motor is not described too much in this application. Sliding blocks 22 are provided on both sides of the connection frame 9 facing the protection tube 1, and the sliding blocks 22 are welded and fixed to the connection frame 9. A sliding groove 24 is provided inside the protection tube 1 in a recessed manner facing the sliding block 22, and the sliding block 22 is embedded in the sliding groove 24 and is slidably connected to the inside of the sliding groove 24. Embedding in the sliding groove 24 can fix the roller 12 with the protection tube 1, thereby preventing the position deviation of the roller 12 from affecting the stability of the transmission of the pipeline 3. In order to pre-limit the maximum length of the inserted pipe 3, as Figure 5 and Figure 6 As shown, a limiting ring 5 is disposed around the outside of the protection tube 1, and limiting sheets 6 are extended on both sides of the limiting ring 5 toward one end of the protection tube 1. The protruding limiting sheets 6 facilitate the lateral movement of the limiting ring 5 and the adjustment of the spacing between the limiting ring 5 and the connecting frame 9, and the spacing between the limiting ring 5 and the connecting frame 9 corresponds to the extendable distance of the pipeline 3; The upper end of the protection tube 1 is recessed with a sliding rail 4, and a limiting rod 8 is longitudinally arranged inside the sliding rail 4. The limiting rod 8 is welded and fixed to the outer wall of the pipe 3. The pipe 3 slides in the protection tube 1 as the roller 12 rotates. When sliding, the limiting rod 8 moves in the sliding rail 4 until the limiting rod 8 fits the limiting ring 5 and limits the maximum extension distance of the pipe 3. In order to facilitate the fixing of the restriction ring 5 so that the restriction ring 5 is fixed outside the protection tube 1, threaded rods 7 are provided on both sides of the interior of the restriction ring 5, and the outer wall of the threaded rod 7 is threadedly matched with the penetration position of the restriction ring 5. The threaded rod 7 can be rotated to move the threaded rod 7 toward the protection tube 1. The threaded rod 7 fits the outer wall of the protection tube 1 to fix the restriction ring 5 after the position is adjusted, so as to facilitate the restriction of the restriction rod 8. In addition, in order to facilitate the adjustment of the position of the limiting ring 5, a scale 23 is provided along the lower end of the outer wall of the protection tube 1. When the limiting ring 5 is slid laterally, the limiting ring 5 can be aligned with the scale 23 to adjust the lateral position; In order to directly observe the suction position, it is also convenient for the user to directly understand the position of the pipeline 3. Figure 7As shown, a lighting lamp 28 is provided at the middle position of one end of the pipe 3 toward the first connecting ring 2, and a camera 27 is provided at the upper end of the lighting lamp 28. In order to transmit the picture of the shooting position of the camera 27, an information transmission module 21 is provided on the outer wall of the sleeve 14, and the information transmission module 21 is electrically connected to the camera 27 and the lighting lamp 28 through an imaging guide wire 26. Through the wired transmission of the imaging guide wire 26 and the wireless transmission of the information transmission module 21, it is convenient for the user to directly view the picture on the display screen, and the shooting of the camera 27 can be directly observed, and the positioning of the left and right bronchial cuffs of the double-lumen endotracheal tube can be assisted, and the intraoperative hypoxemia examination and determination can be carried out; In order to facilitate the collection and cleaning of the sucked sputum, Figure 8 As shown, a second connecting ring 16 is provided at the lower end between the pipeline 3 and the negative pressure regulating component 19, and one side of the upper end of the second connecting ring 16 is rotatably connected to one end of the pipeline 3, and the rotatable connection facilitates twisting the pipeline 3 to rotate. At the same time, the other side of the upper end of the second connecting ring 16 is sealedly connected to the negative pressure regulating component 19 through a shunt tube 18. Through the sealed connection of the shunt tube 18, after the negative pressure machine at one end of the sleeve 14 is started, the pipeline 3 can be extracted through the shunt tube 18 to complete sputum suction. At the same time, continuous positive pressure ventilation can be performed through the shunt tube 18 to correct hypoxemia in patients with single-lung ventilation. During thoracic surgery anesthesia, sputum can be suctioned, the position of the laryngeal mask can be checked, and continuous positive pressure ventilation can be assisted. Continuous negative pressure accelerates the collapse of the surgical side lung to adapt to different use environments and use requirements; The lower end of the second connecting ring 16 is provided with a collecting bottle 15, and the upper end of the collecting bottle 15 is threadedly matched with the lower end of the second connecting ring 16. The collecting bottle 15 can be installed to the lower end of the second connecting ring 16 by rotating the collecting bottle 15. The suction force generated by the shunt tube 18 will also suck the sputum into the collecting bottle 15, and will not be transmitted to the shunt tube 18 and the negative pressure machine connected to one end of the shunt tube 18. The pipe 3 is made of silicone, and the surface of the pipe 3 should be smooth without sharp corners, easy to disinfect and clean, and reduce irritation to the patient; Example 2

[0022] In order to quickly release the pressure when the pipe 3 is blocked due to suction, a connecting tube 17 is extended from the upper end of the shunt tube 18, and a filling block 20 is sealed at one end of the connecting tube 17. After the thumb is pressed on the upper end of the negative pressure regulating component 19, the upper end of the thumb is located at the lower end of the outside of the filling block 20. The filling block 20 can be taken out of the connecting tube 17 by prying the thumb, so that the pressure can be directly discharged from the position of the connecting tube 17. Example 3

[0023] like Figure 9-12As shown, the docking anti-detachment assembly 29 includes: a first connecting sleeve 31 and a second connecting sleeve 32, the first connecting sleeve 31 is sleeved on the outer wall of the sleeve 14, the second connecting sleeve 32 is sleeved on the outer wall of the patient's trachea 30, and a docking drive unit 33 is installed on the top of the first connecting sleeve 31 and the second connecting sleeve 32;

[0024] The first connecting sleeve 31 and the second connecting sleeve 32 have the same structure. The first connecting sleeve 31 is composed of a fixed base 49 and a limiting buckle 50, and one end of the limiting buckle 50 is rotatably connected to one end of the fixed base 49, and the other end of the limiting buckle 50 is fixed to the other end of the fixed base 49 by a bolt, and the centers of the fixed base 49 and the limiting buckle 50 are both semicircular arcs; The docking drive unit 33 includes: a first positioning block 34 and a second positioning block 35, the first positioning block 34 is fixedly connected to the outer wall of the first connecting sleeve 31, a limiting column 36 is fixedly provided on the top of the first positioning block 34, the second positioning block 35 is fixedly connected to the outer wall of the second connecting sleeve 32, one end of a driving docking plate 38 is fixedly installed on the top of the second positioning block 35 through a U-shaped guide member 37, the other end of the driving docking plate 38 is provided with a guide groove 39, and the guide groove 39 is movably sleeved on the outer wall of the limiting column 36, a mounting frame 43 is fixedly connected to the outer wall of the first connecting sleeve 31, and the mounting frame 43 is located between the two groups of the first positioning blocks 34, a threaded rod 42 is rotatably connected to the mounting frame 43, and a threaded sleeve 41 is movably sleeved on the The outer wall of the threaded rod 42, and the threaded sleeve 41 is connected to the threaded rod 42 by threads, one end of the connecting plate 40 is rotatably connected to the driving docking plate 38, one end of the connecting plate 40 is rotatably connected to the threaded sleeve 41, an anti-slipping toothed ring 44 is fixedly arranged on the mounting frame 43 at one end away from the threaded rod 42, one end of a movable rod 46 movably passes through the mounting frame 43 and extends into the threaded rod 42, an anti-slipping toothed ring 2 45 is fixedly arranged on the other end of the movable rod 46, and the anti-slipping toothed ring 1 44 and the anti-slipping toothed ring 2 45 are both provided with the same meshing teeth on the side close to each other, a limiting rod 47 is provided on the outer wall of the movable rod 46, a limiting groove 48 is provided on the inner wall of the threaded rod 42, and the limiting rod 47 is movably arranged in the limiting groove 48.

[0025] The working principle and beneficial effects of the above-mentioned embodiment are as follows: in order to prevent the suction tube from falling off the patient's trachea 30 during suction, when using the docking anti-detachment assembly 29, after the first connecting sleeve 31 and the second connecting sleeve 32 are opened synchronously, the sleeve 14 and the patient's trachea 30 are placed on the corresponding fixed base 49 respectively, and the limiting buckle 50 is buckled and fixed by bolts, and the movable rod 46 with the anti-detachment toothed ring 45 is pulled out of the threaded rod 42 for a distance, so that the anti-detachment toothed ring 1 44 is separated from the anti-detachment toothed ring 2 45, and the threaded rod 42 is rotated to make the threaded sleeve 41 move along the outer wall of the threaded rod 42, so that The two groups of docking plates 38 are driven to move along the movable rod 46 by the two groups of connecting plates 40. At this time, the second connecting sleeve 32 drives the patient's trachea 30 to move toward the direction close to the first connecting sleeve 31 until the patient's trachea 30 is inserted into the sleeve 14. The threaded rod 42 stops rotating, and the movable rod 46 with the anti-slip gear ring 45 is pushed into the threaded rod 42 to make the anti-slip gear ring 1 44 and the anti-slip gear ring 2 45 mesh, thereby preventing the threaded rod 42 from spontaneously moving and playing a locking role on the entire docking anti-slip assembly 29 to avoid the patient's trachea 30 from falling off due to accidental pulling. Example 4

[0026] A pressure sensor 1 is installed at the entrance of the pipe 3 of the sputum suction device and close to the starting end of the pipe 3, and is used to accurately measure the pressure of the fluid entering the pipe 3; The second pressure sensor is installed at the outlet of the pipe 3 of the sputum suction device and close to the end of the pipe 3, and is used to accurately measure the pressure at the outlet of the pipe 3; The flow sensor is installed in the main channel of the pipeline 3, preferably in the straight section of the pipeline 3 (avoid elbows and valves to avoid measurement errors). The flow sensor should be installed in a place where the fluid flow rate is relatively stable to avoid overly complex flow fields and ensure accurate measurement.

[0027] An alarm device, the alarm device is arranged on the outer wall of the connecting frame 9; A controller, which is arranged on the outer wall of the connecting frame 9, and is electrically connected to the pressure sensor 1, the pressure sensor 2, the flow sensor and the alarm respectively. The controller controls the alarm to work based on the pressure sensor 1, the pressure sensor 2 and the flow sensor, including: Step 1: The controller calculates the blockage state index of the sputum suction tube when it is working based on the pressure sensor 1, the pressure sensor 2, the flow sensor and formula (1): (one) in, is the blockage index of the suction tube when it is working. The pressure sensor 1 detects the pressure at the inlet of the pipeline 3 (i.e., the negative pressure value at the inlet of the pipeline), The pressure sensor 2 detects the pressure at the outlet of the pipeline 3 (i.e., the negative pressure value at the outlet of the pipeline). is the suction flow rate detected by the flow sensor (indicating the gas flow rate through pipeline 3; the smaller the flow rate, the more serious the blockage degree), The flow volume of the pipeline 3 (indicating the effective transmission space of the pipeline 3), The flow rate in the pipeline 3 is detected by the flow sensor. is the length of the pipeline 3, is the diameter of the pipe 3, The suction time control module detects the blockage duration of the pipeline 3. The suction time control module detects the maximum blockage time of the pipeline 3 (indicates that after the blockage begins, the standard value of the maximum tolerance time is reached. If the time threshold is exceeded, the system will issue an alarm). Take 3.14, is the preset congestion time attenuation coefficient, is a constant, take 2.14, is the fluid influence factor (indicating the influence of the liquid flow in the pipeline on the blockage state. The type and viscosity of the fluid will affect the suction flow and thus the degree of blockage), is the periodic disturbance factor (used to simulate the impact of periodic changes. The suction equipment may have periodic fluctuations during operation. For example, the vibration of the equipment or the pressure fluctuation of the external environment will affect the degree of blockage). is the logarithmic pressure factor (indicating the effect of the pressure difference at both ends of the pipeline on the blockage. This factor takes into account the complex pressure effects on the pipeline during the suction process, especially under uneven pressure, the blockage state may become more serious), is the natural logarithm; Step 2: The controller compares the blockage state index of the sputum suction tube when it is working with a preset blockage state index. If the blockage state index of the sputum suction tube when it is working is greater than the preset blockage state index, the alarm sounds an alarm.

[0028] Working principle and beneficial effects of the above embodiment: During the sputum suction process, the pipe 3 may be blocked due to various reasons. For example, factors such as excessive viscosity of sputum, excessive flow rate, and excessive length of the pipe may weaken the suction force in the pipe, thereby affecting the sputum suction effect and even causing discomfort to the patient.

[0029] Therefore, through the blockage index formula, the system can automatically and in real time monitor the blockage degree of the pipeline, and automatically adjust the suction force according to the actual blockage situation. The various variables in the formula, such as pressure difference, flow, temperature, pipeline inner diameter, vibration, fluid viscosity, etc., are all monitored in real time by sensors, and a blockage index X is calculated. The higher this index is, the more blocked the pipeline is, and the greater the suction force is required to effectively suction sputum.

[0030] The system can monitor the pressure difference in the pipe in real time by installing pressure sensors at the inlet and outlet of the suction pipe. When the pressure difference is too large, it means that the pipe may be partially blocked and the fluid flow is blocked. The system will calculate a "blockage status index" through a formula.

[0031] Flow sensors can help determine if the flow rate is slowing down, further verifying whether the pipe is blocked. If the flow rate decreases and the pressure difference increases, the possibility of blockage will also increase.

[0032] Based on the real-time calculation of the blockage status index, the suction device's negative pressure regulation system automatically adjusts the suction force. If the blockage is mild, the suction force will be moderate; if the blockage is severe, the suction force will be increased, ensuring that the suction process is efficient and does not cause discomfort to the patient.

[0033] in, is the time decay factor of the blockage, Is an attenuation coefficient that represents the natural sedimentation and hardening process of the clogging material over time. The longer the time, the more tightly the clogging material may adhere to the inner wall of the pipe, thereby increasing the resistance.

[0034] The fluid influence factor indicates the effect of the flow of liquid in the pipeline on the blockage state. The type and viscosity of the fluid will affect the suction flow rate, thereby affecting the degree of blockage.

[0035] It reflects the concentration of the fluid in the pipeline, which may be related to the concentration, viscosity, and properties of the clogging substance, affecting the degree of clogging.

[0036] It is a periodic disturbance factor, which is used to simulate the influence of periodic changes (such as the periodic fluctuations of the suction equipment during operation). For example, the vibration of the equipment or the pressure fluctuation of the external environment will affect the degree of blockage, especially for some soft or elastic blocking materials.

[0037] It is a periodic change item, which reflects the vibration or periodic changes of the equipment and the external environment. This factor is used to simulate the periodic changes that may occur over time.

[0038] is a logarithmic pressure factor, which indicates the effect of the pressure difference at both ends of the pipeline on the blockage. This factor takes into account the complex pressure effects on the pipeline during the suction process, especially under uneven pressure, the blockage state may become more serious.

[0039] The natural logarithm of the pressure ratio emphasizes the nonlinear relationship between the different pressures. Larger pressure differences can lead to worse clogging, especially when the inlet pressure is too high and the outlet pressure is low.

[0040] In summary, This means that as the blockage time increases, the blockage material may become more difficult to remove due to sedimentation or hardening, thus increasing the resistance and causing the suction force to change non-linearly. This factor will increase the blockage index over time.

[0041] Different fluids affect flow and pressure, and thus the degree of clogging. Fluids with high viscosity are more likely to cause clogging, especially at lower flow rates.

[0042] It means that if there is periodic vibration or external factors (such as changes in ambient pressure) during the operation of the suction equipment, this will affect the blockage state, especially when the equipment operation is unstable.

[0043] The logarithm of the pressure difference reflects the nonlinear pressure effect on the blockage state. For example, some pipes may be sensitive to large pressure differences, while other pipes may not respond as strongly to pressure changes.

[0044] If the blockage index exceeds the set threshold (X greater than 0.8), the system will automatically sound an alarm. Medical staff can understand the blockage of the pipeline in time to avoid delaying treatment due to negligence.

[0045] For example, when the sputum is particularly viscous, the blockage status index calculated by the system will rise rapidly, indicating that stronger suction is needed, and even triggering an automatic cleaning mechanism (such as short-term high-suction operation) to avoid more serious blockage.

[0046] To further understand the content of the present invention, please refer to Fig. 9 , this embodiment provides the following technical solutions: A multifunctional visual sputum suction tube for thoracic surgery anesthesia: it also includes a sputum suction system, which includes a camera module, a lighting module, an imaging guide wire module, an image storage module, a depth detection module, a data encryption module and a sputum suction time control module, wherein: Camera module: collects image information, can take pictures of the environment around the suction tube, obtain the location of sputum and the internal condition of the throat, provide intuitive visual information for medical staff, help them accurately determine the suction location, avoid damage to the patient's airway caused by misoperation, and also help evaluate the lesions in the airway; Lighting module: Provides lighting. When the suction tube enters the patient's airway, it emits enough light to illuminate the surrounding area, ensuring that the camera can capture images clearly. This prevents the camera from being unable to obtain high-quality images due to the dark light inside the airway and the lack of lighting, which affects the observation and judgment of medical staff. Imaging guidewire module: responsible for transmitting the image signal collected by the camera and possible control signals to the information transmission module 21, serving as a physical channel for image and signal transmission, ensuring that data can be transmitted stably and quickly between the camera and the information transmission module 21; Image storage module: data storage, responsible for receiving and saving processed image data transmitted from the information transmission module 21, so that medical staff can review the images during the suction process when necessary, and can be used for medical records, condition analysis and comparison, and medical teaching. In the subsequent assessment of the patient's condition, the airway condition during the previous suction can be checked; Depth detection module: measures the distance and the depth of the suction tube entering the airway to ensure that the insertion depth of the suction tube is within a safe range to avoid damage to the patient's airway due to excessive insertion or ineffective suction due to excessive insertion. Data encryption module: encrypts data, encrypts the image data transmitted between the imaging guidewire module and the information transmission module 21, protects the patient's privacy information, and prevents sensitive data such as the patient's airway image from being stolen or leaked during the data transmission process; Suction time control module: Set the maximum suction time, and time and monitor the actual suction time to avoid long-term suction operations that may cause adverse effects on the patient's airway. This module can ensure that the suction operation is completed within a reasonable time range and improve the safety of the operation.

[0047] Working principle: When using the device and checking the position of the double-lumen tube during surgery, checking whether there is sputum plug blocking the airway, correcting hypoxemia in patients with single-lung ventilation with continuous positive pressure ventilation, and suctioning the patient's throat, according to the suction position of different patients and the depth required by the device, the limiting ring 5 slides laterally on the reference scale 23 outside the protection tube 1, and the spacing between the limiting ring 5 and the connecting frame 9 is adapted to different embedding lengths. The first connecting ring 2 at one end of the protection tube 1 is required to be connected to the patient's endotracheal tube, the sleeve 14 is connected to the negative pressure machine, and the collection bottle 15 is rotatably installed on the outside of the second connecting ring 16. At the lower end, the built-in power supply of the information transmission module 21 supplies power to the camera 27 and the illuminator 28, supplies power and starts the camera 27 and the illuminator 28, and the signal generated by the illuminator 28 is transmitted to the information transmission module 21 through the imaging guide wire 26. The display device receives the wireless signal of the information transmission module 21 for imaging, directly observes the irradiation position, and assists in the positioning of the left and right bronchial cuffs of the double-lumen endotracheal tube, as well as the intraoperative hypoxemia examination and judgment. After the visual inspection is completed, the switch 11 is pressed after the connection to start the motor 13, and the output shaft of the motor 13 drives the roller 12 to rotate counterclockwise. The rotation of the roller 12 will drive the pipe 3 to extend from the protection tube 1 at a uniform speed and reach the suction position at a uniform and slow speed. The limiting rod 8 will slide horizontally in the sliding rail 4 until it fits the limiting ring 5, and then the roller 12 will stop transmitting the pipe 3. The suction force inside the pipe 3 is adjusted by the negative pressure regulating component 19. When the suction force is generated, the switch 11 is pressed to start the motor 13. The output shaft of the motor 13 drives the roller 12 to rotate clockwise. The rotation of the roller 12 will cause the pipe 3 to be extracted from the patient's throat. While extracting, the user's index finger and thumb respectively pinch the two anti-slip sheets 10, pinch the anti-slip sheets 10 and The protective tube 1 rotates back and forth about the center of a circle. When the connecting frame 9 and the roller 12 rotate, the sliding block 22 at the front end of the connecting frame 9 will slide in the sliding groove 24, so that the pipe 3 can be extracted at a uniform speed and rotate slightly back and forth. The extracted sputum will flow along the pipe 3 into the collection bottle 15. When the user visually sees that the sputum inside the pipe 3 is blocked, the user holds the thumb at the upper end of the negative pressure regulating component 19 and lifts it up. The thumb contacts the filling block 20 to remove the filling block 20 from the connecting pipe 17, quickly releasing the suction pressure. When the equipment needs to stay in the patient's chest cavity, there is no need to press the switch 11 to start the motor 13.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A multifunctional visual sputum suction tube for thoracic surgery anesthesia, comprising a pipeline (3), one end of which is provided with a negative pressure regulating component (19), characterized in that: A protective tube (1) is arranged outside the other end of the pipeline (3), rollers (12) are arranged on both sides of one end of the protective tube (1), a connecting frame (9) is arranged on the upper ends of the two rollers (12), a motor (13) is arranged on one side of the upper end of the connecting frame (9), and the output shaft of the motor (13) is fixedly connected to one of the rollers (12), sliding blocks (22) are welded on both sides of the connecting frame (9) facing the protective tube (1), a sliding groove (24) is arranged inside the protective tube (1) and is recessed towards the sliding block (22), and the sliding block (22) is embedded in the sliding groove (24) and is slidably connected to the inside of the sliding groove (24), a sleeve (14) is arranged at one end of the negative pressure regulating component (19), and a docking anti-detachment component (29) is installed at the end of the sleeve (14) away from the negative pressure regulating component (19).

2. A multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: Anti-slip sheets (10) are provided on both sides of the connecting frame (9), a switch (11) is provided inside one of the anti-slip sheets (10), and the switch (11) is electrically connected to the motor (13).

3. A multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: A limiting ring (5) is disposed around the outside of the protection tube (1), and limiting plates (6) are provided extending from both sides of the limiting ring (5) toward one end of the protection tube (1), and a scale (23) is provided at the lower end of the outer wall of the protection tube (1) along the protection tube (1).

4. A multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 3, characterized in that: A sliding rail (4) is provided in a recessed manner at the upper end of the exterior of the protection tube (1), a limiting rod (8) is longitudinally provided inside the sliding rail (4), and the limiting rod (8) is fixedly welded to the outer wall of the pipeline (3).

5. A multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 4, characterized in that: Threaded rods (7) are provided through both sides of the interior of the limiting ring (5), and the outer wall of the threaded rod (7) is threadably matched with the penetration position of the limiting ring (5).

6. The multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: An illuminating lamp (28) is provided at a middle position of one end of the pipe (3) facing the first connecting ring (2), a camera (27) is provided at the upper end of the illuminating lamp (28), the sleeve (14) is sealedly connected to the negative pressure regulating assembly (19), an information transmission module (21) is provided on the outer wall of the sleeve (14), and the information transmission module (21) is electrically connected to the camera (27) and the illuminating lamp (28) via an imaging guide wire (26).

7. The multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: A second connecting ring (16) is provided at the lower end between the pipeline (3) and the negative pressure regulating component (19), and one side of the upper end of the second connecting ring (16) is rotatably connected to one end of the pipeline (3), and the other side of the upper end of the second connecting ring (16) is sealedly connected to the negative pressure regulating component (19) via a shunt tube (18), and a collecting bottle (15) is provided at the lower end of the outside of the second connecting ring (16), and the upper end of the outside of the collecting bottle (15) is threadedly matched with the lower end of the outside of the second connecting ring (16).

8. The multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: The docking anti-detachment assembly (29) comprises: a first connecting sleeve (31) and a second connecting sleeve (32), the first connecting sleeve (31) being sleeved on the outer wall of the sleeve (14), the second connecting sleeve (32) being sleeved on the outer wall of the patient's trachea (30), and a docking drive unit (33) being installed on the top of the first connecting sleeve (31) and the second connecting sleeve (32); The first connecting sleeve (31) and the second connecting sleeve (32) have the same structure. The first connecting sleeve (31) is composed of a fixed base (49) and a limiting buckle (50). One end of the limiting buckle (50) is rotatably connected to one end of the fixed base (49). The other end of the limiting buckle (50) is fixed to the other end of the fixed base (49) by a bolt. The centers of the fixed base (49) and the limiting buckle (50) are both semicircular arc-shaped. The docking drive unit (33) comprises: a first positioning block (34) and a second positioning block (35); the first positioning block (34) is fixedly connected to the outer wall of the first connecting sleeve (31); a limiting column (36) is fixedly provided on the top of the first positioning block (34); the second positioning block (35) is fixedly connected to the outer wall of the second connecting sleeve (32); one end of a driving docking plate (38) is fixedly mounted on the top of the second positioning block (35) via a U-shaped guide member (37); a guide groove (39) is provided on the other end of the driving docking plate (38); and the guide groove (39) is movably sleeved on the outer wall of the limiting column (36); a mounting frame (43) is fixedly connected to the outer wall of the first connecting sleeve (31); and the mounting frame (43) is located between two groups of the first positioning blocks (34); a threaded rod (42) is rotatably connected to the mounting frame (43); and a threaded sleeve (41) is movably sleeved on the mounting frame (43). The threaded rod (42) is connected to the outer wall of the threaded rod (42), and the threaded sleeve (41) and the threaded rod (42) are connected by threads, one end of the connecting plate (40) is rotatably connected to the driving docking plate (38), and one end of the connecting plate (40) is rotatably connected to the threaded sleeve (41), an anti-slipping toothed ring (44) is fixedly arranged at one end of the mounting frame (43) away from the threaded rod (42), one end of a movable rod (46) movably penetrates the mounting frame (43) and extends into the threaded rod (42), an anti-slipping toothed ring (45) is fixedly arranged at the other end of the movable rod (46), and the anti-slipping toothed ring (44) and the anti-slipping toothed ring (45) are provided with the same meshing teeth on the side close to each other, a limiting rod (47) is provided on the outer wall of the movable rod (46), and a limiting groove (48) is provided on the inner wall of the threaded rod (42), and the limiting rod (47) is movably arranged in the limiting groove (48).

9. The multifunctional visual sputum suction tube for thoracic surgery anesthesia according to claim 1, characterized in that: Also includes, A pressure sensor 1, installed at the entrance of the pipe (3) of the sputum suction device and close to the starting end of the pipe (3), and used for accurately measuring the pressure of the fluid entering the pipe (3); A second pressure sensor is installed at the outlet of the pipe (3) of the sputum suction device and close to the end of the pipe (3), and is used to accurately measure the pressure at the outlet of the pipe (3); A flow sensor installed in the main channel of the pipeline (3), preferably located in the straight pipe section of the pipeline (3); an alarm, the alarm being arranged on an outer wall of the connecting frame (9); A controller, the controller being arranged on the outer wall of the connecting frame (9), the controller being electrically connected to the pressure sensor 1, the pressure sensor 2, the flow sensor and the alarm respectively, the controller controlling the alarm to operate based on the pressure sensor 1, the pressure sensor 2 and the flow sensor, comprising: Step 1: The controller calculates the blockage state index of the sputum suction tube when it is working based on the pressure sensor 1, the pressure sensor 2, the flow sensor and formula (1): (one) in, is the blockage index of the suction tube when it is working. The pressure sensor 1 detects the pressure at the inlet end of the pipeline (3), The pressure sensor 2 detects the pressure at the outlet of the pipeline (3). is the suction flow detected by the flow sensor, The flow volume of the pipeline (3), The flow rate in the pipeline (3) is detected by the flow sensor. is the length of the pipeline (3), is the diameter of the pipe (3), The suction time control module detects the duration of the blockage of the pipeline (3). The suction time control module detects the maximum blockage time of the pipeline (3). Take 3.14, is the preset congestion time attenuation factor, is a constant, take 2.14, is the fluid influence factor, is the periodic disturbance factor, is the logarithmic pressure factor, is the natural logarithm; Step 2: The controller compares the blockage state index of the sputum suction tube when it is working with a preset blockage state index. If the blockage state index of the sputum suction tube when it is working is greater than the preset blockage state index, the alarm sounds an alarm.

10. The multifunctional visual sputum suction tube for thoracic surgery anesthesia according to any one of claims 1 to 9, characterized in that: Also included is a sputum suction system, the sputum suction system comprising: Camera module: collects image information, takes pictures of the environment around the suction tube, obtains the location of sputum and the internal condition of the throat, provides intuitive visual information for medical staff, and accurately determines the location of sputum suction; Lighting module: provides lighting, and emits sufficient light to illuminate the surrounding area when the suction tube enters the dark environment of the patient's airway; Imaging guide wire module: responsible for transmitting the image signal and control signal collected by the camera to the information transmission module (21); Image storage module: data storage, responsible for receiving and storing processed image data transmitted from the information transmission module (21); Depth detection module: measures the distance and the depth of the suction tube entering the airway to ensure that the insertion depth of the suction tube is within a safe range; Data encryption module: encrypts data and performs encryption processing on image data transmitted between the imaging guide wire module and the information transmission module (21); Suction time control module: set the maximum suction time, and time and monitor the actual suction time.

Images