A nursing device for pleural effusion drainage of thoracic surgery patients

Abstract

The present application belongs to the technical field of drainage device, especially to a nursing device for pleural effusion drainage of thoracic surgery patients, which comprises a drainage box, a plug-in cylinder is fixedly connected to the upper side wall of the drainage box, a drainage tube is inserted into the plug-in cylinder, further comprising a fixing assembly, which is sleeved on the outside of the drainage tube, and the position of the drainage tube and the patient is relatively fixed through the fixing assembly; a flushing assembly is arranged on one side of the drainage tube for unblocking the drainage tube. After the drainage tube is blocked, the physiological saline is used for flushing and the hollow rubber ball is used for synchronous cleaning of the inner wall of the drainage tube, so that the physiological saline can flush the clots and fibrin deposits accumulated in the tube, the hollow rubber ball can physically scrape and peel off the tiny sticky residues attached to the inner wall, and the problem of incomplete flushing and re-blocking in a short time caused by single flushing path and uneven impact force of physiological saline flushing alone can be effectively solved.

Description

Technical Field

[0001] This invention belongs to the technical field of drainage devices, and in particular relates to a device for pleural effusion drainage and nursing care that is convenient for thoracic surgery patients. Background Technology

[0002] Closed chest drainage involves inserting one end of a drainage tube into the chest cavity and connecting the other end to a water-seal bottle positioned lower than the tube. This allows for the drainage of gas or the collection of fluid from the chest cavity, enabling the lung tissue to reopen and restore its function. As a treatment method, it is widely used for the drainage of hemothorax, pneumothorax, and empyema, as well as after thoracotomy, playing a vital role in the treatment of these diseases.

[0003] In the clinical treatment of pleural effusion, the drainage tube is a core component for draining pleural effusion and improving the patient's respiratory function. However, drainage tube blockage is a frequent and challenging problem in clinical practice. When a drainage tube becomes blocked, medical staff usually use saline flushing to clear it. Although this operation can quickly dislodge effusion clots, fibrin deposits, and other blockages in the tube, it is limited by the single flow path of the flushing fluid and uneven distribution of impact force, making it difficult to completely remove tiny deposits and sticky residues adhering to the inner wall of the drainage tube. This incomplete flushing will directly lead to the drainage tube becoming blocked again in a short period of time. This not only significantly increases the frequency and workload of medical staff, but also prolongs the patient's treatment period. More seriously, long-term retention of effusion and repeated flushing operations may also lead to adverse consequences such as delayed lung re-expansion and increased risk of pleural infection, which will adversely affect the patient's recovery process.

[0004] Therefore, a device for pleural effusion drainage and nursing care that is convenient for thoracic surgery patients is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a convenient device for draining and caring for pleural effusion in thoracic surgery patients.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for pleural effusion drainage and nursing care for thoracic surgery patients, comprising a drainage box, wherein an insert is fixedly connected to the upper side wall of the drainage box, and a drainage tube is inserted into the insert, and further comprising: The fixing component is fitted over the outside of the drainage tube to fix the position of the drainage tube and the patient. A flushing assembly is located on one side of the drainage tube and is used to unclog the drainage tube; An auxiliary component, located inside the flushing component, is used to clean the sticky residue adhering to the inner wall of the drainage tube.

[0007] In the aforementioned device for pleural effusion drainage and nursing care for thoracic surgery patients, the fixing component includes a perforated plate, the upper end of the drainage tube passes through the perforated plate, connecting seats are fixedly connected to both the left and right sides of the perforated plate, a strap is fixedly connected to the side wall of the connecting seat away from the perforated plate, a square plate is fixedly sleeved on the outer wall of the drainage tube, a rotating rod is rotatably connected to the lower side wall of the perforated plate, a rotating plate is fixedly connected to the lower end of the rotating rod, a threaded pin is threadedly connected to the side wall of the rotating plate, and a pressure plate is fixedly connected to the upper end of the threaded pin.

[0008] In the aforementioned device for pleural effusion drainage and nursing care for thoracic surgery patients, the irrigation assembly includes a placement frame located on the right side of the drainage tube. A water tank is fixedly connected to the upper inner wall of the placement frame, and the water tank contains physiological saline. A controller is fixedly connected to the right side wall of the placement frame, and a small water pump is fixedly connected to the left side wall of the water tank. The inlet of the small water pump is connected to the water tank, and the outlet of the small water pump is fixedly connected to an outlet pipe. A drain pipe is fixedly connected to the wall of the drainage tube. The end of the outlet pipe away from the small water pump passes through the placement frame and is connected to the right end of the drain pipe through a threaded joint.

[0009] In the above-mentioned device for pleural effusion drainage and nursing care for thoracic surgery patients, two support rods are symmetrically fixedly connected to the upper side wall of the placement frame. Both support rods are inverted L-shaped structures, and the upper ends of the support rods are fixedly connected with clamps.

[0010] In the aforementioned device for facilitating pleural effusion drainage and nursing care for thoracic surgery patients, the auxiliary components include an auxiliary box. The auxiliary box is fixedly connected to the inner wall of a placement frame via two elastic rods. A servo motor is fixedly connected to the upper side wall of the auxiliary box. A horizontal plate is fixedly connected to the inner wall of the auxiliary box. The horizontal plate and the side wall of the auxiliary box on opposite sides are rotatably connected to the same rotating tube. The output end of the servo motor passes through the auxiliary box and is fixedly connected to the upper end of the rotating tube. A flexible tube is wound around the outer wall of the rotating tube, and the upper end of the flexible tube communicates with the rotating tube. An air supply device is fixedly connected to the lower inner wall of the auxiliary box. The pump has an outlet end that is rotatably connected to the lower end of a rotating pipe via a sealed bearing. A short pipe is fixedly connected to the side wall of the auxiliary box. A telescopic pipe is fixedly connected to the left end of the short pipe. A guide pipe is fixedly connected to the end of the telescopic pipe away from the short pipe. A horizontal pipe is fixedly connected to the wall of the drainage pipe. The left end of the guide pipe passes through the placement frame and is connected to the horizontal pipe via a threaded joint. The lower end of the hose passes through the short pipe, telescopic pipe, guide pipe, and horizontal pipe and is located inside the drainage pipe. A hollow rubber ball is fixedly connected to the end of the hose located inside the drainage pipe. A water-blocking ring is fixedly connected to the inner wall of the guide pipe.

[0011] In the above-mentioned device for pleural effusion drainage and nursing care for thoracic surgery patients, a trigger switch is connected to the left inner wall of the placement frame via an elastic rod, and the trigger switch is electrically connected to the controller.

[0012] In the above-mentioned device for pleural effusion drainage and nursing care for thoracic surgery patients, a pressure sensor is connected to the side wall of the rotating tube, and the detection interface of the pressure sensor is connected to the rotating tube. The pressure sensor is electrically connected to the controller. A venting tube is fixedly connected to the side wall of the rotating tube, and a venting valve is provided inside the venting tube.

[0013] In the above-mentioned device for pleural effusion drainage and nursing care for thoracic surgery patients, the upper side wall of the drainage box is fixedly connected to an installation ring by a bracket, and an infrared occlusion sensor is fixedly connected to the inner wall of the installation ring. The infrared occlusion sensor is electrically connected to the controller.

[0014] Compared with existing technologies, the advantages of a device that facilitates pleural effusion drainage and care for thoracic surgery patients are: 1. Through the designed flushing and auxiliary components, after the drainage tube becomes blocked, the system uses saline flushing in conjunction with a hollow rubber ball to simultaneously clean the inner wall of the drainage tube. The synergistic effect of saline flushing to remove accumulated clots and fibrin deposits and the physical scraping and peeling off tiny sticky residues adhering to the inner wall by the hollow rubber ball effectively solves the problems of incomplete flushing and re-blockage in a short time caused by the single path and uneven impact of saline flushing alone. This reduces the frequency and workload of repeated flushing for medical staff, reduces the risk of irritation and infection to the patient's chest cavity caused by repeated flushing, restores the patency of the drainage tube and extends its effective service life, ensures continuous and stable drainage, and helps shorten the treatment cycle and promote the recovery process for patients.

[0015] 2. The fixed components enhance the stability of the connection between the drainage tube and the patient, effectively preventing displacement, detachment, or loosening of the drainage tube due to external forces such as pulling, turning, or movement. This reduces the workload of medical staff in repeatedly repositioning and replacing the drainage tube, lowers the risk of cross-infection, improves patient comfort and treatment compliance, ensures continuous and unobstructed drainage, and helps patients recover smoothly.

[0016] 3. The support rods and clamps allow the flushing assembly to be fixed to the bed railing, ensuring a stable hanging position and preventing tipping, tubing entanglement, or contamination caused by improper placement. It also reduces issues such as poor flushing fluid delivery and unstable pressure due to component displacement. Medical staff do not need to manually retrieve or move the assembly, simplifying the saline flushing procedure, reducing their workload, and preventing the flushing assembly from bumping into the patient and causing discomfort. This ensures a safe and orderly flushing operation and helps maintain the stable operation of the drainage device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pleural effusion drainage and nursing device for thoracic surgery patients provided by the present invention; Figure 2 This is a schematic diagram of the rinsing component in a pleural effusion drainage and nursing device for thoracic surgery patients provided by the present invention; Figure 3 This is a schematic diagram of the fixation component in a pleural effusion drainage and nursing device for thoracic surgery patients provided by the present invention; Figure 4 This is a schematic diagram of the auxiliary components in a pleural effusion drainage and nursing device for thoracic surgery patients provided by the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the infrared occlusion sensor and the mounting ring in a pleural effusion drainage and nursing device for thoracic surgery patients provided by the present invention.

[0018] In the diagram: 1. Drainage box, 2. Insert tube, 3. Drainage pipe, 4. Fixing assembly, 401. Orifice plate, 402. Connecting seat, 5. Strap, 6. Square plate, 7. Rotating rod, 8. Rotating plate, 9. Threaded pin, 10. Pressure plate, 11. Flushing assembly, 111. Placement rack, 112. Water tank, 12. Controller, 13. Small water pump, 14. Water outlet pipe, 15. Unblocking pipe, 16. Support rod, 17. Clamp, 18. Auxiliary assembly, 181. Auxiliary box, 182. Servo motor, 19. Horizontal plate, 20. Rotating pipe, 21. Flexible hose, 22. Air pump, 23. Short pipe, 24. Telescopic pipe, 25. Guide pipe, 26. Horizontal pipe, 27. Hollow rubber ball, 28. Water blocking ring, 29. Trigger switch, 30. Air pressure sensor, 31. Air release pipe, 32. Air release valve, 33. Mounting ring, 34. Infrared blocking sensor. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-5 As shown, a device for pleural effusion drainage and nursing care for thoracic surgery patients includes a drainage box 1, with an insertion tube 2 fixedly connected to the upper side wall of the drainage box 1, and a drainage tube 3 inserted into the insertion tube 2. It also includes: Fixing component 4 is sleeved on the outside of drainage tube 3. Fixing component 4 includes perforated plate 401. The upper end of drainage tube 3 passes through perforated plate 401. Connecting seats 402 are fixedly connected to both the left and right sides of perforated plate 401. A strap 5 is fixedly connected to the side wall of connecting seat 402 away from perforated plate 401. A square plate 6 is fixedly sleeved on the outer wall of drainage tube 3. A rotating rod 7 is rotatably connected to the lower side wall of perforated plate 401. A rotating plate 8 is fixedly connected to the lower end of rotating rod 7. A threaded pin 9 is threadedly connected to the side wall of rotating plate 8. A pressure plate 10 is fixedly connected to the upper end of threaded pin 9. The fixing component 4 fixes the position of drainage tube 3 and patient relatively. A flushing assembly 11 is disposed on one side of the drainage tube 3. The flushing assembly 11 includes a placement rack 111, which is located on the right side of the drainage tube 3. A water tank 112 is fixedly connected to the upper inner wall of the placement rack 111. The water tank 112 contains physiological saline. A controller 12 is fixedly connected to the right side wall of the placement rack 111. A small water pump 13 is fixedly connected to the left side wall of the water tank 112. The inlet end of the small water pump 13 is connected to the water tank 112. The outlet end of the small water pump 13 is fixedly connected to the outlet pipe 14. A drain pipe 15 is fixedly connected to the wall of the drainage tube 3. The end of the outlet pipe 14 away from the small water pump 13 passes through the placement rack 111 and is connected to the right end of the drain pipe 15 through a threaded joint for unblocking the drainage tube 3. An auxiliary component 18 is disposed inside the rinsing component 11. The auxiliary component 18 includes an auxiliary box 181, which is fixedly connected to the inner wall of the placement rack 111 via two elastic rods. A servo motor 182 is fixedly connected to the upper side wall of the auxiliary box 181. A horizontal plate 19 is fixedly connected to the inner wall of the auxiliary box 181. The same rotating pipe 20 is rotatably connected to the side wall of the horizontal plate 19 and the opposite side wall of the auxiliary box 181. The output end of the servo motor 182 passes through the auxiliary box 181 and is fixedly connected to the upper end of the rotating pipe 20. A flexible hose 21 is wound around the outer wall of the rotating pipe 20, and the upper end of the flexible hose 21 communicates with the rotating pipe 20. An air pump 22 is fixedly connected to the lower inner wall of the auxiliary box 181, and the air outlet of the air pump 22 is connected to... The lower end of the sealed bearing and the rotating tube 20 are rotatably connected. The side wall of the auxiliary box 181 is fixedly connected to the short tube 23. The left end of the short tube 23 is fixedly connected to the telescopic tube 24. The end of the telescopic tube 24 away from the short tube 23 is fixedly connected to the guide tube 25. The wall of the drainage tube 3 is fixedly connected to the horizontal tube 26. The left end of the guide tube 25 passes through the placement frame 111 and is connected to the horizontal tube 26 through a threaded joint. The lower end of the hose 21 passes through the short tube 23, the telescopic tube 24, the guide tube 25 and the horizontal tube 26 and is located inside the drainage tube 3. The end of the hose 21 located inside the drainage tube 3 is fixedly connected to the hollow rubber ball 27. The inner wall of the guide tube 25 is fixedly connected to the water-blocking ring 28, which is used to clean the sticky residue adhering to the inner wall of the drainage tube 3.

[0021] Two support rods 16 are symmetrically fixedly connected to the upper side wall of the placement rack 111. Both support rods 16 are inverted L-shaped structures, and the upper ends of the support rods 16 are fixedly connected to clamps 17.

[0022] A trigger switch 29 is connected to the inner left side of the placement rack 111 via an elastic rod. The trigger switch 29 is electrically connected to the controller 12.

[0023] A pressure sensor 30 is connected to the side wall of the rotating tube 20, and the detection interface of the pressure sensor 30 is connected to the rotating tube 20. The pressure sensor 30 is electrically connected to the controller 12. A venting pipe 31 is fixedly connected to the side wall of the rotating tube 20, and a venting valve 32 is provided inside the venting pipe 31.

[0024] An mounting ring 33 is fixedly connected to the upper side wall of the drainage box 1 via a bracket. An infrared blocking sensor 34 is fixedly connected to the inner wall of the mounting ring 33. The infrared blocking sensor 34 is electrically connected to the controller 12.

[0025] The operating principle of this invention is explained as follows: Medical staff insert the lower end of the drainage tube 3 into the drainage box 1 through the insert 2, then install the placement frame 111 on the bed rail using the clamp 17, and connect the drain pipe 15 and the water outlet pipe 14 through the threaded connector. The end of the flexible tube 21 extending from the guide tube 25 and the hollow rubber ball 27 are placed into the drainage tube 3 through the horizontal tube 26, and the horizontal tube 26 and the guide tube 25 are connected through the threaded connector. Next, the operator sends an electrical signal to the controller 12 through an external remote control switch. Upon receiving the signal, the controller 12 controls the air pump 22 to operate. The air pump 22 delivers external gas through the rotating tube 20 and the flexible tube 21 into the hollow rubber ball 27, causing the hollow rubber ball 27 to inflate. The controller 12 detects the air pressure of the hollow rubber ball 27 through the air pressure sensor 30. When the controller 12 detects the air pressure through the air pressure sensor 30... Once the hollow rubber ball 27 reaches the set threshold (1.05 standard atmospheres), the air pump 22 will stop working, and the hollow rubber ball 27 will expand to the set volume. This volume will not cause blockage of the drainage tube 3, but it is larger than the inner diameter of the horizontal tube 26. Then, the controller 12 controls the servo motor 182 to work. The servo motor 182 will drive the rotating tube 20 to rotate, and use the rotating tube 20 to wind up the hose 21. The hose 21 will pull the hollow rubber ball 27. When the hollow rubber ball 27 contacts the left end of the horizontal tube 26, under the action of the interaction force, the hose 21 will apply a pulling force to the auxiliary box 181. Under the action of the pulling force, the auxiliary box 181 will move to the left and squeeze the trigger switch 29. The trigger switch 29 will then control the servo motor 182 to stop working through the controller 12. Then, the medical staff will insert the upper end of the drainage tube 3 into the patient's chest cavity drainage area to carry out the drainage work. When the drainage tube 3 becomes blocked during operation (the end of the drainage tube 3 near the drainage box 1 is prone to blockage because this location is at the end of the drainage path; on the one hand, sediment, blood clots, and tissue debris in the drainage fluid are prone to deposit here due to the sudden drop in flow rate; on the other hand, this area often suffers from pipe twisting and fitting into the box body due to improper fixing, resulting in local dead space, and the reverse pressure during flushing can easily cause loosened deposits to become stuck here again), the controller 12 will detect this situation through the infrared blocking sensor 34 and then control a valve inside the drainage tube 3 to close (this valve is located above the unblocking pipe 15). Figure 1 (Unlabelled) Simultaneously, the controller controls the small water pump 13 to operate. The small water pump 13 delivers the saline solution stored in the water tank 112 to the drainage pipe 3 through the outlet pipe 14 and the unblocking pipe 15 to flush and unblock the blockage. After the flushing operation has been running for ten seconds, the controller 12 will control the air pump 22 to operate and control the servo motor 182 to rotate slowly. Based on the above principle, when the controller 12 detects that the hollow rubber ball 27 has reached the set threshold (1.1 standard atmospheres) through the air pressure sensor 30, it will control the air pump 22 to stop operating. At this time, the hollow rubber ball 27 will block the drainage pipe 3. Under the impact of the water flow above, the hollow rubber ball 27 will move downwards, using the hollow rubber ball 27 to physically scrape off the tiny sticky residues attached to the inner wall of the drainage pipe 3. This effectively solves the problems of incomplete flushing and re-blocking in a short time caused by the single path and uneven impact force of simple saline flushing. When the servo motor 182 rotates in reverse for twenty seconds, the hollow rubber ball 27 will extend from the lower port of the drainage pipe 3, thus cleaning up all the tiny sticky residues. The controller 12 will then control the vent valve 32 to open and control the small water pump 13 to stop working. The gas inside the hollow rubber ball 27 will be discharged through the hose 21, the rotating pipe 20 and the vent pipe 31. When the controller 12 detects through the air pressure sensor 30 that the air pressure inside the hollow rubber ball 27 has returned to 1.05 standard atmospheres, the controller 12 will control the servo motor 182 to rotate in reverse. Based on the above principle, the hollow rubber ball 27 will be moved back to the left end of the horizontal pipe 26 for sealing (because the guide pipe 25 is equipped with a water-blocking ring 28 and the left end of the horizontal pipe 26 is tilted downwards, it can prevent saline from entering the auxiliary tank 181, and the small amount of residual saline will be discharged through the tilted horizontal pipe 26 after the rinsing work is completed).

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for pleural effusion drainage and nursing care for thoracic surgery patients, comprising a drainage box (1), wherein an insert (2) is fixedly connected to the upper side wall of the drainage box (1), and a drainage tube (3) is inserted into the insert (2), characterized in that, Also includes: The fixing component (4) is fitted outside the drainage tube (3) to fix the position of the drainage tube (3) and the patient. A flushing assembly (11) is provided on one side of the drainage tube (3) for unblocking the drainage tube (3); An auxiliary component (18) is located inside the flushing component (11) for cleaning the sticky residue adhering to the inner wall of the drainage tube (3).

2. The device for pleural effusion drainage and nursing care for thoracic surgery patients according to claim 1, characterized in that, The fixing component (4) includes a perforated plate (401), the upper end of the drainage tube (3) passes through the perforated plate (401), and connecting seats (402) are fixedly connected to both the left and right sides of the perforated plate (401). A strap (5) is fixedly connected to the side wall of the connecting seat (402) away from the perforated plate (401). A square plate (6) is fixedly sleeved on the outer wall of the drainage tube (3). A rotating rod (7) is rotatably connected to the lower side wall of the perforated plate (401). A rotating plate (8) is fixedly connected to the lower end of the rotating rod (7). A threaded pin (9) is threadedly connected to the side wall of the rotating plate (8). A pressure plate (10) is fixedly connected to the upper end of the threaded pin (9).

3. The device for pleural effusion drainage and nursing care for thoracic surgery patients according to claim 1, characterized in that, The flushing assembly (11) includes a placement rack (111), which is located on the right side of the drainage tube (3). A water tank (112) is fixedly connected to the upper inner wall of the placement rack (111), and physiological saline is stored in the water tank (112). A controller (12) is fixedly connected to the right side wall of the placement rack (111), and a small water pump (13) is fixedly connected to the left side wall of the water tank (112). The inlet end of the small water pump (13) is connected to the water tank (112), and the outlet end of the small water pump (13) is fixedly connected to an outlet pipe (14). A drain pipe (15) is fixedly connected to the wall of the drainage tube (3). The end of the outlet pipe (14) away from the small water pump (13) passes through the placement rack (111) and is connected to the right end of the drain pipe (15) through a threaded joint.

4. The pleural effusion drainage and nursing device for thoracic surgery patients according to claim 3, characterized in that, The upper side wall of the placement rack (111) is symmetrically fixed with two support rods (16), both of which are inverted L-shaped structures, and the upper end of the support rods (16) is fixedly connected with a clamp (17).

5. The pleural effusion drainage and nursing device for thoracic surgery patients according to claim 3, characterized in that, The auxiliary component (18) includes an auxiliary box (181), which is fixedly connected to the inner wall of the placement rack (111) via two elastic rods. A servo motor (182) is fixedly connected to the upper side wall of the auxiliary box (181), and a horizontal plate (19) is fixedly connected to the inner wall of the auxiliary box (181). The horizontal plate (19) and the side wall of the auxiliary box (181) on opposite sides are rotatably connected to the same rotating pipe (20). The output end of the servo motor (182) passes through the auxiliary box (181) and is fixedly connected to the upper end of the rotating pipe (20). A flexible hose (21) is wound around the outer wall of the rotating pipe (20), and the upper end of the flexible hose (21) communicates with the rotating pipe (20). An air pump (22) is fixedly connected to the lower inner wall of the auxiliary box (181), and the air outlet of the air pump (22) is connected to the air outlet of the auxiliary box (181). The lower end of the sealed bearing and the rotating tube (20) are rotatably connected. The side wall of the auxiliary box (181) is fixedly connected to a short tube (23). The left end of the short tube (23) is fixedly connected to a telescopic tube (24). The end of the telescopic tube (24) away from the short tube (23) is fixedly connected to a guide tube (25). The wall of the drainage tube (3) is fixedly connected to a horizontal tube (26). The left end of the guide tube (25) passes through the placement frame (111) and is connected to the horizontal tube (26) through a threaded joint. The lower end of the hose (21) passes through the short tube (23), the telescopic tube (24), the guide tube (25) and the horizontal tube (26), and is located inside the drainage tube (3). The end of the hose (21) located inside the drainage tube (3) is fixedly connected to a hollow rubber ball (27). The inner wall of the guide tube (25) is fixedly connected to a water-blocking ring (28).

6. The device for pleural effusion drainage and nursing care for thoracic surgery patients according to claim 5, characterized in that, The left inner wall of the placement rack (111) is connected to a trigger switch (29) via an elastic rod, and the trigger switch (29) is electrically connected to the controller (12).

7. The pleural effusion drainage and nursing device for thoracic surgery patients according to claim 5, characterized in that, The side wall of the rotating tube (20) is connected to a pressure sensor (30), and the detection interface of the pressure sensor (30) is connected to the rotating tube (20). The pressure sensor (30) is electrically connected to the controller (12). The side wall of the rotating tube (20) is fixedly connected to a venting pipe (31), and a venting valve (32) is provided inside the venting pipe (31).

8. The pleural effusion drainage and nursing device for thoracic surgery patients according to claim 3, characterized in that, The upper side wall of the drainage box (1) is fixedly connected to an installation ring (33) by a bracket, and an infrared blocking sensor (34) is fixedly connected to the inner wall of the installation ring (33). The infrared blocking sensor (34) and the controller (12) are electrically connected.

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