A closed thoracic drainage device

Abstract

The application discloses a closed thoracic drainage device, which comprises a drainage bottle, a top cover is arranged at the top end of the drainage bottle, support feet are fixedly connected at the bottom corner positions of the drainage bottle, a sealing cover is arranged on the top cover, a gas-permeable tube communicating with a drainage tube is arranged on the sealing cover, and hooks are arranged on the two sides of the top cover; a water seal tube is arranged in the drainage bottle, a thickened tube is communicated with the top end of the water seal tube, a connecting tube extending to the top end of the sealing cover is communicated with the top end of the thickened tube, and an air bag is arranged in the thickened tube; the closed thoracic drainage device is provided with a moving assembly and an inflation assembly, so that the air bag is moved and inflated, the drainage tank is sealed through the inflation of the air bag, gas is prevented from entering the thoracic cavity of a patient and affecting the treatment of the patient, and thus the problem that the position of the connecting tube and the drainage tube cannot be timely detected and the treatment of the patient is affected due to leakage is solved.

Description

Technical Field

[0001] This invention relates to the technical field of drainage device technology, and more particularly to a closed thoracic drainage device. 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 drainage bottle positioned lower than the tube. This allows for the drainage of air or collection of fluid from the chest cavity, enabling the lung tissue to reopen and restore its function. Closed chest drainage devices play an important role in the treatment of pneumothorax, hemothorax, and empyema.

[0003] Currently, when using a drainage device to drain effusion and gas from a patient's pleural cavity, one end of the drainage tube is inserted into the area containing the effusion and gas, and the other end is connected to a connecting tube in the drainage bottle. During use, it is crucial to ensure a tight seal between the drainage tube and the drainage device to prevent backflow of gas into the patient's pleural cavity, which could affect the patient's condition. However, in practice, leakage can easily occur at the connection point between the drainage tube and the connecting tube due to the movement of the drainage device or the pulling action of the drainage tube. This can cause the device to lose its seal, allowing gas to enter the patient's pleural cavity and affecting the treatment outcome. Therefore, we propose a closed pleural drainage device. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a closed thoracic drainage device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A closed chest drainage device, comprising:

[0007] The drainage bottle includes a top cap and supporting feet fixedly connected to its bottom corners. A sealing cap is mounted on the top cap, which has a vent pipe connecting to the drainage bottle. Hooks are installed on both sides of the top cap. The bottle also includes a water seal pipe installed within it, with a thickening pipe at its top. The thickening pipe's top end is connected to a connecting pipe extending to the top of the sealing cap, and an airbag is installed within the thickening pipe. A moving component, for moving the airbag, is installed within the connecting pipe and extends into the thickening pipe to connect with the airbag. An inflation component, for inflating the airbag, is installed within the top cap and extends into the thickening pipe. This design facilitates the expansion of the airbag after movement, thus sealing the drainage bottle.

[0008] In the aforementioned closed thoracic drainage device, the movable component includes an outer sleeve installed inside the connecting tube and extending into the thickened tube. A fixing frame is fixedly connected to the outer surface of the outer sleeve, and the fixing frame is fixedly connected to the inner wall of the thickened tube. A reciprocating screw is rotatably connected inside the outer sleeve. A threaded block that slides through the outer sleeve is threaded onto the reciprocating screw. A groove adapted to the threaded block is formed on the outer sleeve, and a sliding sleeve communicating with the airbag is fixedly connected to the top of the threaded block. An inflation hole communicating with the airbag is formed on the sliding sleeve, and a rotating shaft is fixedly connected to the bottom end of the reciprocating screw. A rotating component is connected to the outer surface of the rotating shaft. This facilitates the movement of the airbag.

[0009] In the aforementioned closed thoracic drainage device, the rotating component includes a first bevel gear fixedly connected to the rotating shaft, a second bevel gear meshing with the outer side of the first bevel gear, a first connecting post fixedly connected to the axis of the second bevel gear and rotatably connected to the thickened tube, a first spur gear fixedly connected to one end of the first connecting post, and a driving component connected to the axis of the first spur gear. This facilitates the rotation of the reciprocating lead screw.

[0010] The aforementioned closed thoracic drainage device includes an inflation assembly comprising an air inlet tube installed within the rotating shaft and the reciprocating lead screw. The top end of the air inlet tube is connected to an inflation tube, which has several sets of air outlets. A sealing gasket is installed at the top end of the inflation tube. The other end of the air inlet tube extends to the outside of the thickened tube and is connected to a pressure tube. A piston plate is slidably connected within the pressure tube. One side of the piston plate is connected to an elastic element installed within the pressure tube, and the other end is fitted with a pushing element. This facilitates the inflation of the airbag.

[0011] In the aforementioned closed thoracic drainage device, the pushing component includes a first rack fixedly connected to the piston plate and slidably connected to the pressure tube. A second spur gear meshes with the outer side of the first rack. A second connecting shaft is fixedly connected to the axis of the second spur gear. A fixing seat fixedly connected to the top cover is rotatably connected to the outer surface of the second connecting shaft, and a third spur gear connected to the driving component is fixedly connected to one end of the second connecting shaft. This facilitates the movement of the piston plate.

[0012] In the aforementioned closed thoracic drainage device, the elastic element includes a first connecting ring fixedly connected to the piston plate, a first spring fixedly connected to one end of the first connecting ring, and a second connecting ring fixedly connected to the pressure tube at one end of the first spring. This facilitates piston plate repositioning.

[0013] In the aforementioned closed thoracic drainage device, the driving component includes a slide rail fixedly connected to the top cover, a slider slidably connected within the slide rail, a motor fixedly connected to the slider, a drive shaft fixedly connected to the output end of the motor, a fourth spur gear fixedly connected to one end of the drive shaft and meshing with the first spur gear, the fourth spur gear also meshing with the third spur gear, and a slider meshing with the outer side of the fourth spur gear. This facilitates the provision of driving force.

[0014] In the aforementioned closed thoracic drainage device, the sliding component includes a support frame fixedly connected to the top cover. A second rack, meshing with the fourth spur gear, is fixedly connected to the support frame. Limiting elements are connected to both ends of the second rack. This facilitates the sliding of the motor, thereby making it easier to control the rotation of the first and fourth spur gears respectively.

[0015] In the aforementioned closed thoracic drainage device, the limiting member includes a movable tooth meshing with the fourth spur gear. A first fixing block is fixedly connected to the movable tooth. A connecting post is slidably connected to the first fixing block. A second fixing block, fixedly connected to the second rack, is fixedly connected to the connecting post. A second spring, sleeved on the outer surface of the connecting post, is fixedly connected between the first and second fixing blocks. This facilitates limiting the sliding motor.

[0016] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0017] (1) This invention, by incorporating a moving component and an inflation component, allows the pressure sensor surrounding the outer surface of the connection between the connecting pipe and the drainage pipe to detect a pressure change. This indicates a loosening at the connection, triggering the motor to start. This causes the drive shaft to rotate, which in turn rotates the fourth spur gear, which in turn rotates the first spur gear, which in turn rotates the first connecting column, which in turn rotates the second bevel gear. The rotation of the first bevel gear, in turn, causes the reciprocating screw to rotate, thereby moving the threaded block. This, in turn, causes the sliding sleeve and the airbag to move upwards. When the threaded block reaches the top of the reciprocating screw, the sliding sleeve moves onto the inflation pipe and connects with it. When the motor reverses, the sliding component causes the motor to slide, which in turn causes the fourth spur gear to slide and mesh with the third spur gear. This causes the third spur gear to rotate, which in turn causes the second connecting shaft to rotate, which in turn causes the second spur gear to rotate. This causes the first rack to move, which in turn causes the piston plate to move. The movement of the piston plate allows gas from the pressure tube to enter the air bladder, causing the air bladder to inflate. The expansion of the air bladder seals the drainage canister, preventing gas from entering the patient's chest cavity and affecting the patient's treatment. Therefore, this solves the problem in the existing technology where leakage at the connection between the connecting tube and the drainage tube cannot be detected in time and affects the patient's treatment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic cross-sectional view of the present invention.

[0020] Figure 3 This is a partial structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the mobile component of the present invention.

[0022] Figure 5 This is a schematic diagram of the disassembled structure of the mobile component of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the moving component sleeve of the present invention.

[0024] Figure 7 This is a schematic diagram of the inflation component structure of the present invention.

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of area A in the middle.

[0026] Figure 9 This is a schematic diagram of the connection structure of the air inlet pipe, reciprocating lead screw, and air inlet pipe of the present invention.

[0027] Figure 10 This is a schematic diagram of the driving component structure of the present invention.

[0028] Figure 11 For the present invention Figure 10 Schematic diagram of the structure of area B in the middle.

[0029] Figure 12 This is a schematic diagram of the disassembled structure of the airbag, sliding sleeve, and inflation tube of the present invention.

[0030] In the attached diagram: 1. Drainage bottle; 2. Top cap; 3. Support foot; 4. Sealing cap; 5. Vent pipe; 6. Water seal pipe; 7. Thickened pipe; 8. Connecting pipe; 9. Airbag; 10. Moving component; 11. Inflating component; 12. Outer sleeve; 13. Fixing frame; 14. Reciprocating screw; 15. Threaded block; 16. Slide groove; 17. Sliding sleeve; 18. Rotating shaft; 20. Rotating component; 21. First bevel gear; 22. Second bevel gear; 23. First connecting column; 24. First flat gear; 25. Driving component; 26. Air inlet pipe; 27. Inflating pipe; 28. Air outlet; 29. ​​Pressure pipe; 30. Piston plate. 31. Elastic element; 32. Pushing element; 33. First rack; 34. Second spur gear; 35. Second connecting shaft; 36. Fixed seat; 37. Third spur gear; 38. First connecting ring; 39. First spring; 40. Second connecting ring; 41. Slide rail; 42. Slider; 43. Motor; 44. Drive shaft; 45. Fourth spur gear; 46. Sliding element; 47. Support frame; 48. Second rack; 49. Limiting element; 50. Movable tooth; 51. First fixed block; 52. Connecting column; 53. Second fixed block; 54. Second spring; 55. Hook; 56. Inflation hole; 57. Sealing gasket. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the mobile component of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the mobile component of the present invention; Figure 6 This is a schematic diagram of the moving component sleeve structure of the present invention; Figure 7 This is a schematic diagram of the inflation component structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure of area A in the middle; Figure 9 This is a schematic diagram of the connection structure of the air inlet pipe, the reciprocating lead screw, and the air inlet pipe of the present invention; Figure 10 This is a schematic diagram of the driving component structure of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the structure of Zone B; Figure 12 This is a schematic diagram of the disassembled structure of the airbag, sliding sleeve, and inflation tube of the present invention. See also Figures 1 to 12The diagram shows a preferred embodiment of a closed thoracic drainage device, comprising: a drainage bottle 1, with a top cover 2 mounted on its top and a support foot 3 fixedly connected to its bottom corner; a sealing cap 4 mounted on the top cover 2; a vent tube 5 connected to the drainage bottle 1 on the sealing cap 4; and hooks 55 mounted on both sides of the top cover 2; a water seal tube 6 installed in the drainage bottle 1, with a thickening tube 7 connected to its top end; a connecting tube 8 extending to the top of the sealing cap 4 connected to the thickening tube 7; and an airbag 9 installed inside the thickening tube 7; and a moving assembly 10 for moving the airbag 9. The airbag 9 is connected to the connecting tube 8 and extends into the thickened tube 7. The inflation component 11, which is used to inflate the airbag 9, is installed in the top cover 2 and extends into the thickened tube 7. After the pressure sensor around the connecting tube 8 and the drainage tube detects a pressure change, it indicates that there is a leak at the connection. The pressure sensor is selected from the MS5561C series. Then, the moving component 10 will run to drive the airbag 9 to move. When the airbag 9 moves to the top, the airbag 9 is located in the drainage can. At this time, the inflation component 11 runs and inflates the airbag 9, thus sealing the drainage bottle 1.

[0032] In a preferred embodiment, the closed thoracic drainage device further includes: a movable component 10 comprising an outer sleeve 12 installed within the connecting tube 8 and extending into the thickened tube 7; a fixing bracket 13 fixedly connected to the outer surface of the outer sleeve 12, and the fixing bracket 13 fixedly connected to the inner wall of the thickened tube 7; a reciprocating screw 14 rotatably connected within the outer sleeve 12; a threaded block 15 threadedly connected to the reciprocating screw 14 and slidably connected to the outer sleeve 12; and a groove 16 adapted to the threaded block 15 on the outer sleeve 12. The top end of the reciprocating screw 14 is fixedly connected to a sliding sleeve 17 that communicates with the airbag 9. The sliding sleeve 17 has an inflation hole 56 that communicates with the airbag 9. The bottom end of the reciprocating screw 14 is fixedly connected to a rotating shaft 18. The outer surface of the rotating shaft 18 is connected to a rotating component 20. The operation of the rotating component 20 drives the reciprocating screw 14 to rotate. Since the threaded block 15 is slidably connected to the outer sleeve 12, the rotation of the reciprocating screw 14 will drive the threaded block 15 to move, thus driving the sliding sleeve 17 to move, and thus driving the airbag 9 to move.

[0033] In a preferred embodiment, the rotating component 20 includes a first bevel gear 21 fixedly connected to the rotating shaft 18, a second bevel gear 22 meshing with the outer side of the first bevel gear 21, a first connecting post 23 fixedly connected to the shaft of the second bevel gear 22 and rotatably connected to the thickened tube 7, a first spur gear 24 fixedly connected to one end of the first connecting post 23, and a driving component 25 connected to the shaft of the first spur gear 24. By activating the driving component 25, the driving component 25 will drive the first spur gear 24 to rotate, which in turn will drive the first connecting post 23 to rotate, which in turn will drive the second bevel gear 22 to rotate, which in turn will drive the first bevel gear 21 to rotate, which in turn will drive the reciprocating screw 14 to rotate.

[0034] In a preferred embodiment, the inflation assembly 11 includes an air inlet pipe 26 installed within the rotating shaft 18 and the reciprocating lead screw 14. The top end of the air inlet pipe 26 is connected to an inflation pipe 27. The inflation pipe 27 has several sets of air outlets 28. A sealing gasket 57 is installed at the top end of the inflation pipe 27. The other end of the air inlet pipe 26 extends to the outside of the thickened pipe 7 and is connected to a pressure pipe 29. A piston plate 30 is slidably connected inside the pressure pipe 29. One side of the piston plate 30 is connected to a component installed inside the pressure pipe 29. The elastic element 31 is equipped with a pusher 32 at the other end. After the threaded block 15 moves to the top of the reciprocating screw 14, the sliding sleeve 17 drives the airbag 9 to move on the inflation tube 27. At this time, the piston plate 30 is driven to move by the pusher 32. Therefore, the movement of the piston plate 30 squeezes the gas in the pressure tube 29 into the air inlet tube 26, thereby allowing the gas to enter the inflation tube 27. Then, the gas enters the sliding sleeve 17 and the airbag 9 through the air outlet 28, thereby causing the airbag 9 to inflate.

[0035] In a preferred embodiment, the pusher 32 includes a first rack 33 fixedly connected to the piston plate 30 and slidably connected to the pressure tube 29. A second spur gear 34 meshes with the outer side of the first rack 33. A second connecting shaft 35 is fixedly connected to the axis of the second spur gear 34. A fixed seat 36 fixedly connected to the top cover 2 is rotatably connected to the outer surface of the second connecting shaft 35. A third spur gear 37 connected to the drive member 25 is fixedly connected to one end of the second connecting shaft 35. The drive member 25 meshes with the third spur gear 37, thereby driving the third spur gear 37 to rotate, which in turn drives the second connecting shaft 35 to rotate, which in turn drives the second spur gear 34 to rotate, which in turn drives the first rack 33 to move. This causes the piston plate 30 to move, and when the piston plate 30 moves, it will squeeze the elastic member 31, thus facilitating the reset of the piston plate 30.

[0036] In a preferred embodiment, the elastic element 31 includes a first connecting ring 38 fixedly connected to the piston plate 30. One end of the first connecting ring 38 is fixedly connected to a first spring 39, and one end of the first spring 39 is fixedly connected to a second connecting ring 40 fixedly connected to the pressure tube 29. When the piston plate 30 moves, it will drive the first connecting ring 38 to move, thereby driving the first spring 39 to compress, which facilitates the reset of the piston plate 30.

[0037] In a preferred embodiment, the drive member 25 includes a slide rail 41 fixedly connected to the top cover 2. A slider 42 is slidably connected inside the slide rail 41. A motor 43 is fixedly connected to the slider 42. A drive shaft 44 is fixedly connected to the output end of the motor 43. A fourth spur gear 45 is fixedly connected to one end of the drive shaft 44 and meshes with the first spur gear 24. The fourth spur gear 45 also meshes with the third spur gear 37. A slider 46 meshes with the outer side of the fourth spur gear 45. When the airbag 9 is moved, the fourth spur gear 45 meshes with the first spur gear 24. Therefore, the start of the motor 43 will drive the drive shaft 44 to rotate, which in turn drives the fourth spur gear 45 to rotate, thus driving the first spur gear 24 to rotate. After the threaded block 15 moves to the top of the reciprocating screw 14, the motor 43 is reversed. Therefore, the fourth spur gear 45 is reversed. At this time, due to the action of the slider 46, the motor 43 is driven to slide, thereby causing the fourth spur gear 45 to mesh with the third spur gear 37, thus driving the third spur gear 37 to rotate.

[0038] In a preferred embodiment, the sliding member 46 includes a support frame 47 fixedly connected to the top cover 2. A second rack 48 that meshes with the fourth spur gear 45 is fixedly connected to the support frame 47. Both ends of the second rack 48 are connected to limit members 49. When the fourth spur gear 45 is located at both ends of the second rack 48, the limit members 49 limit the fourth spur gear 45, thus limiting the motor 43. As a result, the fourth spur gear 45 can continue to rotate after stopping at both ends of the second rack 48, which facilitates the rotation of the first spur gear 24 and the third spur gear 37.

[0039] In a preferred embodiment, the limiting member 49 includes a movable tooth 50 that meshes with the fourth spur gear 45. A first fixing block 51 is fixedly connected to the movable tooth 50. A connecting post 52 is movably slidably connected to the first fixing block 51. A second fixing block 53, which is fixedly connected to the second rack 48, is fixedly connected to the connecting post 52. A second spring 54, sleeved on the outer surface of the connecting post 52, is fixedly connected between the first fixing block 51 and the second fixing block 53. When the fourth spur gear 45 is located at both ends of the second rack 48, the fourth spur gear 45 meshes with the movable tooth 50. Thus, due to the action of the movable tooth 50 and the spring, the fourth spur gear 45 is limited.

[0040] In a preferred embodiment, after the pressure sensor surrounding the connecting pipe 8 and the drainage pipe detects a pressure change, indicating a leak at the connection, the motor 43 is located near the first spur gear 24. Starting the motor 43 drives the drive shaft 44 to rotate, which in turn drives the fourth spur gear 45 to rotate, thus driving the first spur gear 24 to rotate, which in turn drives the first connecting column 23 to rotate, which in turn drives the second bevel gear 22 to rotate, which in turn drives the first bevel gear 21 to rotate, which in turn drives the reciprocating screw 14 to rotate. Since the threaded block 15 is slidably connected to the outer sleeve 12, the rotation of the reciprocating screw 14 will cause the threaded block 15 to move, thus causing the sliding sleeve 17 to move, and thus causing the airbag 9 to move. (Due to the second rack 48...) Due to the action of the limiting members 49 at both ends, the fourth flat gear 45 stops moving when it reaches one end of the second rack 48, and can rotate to drive the first flat gear 24 to rotate, thereby driving the first flat gear 24 to rotate. After the threaded block 15 moves to the top of the reciprocating screw 14, the sliding sleeve 17 and the air bag 9 are located on the outer surface of the inflation tube 27. At this time, the motor 43 reverses, which will drive the fourth flat gear 45 to reverse. At this time, due to the action of the second rack 48, the fourth flat gear 45 will move, thereby driving the motor 43 to move. When the motor 43 moves to the other end of the slide rail 41, the fourth flat gear 45 stops moving due to the action of the limiting member 49, and at this time, the fourth flat gear 45 and the third flat gear 37... The meshing causes the third spur gear 37 to rotate, which in turn drives the second connecting shaft 35 to rotate, which in turn drives the second spur gear 34 to rotate, which in turn drives the first rack 33 to move, thus driving the piston plate 30 to move. The movement of the piston plate 30 compresses the gas in the pressure tube 29 into the inlet tube 26, allowing the gas to enter the inflation tube 27. This gas then enters the sliding sleeve 17 and the air bladder 9 through the outlet 28, causing the air bladder 9 to inflate and seal the drainage tube. (After sealing, the patient awaits medical personnel's intervention. After intervention, the motor 43 rotates forward, driving the fourth spur gear 45 to move in the reverse direction, causing the motor 43 and the fourth spur gear 45 to reset and mesh with the first spur gear 24. As the fourth spur gear 45 continues to rotate, it will...) The first spur gear 24 rotates, which in turn causes the threaded block 15 to reset due to the action of the reciprocating screw 14. This, in turn, causes the sliding sleeve 17 and the airbag 9 to reset. When the fourth spur gear 45 moves away from the third spur gear 37, the piston plate 30 moves in the opposite direction to reset due to the action of the first spring 39, thus deflating the airbag 9. It should be noted that when the fourth spur gear 45 is located at both ends of the second rack 48, it meshes with the movable tooth 50, causing the movable tooth 50 to move. Therefore, the movable tooth 50 will compress the second spring 54, causing it to disengage from the fourth spur gear 45. Thus, the fourth spur gear 45 will not continue to move, thereby limiting its movement. After the fourth spur gear 45 reverses,At this point, due to the action of the second spring 54, the movable tooth 50 and the fourth spur gear 45 re-engage, thus driving the fourth spur gear 45 to move along the movable tooth 50 and the second rack 48, thereby moving the fourth spur gear 45 to the other end of the second rack 48.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A closed chest drainage device, characterized in that, include: A drainage bottle (1) is provided with a top cover (2) and a support foot (3) is fixedly connected to the bottom corner. A sealing cover (4) is provided on the top cover (2). A vent pipe (5) is provided on the sealing cover (4) and is connected to the drainage bottle (1). Hooks (55) are provided on both sides of the top cover (2). A water seal tube (6) is installed inside the drainage bottle (1). The top end of the water seal tube (6) is connected to a thickened tube (7). The top end of the thickened tube (7) is connected to a connecting tube (8) extending to the top end of the sealing cap (4). An airbag (9) is installed inside the thickened tube (7). A moving component (10) is used to move the airbag (9). The moving component (10) is installed inside the connecting tube (8) and extends into the thickened tube (7) to connect with the airbag (9). The moving component (10) includes: an outer tube (12) installed inside the connecting tube (8) and extending into the thickened tube (7). A fixing frame (13) is fixedly connected to the outer surface of the outer tube (12), and the fixing frame (13) is fixedly connected to the inner wall of the thickened tube (7). A reciprocating screw (1) is rotatably connected inside the outer tube (12). 4) The reciprocating screw (14) is threaded with a threaded block (15) that is slidably connected to the outer sleeve (12). The outer sleeve (12) is provided with a sliding groove (16) that is adapted to the threaded block (15). The top end of the threaded block (15) is fixedly connected with a sliding sleeve (17) that communicates with the airbag (9). The sliding sleeve (17) is provided with an inflation hole (56) that communicates with the airbag (9). The bottom end of the reciprocating screw (14) is fixedly connected with a rotating shaft (18). The outer surface of the rotating shaft (18) is connected with a rotating component (20). An inflation assembly (11) is used to inflate the airbag (9), and the inflation assembly (11) is installed inside the top cover (2) and extends into the thickened tube (7).

2. The closed chest drainage device according to claim 1, characterized in that, The rotating component (20) includes a first bevel gear (21) fixedly connected to the rotating shaft (18), a second bevel gear (22) meshing with the outer side of the first bevel gear (21), a first connecting shaft and a first connecting column (23) fixedly connected to the axis of the second bevel gear (22) and rotatably connected to the thickened tube (7), a first spur gear (24) fixedly connected to one end of the first connecting column (23), and a driving component (25) connected to the axis of the first spur gear (24).

3. A closed thoracic drainage device according to claim 2, characterized in that, The inflation assembly (11) includes an air inlet pipe (26) installed in the rotating shaft (18) and the reciprocating screw (14). The top end of the air inlet pipe (26) is connected to an inflation pipe (27). The inflation pipe (27) has several sets of air outlet holes (28). The top end of the inflation pipe (27) is equipped with a sealing gasket (57). The other end of the air inlet pipe (26) extends to the outside of the thickened pipe (7) and is connected to a pressure pipe (29). A piston plate (30) is slidably connected inside the pressure pipe (29). One side of the piston plate (30) is connected to an elastic element (31) installed inside the pressure pipe (29), and the other end is equipped with a pusher (32).

4. A closed thoracic drainage device according to claim 3, characterized in that, The pusher (32) includes a first rack (33) fixedly connected to the piston plate (30) and slidably connected to the pressure tube (29). A second spur gear (34) meshes with the outer side of the first rack (33). A second connecting shaft (35) is fixedly connected to the axis of the second spur gear (34). A fixed seat (36) fixedly connected to the top cover (2) is rotatably connected to the outer surface of the second connecting shaft (35). A third spur gear (37) connected to the drive member (25) is fixedly connected to one end of the second connecting shaft (35).

5. A closed thoracic drainage device according to claim 3, characterized in that, The elastic element (31) includes a first connecting ring (38) fixedly connected to the piston plate (30), a first spring (39) fixedly connected to one end of the first connecting ring (38), and a second connecting ring (40) fixedly connected to the pressure tube (29) at one end of the first spring (39).

6. A closed thoracic drainage device according to claim 4, characterized in that, The driving component (25) includes a slide rail (41) fixedly connected to the top cover (2), a slider (42) slidably connected inside the slide rail (41), a motor (43) fixedly connected to the slider (42), a drive shaft (44) fixedly connected to the output end of the motor (43), a fourth spur gear (45) fixedly connected to one end of the drive shaft (44) meshing with the first spur gear (24), the fourth spur gear (45) also meshing with the third spur gear (37), and a slider (46) meshing with the outer side of the fourth spur gear (45).

7. A closed thoracic drainage device according to claim 6, characterized in that, The sliding member (46) includes a support frame (47) fixedly connected to the top cover (2). A second rack (48) that meshes with the fourth spur gear (45) is fixedly connected to the support frame (47). Limiting members (49) are connected to both ends of the second rack (48).

8. A closed thoracic drainage device according to claim 7, characterized in that, The limiting member (49) includes a movable tooth (50) that meshes with the fourth flat gear (45). A first fixing block (51) is fixedly connected to the movable tooth (50). A connecting post (52) is movably slidably connected to the first fixing block (51). A second fixing block (53) that is fixedly connected to the connecting post (52) and fixedly connected to the second rack (48) is fixedly connected to the connecting post (52). A second spring (54) sleeved on the outer surface of the connecting post (52) is fixedly connected between the first fixing block (51) and the second fixing block (53).

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