Auxiliary device and method for breathing recovery of critical patient

Abstract

The invention discloses a critical patient respiratory recovery assisting device, and particularly relates to the technical field of medical instruments, which comprises a respirator, a mounting seat, a transition tube and a movable ring, the sputum clearing pipe is connected to the end face of the mounting base, the transition pipe is communicated with the sputum clearing pipe, two drainage pipes are fixedly connected to the end face of the movable ring, and penetrating holes allowing the drainage pipes to freely pass through are formed in the sputum clearing pipe; the sputum scraping ring is fixedly connected to the ends, penetrating out of the sputum clearing pipe, of the two drainage pipes, a soft air bag is installed on the periphery of the sputum scraping ring, an inflation assembly used for inflating the soft air bag is arranged on the installation base, and a driving assembly used for driving the sputum scraping ring to freely slide in the axial direction of the sputum clearing pipe is further arranged on the installation base. The volume of the soft air bag is expanded after the soft air bag is inflated, so that the soft air bag abuts against the inner wall of the respiratory tract, then the soft air bag is driven by the driving assembly to move towards the sputum clearing pipe, the soft air bag can scrape off thick sputum adhering to the inner wall of the respiratory tract, and the sputum clearing pipe can conveniently extract the scraped thick sputum.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a respiratory recovery assist device and method for critically ill patients. Background Art

[0002] Severely ill patients are often accompanied by symptoms of being unable to breathe independently. During emergency treatment, a ventilator is generally required to provide respiratory emergency treatment to the patient. During respiratory emergency treatment of critically ill patients, it is often necessary to clear the sputum in the patient's respiratory tract to prevent the sputum from blocking the respiratory tract. Existing ventilators generally insert a tube into the patient's respiratory tract and turn on a sputum suction pump to extract the sputum in the respiratory tract. However, since thick sputum is often easy to adhere to the inner wall of the respiratory tract and is not easily extracted by the suction force of the sputum suction pump, the existing ventilators need to be improved. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a respiratory recovery assistance device and method for critically ill patients. The technical problem to be solved by the present invention is that the existing ventilator cannot effectively remove the thick sputum adhered to the inner wall of the patient's respiratory tract.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A respiratory recovery assist device for critically ill patients, comprising a breathing mask mounted on a ventilator, and further comprising:

[0006] A mounting seat mounted on the breathing mask, a transition pipe being coaxially fixedly connected to the mounting seat, a mounting cavity being formed between the periphery of the transition pipe and the inner wall of the mounting seat, a movable ring being engaged in the mounting cavity, and the movable ring being free to slide in the mounting cavity;

[0007] A sputum clearing tube connected to the end surface of the mounting seat, the transition tube is connected to the sputum clearing tube, the end surface of the movable ring is fixedly connected to two drainage tubes, and a through hole is opened in the sputum clearing tube for the drainage tube to pass freely;

[0008] A sputum scraper ring is fixedly connected to one end of the two drainage tubes passing through the sputum clearing tube, a soft air bag is installed on the periphery of the sputum scraper ring, an inflation component for inflating the soft air bag is provided on the mounting seat, and a driving component for driving the sputum scraper ring to slide freely along the axial direction of the sputum clearing tube is also provided on the mounting seat.

[0009] Furthermore, the breathing mask is provided with an elastic strap.

[0010] Furthermore, the driving assembly includes an electromagnet installed in the installation cavity, the electromagnet is used in conjunction with the movable ring, a first spring is wrapped around the transition tube, and both ends of the first spring in the direction of elastic force elastically press against the movable ring and the electromagnet respectively.

[0011] Furthermore, an end of the mounting base away from the breathing mask is connected with an interface.

[0012] Furthermore, the inflation component includes an annular connecting cavity opened in the scraper ring, a plurality of connecting holes penetrating the annular connecting cavity are opened on the periphery of the scraper ring, a connecting notch is opened on the inner ring wall of the soft air bag, the connecting notch is connected with the connecting hole, the interior of the movable ring is hollow and an inflation port is fixedly connected to its periphery, and the inflation port is connected with the interior of the movable ring.

[0013] Furthermore, the scraper ring is sleeved with two extrusion rings, the extrusion rings slide freely on the scraper ring, the soft air bag is arranged between the two extrusion rings, and the scraper ring is provided with an expansion unit for expanding the soft air bag.

[0014] Furthermore, annular flanges are fixedly connected to both ends of the scraper ring, and two second springs are wound around the scraper ring. Both ends of the second springs in the elastic force direction elastically press against the extrusion ring and the annular flange in a one-to-one correspondence.

[0015] Furthermore, the expansion unit includes a rotating column rotatably connected to the periphery of the scraper ring, two ends of the rotating column respectively penetrate into the soft air bag and the annular connecting cavity, the end face of the scraper ring is penetrated by a fixed sleeve extending into the annular connecting cavity, a telescopic column is coaxially telescopically inserted on the fixed sleeve, one end of the telescopic column passing through the fixed sleeve is fixedly connected to a sealing part, when the end face of the sealing part abuts against the inner wall of the annular connecting cavity, the pipe opening of the drainage tube will be closed, a gear part is provided at the end of the rotating column passing through the annular connecting cavity, a through groove is provided at the periphery of the telescopic column for the gear part to pass freely, a rack part meshing with the gear part is provided on the inner wall of the through groove, and a support arm is fixedly connected to the other end of the rotating column.

[0016] Furthermore, a third spring is installed in the fixed sleeve, and the two ends of the third spring in the elastic force direction elastically press against the inner wall of the fixed sleeve and the end face of the telescopic column respectively. The end of the telescopic column away from the rotating column is fixedly connected to a limit pin, and a waist-shaped hole for the limit pin to be inserted is provided on the periphery of the fixed sleeve, and the limit pin slides freely in the waist-shaped hole.

[0017] A method for respiration recovery of critically ill patients, applied to the above-mentioned respiratory recovery assist device for critically ill patients, the method comprising:

[0018] The patient wears a breathing mask and extends the drainage tube into the patient's respiratory tract. The interior of the drainage tube is evacuated through the transition tube. During the evacuation process, the driving component drives the movable ring to move toward the interior of the patient's respiratory tract.

[0019] When the movable ring moves into place inside the respiratory tract, the vacuum component is started to inflate the soft air bag, causing the inflated volume of the soft air bag to expand, thereby causing the soft air bag to press against the inner wall of the respiratory tract. The driving component then drives the movable ring to move toward the patient's mouth. During the movement, the soft air bag scrapes the thick phlegm between the scraper ring and the end face of the phlegm clearing tube off the inner wall of the respiratory tract, and the vacuum component can simultaneously extract the scraped thick phlegm.

[0020] Technical effects and advantages of the present invention:

[0021] 1. The volume of the soft airbag expands after being inflated, so that the soft airbag presses against the inner wall of the respiratory tract, and then the soft airbag is driven by the driving component to move toward the sputum clearing tube, so that the soft airbag can scrape off the thick sputum adhering to the inner wall of the respiratory tract, making it easier for the sputum clearing tube to extract the scraped thick sputum;

[0022] 2. The electromagnet is powered on to generate magnetism, and a magnetic attraction is generated on the movable ring, so that the movable ring slides in the installation cavity, thereby driving the sputum scraping ring to move. Then the electromagnet is powered off and loses its magnetism, and the movable ring is driven by the first spring to move in the opposite direction, so that the sputum scraping ring can reciprocate. During the reciprocating motion, the soft airbag scrapes off the thick sputum adhered to the inner wall of the respiratory tract;

[0023] 3. The movable ring slides in the installation cavity in a direction away from the sputum clearing tube, so that the support arm's expanding effect on the soft airbag disappears, and the soft airbag can expand radially outward from the sputum scraping ring, so that the soft airbag can more tightly press against the inner wall of the respiratory tract. When the movable ring moves in the opposite direction, the support arm rotates at a fixed angle, so that the support arm expands the soft airbag, and the axial thickness of the soft airbag increases, which is beneficial for the sputum clearing tube to move toward the inside of the respiratory tract. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a respiratory recovery assist device for critically ill patients in the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure from a side view angle;

[0026] Figure 3 for Figure 1 A schematic cross-sectional view of the structure;

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A;

[0028] Figure 5 for Figure 3 A magnified schematic diagram of the local structure at B in the middle;

[0029] Figure 6 It is a schematic diagram of the structure after the sputum scraping ring, the drainage tube and the movable ring are assembled in the present invention;

[0030] Figure 7 for Figure 6 A schematic cross-sectional view of the structure;

[0031] Figure 8 for Figure 7 An enlarged schematic diagram of the local structure at point C in the middle.

[0032] The accompanying drawings are marked as follows: 1. interface; 2. mounting seat; 3. strip hole; 4. inflation port; 5. breathing mask; 6. elastic strap; 7. sputum clearing tube; 8. drainage tube; 9. sputum scraping ring; 10. second spring; 11. extrusion ring; 12. soft air bag; 13. electromagnet; 14. transition tube; 15. first spring; 16. movable ring; 17. rotating column; 18. sealing part; 19. rack part; 20. telescopic column; 21. gear part; 22. waist-shaped hole; 23. limit pin; 24. fixing sleeve; 25. support arm; 26. third spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 8 As shown, the present embodiment discloses: a respiratory recovery assist device for critically ill patients, comprising a breathing mask 5 mounted on a ventilator, an elastic band 6 mounted on the breathing mask 5, a mounting seat 2 with a tubular structure penetrated on the breathing mask 5, a transition pipe 14 coaxially fixedly connected to the mounting seat 2, a mounting cavity is formed between the periphery of the transition pipe 14 and the inner wall of the mounting seat 2, a movable ring 16 is engaged in the mounting cavity, the movable ring 16 slides freely in the mounting cavity, an interface 1 is mounted on the end of the mounting seat 2 away from the breathing mask 5, the interface 1 is connected to the inside of the transition pipe 14, the interface 1 is connected to an external sputum suction pump through a hose, the sputum suction pump is connected to the transition pipe 14, a sputum clearing tube 7 is mounted on the end face of the mounting seat 2, the transition pipe 14 is connected to the sputum clearing tube 7, two drainage tubes 8 are fixedly connected to the end face of the movable ring 16, a through hole for the drainage tube 8 to pass freely is opened in the sputum clearing tube 7, one end of the two drainage tubes 8 passing through the sputum clearing tube 7 is fixedly connected to a sputum scraping ring 9, and a soft air bag 12 is mounted on the periphery of the sputum scraping ring 9;

[0035] An electromagnet 13 is installed in the installation cavity. The electromagnet 13 is used in conjunction with a movable ring 16. The movable ring 16 is made of any one of iron, cobalt and nickel. A first spring 15 is wound around the transition tube 14. The two ends of the first spring 15 in the elastic force direction elastically press against the movable ring 16 and the electromagnet 13 respectively. The electromagnet 13 is powered by an external power module. The electromagnet 13 will generate magnetism after being energized, and generate magnetic force on the movable ring 16, thereby driving the movable ring 16 to move in the direction of the electromagnet 13. At the same time, the movable ring 16 will squeeze the first spring 15, and the first spring 15 accumulates elastic potential energy. In this way, when the electromagnet 13 is powered off, it loses its magnetism, thereby driving the movable ring 16 to move rapidly in the direction away from the electromagnet 13.

[0036] An annular communication cavity is coaxially provided in the scraper ring 9, and a plurality of communication holes penetrating the annular communication cavity are provided on the periphery of the scraper ring 9. A communication gap is provided on the inner ring wall of the soft air bag 12, and the communication gap is connected with the communication hole. The movable ring 16 is hollow inside and an inflation port 4 is fixedly connected to its periphery. The inflation port 4 is connected with the inside of the movable ring 16. A strip hole 3 for the inflation port 4 to pass freely is provided on the periphery of the mounting seat 2. Two extrusion rings 11 are mounted on the scraper ring 9, and the extrusion ring 11 slides freely on the scraper ring 9. The soft air bag 12 is arranged between the two extrusion rings 11. Annular flanges are fixedly provided at both ends of the scraper ring 9, and two second springs 10 are wound around the scraper ring 9. The two ends of the second spring 10 in the elastic force direction elastically resist the extrusion ring 11 and the annular flange one by one. The second spring 10 generates an elastic resisting force on the extrusion ring 11, so that the two extrusion rings 11 generate an extrusion force on the soft air bag 12.

[0037] A rotating column 17 is rotatably connected to the periphery of the scraper ring 9, and two ends of the rotating column 17 respectively penetrate into the soft air bag 12 and the annular communicating cavity. The end face of the scraper ring 9 is penetrated by a fixed sleeve 24 extending into the annular communicating cavity, and a telescopic column 20 is coaxially telescopically inserted on the fixed sleeve 24. One end of the telescopic column 20 passing through the fixed sleeve 24 is fixedly connected to the sealing portion 18. When the end face of the sealing portion 18 abuts against the inner wall of the annular communicating cavity, the pipe opening of the drainage tube 8 is closed. A gear portion 21 is provided at one end of the rotating column 17 that penetrates into the annular communicating cavity. A through groove is provided on the periphery of the telescopic column 20 for the gear portion 21 to pass freely. A rack portion 19 meshing with the gear portion 21 is provided on the inner wall of the through groove. A support arm 25 is fixedly connected to the other end of the rotating column 17. When the support arm 25 rotates, the support arm 25 can open the soft air bag 12, so that the soft air bag 12 abuts against the extrusion ring 11, so that the two extrusion rings 11 move toward the axial outside of the scraper ring 9.

[0038] A third spring 26 is installed in the fixed sleeve 24, and the two ends of the third spring 26 in the elastic force direction elastically press against the inner wall of the fixed sleeve 24 and the end surface of the telescopic column 20 respectively. The end of the telescopic column 20 away from the rotating column 17 is fixedly connected to the limit pin 23. A waist-shaped hole 22 for the limit pin 23 to be inserted is opened on the periphery of the fixed sleeve 24. The limit pin 23 slides freely in the waist-shaped hole 22. The third spring 26 generates an elastic pressing force on the telescopic column 20, so that the telescopic column 20 moves toward the outside direction of the fixed sleeve 24, and the limit pin 23 slides in the waist-shaped hole 22, thereby limiting the movement of the telescopic column 20.

[0039] A method for resuscitation of critically ill patients, applied to the above-mentioned respiratory recovery assist device for critically ill patients, the method comprising:

[0040] The patient wears the breathing mask 5, and at the same time extends the drainage tube 8 into the patient's respiratory tract, and the interior of the drainage tube 8 is evacuated through the transition tube 14. During the evacuation process, the driving component drives the movable ring 16 to move toward the interior of the patient's respiratory tract;

[0041] When the movable ring 16 moves into place inside the respiratory tract, the vacuum component is started to inflate the soft air bag 12, so that the inflated volume of the soft air bag 12 expands, and then the soft air bag 12 presses against the inner wall of the respiratory tract, and then the driving component drives the movable ring 16 to move toward the patient's mouth. During the movement, the soft air bag 12 scrapes the thick phlegm between the scraper ring 9 and the end face of the phlegm clearing tube 7 from the inner wall of the respiratory tract, and the vacuum component can extract the scraped thick phlegm.

[0042] The working principle of the present invention is as follows: the elastic band 6 is put on the patient's head, and then the breathing mask 5 is covered on the patient's mouth and nose, and at the same time, the sputum clearing tube 7 is deeply inserted into the patient's respiratory tract. At this time, the external air pump is in a shutdown state, and there is no air in the soft air bag 12. At this time, the support arm 25 opens the inner part of the soft air bag 12, so that the soft air bag 12 will resist the two extrusion rings 11, so that the two extrusion rings 11 move toward the axial ends of the sputum scraping ring 9, so that the soft air bag 12 will not contact the inner wall of the respiratory tract. After the sputum clearing tube 7 is deeply inserted into the right position, the power supply of the electromagnet 13 is disconnected, so that the electromagnet 13 is powered off and loses its magnetism, so that the first spring 15 moves the movable ring 16 in the direction away from the electromagnet 13, and then the drainage tube 8 drives the sputum clearing ring 9 to move toward the inner direction of the respiratory tract;

[0043] After the movement is completed, the air pump starts to work, and the air pump delivers compressed air to the interface 1, and then from the interface 1 to the inner cavity of the movable ring 16, and then enters the drainage tube 8, and generates a thrust on the sealing part 18, so that the sealing part 18 moves in the direction away from the drainage tube 8. During the movement, the telescopic column 20 moves toward the inner direction of the fixed sleeve 24, and then the gear part 21 and the rack part 19 mesh and rotate, and then the gear part 21 drives the rotating column 17 to rotate, and drives the support arm 25 to rotate 90°, so that the support arm 25 The effect of opening the soft airbag 12 disappears, so that the second spring 10 pushes the extrusion ring 11, so that the extrusion ring 11 starts to squeeze the soft airbag 12, and the soft airbag 12 begins to change to a flat shape;

[0044] The compressed air enters the annular connecting cavity of the scraper ring 9 through the drainage tube 8, then enters the connecting gap of the soft air bag 12 through multiple connecting holes, and then enters the soft air bag 12, causing the soft air bag 12 to begin to expand until the volume of the soft air bag 12 expands and presses against the inner wall of the respiratory tract. The air pump stops working, and the pressure maintaining device is used to prevent the air in the soft air bag 12 from flowing back. Then the electromagnet 13 is energized to generate magnetism, thereby generating a magnetic force on the movable ring 16, so that the movable ring 16 drives the drainage tube 8 to move in the direction of the sputum clearing tube 7. During the movement, since the soft air bag 12 is in contact with the inner wall of the respiratory tract, the thick sputum adhering to the inner wall of the respiratory tract can be scraped off. In this way, when the sputum suction pump is working, the sputum can be extracted through the interface 1, the transition tube 14 and the sputum clearing tube 7.

[0045] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0046] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0047] Finally: The above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A breathing recovery assist device for critically ill patients, comprising a breathing mask (5) mounted on a ventilator, characterized in that: Also includes: A mounting seat (2) mounted on the breathing mask (5), a transition pipe (14) being coaxially fixedly connected to the mounting seat (2), a mounting cavity being formed between the periphery of the transition pipe (14) and the inner wall of the mounting seat (2), a movable ring (16) being engaged in the mounting cavity, and the movable ring (16) being able to slide freely in the mounting cavity; A sputum clearing tube (7) is connected to the end surface of the mounting seat (2), the transition tube (14) is connected to the sputum clearing tube (7), two drainage tubes (8) are fixedly connected to the end surface of the movable ring (16), and a through hole is provided in the sputum clearing tube (7) for the drainage tube (8) to pass freely; A sputum scraper ring (9) is fixedly connected to one end of the two drainage tubes (8) passing through the sputum clearing tube (7); a soft air bag (12) is installed on the periphery of the sputum scraper ring (9); an inflation component for inflating the soft air bag (12) is provided on the mounting seat (2); and a driving component for driving the sputum scraper ring (9) to slide freely along the axial direction of the sputum clearing tube (7) is also provided on the mounting seat (2).

2. The respiratory recovery assist device for critically ill patients according to claim 1, characterized in that: The breathing mask (5) is provided with an elastic belt (6).

3. The breathing recovery assist device for critically ill patients according to claim 1, characterized in that: The driving assembly comprises an electromagnet (13) installed in the installation cavity, the electromagnet (13) is used in conjunction with the movable ring (16), a first spring (15) is wound around the transition tube (14), and the two ends of the first spring (15) in the elastic force direction elastically press against the movable ring (16) and the electromagnet (13) respectively.

4. The breathing recovery assist device for critically ill patients according to claim 1, characterized in that: An end of the mounting seat (2) away from the breathing mask (5) is connected to an interface (1).

5. The breathing recovery assist device for critically ill patients according to claim 1, characterized in that: The inflation component comprises an annular communication cavity provided in the scraper ring (9); a plurality of communication holes penetrating the annular communication cavity are provided on the periphery of the scraper ring (9); a communication notch is provided on the inner ring wall of the soft air bag (12); the communication notch is communicated with the communication hole; the movable ring (16) is hollow inside and an inflation port (4) is fixedly connected to the periphery thereof; the inflation port (4) is communicated with the inside of the movable ring (16).

6. The breathing recovery assist device for critically ill patients according to claim 5, characterized in that: The sputum scraping ring (9) is sleeved with two squeezing rings (11), the squeezing rings (11) slide freely on the sputum scraping ring (9), the soft air bag (12) is arranged between the two squeezing rings (11), and the sputum scraping ring (9) is provided with an expansion unit for expanding the soft air bag (12).

7. The breathing recovery assist device for critically ill patients according to claim 6, characterized in that: The two ends of the sputum scraper ring (9) are respectively fixed with annular flanges, and two second springs (10) are wrapped around the sputum scraper ring (9), and the two ends of the second springs (10) in the elastic force direction respectively elastically press against the extrusion ring (11) and the annular flange in a one-to-one correspondence.

8. The breathing recovery assist device for critically ill patients according to claim 6, characterized in that: The expansion unit comprises a rotating column (17) rotatably connected to the periphery of the sputum scraping ring (9), the two ends of the rotating column (17) respectively penetrate into the soft air bag (12) and the annular connecting cavity, the end surface of the sputum scraping ring (9) is penetrated by a fixed sleeve (24) extending into the annular connecting cavity, a telescopic column (20) is coaxially telescopically inserted into the fixed sleeve (24), and one end of the telescopic column (20) passing through the fixed sleeve (24) is fixedly connected to the sealing portion (18), When the end face of the sealing portion (18) abuts against the inner wall of the annular connecting cavity, the pipe opening of the drainage tube (8) is closed; one end of the rotating column (17) that penetrates into the annular connecting cavity is provided with a gear portion (21); a through groove for the gear portion (21) to pass freely is provided on the periphery of the telescopic column (20); a rack portion (19) meshing with the gear portion (21) is provided on the inner wall of the through groove; and a support arm (25) is fixedly connected to the other end of the rotating column (17).

9. The breathing recovery assist device for critically ill patients according to claim 8, characterized in that: A third spring (26) is installed in the fixing sleeve (24), and the two ends of the third spring (26) in the elastic force direction elastically press against the inner wall of the fixing sleeve (24) and the end surface of the telescopic column (20) respectively. One end of the telescopic column (20) away from the rotating column (17) is fixedly connected to a limit pin (23). A waist-shaped hole (22) for the limit pin (23) to be inserted is opened on the periphery of the fixing sleeve (24), and the limit pin (23) slides freely in the waist-shaped hole (22).

10. A breathing recovery method for critically ill patients, applied to the breathing recovery assist device for critically ill patients according to claim 1, characterized in that: The method includes: The patient wears the breathing mask (5) and extends the drainage tube (8) into the patient's respiratory tract. Air is evacuated from the interior of the drainage tube (8) through the transition tube (14). During the evacuation process, the driving component drives the movable ring (16) to move toward the interior of the patient's respiratory tract. When the movable ring (16) moves into position inside the respiratory tract, the suction component is started to inflate the soft air bag (12), so that the inflated volume of the soft air bag (12) expands, and then the soft air bag (12) presses against the inner wall of the respiratory tract, and then the driving component drives the movable ring (16) to move toward the patient's mouth. During the movement, the soft air bag (12) scrapes the thick sputum located between the sputum scraping ring (9) and the end face of the sputum clearing tube (7) off the inner wall of the respiratory tract, and the suction component can simultaneously extract the scraped thick sputum.

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