Auxiliary sputum aspirator for nursing critical patient

Abstract

The invention relates to the field of sputum aspirators, in particular to an auxiliary sputum aspirator for nursing critical patients, and solves the problems that sputum is easily sucked into an existing sputum aspirator, pollution is caused, and cleanliness is reduced. The device comprises a sputum aspirator, a case, a pressurizing and heating module, a sputum storage tank, a telescopic part, a supporting plate, a sealing cover, a negative pressure pipe head, a negative pressure cylinder, a tank cover, a sealing assembly, a top frame, a limiting block and a cleaning assembly, the cleaning assembly is used for cleaning the sputum storage tank, upper sliding seats are slidably connected to the inner walls of the two sides of the case, a nozzle is installed at the lower end of each upper sliding seat, and the lower end of each upper sliding seat is provided with a nozzle. A linkage assembly is further arranged in the machine box and used for driving the nozzles on the two sides to get close to each other when the supporting plate moves downwards so as to spray a cleaning disinfectant to the negative-pressure barrel and the negative-pressure pipe head for cleaning. The device effectively prevents sputum from entering the sputum aspirator, the cleanliness of the sputum aspirator in long-term use can be guaranteed, and meanwhile cleaning and disinfection are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of sputum aspirators, and in particular to an auxiliary sputum aspirator for the care of critically ill patients. Background Art

[0002] An auxiliary sputum aspirator is a medical device used to help critically ill patients remove respiratory secretions. By means of mechanical suction, sputum, blood or other foreign substances in the patient's airway are sucked out to keep the respiratory tract unobstructed and prevent complications such as asphyxia and pulmonary infection. Critically ill patients often have respiratory secretions retention due to reasons such as impaired consciousness, weak cough, and swallowing dysfunction. The auxiliary sputum aspirator can timely remove the secretions, avoid airway blockage, reduce the retention time of secretions in the airway, lower the risk of bacterial growth and infection, ensure the normal exchange of oxygen and carbon dioxide, and improve the patient's breathing efficiency.

[0003] However, existing sputum aspirators usually only have a single sputum storage tank, with one side of the sputum storage tank connected to a sputum suction tube and the other side directly connected to the sputum aspirator through a hose. In this way, when in use, sputum may enter the sputum aspirator through the hose, and it is not convenient to clean the inside of the sputum aspirator. Over time, it will cause pollution to the inside of the sputum aspirator. Therefore, an auxiliary sputum aspirator for the care of critically ill patients is proposed. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention proposes an auxiliary sputum aspirator for the care of critically ill patients, which can be provided with an additional negative pressure container between the sputum storage tank and the sputum aspirator, significantly reducing the possibility of the sputum aspirated from the patient entering the sputum aspirator, facilitating the cleanliness of the sputum aspirator, and at the same time enabling convenient disinfection and cleaning of the negative pressure container.

[0005] To solve the above technical problems, the basic technical solution proposed by the present invention is as follows:

[0006] An auxiliary sputum aspirator for the care of critically ill patients includes a sputum aspirator. The front end of the sputum aspirator is connected to a chassis with an opening at the upper end. A pressurization and heating module is installed on one side of the chassis. A sputum storage tank is provided on one side of the chassis. A telescopic member is connected inside the chassis, and the output end of the telescopic member is connected to a tray. A sealing cover for covering the opening is connected above the tray. A negative pressure nozzle is installed on one side of the upper end surface of the tray, and a negative pressure cylinder is provided on the other side. A tank cover is slidably connected to the tray, and the tank cover is hermetically sleeved with the upper end of the sputum storage tank.

[0007] The inner wall of the can lid is provided with a sealing assembly for sealing between the sputum storage can and the can lid. The bottom of the chassis is connected with a top frame sleeved with a support plate. The sealing cover is connected with a limiting block that abuts against the upper end of the top frame. A cleaning assembly is arranged in the top frame for cleaning the sputum storage can. The two inner walls of the chassis are also slidably connected with upper sliding seats, and a nozzle is installed at the lower end of each upper sliding seat. A linkage assembly is further arranged in the chassis for driving the nozzles on both sides to approach each other when the support plate moves downward, so as to spray cleaning disinfectant on the negative pressure cylinder and the negative pressure pipe head respectively for cleaning.

[0008] Preferably, a threaded cylinder is connected to the upper end of the chassis, and the outer side surface of the lower end of the sputum storage can is threadedly sleeved in the threaded cylinder. The upper end of the support plate is connected with an electric threaded seat, and the outer side surface of the lower end of the negative pressure cylinder is threadedly sleeved in the electric threaded seat.

[0009] Preferably, a connecting frame is connected to the upper end of the support plate, and the sealing cover is connected to the upper end of the connecting frame. An air inlet pipe and an air outlet pipe are connected to the upper ends of both the sputum storage can and the sealing cover. The air inlet pipe on the sputum storage can is connected with a sputum suction pipe. Hoses are connected between the air outlet pipe on the sputum storage can and the air inlet pipe on the sealing cover, and between the air outlet pipe on the sealing cover and the negative pressure pipe head.

[0010] Preferably, the sealing assembly includes a clamping seat, an annular sealing groove, an annular platform, and an annular rubber ring. The clamping seats are connected to both sides of the can lid, and one side of the lower end of the clamping seat abuts against the upper inner wall of the chassis at the opening. The annular sealing groove is opened in the can lid and is hermetically sleeved with the upper end of the negative pressure cylinder. The annular platform is connected to the upper end of the inner wall of the negative pressure cylinder. The annular rubber ring is connected in the sealing cover, and a top ring that cooperates with and abuts against the upper end of the annular platform is connected to the lower end of the annular rubber ring. The annular rubber ring is in fit and abutment with the inner wall of the negative pressure cylinder.

[0011] Preferably, the annular platform, the annular rubber ring, and the top ring are all located inside the annular sealing groove.

[0012] Preferably, sliding rods are connected to both sides of the support plate, and the other side of the lower end of both clamping seats is also slidably sleeved on the surface of the sliding rods. A first spring sleeved on the surface of the sliding rods is connected between the upper end of the sliding rods and the lower end of the clamping seats.

[0013] Preferably, the linkage assembly includes lower sliding seats and a rotating plate. There are two lower sliding seats, which are respectively slidably connected to both sides of the lower inner wall of the chassis. One end of the rotating plate is rotatably connected to the lower sliding seat, and the other end is rotatably connected to the adjacent upper sliding seat.

[0014] Preferably, guide rod frames I are connected to the inner walls on both the left and right sides of the chassis. The upper sliding seat is slidably sleeved outside the guide rod frames I. A third spring sleeved outside the guide rod frames I is connected between the upper sliding seat and the inner wall of the chassis. Slide rod frames II are connected to both sides of the bottom of the chassis. The lower sliding seat is slidably sleeved outside the slide rod frames II. A second spring sleeved outside the slide rod frames II is connected between the lower sliding seat and the bottom of the chassis.

[0015] Preferably, the cleaning assembly includes a slide port, a sliding groove, a sliding plate, and a cleaning brush. The slide port is opened on the support plate. The support plate is slidably sleeved on the outer side of the top frame through the slide port. The sliding groove is opened on one side of the top frame close to the negative pressure cylinder. The sliding plate is trapezoidal and is slidably connected in the sliding groove, and the sliding plate is in contact with and slides against the inner wall of the slide port. The cleaning brush is installed on the sliding plate and slides in the slide port.

[0016] Preferably, slide rod frames III are connected to both the upper and lower inner walls of the sliding groove. The upper and lower ends of the sliding plate are respectively slidably sleeved outside the slide rod frames III. A fourth spring sleeved outside the slide rod frames III is connected between the sliding plate and the inner wall of the sliding groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the technical solution of the present invention, a negative pressure cylinder is added between the sputum storage tank and the sputum aspirator. In this way, when the sputum storage tank is connected to the negative pressure cylinder and the negative pressure cylinder is indirectly connected to the sputum aspirator, when the sputum in the patient's body is aspirated by the sputum storage tank, due to the setting of the negative pressure cylinder, the possibility of sputum entering the sputum aspirator is significantly reduced, and the sputum aspirator is effectively kept clean.

[0019] 2. In the technical solution of the present invention, the telescopic member drives the support plate to move upward, so that the tank cover and the card seat move upward, and then the card seat abuts against the inner wall of the chassis, so that the tank cover moves downward relative to the negative pressure cylinder to tightly seal the negative pressure cylinder. At the same time, a second seal is also carried out between the tank cover and the negative pressure cylinder through the sealing assembly to achieve an effective sealing effect.

[0020] 3. In the technical solution of the present invention, the telescopic member drives the support plate to move downward until the sealing cover seals the opening. When the limiting block abuts against the top frame during the process, the tank cover can be driven to slide away from the negative pressure cylinder relative to the chassis. At the same time, the downward movement of the support plate will also drive the linkage assembly to pull the upper sliding seats on both sides and the nozzles to approach each other. Then the nozzles on both sides respectively move to directly above the negative pressure cylinder and the negative pressure pipe head to facilitate spraying cleaning disinfectant on the two for cleaning and disinfection, and the surface of the sputum aspirator can also be cleaned by the cleaning assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2A cross-sectional view of the structure of the present invention;

[0023] Figure 3 is Figure 2 an enlarged view of part A in

[0024] Figure 4 a schematic diagram of the internal structure of the chassis of the present invention;

[0025] Figure 5 a bottom-up schematic diagram of the internal structure of the chassis of the present invention;

[0026] Figure 6 a left-side schematic diagram of the internal structure of the chassis of the present invention;

[0027] Figure 7 a right-side schematic diagram of the internal structure of the chassis of the present invention;

[0028] Figure 8 a schematic diagram of the structure of the cleaning component of the present invention;

[0029] Figure 9 a schematic diagram of the structure of the linkage component of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Suction device; 2. Chassis; 3. Pressurizing and heating module; 4. Opening; 5. Threaded cylinder; 6. Sputum storage tank; 7. Telescopic member; 8. Support plate; 9. Connecting frame; 10. Sealing cover; 11. Negative pressure tube head; 12. Electric threaded seat; 13. Negative pressure cylinder; 14. Slide bar; 15. Clamping seat; 16. Spring 1; 17. Tank cover; 18. Intake pipe; 19. Exhaust pipe; 20. Annular sealing groove; 21. Annular platform; 22. Annular rubber ring; 23. Top ring; 24. Slide bar frame 1; 25. Lower sliding seat; 26. Spring 2; 27. Slide bar frame 2; 28. Upper sliding seat; 29. Spring 3; 30. Rotating plate; 31. Nozzle; 32. Limiting block; 33. Slideway opening; 34. Top frame; 35. Chute; 36. Slide bar frame 3; 37. Slide plate; 38. Spring 4; 39. Cleaning brush. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached Figure 1 to the attached Figure 9 It is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] As Figures 1-9As shown in the figure, the present invention discloses an auxiliary sputum aspirator for the care of critically ill patients, including a sputum aspirator 1. The front end of the sputum aspirator 1 is connected to a chassis 2 with an opening 4 at the upper end. A pressurization and heating module 3 is installed on one side of the chassis 2. A sputum storage tank 6 is arranged on one side of the chassis 2. A telescopic member 7 is connected inside the chassis 2, and the output end of the telescopic member 7 is connected to a support plate 8. Above the support plate 8, a sealing cover 10 for covering the opening 4 is connected. On one side of the upper end surface of the support plate 8, a negative pressure tube head 11 is installed, and on the other side, a negative pressure cylinder 13 is arranged. A tank cover 17 is slidably connected to the support plate 8, and the tank cover 17 is hermetically clamped to the upper end of the sputum storage tank 6;

[0035] Among them, the sputum aspirator 1 is a device, and the pressurization and heating module 3 is also an existing mature device, which is used to pressurize and heat the inside of the chassis 2 to achieve disinfection and sterilization at high temperature and high pressure.

[0036] A sealing component is arranged on the inner wall of the tank cover 17, and the sealing component is used to seal between the sputum storage tank 6 and the tank cover 17. The bottom of the chassis 2 is connected with a top frame 34 sleeved with the support plate 8. A limiting block 32 in contact with the upper end of the top frame 34 is connected to the sealing cover 10. A cleaning component is arranged inside the top frame 34, and the cleaning component is used to clean the sputum storage tank 6. The upper and lower inner walls of the chassis 2 are also slidably connected with upper sliding seats 28. A nozzle 31 is installed at the lower end of each upper sliding seat 28. A linkage component is also arranged inside the chassis 2, and the linkage component is used to drive the nozzles 31 on both sides to approach each other when the support plate 8 moves downward, so as to spray cleaning disinfectant on the negative pressure cylinder 13 and the negative pressure tube head 11 respectively for cleaning.

[0037] A threaded cylinder 5 is connected to the upper end of the chassis 2. The outer side of the lower end of the sputum storage tank 6 is threadedly sleeved inside the threaded cylinder 5. An electric threaded seat 12 is connected to the upper end of the support plate 8. The outer side of the lower end of the negative pressure cylinder 13 is threadedly sleeved inside the electric threaded seat 12. This facilitates the flexible installation of the sputum storage tank 6 on the upper end surface of the chassis 2, and also facilitates the installation of the negative pressure cylinder 13 on the support plate 8 through the electric threaded seat 12, and can also rotate under the drive of the electric threaded seat 12.

[0038] A connecting frame 9 is connected to the upper end of the support plate 8, and the sealing cover 10 is connected to the upper end of the connecting frame 9. An air inlet pipe 18 and an air outlet pipe 19 are connected to both the upper end of the sputum storage tank 6 and the sealing cover 10. The air inlet pipe 18 on the sputum storage tank 6 is connected with a sputum suction pipe. Hoses are connected between the air outlet pipe 19 on the sputum storage tank 6 and the air inlet pipe 18 on the sealing cover 10, and between the air outlet pipe 19 on the sealing cover 10 and the negative pressure tube head 11. The sputum storage tank 6, the sputum suction pipe and the hoses are usually disposable utensils.

[0039] It facilitates the connection between the convenient sputum storage can 6 and the negative pressure cylinder 13, as well as between the negative pressure cylinder 13 and the negative pressure tube head 11. In this way, with the added negative pressure cylinder 13, when the sputum aspirator 1 sucks the sputum of the patient, through the buffering of the negative pressure cylinder 13, the possibility of sputum entering the interior of the sputum aspirator 1 is significantly avoided, ensuring that the sputum aspirator 1 still has a high cleanliness after multiple uses.

[0040] Embodiment Two:

[0041] As Figures 1-9 shown, the present invention discloses an auxiliary sputum aspirator for the care of critically ill patients. Compared with Embodiment One, the structure of the sealing component is disclosed in this embodiment.

[0042] The sealing component includes a card seat 15, an annular sealing groove 20, an annular platform 21, and an annular rubber ring 22. The card seat 15 is connected to both sides of the sealing cover 10, and the lower end side of the card seat 15 abuts against the upper inner wall of the chassis 2 along the inner edge of the opening 4. The annular sealing groove 20 is opened in the can lid 17 and is hermetically sleeved with the upper end of the negative pressure cylinder 13. The annular platform 21 is connected to the upper end of the inner wall of the negative pressure cylinder 13. The annular rubber ring 22 is connected in the can lid 17, and a top ring 23 that cooperates and abuts against the upper end of the annular platform 21 is connected to the lower end of the annular rubber ring 22. The annular rubber ring 22 fits and abuts against the inner wall of the negative pressure cylinder 13. The annular platform 21, the annular rubber ring 22, and the top ring 23 are all located inside the annular sealing groove 20.

[0043] When the support plate 8 moves upward until one side of the card seat 15 abuts against the upper inner wall of the chassis 2 along the inner edge of the opening 4, at this time, the card seat 15 will pull the can lid 17 closer to the negative pressure cylinder 13 side to achieve sealing with the negative pressure cylinder 13. Moreover, through the sleeving of the annular sealing groove 20 and the upper end of the negative pressure cylinder 13, the area of the sealing sleeve can be increased, improving the sealing performance;

[0044] Furthermore, when the can lid 17 slides closer to the negative pressure cylinder 13, it will also drive the top ring 23 to abut against the upper end of the annular platform 21 on the inner wall of the negative pressure cylinder 13. As a result, the middle part of the annular rubber ring 22 connected between the top ring 23 and the can lid 17 can bulge outward and have an interference fit with the inner wall of the negative pressure cylinder 13, realizing the secondary sealing between the can lid 17 and the negative pressure cylinder 13, and further improving the sealing effect between the negative pressure cylinder 13 and the can lid 17.

[0045] Both sides of the support plate 8 are connected with sliding rods 14. The other side of the lower end of the card seats 15 on both sides is also slidably sleeved on the surface of the sliding rods 14. A first spring 16 sleeved on the surface of the sliding rods 14 is connected between the upper end of the sliding rods 14 and the lower end of the card seats 15. The setting of the first spring 16 enables the can lid 17 to have a basic thrust towards the negative pressure cylinder 13, facilitating the fitting and covering of the upper end of the can lid 17 and the negative pressure cylinder 13.

[0046] Embodiment Three:

[0047] As Figures 1-9 shown, the present invention discloses an auxiliary sputum aspirator for the care of critically ill patients. Compared with Embodiment 2, the structure of the linkage component is disclosed in this embodiment.

[0048] The linkage component includes a lower sliding seat 25 and a rotating plate 30. Two lower sliding seats 25 are provided and are respectively slidably connected to both sides of the lower inner wall of the chassis 2. One end of the rotating plate 30 is rotatably connected to the lower sliding seat 25, and the other end is rotatably connected to the adjacent upper sliding seat 28.

[0049] On both sides of the inner wall of the chassis 2, a second slide bar frame 27 is connected. The upper sliding seat 28 is slidably sleeved on the outside of the second slide bar frame 27. A third spring 29 sleeved on the outside of the second slide bar frame 27 is connected between the upper sliding seat 28 and the inner wall of the chassis 2. On both sides of the bottom of the chassis 2, a first slide bar frame 24 is connected. The lower sliding seat 25 is slidably sleeved on the outside of the first slide bar frame 24. A second spring 26 sleeved on the outside of the first slide bar frame 24 is connected between the lower sliding seat 25 and the bottom of the chassis 2.

[0050] After use, the telescopic member 7 can be used to drive the support plate 8 to move downward until the sealing cover 10 seals the opening 4. During this process, the limiting block 32 connected to the tank cover 17 will abut against the upper end of the top frame 34. Subsequently, as the support plate 8 continues to move downward, the negative pressure cylinder 13 will be separated from the tank cover 17, that is, the clamping seat 15 will slide upward relative to the surface of the slide bar 14 and compress the first spring 16, causing a distance between the negative pressure cylinder 13 and the tank cover 17. As the support plate 8 continues to move downward, its two sides will abut against the two lower sliding seats 25 on both sides, driving the lower sliding seats 25 to slide downward and compress the second spring 26, thereby pulling the rotating plate 30 to rotate, causing the two upper sliding seats 28 on both sides to slide closer to each other and compress the third spring 29. At the same time, it also drives the nozzles 31 on the two upper sliding seats 28 to slide respectively to the directly above the negative pressure cylinder 13 and the negative pressure pipe head 11 to spray cleaning and disinfecting agents on the two to achieve cleaning and disinfection. Then, the chassis 2 can be pressurized and heated through the pressurizing and heating module 3 to sterilize the negative pressure cylinder 13, the tank cover 17 and the negative pressure pipe head 11 under high pressure and high temperature.

[0051] Embodiment 4:

[0052] As Figures 1-9 shown, the present invention discloses an auxiliary sputum aspirator for the care of critically ill patients. Compared with Embodiment 3, the structure of the cleaning component is disclosed in this embodiment.

[0053] The cleaning assembly includes a slide opening 33, a slide groove 35, a slide plate 37, and a cleaning brush 39. The slide opening 33 is opened on the support plate 8, and the support plate 8 is slidably mounted on the outer side of the top frame 34 through the slide opening 33. The slide groove 35 is opened on the side of the top frame 34 close to the negative pressure cylinder 13. The slide plate 37 is trapezoidal and is slidably connected in the slide groove 35, and the slide plate 37 slides in contact with the inner wall of the slide opening 33. The cleaning brush 39 is installed on the slide plate 37 and slides in the slide opening 33.

[0054] The upper and lower inner walls of the slide groove 35 are connected to the slide bar frame 36, and the upper and lower ends of the slide plate 37 are respectively slidably mounted on the outside of the slide bar frame 36. A spring 4 38 mounted on the outside of the slide bar frame 36 is connected between the slide plate 37 and the inner wall of the slide groove 35.

[0055] When the support plate 8 slides down on the surface of the top frame 34 through the slide opening 33, it can first slide in contact with the two ends of the slide plate 37, squeeze the slide plate 37 into the slide groove 35, and compress the spring four 38. After the support plate 8 passes through the slide groove 35, the slide plate 37 bounces up under the action of the spring four 38, and the cleaning brush 39 on it fits against the surface of the negative pressure cylinder 13, and cooperates with the rotation of the electric threaded seat 12 to achieve the cleaning of the surface of the negative pressure cylinder 13.

[0056] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An auxiliary sputum aspirator for the care of critically ill patients, comprising a sputum aspirator (1). The front end of the sputum aspirator (1) is connected to a chassis (2) with an opening (4) at the upper end. A pressurization and heating module (3) is installed on one side of the chassis (2), and a sputum storage tank (6) is arranged on one side of the chassis (2). It is characterized in that, A telescopic member (7) is connected inside the chassis (2), and the output end of the telescopic member (7) is connected to a support plate (8). Above the support plate (8), a sealing cover (10) for covering the opening (4) is connected. On one side of the upper end surface of the support plate (8), a negative pressure pipe head (11) is installed, and on the other side, a negative pressure cylinder (13) is provided. A can cover (17) is slidably connected to the support plate (8), and the can cover (17) is hermetically clamped to the upper end of the sputum storage can (6). A sealing assembly is provided on the inner wall of the can cover (17), and the sealing assembly is used to seal between the sputum storage can (6) and the can cover (17). A top frame (34) sleeved with the support plate (8) is connected to the bottom of the chassis (2). A limit block (32) that abuts against the upper end of the top frame (34) is connected to the sealing cover (10). A cleaning assembly is provided inside the top frame (34), and the cleaning assembly is used to clean the sputum storage can (6). Upper sliding seats (28) are also slidably connected to the inner walls on both sides of the chassis (2). A nozzle (31) is installed at the lower end of each upper sliding seat (28). A linkage assembly is also provided inside the chassis (2), and the linkage assembly is used to drive the nozzles (31) on both sides to approach each other when the support plate (8) moves downward, so as to spray cleaning disinfectant onto the negative pressure cylinder (13) and the negative pressure pipe head (11) respectively for cleaning.

2. The auxiliary sputum aspirator for the care of critically ill patients according to claim 1, wherein, A threaded cylinder (5) is connected to the upper end of the chassis (2). The outer side of the lower end of the sputum storage can (6) is threadedly sleeved inside the threaded cylinder (5). An electric threaded seat (12) is connected to the upper end of the support plate (8). The outer side of the lower end of the negative pressure cylinder (13) is threadedly sleeved inside the electric threaded seat (12).

3. The auxiliary sputum aspirator for the care of critically ill patients according to claim 1, characterized in that, A connecting frame (9) is connected to the upper end of the support plate (8), and the sealing cover (10) is connected to the upper end of the connecting frame (9). An air inlet pipe (18) and an air outlet pipe (19) are connected to both the upper end of the sputum storage can (6) and the sealing cover (10). The air inlet pipe (18) on the sputum storage can (6) is connected to a sputum suction pipe. Hoses are connected between the air outlet pipe (19) on the sputum storage can (6) and the air inlet pipe (18) on the sealing cover (10), and between the air outlet pipe (19) on the sealing cover (10) and the negative pressure pipe head (11).

4. An auxiliary sputum aspirator for the care of critically ill patients according to claim 1, characterized in that, The sealing assembly includes a clamping seat (15), an annular sealing groove (20), an annular platform (21), and an annular rubber ring (22). The clamping seat (15) is connected to both sides of the sealing cover (10), and the lower end of one side of the clamping seat (15) abuts against the upper inner wall of the chassis (2) along the inner edge of the opening (4). The annular sealing groove (20) is opened inside the can cover (17) and is hermetically sleeved with the upper end of the negative pressure cylinder (13). The annular platform (21) is connected to the upper end of the inner wall of the negative pressure cylinder (13). The annular rubber ring (22) is connected inside the can cover (17), and a top ring (23) that cooperates with and abuts against the upper end of the annular platform (21) is connected to the lower end of the annular rubber ring (22). The annular rubber ring (22) is in close contact with the inner wall of the negative pressure cylinder (13).

5. The auxiliary sputum aspirator for the care of critically ill patients according to claim 4, characterized in that, The annular platform (21), the annular rubber ring (22), and the top ring (23) are all inside the annular sealing groove (20).

6. The auxiliary sputum aspirator for critical patient care according to claim 4, characterized in that, Both sides of the said pallet (8) are connected with sliding rods (14), and the other side of the lower end of the clamping seats (15) on both sides is also sleeved on the surface of the sliding rods (14) in a sliding manner. A first spring (16) sleeved on the surface of the sliding rod (14) is connected between the upper end of the sliding rod (14) and the lower end of the clamping seat (15).

7. The auxiliary sputum aspirator for the care of critically ill patients according to claim 1, characterized in that, The said linkage assembly includes a lower sliding seat (25) and a rotating plate (30). There are two lower sliding seats (25), which are respectively connected to the inner walls on both sides of the lower part of the chassis (2) in a sliding manner. One end of the rotating plate (30) is rotatably connected to the lower sliding seat (25), and the other end is rotatably connected to the adjacent upper sliding seat (28).

8. The auxiliary sputum aspirator for the care of critically ill patients according to claim 7, characterized in that, The inner walls on the left and right sides of the said chassis (2) are connected with a second sliding rod frame (27). The upper sliding seat (28) is sleeved on the outside of the second sliding rod frame (27) in a sliding manner. A third spring (29) sleeved on the outside of the second sliding rod frame (27) is connected between the upper sliding seat (28) and the inner wall of the chassis (2). Both sides of the bottom of the chassis (2) are connected with a first sliding rod frame (24). The lower sliding seat (25) is sleeved on the outside of the first sliding rod frame (24) in a sliding manner. A second spring (26) sleeved on the outside of the first sliding rod frame (24) is connected between the lower sliding seat (25) and the bottom of the chassis (2).

9. The auxiliary sputum aspirator for the care of critically ill patients according to claim 1, wherein, The said cleaning assembly includes a slide port (33), a slide groove (35), a slide plate (37), and a cleaning brush (39). The slide port (33) is opened on the pallet (8). The pallet (8) is sleeved on the outer side of the top frame (34) in a sliding manner through the slide port (33). The slide groove (35) is opened on one side of the top frame (34) close to the negative pressure cylinder (13). The slide plate (37) is trapezoidal and is connected to the slide groove (35) in a sliding manner, and the slide plate (37) is in sliding contact with the inner wall of the slide port (33). The cleaning brush (39) is installed on the slide plate (37) and slides in the slide port (33).

10. The auxiliary sputum aspirator for the care of critically ill patients according to claim 9, characterized in that, Both the upper and lower inner walls of the said slide groove (35) are connected with a third sliding rod frame (36). The upper and lower ends of the slide plate (37) are respectively sleeved on the outside of the third sliding rod frame (36) in a sliding manner. A fourth spring (38) sleeved on the outside of the third sliding rod frame (36) is connected between the slide plate (37) and the inner wall of the slide groove (35).

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