Nursing sputum suction device for intensive care unit

Abstract

The invention discloses a nursing sputum suction device for an intensive care unit, and relates to the technical field of medical instruments, the nursing sputum suction device comprises a machine body, the machine body is provided with a handle and an operation panel, the nursing sputum suction device further comprises a placement table, the placement table is provided with a sputum collection tank, a medicine storage tank and a cleaning tank, and the sputum collection tank is used for collecting sputum; the sputum collection tank is used for collecting sputum, the medicine storage tank is used for storing liquid medicine for reducing sputum, the cleaning tank is used for diluting sputum, the sputum collection tank is communicated with a sputum suction pipe, the medicine storage tank is fixedly communicated with a medicine outlet pipe, the cleaning tank is fixedly communicated with a discharge pipe, and the medicine outlet pipe is fixedly communicated with a medicine spraying pipe. The sputum suction device has the advantages that after sputum suction is completed, cleaning liquid can automatically flow in the sputum suction pipe to clean the sputum suction pipe, meanwhile, the cleaning liquid can dilute and disinfect sputum, overall sanitation is guaranteed, sanitation and safety of the next sputum suction operation are guaranteed, and follow-up cleaning of the sputum collection tank is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a nursing sputum suction device for intensive care units. Background Art

[0002] In the clinical nursing process of intensive care units, the nursing sputum suction device is a key medical device to maintain the patency of the patient's respiratory tract, prevent respiratory tract blockage and infection. Through the principle of negative pressure suction, the sputum suction device can effectively remove sputum and secretions in the patient's respiratory tract, ensure the normal operation of the patient's respiratory function, and play an indispensable role in rescuing critically ill patients and postoperative care.

[0003] Currently, the common nursing sputum suction devices in the market mainly consist of a negative pressure suction device, a sputum suction tube, a sputum collection container, etc. When working, the negative pressure suction device generates negative pressure, and the sputum in the patient's respiratory tract is sucked into the sputum collection container through the sputum suction tube.

[0004] However, after a sputum suction operation is completed, a large amount of sputum and secretions will remain in the lumen of the sputum suction tube of the existing nursing sputum suction device. Due to the lack of an effective cleaning function, it is not only easy to breed bacteria, affecting the hygiene and safety of the next sputum suction operation, but also may cause cross-infection, increasing the infection risk of patients. Moreover, after collecting sputum, the sputum collection container often does not have the function of cleaning and diluting the sputum. A large amount of viscous sputum accumulates in the container, which not only increases the difficulty and time cost for medical staff to clean the container, but also easily generates odors and pollutes the ward environment. Therefore, it is urgent to develop a nursing sputum suction device for intensive care units. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a nursing sputum suction device for intensive care units, which solves the problems raised in the above background art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A nursing sputum suction device for intensive care units, including a body, on which there are a handle and an operation panel, and further including:

[0008] A placement table, on which there are a sputum collection tank, a medicine storage tank and a cleaning tank. The sputum collection tank is used for collecting sputum, the medicine storage tank is used for storing phlegm-dissolving medicine solution, and the cleaning tank is used for diluting sputum. The sputum collection tank is communicated with a sputum suction tube, the medicine storage tank is fixedly communicated with a medicine outlet tube, the cleaning tank is fixedly communicated with a discharge tube, the medicine outlet tube is fixedly communicated with a medicine spraying tube, the discharge tube is fixedly communicated with a connecting tube, and both the medicine spraying tube and the connecting tube are fixedly connected with the sputum suction tube;

[0009] A switch switching unit is used to alternately control the switches of the sputum suction tube and the connecting tube. The switch switching unit includes a closing plate I rotatably mounted in the sputum suction tube through a rotating shaft. One end of the connecting tube located inside the sputum suction tube is rotatably mounted with a closing plate II through a round rod. A connecting shaft is mounted on the rotating shaft through a damping bearing, and a delay transmission component is mounted between the connecting shaft and the round rod. A driving component matched with the connecting shaft is mounted on the sputum collection canister.

[0010] Furthermore, a negative pressure seat and a pressure boosting seat communicated with the machine body are fixedly mounted on the placing table. A first connecting pipe is communicated between the negative pressure seat and the sputum collection canister, and a second connecting pipe is communicated between the pressure boosting seat and the medicine storage canister.

[0011] Furthermore, a convex block is fixedly mounted on the side wall of the rotating shaft away from the connecting shaft. A positioning groove matched with the convex block is opened in the sputum suction tube. The cooperation between the positioning groove and the convex block is used to enable the closing plate I to rotate within a range of 180° in the sputum suction tube.

[0012] Furthermore, the delay transmission component is composed of a driving bevel gear and a driven bevel gear. The driving bevel gear is fixedly mounted on the connecting shaft, and the driven bevel gear is fixedly mounted on the round rod. A cavity matched with the driving bevel gear and the driven bevel gear is opened in the sputum suction tube, and a torsion spring is mounted between the cavity and the driving bevel gear. The arc length of the toothed part on the driving bevel gear is one-fourth of the arc length of the toothed part on the driven bevel gear.

[0013] Furthermore, the driving component is composed of a mounting seat, a servo motor, a winding wheel, and a pull rope. The mounting seat is fixedly mounted on the sputum collection canister, the servo motor is fixedly mounted on the mounting seat, the winding wheel is fixedly mounted on the output end of the servo motor, the pull rope is fixedly connected to the winding wheel, and the other end of the pull rope is wound around the connecting shaft.

[0014] Furthermore, an operation panel is fixedly mounted on the side wall of the machine body, and the operation panel is electrically connected to the servo motor.

[0015] Furthermore, the medicine spraying tube is located at the lower end of the sputum suction tube. One end of the connecting tube away from the discharge tube is located inside the sputum suction tube and communicates with the inner wall of the sputum suction tube.

[0016] Furthermore, the sputum suction tube is composed of a support tube, an intermediate tube, and a tube head. The support tube is connected to the sputum collection canister, the tube head is connected to the support tube through the intermediate tube, the connecting tube is connected to the tube head, the closing plate I is located inside the tube head, and the intermediate tube, the medicine spraying tube, and the connecting tube are all flexible tubes.

[0017] Compared with the existing technology, the advantages of the present invention are as follows:

[0018] 1: Through the connecting tube provided at the front end of the sputum suction tube, after sputum suction is completed, the sputum suction tube can be cleaned by the flow of the cleaning liquid inside the sputum suction tube. At the same time, the cleaning liquid can also dilute and disinfect the sputum, ensuring overall hygiene, guaranteeing the hygiene and safety of the next sputum suction operation, and also facilitating the subsequent cleaning of the sputum collection tank.

[0019] 2: Through the design of the switch switching part, during the sputum suction process, the switches of the front end of the sputum suction tube and the connecting tube can be automatically switched, so that the cleaning liquid can automatically enter the sputum suction tube after sputum suction is completed. The operation is carried out continuously, and the cleaning is timely and the cleaning effect is good.

[0020] 3: Through the medicine spraying tube provided at the bottom of the sputum suction tube, when there is viscous sputum in the patient's respiratory tract, the medicine liquid can be sprayed into the respiratory tract to dissolve the viscous sputum, thereby effectively improving the subsequent sputum suction effect.

[0021] 4: Through the cooperation of the convex block and the positioning groove and the setting of the toothed part on the driven bevel gear, when performing sputum suction treatment, it can be ensured that the sputum suction tube is in an open state first, and after sputum suction, the sputum suction tube is automatically closed and the connecting tube is opened at the same time, ensuring that the sputum suction operation and the cleaning process are carried out in an orderly manner and avoiding mutual conflicts.

[0022] In summary, after sputum suction is completed, the present invention can automatically let the cleaning liquid flow through the sputum suction tube to clean the sputum suction tube. At the same time, the cleaning liquid can also dilute and disinfect the sputum, ensuring overall hygiene, guaranteeing the hygiene and safety of the next sputum suction operation, and also facilitating the subsequent cleaning of the sputum collection tank. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a nursing sputum suction device for an intensive care unit proposed by the present invention;

[0024] Figure 2 is Figure 1 a schematic structural diagram after removing the body;

[0025] Figure 3 is Figure 2 a schematic structural diagram after removing the sputum collection tank;

[0026] Figure 4 is Figure 3 a schematic structural diagram of another perspective after removing the placement table;

[0027] Figure 5 is Figure 4 the front view of;

[0028] Figure 6 is Figure 5 a schematic structural diagram of the A-A plane in;

[0029] Figure 7 isFigure 6 Schematic enlarged view of the structure of part a;

[0030] Figure 8 is Figure 6 Schematic enlarged view of the structure of part b;

[0031] Figure 9 is Figure 5 Schematic enlarged view of the structure of part c;

[0032] Figure 10 is Figure 4 Schematic enlarged view of the structure of the first opening and closing plate in the middle;

[0033] Figure 11 is Figure 10 Exploded enlarged view of the structure at the round rod in the middle.

[0034] In the figure: 1 body, 2 handle, 3 operation panel, 4 placement table, 5 negative pressure seat, 6 booster seat, 7 sputum collection tank, 8 connecting pipe 1, 9 sputum suction pipe, 10 medicine storage tank, 11 connecting pipe 2, 12 medicine outlet pipe, 13 medicine spraying pipe, 14 cleaning tank, 15 discharge pipe, 16 connecting pipe, 17 rotating shaft, 18 first opening and closing plate, 19 round rod, 20 second opening and closing plate, 21 connecting shaft, 22 pull rope, 23 mounting seat, 24 servo motor, 25 winding wheel, 26 driving bevel gear, 27 driven bevel gear, 28 cavity, 29 damping bearing, 30 convex block, 31 positioning groove. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, 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 shall fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] Refer to Figure 1 - Figure 2A nursing suction device for an intensive care unit comprises a body 1, a handle 2 and an operation panel 3 provided on the body 1, the operation panel 3 being provided with a pressure display instrument, a control button and a pressure regulating knob, wherein the pressure display instrument is used to display the working pressure of the body 1, the control button is used to control the switch of the body 1, and the pressure regulating knob is used to control the pressure size when the body 1 is working. The handle 2 adopts an arc-shaped non-slip design, and its surface is covered with an elastic silicone layer, which can improve the palm fit when holding and prevent slipping. The pressure regulating knob adopts a 0.1kPa-level fine-tuning accuracy, and cooperates with the real-time pressure curve display on the pressure display instrument to accurately match the suction force for different patients (such as newborns and patients with chronic obstructive pulmonary disease) to reduce the incidence of mucosal damage.

[0038] A placing table 4 is fixedly installed on the side wall of the body 1, and a sputum collecting tank 7 is provided on the placing table 4. The sputum collecting tank 7 is used to collect sputum. The sputum collecting tank 7 is a transparent tank body, which is provided with a sealing cover for easy disassembly and assembly. At the same time, a maximum scale line is provided on the sputum collecting tank 7. When the sputum collected therein is about to reach the maximum scale line, the medical staff should dump the sputum in time and clean the sputum collecting tank 7. A negative pressure seat 5 and a booster seat 6 connected to the body 1 are fixedly installed on the placing table 4. A connecting pipe 8 is connected between the negative pressure seat 5 and the sputum collecting tank 7. A sputum suction tube 9 is connected to the sputum collecting tank 7. A negative pressure machine is provided in the body 1, and the negative pressure machine is connected to the The negative pressure seat 5 is connected, and the negative pressure machine is an existing product. Its working principle and specific structure are not explained here. When the negative pressure machine 1 is working, the negative pressure seat 5 generates negative pressure, and the design of the connecting pipe 8 makes the sputum collecting tank 7 generate negative pressure. At this time, the sputum suction tube 9 can use the negative pressure to extract the sputum in the patient's respiratory tract and make it fall into the sputum collecting tank 7. In addition, a one-way valve flap is built into the connection between the sputum collecting tank 7 and the connecting pipe 8. When the negative pressure machine stops working, it automatically closes to prevent sputum from being sucked back into the negative pressure seat 5 or the inside of the machine body 1, avoiding equipment damage and cross infection. The one-way valve flap is an existing product, and its working principle and specific structure are not explained here.

[0039] Reference Figure 1 - Figure 11 , a nursing sputum suction device for an intensive care unit, further comprising:

[0040] The placement table 4 is also provided with a medicine storage tank 10 and a cleaning tank 14. The medicine storage tank 10 is used to store the phlegm-dissolving liquid medicine, and the phlegm-dissolving liquid medicine is an existing medical drug. The cleaning tank 14 is used to dilute the phlegm. The cleaning tank 14 can be filled with disinfectant water. Removable sealing covers are provided on both the cleaning tank 14 and the medicine storage tank 10. A medicine outlet pipe 12 is fixedly connected to the medicine storage tank 10. A second connecting pipe 11 is connected between the pressurizing seat 6 and the medicine storage tank 10. A spraying pipe 13 is fixedly connected to the medicine outlet pipe 12. A supercharger is also provided inside the machine body 1. The supercharger is connected to the pressurizing seat. The supercharger is an existing product, and its working principle and specific structure will not be elaborated here. When the supercharger operates, it can make the pressurizing seat 6 generate positive pressure. At this time, the pressure in the medicine storage tank 10 increases, and the liquid medicine in the medicine storage tank 10 can be sprayed out through the spraying pipe 13, so that the liquid medicine is sprayed into the patient's respiratory tract to dissolve the viscous phlegm, which is convenient for better collecting the phlegm and improving the sputum suction effect. There are two control buttons on the machine body 1. One is used to control the switch of the negative pressure machine, and the other is used to control the switch of the supercharger.

[0041] Multiple magnetic snap fasteners are provided on the surface of the placement table 4. Metal sheets are embedded at the bottoms of the sputum collection tank 7, the medicine storage tank 10, and the cleaning tank 14, which can achieve quick positioning and installation and prevent sliding. It can be disassembled with one hand during emergency movement.

[0042] A discharge pipe 15 is fixedly connected to the cleaning tank 14. A connecting pipe 16 is fixedly connected to the discharge pipe 15. Both the spraying pipe 13 and the connecting pipe 16 are fixedly connected to the sputum suction tube 9. The spraying pipe 13 is located at the lower end of the sputum suction tube 9. One end of the connecting pipe 16 far from the discharge pipe 15 is located inside the sputum suction tube 9 and communicates with the inner wall of the sputum suction tube 9. The position of the spraying pipe 13 is set to facilitate precise spraying and phlegm-dissolving treatment of the phlegm. The position design of the connecting pipe 16 can use the negative pressure extraction effect to extract the cleaning liquid in the cleaning tank 14 into the sputum suction tube 9 through the connecting pipe 16 when the front end of the sputum suction tube 9 is in a closed state. At this time, the sputum suction tube 9 can be cleaned with the cleaning liquid and the phlegm can be diluted and disinfected, improving the hygiene level of the sputum suction tube 9 and ensuring the hygiene and safety of the next sputum suction operation.

[0043] A switch switching part is used to alternately control the switches of the sputum suction tube 9 and the connecting pipe 16. The switch switching part includes a closing plate 18 rotatably installed in the sputum suction tube 9 through a rotating shaft 17. The rotation of the rotating shaft 17 is used to adjust the state of the closing plate 18 in the sputum suction tube 9. When the closing plate 18 is horizontal to the axis of the sputum suction tube 9, the sputum suction tube 9 is in an open state. On the contrary, when the closing plate 18 is perpendicular to the axis of the sputum suction tube 9, the sputum suction tube 9 is in a closed state;

[0044] One end of the connecting pipe 16 located inside the sputum suction pipe 9 is rotatably installed with a second opening and closing plate 20 through a round rod 19. When the round rod 19 rotates, it is used to control the opening and closing of the connecting pipe 16. When the second opening and closing plate 20 is horizontal to the axial direction of the connecting pipe 16, the connecting pipe 16 is in an open state. On the contrary, when the second opening and closing plate 20 is perpendicular to the axial direction of the connecting pipe 16, the connecting pipe 16 is in a closed state.

[0045] A convex block 30 is fixedly installed on the side wall of one end of the rotating shaft 17 away from the connecting shaft 21. A positioning groove 31 matching with the convex block 30 is formed in the sputum suction pipe 9. The cooperation between the positioning groove 31 and the convex block 30 is used to enable the first opening and closing plate 18 to rotate within a range of 180° in the sputum suction pipe 9. The connecting shaft 21 is installed on the rotating shaft 17 through a damping bearing 29. Due to the design of the damping bearing 29, when the rotating shaft 17 rotates to the maximum distance, the connecting shaft 21 can rotate relative to the rotating shaft 17. When the rotating shaft 17 is within the rotatable range, the rotation of the connecting shaft 21 can drive the rotating shaft 17 to rotate simultaneously.

[0046] A delay transmission assembly is installed between the connecting shaft 21 and the round rod 19. The delay transmission assembly is composed of a driving bevel gear 26 and a driven bevel gear 27. The driving bevel gear 26 is fixedly installed on the connecting shaft 21, and the driven bevel gear 27 is fixedly installed on the round rod 19. A cavity 28 matching with the driving bevel gear 26 and the driven bevel gear 27 is formed in the sputum suction pipe 9. A torsion spring is installed between the cavity 28 and the driving bevel gear 26. The arc length of the toothed part on the driving bevel gear 26 is one-fourth of the arc length of the toothed part on the driven bevel gear 27. The initial included angle between the toothed part on the driving bevel gear 26 along the rotation direction ( Figure 11 the counterclockwise direction of the left view) and the toothed part on the driven bevel gear 27 is 180°. The included angle of the toothed part on the driving bevel gear 26 is 90°. When the connecting shaft 21 rotates, before rotating to 180°, the first opening and closing plate 18 changes from the closed state to the open state and then rotates to the closed state again. After that, the rotation of the connecting shaft 21 causes the second opening and closing plate 20 to be opened. At this time, since the front end of the sputum suction pipe 9 is closed, the negative pressure will extract the cleaning liquid, realizing the self-cleaning of the sputum suction pipe 9 after sputum suction and the dilution and disinfection treatment of the sputum.

[0047] The sputum suction pipe 9 is composed of a support pipe, an intermediate pipe and a pipe head. The support pipe is connected to the sputum collection tank 7. The pipe head is connected to the support pipe through the intermediate pipe. The connecting pipe 16 is connected to the pipe head. The first opening and closing plate 18 is located inside the pipe head. The intermediate pipe, the medicine spraying pipe 13 and the connecting pipe 16 are all flexible pipes.

[0048] A driving component matched with the connecting shaft 21 is installed on the sputum collecting tank 7. The driving component consists of a mounting seat 23, a servo motor 24, a winding wheel 25 and a pulling rope 22. The mounting seat 23 is fixedly installed on the sputum collecting tank 7, the servo motor 24 is fixedly installed on the mounting seat 23, the winding wheel 25 is fixedly installed on the output end of the servo motor 24, the pulling rope 22 is fixedly connected to the winding wheel 25, and the other end of the pulling rope 22 is wound around the connecting shaft 21. When the servo motor 24 rotates forward, the connecting shaft 21 rotates counterclockwise through the pulling rope 22, realizing the switching control of the first opening and closing plate 18 and the second opening and closing plate 20. When the servo motor 24 rotates reversely, the elastic force of the torsion spring makes the connecting shaft 21 rotate reversely, making the first opening and closing plate 18 and the second opening and closing plate 20 reset, and winding the pulling rope 22 around the connecting shaft 21 again. The servo motor 24 can specifically adopt an existing micro servo motor.

[0049] An operation panel 3 is fixedly installed on the side wall of the machine body 1, and the operation panel 3 is electrically connected to the servo motor 24. Specifically, the control button for controlling the negative pressure machine on the operation panel 3 can also be electrically connected to the servo motor 24, and the control parameters can be adjusted. For example, if the single suction time is 10 s, then control the servo motor 24 to drive the connecting shaft 21 to rotate counterclockwise one circle in the first 5 s and drive the connecting shaft 21 to rotate clockwise one circle to reset in the last 5 s. The specific control time is set based on the actual suction time.

[0050] The operation panel 3 is internally provided with a timer, which automatically triggers a buzzer reminder when the single suction time exceeds 15 s, preventing the patient from lacking oxygen due to long-term negative pressure, meeting the requirements of the "ICU Nursing Operation Specification".

[0051] In the present invention, the working principle of a nursing sputum suction device for an intensive care unit is as follows:

[0052] Installation of the device: Installation Figure 1 As shown, complete the installation of the sputum suction tube 9, the first connecting tube 8, the second connecting tube 11, the medicine spraying tube 13 and the connecting tube 16, and ensure the stability of their connections. Then open the machine body 1 and test whether it can work normally. If it can work normally, proceed with the subsequent operations; otherwise, repair and debug the machine body 1.

[0053] Sputum suction operation: Insert the end of the sputum suction tube 9 far away from the sputum collecting tube 7 into the patient's body and make its opening located at the sputum in the patient's respiratory tract. Adjust the negative pressure magnitude by using the pressure regulating knob, and then turn on the control button for controlling the negative pressure machine, so that the sputum suction tube 9 sucks the sputum in the patient's respiratory tract, and the sputum is collected in the sputum collecting tube 7 through the sputum suction tube 9.

[0054] Cleaning and disinfection treatment: After turning on the negative pressure machine, the servo motor 24 runs simultaneously, causing the connecting shaft 21 to rotate. At this time, the first opening and closing plate 18 opens first, enabling the sputum suction tube 9 to suck sputum. Then the first opening and closing plate 18 closes, and the second opening and closing plate 20 opens. At this time, the front section of the sputum suction tube 9 is in a closed state. Therefore, the operation of the negative pressure machine causes the connecting pipe 16 to pump the cleaning liquid in the cleaning tank 14 into the sputum suction tube 9 and through the sputum suction tube 9 into the sputum collection tank 7. The flow of the cleaning liquid in the sputum suction tube 9 can achieve the cleaning and disinfection of the sputum suction tube 9, and at the same time, it can also dilute and disinfect the sputum, improve the hygiene level, ensure the hygiene and safety of the next sputum suction operation, and it is also more convenient to process the sputum in the sputum collection tank 7 subsequently;

[0055] Treatment for viscous sputum: When the sputum in the patient's respiratory tract is too viscous to be sucked out, turn on the booster, and use the pressure to make the phlegm-dissolving liquid medicine in the medicine storage tank 10 spray out from the medicine spraying tube 13 to dissolve the viscous sputum in the patient's respiratory tract. Then turn off the booster and start the negative pressure machine again, and the diluted sputum can be sucked out more easily.

[0056] Further explanation, the above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A nursing sputum suction device for an intensive care unit, comprising a body (1), wherein a handle (2) and an operation panel (3) are provided on the body (1), and it is characterized in that, It also includes: A placement table (4) is provided with a sputum collection can (7), a medicine storage can (10) and a cleaning can (14). The sputum collection can (7) is used for collecting sputum, the medicine storage can (10) is used for storing the phlegm-dissolving liquid medicine, and the cleaning can (14) is used for diluting the sputum. A sputum suction tube (9) is connected to the sputum collection can (7), a medicine outlet tube (12) is fixedly connected to the medicine storage can (10), a discharge tube (15) is fixedly connected to the cleaning can (14), a medicine spraying tube (13) is fixedly connected to the medicine outlet tube (12), a connecting tube (16) is fixedly connected to the discharge tube (15), and both the medicine spraying tube (13) and the connecting tube (16) are fixedly connected to the sputum suction tube (9); A switch switching part is used for alternately controlling the switches of the sputum suction tube (9) and the connecting tube (16). The switch switching part includes a closing plate one (18) rotatably installed in the sputum suction tube (9) through a rotating shaft (17). One end of the connecting tube (16) located in the sputum suction tube (9) is rotatably installed with a closing plate two (20) through a round rod (19). A connecting shaft (21) is installed on the rotating shaft (17) through a damping bearing (29), and a delay transmission component is installed between the connecting shaft (21) and the round rod (19). A driving component matched with the connecting shaft (21) is installed on the sputum collection can (7).

2. The nursing suction device for intensive care unit according to claim 1, wherein A negative pressure seat (5) and a pressure boosting seat (6) communicated with the machine body (1) are fixedly installed on the placement table (4). A first connecting pipe (8) is communicated between the negative pressure seat (5) and the sputum collection can (7), and a second connecting pipe (11) is communicated between the pressure boosting seat (6) and the medicine storage can (10).

3. The nursing sputum suction device for intensive care unit according to claim 1, wherein A convex block (30) is fixedly installed on the side wall of one end of the rotating shaft (17) far away from the connecting shaft (21). A positioning groove (31) matched with the convex block (30) is opened in the sputum suction tube (9). The cooperation between the positioning groove (31) and the convex block (30) is used to make the closing plate one (18) rotate within a range of 180° in the sputum suction tube (9).

4. A nursing sputum suction device for an intensive care unit according to claim 1, characterized in that, The delay transmission component is composed of a driving bevel gear (26) and a driven bevel gear (27). The driving bevel gear (26) is fixedly installed on the connecting shaft (21), the driven bevel gear (27) is fixedly installed on the round rod (19). A cavity (28) matched with the driving bevel gear (26) and the driven bevel gear (27) is opened in the sputum suction tube (9), and a torsion spring is installed between the cavity (28) and the driving bevel gear (26). The arc length of the toothed part on the driving bevel gear (26) is one-fourth of the arc length of the toothed part on the driven bevel gear (27).

5. The nursing sputum suction device for an intensive care unit according to claim 1, wherein, The driving assembly consists of a mounting base (23), a servo motor (24), a winding wheel (25), and a pulling rope (22). The mounting base (23) is fixedly installed on the sputum collection can (7). The servo motor (24) is fixedly installed on the mounting base (23). The winding wheel (25) is fixedly installed on the output end of the servo motor (24). The pulling rope (22) is fixedly connected to the winding wheel (25), and the other end of the pulling rope (22) is wound around the connecting shaft (21).

6. The nursing suction device for the intensive care unit according to claim 5, wherein, An operation panel (3) is fixedly installed on the side wall of the body (1), and the operation panel (3) is electrically connected to the servo motor (24).

7. A nursing suction device for an intensive care unit according to claim 1, characterized in that, The medicine spraying pipe (13) is located at the lower end of the sputum suction pipe (9). One end of the connecting pipe (16) away from the discharge pipe (15) is located inside the sputum suction pipe (9) and communicates with the inner wall of the sputum suction pipe (9).

8. A nursing sputum suction device for an intensive care unit according to claim 1, wherein, The sputum suction pipe (9) consists of a support pipe, an intermediate pipe, and a pipe head. The support pipe is connected to the sputum collection can (7). The pipe head is connected to the support pipe through the intermediate pipe. The connecting pipe (16) is connected to the pipe head. The first opening and closing plate (18) is located inside the pipe head. The intermediate pipe, the medicine spraying pipe (13), and the connecting pipe (16) are all flexible pipes.

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