Sputum excretion device for critical patient in surgical department

Abstract

The invention discloses a surgical critical patient sputum excretion device, and relates to the technical field of medical instruments, the surgical critical patient sputum excretion device comprises a host, a connecting line and a rapping hammer, the connecting line is electrically connected with the host, the rapping hammer is fixedly connected with one end, away from the host, of the connecting line, and the displacement mechanism is arranged at one end, away from the host, of the connecting line. The displacement mechanism comprises a second connecting frame sleeving the end, away from the main machine, of the connecting wire, a power transmission belt is fixedly connected to the end, away from the rapping hammer, of the second connecting frame, a supporting frame is arranged on the inner ring of the power transmission belt, a rubber gasket is fixedly connected to the inner ring of the supporting frame, and a position limiting block is fixedly connected to the outer ring of the supporting frame; a first connecting frame is fixedly connected to the surface of the second connecting frame, a motor is fixedly connected to the end, away from the rapping hammer, of the first connecting frame, and the height of the rapping hammer can be limited through a rubber gasket so that the problem that the using effect and using comfort of the sputum excretion device are insufficient can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a sputum drainage device for critically ill surgical patients. Background Art

[0002] Critically ill surgical patients often have increased respiratory tract secretions that are difficult to expel on their own due to reasons such as impaired consciousness, weak cough, or long-term bed rest. If these secretions accumulate in the respiratory tract, they will not only affect the patient's respiratory function but may also lead to serious consequences such as asphyxiation. Using a sputum drainage device can timely remove respiratory tract secretions, keep the respiratory tract unobstructed, and ensure that the patient can breathe smoothly.

[0003] A sputum drainage device uses the principles of physical vibration and percussion. By a mechanical device, vibration and percussion forces are generated and act on the patient's chest and back, making the sputum loose and easy to cough out. This sputum drainage method can reduce the accumulation of sputum in the lungs, avoid the reproduction of bacteria in the lungs, weaken lung inflammation, and at the same time accelerate the discharge of secretions from the respiratory tract through vibration and percussion, reduce airway resistance, and maintain normal ventilation of the lungs.

[0004] When using a sputum drainage device for sputum drainage treatment, medical staff need to hold a percussion hammer against the patient's chest and back, and then the percussion hammer vibrates. The vibration is transmitted to the patient through the percussion hammer to achieve an indirect percussion effect on the lungs. To ensure the treatment effect, during the percussion process, medical staff need to manually control the percussion hammer to move up and down reciprocally along the patient's chest and back. However, it is difficult for medical staff to achieve uniformity in controlling the percussion force and moving speed. The non-uniformity of the force may cause excessive force on local tissues, causing discomfort or pain to the patient, while too little force may not be sufficient to effectively loosen the sputum, and the non-uniformity of the speed may affect the percussion frequency and rhythm, thereby affecting the effective discharge of sputum. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a sputum drainage device for critically ill surgical patients, and a rubber gasket can be used to limit the height of the percussion hammer to solve the problems of insufficient use effect and comfort of the sputum drainage device.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A sputum drainage device for critically ill surgical patients, comprising a main unit, a connecting wire, and a percussion hammer. The connecting wire is electrically connected to the main unit, and the percussion hammer is fixedly connected to one end of the connecting wire away from the main unit. A displacement mechanism is provided at one end of the connecting wire away from the main unit. The displacement mechanism includes a second connecting frame sleeved on one end of the connecting wire away from the main unit. One end of the second connecting frame away from the percussion hammer is fixedly connected with a power transmission belt. An inner ring of the power transmission belt is provided with a support frame. An inner ring of the support frame is fixedly connected with a rubber gasket. An outer ring of the support frame is fixedly connected with a position limiting block. A first connecting frame is fixedly connected to a surface of the second connecting frame. One end of the first connecting frame away from the percussion hammer is fixedly connected with a motor. An output shaft of the motor is fixedly connected with a driving wheel. The driving wheel abuts against a surface of the support frame.

[0008] Further, the number of the position limiting blocks is multiple and they are grouped in pairs. A cross-sectional shape of the position limiting block is "L", and a cross-sectional shape of the power transmission belt is "convex". The power transmission belt is slidably connected between two of the position limiting blocks.

[0009] Further, a bearing is provided inside one end of the first connecting frame away from the motor. An outer ring of the bearing is fixedly connected with the first connecting frame, and an inner ring of the bearing is fixedly connected with the connecting wire.

[0010] Further, a first strap and a second strap are respectively fixedly connected to left and right sides of the rubber gasket. The number of both the first strap and the second strap is two. Magic tape male stickers and magic tape female stickers are respectively sewn by needlework at ends of the first strap and the second strap close to each other.

[0011] Further, a side-lying assisting mechanism is provided at one end of the second strap away from the rubber gasket. The side-lying assisting mechanism includes a support pad fixedly connected to one end of the second strap away from the rubber gasket.

[0012] Further, an air charging tube is communicated with a side surface of the support pad. One end of the air charging tube away from the support pad is communicated with an air charging cylinder. A push plate is provided inside a longitudinal arm end of the air charging cylinder. A pushing arm is fixedly connected to a lower surface of the push plate. One end of the pushing arm away from the push plate is rotatably connected with a power transmission arm. One end of the power transmission arm away from the pushing arm is rotatably connected with a swing arm. A rotating shaft is fixedly connected to one end of the swing arm away from the power transmission arm. A rocker is fixedly connected to a rear end of the rotating shaft. A front end of the rotating shaft is rotatably connected with a second bracket. A first bracket is fixedly connected between the second bracket and the air charging cylinder.

[0013] Further, a through hole is formed in a surface of the push plate. A gas blocking block is provided inside the through hole. An air transmission hole is formed in the gas blocking block.

[0014] Furthermore, a blocking block is fixedly connected inside the lateral arm end of the inflator, a blocking ball is arranged inside the lateral arm end of the inflator, and an intercepting frame is fixedly connected to the right end inside the inflator.

[0015] Furthermore, one end of the second bracket away from the swing arm is fixedly connected with an upper connecting plate. A screw rod is inserted into the inside of the end of the upper connecting plate away from the second bracket in a threaded manner. One end of the screw rod away from the swing arm is rotatably connected with a lower connecting plate, and clamping plates are fixedly connected to the front ends of both the lower connecting plate and the upper connecting plate.

[0016] Furthermore, a guiding frame is fixedly connected to the surface of the lower connecting plate close to the upper connecting plate, and the guiding frame is inserted through the inside of the upper connecting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this solution, the rubber gasket is used to limit the height of the percussion hammer, avoiding the situation that the local tissue is overstressed due to the too-close distance of the percussion hammer, causing discomfort or pain to the patient, or the too-far distance resulting in too-small force and being insufficient to effectively loosen the sputum, thereby improving the use effect and comfort of the sputum drainage device.

[0018] (2) In this solution, the motor drives the driving wheel to rotate, enabling the percussion hammer to move along a preset path. During the movement process, the power provided by the motor ensures that the percussion hammer can move at a constant speed and a predetermined trajectory, guaranteeing the accuracy of the percussion frequency and rhythm, and further improving the use effect and comfort of the sputum drainage device.

[0019] (3) When performing sputum drainage operations on critically ill patients, due to their serious condition and limited mobility, it is difficult for patients to maintain a lateral lying position for a long time. Therefore, the support pad is inflated to support the body, which can effectively maintain the lateral lying position of the patient, ensuring that the sputum drainage device can operate smoothly and further enhancing the comfort of the patient during use.

[0020] (4) Before inflating the support pad in this solution, the two clamping plates need to be clamped to the edge of the hospital bed first to ensure its stability. Subsequently, when shaking the rocker for inflation, since the clamping plates are firmly installed, medical staff do not need to hold them by hand, making the inflation process simpler and faster. In addition, the height of the bed edge is moderate, facilitating the shaking operation by medical staff, improving the convenience of use, and avoiding direct contact with the ground, effectively maintaining the cleanliness during the entire sputum drainage process, ensuring the sterility of medical operations and the safety of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2Structural schematic diagram of the rubber washer of the present invention; Figure 3 Structural schematic diagram of the support frame of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of part A in Figure 5 Structural schematic diagram of the inflator of the present invention; Figure 6 Internal structural schematic diagram of the inflator of the present invention; Figure 7 Structural schematic diagram of the push plate and the plugging block of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of part B in Figure 9 Structural schematic diagram of the clamping plate part of the present invention.

[0022] Explanation of the reference numerals in the figure: 1. Main body; 2. Connecting wire; 3. Percussion hammer; 401. Rubber washer; 402. Support frame; 403. First strap; 404. Second strap; 405. First connecting frame; 406. Bearing; 407. Second connecting frame; 408. Power transmission belt; 409. Position limiting block; 410. Motor; 411. Driving wheel; 501. Support pad; 502. Inflation tube; 503. Inflator; 504. First bracket; 505. Second bracket; 506. Pushing arm; 507. Power transmission arm; 508. Swing arm; 509. Rocker; 510. Rotating shaft; 511. Screw; 512. Push plate; 513. Plugging block; 514. Intercepting frame; 515. Plugging ball; 516. Air blocking block; 517. Air outlet hole; 518. Through hole; 519. Clamping plate; 520. Lower connecting plate; 521. Upper connecting plate; 522. Guide frame. Detailed implementation manners

[0023] 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.

[0024] Please refer to Figures 1 - 4, A sputum drainage device for critically ill surgical patients, comprising a main unit 1, a connecting wire 2, and a percussion hammer 3. The connecting wire 2 is electrically connected to the main unit 1, and the percussion hammer 3 is fixedly connected to one end of the connecting wire 2 away from the main unit 1. By vibrating the percussion hammer 3, percussion on the patient's chest and back can be achieved. A displacement mechanism is provided at one end of the connecting wire 2 away from the main unit 1. The displacement mechanism includes a second connecting frame 407 sleeved on one end of the connecting wire 2 away from the main unit 1. One end of the second connecting frame 407 away from the percussion hammer 3 is fixedly connected with a power transmission belt 408. An inner ring of the power transmission belt 408 is provided with a support frame 402. An inner ring of the support frame 402 is fixedly connected with a rubber washer 401, and the height of the percussion hammer 3 can be restricted by the rubber washer 401.

[0025] Among them, an outer ring of the support frame 402 is fixedly connected with a position limiting block 409. A surface of the second connecting frame 407 is fixedly connected with a first connecting frame 405. One end of the first connecting frame 405 away from the percussion hammer 3 is fixedly connected with a motor 410. By the motor 410, a driving wheel 411 can be driven to rotate. An output shaft of the motor 410 is fixedly connected with the driving wheel 411. When the driving wheel 411 rolls, the percussion hammer 3 can be driven to move along the track of the support frame 402. The driving wheel 411 abuts against the surface of the support frame 402. The number of the position limiting blocks 409 is multiple and they are grouped in pairs. A cross-sectional shape of the position limiting block 409 is "L" shaped. A cross-sectional shape of the power transmission belt 408 is "convex" shaped. The position limiting block 409 can restrict the shape of the power transmission belt 408, so that a moving track of the power transmission belt 408 always surrounds the support frame 402. The power transmission belt 408 is slidably connected between the two position limiting blocks 409.

[0026] Among them, a bearing 406 is arranged inside one end of the first connecting frame 405 away from the motor 410. By the bearing 406, the situation that the connecting wire 2 curls due to the fixation of the percussion hammer 3 can be avoided. An outer ring of the bearing 406 is fixedly connected with the first connecting frame 405, and an inner ring of the bearing 406 is fixedly connected with the connecting wire 2. On both left and right sides of the rubber washer 401, a first strap 403 and a second strap 404 are respectively fixedly connected. The number of both the first strap 403 and the second strap 404 is two. The first strap 403 and the second strap 404 can fix the rubber washer 401 on the patient. One end of the first strap 403 and the second strap 404 close to each other are respectively sewn with a magic tape male sticker and a magic tape female sticker. The first strap 403 and the second strap 404 can be bound through the magic tape male sticker and the magic tape female sticker.

[0027] By adopting the above technical solution, when using the sputum drainage device to drain sputum from a patient, the patient is placed in a lateral position. Then, the rubber gasket 401 is arranged on one side of the patient's chest and back, and the first strap 403 and the second strap 404 are tied to the patient through the hook and loop fastener to fix the position of the rubber gasket 401. At this time, the percussion hammer 3 can be vibrated to perform percussion on the patient's chest and back. During the process of percussion sputum drainage, the motor 410 is started, and the driving wheel 411 is driven to rotate by the motor 410. Since the driving wheel 411 is attached to the surface of the support frame 402, the driving wheel 411 can roll on the surface of the support frame 402, and the position limiting block 409 limits the shape of the power transmission belt 408, so that the moving track of the power transmission belt 408 always surrounds the support frame 402. Therefore, when the driving wheel 411 rolls, it can drive the percussion hammer 3 to move along the track of the support frame 402, so that the percussion hammer 3 realizes uniform and stable distance control while moving along the predetermined track, improving the use effect and comfort of the sputum drainage device.

[0028] As Figures 5 - 9 shown, the lateral position assisting mechanism is arranged at the end of the second strap 404 away from the rubber gasket 401. The lateral position assisting mechanism includes a support pad 501 fixedly connected to the end of the second strap 404 away from the rubber gasket 401. After the support pad 501 is inflated, it can support the patient's body to keep the patient in a lateral position. An inflatable tube 502 is communicated with the side surface of the support pad 501, and one end of the inflatable tube 502 away from the support pad 501 is communicated with an inflator 503. A push plate 512 is arranged inside the longitudinal arm end of the inflator 503.

[0029] Wherein, a push arm 506 is fixedly connected to the lower surface of the push plate 512. One end of the push arm 506 away from the push plate 512 is rotatably connected to a power transmission arm 507. One end of the power transmission arm 507 away from the push arm 506 is rotatably connected to a swing arm 508. A rotating shaft 510 is fixedly connected to the end of the swing arm 508 away from the power transmission arm 507. A rocker 509 is fixedly connected to the rear end of the rotating shaft 510. The front end of the rotating shaft 510 is rotatably connected to a second bracket 505. A first bracket 504 is fixedly connected between the second bracket 505 and the inflator 503.

[0030] Among them, through holes 518 are formed on the surface of the push plate 512, a gas blocking block 516 is arranged inside the through holes 518, an air delivery hole 517 is formed inside the gas blocking block 516, and the gas blocking block 516 can prevent air from flowing out during the movement of the push plate 512 outwards through the cooperation of the air delivery hole 517. A blocking block 513 is fixedly connected inside the transverse arm end of the air inflation cylinder 503, a blocking ball 515 is arranged inside the transverse arm end of the air inflation cylinder 503, and the blocking ball 515 can prevent the air inside the support pad 501 from flowing out without affecting the air inflow. An intercepting frame 514 is fixedly connected to the right end inside the air inflation cylinder 503, and the intercepting frame 514 can prevent the blocking ball 515 from falling into the support pad 501.

[0031] Among them, one end of the second bracket 505 far from the swing arm 508 is fixedly connected with an upper connecting plate 521. A screw rod 511 is threadedly inserted inside the end of the upper connecting plate 521 far from the second bracket 505. The screw rod 511 can drive two clamping plates 519 to firmly clamp on the edge of the bed. One end of the screw rod 511 far from the swing arm 508 is rotatably connected with a lower connecting plate 520. Clamping plates 519 are fixedly connected to the front ends of both the lower connecting plate 520 and the upper connecting plate 521. A guiding frame 522 is fixedly connected to the surface of the lower connecting plate 520 close to the upper connecting plate 521, and the guiding frame 522 penetrates through the upper connecting plate 521.

[0032] By adopting the above technical solution, when using the sputum drainage device to perform sputum drainage on a patient, due to the relatively serious condition of the critically ill patient and the restricted behavior, it is difficult for the patient to always maintain a lateral lying position. Therefore, when performing sputum drainage on the patient, let the patient lie prone. At this time, the support pad 501 is pressed under the patient's body. Then, by rocking the rocker 509, the swing arm 508 is driven to rotate. As the swing arm 508 rotates, the power transmission arm 507 can be driven to swing and reciprocate at the same time, thereby driving the push arm 506 and the push plate 512 to reciprocate inside the air inflation cylinder 503. When the push plate 512 moves towards the outside of the air inflation cylinder 503, air enters the inside of the air inflation cylinder 503, driving the gas blocking block 516 to move upwards, exposing the air delivery hole 517 in the through hole 518, so that air can enter the inside of the air inflation cylinder 503. When the push plate 512 moves towards the inside of the air inflation cylinder 503, the air flow drives the gas blocking block 516 to move downwards, making the air delivery hole 517 no longer communicate with the through hole 518. The air inside the air inflation cylinder 503 cannot flow out and can only enter the support pad 501 with the push of the push plate 512. Repeating this process can inflate the support pad 501. Since the support pad 501 is in the shape of a right triangle with one end high and one end low after being inflated, after the support pad 501 is inflated, it can support the patient's body and keep the patient in a lateral lying position, further improving the use effect of the sputum drainage device and the comfort of the patient.

[0033] Before inflating the support pad 501, position the two clamping plates 519 above and below the edge of the hospital bed respectively. Then rotate the screw rod 511, causing the screw rod 511 to drive the upper clamping plate 519 towards the lower clamping plate 519, thereby firmly clamping the two clamping plates 519 on the bed edge. In this way, when rocking the rocker 509, there is no need to hold it by hand, making the inflation operation more convenient. Moreover, it is fixed at a suitable height on the bed edge, making it even more convenient to perform the rocking operation, improving the convenience for medical staff to use, and not contacting the ground, ensuring the hygiene condition during the entire sputum drainage process.

[0034] During the process of the push plate 512 moving towards the outside of the air cylinder 503 and allowing air to enter the air cylinder 503, the air in the support pad 501 will also flow into the air cylinder 503. At this time, the airflow flowing out of the support pad 501 will drive the blocking ball 515 to move and block the blocking block 513, preventing air from flowing out of the support pad 501 again. When air enters the support pad 501, the airflow can push the blocking ball 515 open, allowing air to smoothly enter the support pad 501, avoiding the patient's body pressing on the support pad 501, resulting in the air in the support pad 501 flowing out and unable to achieve the support effect.

[0035] Usage method: When using the sputum drainage device to drain sputum from a patient, place the patient in a lateral position. Then, set the rubber gasket 401 on one side of the patient's chest and back, and tie the first strap 403 and the second strap 404 to the patient through the hook and loop fastener.

[0036] Then make the patient lie prone and press the support pad 501 under the patient's body.

[0037] Position the two clamping plates 519 above and below the edge of the hospital bed respectively, and then make the screw rod 511 drive the two clamping plates 519 to clamp on the bed edge.

[0038] Drive the swing arm 508 to rotate by rocking the rocker 509. As the swing arm 508 rotates, it can drive the power transmission arm 507 to swing and reciprocate at the same time, thereby driving the push arm 506 and the push plate 512 to reciprocate inside the air cylinder 503, allowing airflow to enter the support pad 501, and thus inflating the support pad 501. After the support pad 501 is fully inflated, it supports the patient's body.

[0039] Then make the percussion hammer 3 vibrate to achieve percussion on the patient's chest and back, and drive the drive wheel 411 to rotate through the motor 410. When the drive wheel 411 rolls, it drives the percussion hammer 3 to move along the trajectory of the support frame 402, causing the percussion hammer 3 to move along the predetermined trajectory.

[0040] As described above, it is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A sputum drainage device for critically ill surgical patients, comprising a main unit (1), a connecting wire (2) and a percussion hammer (3), wherein the connecting wire (2) is electrically connected to the main unit (1), and the percussion hammer (3) is fixedly connected to one end of the connecting wire (2) away from the main unit (1), and is characterized in that: Displacement mechanism, the displacement mechanism is arranged at one end of the connection line (2) far from the main machine (1). The displacement mechanism includes a second connecting frame (407) sleeved on one end of the connection line (2) far from the main machine (1). One end of the second connecting frame (407) far from the percussion hammer (3) is fixedly connected with a power transmission belt (408). The inner ring of the power transmission belt (408) is provided with a support frame (402). The inner ring of the support frame (402) is fixedly connected with a rubber gasket (401). The outer ring of the support frame (402) is fixedly connected with a position limiting block (409). The surface of the second connecting frame (407) is fixedly connected with a first connecting frame (405). One end of the first connecting frame (405) far from the percussion hammer (3) is fixedly connected with a motor (410). The output shaft of the motor (410) is fixedly connected with a driving wheel (411). The driving wheel (411) abuts against the surface of the support frame (402).

2. The sputum drainage device for critically ill surgical patients according to claim 1, wherein: The number of the position limiting blocks (409) is multiple and they are grouped in pairs. The cross-sectional shape of the position limiting block (409) is "L" shaped. The cross-sectional shape of the power transmission belt (408) is "convex" shaped. The power transmission belt (408) is slidably connected between two position limiting blocks (409).

3. The sputum drainage device for critically ill surgical patients according to claim 1, characterized in that: The inside of one end of the first connecting frame (405) far from the motor (410) is provided with a bearing (406). The outer ring of the bearing (406) is fixedly connected with the first connecting frame (405). The inner ring of the bearing (406) is fixedly connected with the connection line (2).

4. The sputum drainage device for surgical critical patients according to claim 1, wherein: The left and right sides of the rubber gasket (401) are respectively fixedly connected with a first strap (403) and a second strap (404). The number of both the first strap (403) and the second strap (404) is two. The ends of the first strap (403) and the second strap (404) close to each other are respectively sewn with a magic tape male patch and a magic tape female patch by sewing thread.

5. A sputum drainage device for critically ill surgical patients according to claim 1, characterized in that: Lateral lying auxiliary mechanism, the lateral lying auxiliary mechanism is arranged at one end of the second strap (404) far from the rubber gasket (401). The lateral lying auxiliary mechanism includes a support pad (501) fixedly connected with one end of the second strap (404) far from the rubber gasket (401).

6. The sputum drainage device for surgical critically ill patients according to claim 5, characterized in that: The side of the support pad (501) is connected to an inflatable tube (502). One end of the inflatable tube (502) away from the support pad (501) is connected to an inflator (503). Inside the longitudinal arm end of the inflator (503), there is a push plate (512). The lower surface of the push plate (512) is fixedly connected to a push arm (506). One end of the push arm (506) away from the push plate (512) is rotatably connected to a power transmission arm (507). One end of the power transmission arm (507) away from the push arm (506) is rotatably connected to a swing arm (508). One end of the swing arm (508) away from the power transmission arm (507) is fixedly connected to a rotating shaft (510). The rear end of the rotating shaft (510) is fixedly connected to a rocker (509). The front end of the rotating shaft (510) is rotatably connected to a second bracket (505). A first bracket (504) is fixedly connected between the second bracket (505) and the inflator (503).

7. The sputum drainage device for surgical critical patients according to claim 6, characterized in that: The surface of the push plate (512) is provided with a through hole (518). Inside the through hole (518), there is a gas-blocking block (516). Inside the gas-blocking block (516), there is an air delivery hole (517).

8. The sputum drainage device for surgical critical patients according to claim 6, characterized in that: Inside the transverse arm end of the inflator (503), there is a blocking block (513) fixedly connected. Inside the transverse arm end of the inflator (503), there is a blocking ball (515). Inside the right end of the inflator (503), there is an intercepting frame (514) fixedly connected.

9. The sputum drainage device for surgical critical patients according to claim 6, characterized in that: One end of the second bracket (505) away from the swing arm (508) is fixedly connected to an upper connecting plate (521). Inside the end of the upper connecting plate (521) away from the second bracket (505), a screw rod (511) is threadedly inserted. One end of the screw rod (511) away from the swing arm (508) is rotatably connected to a lower connecting plate (520). Clamping plates (519) are fixedly connected to the front ends of both the lower connecting plate (520) and the upper connecting plate (521).

10. The sputum drainage device for critically ill surgical patients according to claim 9, characterized in that: One side of the lower connecting plate (520) close to the upper connecting plate (521) is fixedly connected to a guiding frame (522). The guiding frame (522) is inserted through the inside of the upper connecting plate (521).

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