An ICU suction device

Abstract

This invention relates to the field of medical equipment technology, specifically an ICU suction device. The invention provides an ICU suction device with anti-suction function. The ICU suction device includes a negative pressure connection component, a sleeve and a connecting tube fixedly connected to the negative pressure connection component. The sleeve is located outside the connecting tube. A T-joint is threadedly and sealed to the side of the sleeve away from the negative pressure connection component. A flushing fluid tube is fixedly connected to the T-joint. A suction tube is slidably connected to the connecting tube. Symmetrically distributed rectangular and strip-shaped through holes are respectively opened on the sides of the connecting tube and the suction tube that are close to each other. A retaining ring is fixedly connected to the connecting tube. This invention effectively prevents negative pressure leakage by connecting the rectangular through holes of the connecting tube and the strip-shaped through holes of the suction tube, thus preventing damage to the patient's airway caused by pulling the suction tube outward during suctioning.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a suction nursing device for ICU use. Background Technology

[0002] ICU, or Intensive Care Unit, houses conscious patients with intact airway reflexes who can expel secretions and other harmful substances through swallowing or coughing. When a patient's level of consciousness decreases (e.g., into a coma), protective airway reflexes disappear, necessitating immediate suctioning. Endotracheal intubation is fundamental for timely and effective suctioning. Many patients with acute exacerbations of COPD or type II respiratory failure, whose condition was initially relatively stable, may experience suffocation due to weakened coughing and sputum buildup in the trachea. In such cases, routine suctioning may be ineffective, making endotracheal intubation-assisted suctioning the most effective approach.

[0003] Current technology generally uses a closed suction catheter for sputum suction. The simplified operation is as follows: First, turn on the negative pressure machine to test the saline solution and check if the negative pressure is effective. Connect the negative pressure tube to the closed suction catheter, insert the suction catheter into the patient's airway, turn on the negative pressure switch, and slowly pull out the suction catheter to suction out the sputum. After suctioning out the sputum, rinse the sputum in the closed suction catheter with saline solution. Then disconnect the negative pressure tube and the suction catheter. The entire suction device is replaced on average every 24 hours.

[0004] When medical staff pull out the suction tube to suction sputum, the suction tube may block the patient's airway. The medical staff may not notice this and continue to pull on the suction tube. This can cause discomfort to the patient or even damage to the patient's airway.

[0005] Based on the above, the present invention proposes an ICU suction nursing device with anti-suction function. Summary of the Invention

[0006] In order to overcome the shortcomings of existing suctioning devices that do not have anti-suction function, the present invention provides an ICU suctioning device with anti-suction function.

[0007] An ICU suction nursing device includes a negative pressure unit, a sleeve and a connecting tube fixedly connected to the negative pressure unit, the sleeve being located outside the connecting tube, a T-joint threadedly sealed to the side of the sleeve away from the negative pressure unit, an irrigation fluid tube fixedly connected to the T-joint, a suction tube slidably connected to the connecting tube, symmetrically distributed rectangular through holes and strip-shaped through holes on the sides of the connecting tube and the suction tube that are close to each other, a fixing ring fixedly connected to the connecting tube, and a first spring connecting the fixing ring and the end of the suction tube.

[0008] Furthermore, it is particularly preferred that the device also includes a first fixing frame, which is fixedly connected to the side of the connecting pipe near the suction tube. The first fixing frame has a slot, and a storage component is slidably installed on the first fixing frame. The storage component has an opening, and a closing component is fitted onto the storage component. Locking blocks are fixedly connected to both sides of the closing component, and symmetrically distributed blocking components are fixedly connected to the closing component. The blocking components are used to block the opening of the storage component, and the locking blocks are engaged with the slot.

[0009] Furthermore, it is particularly preferred that the device also includes symmetrically distributed first fixing blocks, each of which is fixed to the side of the three-way fitting near the suction tube. Friction wheels are connected between the first fixing blocks on the same horizontal plane, and the friction wheels are in frictional contact with the suction tube. A locking wheel is fixed to one side of the rotating shaft of the friction wheel. Symmetrically distributed second fixing blocks are fixed to the side of the three-way fitting near the locking wheel. The second fixing blocks are slidably connected to inclined blocks, and a second spring is connected between the second fixing blocks and the adjacent inclined blocks. The inclined blocks and the locking wheels are in a pressing fit.

[0010] Furthermore, it is particularly preferred that the friction wheel is provided with a concave arc shape that conforms to the outer wall of the suction tube.

[0011] In addition, it is particularly preferred that the device also includes a third fixing frame, which is fixed to the side of the three-way fitting near the suction tube. The side of the suction tube near the third fixing frame is fitted with a rubber component, and a torsion spring connects the third fixing frame and the rubber component.

[0012] Furthermore, it is particularly preferred that the device also includes a second fixing frame, which is fixedly connected to a second fixing block on the lower side. The second fixing frame is rotatably connected to a rocker arm, which is in a press-fit relationship with an adjacent inclined block and a rubber component.

[0013] Furthermore, it is particularly preferred that the device also includes a fixing plate, which is fixed to the suction end of the suction tube near the irrigation fluid tube. The fixing plate is rotatably connected to a porous component, which has evenly distributed round holes for suctioning sputum from the surrounding area. The suction end of the suction tube is fixed to a fourth fixing bracket for blocking part of the round holes, and the fourth fixing bracket is located inside the porous component.

[0014] Furthermore, it is particularly preferred that the device also includes an annular frame, which is fixed to the side of the tee member near the perforated member. The annular frame is slidably connected to circumferentially distributed unblocking blocks, and a third spring is connected between the annular frame and the unblocking blocks.

[0015] Furthermore, it is particularly preferred that the device also includes a connecting tube fixed to the tee fitting, the connecting tube being located between the rubber fitting and the third fixing bracket, the connecting tube having circumferentially distributed nozzles, and the connecting tube being fixed to a concentrator for guiding saline solution.

[0016] Furthermore, it is particularly preferred that the shape of the concentrator is a hollow cone for concentrating and accelerating the water flow.

[0017] 1. This invention connects the rectangular through-hole of the connecting pipe and the strip through-hole of the suction tube to release negative pressure, which can effectively prevent damage to the patient's airway when the suction tube is pulled outward during suctioning. At the same time, the whole process is very short and will not affect the suctioning process.

[0018] 2. This invention allows for manual connection between the rectangular through-hole of the connecting pipe and the strip through-hole of the suction tube. By flushing with rinsing fluid, sputum can be collected for testing. At the same time, the storage component can be quickly disassembled to remove sputum samples.

[0019] 3. The present invention uses friction wheels to clamp the suction tube, which can prevent the suction tube from swinging around inside the tee, making it inconvenient for medical staff to insert the suction tube.

[0020] 4. This invention uses the deceleration effect of the locking wheel and the inclined block to prevent medical staff from using too much force, which could cause the suction tube to hit the patient's airway and cause discomfort and pain. It can also make the insertion speed of the suction tube more stable.

[0021] 5. This invention uses a rubber block to collect sputum from the outer wall of the suction tube, facilitating uniform rinsing of the sputum. The shaking of the inclined block, through the rocker arm, causes the rubber block to twist back and forth, allowing the rubber block to better fit the suction tube and clean the sputum from the outer wall.

[0022] 6. This invention can adapt to patients with different airway sizes by adjusting the number of through holes in the multi-hole component. It can specifically adapt to patients with airways that are too large or too small, thereby enhancing the suctioning effect of the suction catheter to a certain extent.

[0023] 7. This invention uses a dredging block to unclog the through holes of a multi-hole component, preventing sputum from clogging the holes and effectively solving the problem of sputum not being properly flushed away when the through holes are blocked, making it more practical.

[0024] 8. This invention uses the converging effect of the central tube and the circumferentially distributed nozzles of the connecting tube to specifically flush away the sputum accumulated on the outer wall. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the components of the present invention, including the negative pressure component, connecting pipe, and tee fitting.

[0027] Figure 3 This is a three-dimensional structural diagram of the first spring, fixing ring, connecting pipe, and other components of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, including connecting pipes, storage components, and sealing components.

[0029] Figure 5This is a schematic diagram of the three-dimensional structure of the first fixing frame, storage component, and sealing component of the present invention.

[0030] Figure 6 This is a three-dimensional structural diagram of the components of the present invention, such as the locking wheel, friction wheel, and inclined block.

[0031] Figure 7 This is a three-dimensional structural diagram of the components such as the inclined block, rocker, and torsion spring of the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram of the fixing plate, porous component, unblocking block, and other components of the present invention.

[0033] Figure 9 This is a three-dimensional structural diagram of the connecting pipe, rubber parts, tee parts, and other components of the present invention.

[0034] Figure 10 This is a three-dimensional structural diagram of the components of the present invention, including the central pipe, connecting pipe, and rubber parts.

[0035] In the diagram: 101, negative pressure connection component; 102, sleeve; 103, connecting pipe; 104, suction tube; 105, tee fitting; 106, irrigation fluid tube; 107, first spring; 108, retaining ring; 109, rectangular through hole; 110, strip-shaped through hole; 201, first fixing bracket; 2011, slot; 202, storage component; 2021, opening; 203, sealing component; 2031, locking block; 2032, plugging component; 301, first fixing block. 302. Friction wheel; 303. Locking wheel; 304. Inclined block; 305. Second fixing block; 306. Second spring; 401. Second fixing frame; 402. Rocker; 403. Third fixing frame; 404. Torsion spring; 405. Rubber part; 501. Perforated part; 5011. Round hole; 502. Fixing plate; 503. Fourth fixing frame; 504. Ring frame; 505. Unblocking block; 506. Third spring; 601. Connecting pipe; 602. Centralizing pipe. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0037] Example 1: An ICU suction device, such as Figures 1-3As shown, it includes a negative pressure receiving device 101. A sleeve 102 and a connecting pipe 103 are fixedly connected to the right side of the negative pressure receiving device 101. The sleeve 102 is located outside the connecting pipe 103. A tee fitting 105 is threadedly sealed to the right side of the sleeve 102. An irrigation fluid pipe 106 is fixedly connected to the rear of the tee fitting 105. A suction tube 104 is slidably connected to the right side of the connecting pipe 103. A rectangular through hole 109 is symmetrically distributed on the right side wall of the connecting pipe 103. A strip-shaped through hole 110 is symmetrically distributed on the left side wall of the suction tube 104. The rectangular through hole 109 and the strip-shaped through hole 110 are connected. Negative pressure leaks from the rectangular through hole 109 and the strip-shaped through hole 110 to achieve the function of preventing suction. A fixing ring 108 is fixedly connected to the middle of the inner side of the connecting pipe 103. A first spring 107 is connected between the fixing ring 108 and the end of the suction tube 104.

[0038] When medical staff need to perform suctioning on a patient, the right end of the three-way connector 105 is already connected to the patient's artificial airway, and the front end of the three-way connector 105 is already connected to the ventilator. After the medical staff turns on the negative pressure machine and checks that the negative pressure is normal, they connect the negative pressure machine to the negative pressure connection 101, move the suction tube 104 to the right, pass it through the three-way connector 105, and insert it into the patient's airway. The sleeve 102 is folded, and then the negative pressure switch is turned on. By slowly pulling the negative pressure connection 101, the suction tube 104 is moved to the left while suctioning out sputum. The sleeve 102 gradually returns to its original position. When the suction tube 104 is moving to the left and suctioning the patient's airway, continuing to pull the negative pressure connection 101 to the left will move the connecting pipe 103 to the left, stretching the first spring 107, and then the torque... The rectangular through-hole 109 and the strip through-hole 110 are connected. At this time, negative pressure leaks from the rectangular through-hole 109 and the strip through-hole 110. The suction tube 104 loses negative pressure and detaches from the airway at the end that was sucking in the airway. Then, the first spring 107 resets and drives the suction tube 104 to reset. The time from negative pressure leakage to restoration is very short, causing little harm to the patient. At the same time, it can quickly resolve the airway adhesion without other treatment methods. Then, the medical staff continue to perform suctioning. When suctioning is completed, the turntable on the three-way fitting 105 used to block saline is closed. The flushing fluid tube 106 is connected with saline. The negative pressure is maintained and the suction tube 104 is cleaned with saline. The saline will not enter the artificial airway or the ventilator. After flushing, the connection between the negative pressure fitting 101 and the negative pressure tube is disconnected.

[0039] Example 2: Based on Example 1, such as Figure 4 and Figure 5As shown, it also includes a first fixing frame 201, which is fixed to the right side of the connecting pipe 103. The first fixing frame 201 has two slots 2011, and a storage component 202 is slidably installed in the middle of the first fixing frame 201. The storage component 202 has two openings 2021 and is fitted with a sealing component 203. When the sliding connection between the connecting pipe 103 and the suction tube 104 is opened, the first spring 107 is stretched, and sputum flows out from the rectangular through hole 109 and the strip through hole 110 into the interior of the storage component 202 and the sealing component 203. The sputum is stored in the cavity. The upper and lower sides of the sealing member 203 are fixed with locking blocks 2031. The sealing member 203 has symmetrically distributed plugging members 2032 fixed inside. The plugging members 2032 are used to block the opening 2021 of the storage member 202. The locking blocks 2031 are engaged with the locking groove 2011. When the sealing member 203 is rotated in the locking groove 2011, the sealing member 203 rotates around the storage member 202. When the locking blocks 2031 are disengaged from the locking groove 2011, the plugging members 2032 just seal the opening 2021, which facilitates the removal of sputum.

[0040] Since sputum suctioned from a patient's airway is directly sucked away by a negative pressure machine, it is inconvenient to collect sputum for testing. To facilitate sputum testing, we need to collect the sputum suctioned from the airway. When medical staff need to collect sputum for testing, after cleaning the suction tube 104 with saline, when sputum is observed at the sliding connection between the connecting pipe 103 and the suction tube 104, the sliding connection between the connecting pipe 103 and the suction tube 104 is manually opened. The first spring 107 is stretched, and sputum flows out from the rectangular through hole 109 and the strip through hole 110 into the storage component 202 and the sealing component 203. Inside the cavity, release the hand, and the first spring 107 returns to its original position. The rectangular through hole 109 connecting the pipe 103 and the strip through hole 110 of the suction tube 104 are disconnected. After the entire suction nursing device is replaced, we can remove the collected sputum and manually rotate the sealing member 203 in the slot 2011. The sealing member 203 rotates around the storage member 202. When the locking block 2031 is removed from the restriction of the slot 2011, the plug 2032 just seals the opening 2021. Then, we can manually move the sealing member 203 and the storage member 202 together to the right out of the suction tube 104 and take out the sputum inside.

[0041] like Figure 6As shown, it also includes first fixing blocks 301 symmetrically distributed vertically. First fixing blocks 301 are fixedly connected to the four sides (front, back, top, bottom) of the left side of the inner wall of the tee fitting 105. Friction wheels 302 are connected between the two upper first fixing blocks 301 and between the two lower first fixing blocks 301. The friction wheels 302 have an inwardly concave arc shape that conforms to the outer wall of the suction tube 104. The two friction wheels 302 and the inwardly concave arc shape on the sides can better clamp the suction tube 104. The friction wheels 302 are in frictional contact with the outer wall of the suction tube 104. A locking wheel 303 is fixedly connected to the front side of the rotating shaft of 02. The upper and lower sides of the front left side of the three-way connector 105 are symmetrically connected to the second fixing block 305. The second fixing block 305 is slidably connected to the inclined block 304. A second spring 306 is connected between the second fixing block 305 and the adjacent inclined block 304. The inclined block 304 and the locking wheel 303 are pressed together. Under the action of the up and down moving inclined block 304 and the second spring 306, the resistance of the locking wheel 303 and the friction wheel 302 can be increased, effectively reducing the speed at which the suction tube 104 is inserted into the trachea.

[0042] Because the suction catheter 104 needs to be manually inserted into the patient's trachea by medical staff, excessive speed can easily damage the patient's airway, requiring a high level of skill from the medical staff. Therefore, it is necessary to reduce the speed at which the suction catheter 104 is inserted into the patient's trachea to prevent harm caused by excessive speed. When the medical staff inserts the suction catheter 104 into the patient's airway, even a slight force can cause the suction end of the suction catheter 104 to press against the patient's airway, causing discomfort and pain. When the suction catheter 104 enters the patient's airway, the friction of the suction catheter 104 drives the friction wheel 302 to rotate. The two friction wheels 302 and the concave arc shape on the side can better hold the suction catheter 104, preventing it from sticking to the inner wall of the three-way fitting 105 and affecting its entry. The friction wheel 302 drives the locking wheel 303 to rotate, and the locking wheel 303 and the inclined block 304 are pressed together. The upper inclined block 304 moves upward, and the lower... As the inclined block 304 moves downward, the second spring 306 stretches. The elastic force of the second spring 306 is the resistance to the rotation of the locking wheel 303 and the friction wheel 302, which is the resistance to the suction tube 104 entering the patient's airway. This resistance prevents medical staff from accidentally pushing the suction tube 104 into the patient's airway with too much force, thus enhancing the stability of the suction tube 104 when it enters the patient's airway. The second spring 306 resets, causing the inclined block 304 to engage in the groove of the locking wheel 303. The rotation of the locking wheel 303 then drives the inclined block 304 to move back and forth up and down. The principle of pulling the suction tube 104 outward is the same.

[0043] like Figure 7As shown, it also includes a third fixing frame 403. The third fixing frame 403 is connected to the left side of the inside of the three-way fitting 105. The third fixing frame 403 is located to the right of the friction wheel 302. The right side of the suction tube 104 is fitted with a rubber part 405. The rubber part 405 is located between the third fixing frame 403 and the friction wheel 302. A torsion spring 404 is connected between the third fixing frame 403 and the rubber part 405. The second fixing frame 401 is fixed to the lower second fixing block 305. The second fixing frame 401 is rotatably connected to a rocker plate 402. The left end of the rocker plate 402 is pressed against the lower inclined block 304, and the right end of the rocker plate 402 is pressed against the front side of the rubber part 405.

[0044] During suctioning, sputum easily adheres to the outer wall of the suction catheter 104, requiring timely cleaning. Therefore, when the suction end of the suction catheter 104 enters the innermost part of the patient's airway, the location of the sputum is not clearly defined. To completely remove the sputum, the suction end of the suction catheter 104 must be further inside than the sputum's location. This allows for clearing sputum along the airway during the outward pulling process. Consequently, some sputum may adhere to the outer wall of the suction catheter 104, and the exact location of this adhesion cannot be accurately determined. When medical personnel pull the negative pressure unit 101 outward, causing the connecting pipe 103 and suction catheter 104 to move to the left, the rubber component 405 makes circumferential contact with the suction catheter 104. The rubber component 405 pushes all the sputum on the outer wall of the suction catheter 104 towards the suction end of the suction catheter 104. On this side, the position of the sputum on the outer wall is exactly where the saline solution enters the tee 105 from the rinsing tube 106, facilitating the rinsing of the sputum on the outer wall. While pulling the suction tube 104 to the left, the friction wheel 302 and the locking wheel 303 will also rotate. With the action of the second spring 306, the inclined block 304 will move up and down. The up and down movement of the lower inclined block 304 will squeeze the rocker arm 402 to swing up and down. The right end of the rocker arm 402 will squeeze the rubber part 405 and the torsion spring 404 to rotate back and forth, so that the rubber part 405 will continuously twist when pushing the sputum on the outer wall. Considering that the cross-sectional shape of each part of the suction tube 104 is not unique, the extensibility of the rubber block combined with the twisting can make the rubber block better seal and fit the suction tube 104, thereby enhancing the effect of cleaning the sputum on the outer wall of the suction tube 104.

[0045] like Figure 8 As shown, it also includes a fixing plate 502, which is fixed to the right side of the outer wall of the suction tube 104. The fixing plate 502 is rotatably connected to a perforated component 501. The perforated component 501 has evenly distributed round holes 5011, which are used to suction sputum around the perforated component 501. A fourth fixing bracket 503 is fixed to the suction end on the right side of the suction tube 104. The fourth fixing bracket 503 is used to block part of the round holes 5011 and is located inside the perforated component 501.

[0046] Because different patients have different airway tolerance to suction force, adjustments are needed to increase patient comfort during suctioning. Therefore, when installing the suction device, the perforated component 501 can be manually rotated for different patients with different airway sizes. The perforated component 501 has two states: the first is a fully open state of the round hole 5011, and the second is a state where half of the round hole 5011 is covered by the fourth fixing bracket 503. The fully open round hole 5011 has a larger negative pressure suction area than the half-open round hole 5011, but the negative pressure suction is weaker. It is suitable for patients with smaller airway diameters, as it can better suction the surrounding sputum and is less likely to aspirate the airway. The half-open round hole 5011 is more suitable for patients with larger airway diameters, as it can suction the surrounding negative pressure over a greater distance than the fully open round hole 5011.

[0047] like Figure 8 As shown, it also includes an annular frame 504, which is fixed to the left side of the inside of the tee member 105. The annular frame 504 is located on the right side of the perforated member 501. The annular frame 504 is slidably connected to circumferentially distributed unblocking blocks 505, and a third spring 506 is connected between the annular frame 504 and the unblocking blocks 505.

[0048] When suctioning is almost complete, in order to prevent sputum from blocking the round hole 5011 of the porous component 501, when the porous component 501 moves to the left, and the round hole 5011 is on the same horizontal plane as the ring frame 504, the third spring 506 is in a stretched state, which will reset and drive the unblocking block 505 into the round hole 5011 to unblock the hole and prevent sputum from blocking the hole. This is beneficial for the subsequent saline rinsing to better remove sputum. When the porous component 501 continues to move to the left, the porous component 501 squeezes the unblocking block 505 away from the round hole 5011, and the third spring 506 returns to a stretched state.

[0049] like Figure 9 and Figure 10 As shown, it also includes a connecting pipe 601, which is fixed to the left side inside the tee 105. The connecting pipe 601 is located between the rubber part 405 and the third fixing frame 403. The connecting pipe 601 has circumferentially distributed nozzles. A concentrator 602 is fixed to the rear of the connecting pipe 601. The concentrator 602 is shaped as a hollow cone for concentrating and accelerating the water flow. The concentrator 602 is used to guide physiological saline.

[0050] When the suction tube 104 is rinsed with saline, in order to better rinse away the sputum accumulated on the outer wall near the rubber part 405, the nozzles distributed around the circumference of the connecting tube 601 are aimed at the sputum on the outer wall. The saline guided from the rinsing fluid tube 106 is accelerated by the hollow cone inside the concentrator tube 602 to achieve the effect of targeted cleaning of the accumulated sputum on the outer wall. The principle of acceleration is the narrowing effect of the liquid.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ICU suction device, characterized in that, It includes a negative pressure receiving device (101), a sleeve (102) and a connecting pipe (103) fixedly connected to the negative pressure receiving device (101), the sleeve (102) is located outside the connecting pipe (103), a tee (105) is threadedly sealed on the side of the sleeve (102) away from the negative pressure receiving device (101), a flushing fluid pipe (106) is fixedly connected to the tee (105), a suction tube (104) is slidably connected to the connecting pipe (103), a rectangular through hole (109) and a strip through hole (110) are respectively opened on the side of the connecting pipe (103) and the suction tube (104) that are close to each other, and a fixing ring (108) is fixedly connected to the connecting pipe (103), and a first spring (107) is connected between the fixing ring (108) and the end of the suction tube (104). It also includes a first fixing frame (201), which is fixed to the side of the connecting pipe (103) near the suction tube (104). The first fixing frame (201) has a slot (2011). The first fixing frame (201) is slidably installed with a storage component (202). The storage component (202) has an opening (2021). The storage component (202) is fitted with a sealing component (203). The sealing component (203) has locking blocks (2031) fixed to both sides. The sealing component (203) has symmetrically distributed blocking components (2032) fixed to it. The blocking components (2032) are used to block the opening (2021) of the storage component (202). The locking blocks (2031) are engaged with the slot (2011). It also includes symmetrically distributed first fixing blocks (301), each of which is fixed to the side of the three-way fitting (105) near the suction tube (104). Friction wheels (302) are connected between the first fixing blocks (301) on the same horizontal plane. The friction wheels (302) are in frictional contact with the suction tube (104). A locking wheel (303) is fixed to one side of the rotating shaft of the friction wheel (302). Symmetrically distributed second fixing blocks (305) are fixed to the side of the three-way fitting (105) near the locking wheel (303). The second fixing blocks (305) are slidably connected to inclined blocks (304). A second spring (306) is connected between the second fixing blocks (305) and the adjacent inclined blocks (304). The inclined blocks (304) and the locking wheels (303) are pressed together.

2. The ICU suction device according to claim 1, characterized in that, The friction wheel (302) is provided with an inwardly concave arc shape that fits against the outer wall of the suction tube (104).

3. An ICU suction device according to claim 2, characterized in that, It also includes a third fixing frame (403), which is fixed to the side of the three-way fitting (105) near the suction tube (104). The suction tube (104) near the third fixing frame (403) is annularly fitted with a rubber component (405), and a torsion spring (404) connects the third fixing frame (403) and the rubber component (405).

4. An ICU suction device according to claim 3, characterized in that, It also includes a second fixing frame (401), which is fixed to the second fixing block (305) on the lower side. The second fixing frame (401) is rotatably connected to a rocker (402), which is pressed together with the adjacent inclined block (304) and rubber part (405).

5. An ICU suction device according to claim 4, characterized in that, It also includes a fixing plate (502), which is fixed to the suction end of the suction tube (104) near the irrigation fluid tube (106). The fixing plate (502) is rotatably connected to a porous component (501), which has evenly distributed round holes (5011) for suctioning sputum around it. The suction end of the suction tube (104) is fixed to a fourth fixing frame (503) for blocking part of the round holes (5011), which is located inside the porous component (501).

6. An ICU suction device according to claim 5, characterized in that, It also includes a ring frame (504), which is fixed to the side of the tee (105) near the perforated part (501). The ring frame (504) is slidably connected to a circumferentially distributed unblocking block (505), and a third spring (506) is connected between the ring frame (504) and the unblocking block (505).

7. An ICU suction device according to claim 6, characterized in that, It also includes a connecting tube (601), which is fixed to the tee (105). The connecting tube (601) is located between the rubber part (405) and the third fixing frame (403). The connecting tube (601) has circumferentially distributed nozzles and is fixed to a concentrator (602) for guiding saline solution.

8. An ICU suction device according to claim 7, characterized in that, The concentrator (602) is a hollow cone shape used to concentrate and accelerate water flow.

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