Trachea cannula with secretion collecting function

Abstract

The invention provides a trachea cannula with a secretion collection function, and relates to the technical field of medical instruments, the trachea cannula comprises a trachea cannula outer tube, a trachea cannula fixing plate is fixedly connected to the upper end of the trachea cannula outer tube, an inner tube screw cap is tightly and rotatably connected to the upper portion of the trachea cannula fixing plate, and a trachea cannula inner tube is tightly and rotatably connected to the interior of the inner tube screw cap; the tracheostomy tube is provided with a special cleaning structure, when the tracheostomy tube is cleaned, the sputum excretion device connecting tube can be connected with the sputum excretion tube connecting tube under the condition that the tracheostomy tube is not detached, the cleaning difficulty of the tube is reduced, secreta are collected under the condition that the inner tube is not detached, the inner tube can be prevented from being polluted, and the tracheostomy tube is convenient to clean. According to the tracheostomy cannula, the safety and convenience of cannula cleaning are improved, and the problems that when a traditional tracheostomy cannula is cleaned, an inner cannula needs to be detached, professional medical staff or family members and accompanying personnel skilled in operation steps need to operate, the operation difficulty is large, and the illness state is aggravated due to infection easily caused by misoperation are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an endotracheal intubation with a secretion collection function. Background Art

[0002] Tracheostomy cannulas are usually used for patients who require long-term mechanical ventilation. It creates a small incision in the patient's neck trachea through surgery and inserts a special endotracheal tube to establish an artificial airway, ensuring that the patient can breathe smoothly, preventing airway blockage, facilitating sputum suction and drug administration, and also facilitating connection to a ventilator for assisted breathing. Since the tracheostomy cannula is located inside the trachea, tracheal secretions will adhere to the tube body, so the inside of the tracheostomy cannula needs to be cleaned regularly.

[0003] Traditional tracheostomy cannulas have a double-layer structure. When cleaning, the inner tube needs to be disassembled, and professional medical staff or family members and caregivers who are proficient in the operation steps are required to operate. The operation difficulty is high, and improper operation is likely to cause infection and aggravate the condition. Therefore, patients cannot clean the tube body alone. Summary of the Invention

[0004] Embodiments of the present disclosure relate to an endotracheal intubation with a secretion collection function to solve the problem that traditional tracheostomy cannulas have a double-layer structure. When cleaning, the inner tube needs to be disassembled, and professional medical staff or family members and caregivers who are proficient in the operation steps are required to operate. The operation difficulty is high, and improper operation is likely to cause infection and aggravate the condition. Therefore, patients cannot clean the tube body alone.

[0005] In a first aspect of the present disclosure, there is provided an endotracheal intubation with a secretion collection function, specifically including: an outer gas intubation tube, an upper end of the outer gas intubation tube is fixedly connected with a gas intubation fixing plate, an inner tube cap is closely rotatably connected above the gas intubation fixing plate, a gas intubation inner tube is closely rotatably connected inside the inner tube cap, the gas intubation inner tube is inserted inside the outer gas intubation tube, a lower end of the gas intubation inner tube is butted against a lower end of the outer gas intubation tube, a sputum drainage tube connection is fixedly connected to an outer wall of the cap of the inner tube cap, an inner guide plate is fixedly connected inside the sputum drainage tube connection, a guiding hole is opened at a center of the inner guide plate, a sealing plug block is slidably connected inside the sputum drainage tube connection, a plug block guide rod is vertically welded to a lower end of the sealing plug block, the plug block guide rod is slidably connected to the guiding hole, a sputum drainage conical opening is opened at an inner end of the sputum drainage tube connection, the sputum drainage conical opening is fitted with the sealing plug block, the plug block guide rod is slidably connected to the inner guide plate, and a connection pipe spiral hole is provided at an outer end of the sputum drainage tube connection.

[0006] Further, a lower end of the outer gas intubation tube is bent inward to form an outer tube flange, an outer surface of the outer tube flange is a smooth arc surface, a sputum inlet hole with a circular hole structure is penetrated through a tube wall of the outer gas intubation tube, and an inner edge of an outer end of the sputum inlet hole is processed into an arc.

[0007] Further, two "L"-shaped limiting hooks are fixedly connected to the outer surface of the air-insert fixing plate. The lower edge of the inner tube cap is bent outward to form a cap lower edge, and two limiting notches are formed in the outer edge of the cap lower edge. The cap lower edge is in close sliding connection with the limiting hooks.

[0008] Further, the opening of the sputum drainage conical opening is of a conical structure, the sealing plug is of a frustum of a cone structure, and the side surface of the sealing plug fits with the conical inner wall of the sputum drainage conical opening.

[0009] Further, the outer edge of the inner guide plate is fixedly connected to the inner wall of the sputum drainage pipe connection. Three fan-shaped guide plate through holes are formed through the inner guide plate, and the three guide plate through holes are radially distributed outside the guide hole.

[0010] Further, the lower end edge of the air-insert inner tube is curled and bent outward to form an inner tube flange. The outer edge of the inner tube flange fits with the inside of the air-insert outer tube, and there is a gap between the outer surface of the air-insert inner tube and the inner surface of the air-insert outer tube.

[0011] Further, the inner tube flange fits with the outer tube flange, and a circular hole structure end air inlet is formed through and around the bottom of the wall of the air-insert inner tube.

[0012] Further, a plug block tension spring is sleeved on the plug block guide rod. The two ends of the plug block tension spring are respectively fixedly connected to the inner guide plate and the sealing plug, and a guide rod top plate is fixedly connected to the outer end of the plug block guide rod.

[0013] Further, under normal conditions, a rubber sealing cover is sleeved on the outer end of the sputum drainage pipe connection. During sputum suction, a sputum drainage device connecting pipe is installed at the outer end of the sputum drainage pipe connection, and the threaded interface of the sputum drainage device connecting pipe is connected to the connection screw hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The tracheotomy cannula in the present invention is provided with a special cleaning structure. When cleaning the tracheotomy cannula, the sputum drainage device connecting pipe can be connected to the sputum drainage pipe connection without disassembling the tracheotomy cannula. The negative pressure suction device is connected to the cannula through the sputum drainage device connecting pipe, and the secretions attached to the inside of the cannula are discharged through negative pressure, reducing the difficulty of cannula cleaning. The collection of secretions can be carried out without disassembling the inner tube, which can avoid the pollution of the inner tube, improve the safety and convenience of cannula cleaning. After the patient is familiar with the operation steps, he can operate alone without the help of medical staff or accompanying personnel to clean the tracheal intubation, which has good practicability.

[0016] In addition, when traditional endotracheal intubation is used, due to the narrow gap between the outer wall of the endotracheal tube and the inner wall of the trachea, sputum is likely to accumulate at this position. A sputum inlet hole is provided in the outer tube of the endotracheal intubation. Through the setting of the sputum inlet hole, when the drainage tube adapter is connected to a negative pressure sputum suction device, the air pressure in the space between the outer tube of the endotracheal intubation and the inner tube of the endotracheal intubation decreases, causing the outer surface of the outer tube of the endotracheal intubation to fit against the inner wall of the trachea, and the sputum adhering to the inner wall of the trachea and the outer wall of the outer tube of the endotracheal intubation passes through the sputum inlet hole and enters the interior of the outer tube of the endotracheal intubation, and then flows upward along with the airflow. Finally, it is discharged from the endotracheal intubation through the drainage tube adapter and the drainage device connecting tube, having the function of collecting and discharging the stubborn sputum accumulated between the outer tube of the endotracheal intubation and the inner wall of the trachea, and being easy to deeply clean the endotracheal intubation.

[0017] In addition, during the daily use of the endotracheal intubation, the outer end of the drainage tube adapter is sealed by a rubber sealing cap to prevent external bacteria from entering the interior of the tube body through the drainage tube adapter and thus causing infection. At the same time, under the action of the plug pulling spring of the sealing plug, the sealing plug fits tightly with the sputum drainage cone opening to seal the inner end of the drainage tube adapter, thereby providing double sealing for the drainage tube adapter and further reducing the probability of bacteria entering. When performing sputum drainage, during the process of screwing the drainage device connecting tube into the adapter screw hole, as the drainage device connecting tube enters, it pushes against the guide rod top plate, causing the sealing plug to move towards the center of the inner tube screw cap, creating a gap between the sealing plug and the sputum drainage cone opening, automatically connecting the drainage device connecting tube with the inner tube screw cap. Without manual adjustment of the tube body, the negative pressure sputum suction device can be connected through the drainage device connecting tube, with convenient operation, and reducing the contact between the hand and the tube body, thereby reducing the probability of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings:

[0021] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0022] Figure 2 A schematic diagram showing the internal structure of the drainage tube adapter in the separated state of the drainage device connecting tube and the drainage tube adapter of the present application is shown;

[0023] Figure 3 A schematic diagram showing the internal structure of the drainage tube adapter in the docking state of the drainage device connecting tube and the drainage tube adapter of the present application is shown;

[0024] Figure 4 A schematic diagram showing the structure of the inner tube screw cap of the present application is shown;

[0025] Figure 5 Shows the schematic structural diagram of the air-inserted inner tube of the present application;

[0026] Figure 6 Shows the schematic structural diagram of the air-inserted outer tube of the present application;

[0027] Figure 7 Shows the schematic structural diagram of the sealing plug of the present application;

[0028] Figure 8 Shows the Figure 2 schematic diagram of the partial enlargement at position A in the present application;

[0029] Figure 9 Shows the Figure 3 schematic diagram of the partial enlargement at position B in the present application;

[0030] Figure 10 Shows the Figure 3 schematic diagram of the partial enlargement at position C in the present application;

[0031] Figure 11 Shows the Figure 4 schematic diagram of the partial enlargement at position D in the present application.

[0032] List of reference numerals

[0033] 1. Air-inserted outer tube; 101. Outer tube flange; 102. Sputum inlet hole; 2. Air-inserted fixing plate; 201. Limit hook; 3. Inner tube cap; 301. Cap outer wall; 302. Cap lower edge; 303. Limit notch; 4. Sputum drainage pipe adapter; 401. Adapter screw hole; 402. Sputum drainage cone; 5. Inner guide plate; 501. Guide hole; 502. Guide plate perforation; 6. Air-inserted inner tube; 601. Inner tube flange; 602. End air inlet hole; 7. Sputum drainage device connecting pipe; 8. Sealing plug; 801. Plug guide rod; 802. Plug tension spring; 803. Guide rod top plate. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 to 11 :

[0036] The present invention provides an endotracheal tube with a secretion collection function, comprising: an outer endotracheal tube 1, an endotracheal fixing plate 2 is fixedly connected to the upper end of the outer endotracheal tube 1, an inner tube cap 3 is closely rotatably connected above the endotracheal fixing plate 2, an inner endotracheal tube 6 is closely rotatably connected inside the inner tube cap 3, the inner endotracheal tube 6 is inserted into the inner part of the outer endotracheal tube 1, the lower end of the inner endotracheal tube 6 is butted against the lower end of the outer endotracheal tube 1, a sputum drainage tube connector 4 is fixedly connected to the outer wall 301 of the cap of the inner tube cap 3, an inner guide plate 5 is fixedly connected inside the sputum drainage tube connector 4, a guide hole 501 is opened at the center of the inner guide plate 5, a sealing plug 8 is slidably connected inside the sputum drainage tube connector 4, a plug guide rod 801 is vertically welded to the lower end of the sealing plug 8, the plug guide rod 801 is slidably connected to the guide hole 501, a sputum drainage conical opening 402 is opened at the inner end of the inside of the sputum drainage tube connector 4, the sputum drainage conical opening 402 is in fit with the sealing plug 8, the plug guide rod 801 is slidably connected to the inner guide plate 5, a connecting pipe spiral hole 401 is provided at the outer end of the inside of the sputum drainage tube connector 4, the lower end edge of the inner endotracheal tube 6 is curled and bent outward to be provided with an inner tube flange 601, the outer edge of the inner tube flange 601 is in fit with the inside of the outer endotracheal tube 1, a gap is provided between the outer surface of the inner endotracheal tube 6 and the inner surface of the outer endotracheal tube 1, the inner tube flange 601 is in fit with the outer tube flange 101, so that the bottom of the inner endotracheal tube 6 and the outer endotracheal tube 1 are stably butted, and at the same time, scratches on the inner surface of the trachea can be effectively avoided. An end air inlet hole 602 in the shape of a circular hole structure is penetrated and surrounded at the bottom of the wall of the inner endotracheal tube 6; when a negative pressure sputum suction device is connected to the inner tube cap 3 through a sputum drainage device connecting pipe 7, the negative pressure sputum suction device evacuates the gas inside the inner tube cap 3 outward, the air in the trachea enters between the outer endotracheal tube 1 and the inner endotracheal tube 6 through the end air inlet hole 602, so that the gas between the outer endotracheal tube 1 and the inner endotracheal tube 6 is evacuated, and the sputum in the gap between the outer endotracheal tube 1 and the inner endotracheal tube 6 will also enter the negative pressure sputum suction device along with the airflow, thereby realizing the cleaning of the endotracheal tube. Compared with the traditional structure of the endotracheal tube, the endotracheal tube does not need to be disassembled and pulled out during cleaning, the cleaning method of the endotracheal tube is more convenient, the difficulty of cleaning the cannula is reduced, the secretion can be collected without disassembling the inner tube, the pollution of the inner tube can be avoided, and the patient can operate alone after being familiar with the operation steps without the assistance of medical staff or accompanying personnel.

[0037] In the embodiments of the present disclosure, the lower end of the air-insertion outer tube 1 is bent inward to form an outer tube flange 101. The outer surface of the outer tube flange 101 is a smooth arc surface. A sputum inlet hole 102 with a circular hole structure is penetrated through the tube wall of the air-insertion outer tube 1. The inner edge of the outer end of the sputum inlet hole 102 is processed into an arc to prevent the inner edge of the outer end of the sputum inlet hole 102 from scratching the trachea when rubbing against the trachea; through the design of the sputum inlet hole 102, when the sputum drainage tube connector 4 is connected to a negative pressure sputum suction device, the air pressure in the space between the air-insertion outer tube 1 and the air-insertion inner tube 6 decreases, causing the outer surface of the air-insertion outer tube 1 to fit against the inner wall of the trachea, and the sputum adhering to the inner wall of the trachea and the outer wall of the air-insertion outer tube 1 to pass through the sputum inlet hole 102 into the gap between the air-insertion outer tube 1 and the air-insertion inner tube 6, and flow upward along with the air flow, and finally be discharged from the tracheal intubation through the sputum drainage tube connector 4 and the sputum drainage device connecting tube 7, having the function of collecting and discharging the stubborn sputum accumulated between the air-insertion outer tube 1 and the inner wall of the trachea, and deeply cleaning the tracheal intubation.

[0038] In the embodiments of the present disclosure, two "L"-shaped limiting hooks 201 are fixedly connected to the outer surface of the air-insertion fixing plate 2. The lower edge of the inner tube cap 3 is bent outward to form a cap lower edge 302. The cap lower edge 302 is closely slidably connected to the limiting hook 201. Two limiting notches 303 are formed on the outer edge of the cap lower edge 302; in the normal state, the limiting notches 303 and the limiting hooks 201 are in an interleaved state, and the limiting hook 201 limits the cap lower edge 302 to prevent the inner tube cap 3 from detaching from the air-insertion fixing plate 2. When it is necessary to disassemble the air-insertion inner tube 6, the inner tube cap 3 is rotated to make the limiting notches 303 overlap with the limiting hooks 201, and then the inner tube cap 3 can be disassembled from the air-insertion fixing plate 2, and the air-insertion inner tube 6 can be pulled out from the inside of the air-insertion outer tube 1.

[0039] In the embodiments of the present disclosure, the outer end of the sputum drainage tube connector 4 is sleeved with a rubber sealing cap under normal conditions. The opening of the sputum drainage cone 402 is in a conical structure. The sealing plug 8 is in a frustum shape. The side surface of the sealing plug 8 fits against the conical inner wall of the sputum drainage cone 402. The outer end of the sputum drainage tube connector 4 is sealed by the rubber sealing cap to prevent external bacteria from entering the tube body through the sputum drainage tube connector 4 and causing infection. At the same time, under the action of the plug pulling spring 802, the sealing plug 8 fits tightly against the sputum drainage cone 402 to seal the inner end of the sputum drainage tube connector 4, thereby providing double sealing for the sputum drainage tube connector 4 and further reducing the probability of bacteria entering.

[0040] In the embodiments of the present disclosure, the outer edge of the inner guide plate 5 is fixedly connected to the inner wall of the sputum drainage tube connector 4. Three fan-shaped guide plate through holes 502 are penetrated through the inner guide plate 5. The three guide plate through holes 502 are radially distributed outside the guide hole 501; through the arrangement of the guide plate through holes 502, sputum can pass through the inner guide plate 5 and enter the sputum drainage device connecting tube 7. And the guide hole 501 is slidably connected to the plug guide rod 801 to play a guiding role.

[0041] Embodiment 2. On the basis of Embodiment 1, a plug block tension spring 802 is sleeved outside the plug block guide rod 801. The two ends of the plug block tension spring 802 are respectively fixedly connected to the inner guide plate 5 and the sealing plug block 8. The outer end of the plug block guide rod 801 is fixedly connected with a guide rod top plate 803. During sputum aspiration, a sputum aspirator connecting pipe 7 is installed at the outer end of the sputum drainage pipe connecting pipe 4. The threaded interface of the sputum aspirator connecting pipe 7 is connected to the connecting pipe spiral hole 401. When performing sputum drainage, during the process of screwing the sputum aspirator connecting pipe 7 into the connecting pipe spiral hole 401, as the sputum aspirator connecting pipe 7 enters, the guide rod top plate 803 is pushed, so that the sealing plug block 8 moves towards the center of the inner pipe screw cap 3, creating a gap between the sealing plug block 8 and the sputum drainage conical opening 402, automatically connecting the sputum aspirator connecting pipe 7 with the inner pipe screw cap 3. Without manual adjustment of the pipe body, the negative pressure sputum aspirator can be connected through the sputum aspirator connecting pipe 7, with convenient operation and avoiding the contamination of the pipe body caused by hand contact with the pipe body.

[0042] The working principle of this embodiment: First, connect the sputum aspirator connecting pipe 7 to the negative pressure sputum aspirator, remove the sealing cover at the outer end of the sputum drainage pipe connecting pipe 4, and screw the spiral joint of the sputum aspirator connecting pipe 7 into the connecting pipe spiral hole 401. As the spiral plug of the sputum aspirator connecting pipe 7 gradually enters, the guide rod top plate 803 is pushed, so that the sealing plug block 8 moves towards the center of the inner pipe screw cap 3, creating a gap between the sealing plug block 8 and the sputum drainage conical opening 402. Start the negative pressure sputum aspirator, and the negative pressure sputum aspiration device evacuates the gas inside the inner pipe screw cap 3. The air in the trachea enters between the air insertion outer pipe 1 and the air insertion inner pipe 6 through the end air inlet hole 602, evacuating the gas between the air insertion outer pipe 1 and the air insertion inner pipe 6. And with the airflow effect, the sputum in the gap between the air insertion outer pipe 1 and the air insertion inner pipe 6 will also enter the negative pressure sputum aspiration device along with the airflow. At the same time, as the air pressure in the space between the air insertion outer pipe 1 and the air insertion inner pipe 6 decreases, the outer surface of the air insertion outer pipe 1 fits against the inner wall of the trachea, and the sputum attached to the inner wall of the trachea and the outer wall of the air insertion outer pipe 1 passes through the sputum entry hole 102 into the gap between the air insertion outer pipe 1 and the air insertion inner pipe 6 and flows upward along with the airflow, and finally is discharged from the tracheal intubation through the sputum drainage pipe connecting pipe 4 and the sputum aspirator connecting pipe 7. After sputum drainage is completed, rotate and pull out the sputum aspirator connecting pipe 7. The sealing plug block 8 resets under the action of the plug block tension spring 802, automatically blocking the sputum drainage conical opening 402, and sealing the outer end of the sputum drainage pipe connecting pipe 4 with the sealing cover, thus completing the collection and cleaning of secretions without disassembling the tracheal intubation. If it is necessary to disassemble the air insertion inner pipe 6 for further cleaning, the inner pipe screw cap 3 can be rotated to align the limit notch 303 with the limit hook 201, remove the inner pipe screw cap 3 and simultaneously pull out the air insertion inner pipe 6. During the process of pulling out the air insertion inner pipe 6, the inner pipe flange 601 rubs against the air insertion outer pipe 1, and the inner wall of the air insertion outer pipe 1 can be scraped by the inner pipe flange 601, and the stubborn sputum on the inner wall of the air insertion outer pipe 1 can be taken away synchronously.

Claims

1. An endotracheal tube with secretion collection function, comprising: The air plug outer tube (1) is characterized in that: the upper end of the air plug outer tube (1) is fixedly connected to an air plug fixing plate (2), the upper end of the air plug fixing plate (2) is tightly rotatably connected to an inner tube screw cap (3), the inner tube screw cap (3) is tightly rotatably connected to an air plug inner tube (6), the air plug inner tube (6) is inserted into the air plug outer tube (1), the lower end of the air plug inner tube (6) is butt-jointed with the lower end of the air plug outer tube (1), a sputum discharge pipe connecting pipe (4) is fixedly connected to the outer wall (301) of the screw cap of the inner tube screw cap (3), and the inner guide plate (5) is fixedly connected to the inside of the sputum discharge pipe connecting pipe (4). ), a guide hole (501) is provided at the center of the inner guide plate (5), a sealing block (8) is slidably connected inside the sputum discharge pipe connecting pipe (4), a block guide rod (801) is vertically welded to the lower end of the sealing block (8), the block guide rod (801) is slidably connected to the guide hole (501), a sputum discharge cone opening (402) is provided at the inner end of the sputum discharge pipe connecting pipe (4), the sputum discharge cone opening (402) is fitted with the sealing block (8), the block guide rod (801) is slidably connected to the inner guide plate (5), and a connecting pipe spiral hole (401) is provided at the inner outer end of the sputum discharge pipe connecting pipe (4).

2. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The lower end of the air inlet outer tube (1) is bent inward to form an outer tube fold edge (101), the outer surface of the outer tube fold edge (101) is a smooth arc surface, a sputum inlet hole (102) with a circular hole structure is penetrated through the tube wall of the air inlet outer tube (1), and the inner edge of the outer end of the sputum inlet hole (102) is processed into an arc.

3. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The outer surface of the air plug fixing plate (2) is fixedly connected with two "L"-shaped limit hooks (201); the lower edge of the inner tube screw cap (3) is bent outward to form a screw cap lower edge (302); the outer edge of the screw cap lower edge (302) is provided with two limit notches (303); the screw cap lower edge (302) is tightly slidably connected with the limit hooks (201).

4. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The opening of the sputum discharge cone opening (402) is in a conical structure, the sealing block (8) is in a truncated cone structure, and the side surface of the sealing block (8) fits with the conical inner wall of the sputum discharge cone opening (402).

5. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The outer edge of the inner guide plate (5) is fixedly connected to the inner wall of the sputum discharge pipe connecting pipe (4), and three guide plate through-holes (502) of fan-shaped structure are penetrated through the inner guide plate (5), and the three guide plate through-holes (502) are radially distributed outside the guide hole (501).

6. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The lower end edge of the air plug inner tube (6) is curled and bent outward to form an inner tube folded edge (601), the outer edge of the inner tube folded edge (601) is in contact with the inside of the air plug outer tube (1), and a gap is provided between the outer surface of the air plug inner tube (6) and the inner surface of the air plug outer tube (1).

7. The endotracheal tube with secretion collection function according to claim 6, characterized in that: The inner tube folded edge (601) is fitted with the outer tube folded edge (101), and the bottom of the tube wall of the air plug inner tube (6) is penetrated and surrounded by an end air inlet hole (602) with a circular hole structure.

8. The endotracheal tube with secretion collection function according to claim 1, characterized in that: The blocking block guide rod (801) is covered with a blocking block tension spring (802), the two ends of the blocking block tension spring (802) are respectively fixedly connected to the inner guide plate (5) and the sealing blocking block (8), and the outer end of the blocking block guide rod (801) is fixedly connected to the guide rod top plate (803).

9. The endotracheal tube with secretion collection function according to claim 1, characterized in that: Under normal conditions, the outer end of the sputum discharge pipe connecting pipe (4) is sleeved with a rubber sealing cover. When suctioning sputum, the outer end of the sputum discharge pipe connecting pipe (4) is installed with a sputum discharger connecting pipe (7), and the threaded interface of the sputum discharger connecting pipe (7) is connected to the spiral hole (401) of the connecting pipe.

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