A breathing machine conduit

Abstract

The utility model discloses a breathing machine pipeline relates to breathing machine application technical field, including inhale branch pipe and exhale branch pipe, inhale branch pipe has inhale tee portion on, inhale tee portion has inhale first branch, inhale second branch and inhale third branch of intercommunication, inhale third branch has opened first water drain, and first water drain can open or close, and first water drain is placed in the below of inhale first branch and inhale second branch, exhale branch pipe has exhale tee portion on, exhale tee portion has exhale first branch, exhale second branch and exhale third branch of intercommunication, and exhale third branch has opened second water drain, and second water drain can open or close, and second water drain is placed in the below of exhale first branch and exhale second branch, the utility model discloses simple operation, convenient to use can reduce the risk of causing cross infection or environmental pollution, improve use safety.

Description

Technical Field

[0001] This utility model relates to the field of ventilator application technology, and in particular to a ventilator tubing. Background Technology

[0002] In modern clinical medicine, ventilators, as an effective means of artificially replacing spontaneous ventilation, are widely used in respiratory failure caused by various reasons, anesthetic respiratory management during major surgery, respiratory support therapy, and emergency resuscitation, occupying a very important position in the field of modern medicine. A ventilator is a crucial medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

[0003] Ventilator tubing is an essential component for delivering air to patients using a ventilator. It is a hollow tubing system made of flexible materials (such as medical-grade plastic or silicone) and typically includes a main tubing, inspiratory bronchioles, and expiratory bronchioles. The inspiratory and expiratory bronchioles are connected to one end of the main tubing at the patient's end via a Y-shaped tee connector. The other end of the main tubing is connected to the patient via a face mask, endotracheal tube, or tracheostomy tube, forming a closed gas circulation pathway. Humidifiers, filters, and other components can be added to the ventilator tubing as needed.

[0004] Because the ventilator tubing is exposed to room temperature, which is lower than body temperature, condensation will form on the tubing from the heated oxygen flowing through it and from the patient's exhaled air. A common component for handling condensation is a condensation collection cup, typically connected to both the inspiratory and expiratory branches via a Y-shaped three-way connector. The collection cup should be positioned at the lowest point between the patient and the ventilator to prevent condensation from flowing back into the patient's trachea. Condensation should be emptied every 4-8 hours, or immediately if more than one-third of the tubing is filled with water. Condensation should also be removed before the patient turns over or changes position.

[0005] Traditionally, emptying condensate from ventilator tubing requires the following steps: Wear sterile gloves or thoroughly clean hands with a quick-drying hand sanitizer; ensure the ventilator is in standby mode; prepare a dedicated waste container and medical waste bags; remove the ventilator tubing from its support, ensuring the condensate collection cup is below the humidifier tank; hold the tubing near the patient with one hand, and detach the collection cup from the tubing with the other; slowly and directionally pour the condensate into the prepared sealed container, avoiding splashing; after emptying, reconnect the collection cup to the tubing, ensuring all connections are tightened; turn on the ventilator and observe the waveform or pressure gauge for normal operation; test for leaks; adjust the tubing routing; and reposition the tubing to avoid creating new bends that could lead to condensate buildup. However, the operation is complicated, and the condensate may contain respiratory secretions or pathogens (such as bacteria and viruses) from patients. When disassembling and assembling the water collection cup, the condensate or residual condensate is easily shaken to form tiny particles. When pouring out the condensate, rapid pouring or a large drop can easily cause the condensate to splash, leading to the spread of aerosols and causing cross-infection or environmental pollution. Utility Model Content

[0006] The purpose of this invention is to provide a ventilator tubing that solves the problems existing in the prior art. It is simple to operate, convenient to use, reduces the risk of cross-infection or environmental pollution, and improves the safety of use.

[0007] To achieve the above objectives, this utility model provides the following solution:

[0008] This utility model provides a ventilator tubing, including an inspiratory bronchus and an expiratory bronchus. The inspiratory bronchus has an inspiratory three-way valve, which has three interconnected inspiratory branches: a first inspiratory branch, a second inspiratory branch, and a third inspiratory branch. The first inspiratory branch is connected to the patient-side end of the inspiratory bronchus, and the second inspiratory branch is connected to the ventilator-side end of the inspiratory bronchus. The third inspiratory branch has a first drain outlet, which can be opened or closed and is located below the first and second inspiratory branches. The expiratory bronchus has an expiratory three-way valve, which has three interconnected expiratory branches: a first expiratory branch, a second expiratory branch, and a third expiratory branch. The first expiratory branch is connected to the patient-side end of the expiratory bronchus, and the second expiratory branch is connected to the ventilator-side end of the expiratory bronchus. The third expiratory branch has a second drain outlet, which can be opened or closed and is located below the first and second expiratory branches.

[0009] Preferably, the inspiratory bronchus is integrally formed; the expiratory bronchus is integrally formed.

[0010] Preferably, the first drain outlet is used to communicate with the negative pressure suction device; the second drain outlet is used to communicate with the negative pressure suction device.

[0011] Preferably, the third inhalation branch has a first guide tube, a first water collection tube, and a first drain tube. The top end of the first guide tube is connected and communicates with the first inhalation branch and the second inhalation branch. The first water collection tube is fixedly sleeved on the outside of the first guide tube, and the bottom end of the first water collection tube is located below the bottom end of the first guide tube. The top end of the first drain tube is connected and communicates with the bottom end of the first water collection tube, and the bottom end of the first drain tube has a first drain outlet. The third exhalation branch has a second guide tube, a second water collection tube, and a second drain tube. The top end of the second guide tube is connected and communicates with the first exhalation branch and the second exhalation branch. The second water collection tube is fixedly sleeved on the outside of the second guide tube, and the bottom end of the second water collection tube is located below the bottom end of the second guide tube. The top end of the second drain tube is connected and communicates with the bottom end of the second water collection tube, and the bottom end of the second drain tube has a second drain outlet.

[0012] Preferably, the first guide pipe gradually contracts inward from top to bottom, and the first water collection pipe gradually expands outward from top to bottom and then gradually contracts inward; the second guide pipe gradually contracts inward from top to bottom, and the second water collection pipe gradually expands outward from top to bottom and then gradually contracts inward.

[0013] Preferably, the first drain pipe is provided with a first shut-off device, which is used to block the connection between the first drain pipe and the negative pressure suction device; the second drain pipe is provided with a second shut-off device, which is used to block the connection between the second drain pipe and the negative pressure suction device.

[0014] Preferably, the first shut-off device is a first water-stop clamp; the second shut-off device is a second water-stop clamp.

[0015] Preferably, it further includes a main pipe and a first three-way connector, the first three-way connector having a first branch pipe, a second branch pipe and a third branch pipe that are interconnected; the first branch pipe can be fixedly connected and communicated with the patient end of the inspiratory bronchus, and the first branch pipe is provided with an inspiratory valve; the second branch pipe can be fixedly connected and communicated with the patient end of the expiratory bronchus, and the second branch pipe is provided with an expiratory valve; a blocking pipe is fixedly provided inside the third branch pipe, the first end of the blocking pipe is connected to the connection point of the first branch pipe, the second branch pipe and the third branch pipe, and the second end of the blocking pipe is fixedly connected and communicated with one end of the main pipe; the first end of the third branch pipe is away from the connection point of the first branch pipe, the second branch pipe and the third branch pipe, and the first end of the third branch pipe is fixedly connected to the second end of the blocking pipe, and the inner wall of the third branch pipe and the outer wall of the blocking pipe can form a water storage space.

[0016] Preferably, the blocking tube and the third branch tube are integrally formed.

[0017] Preferably, it further includes a second three-way connecting pipe, which has a first connecting pipe, a second connecting pipe and a third connecting pipe that are interconnected. The first connecting pipe is fixedly connected to and communicates with the end of the main pipe away from the blocking pipe. The second connecting pipe is used to be fixedly connected to and communicates with one end of the endotracheal tube. A first plug is fixedly provided on the third connecting pipe. A first suction hole is provided on the first plug. A second plug is detachably fixedly sealed on the first suction hole. A second suction hole is provided on the second plug. A third plug is detachably fixedly sealed on the second suction hole. A third suction hole is provided on the third plug. A fourth plug is detachably fixedly sealed on the third suction hole.

[0018] The present invention achieves the following technical advantages over the prior art:

[0019] The ventilator tubing provided by this utility model has a first drain port on the third inspiratory branch of the inspiratory bronchus. The first drain port can be opened or closed and is located below the first and second inspiratory branches. In use, the inspiratory three-way valve is positioned lower than the patient-side and ventilator-side ends of the inspiratory bronchus, allowing condensate to collect in the inspiratory three-way valve. When condensate needs to be drained, the first drain port is opened to allow it to drain away. The expiratory bronchus has a second drain port on the third expiratory branch, which can also be opened or closed. The second drain outlet is located below the first and second expiratory branches. During use, the expiratory three-way valve is positioned lower than the patient-side and ventilator-side ends of the expiratory bronchus. This allows condensate in the expiratory bronchus to collect at the expiratory three-way valve. When condensate needs to be drained, the second drain outlet is opened to allow it to flow out. The ventilator tubing provided by this invention is simple to operate and convenient to use. It eliminates the need to empty condensate and facilitates smooth drainage, effectively preventing vibration or splashing, reducing the risk of cross-infection or environmental pollution, and improving safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall schematic diagram of the ventilator tubing provided by this utility model;

[0022] Figure 2 A schematic diagram of the inspiratory tee section in the ventilator tubing provided by this utility model;

[0023] Figure 3 A schematic diagram of the expiratory three-way valve in the ventilator tubing provided by this utility model;

[0024] Figure 4 A schematic diagram of the first plug in the ventilator tubing provided by this utility model;

[0025] In the picture:

[0026] 1-Intake branch pipe, 11-Intake tee, 12-First intake branch, 13-Second intake branch, 14-Third intake branch, 15-First drain outlet, 16-First guide pipe, 17-First water collection pipe, 18-First drain pipe, 19-First shut-off device;

[0027] 2-Exhalation bronchus, 21-Exhalation three-way valve, 22-First expiratory branch, 23-Second expiratory branch, 24-Third expiratory branch, 25-Second drain outlet, 26-Second guide tube, 27-Second water collection tube, 28-Second drain tube, 29-Second shut-off device;

[0028] 3-Supervisor;

[0029] 4-First tee connecting pipe, 41-First branch pipe, 42-Second branch pipe, 43-Third branch pipe, 44-Blocking pipe, 45-Water storage space;

[0030] 5-Second tee connector, 51-First connecting pipe, 52-Second connecting pipe, 53-Third connecting pipe, 54-First plug, 55-Second plug, 56-Third plug, 57-Fourth plug. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The purpose of this invention is to provide a ventilator tubing that solves the problems existing in the prior art. It is simple to operate, convenient to use, reduces the risk of cross-infection or environmental pollution, and improves the safety of use.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 4As shown, this utility model provides a ventilator tubing, including an inspiratory bronchus 1 and an expiratory bronchus 2. The inspiratory bronchus 1 has an inspiratory three-way valve 11, which has three interconnected inspiratory branches: a first inspiratory branch 12, a second inspiratory branch 13, and a third inspiratory branch 14. The first inspiratory branch 12 is connected to the patient-side end of the inspiratory bronchus 1, the second inspiratory branch 13 is connected to the ventilator-side end of the inspiratory bronchus 1, and the third inspiratory branch 14 has a first drain outlet 15, which can be opened or closed. The first drain outlet 15 is located at the first inspiratory branch... Below the second inspiratory branch 12 and the second inspiratory branch 13; the expiratory bronchus 2 has an expiratory three-way valve 21, which has an expiratory first branch 22, an expiratory second branch 23 and an expiratory third branch 24 that are interconnected. The expiratory first branch 22 is connected to the patient end of the expiratory bronchus 2, the expiratory second branch 23 is connected to the ventilator end of the expiratory bronchus 2, and the expiratory third branch 24 has a second drain outlet 25 that can be opened or closed. The second drain outlet 25 is located below the expiratory first branch 22 and the second expiratory branch 23.

[0035] The ventilator tubing provided by this utility model has a first drain port 15 on the third inspiratory branch 14 of the inspiratory bronchus 1. The first drain port 15 can be opened or closed. The first drain port 15 is located below the first inspiratory branch 12 and the second inspiratory branch 13. In use, the position of the inspiratory three-way valve 11 is lower than the patient end and the ventilator end of the inspiratory bronchus 1, so that the condensate in the inspiratory bronchus 1 can collect in the inspiratory three-way valve 11. When it is necessary to drain the condensate, the first drain port 15 is opened to drain the condensate out. The expiratory bronchus 2 has a second drain port 25 on the third expiratory branch 24. The second drain port 25 can be opened or closed. The second drain port 25 is positioned below the first expiratory branch 22 and the second expiratory branch 23. During use, the expiratory three-way valve 21 is positioned lower than the patient-side and ventilator-side ends of the expiratory bronchus 2, allowing condensate in the expiratory bronchus 2 to collect in the expiratory three-way valve 21. When condensate needs to be drained, the second drain port 25 is opened, allowing the condensate to drain away. The ventilator tubing provided by this invention is simple to operate and convenient to use. It eliminates the need to empty condensate and facilitates stable drainage, effectively preventing vibration or splashing, reducing the risk of cross-infection or environmental pollution, and improving safety.

[0036] As a preferred embodiment of this invention, the inspiratory bronchus 1 and the expiratory bronchus 2 are integrally formed, which can effectively improve structural stability, reduce the risk of disconnection of the inspiratory bronchus 1 and the expiratory bronchus 2, and improve safety in use.

[0037] In a preferred embodiment of this invention, the first drain outlet 15 is connected to the negative pressure suction device; the second drain outlet 25 is connected to the negative pressure suction device so that the condensate can be directly pumped away using the negative pressure suction device, reducing open operation and preventing aerosol from spreading into the air.

[0038] In a preferred embodiment of this invention, the third intake branch 14 has a first guide pipe 16, a first water collection pipe 17, and a first drain pipe 18. The top end of the first guide pipe 16 is connected to and communicates with the first intake branch 12 and the second intake branch 13. The first water collection pipe 17 is fixedly sleeved on the outside of the first guide pipe 16, and the bottom end of the first water collection pipe 17 is positioned below the bottom end of the first guide pipe 16. After condensation forms, it falls into the first water collection pipe 17 under the action of gravity and accumulates in the first water collection pipe 17. The first water collection pipe 17 collects and stores the condensation. The first guide pipe 16 can also prevent condensation backflow. The top end of the first drain pipe 18 is connected to and communicates with the bottom end of the first water collection pipe 17, and the bottom end of the first drain pipe 18 has a first drain outlet 1. 5. Facilitates the drainage of condensate; the third branch of exhalation 24 has a second guide tube 26, a second water collection tube 27, and a second drain tube 28. The top end of the second guide tube 26 is connected to and communicates with the first branch of exhalation 22 and the second branch of exhalation 23. The second water collection tube 27 is fixedly sleeved on the outside of the second guide tube 26, and the bottom end of the second water collection tube 27 is placed below the bottom end of the second guide tube 26. After condensate is formed, it falls into the second water collection tube 27 under the action of gravity and accumulates in the second water collection tube 27. The second water collection tube 27 collects and stores condensate. The second guide tube 26 can also prevent condensate backflow. The top end of the second drain tube 28 is connected to and communicates with the bottom end of the second water collection tube 27. The bottom end of the second drain tube 28 has a second drain outlet 25 to facilitate the drainage of condensate.

[0039] In a preferred embodiment of this invention, the first guide pipe 16 gradually contracts inward from top to bottom, which not only guides the condensate water downward but also reduces the opening at the bottom of the first guide pipe 16, preventing the condensate water falling into the first collection pipe 17 from flowing back into the first guide pipe 16. The first collection pipe 17 gradually expands outward from top to bottom and then gradually contracts inward, which facilitates the storage of condensate water and guides it downward. The second guide pipe 26 gradually contracts inward from top to bottom, which not only guides the condensate water downward but also reduces the opening at the bottom of the second guide pipe 26, preventing the condensate water falling into the second collection pipe 27 from flowing back into the second guide pipe 26. The second collection pipe 27 gradually expands outward from top to bottom and then gradually contracts inward, which facilitates the storage of condensate water and guides it downward.

[0040] If condensate flows back into the inspiratory bronchus 1 or expiratory bronchus 2, it may cause contamination of the humidifier, abnormal ventilator performance, or even aspiration or infection in the patient, increasing the patient's suffering and reducing patient satisfaction. Therefore, the ventilator tubing provided by this invention can effectively reduce patient suffering and improve patient satisfaction.

[0041] As a preferred embodiment of this invention, the first drain pipe 18 is provided with a first shut-off device 19, which is used to block the connection between the first drain pipe 18 and the negative pressure suction device; the second drain pipe 28 is provided with a second shut-off device 29, which is used to block the connection between the second drain pipe 28 and the negative pressure suction device. The structure is simple and easy to use.

[0042] As a preferred embodiment of this invention, the first shut-off device 19 is a first water-stopping clamp; the second shut-off device 29 is a second water-stopping clamp, which is convenient for manufacturing and use; wherein, both the first drain pipe 18 and the second drain pipe 28 are flexible hoses.

[0043] As a preferred embodiment of this invention, the ventilator tubing provided by this utility model further includes a main pipe 3 and a first three-way connecting pipe 4. The first three-way connecting pipe 4 has a first branch pipe 41, a second branch pipe 42, and a third branch pipe 43 that are interconnected. The first branch pipe 41 can be fixedly connected and communicated with the patient-proximal end of the inspiratory bronchus 1, and the first branch pipe 41 is provided with an inspiratory valve. The second branch pipe 42 can be fixedly connected and communicated with the patient-proximal end of the expiratory bronchus 2, and the second branch pipe 42 is provided with an expiratory valve. A blocking pipe 44 is fixedly provided inside the third branch pipe 43, and the first end of the blocking pipe 44 is connected to the first branch pipe 41. The second branch pipe 42 and the third branch pipe 43 are connected at the connection point. The second end of the blocking pipe 44 is fixedly connected to one end of the main pipe 3 and is connected. The first end of the third branch pipe 43 is away from the connection point of the first branch pipe 41, the second branch pipe 42 and the third branch pipe 43. The first end of the third branch pipe 43 is fixedly connected to the second end of the blocking pipe 44. The inner wall of the third branch pipe 43 and the outer wall of the blocking pipe 44 can form a water storage space 45. Condensate is stored through the water storage space 45. The outer wall of the blocking pipe 44 prevents condensate from entering the main pipe 3, thereby reducing the risk of condensate entering the main pipe 3 and thus reducing the risk of condensate entering the patient's airway.

[0044] As a preferred embodiment of this invention, the blocking pipe 44 and the third branch pipe 43 are integrally formed, which can effectively improve structural stability, reduce the risk of disconnection, and improve safety in use.

[0045] If condensate flows back into the patient's airway, it may lead to lung infection or even acute respiratory distress, increasing the patient's suffering and reducing patient satisfaction. Therefore, the ventilator tubing provided by this invention can effectively reduce patient suffering and improve patient satisfaction.

[0046] As a preferred embodiment of this invention, the ventilator tubing provided by this utility model further includes a second three-way connecting pipe 5. The second three-way connecting pipe 5 has a first connecting pipe 51, a second connecting pipe 52, and a third connecting pipe 53 that are interconnected. The first connecting pipe 51 is fixedly connected to and communicates with one end of the main pipe 3 away from the blocking pipe 44. The second connecting pipe 52 is used to be fixedly connected to and communicates with one end of the endotracheal tube, and the other end of the endotracheal tube is used to extend into the patient's trachea. A first plug 54 is fixedly provided on the third connecting pipe 53. The first plug... A first suction port is provided on 54, and a second cover 55 is detachably and fixedly sealed on the first suction port; a second suction port is provided on the second cover 55, and a third cover 56 is detachably and fixedly sealed on the second suction port; a third suction port is provided on the third cover 56, and a fourth cover 57 is detachably and fixedly sealed on the third suction port. The first, second, and third suction ports are suction ports of different sizes, which facilitates matching different models of bronchoscopes with suction catheters, increases practicality, improves the safety of suctioning, and facilitates closed-loop suctioning with bronchoscope.

[0047] As a preferred embodiment of this invention, the second cap 55, the third cap 56, and the fourth cap 57 are all provided with a lifting part, so that the corresponding second cap 55, third cap 56, or fourth cap 57 can be removed by pinching the lifting part during use.

[0048] It should be noted that in mechanical ventilation or intensive care, sputum suctioning via fiberoptic bronchoscopy is an advanced procedure for clearing deep airway secretions, restoring atelectasis, or sampling for pathogens. When using open suctioning with existing ventilator tubing, the ventilator tubing connectors need to be placed in a sterile area and wrapped to prevent contamination after removal, making the procedure complex. Furthermore, there is a risk of hypoxemia during suctioning. In addition, open suctioning is not suitable for some special patients, such as those with acute respiratory distress syndrome (ARDS), as it can lead to loss of positive end-expiratory pressure (PEEP), potentially causing alveolar collapse, worsening oxygenation, exacerbating respiratory failure, or even life-threatening emergencies.

[0049] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A ventilator tubing, characterized in that: The device includes an inspiratory bronchus and an expiratory bronchus. The inspiratory bronchus has an inspiratory three-way valve with interconnected inspiratory first, second, and third branches. The first inspiratory branch connects to the patient-proximal end of the inspiratory bronchus, the second inspiratory branch connects to the ventilator-proximal end of the inspiratory bronchus, and the third inspiratory branch has a first drain outlet that can be opened or closed, located below the first and second inspiratory branches. The expiratory bronchus also has an expiratory three-way valve with interconnected expiratory first, second, and third branches. The first expiratory branch connects to the patient-proximal end of the expiratory bronchus, the second expiratory branch connects to the ventilator-proximal end of the expiratory bronchus, and the third expiratory branch has a second drain outlet that can be opened or closed, located below the first and second expiratory branches.

2. The ventilator tubing according to claim 1, characterized in that: The inspiratory bronchus is integrally formed; the expiratory bronchus is integrally formed.

3. The ventilator tubing according to claim 1, characterized in that: The first drain outlet is used to connect to the negative pressure suction device; the second drain outlet is used to connect to the negative pressure suction device.

4. The ventilator tubing according to claim 1, characterized in that: The third inhalation branch has a first guide tube, a first water collection tube, and a first drain tube. The top end of the first guide tube is connected and communicates with the first inhalation branch and the second inhalation branch. The first water collection tube is fixedly sleeved on the outside of the first guide tube, and the bottom end of the first water collection tube is located below the bottom end of the first guide tube. The top end of the first drain tube is connected and communicates with the bottom end of the first water collection tube, and the bottom end of the first drain tube has a first drain outlet. The third exhalation branch has a second guide tube, a second water collection tube, and a second drain tube. The top end of the second guide tube is connected and communicates with the first exhalation branch and the second exhalation branch. The second water collection tube is fixedly sleeved on the outside of the second guide tube, and the bottom end of the second water collection tube is located below the bottom end of the second guide tube. The top end of the second drain tube is connected and communicates with the bottom end of the second water collection tube, and the bottom end of the second drain tube has a second drain outlet.

5. The ventilator tubing according to claim 4, characterized in that: The first guide pipe gradually contracts inward from top to bottom, and the first water collection pipe first gradually expands outward from top to bottom and then gradually contracts inward; the second guide pipe gradually contracts inward from top to bottom, and the second water collection pipe first gradually expands outward from top to bottom and then gradually contracts inward.

6. The ventilator tubing according to claim 4, characterized in that: The first drain pipe is provided with a first shut-off device, which is used to block the connection between the first drain pipe and the negative pressure suction device; the second drain pipe is provided with a second shut-off device, which is used to block the connection between the second drain pipe and the negative pressure suction device.

7. The ventilator tubing according to claim 6, characterized in that: The first shut-off device is a first water-stop clamp; the second shut-off device is a second water-stop clamp.

8. The ventilator tubing according to claim 1, characterized in that: It also includes a main pipe and a first three-way connector, the first three-way connector having a first branch pipe, a second branch pipe and a third branch pipe that are interconnected; the first branch pipe can be fixedly connected and communicated with the patient end of the inspiratory bronchus, and the first branch pipe is provided with an inspiratory valve; the second branch pipe can be fixedly connected and communicated with the patient end of the expiratory bronchus, and the second branch pipe is provided with an expiratory valve; a blocking pipe is fixedly provided inside the third branch pipe, the first end of the blocking pipe is connected to the connection point of the first branch pipe, the second branch pipe and the third branch pipe, and the second end of the blocking pipe is fixedly connected and communicated with one end of the main pipe; the first end of the third branch pipe is away from the connection point of the first branch pipe, the second branch pipe and the third branch pipe, and the first end of the third branch pipe is fixedly connected to the second end of the blocking pipe, and the inner wall of the third branch pipe and the outer wall of the blocking pipe can form a water storage space.

9. The ventilator tubing according to claim 8, characterized in that: The blocking pipe and the third branch pipe are integrally formed.

10. The ventilator tubing according to claim 8, characterized in that: It also includes a second three-way connecting tube, which has a first connecting tube, a second connecting tube, and a third connecting tube that are interconnected. The first connecting tube is fixedly connected to and communicates with the end of the main tube away from the blocking tube. The second connecting tube is used to be fixedly connected to and communicates with one end of the endotracheal tube. A first plug is fixedly provided on the third connecting tube. A first suction hole is provided on the first plug. A second plug is detachably fixedly sealed on the first suction hole. A second suction hole is provided on the second plug. A third plug is detachably fixedly sealed on the second suction hole. A third suction hole is provided on the third plug. A fourth plug is detachably fixedly sealed on the third suction hole.

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