Channel switching assembly and tracheal catheter

Abstract

The present invention provides a channel switching assembly and a tracheal catheter, and relates to the technical field of medical devices. The channel switching assembly of the present invention is used for a tube body of the tracheal catheter. The tube body is provided with a distal opening, a proximal opening, and a lateral opening. A first channel and a second channel that are isolated from each other are arranged in the tube body. A proximal end of the first channel is capable of communicating with the proximal opening, and a distal end thereof is capable of communicating with the distal opening. A proximal end of the second channel is capable of communicating with the proximal opening, and a distal end thereof is capable of communicating with the lateral opening. The channel switching assembly comprises an occluding member that is movably arranged in the tube body and is configured for occluding the first channel or the second channel, such that one of the first channel and the second channel is disconnected from the proximal opening, and the other communicates with the proximal opening. The channel switching assembly further comprises a sealing member that is arranged on the occluding member and is configured for, in the case that an insertion portion is located in the first channel, cooperating with the occluding member to disconnect the first channel from the proximal opening. The present invention has the advantage of simplifying the operation steps during occlusion control of the tracheal catheter.

Description

Channel switching component and endotracheal tube Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a channel switching component and an endotracheal tube. Background Technology

[0002] During thoracic surgery anesthesia, lung isolation is necessary to protect the healthy lung from contamination by secretions or blood draining from the affected lung. Currently, endotracheal tubes are classified as single-lumen or double-lumen tubes. The most common method is to use a single-lumen endotracheal tube for bronchial intubation. Lung isolation and one-lung ventilation are achieved by switching the opening on the single-lumen endotracheal tube to allow for occlusion control.

[0003] Through long-term surgical practice, the applicant found that the procedure for doctors to control the occlusion of endotracheal tubes is rather complicated. Summary of the Invention

[0004] To address the cumbersome operation procedures involved in endotracheal tube occlusion control, this application provides a channel switching component and an endotracheal tube.

[0005] Firstly, this application provides a channel switching component, which adopts the following technical solution:

[0006] A channel switching assembly is provided for the body of an endotracheal tube. The body has a distal opening, a proximal opening, and a lateral opening. The body contains a first channel and a second channel that are isolated from each other. The proximal end of the first channel is connected to the proximal opening, and the distal end is connected to the distal opening. The proximal end of the second channel is connected to the proximal opening, and the distal end is connected to the lateral opening. The first channel is used for insertion of an endoscope. The channel switching assembly includes a blocking member movably disposed on the body to block either the first channel or the second channel, thereby disconnecting one of the first channel and the second channel from the proximal opening and connecting the other to the proximal opening. The channel switching assembly also includes a sealing member disposed on the blocking member. The sealing member is used to, when the insertion portion is located within the first channel, cooperate with the blocking member to disconnect the first channel from the proximal opening.

[0007] Secondly, this application provides an endotracheal tube, which adopts the following technical solution:

[0008] An endotracheal tube includes a tube body, the proximal side of which has a proximal opening, the distal side of which has a distal opening, and a side opening on the sidewall of the tube body; the endotracheal tube further includes a channel switching assembly, which is the channel switching assembly described in any of the above technical solutions.

[0009] The present invention has the following advantages and beneficial effects:

[0010] The channel switching component of this invention allows one of the first and second channels to be in an open state while the other is in a closed state, enabling different air intake modes for the endotracheal tube. This facilitates procedures such as air supply, hemostasis, or surgery on the affected lung side. Furthermore, the channel switching component of this invention achieves different air intake modes based on the position adjustment of the occlusion element. When the position of the occlusion element changes within the tube, the opening and closing states of the lateral opening and distal opening can be switched. In other words, the channel switching component of this invention can simultaneously control the switching between the lateral opening and distal opening states by adjusting the position of the occlusion element, improving the switching efficiency and simplifying the operation of the endotracheal tube.

[0011] On the other hand, by cooperating with the sealing element and the plugging element, the first channel and the proximal opening can be effectively blocked even when the insertion part is already in the first channel. This allows the insertion part to be removed from the tube in an emergency without having to be removed from the tube, thus buying some time for the emergency and further simplifying the operation of the endotracheal tube. Attached Figure Description

[0012] Figure 1 is a structural schematic diagram of some embodiments of this application;

[0013] Figure 2 is a structural schematic diagram of some embodiments of this application;

[0014] Figure 3 is a cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0015] Figure 4 is a partial cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0016] Figure 5 is a partial cross-sectional view of the sealing member in a second state according to some embodiments of this application;

[0017] Figure 6 is a partial cross-sectional view of some embodiments of this application, showing the sealing member in a second state and the insertion portion located in the first through hole;

[0018] Figure 7 is a second cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0019] Figure 8 is a partial cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0020] Figure 9 is a partial cross-sectional view of the sealing member in a second state according to some embodiments of this application;

[0021] Figure 10 is a schematic diagram of the state in which the sealing member of some embodiments of this application is in a first state and the insertion part is located in the first through hole;

[0022] Figure 11 is a schematic diagram of the state in which the sealing member of some embodiments of this application is in the second state and the insertion part is located in the third through hole;

[0023] Figure 12 is a cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0024] Figure 13 is a partial cross-sectional view of the sealing member in a first state according to some embodiments of this application;

[0025] Figure 14 is a partial cross-sectional view of the sealing member in a second state according to some embodiments of this application.

[0026] The diagram is marked as follows:

[0027] 100, Tube body; 110, Proximal opening; 120, Distal opening; 130, Side opening; 140, First channel; 150, Second channel; 160, First balloon; 170, Second balloon; 180, Catheter; 200, Sealing element; 210, Blocking part; 211, First through hole; 212, Second through hole; 213, Third through hole; 213a, Guide slope; 214, Receiving groove; 220, Sliding part; 230, Push-pull part; 300, Sealing element; 400, Mounting part; 410, Sliding cavity; 420, Limiting groove; 500, First rubber part; 600, Second rubber part; 700, Blocking part; 800, Insertion part; 900, Tube. Detailed Implementation

[0028] As an important medical device, the endotracheal tube is typically inserted into the trachea and / or bronchi to establish a temporary artificial breathing channel for patients unable to breathe independently. Simultaneously, in thoracic surgery anesthesia, the endotracheal tube is also widely used for lung isolation procedures to prevent secretions or blood from the affected lung from contaminating the healthy lung, thus ensuring airway cleanliness and the smooth progress of the surgery. Endotracheal tubes are mainly divided into two types: single-lumen and double-lumen. The single-lumen endotracheal tube has gained wider clinical application due to its unique advantages. Specifically, the single-lumen endotracheal tube has a smaller outer diameter, effectively reducing the risk of airway damage; its simple structural design facilitates operation by medical staff; and its consistent airway diameter reduces airflow resistance.

[0029] A single-lumen endotracheal tube typically consists of a tube body, a distal opening, a proximal opening, a connecting tube, and lateral openings. The tube body forms a continuous airway. The distal opening, located at the distal end of the tube body, is normally open to ensure unobstructed gas flow. The proximal opening, located at the proximal end of the tube body, is used for inserting medical devices or injecting gas. The connecting tube connects to the proximal end of the tube body to connect ventilation equipment to maintain the patient's normal breathing. The lateral openings are located on the distal side wall of the tube body and are normally closed, opening only during specific procedures. Furthermore, to secure the endotracheal tube and effectively occlude the bronchi, two balloons are placed on either side of the lateral openings. Inflating these balloons secures the endotracheal tube and, if necessary, blocks a portion of the patient's bronchi.

[0030] In clinical surgery, the lung isolation function of endotracheal tubes is particularly important. In certain surgical scenarios, single-lumen endotracheal tubes require specific techniques to isolate the affected lung. For example, when a patient has bronchial bleeding, an inflatable balloon is typically used to seal the bleeding segment to prevent blood from entering the healthy lung and ensure its normal function. When surgery is required on the affected lung, the single-lumen endotracheal tube is inserted into the bronchus of the affected lung, with the lateral opening aligned with the healthy lung. By closing the distal opening and opening the lateral opening, airflow into the tube is directed only to the healthy lung, preventing it from entering the bronchus of the affected lung, thus achieving isolation of the affected lung. If bronchial bleeding occurs simultaneously during surgery, the bleeding segment must be sealed with a balloon while the tube is fixed in place to stop the bleeding before continuing the surgery. It is worth noting that the location of bronchial bleeding can vary, therefore the sealing procedures differ depending on the surgical scenario, further increasing the complexity of lung isolation procedures.

[0031] To further improve lung isolation, existing technologies have modified single-lumen endotracheal tubes by placing an inflatable balloon at the distal end of the airway. This balloon, located distal to the lateral opening, inflates to close the airway at the distal end of the tube, thus shutting off the distal opening. Additionally, an opening / closing mechanism within the airway controls the opening and closing of the lateral opening; movement of this mechanism opens or closes the lateral opening. These improvements enhance the flexibility and functionality of the endotracheal tube in achieving unilateral ventilation. However, these modifications all require independent control. In practice, to achieve unilateral ventilation, the physician must complete at least three steps: first, inflating the distal balloon to close the distal opening; second, opening the lateral opening; and third, inflating the balloons located on either side of the lateral opening to secure the endotracheal tube. This multi-step operation improves the tube's functionality to some extent, but also significantly increases the complexity of the physician's procedure.

[0032] Especially in clinical emergencies, such as sudden bronchial bleeding, medical staff often have only a few minutes or even tens of seconds to react. In such situations, complex procedures can lead to errors by doctors. For example, a doctor might miss a crucial step, such as failing to properly open the lateral opening or failing to close the distal opening in time; or, due to confusion in the order of operations under stress, functional structures might be opened or closed incorrectly. These situations can directly affect the effectiveness of lung isolation and may even endanger the patient's life. Therefore, existing single-lumen endotracheal tubes still have significant drawbacks in practical use, especially in emergency situations, due to their complexity, making it difficult to meet the needs of rapid and safe clinical application.

[0033] Based on this, this application provides a channel switching component and an endotracheal tube. The channel switching component can open one of the lateral opening and the distal opening of the endotracheal tube and close the other with one action, thus greatly simplifying the occlusion control operation of the endotracheal tube.

[0034] The channel switching component and endotracheal tube provided in this application will be described in detail below with reference to Figures 1 to 14, through specific embodiments and application scenarios.

[0035] The first aspect of this embodiment describes the channel switching component in detail.

[0036] Referring to Figures 1-3, a channel switching assembly is provided for the tube body 100 of an endotracheal tube. The tube body 100 has a proximal opening 110, a distal opening 120, and a lateral opening 130. Exemplarily, the proximal opening 110 is located at the proximal end of the tube body 100, allowing the insertion portion 800 of an endoscope or other instruments to extend into the tube body 100 and further into the bronchus. The distal opening 120 is located at the distal end of the tube body 100, allowing the insertion portion 800 of the endoscope or other instruments to extend from within the tube body 100 into the bronchus. For example, an illumination device on the insertion portion 800 of the endoscope can enter the bronchus through the distal opening 120 to provide illumination for the surgical area; similarly, a camera device on the insertion portion 800 of the endoscope can enter the bronchus through the distal opening 120 to acquire images and transmit them to a host display screen for the doctor to view. For example, the side opening 130 is arranged on the pipe wall of the pipe body 100 near the distal opening 120.

[0037] For example, the tube body 100 has a first channel 140 and a second channel 150 that are isolated from each other. The proximal end of the first channel 140 is connected to the proximal opening 110 and the distal end is connected to the distal opening 120. The proximal end of the second channel 150 is connected to the proximal opening 110 and the distal end is connected to the lateral opening 130. The first channel 140 is used for the insertion part 800 of the endoscope to be inserted. Furthermore, the inner diameter of the first channel 140 is larger than the inner diameter of the second channel 150. Since the insertion part 800 extends from the distal opening 120 side through the first channel 140, the first channel 140 serves as the main insertion channel of the tube body 100 for the insertion of most instruments during the operation.

[0038] For example, referring to Figures 1, 2, and 3, the tube body 100 is provided with a first balloon 160, a second balloon 170, and a conduit 180. The conduit 180 provides a gas inlet and / or outlet channel for the first balloon 160, and also provides a gas inlet and / or outlet channel for the second balloon 170. For example, the second balloon 170 is positioned distal to the first balloon 160. By inflating the first balloon 160 and the second balloon 170, both can expand, thereby securing the endotracheal tube within the trachea. For example, the first balloon 160 and the second balloon 170 can be inflated or deflated simultaneously, or they can be inflated or deflated independently.

[0039] For example, the human bronchi include the main trachea and branch trachea. The branch trachea are located distal to the main trachea and are symmetrically distributed as two, leading directly to the lungs. When the endotracheal tube 100 is inserted from the main trachea into one of the branch trachea, with the side opening 130 facing the other branch trachea, simultaneous ventilation of both lungs can be achieved if the side opening 130 is open. Similarly, when the endotracheal tube 100 is inserted from the main trachea into one of the branch trachea, with the side opening 130 facing the other branch trachea, unilateral ventilation of one lung can be achieved if the side opening 130 is closed. It is particularly important to note that in any case, at least one lung must remain ventilated; otherwise, the body may suffer irreversible consequences due to the inability to perform effective gas exchange.

[0040] The channel switching assembly of this embodiment includes a blocking member 200 and a sealing member 300, as shown in Figures 3 and 4. The blocking member 200 is movably disposed on the tube body 100 and is used to block either the first channel 140 or the second channel 150, so that one of the first channel 140 and the second channel 150 is disconnected from the proximal opening 110, while the other is connected to the proximal opening 110. Furthermore, the sealing member 300 is disposed on the blocking member 200, and the sealing member 300 is used to cooperate with the blocking member 200 to disconnect the first channel 140 from the proximal opening 110 when the insertion part 800 is located within the first channel 140.

[0041] For example, the occlusion element 200 moves within the tube body 100 by means of movement. Of course, the occlusion element 200 can also rotate within the tube body 100, depending on the specific surgical scenario. It is important to note that before initial use, the occlusion element 200 is set by default to disconnect the proximal opening 110 from the second channel 150, while allowing the first channel 140 to connect with the proximal opening 110. In subsequent use, by moving the occlusion element 200, the system can be switched to connect the proximal opening 110 with the second channel 150, while disconnecting the proximal opening 110 from the first channel 140, depending on the specific surgical situation.

[0042] Based on this, there are several surgical scenarios with corresponding occlusion switching modes.

[0043] Scenario 1: When surgery is required on the affected lung, the endotracheal tube 100 is inserted from the main trachea of ​​the bronchus into the shunt connecting to the affected lung. The distal opening 120 of the tube 100 reaches or faces the lesion site on the affected lung, while the lateral opening 130 is located within the main trachea and faces the shunt connecting to the healthy lung. At this time, the first balloon 160 and the second balloon 170 are inflated through the catheter 180, gradually expanding from a contracted state to a fully inflated state. During inflation, the first balloon 160, located within the main trachea, exerts a resistance force against the inner wall of the main trachea, thus tightly adhering to the inner wall and blocking the airway of the main trachea. Simultaneously, the second balloon 170, located within the shunt, exerts a resistance force against the inner wall of the shunt, thus tightly adhering to the inner wall and blocking the airway of the shunt. In this state, the endotracheal tube is fixed between the main trachea and the shunt connecting the affected lung. The inflation of the first balloon 160 and the second balloon 170 completely isolates the main trachea from the shunt connecting the affected lung, blocking gas exchange in the affected lung and ensuring effective isolation of the surgical environment of the affected lung from the healthy lung. It is important to note that to ensure at least one lung remains ventilated at all times, the side opening 130 can be opened or closed. However, to prevent fluid generated in the affected lung during surgery from entering the healthy lung through the side opening 130, it is recommended that the side opening 130 be normally closed. In the above surgical scenario, the positioning and functional configuration of the endotracheal tube can be completed simply by inflating the first balloon 160 and the second balloon 170 to fix the tube body 100 within the main trachea.

[0044] Scenario 2: When surgery is required on the affected lung, and the bronchial tube connecting to the affected lung is accidentally scratched, causing bleeding: In this case, the surgery must be terminated. The bronchial tube connecting to the affected lung must first be blocked before hemostasis is performed. This is because the bleeding in the bronchial tube connecting to the affected lung is caused by the tube 100 extending from the main bronchus into the bronchial tube connecting to the affected lung. At this point, the segment of tube 100 with the distal opening 120 is already located within the bronchial tube connecting to the affected lung. In this situation, the first balloon 160 and the second balloon 170 are inflated to fix the tube 100 within the bronchus. Simultaneously, the second balloon 170 blocks the bronchial tube connecting to the affected lung, preventing blood from flowing out from the bleeding site in the bronchial tube connecting to the affected lung. Next, the occlusion element 200 is moved within the tube body 100, disconnecting the first channel 140 from the proximal opening 110 while simultaneously connecting the second channel 150 to the proximal opening 110. Since the first channel 140 is blocked after disconnection from the proximal opening 110, the distal opening 120 is also blocked, while the second channel 150 is connected, and the lateral opening 130 is open. This completely blocks the bronchus connecting to the affected lung, facilitating hemostasis. In the above surgical scenario, after fixing the tube body 100 within the main trachea by inflating the first balloon 160 and the second balloon 170, only one action is needed to open the lateral opening 130 and close the distal opening 120.

[0045] Scenario 3: When surgery is required on the affected lung, the inner wall of the main trachea may be accidentally scratched and bleeding may occur when the tube 100 is inserted into the main trachea. In this case, the surgery must be terminated. Insertion of the tube 100 should be paused, and the main trachea should be withdrawn until the bleeding site is positioned between the first balloon 160 and the second balloon 170. The first balloon 160 and the second balloon 170 should then be inflated to seal both sides of the bleeding site within the main trachea. Since the occlusion device 200 is defaulted to sealing the opening 130 on the blocking side while leaving the distal opening 120 open, no operation of the occlusion device 200 is required. The procedure in this case is similar to that in Scenario 1.

[0046] Scenario 4: When surgery is required on the affected lung, the inner wall of the junction of the two bronchial tubes may be accidentally scratched and bleeding may occur when the tube 100 is inserted into the main trachea. In this case, the surgery must be terminated, and the bleeding site must be sealed before hemostasis is performed. There are two options: First, the tube 100 can be continued into the bronchial tube connecting to the affected lung; second, the tube 100 can be inserted into the bronchial tube connecting to the healthy lung. Since the sealing component 200 is defaulted to sealing the opening 130 on the side and leaving the distal opening 120 open, there is no need to operate the sealing component 200. This seals off the space around the bleeding site, preventing airflow and further diffusion of blood. At the same time, because the distal opening 120 of the tube 100 is inserted into the bronchial tube after avoiding the bleeding site, airflow can still be achieved in the lungs.

[0047] Scenario 5: When surgery is required on the affected lung, the wall of the bronchial tube connecting to the affected lung is accidentally scratched, causing bleeding. At this point, the insertion part 800 has already extended from the distal opening 120 of the tube body 100 into the affected lung. The surgery must be terminated immediately. Due to the urgency, it will take some time for the insertion part 800 to extend from the tube body 100. Therefore, the insertion part 800 should be kept in its current position, and the bleeding site should be sealed before hemostasis is performed. In this situation, the first balloon 160 and the second balloon 170 are inflated to fix the tube body 100 inside the bronchus. Simultaneously, the second balloon 170 seals the bronchial tube connecting to the affected lung, preventing blood from flowing out from the bleeding site on the bronchial tube wall. Next, the occlusion element 200 is moved within the tube body 100, disconnecting the first channel 140 from the proximal opening 110 while simultaneously connecting the second channel 150 to the proximal opening 110. Since the first channel 140 is now blocked after disconnection from the proximal opening 110, the distal opening 120 is also blocked, while the second channel 150 remains connected, and the lateral opening 130 remains open. This completely blocks the bronchus connecting to the affected lung, facilitating hemostasis. It is worth noting that in the above operation, since there is an insertion part 800, when the sealing member 200 blocks the first channel 140, the sealing member 300 will cooperate with the sealing member 200 to block the first channel 140 where the insertion part 800 is located. This allows the sealing operation of the first channel 140 to be performed without the insertion part 800 needing to be removed from the first channel 140. This can greatly save the time of pulling the insertion part 800 out of the first channel 140, providing more operation time for surgery in crisis situations.

[0048] As can be seen, the above situations are listed for ease of understanding only. In reality, there are other situations that may occur during surgery, which will not be elaborated here. However, it should be understood that by selectively sealing the occlusion device 200 between the side opening 130 and the distal opening 120, surgeons can simplify the sealing control steps during clinical surgery and reduce the probability of misoperation in emergency situations. Furthermore, it can be understood that the opening and closing of the side opening 130 and the distal opening 120 are mutually exclusive in any surgical scenario; that is, if the side opening 130 needs to be open, then the distal opening 120 is closed. Conversely, if the side opening 130 needs to be closed, then the distal opening 120 is open. Therefore, by allowing the occlusion device 200 to selectively seal between the side opening 130 and the distal opening 120, various surgical situations can be effectively addressed, improving operational convenience and simplifying the procedure.

[0049] In some embodiments, referring to Figures 4, 5, and 6, the sealing member 200 includes a blocking portion 210. The blocking portion 210 is slidably disposed on the tube body 100 near the proximal opening 110. The blocking portion 210 is provided with a first through hole 211 and a second through hole 212, and the insertion portion 800 can extend to the distal opening 130 through the first through hole 211. The blocking portion 210 can switch between at least a first state and a second state during sliding. For example, when the sealing member 200 switches to the first state, the first through hole 211 connects the proximal opening 110 and the first channel 140, and the second channel 150 is disconnected from the proximal opening 110 under the blocking effect of the blocking portion 210; when the sealing member 200 switches to the second state, the second through hole 212 connects the proximal opening 110 and the second channel 150, and the first channel 140 is disconnected from the proximal opening 110 under the blocking effect of the blocking portion 210.

[0050] For example, a mounting portion 400 is provided near the proximal opening 110 of the tube body 100. The mounting portion 400 has a sliding cavity 410 communicating with the tube body 100, and the blocking portion 210 slides and seals with the sliding cavity 410. For example, when the sealing member 200 is switched to the first state, the first through hole 211 is located inside the tube body 100, and the second through hole 212 is located inside the sliding cavity 410. When the sealing member 200 is switched to the second state, the second through hole 212 is located inside the tube body 100, and the first through hole 211 is located inside the sliding cavity 410. For example, the mounting portion 400 can be integrally formed and then sleeved onto the tube body 100. Alternatively, the mounting portion 400 can also be formed by splicing two symmetrically arranged mounting sub-parts, which can improve the ease of installation between the mounting portion 400 and the tube body 100, and can also be easily disassembled and replaced when the mounting portion 400 is damaged.

[0051] With this configuration, when the sealing member 200 is switched to the first state, the second through hole 212 is located within the sliding cavity 410, and the port of the second through hole 212 facing the proximal opening 110 is blocked by the inner wall of the sliding cavity 410, thus directly disconnecting the passage between the second channel 150 and the proximal opening 110. Similarly, when the sealing member 200 is switched to the second state, the first through hole 211 is located within the sliding cavity 410, and the port of the first through hole 211 facing the proximal opening 110 is blocked by the inner wall of the sliding cavity 410, thus directly disconnecting the passage between the first channel 140 and the proximal opening 110. With this configuration, switching between the first and second states can be easily achieved simply by pushing and pulling the blocking part 210 within the sliding cavity 410. Furthermore, the thickness of the blocking part 210 is consistent with the height of the sliding cavity 410, and the blocking part 210 is configured as a polytetrafluoroethylene plate, which can improve the sealing effect while allowing it to slide smoothly within the sliding cavity 410.

[0052] In some optional embodiments, as shown in Figures 4, 5, and 6, the blocking portion 210 and the second channel 150 are spaced apart, and a retractable flexible tube 900 connects the second through hole 212 of the blocking portion 210 and the second channel 150. Specifically, the port of the second through hole 212 facing the proximal opening 110 is open, while the port of the second through hole 212 facing the distal opening 120 is connected to the port of the second channel 150 via the flexible tube 900. Furthermore, a receiving space is reserved on one side of the flexible tube 900 within the mounting portion 400 for the flexible tube 900 to be inserted. With this configuration, when the sealing member 200 switches to the first state, the second through hole 212 is located within the sliding cavity 410. The port of the second through hole 212 facing the proximal opening 110 is sealed and blocked by the inner wall of the sliding cavity. Since the port of the second through hole facing the distal opening 120 is connected to the second channel 150 via the flexible tube 900, the flexible tube 900 will directly move partially into the receiving space along with the movement of the blocking part 210, making the flexible tube 900 less susceptible to compression. For example, the length of the flexible tube 900 is greater than the straight-line distance between the port of the second through hole 212 facing the distal opening 120 and the port of the second channel 150 near the proximal opening 110, preventing the flexible tube 900 from being pulled off due to the movement of the blocking part 210.

[0053] For example, multiple steel sleeves are fitted on the outer wall of the hose 900 to prevent the hose 900 from folding during the movement of the blocking part 210, which would affect the flow of gas inside the hose 900.

[0054] In some optional embodiments, referring to Figures 7, 8, and 9, a notch (not shown) is provided in the second channel 150 opposite the blocking part 210 for the blocking part 210 to pass through. That is, when the blocking part 210 slides normally in the sliding cavity 410, it can pass through the second channel 150 through the notch, and the height of the notch is the same as the thickness of the blocking part 210. Further, the inner diameter of the second through hole 212 is the same as the inner diameter of the second channel 150. When the sealing member 200 is switched to the second state, the second through hole 212 and the second channel 150 are directly opposite each other in the axial direction of the tube body 100, and the first through hole 211 is located in the sliding cavity 410 and disconnected from the tube body 100. When the sealing member 200 is switched to the first state, the first through hole 211 moves out of the sliding cavity 410 and connects with the first channel 140, while the second through hole 212 moves into the sliding cavity 410 and disconnects from the tube body 100.

[0055] In some embodiments, as shown in Figures 9, 10, and 11, the blocking portion 210 is further provided with a third through hole 213 communicating with the first through hole 211, and the first rubber portion 500 is embedded in the third through hole 213. For example, the inner diameter of the first through hole 211 is larger than the outer diameter of the insertion portion 800, so that the insertion portion 800 can normally pass through the first through hole 211 and extend into the affected lung from the distal opening 120 of the tube body 100 when the sealing member 200 is switched to the first state. Further, when the insertion portion 800 passes through the first through hole 211, during the process of the sealing member 200 switching from the first state to the second state, the blocking portion 210 enters the third through hole 213, and the first rubber portion 500 deforms under the compression of the insertion portion 800 to circumferentially seal the insertion portion 800 within the third through hole 213. For example, the first rubber portion 500 is made of medical rubber. Examples include silicone rubber, natural rubber, nitrile rubber, fluororubber, thermoplastic elastomers, polyurethane rubber, and isoprene rubber.

[0056] For example, the third through hole 213 has a symmetrical guide slope 213a. Along the moving direction of the blocking part 210, the distance between the two guide slopes 213a gradually increases from the side away from the first through hole 211 to the side closer to the first through hole 211. This is so that when the blocking part 210 moves, while the insertion part 800 is squeezed against the first rubber part 500, the portions of the first rubber part 500 located on both sides of the insertion part 800 are circumferentially covered on the back side of the insertion part 800 under the guidance of the guide slope 213a.

[0057] With this configuration, when the insertion part 800 passes through the first through hole 211 and extends into the affected lung through the distal opening 120 for surgery, in case of emergency surgery, such as bronchial bleeding, immediate hemostasis is required. If there is not enough time to withdraw the insertion part 800 from the tube body 100, the insertion part 800 can be left in its current position, and the blocking part 210 can be operated directly to switch the sealing member 200 from the first state to the second state. During this process, the blocking part 210 will slide into the sliding cavity, allowing the first through hole 211 to gradually enter the sliding cavity. Since the insertion part 800 is in a fixed position, the first through hole 211 and the insertion part 800 will move relative to each other, causing the insertion part 800 to gradually and passively enter the third through hole 213 as the blocking part 210 moves. At this time, since the first rubber part 500 is provided in the third through hole 213, the first rubber part 500 will be relatively squeezed with the insertion part 800. The first rubber part 500 will be squeezed and deformed under its own elastic extension force, so that the part of the first rubber part 500 that is squeezed with the insertion part 800 moves and deflects from both sides of the insertion part 800. Since both sides of the insertion part 800 are guide slopes 213a, under the double blocking effect of the guide slopes 213a and the insertion part 800, the portion of the first rubber part 500 that is squeezed to both sides of the insertion part 800 will spread from the guide slopes 213a to the back of the insertion part 800 away from the first rubber part 500, until it completely covers the circumference of the insertion part 800. This means that when the insertion part 800 is inside the third through hole 213, the gap between the insertion part 800 and the third through hole 213 is completely sealed by the deformed first rubber part 500. As a result, even when the insertion part 800 is inside the tube body 100, the first channel 140 can still be sealed by the sealing member 200 and the sealing member 300, thus isolating the proximal opening 110 of the tube body 100 from the first channel 140.

[0058] It is worth noting that, since the symmetrical inclined planes are symmetrically arranged, as the insertion part 800 gradually enters the third through hole 213, the symmetrical inclined planes have a corrective effect on the insertion part 800. That is, the insertion part 800 will be affected by the two symmetrical inclined planes in the third through hole 213 and gradually return to the middle part of the third through hole 213. This makes the pressure distribution of the first rubber parts 500 on both sides of the insertion part 800 more uniform, and thus allows the first rubber parts 500 to better cover the insertion part 800 circumferentially under the deformation.

[0059] In some optional embodiments, referring to Figures 9, 10 and 11, the mounting part 400 is provided with a second rubber part 600, and a receiving groove 214 is provided on the side of the first through hole 211 away from the third through hole 213. When the sealing member 200 is switched to the first state, the second rubber part 600 is located in the receiving groove 214. For example, along the moving direction of the blocking part 210, the second rubber part 600 is directly opposite the first rubber part 500, and when the sealing member 200 is switched from the first state to the second state, the second rubber part 600 circumferentially covers the back side of the insertion part 800 away from the first rubber part 500.

[0060] Furthermore, the second rubber part 600 is also made of medical-grade rubber, such as silicone rubber, natural rubber, nitrile rubber, fluororubber, thermoplastic elastomers, polyurethane rubber, and isoprene rubber. With this arrangement, through the cooperation between the first rubber part 500 and the second rubber part 600, when the sealing member 200 switches from the first state to the second state, the circumferential direction of the insertion part 800 can be simultaneously covered by both the first rubber part 500 and the second rubber part 600, thereby completely sealing the gap between the third channel and the insertion part 800. This improves the sealing performance when the sealing member 200 is in the second state and the insertion part 800 is located in the third through hole 213.

[0061] For example, the receiving groove 214 is arc-shaped, and the second rubber part 600 is also arc-shaped. Meanwhile, in its natural state, the side of the first rubber part 500 near the second rubber part 600 is also arc-shaped. That is, when the sealing member 200 is in the first state, the first rubber part 500, the first through hole 211, and the second rubber part 600 form a complete circular hole. The inner diameter of this circular hole matches the inner diameter of the tube body 100 to facilitate the insertion of the insertion part 800 or other surgical instruments.

[0062] In some embodiments, referring to Figures 12 and 13, the sealing member 200 further includes a sliding portion 220. The inner wall of the sliding cavity 410 is provided with a limiting groove 420 that slides with the sliding portion 220. The limiting groove 420 has a first end and a second end. For example, the first end and the second end are the two ends of the limiting groove 420 along its own length direction. For example, when the sealing member 200 is in the first state, the sliding portion 220 is limited and stopped by the first end of the limiting groove 420; when the sealing member 200 is in the second state, the sliding portion 220 is limited and stopped by the second end of the limiting groove 420. This configuration makes the switching between the first state and the second state of the sealing member 200 more accurate. That is, when the operator moves the blocking portion 210 within the sliding cavity 410, as long as they feel that the blocking portion 210 is restricted and cannot continue to move during the movement, they can determine that the sealing member 200 is in the first state or the second state. At the same time, the stop-locking cooperation between the limiting groove 420 and the sliding part 220 can also prevent the blocking part 210 from coming out of the sliding cavity 410.

[0063] For example, referring to Figures 4, 5, and 6, the occlusion member 200 also includes a push-pull portion 230, which is located at the end of the blocking portion 210 away from the mounting portion 400. During the transition of the occlusion member 200 from the first state to the second state, the push-pull portion 230 gradually moves away from the mounting portion 400. That is, when the occlusion member 200 is in the first state, if it needs to be switched to the second state, the push-pull portion 230 needs to be pulled out of the mounting portion 400, rather than being pushed further into the mounting portion 400. This design prevents the surgeon from accidentally touching the occlusion member 200 during surgery, thus avoiding accidental state switching. This is because during clinical surgery, it is easy for the surgeon's hand to apply pushing force to the occlusion member 200, which can easily lead to accidental contact. Applying a pulling force to the occluder 200 requires deliberately pulling the push-pull part 230. In most clinical surgeries, the occluder 200 needs to be in the first state so that the insertion part 800 can pass through the first channel 140 and extend into the affected lung from the distal opening 120. Therefore, this setting makes it less likely for the occluder 200 to be accidentally activated in most surgical situations.

[0064] In some alternative embodiments, during the transition from the first state to the second state of the occlusion member 200, the push-pull portion 230 gradually approaches the mounting portion 400. That is, when the occlusion member 200 is in the first state, if a transition to the second state is required, the push-pull portion 230 needs to be pushed further into the mounting portion 400, rather than being pulled outwards from a position close to the mounting portion 400. This configuration allows the surgeon to more easily apply pushing force when transitioning from the first state to the second state during surgery (not shown in the figure).

[0065] For example, the push-pull part 230 is always located outside the mounting part 400, and the push-pull part 230 can be a push-pull ring, push-pull handle or other parts that are easy for the doctor to hold.

[0066] In some optional embodiments, as shown in FIG14, a blocking portion 700 is provided at one end of the second channel 150 near the proximal opening 110. The blocking portion 700 is used to block the port portion of the second channel 150. Along the direction from the distal opening 120 to the proximal opening 110, the blocking portion 700 gradually bends away from the first channel 140. With this configuration, the blocking portion 700 can prevent the insertion portion 800 from being mistakenly inserted into the second channel 150 after entering the tube body 100. Furthermore, if the insertion portion 800 enters the tube body 100 from the proximal opening 110 and comes into contact with the blocking portion 700, the bending configuration of the blocking portion 700 can guide the insertion portion 800 into the first channel 140, so that the insertion portion 800 automatically shifts from the blocking portion 700 into the first channel 140 during continued insertion, thereby improving the smoothness of the insertion portion 800 into the tube body 100.

[0067] The second aspect of this embodiment provides a detailed description of the endotracheal tube.

[0068] Referring to Figures 1, 2, and 3, the endotracheal tube of this embodiment includes a tube body 100. The tube body 100 has a proximal opening 110 on its proximal side and a distal opening 120 on its distal side. A side opening 130 is provided on the sidewall of the tube body 100. For example, the proximal opening 110 is located at the proximal end of the tube body 100, and the distal opening 120 is located at the distal end of the tube body 100; or, the proximal opening 110 is located on the sidewall near the proximal end of the tube body 100, the distal opening 120 is located on the sidewall near the distal end of the tube body 100, and the side opening 130 is located on the sidewall of the tube body 100 between the distal opening 120 and the proximal opening 110, with the side opening 130 being closer to the distal opening 120.

[0069] The endotracheal tube in this embodiment also includes a channel switching component. The channel switching component is the channel switching component of any technical solution in this embodiment.

Claims

1. A channel switching assembly for the body (100) of an endotracheal tube, the body (100) having a distal opening (120), a proximal opening (110), and a lateral opening (130), characterized in that, The tube body (100) is provided with a first channel (140) and a second channel (150) that are isolated from each other. The proximal end of the first channel (140) can be connected to the proximal opening (110) and the distal end can be connected to the distal opening (120). The proximal end of the second channel (150) can be connected to the proximal opening (110) and the distal end can be connected to the lateral opening (130). The first channel (140) is used for the insertion part (800) of the endoscope to be inserted. The channel switching assembly includes a blocking component (200), which is movably disposed in the tube body (100) for blocking the first channel (140) or the second channel (150) so that one of the first channel (140) and the second channel (150) is disconnected from the proximal opening (110) and the other is connected to the proximal opening (110); The channel switching assembly further includes a seal (300) disposed on the plug (200). The seal (300) is used to disconnect the first channel (140) from the proximal opening (110) in conjunction with the plug (200) when the insertion part (800) is located in the first channel (140).

2. The channel switching component according to claim 1, characterized in that, The sealing member (200) includes a blocking part (210), which is slidably disposed on the tube body (100) near the proximal opening (110). The blocking part (210) is provided with a first through hole (211) and a second through hole (212). The insertion part (800) can extend to the distal opening (130) through the first through hole (211). The blocking part (210) can switch between at least a first state and a second state during sliding. When the sealing member (200) is switched to the first state, the first through hole (211) connects the proximal opening (110) and the first channel (140), and the second channel (150) and the proximal opening (110) are disconnected under the sealing action of the blocking part (210); When the sealing member (200) is switched to the second state, the second through hole (212) connects the proximal opening (110) and the second channel (150), and the first channel (140) and the proximal opening (110) are disconnected under the sealing action of the blocking part (210).

3. The channel switching component according to claim 2, characterized in that, The tube body (100) is provided with a mounting part (400) near the proximal opening (110). The mounting part (400) has a sliding cavity (410) that communicates with the tube body (100). The blocking part (210) is in sliding sealing cooperation with the sliding cavity (410). When the sealing component (200) is switched to the first state, the first through hole (211) is located inside the tube body (100), and the second through hole (212) is located inside the sliding cavity (410); when the sealing component (200) is switched to the second state, the second through hole (212) is located inside the tube body (100), and the first through hole (211) is located inside the sliding cavity (410).

4. The channel switching component according to claim 3, characterized in that, The blocking part (210) is also provided with a third through hole (213) that communicates with the first through hole (211), and the third through hole (213) is provided with a first rubber part (500). When the insertion part (800) passes through the first through hole (211), during the process of the sealing member (200) switching from the first state to the second state, the blocking part (210) enters the third through hole (213), and the first rubber part (500) deforms under the squeezing action of the insertion part (800) to circumferentially seal the insertion part (800) within the third through hole (213).

5. The channel switching component according to claim 4, characterized in that, The third through hole (213) has a symmetrical guide slope (213a). Along the moving direction of the blocking part (210), the distance between the two guide slopes (213a) gradually increases from the side away from the first through hole (211) to the side close to the first through hole (211). This is so that when the blocking part (210) moves, while the insertion part (800) and the first rubber part (500) are squeezed, the portion of the first rubber part (500) located on both sides of the insertion part (800) is circumferentially covered on the back side of the insertion part (800) under the guidance of the guide slope (213a).

6. The channel switching component according to claim 4, characterized in that, The mounting part (400) is provided with a second rubber part (600), and a receiving groove (214) is provided on the side of the first through hole (211) away from the third through hole (213). When the sealing member (200) is switched to the first state, the second rubber part (600) is located in the receiving groove (214). Along the moving direction of the blocking part (210), the second rubber part (600) is directly opposite the first rubber part (500), and when the sealing member (200) switches from the first state to the second state, the second rubber part (600) circumferentially covers the back of the insertion part (800) away from the first rubber part (500).

7. The channel switching component according to any one of claims 3-6, characterized in that, The sealing component (200) further includes a sliding part (220), and the inner wall of the sliding cavity (410) is provided with a limiting groove (420) that slides with the sliding part (220). The limiting groove (420) has a first end and a second end. When the sealing member (200) is in the first state, the sliding part (220) is stopped and abutted against the first end of the limiting groove (420). When the sealing member (200) is in the second state, the sliding part (220) is stopped and abutted against the second end of the limiting groove (420).

8. The channel switching component according to any one of claims 3-6, characterized in that, The sealing member (200) further includes a push-pull portion (230), which is located at the end of the blocking portion (210) away from the mounting portion (400). During the process of the sealing member (200) switching from the first state to the second state, the push-pull part (230) gradually moves away from the mounting part (400); or, during the process of the sealing member (200) switching from the first state to the second state, the push-pull part (230) gradually moves closer to the mounting part (400).

9. The channel switching component according to any one of claims 3-6, characterized in that, The second channel (150) has a shielding portion (700) at one end near the proximal opening (110), the shielding portion (700) is used to shield the port portion of the second channel (150); along the direction from the distal opening (120) to the proximal opening (110), the shielding portion (700) gradually bends away from the first channel (140).

10. A tracheal tube, characterized in that, Includes a tube body (100), the tube body (100) having a proximal opening (110) on its proximal side, a distal opening (120) on its distal side, and a side opening (130) on the sidewall of the tube body (100). The endotracheal tube further includes a channel switching component, which is the channel switching component according to any one of claims 1-9.

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