Opening switching mechanism and tracheal catheter

Abstract

Disclosed are an opening switching mechanism and a tracheal catheter. The present invention relates to the technical field of medical devices. The opening switching mechanism is used on a tube body of the tracheal catheter. A side wall of the tube body is provided with a first opening, and a distal end portion of the tube body is provided with a second opening. The opening switching mechanism comprises an inner tube slidably arranged in the tube body. A side wall of the inner tube is provided with a communication opening, and a distal end of the inner tube is provided with a deformation assembly. The deformation assembly has at least a first state in which the second opening is opened and a second state in which the second opening is closed. Moreover, on the basis of the sliding of the inner tube, the communication opening and the first opening are completely misaligned, and the deformation assembly is in the first state; or the communication opening and the first opening at least partially overlap, and the deformation assembly is in the second state. The opening switching mechanism enables switching between states of the first opening and the second opening in just one step.

Description

An opening switching mechanism and endotracheal tube Technical Field

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

[0002] An endotracheal tube is a medical device inserted into a patient's trachea and / or bronchi to create a temporary artificial breathing channel for the patient, especially those who are unable to breathe independently.

[0003] Endotracheal tubes are classified into single-lumen and double-lumen types. A single-lumen endotracheal tube has an inflatable balloon at the distal end of the airway. Inflating the balloon seals the distal airway, thus closing the distal opening. A movable occlusion flap is also present within the airway; moving the flap opens or closes the lateral opening. In related technologies, the opening and closing of the distal and lateral openings are independently controlled. To achieve unilateral ventilation, at least two actions are required: closing the distal opening and opening the lateral opening. However, in clinical surgery, situations involving tracheal bleeding often leave surgeons only a few minutes to manage the bleeding. The independent control of the distal and lateral openings makes the operation of single-lumen endotracheal tubes cumbersome, necessitating simplification. Summary of the Invention

[0004] This invention discloses an opening switching mechanism and a tracheal tube to solve the technical problem of cumbersome operation steps in the single-lumen tracheal tube in the related technology when achieving unilateral ventilation.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] The opening switching mechanism of the present invention is used on the tube body of an endotracheal tube. The tube body has a first opening on its side wall and a second opening at its distal end. The opening switching mechanism includes an inner tube that is slidably disposed within the tube body. A communication port is provided on the side wall of the inner tube, and a deformation component is provided at the distal end of the inner tube. The deformation component has at least a first state that opens the second opening and a second state that closes the second opening. Based on the sliding of the inner tube, the communication port is completely misaligned with the first opening, and the deformation component is in the first state; or the communication port is at least partially overlapped with the first opening, and the deformation component is in the second state.

[0007] The endotracheal tube of the present invention includes a tube body, a first opening on the side wall of the tube body, and a second opening at the distal end of the tube body. The endotracheal tube also includes an opening switching mechanism, which is an opening switching mechanism according to any technical solution of the present invention. The opening switching mechanism is used to control the opening and closing of the first opening and the second opening.

[0008] The technical solution adopted in this invention can achieve the following beneficial effects:

[0009] The opening switching mechanism of this invention, based on the sliding of the inner tube, enables the endotracheal tube to achieve different air intake modes, facilitating operations such as air supply, hemostasis, or surgery on the affected lung side. Specifically, when the connecting port is completely misaligned with the first opening and the deformation component is in the first state, the endotracheal tube is in a state where the first opening is closed and the second opening is open, allowing air intake or instrument insertion through the second opening; when the connecting port at least partially overlaps with the first opening and the deformation component is in the second state, the endotracheal tube is in a state where the first opening is open and the second opening is closed, allowing air intake through the first opening and lung isolation.

[0010] Furthermore, in the opening switching mechanism of the present invention, the connecting port is located on the side wall of the inner tube, and the deformation component is located at the distal end of the inner tube. The sliding of the inner tube can drive the connecting port and the deformation component to slide simultaneously, thereby enabling the connecting port and the deformation component to simultaneously control the opening and closing of the first and second openings. In other words, the opening switching mechanism of the present invention can simultaneously control the switching between the first and second opening states with a single action, improving the switching efficiency between the first and second opening states and simplifying the operation steps of the endotracheal tube. Attached Figure Description

[0011] The accompanying drawings described below are merely some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0012] Figure 1 is a schematic diagram of the first opening of the endotracheal tube in the first embodiment of this application being closed and the second opening being open;

[0013] Figure 2 is a schematic diagram of the first opening of the endotracheal tube in the first embodiment of this application being in the open state and the second opening being in the closed state;

[0014] Figure 3 is an exploded view of Figure 1;

[0015] Figure 4 is a partial schematic diagram of the inner tube in Figure 2;

[0016] Figure 5 is a partial schematic diagram of the inner tube in another embodiment of this application;

[0017] Figure 6 is a partial schematic diagram of the inner tube in another embodiment of this application;

[0018] Figure 7 is a partial schematic diagram of Figure 6;

[0019] Figure 8 is a schematic diagram of the first opening of the endotracheal tube in the closed state and the second opening in the open state according to the second embodiment of this application;

[0020] Figure 9 is a schematic diagram of the first opening of the endotracheal tube in the open state and the second opening in the closed state according to the second embodiment of this application;

[0021] Figure 10 is a partial schematic diagram of the inner tube in Figure 8;

[0022] Figure 11 is a partial schematic diagram of the inner tube in Figure 9;

[0023] Figure 12 is a schematic diagram of the first and second membranes covering the base ring;

[0024] Figure 13 is a partial schematic diagram of Figure 12;

[0025] Figure 14 is a schematic diagram of the first opening of the endotracheal tube in the closed state and the second opening in the open state according to the third embodiment of this application;

[0026] Figure 15 is a schematic diagram of the first opening of the endotracheal tube in the open state and the second opening in the closed state according to the third embodiment of this application;

[0027] Figure 16 is a partial schematic diagram of the inner tube in Figure 14;

[0028] Figure 17 is a partial schematic diagram of the inner tube in Figure 15.

[0029] In the figure: 100, inner tube; 110, connecting port; 120, first prefabricated component; 121, first sealing part; 130, second prefabricated component; 131, second sealing part; 140, base ring; 150, first diaphragm; 160, second diaphragm; 170, rack; 180, guide ring; 181, guide surface; 191, groove; 192, notch; 210, lever; 300, tube body; 310, first opening; 320, second opening; 330, groove; 340, first balloon; 350, second balloon; 360, first balloon catheter; 370, second balloon catheter. Detailed Implementation

[0030] The embodiments described below are merely some, not all, of the embodiments of the present invention. All other implementations derived by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] In this application, "near end" and "far end" refer to the relative positions of each component to the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0032] In related technologies, the opening and closing of the end opening and side opening of the endotracheal tube are independently controlled by an inflatable balloon and an occlusion plate. When achieving unilateral ventilation, at least two actions are required: controlling the closure of the end opening and controlling the opening of the side opening, making the operation of a single-lumen endotracheal tube cumbersome. Therefore, this application provides an opening switching mechanism that can simultaneously control the switching of two opening states. When switching the air intake mode of the endotracheal tube, only one operation is needed to complete the opening switching, simplifying the operation of the endotracheal tube.

[0033] The opening switching mechanism and endotracheal tube provided in this application will be described in detail below with reference to Figures 1 to 17, through specific embodiments and application scenarios.

[0034] The opening switching mechanism of this embodiment is used on the tube body 300 of the endotracheal tube. The tube body 300 has a first opening 310 on its side wall and a second opening 320 at its distal end, as shown in Figures 1 and 2. Exemplarily, the tube body 300 is also provided with a first balloon 340, a second balloon 350, a first balloon catheter 360, and a second balloon catheter 370. The first balloon catheter 360 is used to supply air and / or deflate the first balloon 340, and the second balloon catheter 370 is used to supply air and / or deflate the second balloon 350, as shown in Figures 1 and 2. Inflating the first balloon 340 and the second balloon 350 allows them to expand, thus securing the endotracheal tube within the trachea. Exemplarily, the first balloon 340 and the second balloon 350 can be inflated or deflated simultaneously, or independently.

[0035] For example, the second balloon 350 is located distal to the first balloon 340, as shown in Figures 1 and 2. A first opening 310 is located between the first balloon 340 and the second balloon 350, and a second opening 320 is located distal to the second balloon 350, as shown in Figures 1 and 2. This endotracheal tube allows for unilateral lung intake by opening the first opening 310 and closing the second opening 320; and allows for bilateral lung intake by closing the first opening 310 and opening the second opening 320.

[0036] The opening switching mechanism of this embodiment includes an inner tube 100, which is slidably disposed within a tube body 300, as shown in Figures 1-4. For example, the outer diameter of the inner tube 100 is approximately equal to the inner diameter of the tube body 300, so that when the inner tube 100 is placed within the tube body 300, the inner tube 100 and the tube body 300 fit together. A connecting port 110 is provided on the side wall of the inner tube 100, penetrating through the side wall of the inner tube 100, thereby allowing the connecting port 110 to communicate with the inner cavity of the inner tube 100, as shown in Figure 3. A deformation component is provided at the distal end of the inner tube 100, the deformation component having at least a first state that opens the second opening 320 and a second state that closes the second opening 320. Figures 3 and 4 show schematic diagrams of the deformation component in the first and second states.

[0037] For example, the deformation component and the inner tube 100 are an integral structure; or the deformation component is fixedly connected to the distal end of the inner tube 100; or the deformation component is detachably connected to the distal end of the inner tube 100; or the deformation component is in contact with the distal end of the inner tube 100. This allows the connecting port 110 and the deformation component to move simultaneously with the sliding of the inner tube 100 when the inner tube 100 slides.

[0038] The deformable component mentioned in this embodiment refers to a component that has different forms under the action of external force or under preset triggering conditions. The external force mentioned in this embodiment is, for example, compressive force, elastic force, or constraint force; the preset triggering conditions mentioned in this embodiment are, for example, preset temperature or preset position. For example, the deformable component may have a connected state, in which case when the deformable component is located at the second opening 320, it will not obstruct the connectivity of the second opening 320, that is, the second opening 320 can be in an open state, as shown in Figures 1 and 3; the deformable component may also have a sealed state, in which case when the deformable component is located at the second opening 320, it will block the second opening 320, preventing gas and / or liquid from passing through the second opening 320, that is, the second opening 320 is in a closed state, as shown in Figures 2 and 4.

[0039] In some embodiments, the inner tube 100 is in a first position or a second position based on the sliding of the inner tube 100. When the inner tube 100 is in the first position or the second position, the endotracheal tube can achieve different air intake modes to facilitate operations such as air supply, hemostasis, or surgery on the affected lung side.

[0040] For example, when the inner tube 100 is in the first position, the connecting port 110 is completely misaligned with the first opening 310, and the deformation component is in the first state. Specifically, with the connecting port 110 completely misaligned with the first opening 310, the first opening 310 can be blocked by the side wall of the inner tube 100, making the first opening 310 closed; at this time, the deformation component is in the first state, making the second opening 320 open, at which time air can be introduced or instruments can be inserted through the second opening 320, as shown in Figures 1 and 3.

[0041] For example, when the inner tube 100 is in the second position, the connecting port 110 at least partially overlaps with the first opening 310, and the deformation component is in the second state. Preferably, the size of the connecting port 110 may be slightly larger than the size of the first opening 310. The connecting port 110 and the first opening 310 may partially overlap or completely overlap, preferably completely overlapping. Specifically, the connecting port 110 and the first opening 310 at least partially overlap, in which case they can communicate through the connecting port 110 and the first opening 310, so that the first opening 310 is in the open state; at this time, the deformation component is in the second state, so that the second opening 320 is in the closed state, and air can be introduced from the first opening 310 for lung isolation, as shown in Figures 2 and 4.

[0042] In this embodiment, the opening switching mechanism has a connecting port 110 located on the side wall of the inner tube 100, and a deformation component located at the distal end of the inner tube 100. The sliding of the inner tube 100 causes the connecting port 110 and the deformation component to slide simultaneously, thereby allowing the connecting port 110 and the deformation component to simultaneously control the opening and closing of the first opening 310 and the second opening 320. In other words, this opening switching mechanism can simultaneously control the switching between the states of the first opening 310 and the second opening 320 with a single action, improving the switching efficiency of the first opening 310 and the second opening 320 states and simplifying the operation steps of the endotracheal tube.

[0043] This application provides various specific implementations of deformable components, but is not limited thereto; deformable components may also be other structures.

[0044] In some embodiments, the deformable component includes a first preform 120. When the first preform 120 is located inside the tube 300, the first preform 120 has a tubular structure, and the deformable component is in a first state, as shown in Figures 1 and 3; when the first preform 120 is located outside the tube 300, the first preform 120 forms a first sealing portion 121, and the deformable component is in a second state, as shown in Figures 2 and 4. Exemplarily, the first preform 120 can be a structure made of shape memory alloy material, such as nickel-titanium alloy, copper-zinc-aluminum alloy, copper-aluminum-nickel alloy, etc. Shape memory alloy materials, especially nickel-titanium alloys, have good biocompatibility and a recovery temperature suitable for human body temperature, and are advantageous in terms of safety and reliability when used to prepare the first preform 120.

[0045] Specifically, the first preform 120 is prefabricated in a "duckbill" shape. When the first preform 120 is located inside the tube 300, it is constrained by the tube 300 and forms a tubular structure. At this time, the deformation component is in the first state, as shown in Figures 1 and 3. When the inner tube 100 slides to the distal end and the first preform 120 is located outside the tube 300, it is no longer constrained by the tube 300 and can return to its prefabricated "duckbill" shape. Specifically, when the first preform 120 returns to its prefabricated "duckbill" shape, it forms a first sealing part 121 and puts the deformation component in the second state, as shown in Figures 2 and 4.

[0046] As can be seen, sliding the inner tube 100 towards the proximal end allows the first preform 120 to reposition itself within the tube body 300, at which point the deformation component can switch from the second state back to the first state.

[0047] In this embodiment, the first preform 120 can be placed inside or outside the tube body 300, so that the first preform 120 can be in different forms, thereby opening or closing the second opening 320, and thus switching the state of the second opening 320.

[0048] In some embodiments, the entire first preform 120 is formed as a first sealing portion 121, thereby ensuring the sealing performance of the first preform 120.

[0049] In some embodiments, the distal end of the first preform 120 is formed as a first sealing portion 121. When the distal end of the first preform 120 is formed as the first sealing portion 121, the width of the first sealing portion 121 in the axial direction of the tube body 300 satisfies: L1 ≥ 1 / 2 L2. Wherein, L1 is the width of the first sealing portion 121 in the axial direction of the tube body 300, and L2 is the width of the first sealing portion 121 in the radial direction of the tube body 300.

[0050] In this embodiment, when the distal end of the first preform 120 is formed as the first sealing part 121, the sealing performance of the first sealing part 121 can be enhanced by limiting the width of the first sealing part 121 in the axial direction of the tube body 300, thus preventing the first sealing part 121 from leaking air under the impact of airflow.

[0051] In some embodiments, the deformable component further includes a second preform 130. The second preform 130 is located within the first preform 120. When the first preform 120 is located within the tube body 300, the second preform 130 has a tubular structure; when the first preform 120 is located outside the tube body 300, the proximal end of the second preform 130 forms a second sealing portion 131, and the sidewall of the second preform 130 is at least partially abutted against the sidewall of the first preform 120, as shown in Figures 6 and 7. The material of the second preform 130 may be the same as that of the first preform 120, and will not be described further here.

[0052] As shown in Figure 7, the distal end of the first preform 120 is formed as the first sealing part 121, and the proximal end of the second preform 130 is formed as the second sealing part 131. This allows the openings of the first preform 120 and the second preform 130 to be positioned opposite each other, i.e., the opening of the first preform 120 faces the proximal end, and the opening of the second preform 130 faces the distal end. In addition, the sidewall of the second preform 130 is at least partially attached to the sidewall of the first preform 120. This can alleviate the impact of airflow on the first sealing part 121 and ensure that the first sealing part 121 has good sealing performance.

[0053] In some embodiments, the deformation component and the inner tube 100 are separate structures. This means that the deformation component and the inner tube 100 can be separated from each other under external force.

[0054] In some embodiments, the deformation assembly includes a base ring 140, as shown in FIG10. The base ring 140 is a hollow annular structure. The base ring 140 can serve as a mounting base. The base ring 140 is mounted on the inner wall of the tube 300 and fits against the inner wall of the tube 300. Exemplarily, the base ring 140 is provided with a first diaphragm 150 and a second diaphragm 160, as shown in FIGS. 10-13. For example, the first diaphragm 150 and the second diaphragm 160 are thin films made of elastic material, so that the first diaphragm 150 and the second diaphragm 160 can be sleeved on the distal end of the inner tube 100, or can cover the end of the base ring 140.

[0055] Specifically, when the first diaphragm 150 and the second diaphragm 160 are fitted onto the distal end of the inner tube 100, the first diaphragm 150 and the second diaphragm 160 form a tubular structure. At this time, the deformation component is in the first state, and the second opening 320 is in the open state, as shown in Figures 8 and 10. When the inner tube 100 moves towards the proximal end and the first diaphragm 150 and the second diaphragm 160 separate from the inner tube 100, the first diaphragm 150 and the second diaphragm 160 close the opening of the base ring 140. At this time, the deformation component is in the second state, and the second opening 320 is in the closed state, as shown in Figures 9 and 11.

[0056] In some embodiments, when the first diaphragm 150 and the second diaphragm 160 are fitted onto the distal end of the inner tube 100, the proximal end of the inner tube 100 can be inserted into the base ring 140, and then the inner tube 100 can be pulled so that the distal end of the inner tube 100 is located at the base ring 140. Alternatively, the first diaphragm 150 and the second diaphragm 160 can be directly spread apart and fitted onto the distal end of the inner tube 100.

[0057] In this embodiment, the deformation component can be in different states by having the first diaphragm 150 and the second diaphragm 160 sleeved on the far end of the inner tube 100 or covering the end of the base ring 140, thereby realizing the opening or closing of the second opening 320 and thus the switching of the state of the second opening 320.

[0058] In some embodiments, when the first diaphragm 150 and the second diaphragm 160 close the opening of the base ring 140, the area of ​​the first diaphragm 150 at the opening of the base ring 140 satisfies: S1 ≥ 1 / 2 S0, and the area of ​​the second diaphragm 160 at the opening of the base ring 140 satisfies: S2 ≥ 1 / 2 S0. S0 is the area at the opening of the base ring 140, S1 is the area of ​​the first diaphragm 150 at the opening of the base ring 140, and S2 is the area of ​​the second diaphragm 160 at the opening of the base ring 140. That is, as shown in Figures 12 and 13, when the first diaphragm 150 and the second diaphragm 160 close the opening of the base ring 140, the area of ​​the first diaphragm 150 at the opening of the base ring 140 is greater than half the area of ​​the opening of the base ring 140, and the area of ​​the second diaphragm 160 at the opening of the base ring 140 is greater than half the area of ​​the opening of the base ring 140. This allows the first diaphragm 150 and the second diaphragm 160 to at least partially overlap at the opening of the base ring 140.

[0059] In this embodiment, at the opening of the base ring 140, the first diaphragm 150 and the second diaphragm 160 at least partially overlap. When the airflow passes over the upper or lower surface of the first diaphragm 150 and the second diaphragm 160 and is impacted by the airflow, the overlapping part of the first diaphragm 150 and the second diaphragm 160 can fit more tightly, thereby enhancing the sealing performance at the opening of the base ring 140.

[0060] In some embodiments, the deformation assembly includes a plurality of racks 170 located at the distal end of the inner tube 100, as shown in Figures 14-17. The plurality of racks 170 are uniformly distributed along the circumferential direction of the inner tube 100. Exemplarily, the width of the racks 170 gradually decreases from the proximal end to the distal end, and the distal ends of the racks 170 are formed into a sharp structure, as shown in Figure 16. The sharp distal ends of the racks 170 allow them to close together to form a tapered structure with a distally closed end, as shown in Figure 17. Exemplarily, the sides of adjacent racks 170 that contact each other are beveled, thereby enhancing the sealing at the contact surfaces of adjacent racks 170 when the plurality of racks 170 are closed.

[0061] In some embodiments, the deformation assembly further includes a guide ring 180 fixed within the tube 300. A guide surface 181 is formed at the proximal end of the guide ring 180, and the guide surface 181 is inclined. As shown in FIG16, the guide surface 181 is located near the proximal end of the inner wall of the guide ring 180. From the proximal end to the distal end, the guide surface 181 gradually inclines towards the center of the guide ring 180. In this embodiment, the sliding of the inner tube 100 can drive the rack 170 to slide along the guide surface 181, thereby allowing multiple racks 170 to form different shapes.

[0062] Specifically, when the rack 170 separates from the guide ring 180, the distal ends of the multiple racks 170 separate from each other. At this time, the deformation assembly is in the first state, and the second opening 320 is in the open state, as shown in Figures 14 and 16. When the inner tube 100 slides to the distal end, and the rack 170 is located inside the guide ring 180, the outer wall of the rack 170 contacts the guide surface 181 and the multiple racks 170 form a closed conical structure (specifically, the sides and distal ends of the conical structure are closed). At this time, the deformation assembly is in the second state, and the second opening 320 is in the closed state, as shown in Figures 15 and 17.

[0063] As can be seen, sliding the inner tube 100 towards the proximal end can cause the distal ends of the multiple racks 170 to separate from each other again, at which point the deformation assembly can switch from the second state back to the first state.

[0064] As can be seen, when multiple racks 170 are gathered into a conical structure, even if they are impacted by airflow, the guide ring 180 constrains and restricts the racks 170, making it less likely for air leakage to occur at the far end of the conical structure.

[0065] In this embodiment, the deformation component can be in different forms by separating or retracting multiple racks 170, thereby opening or closing the second opening 320 and switching the state of the second opening 320.

[0066] In some embodiments, the inner tube 100 is provided with a mounting portion for mounting the balloon catheter on the tube body 300. For example, the tube body 300 is provided with a first balloon 340, a second balloon 350, a first balloon catheter 360, and a second balloon catheter 370. The first balloon catheter 360 is used to supply air and / or vent air to the first balloon 340, and the second balloon catheter 370 is used to supply air and / or vent air to the second balloon 350. The mounting portion for mounting the first balloon catheter 360 and the second balloon catheter 370 can prevent interference between the first balloon catheter 360 and the second balloon catheter 370 and the inner tube 100, thus avoiding affecting the sliding of the inner tube 100.

[0067] For example, the mounting portion is a groove 191 provided on the outer wall of the inner tube 100, as shown in FIG4. The groove 191 is provided along the axial direction of the inner tube 100. The first balloon catheter 360 and the second balloon catheter 370 are placed in the groove 191.

[0068] For example, the mounting part is a notch 192 provided in the wall of the inner tube 100, as shown in FIG5. The notch 192 is provided along the axial direction of the inner tube 100. The notch 192 penetrates the wall of the inner tube 100. The first balloon catheter 360 and the second balloon catheter 370 are placed in the notch 192.

[0069] In some embodiments, the opening switching mechanism further includes a driving component for driving the inner tube 100 to slide. For example, the tube body 300 is provided with a sliding groove 330. The driving component includes a toggle block 210 and a connecting block disposed on the inner tube 100. The toggle block 210 is connected to the connecting block, and the toggle block 210 and the connecting block are slidably disposed at the sliding groove 330, as shown in Figures 1, 2, 8, 9, 14, and 15. By toggling the toggle block 210, the inner tube 100 can be slid, thereby achieving the switching between the states of the first opening 310 and the second opening 320. In the opening switching mechanism of the present invention, the toggle block 210 is located outside the tube body 300. Applying force outside the tube body 300 controls the toggle block 210. This method of applying force outside the tube body 300 has the advantages of convenient operation and high reliability.

[0070] For example, the distance between the connecting block and the proximal end of the inner tube 100 is greater than the length of the groove 330 in the axial direction of the tube body 300, so that when the inner tube 100 slides, the opening at the groove 330 can be blocked by the wall of the inner tube 100.

[0071] Not limited to this, the opening at the groove 330 can also be sealed by a sealing ring or sealing plate connected to the lever 210. Specifically, the sealing ring or sealing plate is located outside the tube body 300, and the length of the sealing ring or sealing plate is greater than the length of the groove 330 in the axial direction of the tube body 300, so that when the inner tube 100 slides, the opening at the groove 330 can be sealed by the sealing ring or sealing plate.

[0072] The endotracheal tube of this embodiment includes a tube body 300, as shown in Figures 1, 2, 8, 9, 14, and 15. The tube body 300 forms an airway space for gas to pass through. Exemplarily, the tube body 300 is further provided with a first balloon 340, a second balloon 350, a first balloon catheter 360, and a second balloon catheter 370. The first balloon catheter 360 is used to supply air and / or vent air to the first balloon 340, and the second balloon catheter 370 is used to supply air and / or vent air to the second balloon 350, as shown in Figures 1, 2, 8, 9, 14, and 15. Inflating the first balloon 340 and the second balloon 350 allows them to expand, securing the endotracheal tube within the trachea. Exemplarily, the second balloon 350 is located distal to the first balloon 340, as shown in Figures 1, 2, 8, 9, 14, and 15.

[0073] In some embodiments, the tube body 300 has a first opening 310 on its sidewall and a second opening 320 at its distal end. For example, the first opening 310 is located between the first balloon 340 and the second balloon 350, and the second opening 320 is located at the distal end of the second balloon 350, as shown in Figures 1, 2, 8, 9, 14 and 15.

[0074] In some embodiments, the endotracheal tube further includes an opening switching mechanism. The opening switching mechanism is the opening switching mechanism of any technical solution in this embodiment, and is used to control the opening and closing of the first opening 310 and the second opening 320. For example, through the control of the opening switching mechanism, one of the first opening 310 and the second opening 320 can be in an open state, and the other in a closed state, as shown in Figures 1, 2, 8, 9, 14, and 15.

[0075] The endotracheal tube of this embodiment can realize different air intake modes to facilitate operations such as air supply, hemostasis, or surgery on the affected lung side; moreover, the endotracheal tube of this embodiment can also improve the switching efficiency of the first opening 310 state and the second opening 320 state, and simplify the operation steps of the endotracheal tube.

[0076] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An opening switching mechanism for use on the body of an endotracheal tube, wherein the side wall of the tube body has a first opening and the distal end of the tube body has a second opening, characterized in that, The opening switching mechanism includes an inner tube, which is slidably disposed within the tube body; The inner tube has a communication port on its side wall, and a deformation component is provided at the distal end of the inner tube. The deformation component has at least a first state that opens the second opening and a second state that closes the second opening. Based on the sliding of the inner tube, the connecting port is completely misaligned with the first opening, and the deformation component is in a first state; or the connecting port at least partially overlaps with the first opening, and the deformation component is in a second state.

2. The opening switching mechanism according to claim 1, characterized in that, The deformation component includes a first preform, and When the first preform is located inside the tube, the first preform is a tubular structure, and the deformation component is in a first state; When the first preform is located outside the tube body, the first preform has a first sealing portion and puts the deformation component in a second state.

3. The opening switching mechanism according to claim 2, characterized in that, The distal end of the first preform is formed as a first sealing portion, and the width of the first sealing portion in the axial direction of the tube body satisfies: L1 ≥ 1 / 2 L2. Wherein, L1 is the width of the first sealing part in the axial direction of the pipe body, and L2 is the width of the first sealing part in the radial direction of the pipe body.

4. The opening switching mechanism according to claim 2, characterized in that, The deformation component further includes a second preform located within the first preform. When the first preform is located inside the tube, the second preform is a tubular structure; when the first preform is located outside the tube, the proximal end of the second preform is formed as a second sealing portion, and the sidewall of the second preform is at least partially attached to the sidewall of the first preform.

5. The opening switching mechanism according to claim 1, characterized in that, The deformation assembly and the inner tube are separate structures. The deformation assembly includes a base ring, on which at least a first diaphragm and a second diaphragm are provided. When the first diaphragm and the second diaphragm are sleeved on the distal end of the inner tube, the first diaphragm and the second diaphragm form a tubular structure, and the deformation component is in a first state; When the first diaphragm and the second diaphragm are separated from the inner tube, the first diaphragm and the second diaphragm close the opening of the base ring and put the deformation assembly in the second state.

6. The opening switching mechanism according to claim 5, characterized in that, When the first diaphragm and the second diaphragm close the opening of the base ring, the area of ​​the first diaphragm at the opening of the base ring satisfies: S1 ≥ 1 / 2 S0, and the area of ​​the second diaphragm at the opening of the base ring satisfies: S2 ≥ 1 / 2 S0. Wherein, S0 is the area at the opening of the base ring, S1 is the area of ​​the first diaphragm at the opening of the base ring, and S2 is the area of ​​the second diaphragm at the opening of the base ring.

7. The opening switching mechanism according to claim 1, characterized in that, The deformation assembly includes a plurality of racks located at the distal end of the inner tube, the width of which gradually decreases from the proximal end to the distal end, and the distal end of the racks is formed into a sharp structure. The deformation assembly further includes a guide ring fixed within the tube body, the proximal end of which forms a guide surface, the guide surface being inclined, and... When the rack separates from the guide ring, the distal ends of the plurality of racks separate from each other, and the deformation assembly is in a first state; When the rack is located inside the guide ring, the outer wall of the rack contacts the guide surface and the plurality of racks form a closed conical structure, and the deformation component is in the second state.

8. The opening switching mechanism according to any one of claims 1 to 7, characterized in that, The inner tube is provided with a mounting part for mounting the balloon catheter on the tube body, and The mounting part is a groove provided on the outer wall of the inner tube, or the mounting part is a notch that penetrates the wall of the inner tube.

9. The opening switching mechanism according to any one of claims 1 to 7, characterized in that, It also includes a drive component for driving the inner tube to slide, and The tube body is provided with a sliding groove, and the driving component includes a toggle block and a connecting block provided on the inner tube. The toggle block is connected to the connecting block, and the toggle block and the connecting block are slidably disposed in the sliding groove.

10. A tracheal tube, characterized in that, The tube includes a pipe body, the pipe body having a first opening on its side wall and a second opening at its distal end. The endotracheal tube further includes an opening switching mechanism, which is the opening switching mechanism according to any one of claims 1 to 9, and the opening switching mechanism is used to control the opening and closing of the first opening and the second opening.

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