Opening switching mechanism and tracheal tube

Abstract

The present invention discloses an opening switching mechanism and an endotracheal tube, and relates to the technical field of medical devices. The opening switching mechanism of the present invention is used on the tube body of the endotracheal tube, and the side wall of the tube body has a first opening, and the distal end of the tube body has a second opening. The opening switching mechanism includes an inner tube, and the inner tube can be slidably arranged in the tube body; a connecting 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 in which the second opening is opened and a second state in which the second opening is closed, and based on the sliding of the inner tube, the connecting port is completely misaligned with the first opening, and the deformation component is in the first state, or the connecting port and the first opening at least partially overlap, and the deformation component is in the second state. The opening switching mechanism can complete the switching between the first opening and the second opening state in only one step, thereby improving the switching efficiency between the first opening and the second opening state, and simplifying the operation steps of the endotracheal tube.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an opening switching mechanism and a tracheal tube. Background Art

[0002] An endotracheal tube is a medical device that is inserted into the patient's trachea and / or bronchi to create a temporary artificial breathing channel for the patient, especially for those who cannot breathe independently. An endotracheal tube can also be used for lung isolation during surgery to protect the healthy lung from contamination by secretions or blood drained from the affected lung.

[0003] Tracheal tubes are divided into single-lumen tracheal tubes and double-lumen tracheal tubes. Single-lumen tracheal tubes are widely used in clinical practice due to their thin outer diameter, low probability of airway damage, simple operation, and no change in airway diameter. In related technologies, a single-lumen tracheal tube includes a tube body, an airway is formed in the tube body, and the distal end of the tube body has an end opening, which can be used for instrument insertion and / or gas injection; the proximal end of the tube body has a connecting tube, which is used to connect to the ventilation equipment; the tube body is also provided with an airbag, which can fix the tracheal tube after inflation; the distal side wall of the tube body is also provided with a side opening, which can also allow gas to pass through. Normally, the end opening on the tube body is in an open state, and the side opening is in a closed state.

[0004] When lung isolation is required (for example, if tracheal bleeding occurs during surgery, an air bag is needed to block the bleeding segment to prevent blood from flowing into the healthy lung; or when surgery is required on the affected lung), a single-lumen endotracheal tube is inserted through the main trachea into the bronchus on the side to be blocked, and the side opening on the tube body is aligned with the healthy lung side, and then the end opening at the distal end of the tube body is blocked, and the side opening on the tube body is opened, so that the gas entering through the airway can only enter the healthy lung side through the side opening, but cannot enter the bronchus on the blocked side through the end opening.

[0005] In the related art, an inflatable balloon is provided at the distal end of the airway, and the inflatable balloon is located at the distal end of the side opening. After the inflatable balloon is inflated, the distal end of the airway can be blocked, thereby achieving the closure of the end opening; a movable blocking piece is also provided in the airway, and the side opening can be opened or closed by moving the blocking piece. In the tracheal tube in the related art, the opening and closing of the end opening and the side opening are independently controlled, that is, when achieving unilateral ventilation, at least two actions are required: controlling the closing of the end opening and controlling the opening of the side opening. However, in clinical surgery, when encountering intratracheal bleeding, the doctor only has a few minutes to deal with it. The independent control of the end opening and the side opening makes the operation steps of the single-lumen tracheal tube cumbersome, and it is urgent to simplify the operation. Summary of the invention

[0006] The invention discloses an opening switching mechanism and an endotracheal tube, so as to solve the technical problem that a single-lumen endotracheal tube in the related art has complicated operation steps when realizing unilateral ventilation.

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A first aspect of the present invention provides an opening switching structure.

[0009] The opening switching mechanism of the present invention is used on a tube body of an endotracheal tube, wherein the side wall of the tube body is provided with a first opening, and the distal end of the tube body is provided with a second opening, and the opening switching mechanism comprises an inner tube, which is slidably arranged in 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, wherein the deformation component has at least a first state in which the second opening is opened and a second state in which the second opening is closed, and 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 and the first opening are at least partially overlapped, and the deformation component is in the second state.

[0010] According to an optional embodiment, the deformation component includes a first preform, and when the first preform is located inside the tube body, 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 forms a first sealing portion, and the deformation component is in a second state.

[0011] According to an optional embodiment, 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 portion in the axial direction of the tube body, and L2 is the width of the first sealing portion in the radial direction of the tube body.

[0012] According to an optional embodiment, the deformation component also includes a second preformed part, and the second preformed part is located inside the first preformed part. When the first preformed part is located inside the tube body, the second preformed part is a tubular structure; when the first preformed part is located outside the tube body, the proximal end of the second preformed part is formed as a second sealing portion, and the side wall of the second preformed part is at least partially in contact with the side wall of the first preformed part.

[0013] According to an optional embodiment, the deformation component and the inner tube are split structures, and the deformation component includes a base ring, on which at least a first diaphragm and a second diaphragm are provided, and 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 put the deformation component 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 component in a second state.

[0014] According to an optional embodiment, 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.

[0015] According to an optional embodiment, the deformation component includes a plurality of racks located at the distal end of the inner tube, and the width of the racks 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 component also includes a guide ring fixed in the tube body, and a guide surface is formed at the proximal end of the guide ring. The guide surface is inclined, and when the rack is separated from the guide ring, the distal ends of the plurality of racks are separated from each other, and the deformation component is in a first state; when the rack is located in the guide ring, the outer wall of the rack contacts the guide surface and forms a closed conical structure with the plurality of racks, and the deformation component is in a second state.

[0016] According to an optional embodiment, a mounting portion is provided on the inner tube, and the mounting portion is used to install the balloon catheter on the tube body, and the mounting portion is a groove provided on the outer wall of the inner tube, or the mounting portion is a notch penetrating the wall surface of the inner tube.

[0017] According to an optional embodiment, the opening switching mechanism also includes a driving component, which is used to drive the inner tube to slide, and a slide groove is provided on the tube body. The driving component includes a shift block and a connecting block provided on the inner tube, the shift block is connected to the connecting block, and the shift block and the connecting block can be slidably arranged in the slide groove.

[0018] A second aspect of the present invention provides an endotracheal tube.

[0019] The endotracheal tube of the present invention comprises a tube body, a side wall of the tube body having a first opening, a distal end of the tube body having a second opening, and the endotracheal tube further comprises an opening switching mechanism, the opening switching mechanism being the opening switching mechanism described in any one of the technical solutions of the present invention, and the opening switching mechanism being used to control the opening and closing of the first opening and the second opening.

[0020] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0021] The opening switching mechanism of the present invention can enable the tracheal tube to achieve different air intake modes based on the sliding of the inner tube, so as to facilitate the implementation of air supply, hemostasis or surgery on the affected lung side. Specifically, when the communication port and the first opening are completely misaligned, and the deformation component is in the first state, the tracheal tube is in a state where the first opening is closed and the second opening is opened, and air can be taken in from the second opening or an instrument can be inserted; when the communication port and the first opening at least partially overlap, and the deformation component is in the second state, the tracheal tube is in a state where the first opening is opened and the second opening is closed, and air can be taken in from the first opening and lung isolation can be performed.

[0022] Furthermore, in the opening switching mechanism of the present invention, the communication port is arranged on the side wall of the inner tube, and the deformation component is arranged at the distal end of the inner tube. The sliding of the inner tube can drive the communication port and the deformation component to slide simultaneously, so that the communication port and the deformation component simultaneously control the opening and closing of the first opening and the second opening. That is, the opening switching mechanism of the present invention can simultaneously control the switching of the first opening state and the second opening state through one action, thereby improving the switching efficiency of the first opening state and the second opening state and simplifying the operation steps of the tracheal tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of a first opening of an endotracheal tube in a closed state and a second opening in an open state according to a first embodiment of the present application;

[0025] Figure 2 is a schematic diagram of a first opening of an endotracheal tube in an open state and a second opening in a closed state in a first embodiment of the present application;

[0026] Figure 3 yes Figure 1 Exploded diagram of

[0027] Figure 4 yes Figure 2 A partial schematic diagram of the middle inner tube;

[0028] Figure 5 is a partial schematic diagram of an inner tube in another embodiment of the present application;

[0029] Figure 6 is a partial schematic diagram of an inner tube in another embodiment of the present application;

[0030] Figure 7 yes Figure 6 A partial schematic diagram of

[0031] Figure 8 is a schematic diagram of a tracheal tube in a second embodiment of the present application, in which the first opening is in a closed state and the second opening is in an open state;

[0032] Fig. 9 is a schematic diagram of a tracheal tube in a second embodiment of the present application, in which the first opening is in an open state and the second opening is in a closed state;

[0033] Fig.10 yes Figure 8 A partial schematic diagram of the middle inner tube;

[0034] Fig.11 yes Fig. 9 A partial schematic diagram of the middle inner tube;

[0035] Fig.12 is a schematic diagram of the first diaphragm and the second diaphragm being coated on the base ring;

[0036] Fig.13 yes Fig.12 A partial schematic diagram of

[0037] Fig.14 is a schematic diagram of a tracheal tube in a third embodiment of the present application, in which the first opening is in a closed state and the second opening is in an open state;

[0038] Fig.15 is a schematic diagram of a tracheal tube in a third embodiment of the present application, in which the first opening is in an open state and the second opening is in a closed state;

[0039] Fig.16 yes Fig.14 A partial schematic diagram of the middle inner tube;

[0040] Fig.17 yes Fig.15 Partial schematic diagram of the inner tube.

[0041] In the figure: 100, inner tube; 110, connecting port; 120, first preform; 121, first sealing portion; 130, second preform; 131, second sealing portion; 140, base ring; 150, first diaphragm; 160, second diaphragm; 170, rack; 180, guide ring; 181, guide surface; 191, groove; 192, notch; 210, shift block; 300, tube body; 310, first opening; 320, second opening; 330, slide groove; 340, first balloon; 350, second balloon; 360, first balloon catheter; 370, second balloon catheter. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0045] In the tracheal tube in the related art, the opening and closing of the end opening and the side opening are independently controlled by an inflatable balloon and a blocking piece. When achieving unilateral ventilation, at least two actions need to be controlled: closing the end opening and opening the side opening, resulting in cumbersome operation steps of the single-lumen tracheal tube. To this end, the present application provides an opening switching mechanism that can simultaneously control the switching of two opening states. When switching the air intake mode of the tracheal tube, the opening switching can be completed in one step, simplifying the operation steps of the tracheal tube.

[0046] The following is combined with Figures 1 to 17, the opening switching mechanism and tracheal tube provided by the present application are described in detail through specific embodiments and their application scenarios.

[0047] The first aspect of this embodiment describes the opening switching mechanism in detail.

[0048] The opening switching mechanism of this embodiment is used on the tube body 300 of the endotracheal tube. The side wall of the tube body 300 has a first opening 310, and the distal end of the tube body 300 has a second opening 320. Figure 1 and Figure 2 As shown. 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 exhaust air to the first balloon 340, and the second balloon catheter 370 is used to supply air and / or exhaust air to the second balloon 350. Figure 1 and Figure 2 As shown. Inflating the first balloon 340 and the second balloon 350 can expand the first balloon 340 and the second balloon 350 to fix the tracheal tube in the trachea. Exemplarily, the first balloon 340 and the second balloon 350 can be inflated or deflated at the same time, or the first balloon 340 and the second balloon 350 can be inflated or deflated independently.

[0049] Exemplarily, the second balloon 350 is located at the distal end of the first balloon 340, such as Figure 1 and Figure 2 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. Figure 1 and Figure 2 The tracheal tube can achieve unilateral lung air intake by opening the first opening 310 and closing the second opening 320; and can achieve bilateral lung air intake by closing the first opening 310 and opening the second opening 320.

[0050] The opening switching mechanism of this embodiment includes an inner tube 100, which can be slidably disposed in a tube body 300. Figure 1~Figure 4 As shown. For example, the outer diameter of the inner tube 100 is equal to the inner diameter of the tube body 300, so that when the inner tube 100 is placed in the tube body 300, the inner tube 100 and the tube body 300 fit each other. A communication port 110 is provided on the side wall of the inner tube 100, and the communication port 110 penetrates the side wall of the inner tube 100, so that the communication port 110 can be communicated with the inner cavity of the inner tube 100, as shown in FIG. Figure 3 A deformation component is disposed at the distal end of the inner tube 100 , and the deformation component has at least a first state in which the second opening 320 is opened and a second state in which the second opening 320 is closed. Figure 3 and Figure 4A schematic diagram showing a deformation component in a first state and a second state.

[0051] For example, the deformation assembly and the inner tube 100 are an integral structure; or the deformation assembly is fixedly connected to the distal end of the inner tube 100; or the deformation assembly is detachably connected to the distal end of the inner tube 100; or the deformation assembly is in abutment contact with the distal end of the inner tube 100. Thus, when the inner tube 100 slides, the communication port 110 and the deformation assembly can move simultaneously with the sliding of the inner tube 100.

[0052] The deformation component mentioned in this embodiment refers to a component that has different shapes under the action of external force or under preset trigger conditions. The external force mentioned in this embodiment is, for example, extrusion force, elastic force, restraint force, etc.; the preset trigger condition mentioned in this embodiment is, for example, preset temperature, preset position, etc. Exemplarily, the deformation component can have a connected state. At this time, when the deformation component is located at the second opening 320, it will not block the connectivity of the second opening 320, that is, the second opening 320 can be in an open state, such as Figure 1 and Figure 3 The deformation component also has a sealed state. When the deformation component is located at the second opening 320, the second opening 320 is blocked so that the gas and / or liquid cannot pass through the second opening 320, that is, the second opening 320 is in a closed state, such as Figure 2 and Figure 4 shown.

[0053] In some embodiments, the inner tube 100 is in the first position or the 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 tracheal tube can achieve different air intake modes to facilitate operations such as air supply, hemostasis, or surgery on the affected lung side.

[0054] Exemplarily, when the inner tube 100 is in the first position, the communication port 110 is completely misaligned with the first opening 310, and the deformation component is in the first state. Specifically, the communication port 110 is completely misaligned with the first opening 310, and the first opening 310 can be blocked by the side wall of the inner tube 100, so that the first opening 310 is in a closed state; at this time, the deformation component is in the first state, so that the second opening 320 is in an open state, and air can be introduced or instruments can be inserted from the second opening 320, such as Figure 1 and Figure 3 shown.

[0055] Exemplarily, 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 assembly 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 be partially overlapped or completely overlapped, preferably completely overlapped. Specifically, the connecting port 110 at least partially overlaps with the first opening 310, and at this time, the connecting port 110 can be connected to the first opening 310, so that the first opening 310 is in an open state; at this time, the deformation assembly is in the second state, so that the second opening 320 is in a closed state, and air can be taken in from the first opening 310 and lung isolation can be performed, as shown in FIG. Figure 2 and Figure 4 shown.

[0056] In the opening switching mechanism of this embodiment, the communication port 110 is arranged on the side wall of the inner tube 100, and the deformation component is arranged at the distal end of the inner tube 100. The sliding of the inner tube 100 can drive the communication port 110 and the deformation component to slide simultaneously, so that the communication port 110 and the deformation component simultaneously control the opening and closing of the first opening 310 and the second opening 320. That is, the opening switching mechanism of this embodiment can simultaneously control the switching of the first opening 310 state and the second opening 320 state through one action, thereby improving the switching efficiency of the first opening 310 state and the second opening 320 state and simplifying the operation steps of the tracheal tube.

[0057] The present application provides a variety of specific implementations of the deformation component, but is not limited thereto. The deformation component may also be other structures.

[0058] In some embodiments, the deformation assembly includes a first preform 120. When the first preform 120 is located in the tube body 300, the first preform 120 is a tubular structure and the deformation assembly is in a first state, such as Figure 1 and Figure 3 When the first preform 120 is located outside the tube body 300, the first preform 120 is formed with a first sealing portion 121, and the deformation component is in a second state, such as Figure 2 and Figure 4 As shown. Exemplarily, the first preform 120 may be a structure made of a shape memory alloy material, such as a nickel-titanium alloy, a copper-zinc-aluminum alloy, a copper-aluminum-nickel alloy, etc. Shape memory alloy materials, especially nickel-titanium alloys, have good biocompatibility and a recovery temperature that is suitable for human body temperature. The shape memory alloy materials, especially nickel-titanium alloys, have the advantages of high safety and reliability when used to prepare the first preform 120.

[0059] Specifically, the first preform 120 is preformed into a "duckbill shape". When the first preform 120 is located in the tube body 300, the first preform 120 is constrained by the tube body 300 and is formed into a tubular structure. At this time, the deformation component is in the first state, such as Figure 1 and Figure 3 As shown. When the inner tube 100 slides toward the distal end and the first preform 120 is located outside the tube body 300, the first preform 120 is no longer constrained by the tube body 300, and the first preform 120 can be restored to the prefabricated "duckbill shape". Specifically, the first preform 120 is restored to the prefabricated "duckbill shape", the first preform 120 is formed with a first sealing portion 121, and the deformation component is in the second state, as shown. Figure 2 and Figure 4 shown.

[0060] It can be known that by sliding the inner tube 100 toward the proximal end, the first preform 120 can be re-positioned in the tube body 300, and at this time, the deformation component can be switched from the second state to the first state again.

[0061] The first preform 120 of this embodiment can be placed in different forms by placing the first preform 120 inside or outside the tube body 300, so that the second opening 320 can be opened or closed, thereby switching the state of the second opening 320.

[0062] In some embodiments, the entire first preform 120 is formed into the first sealing portion 121 , thereby ensuring the sealing performance of the first preform 120 .

[0063] 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.

[0064] In the solution of this embodiment, when the distal end of the first preform 120 is formed into the first sealing portion 121, the sealing performance of the first sealing portion 121 can be enhanced by limiting the width of the first sealing portion 121 in the axial direction of the tube body 300, thereby preventing the first sealing portion 121 from leaking under the impact of airflow.

[0065] In some embodiments, the deformation assembly further includes a second preform 130. The second preform 130 is located inside the first preform 120. When the first preform 120 is located inside the tube body 300, the second preform 130 is a tubular structure; when the first preform 120 is located outside the tube body 300, the proximal end of the second preform 130 is formed into a second sealing portion 131, and the side wall of the second preform 130 is at least partially in contact with the side wall of the first preform 120, such as Figure 6 and Figure 7 The material of the second preform 130 can be the same as that of the first preform 120, and will not be described in detail herein.

[0066] like Figure 7 As shown, the distal end of the first preform 120 is formed as a first sealing portion 121, and the proximal end of the second preform 130 is formed as a second sealing portion 131, so that the opening of the first preform 120 and the opening of the second preform 130 can be arranged relative to each other, that is, the opening of the first preform 120 is toward the proximal end, and the opening of the second preform 130 is toward the distal end, and the side wall of the second preform 130 is at least partially in contact with the side wall of the first preform 120, at this time, the impact of the airflow on the first sealing portion 121 can be alleviated, ensuring that the first sealing portion 121 has good sealing performance.

[0067] In some embodiments, the deformation component and the inner tube 100 are split structures. The deformation component and the inner tube 100 are split structures, that is, under the action of external force, the deformation component and the inner tube 100 can be separated from each other.

[0068] In some embodiments, the deformation component includes a base ring 140, such as Fig.10 As shown. The base ring 140 is a hollow ring structure. The base ring 140 can be used as a mounting base. The base ring 140 is mounted on the inner wall of the tube body 300 and fits with the inner wall of the tube body 300. Exemplarily, the base ring 140 is provided with a first diaphragm 150 and a second diaphragm 160, as shown. Figure 10~Figure 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 , and can also be covered on the end of the base ring 140 .

[0069] Specifically, when the first diaphragm 150 and the second diaphragm 160 are sleeved on 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. Figure 8 and Fig.10 When the inner tube 100 moves toward the proximal end and the first diaphragm 150 and the second diaphragm 160 are separated 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 a closed state. Fig. 9 and Fig.11 .

[0070] In some embodiments, when the first diaphragm 150 and the second diaphragm 160 are sleeved on 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 is 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 are directly spread apart and sleeved on the distal end of the inner tube 100.

[0071] The deformation component of this embodiment can be in different shapes by sleeve-fitting the first diaphragm 150 and the second diaphragm 160 on the distal end of the inner tube 100 or covering the end of the base ring 140, so as to realize the opening or closing of the second opening 320 and the switching of the state of the second opening 320.

[0072] 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 of ​​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: Fig.12 and Fig.13 As shown, 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 larger than half of the opening area of ​​the base ring 140, and the area of ​​the second diaphragm 160 at the opening of the base ring 140 is larger than half of the opening area of ​​the base ring 140. In this way, the first diaphragm 150 and the second diaphragm 160 at the opening of the base ring 140 at least partially overlap.

[0073] In the solution of 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 through the upper surface or the 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 closely, thereby enhancing the sealing of the opening of the base ring 140.

[0074] In some embodiments, the deformation assembly includes a plurality of racks 170 located at the distal end of the inner tube 100, such as Figure 14~Figure 17 As shown. The plurality of racks 170 are evenly 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 end of the racks 170 is formed into a sharp structure, such as Fig.16 The distal end of the rack 170 is formed into a sharp structure, so that when the multiple racks 170 are gathered together, they can be enclosed to form a conical structure with a closed distal end, such as Fig.17 As shown. Exemplarily, the sides of two adjacent racks 170 that contact each other are inclined structures, so that when the plurality of racks 170 are folded together, the sealing performance at the contact surface of the two adjacent racks 170 can be enhanced.

[0075] In some embodiments, the deformation assembly further includes a guide ring 180 fixed in the tube body 300, and a guide surface 181 is formed at the proximal end of the guide ring 180, and the guide surface 181 is inclined. Fig.16As shown, the guide surface 181 is located at 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 tilts toward the center of the guide ring 180. In the solution of this embodiment, the inner tube 100 slides to drive the rack 170 to slide along the guide surface 181, so that the multiple racks 170 can form different shapes.

[0076] Specifically, when the rack 170 is separated from the guide ring 180, the distal ends of the plurality of racks 170 are separated from each other. At this time, the deformation assembly is in the first state, and the second opening 320 is in the open state. Fig.14 and Fig.16 When the inner tube 100 slides toward the distal end and the rack 170 is located in the guide ring 180, the outer wall of the rack 170 contacts the guide surface 181 and the plurality of racks 170 form a closed conical structure (specifically, the side and distal end of the conical structure are closed). At this time, the deformation component is in the second state, and the second opening 320 is in a closed state. Fig.15 and Fig.17 shown.

[0077] It can be known that by sliding the inner tube 100 toward the proximal end, the distal ends of the plurality of racks 170 can be separated from each other again, and at this time, the deformation assembly can be switched from the second state to the first state again.

[0078] It can be seen that when the multiple racks 170 are folded into a conical structure, even if impacted by airflow, the guide ring 180 restricts the racks 170 so that the far end of the conical structure is less likely to have a risk of air leakage.

[0079] The deformation assembly of this embodiment can be placed in different shapes by separating or retracting the plurality of racks 170 , thereby opening or closing the second opening 320 , and further switching the state of the second opening 320 .

[0080] In some embodiments, the inner tube 100 is provided with a mounting portion, and the mounting portion is used to mount the balloon catheter on the tube body 300. Exemplarily, 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 exhaust air to the first balloon 340, and the second balloon catheter 370 is used to supply air and / or exhaust air to the second balloon 350. The mounting portion is used to mount the first balloon catheter 360 and the second balloon catheter 370, which can avoid interference between the first balloon catheter 360 and the second balloon catheter 370 and the inner tube 100, thereby affecting the sliding of the inner tube 100.

[0081] Exemplarily, the mounting portion is a groove 191 provided on the outer wall of the inner tube 100, such as Figure 4The groove 191 is arranged 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 .

[0082] Exemplarily, the mounting portion is a notch 192 provided on the wall of the inner tube 100, such as Figure 5 The notch 192 is arranged along the axial direction of the inner tube 100. The notch 192 penetrates the wall surface of the inner tube 100. The first balloon catheter 360 and the second balloon catheter 370 are placed in the notch 192.

[0083] In some embodiments, the opening switching mechanism further includes a driving assembly, which is used to drive the inner tube 100 to slide. Exemplarily, a slide groove 330 is provided on the tube body 300, and the driving assembly includes a shifting block 210 and a connecting block provided on the inner tube 100, the shifting block 210 is connected to the connecting block, and the shifting block 210 and the connecting block can be slidably provided at the slide groove 330, such as Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15 As shown. By moving the shifting block 210, the inner tube 100 can be driven to slide, thereby realizing the switching of the first opening 310 and the second opening 320. In the opening switching mechanism of the present invention, the shifting block 210 is located outside the tube body 300, and the shifting block 210 can be controlled by applying force outside the tube body 300. This method of applying force outside the tube body 300 has the advantages of convenient operation and high reliability.

[0084] Exemplarily, the distance between the connecting block and the proximal end of the inner tube 100 is greater than the length of the slide groove 330 in the axial direction of the tube body 300 , so that when the inner tube 100 slides, the opening at the slide groove 330 can be blocked by the wall of the inner tube 100 .

[0085] Without limitation thereto, the opening of the slide groove 330 may also be blocked by a sealing ring or a sealing sheet connected to the shifting block 210. Specifically, the sealing ring or the sealing sheet is located outside the tube body 300, and the length of the sealing ring or the sealing sheet is greater than the length of the slide groove 330 in the axial direction of the tube body 300, so that when the inner tube 100 slides, the opening of the slide groove 330 may be blocked by the sealing ring or the sealing sheet.

[0086] The second aspect of this embodiment provides a detailed description of the endotracheal tube.

[0087] The tracheal tube of this embodiment includes a tube body 300, such as Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15As shown. The tube body 300 is formed into an airway space for gas to pass through. 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 and / or exhaust gas to the first balloon 340, and the second balloon catheter 370 is used to supply and / or exhaust gas to the second balloon 350. Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15 As shown. Inflate the first balloon 340 and the second balloon 350 to expand the first balloon 340 and the second balloon 350 to fix the endotracheal tube in the trachea. Exemplarily, the second balloon 350 is located at the distal end of the first balloon 340, such as Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15 shown.

[0088] In some embodiments, the side wall of the tube body 300 has a first opening 310, and the distal end of the tube body 300 has a second opening 320. Exemplarily, 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. Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15 shown.

[0089] 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 the opening switching mechanism is used to control the opening and closing of the first opening 310 and the second opening 320. Exemplarily, through the control of the opening switching mechanism, one of the first opening 310 and the second opening 320 can be opened and the other can be closed, such as Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.14 and Fig.15 shown.

[0090] The tracheal tube of this embodiment has the opening switching mechanism of any one of the technical solutions of this embodiment, through which the states of the first opening 310 and the second opening 320 can be switched, so that the tracheal tube can achieve different air intake modes, so as to facilitate operations such as air supply, hemostasis, or surgery on the affected lung side; and the tracheal tube of this embodiment can also improve the switching efficiency between the states of the first opening 310 and the second opening 320, thereby simplifying the operation steps of the tracheal tube.

[0091] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0092] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0093] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An opening switching mechanism, used on a tube body (300) of an endotracheal tube, wherein the side wall of the tube body (300) has a first opening (310), and the distal end of the tube body (300) has a second opening (320), characterized in that: The opening switching mechanism comprises an inner tube (100), the outer diameter of the inner tube (100) being equal to the inner diameter of the tube body (300), and when the inner tube (100) is placed in the tube body (300), the inner tube (100) and the tube body (300) are fitted to each other, and air is ventilated through the inner tube (100), and the inner tube (100) can be slidably arranged in the tube body (300); A communication port (110) is provided on the side wall of the inner tube (100), a deformation component is provided at the distal end of the inner tube (100), the deformation component having at least a first state in which the second opening (320) is opened and a second state in which the second opening (320) is closed, and, Based on the sliding of the inner tube (100), the communication port (110) and the first opening (310) are completely misaligned, and the deformation component is in a first state, or the communication port (110) and the first opening (310) at least partially overlap, and the deformation component is in a second state; The deformation component comprises a first preform (120), and when the first preform (120) is located inside the tube body (300), the first preform (120) is a tubular structure, and the deformation component is in a first state; when the first preform (120) is located outside the tube body (300), the first preform (120) is formed with a first sealing portion (121), and the deformation component is in a second state.

2. The opening switching mechanism according to claim 1, characterized in that: The distal end of the first preform (120) is formed as a first sealing portion (121), and the width of the first sealing portion (121) in the axial direction of the tube (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).

3. The opening switching mechanism according to claim 1, characterized in that: The deformation assembly further comprises a second preform (130), wherein the second preform (130) is located inside the first preform (120). When the first preform (120) is located inside the tube body (300), the second preform (130) is a tubular structure; when the first preform (120) is located outside the tube body (300), the proximal end of the second preform (130) is formed into a second sealing portion (131), and the side wall of the second preform (130) is at least partially in contact with the side wall of the first preform (120).

4. The opening switching mechanism according to any one of claims 1 to 3, characterized in that: The inner tube (100) is provided with a mounting portion, the mounting portion being used to mount the balloon catheter on the tube body (300), and, The mounting portion is a groove (191) provided on the outer wall of the inner tube (100), or the mounting portion is a notch (192) penetrating the wall surface of the inner tube (100).

5. The opening switching mechanism according to any one of claims 1 to 3, characterized in that: It also includes a driving assembly, the driving assembly is used to drive the inner tube (100) to slide, and The tube body (300) is provided with a slide groove (330), the driving assembly comprises a shifting block (210) and a connecting block provided on the inner tube (100), the shifting block (210) is connected to the connecting block, and the shifting block (210) and the connecting block can be slidably arranged at the slide groove (330).

6. An opening switching mechanism, used on a tube body (300) of an endotracheal tube, wherein the side wall of the tube body (300) has a first opening (310), and the distal end of the tube body (300) has a second opening (320), characterized in that: The opening switching mechanism comprises an inner tube (100), the outer diameter of the inner tube (100) being equal to the inner diameter of the tube body (300), and when the inner tube (100) is placed in the tube body (300), the inner tube (100) and the tube body (300) are fitted to each other, and air is ventilated through the inner tube (100), and the inner tube (100) can be slidably arranged in the tube body (300); A communication port (110) is provided on the side wall of the inner tube (100), a deformation component is provided at the distal end of the inner tube (100), the deformation component having at least a first state in which the second opening (320) is opened and a second state in which the second opening (320) is closed, and, Based on the sliding of the inner tube (100), the communication port (110) and the first opening (310) are completely misaligned, and the deformation component is in a first state, or the communication port (110) and the first opening (310) at least partially overlap, and the deformation component is in a second state; The deformation component and the inner tube (100) are of a split structure, the deformation component comprises a base ring (140), the base ring (140) is mounted on the inner wall of the tube body (300) and fits with the inner wall of the tube body (300), the base ring (140) is provided with at least a first diaphragm (150) and a second diaphragm (160), and when the first diaphragm (150) and the second diaphragm (160) are sleeved on the distal end of the inner tube (100), the first diaphragm (150) and the second diaphragm (160) form a tubular structure and put the deformation component in a first state; when the first diaphragm (150) and the second diaphragm (160) are separated from the inner tube (100), the first diaphragm (150) and the second diaphragm (160) close the opening of the base ring (140) and put the deformation component in a second state.

7. The opening switching mechanism according to claim 6, characterized in that: 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 / 2S0, Wherein, S0 is the area at the opening of the base ring (140), S1 is the area of ​​the first diaphragm (150) located at the opening of the base ring (140), and S2 is the area of ​​the second diaphragm (160) located at the opening of the base ring (140).

8. The opening switching mechanism according to claim 6 or 7, characterized in that: The inner tube (100) is provided with a mounting portion, the mounting portion being used to mount the balloon catheter on the tube body (300), and, The mounting portion is a groove (191) provided on the outer wall of the inner tube (100), or the mounting portion is a notch (192) penetrating the wall surface of the inner tube (100).

9. The opening switching mechanism according to claim 6 or 7, characterized in that: It also includes a driving assembly, the driving assembly is used to drive the inner tube (100) to slide, and The tube body (300) is provided with a slide groove (330), the driving assembly comprises a shifting block (210) and a connecting block provided on the inner tube (100), the shifting block (210) is connected to the connecting block, and the shifting block (210) and the connecting block can be slidably arranged at the slide groove (330).

10. An opening switching mechanism, used on a tube body (300) of an endotracheal tube, wherein the side wall of the tube body (300) has a first opening (310), and the distal end of the tube body (300) has a second opening (320), characterized in that: The opening switching mechanism comprises an inner tube (100), the outer diameter of the inner tube (100) being equal to the inner diameter of the tube body (300), and when the inner tube (100) is placed in the tube body (300), the inner tube (100) and the tube body (300) are fitted to each other, and air is ventilated through the inner tube (100), and the inner tube (100) can be slidably arranged in the tube body (300); A communication port (110) is provided on the side wall of the inner tube (100), a deformation component is provided at the distal end of the inner tube (100), the deformation component having at least a first state in which the second opening (320) is opened and a second state in which the second opening (320) is closed, and, Based on the sliding of the inner tube (100), the communication port (110) and the first opening (310) are completely misaligned, and the deformation component is in a first state, or the communication port (110) and the first opening (310) at least partially overlap, and the deformation component is in a second state; The deformation component comprises a plurality of racks (170) located at the distal end of the inner tube (100), the width of the racks (170) gradually decreases from the proximal end to the distal end, and the distal end of the racks (170) is formed into a sharp structure, and the deformation component also comprises a guide ring (180) fixed in the tube body (300), the proximal end of the guide ring (180) is formed with a guide surface (181), the guide surface (181) is inclined, and when the racks (170) are separated from the guide ring (180), the distal ends of the plurality of racks (170) are separated from each other, and the deformation component is in a first state; when the racks (170) are located in the guide ring (180), the outer wall of the racks (170) contacts the guide surface (181) and the plurality of racks (170) form a closed conical structure, and the deformation component is in a second state.

11. The opening switching mechanism according to claim 10, characterized in that: The inner tube (100) is provided with a mounting portion, the mounting portion being used to mount the balloon catheter on the tube body (300), and, The mounting portion is a groove (191) provided on the outer wall of the inner tube (100), or the mounting portion is a notch (192) penetrating the wall surface of the inner tube (100).

12. The opening switching mechanism according to claim 10, characterized in that: It also includes a driving assembly, the driving assembly is used to drive the inner tube (100) to slide, and The tube body (300) is provided with a slide groove (330), the driving assembly comprises a shifting block (210) and a connecting block provided on the inner tube (100), the shifting block (210) is connected to the connecting block, and the shifting block (210) and the connecting block can be slidably arranged at the slide groove (330).

13. A tracheal tube, characterized in that: The invention comprises a tube body (300), wherein a side wall of the tube body (300) has a first opening (310), and a distal end of the tube body (300) has a second opening (320). The endotracheal tube further comprises an opening switching mechanism, wherein the opening switching mechanism is the opening switching mechanism according to any one of claims 1 to 12, and the opening switching mechanism is used to control the opening and closing of the first opening (310) and the second opening (320).

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