A channel switching component and a catheter

Abstract

The present invention provides a channel switching component and a catheter, which relate to the field of medical devices. The present invention comprises a blocking member configured to close the first opening or the second opening so that one of the first opening and the second opening is in an open state and the other is in a closed state; and a driving member used to drive the blocking member to control the closed state of the first opening or the second opening. Compared with the prior art, the present invention has the advantages of greatly simplifying the operation process, shortening the processing time, significantly improving the emergency response efficiency, and being able to better protect the patient's respiratory function and life safety at critical moments.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a channel switching component and a catheter. Background Art

[0002] The endotracheal tube is a medical device used to keep the airway open and maintain normal ventilation. It is widely used in anesthesia, emergency treatment and intensive care. By inserting it into the trachea, the endotracheal tube can deliver gas to the lungs and provide the patient with necessary oxygen support. Unlike the endotracheal tube, the bronchial tube is designed for single-lung ventilation or double-lung separation. According to the structure, it can be divided into single-lumen bronchial tube and double-lumen bronchial tube.

[0003] Single-lumen endobronchial tubes are mainly used for ventilation management of one lung, such as treatment of unilateral lung disease or single-lung isolation. Double-lumen endobronchial tubes, due to their dual independent lumen design, are suitable for special situations that require single-lung ventilation or separation of the two lungs, such as thoracic surgery or affected lung isolation.

[0004] In clinical practice, when acute bleeding occurs in the affected lung, the affected lung must be quickly isolated and normal ventilation of the healthy lung must be ensured to prevent blood from entering the healthy lung. The double-lumen endobronchial tube blocks the affected bronchus through one lumen and supplies air to the healthy lung through the other lumen. However, for patients who have used a single-lumen endotracheal tube, if the two lungs need to be separated in an emergency, the single-lumen endotracheal tube usually needs to be removed and a double-lumen endotracheal tube or bronchial blocking device reinserted to complete the operation.

[0005] However, the replacement process of such tubes is complicated and time-consuming, especially in emergency situations, where replacing the tube may result in interruption of gas supply or insufficient ventilation, thus endangering patient safety. Summary of the invention

[0006] In order to solve the above problems, the present application provides a channel switching component and a catheter.

[0007] In a first aspect, the present application provides a channel switching component, which adopts the following technical solution:

[0008] A channel switching assembly is applied to a catheter, wherein the catheter comprises a first opening and a second opening, and the channel switching assembly comprises:

[0009] a blocking member configured to close the first opening or the second opening so that one of the first opening and the second opening is in an open state and the other is in a closed state;

[0010] A driving member is used to drive the blocking member to control the closing state of the first opening or the second opening.

[0011] Preferably, the blocking member comprises:

[0012] A balloon is arranged on the catheter and has an expanded state and a collapsed state. When the balloon is inflated, it can enter an expanded state from the collapsed state. When the balloon is in the expanded state, the first opening can be closed;

[0013] a channel, at least partially disposed in the balloon, the channel connecting the conduit with the second opening;

[0014] Wherein, when the sac is in an expanded state, the channel is opened under the action of the sac; when the sac is in a collapsed state, the channel is at least partially collapsed and closed along with the sac.

[0015] Preferably, the catheter has a lumen, the first opening and the second opening are both connected to the lumen, and the lumen is distributed along the length direction of the catheter;

[0016] When the balloon is in an expanded state, the connection point between the channel and the catheter is located in the central axis area of ​​the cavity.

[0017] Preferably, the channel is formed in the capsule, and the capsule is connected to the catheter at least near the second opening;

[0018] Alternatively, at least the portion where the channel communicates with the catheter is located in the balloon.

[0019] Preferably, the sac comprises a first inflatable part and a second inflatable part which are interconnected, and the channel is arranged in the second inflatable part;

[0020] When the sac is in an expanded state, the first inflatable part is used to close the first opening, and the second inflatable part is used to open the channel;

[0021] When the balloon is in a collapsed state, the channel collapses and closes along with the second inflatable portion.

[0022] Preferably, when the balloon is in a collapsed state, at least part of the second inflatable portion forms a folding structure, so that at least part of the channel is folded;

[0023] and / or, the second inflatable portion is connected to the conduit;

[0024] And / or, the proximal end side of the first inflatable part is connected to the catheter.

[0025] Preferably, the first inflatable portion is movably coordinated with the catheter.

[0026] Preferably, a sticky layer is provided in the channel;

[0027] And / or, the driving member includes a first pipeline, and the first pipeline is connected to the sac.

[0028] In a second aspect, the present application provides a catheter, which adopts the following technical solution:

[0029] A catheter comprises a tube body, wherein the tube body has a lumen, and the distal end of the tube body has a first opening and a second opening both communicating with the lumen, wherein the first opening is located at the distal end side of the second opening;

[0030] The tube body is provided with a channel switching component as described in the above technical solution, and the channel switching component is used to control the closing state of the first opening or the second opening so that one of the first opening and the second opening is in an open state and the other is in a closed state.

[0031] Preferably, a first airbag and a second airbag are disposed outside the tube body, the first airbag is located between the first opening and the second opening, the second airbag is located at the proximal side of the second opening, and the first airbag and the second airbag are connected by a second pipeline.

[0032] The present invention has the following advantages and beneficial effects:

[0033] The channel switching assembly of the present invention can enable the catheter to quickly switch between the first opening and the second opening, and flexibly meet different ventilation needs. Under normal use, since the second opening is in a closed state and the first opening is in an open state, airflow can be provided to one side of the lung through the first opening, while isolating the other side of the lung to avoid gas mixing or interference. When acute bleeding occurs in one lung, the opening can be quickly switched by operating the channel switching assembly, the bleeding lung can be effectively isolated, and normal ventilation of the non-bleeding lung can be maintained through the second opening. Compared with the traditional technology that requires replacing the catheter or performing complex operations, the present invention greatly simplifies the operation process, shortens the processing time, and significantly improves the efficiency of emergency response, which can better protect the patient's respiratory function and life safety at critical moments.

[0034] Specifically, the channel switching assembly drives the blocking member to move through the driving member to control the closed and open states of the first opening and the second opening in the catheter. When the patient's condition changes, the medical staff can operate the driving member to make the blocking member open the second opening and close the first opening, thereby changing the ventilation path and allowing the airflow to flow from the second opening to the target lung. The entire switching process is quick and smooth, and there is no need to replace the catheter, which reduces the complexity of the operation and the interference with the patient's breathing, ensuring that the ventilation mode can be adjusted in time to respond to emergencies.

[0035] In summary, the channel switching assembly provided by the present invention not only overcomes the problems of complicated operation and time delay caused by catheter replacement in the background technology, but also can achieve fast and reliable ventilation switching in acute lesion scenarios. Its design logic is reasonable and easy to operate. It can efficiently complete lung isolation and ventilation path adjustment, provide important support for patient rescue, and greatly improve the safety and efficiency of medical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 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.

[0037] Figure 1 is a first structural schematic diagram of the capsule in a collapsed state;

[0038] Figure 2 is a first structural schematic diagram of the capsule in an expanded state;

[0039] Figure 3 is a second structural schematic diagram of the capsule in an expanded state;

[0040] Figure 4 is a cross-sectional view of the bladder in an expanded state;

[0041] Figure 5 is a second structural schematic diagram of the capsule in a collapsed state;

[0042] Figure 6 is a schematic diagram of the third structure when the bladder is in an expanded state;

[0043] Figure 7 is a cross-sectional view of the second inflatable portion in a collapsed state;

[0044] Figure 8 It is a schematic diagram of the structure of an embodiment of the present application;

[0045] Fig. 9 is a first cross-sectional view of the catheter;

[0046] Fig.10 is a second cross-sectional view of the catheter;

[0047] Fig.11 is the third cross-sectional view of the catheter.

[0048] The markings in the figure are:

[0049] 10. catheter; 11. first opening; 12. second opening; 13. cavity; 14. tube body; 15. first airbag; 16. second airbag; 17. second pipeline; 100. blocking member; 110. balloon body; 111. first inflatable part; 112. second inflatable part; 120. passage; 200. driving member; 210. first pipeline. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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".

[0053] In the relevant technology, in order to meet the diverse clinical needs, tracheal tubes and bronchial tubes are designed and used separately, and are further subdivided into single-lumen tracheal tubes, double-lumen tracheal tubes, single-lumen bronchial tubes and double-lumen bronchial tubes. These tubes each have their own specific uses and functions and cannot replace each other. For example, tracheal tubes are mainly used for routine airway management, while bronchial tubes are often used in special situations where unilateral or bilateral lung isolation ventilation is required.

[0054] However, the existing technology has obvious shortcomings in dealing with some special emergency situations. First, when using a tracheal tube, if a patient has sudden acute bleeding in one lung, it is necessary to urgently isolate the bleeding lung and restore the ventilation function of the other lung. The existing practice is to remove the tracheal tube and replace it with a double-lumen bronchial tube to achieve isolation of the affected side and ventilation of the healthy side. However, the process of replacing a double-lumen bronchial tube is complicated and time-consuming, which can easily lead to ventilation interruption and increase patient risks.

[0055] Secondly, although the double-lumen endobronchial catheter can achieve bilateral independent ventilation, its outer diameter is large, which can easily cause airway compression, making it more difficult to place, especially in children or patients with small airways. In addition, the double-lumen endobronchial catheter has a complex structure, including independent lumens, balloons, double cannulas, and occlusion devices, which results in a high cost and is not conducive to its widespread use in general medical environments.

[0056] In addition, in complex lung surgery or treatment, it is usually necessary to insert a single-lumen bronchial tube into the healthy lung to maintain normal lung ventilation and isolate the affected lung for surgery or treatment. However, if acute bleeding suddenly occurs in the normal lung during surgery (such as rupture of large blood vessels or damage to lung tissue), the air supply side needs to be switched quickly. In this case, it is usually necessary to withdraw the single-lumen bronchial tube and replace it with a double-lumen bronchial tube. This operation process is time-consuming, and it is difficult to quickly isolate the bleeding lung and restore normal ventilation on the other side, which poses a great safety hazard. Similarly, in some cases, a single-lumen bronchial tube needs to be inserted into the affected lung to isolate the healthy lung and supply drugs to the affected lung alone, thereby preventing drugs from entering the healthy lung. However, if acute bleeding suddenly occurs in the healthy lung during this operation, it also needs to be replaced with a double-lumen bronchial tube. This switch is not only time-consuming, but also has a high operational risk.

[0057] In summary, when facing emergencies, existing technologies have problems such as insufficient emergency switching capabilities, poor catheter adaptability, and limitations in multi-scenario applications, which lead to complicated operations, time delays, and increased risks to patients.

[0058] In order to solve these problems, the present invention provides a channel switching component, which aims to quickly isolate one lung and ensure normal ventilation of the other lung, so as to efficiently respond to emergencies. The component can achieve different ventilation modes by quickly switching the openings in the catheter, simplifying the operation process and avoiding the delays and complicated operations caused by catheter replacement in traditional technologies.

[0059] During use, the catheter can be inserted into the trachea to achieve ventilation of both lungs. If an emergency situation of acute bleeding in one lung occurs, traditional technology usually requires the removal of the existing tracheal tube and replacement with a double-lumen bronchial tube, which is time-consuming and complicated. However, the present invention, through the design of the channel switching component, only needs to insert the distal end of the catheter into the bronchus of either side of the lung. For example, when the first opening end is inserted into the healthy lung, the bleeding side can be isolated and ventilation can be continued by closing the first opening and opening the second opening; if the first opening end is inserted into the bleeding lung, the bleeding lung can be isolated by switching and ventilation of the healthy lung can be maintained. The entire process does not require the replacement of the catheter, ensuring the efficiency and safety of the operation.

[0060] When drug treatment is needed for the affected lung, the catheter can be inserted into the affected lung and isolate the healthy lung, thereby ensuring that the drug only enters the affected lung and avoids affecting the healthy lung. If acute bleeding occurs in the affected lung at this time, the traditional method usually requires replacing the catheter, while the present invention quickly isolates the affected lung and ensures ventilation of the healthy lung by quickly switching the states of the first opening and the second opening, avoiding the safety hazards caused by changing the tube.

[0061] In addition, during certain complex lung surgeries or treatments, a catheter can be inserted into the healthy lung to ensure normal ventilation of the healthy lung while isolating the affected lung. If acute bleeding suddenly occurs in the healthy lung, traditional methods usually require replacement of the catheter. When using the channel switching assembly of the present invention, the bleeding lung can be isolated and the ventilation function of the non-bleeding lung can be guaranteed by simply switching the first opening on the healthy side and opening the second opening. There is no need to remove the catheter, and emergencies can be quickly responded to.

[0062] The channel switching assembly of the present invention can quickly isolate the bleeding lung and ensure normal ventilation of the healthy lung through simple switching operations in emergency situations such as acute unilateral lung bleeding. Whether in daily surgery, drug supply or emergencies, this design can quickly and effectively achieve unilateral lung isolation and normal ventilation supply without replacing the catheter, greatly improving the efficiency of medical emergency treatment and enhancing the safety of patients.

[0063] The following is combined with Figures 1 to 11 , a channel switching component and a catheter provided by the present application are described in detail through specific embodiments and their application scenarios.

[0064] A first aspect of this embodiment provides a detailed description of a channel switching component.

[0065] The embodiment of the present application provides a channel switching assembly, which is applied to a catheter 10. Exemplarily, the catheter 10 includes a tube body 14, a first opening 11 and a second opening 12, and the first opening 11 and the second opening 12 are both opened on the tube body 14 and communicated with the cavity 13 in the tube body 14. Exemplarily, the tube body 14 is a hollow thin-walled shell, and the cavity 13 is distributed along the length direction of the tube body 14. In some schemes, the first opening 11 is located at the distal end of the tube body 14, and the second opening 12 is located on the proximal side of the first opening 11. By supplying air into the cavity 13, the gas can selectively enter the patient's lungs through the first opening 11 or the second opening 12, thereby realizing the ventilation function of the lungs. During use, the channel switching assembly can effectively control the channel of the airflow, thereby realizing ventilation or isolation of different lung areas to meet different clinical needs.

[0066] It should be noted that the design of the catheter 10 is compatible with the application scenarios of tracheal tubes and bronchial tubes, that is, the catheter 10 can be used in conventional tracheal tube applications as well as in more complex bronchial tube applications. This versatility enables the catheter 10 to meet a variety of clinical needs, whether in ordinary tracheal intubation operations or in bronchial intubation operations that require more precise ventilation management, and can provide stable and efficient performance support. This design enhances the scope of application of the catheter and facilitates the standardization of medical equipment and the flexibility of use.

[0067] In some embodiments, the channel switching assembly is installed in the tube body 14 of the catheter 10. The installation position of the channel switching assembly can be in different forms: for example, part of the channel switching assembly can be installed inside the tube body 14, and the other part is located outside the tube body 14; or, the channel switching assembly is completely located in the tube body 14 and is directly arranged in the cavity 13. According to actual needs, the design of the channel switching assembly can be flexibly adapted to different catheter 10 structures and usage scenarios. The connection method between the channel switching assembly and the tube body 14 can also be different. It can be designed as a detachable connection for easy maintenance and replacement; it can also be designed as a non-detachable connection to ensure its long-term stable performance.

[0068] Specifically, the core function of the channel switching component is to selectively close the first opening 11 or the second opening 12, thereby achieving ventilation or isolation of different lungs. By setting up the channel switching component, the catheter 10 can achieve rapid switching of the channel 120, avoiding the cumbersome steps of replacing the catheter 10 in the traditional method. In acute lesions or emergency situations, medical staff can quickly change the ventilation mode through simple operations, so that the patient's lungs can quickly resume ventilation, or when acute bleeding occurs in one side of the lung, it can be quickly isolated without the need to replace the catheter 10, thereby saving valuable time and reducing operational risks.

[0069] The channel switching assembly includes a blocking member 100 and a driving member 200. The function of the blocking member 100 is to switch the ventilation channel according to the operation of the driving member 200. Specifically, the blocking member 100 can respond to the operation of the driving member 200 and selectively close the first opening 11 or the second opening 12, thereby changing the flow direction of the gas in the cavity 13 to meet different needs in clinical scenarios. Exemplarily, during initial use, the blocking member 100 closes the second opening 12 and opens the first opening 11. Through the driving member 200, the first opening 11 can be closed and the second opening 12 can be opened.

[0070] In one embodiment, the blocking member 100 can be designed as a blocking structure, which is initially fixed at the second opening 12 and completely blocks the second opening 12. When the channel needs to be switched, the driving member 200 can push or pull the blocking structure to move it away from the second opening 12, and at the same time block the first opening 11 to complete the switching of the ventilation direction. This design simplifies the component structure and is suitable for scenarios where ventilation switching needs to be completed quickly.

[0071] In another embodiment, the blocking member 100 may adopt a three-way valve structure, which is located in the cavity 13. The design of the three-way valve can control the connection state between the cavity 13 and the first opening 11 or the second opening 12 by rotation or movement. For example, when the cavity 13 is connected to the first opening 11, the gas enters the patient's lungs through the first opening 11; when the cavity 13 is connected to the second opening 12, the gas flows into the lungs through the second opening 12. Through the operation of the driving member 200, the three-way valve can flexibly switch the ventilation channel to meet the needs of bilateral lung isolation, unilateral lung ventilation or other complex medical needs.

[0072] According to an optional embodiment, the blocking member 100 includes a capsule 110 and a channel 120. The capsule 110 is disposed on the catheter 10, and the capsule 110 has an expanded state and a collapsed state. When the capsule 110 is inflated, it can enter an expanded state from a collapsed state. When the capsule 110 is in the expanded state, the first opening 11 can be closed. Exemplarily, the capsule 110 is a hollow elastic balloon, which can expand after the capsule 110 is inflated, thereby separating the cavity 13 from the first opening 11, so that the gas in the cavity 13 cannot be discharged through the first opening 11. It can be understood that the capsule 110 is fixed to the catheter 10 by gluing or welding.

[0073] At least part of the channel 120 is disposed in the balloon 110, and the channel 120 connects the catheter 10 with the second opening 12. When the balloon 110 is in an expanded state, the channel 120 is opened under the action of the balloon 110; when the balloon 110 is in a collapsed state, at least part of the channel 120 collapses and closes along with the balloon 110. Exemplarily, the channel 120 is formed inside the balloon 110, and when the balloon 110 is inflated, the balloon 110 expands, thereby stretching the channel 120, so that the channel 120 is opened, and the gas in the cavity 13 can enter the second opening 12 through the channel 120, so as to achieve the connection between the second opening 12 and the catheter 10, so that the air in the cavity 13 can be discharged through the second opening 12.

[0074] It is understandable that when the capsule 110 is in a collapsed state, there is no gas support in the capsule 110, and its surface collapses into a sheet-like structure, which is closely attached to the inside of the cavity 13. At this time, the channel 120 is also closed with the collapse of the capsule 110, and the inner wall is tightly attached, so that the gas cannot flow to the second opening 12 through the channel 120, thereby achieving the sealing of the second opening 12.

[0075] Furthermore, when the capsule 110 is in a collapsed state, its sheet structure will not significantly occupy the space inside the cavity 13, and can effectively avoid interference with other airflow paths. At the same time, since the channel 120 collapses with the capsule 110, its inner wall fits tightly, even if a certain airflow pressure is applied from the outside, the negative pressure state inside the capsule 110 can still effectively prevent the channel 120 from opening, thereby ensuring the sealing performance of the second opening 12.

[0076] When the gas needs to pass through the channel 120, the capsule 110 is inflated, so that the capsule 110 enters the expanded state from the collapsed state, and the capsule 110 gradually expands from a sheet structure to a three-dimensional structure. In this process, the capsule 110 supports the channel 120, so that the inner wall of the channel 120 is separated and opened, so that the gas in the cavity 13 can smoothly pass through the channel 120 into the second opening 12. At the same time, the expansion of the capsule 110 also isolates the cavity 13 from the first opening 11, preventing the airflow from passing through the first opening 11, and further ensuring that the airflow is completely directed to the second opening 12.

[0077] According to an optional embodiment, when the capsule 110 is in an expanded state, the connection point between the channel 120 and the catheter 10 is located in the central axis area of ​​the cavity 13. In actual use, if acute bleeding occurs in the lung connected to the first opening 11, some blood may enter the cavity 13 and accumulate therein. Over time, the blood may completely block the first opening 11, thereby preventing air from entering the lung connected to the first opening 11. When the capsule 110 is gradually changed from a collapsed state to an expanded state by the driving member 200, the capsule 110 will simultaneously perform two actions: on the one hand, the expansion of the capsule 110 gradually blocks the first opening 11, thereby effectively preventing the blood in the bleeding lung from further flowing into the cavity 13; on the other hand, the capsule 110 supports and gradually opens the channel 120, so that the gas in the cavity 13 can be discharged to the second opening 12 through the channel 120.

[0078] In this process, since the entrance of the channel 120 communicating with the catheter 10 is located in the central axis area of ​​the cavity 13, and the blood remaining in the cavity 13 is usually distributed in the lower position or peripheral area of ​​the cavity 13, it is difficult for the blood to enter the channel 120. This design can effectively prevent the residual blood in the cavity 13 from entering the second opening 12 through the channel 120, thereby preventing the blood from contaminating and clogging the non-bleeding lung. At the same time, since the first opening 11 is tightly closed after the capsule 110 is fully expanded, it is further ensured that the blood in the bleeding lung will not flow back to the cavity 13 through the first opening 11, minimizing the risk of cross contamination.

[0079] This structure and working principle design not only can quickly isolate the bleeding lung and prevent the spread of blood, but also ensure that the gas flow to the non-bleeding lung is unobstructed and maintains its normal ventilation function. This embodiment significantly improves the safety and reliability of the system in the case of acute bleeding, and provides a more effective ventilation isolation solution for clinical treatment.

[0080] According to an optional embodiment, the channel 120 is formed in the capsule 110, and the capsule 110 is connected to the catheter 10 at least near the second opening 12. The specific meaning of the channel 120 being formed in the capsule 110 is that the side wall of the channel 120 is completely surrounded by the material of the capsule 110, thereby giving the channel 120 the function of automatically closing or opening as the state of the capsule 110 changes.

[0081] Exemplarily, when the capsule 110 is in a collapsed state, the gas inside the capsule 110 is completely discharged, and the capsule 110 collapses into a sheet-like structure due to the loss of support. In this process, the inner walls of the channel 120 fit together as the capsule 110 collapses, thereby closing the channel 120 and preventing the flow of gas. When the capsule 110 is in an expanded state, the capsule 110 is filled with gas and expands, and the capsule 110 expands from a sheet-like state to a bulging state. This expansion effect causes the channel 120 inside the capsule 110 to be opened, forming a complete airflow passage, so that the channel 120 enters an open state, which can effectively realize the transfer of gas between the cavity 13 and the second opening 12.

[0082] This design controls the opening and closing of the channel 120 by directly changing the state of the capsule 110, without the need for an additional mechanical valve structure, and has the advantages of simple structure and rapid response. In addition, since the side wall of the channel 120 and the capsule 110 are integrated, the risk of air leakage that may occur at the connection between the traditional independent channel 120 and the capsule 110 can be avoided, thereby further improving the sealing and reliability of the system. In actual use, this structure can flexibly adapt to different clinical scenarios and effectively improve the efficiency and safety of the device in ventilation switching and patient care.

[0083] According to an optional embodiment, at least the portion where the channel 120 is connected to the catheter 10 is located in the capsule 110. That is, the channel 120 can be completely formed inside the capsule 110, or it can be partially formed in the capsule 110. For example, in the case of partial formation, one end of the channel 120 connected to the catheter 10 is located inside the capsule 110, while the other areas of the channel 120 are located outside the capsule 110, so that the end of the channel 120 connected to the second opening 12 is always kept in an open state. When the capsule 110 enters an expanded state, the capsule 110 is filled with gas, and the expanded capsule 110 will open one end of the channel 120 connected to the catheter 10, so that the channel 120 as a whole forms a complete airflow passage, thereby realizing the opening of the channel 120. When the capsule 110 is in a collapsed state, the capsule 110 collapses due to the discharge of gas, and the end of the channel 120 connected to the catheter 10 is closed, so that the channel 120 is in a closed state.

[0084] With this design, since one end of the channel 120 that is connected to the second opening 12 is always open, when the channel 120 is opened, the airflow connection between the cavity 13 and the second opening 12 can be quickly achieved, thereby improving the efficiency of gas discharge or ventilation switching. This design of the channel 120 partially formed in the capsule 110 not only has high structural adaptability, but also can reduce interference with surrounding structures, improve the operational flexibility and sealing performance of the system, and help meet the needs of different clinical application scenarios.

[0085] According to an optional embodiment, the sac 110 includes a first inflatable portion 111 and a second inflatable portion 112 that are interconnected, and the channel 120 is arranged in the second inflatable portion 112. When the sac 110 is in an expanded state, the first inflatable portion 111 is used to close the first opening 11, and the second inflatable portion 112 is used to open the channel 120. When the sac 110 is in a collapsed state, the channel 120 collapses and closes with the second inflatable portion 112. It can be understood that by dividing the sac 110 into a plurality of inflatable parts, a clear division of functions can be achieved. For example, the first inflatable portion 111 focuses on closing the first opening 11 to ensure the sealing effect, while the second inflatable portion 112 focuses on the opening and stabilization of the channel 120, so that the sealing of the first opening 11 and the opening of the channel 120 of the second opening 12 can be quickly achieved. In addition, the sac 110 may also include a third inflatable portion and a fourth inflatable portion to adapt to specific usage requirements. For example, the third inflatable part can be used to assist in supporting the structure, and the fourth inflatable part can adapt to complex anatomical environments, thereby improving the diversity and adaptability of the device.

[0086] This partition design can not only optimize the function realization, but also has significant advantages in manufacturing, operation and maintenance. Through the partition design, the shape, size and position of the inflatable components can be adjusted according to the actual use requirements, so that the capsule 110 has higher design flexibility. For example, according to different clinical needs, the size of a specific inflatable part can be increased or reduced to improve the sealing effect or enhance the structural stability. At the same time, the partition design can also effectively reduce the manufacturing cost. For example, the second inflatable part 112 is relatively difficult to manufacture because it involves the opening and closing of the channel 120, but by reducing its size or optimizing its structure, the material and equipment costs can be reduced. In addition, the independence of different inflatable components makes it easier to mass produce and replace independently, thereby reducing the maintenance difficulty of the overall equipment.

[0087] The partition design can also improve the operational control accuracy and structural reliability of the equipment. For example, by independently controlling the expansion sequence of the first inflatable part 111 and the second inflatable part 112, a smoother operation can be achieved, avoiding the adverse effects of air pressure fluctuations in the cavity 13 on the patient. At the same time, multiple inflatable components disperse the stress points, reduce the stress concentration of the material, and extend the service life of the balloon 110. Even if a certain inflatable part fails unexpectedly, the other inflatable parts can still partially realize the system functions, thereby increasing the safety and reliability of the equipment operation. The multi-inflatable part design of the balloon 110 can not only adapt to the diverse clinical application needs, but also provide a more efficient and economical solution for airway management in complex medical scenarios.

[0088] According to an optional embodiment, when the bladder 110 is in a collapsed state, the second inflatable portion 112 at least partially forms a folding structure, so that at least part of the channel 120 is folded. The folding structure can be understood as the side wall of the channel 120 forming a stack, and these stacks can be composed of a multi-layer structure. In the collapsed state, the channel 120 is tightly closed by folding the side wall, thereby significantly improving the sealing of the channel 120. Specifically, the folding structure can adopt a bellows-shaped design. When the side wall of the channel 120 is folded to form a bellows-shaped structure, the overlapping area of ​​the side wall is staggered and overlapped, further enhancing the sealing effect of the channel 120.

[0089] For example, when the capsule 110 is in a collapsed state, the gas in the second inflatable portion 112 is emptied, the capsule 110 shrinks into a sheet, and the side wall of the channel 120 is folded accordingly. The bellows-shaped folding structure enables the side wall of the channel 120 to completely overlap and fit in the collapsed state, thereby preventing gas or liquid from leaking from the channel 120, and is particularly suitable for clinical scenarios that require high sealing performance. Compared with the ordinary smooth side wall design, the staggered overlap of this corrugated folding structure not only improves the sealing performance, but also effectively reduces the sealing failure caused by insufficient pressure on the side wall.

[0090] It is understandable that the design of this folding structure also has good structural recovery performance. When the capsule 110 enters the expanded state from the collapsed state, the bellows-shaped side wall can quickly unfold and restore the complete shape of the channel 120, thereby ensuring the flow performance of the channel 120. The bellows design also has certain advantages in the manufacturing process. For example, it can be mass-produced through molds to further reduce manufacturing costs. At the same time, the shape and spacing of the corrugations can be adjusted according to actual needs to meet the sealing requirements and flow efficiency requirements in different scenarios.

[0091] According to an optional embodiment, the second inflatable part 112 is connected to the conduit 10. Since the channel 120 is disposed in the second inflatable part 112, by connecting the second inflatable part 112 to the conduit 10, not only the connectivity between the channel 120 and the second opening 12 can be effectively ensured, but also the structural stability of the connection area can be ensured, thereby preventing the connection between the channel 120 and the second opening 12 from rupture or leakage when subjected to external pressure or gas flow impact.

[0092] Specifically, the structural design of the second inflatable part 112 fully considers the sealing and pressure resistance of the connection part. For example, by optimizing the connection method between the second inflatable part 112 and the catheter 10, such as by welding, gluing or one-piece molding, the connection part can form a high-strength airtight connection. In addition, the flexible material properties of the second inflatable part 112 itself can disperse the pressure in the expanded state, so that the stress on the connection is evenly distributed, further reducing the risk of rupture.

[0093] According to an optional embodiment, the proximal side of the first inflatable portion 111 is connected to the catheter 10. The first inflatable portion 111 will gradually expand during the inflation process, and the volume will increase significantly. By fixing the proximal end of the first inflatable portion 111 to the catheter 10, it can be deformed and expanded toward the first opening 11 with the connection point with the catheter 10 as the support point during inflation. Such a design can not only provide a more stable inflation path, but also apply a certain pressure to the bleeding side lung during the inflation process.

[0094] Specifically, when the first inflatable portion 111 gradually expands, its deformation will push the blood in the cavity 13 to move toward the bleeding lung. In this process, the flow of blood will cause the internal pressure of the bleeding lung to increase rapidly. The increase in the intrapulmonary pressure exerts a certain pressure on the bleeding site, thereby slowing down or even stopping the bleeding in a short time. This design achieves the goal of rapid hemostasis by utilizing the expansion characteristics of the first inflatable portion 111, providing an efficient solution for first aid and emergency treatment.

[0095] It is understandable that by connecting the proximal end of the first inflatable portion 111 to the catheter 10, the uncertainty of the expansion direction can be effectively reduced during the expansion process, avoiding uneven force distribution or additional impact on the non-bleeding lung due to unstable expansion path. In addition, as the first inflatable portion 111 gradually expands, its expansion range can accurately cover the target area, thereby maximizing the efficiency and effect of hemostasis.

[0096] For example, in actual application, by adjusting the inflation rate and pressure of the first inflation part 111, the hemostatic effect can be flexibly adjusted according to the bleeding situation. At the same time, since the deformation of the first inflation part 111 always takes the catheter 10 as the fulcrum, its operation process is predictable and stable, reducing the adverse consequences caused by deformation deviation. This design not only improves the functionality of the device, but also enhances its safety and controllability in clinical use, and further optimizes the speed and effect of hemostatic treatment.

[0097] According to an optional embodiment, the first inflatable portion 111 is movably matched with the catheter 10. The main purpose of such a design is to cope with the special situation of abnormally high lung pressure and avoid lung damage caused by high pressure. Specifically, after the first inflatable portion 111 closes the first opening 11, if the pressure of the lung on the side of the first opening 11 suddenly increases, the first inflatable portion 111 can be pushed to move axially in the catheter 10, thereby forming a pressure relief channel, effectively reducing the pressure in the isolated lung and achieving the purpose of protecting the lung.

[0098] It is understandable that although the total surface area of ​​the alveoli in an adult's lungs is about 50-100 square meters and the total pressure that can be tolerated is relatively high, in certain special circumstances, such as acute bleeding, abnormal ventilation, or other medical emergencies, the local pressure in the lungs may quickly exceed their tolerance. In order to cope with this situation, the movable connection design of the first inflatable portion 111 allows it to move under force after the pressure reaches a certain threshold. This movement process is equivalent to providing a safe pressure relief mechanism for high-pressure lungs, thereby reducing the risk of alveolar damage or rupture.

[0099] By setting the first inflatable part 111 as a movable structure, the change of lung pressure can be adjusted in time with sensitive pressure response characteristics during operation. When the first inflatable part 111 moves in the catheter 10 after being pressurized, it will not affect the sealing function of the first opening 11, but can provide additional space for the isolation chamber to relieve the internal high pressure.

[0100] In practical applications, by optimizing the range of motion and movement resistance of the first inflatable part 111, the pressure relief threshold can be flexibly adjusted according to the different requirements of the patient's lung tolerance. In this way, the design is not only suitable for patients of different body shapes and lung function conditions, but also can provide higher safety guarantees during emergency or intraoperative operations. At the same time, since the active matching design can effectively absorb and release excessive pressure, this design significantly reduces the secondary damage that may be caused to the patient due to equipment design limitations.

[0101] According to an optional embodiment, a sticky layer is provided in the channel 120. The sticky layer can enhance the sealing performance of the channel 120 in the closed state, ensure that the inner wall of the channel 120 can fit tightly, and effectively avoid the accidental opening caused by external force or airflow interference. When the capsule 110 switches from the collapsed state to the expanded state, with the stretching effect of the capsule 110, the adhesion of the sticky layer is gradually overcome, so that the channel 120 is smoothly opened and the gas circulation is convenient. Exemplarily, the viscosity of the sticky layer is set to be relatively small, ensuring that the capsule 110 can easily open the channel 120 when it is inflated without hindering the function of the capsule 110. This design can achieve a good balance between maintaining high sealing when the channel 120 is closed and convenience when the channel 120 is opened.

[0102] According to an optional embodiment, the driving member 200 includes a first pipeline 210, and the first pipeline 210 is connected to the sac 110. It is understandable that the pipeline can be pre-set in the catheter 10 to ensure a compact structure while improving the overall convenience of operation. In some embodiments, the driving member 200 further includes an interface and a one-way valve located at the proximal end of the first pipeline 210. The interface can be connected to a gas supply device, such as a manual airbag, a mechanical ventilation device or other gas supply system, so as to facilitate the delivery of gas to the first pipeline 210. The one-way valve is used to limit the direction of the airflow, allowing only gas to enter the sac 110, preventing gas backflow, and improving the stability and reliability of the inflation of the sac 110.

[0103] Through such a design, the inflation process of the bladder 110 is more efficient and safe, avoiding insufficient expansion of the bladder 110 or instability of the channel 120 due to fluctuations in the air supply system or unexpected factors. At the same time, the combination of the viscous layer and the driver 200 enables the device to perform better in dynamic sealing and airflow regulation, providing reliable support in medical emergencies. For example, while providing high sealing, the viscous layer also ensures that the channel 120 can be opened smoothly after the bladder 110 is inflated, and the one-way valve design of the driver 200 further improves the operational safety and patient protection capabilities of the device.

[0104] A second aspect of this embodiment describes a catheter in detail.

[0105] The embodiment of the present application provides a catheter, including a tube body 14, wherein the tube body 14 has a lumen 13, and the distal end of the tube body 14 has a first opening 11 and a second opening 12 both communicating with the lumen 13, wherein the first opening 11 is located at the distal end side of the second opening 12. The tube body 14 is provided with a channel switching assembly in the above embodiment, and the channel switching assembly is used to control the closed state of the first opening 11 or the second opening 12, so that one of the first opening 11 and the second opening 12 is in an open state and the other is in a closed state.

[0106] Specifically, the channel switching assembly can keep one of the first opening 11 and the second opening 12 open and close the other as needed, thereby realizing flexible switching of the gas flow path. Through this design, the catheter 10 can adapt to different ventilation needs in clinical operations, meet the use requirements in complex medical scenarios, and improve the safety and efficiency of patient treatment.

[0107] According to an optional embodiment, a first airbag 15 and a second airbag 16 are disposed outside the tube body 14, the first airbag 15 is located between the first opening 11 and the second opening 12, the second airbag 16 is located at the proximal side of the second opening 12, and the first airbag 15 and the second airbag 16 are connected with a second pipeline 17. The first airbag 15 and the second airbag 16 can fix the tube body 14 in the trachea, so that the tube body 14 has a stable connection with the trachea, thereby providing a stable air supply.

[0108] In addition, through the coordinated cooperation of the first airbag 15 and the second airbag 16, various emergencies can be effectively dealt with. For example, in the case of tracheal bleeding, the position of the tube body 14 can be adjusted so that the bleeding site is located between the first airbag 15 and the second airbag 16. At this time, the area between the first airbag 15 and the second airbag 16 forms a closed space, which can apply appropriate pressure to the bleeding point to achieve the effect of compression hemostasis. During the hemostasis process, the lungs can continue to be supplied with air normally through the first opening 11 to ensure that the patient's respiratory support is not interrupted.

[0109] After hemostasis is completed, the first opening 11 can be closed by using the channel switching component, and the second opening 12 can be opened, so that the blood accumulated between the first airbag 15 and the second airbag 16 can be discharged into the cavity 13 of the tube body 14 through the second opening 12, thereby completing the removal of blood stasis. When the blood stasis is removed, the gas of the first airbag 15 and the second airbag 16 is released to collapse the airbags, and then the tube body 14 is pulled out of the trachea. This design can not only achieve rapid hemostasis and blood stasis removal, but also provide a stable airway during the entire operation, significantly improving the efficiency and safety of treating sudden tracheal bleeding.

[0110] 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. A channel switching assembly, applied to a catheter (10), the catheter (10) comprising a first opening (11) and a second opening (12), characterized in that: The channel switching component comprises: A blocking member (100) configured to close the first opening (11) or the second opening (12), so that one of the first opening (11) and the second opening (12) is in an open state and the other is in a closed state; a driving member (200) for driving the blocking member (100) to control the closed state of the first opening (11) or the second opening (12); The blocking member (100) comprises a balloon (110) and a channel (120); the balloon (110) is arranged on the catheter (10) and has an expanded state and a collapsed state; when the balloon (110) is inflated, it can enter an expanded state from the collapsed state; when the balloon (110) is in the expanded state, the first opening (11) can be closed; The channel (120) is at least partially disposed in the capsule (110), and the channel (120) connects the catheter (10) with the second opening (12); Wherein, when the capsule (110) is in an expanded state, the channel (120) is opened under the action of the capsule (110); when the capsule (110) is in a collapsed state, the channel (120) is at least partially collapsed and closed along with the capsule (110).

2. A channel switching component according to claim 1, characterized in that: The catheter (10) has a cavity (13), the first opening (11) and the second opening (12) are both in communication with the cavity (13), and the cavity (13) is distributed along the length direction of the catheter (10); When the balloon (110) is in an expanded state, the point where the channel (120) communicates with the catheter (10) is located in the central axis region of the cavity (13).

3. A channel switching component according to claim 1, characterized in that: The channel (120) is formed in the capsule (110), and the capsule (110) is connected to the catheter (10) at least near the second opening (12).

4. A channel switching component according to claim 1, characterized in that: At least the portion where the channel (120) communicates with the catheter (10) is located in the balloon (110).

5. A channel switching component according to claim 1, characterized in that: The sac (110) comprises a first inflatable portion (111) and a second inflatable portion (112) which are connected to each other, and the channel (120) is arranged in the second inflatable portion (112); When the sac (110) is in an expanded state, the first inflatable portion (111) is used to close the first opening (11), and the second inflatable portion (112) is used to open the channel (120); When the balloon (110) is in a collapsed state, the channel (120) collapses and closes along with the second inflatable portion (112).

6. A channel switching component according to claim 5, characterized in that: When the sac (110) is in a collapsed state, the second inflatable portion (112) at least partially forms a folded structure, so that at least a portion of the channel (120) is folded; and / or, the second inflatable portion (112) is connected to the conduit (10); And / or, the proximal end side of the first inflation portion (111) is connected to the catheter (10).

7. A channel switching assembly according to claim 5, characterized in that: The first inflatable portion (111) is movably matched with the catheter (10).

8. A channel switching component according to any one of claims 1 to 7, characterized in that: A sticky layer is provided in the channel (120); And / or, the driving member (200) comprises a first pipeline (210), and the first pipeline (210) is connected to the capsule (110).

9. A catheter, characterized in that: The invention comprises a tube body (14), wherein the tube body (14) has a cavity (13) therein, and the distal end of the tube body (14) has a first opening (11) and a second opening (12) both of which are in communication with the cavity (13), and the first opening (11) is located at the distal end side of the second opening (12); The tube body (14) is provided with a channel switching component according to any one of claims 1 to 8, and the channel switching component is used to control the closing state of the first opening (11) or the second opening (12), so that one of the first opening (11) and the second opening (12) is in an open state and the other is in a closed state.

10. A catheter according to claim 9, characterized in that: A first airbag (15) and a second airbag (16) are arranged outside the tube body (14); the first airbag (15) is located between the first opening (11) and the second opening (12); the second airbag (16) is located on the proximal side of the second opening (12); and the first airbag (15) and the second airbag (16) are connected to a second pipeline (17).

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