Lung isolation ventilation tube

Abstract

The invention discloses a lung isolation ventilation catheter, comprising a main tracheal catheter and a bronchial catheter connected to one end of the main tracheal catheter, wherein a first air bag is sleeved on the main tracheal catheter, and a second air bag is sleeved on the bronchial catheter, wherein the first air bag is connected to a first inlet and outlet air control component through a first inlet and outlet air pipe, and the second air bag is connected to a second inlet and outlet air control component through a second inlet and outlet air pipe, and an openable and closable air outlet mechanism is further provided on the main tracheal catheter between the first air bag and the second air bag. The lung isolation ventilation catheter has the advantages of simple structure, easy manufacture, convenient operation, wide application range, and can reduce intubation damage.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a lung isolation ventilation catheter. Background Art

[0002] Lung isolation technology is often used in thoracic surgery. To achieve single-lung ventilation, the commonly used instruments are double-lumen endotracheal tubes and bronchial blockers. Among them, the double-lumen endotracheal tube is to divide the endotracheal tube into two mutually isolated lumens, one of which is slightly longer than the other. Its characteristic is that it can temporarily separate the ventilation of the left and right common bronchus. It can ventilate one lung through a single lumen, or ventilate both lumens at the same time to achieve single-lung ventilation. However, the double-lumen endotracheal tube has a larger lumen and causes greater trauma to the patient; the bronchial blocker uses an air bag to block one main bronchus, thereby achieving ventilation of the non-blocked lung, but the bronchial blocker is easy to shift and is not convenient for attracting blood and secretions. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a lung isolation ventilation catheter which has a simple structure, is easy to manufacture, is convenient to operate, has a wide range of applications, and can reduce intubation damage.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A lung isolation ventilation catheter comprises a main tracheal catheter and a bronchial catheter connected to one end of the main tracheal catheter, wherein the main tracheal catheter is provided with a first air bag, and the bronchial catheter is provided with a second air bag, the first air bag is connected to a first inlet and outlet air control component via a first inlet and outlet air pipe, the second air bag is connected to a second inlet and outlet air control component via a second inlet and outlet air pipe, and an openable and closable air outlet mechanism is also provided on the main tracheal catheter between the first air bag and the second air bag.

[0006] As a further improvement of the above technical solution:

[0007] The openable and closable air outlet mechanism includes a chamber arranged on the wall of the main tracheal tube and a third air bag arranged in the chamber, the chamber has a first air vent connected to the main tracheal tube lumen and a second air vent connected to the outside of the chamber, the third air bag is connected to the third air inlet and outlet control component through a third air inlet and outlet pipe, and the third air bag closes the first air vent and / or the second air vent when inflated, and opens the first air vent and the second air vent at the same time when deflated.

[0008] The chamber is surrounded by a main tracheal tube wall and a diaphragm connected to the outside of the main tracheal tube wall, the first vent is arranged on the main tracheal tube wall, and the second vent is arranged on the diaphragm.

[0009] The first air inlet and outlet control component, the second air inlet and outlet control component and the third air inlet and outlet control component are cuffs.

[0010] The first inlet and outlet trachea, the second inlet and outlet trachea and the third inlet and outlet trachea all extend to the side of the first air bag away from the bronchial catheter, and the first inlet and outlet trachea, the second inlet and outlet trachea and the third inlet and outlet trachea between the bronchial catheter and the first air bag are all located within the tube wall of the main tracheal catheter.

[0011] The first air inlet and outlet pipe, the second air inlet and outlet pipe and the third air inlet and outlet pipe all have an extended section extending outside the tube wall of the main tracheal catheter, the extended section of the first air inlet and outlet pipe is connected to the first air inlet and outlet control component, the extended section of the second air inlet and outlet pipe is connected to the second air inlet and outlet control component, and the extended section of the third air inlet and outlet pipe is connected to the third air inlet and outlet control component.

[0012] The extension direction of the bronchial tube deviates from the extension direction of the main tracheal tube.

[0013] The lung isolation ventilation catheter also includes a blood and sputum suction tube, one end opening of the blood and sputum suction tube is located between the openable and closable air outlet mechanism and the second air bag, and the other end opening of the blood and sputum suction tube is an openable and closable opening.

[0014] The blood and sputum suction tube extends to the side of the first air bag away from the bronchial tube, and the blood and sputum suction tube between the bronchial tube and the first air bag is located inside the tube wall of the main tracheal tube. The blood and sputum suction tube has an extended section extending outside the tube wall of the main tracheal tube, and the openable and closable opening is arranged on the extended section of the blood and sputum suction tube.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] When the lung isolation ventilation catheter of the present invention is used, the lung isolation ventilation catheter is inserted into the trachea, and the bronchial catheter is inserted into the bronchus on the ventilation side, the first airbag and the second airbag are inflated to achieve sealing, and the main tracheal catheter and the bronchial catheter are fixed, so that single-lung ventilation can be achieved, and double-lung ventilation can be achieved when the openable and closable air outlet mechanism is opened. The lung isolation ventilation catheter only needs to use a main tracheal catheter with a smaller diameter, which can reduce intubation damage, and also has the advantages of simple structure, easy manufacture, convenient operation, and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the partial main cross-sectional structure of the lung isolation ventilation catheter.

[0018] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of a lung isolation ventilation catheter when in use.

[0020] Legend:

[0021] 1. Main tracheal catheter; 2. Bronchial catheter; 3. First air bag; 4. Second air bag; 5. Chamber; 51. First vent; 52. Second vent; 6. Third air bag; 7. Diaphragm; 8. Blood and sputum suction tube; 101. First inlet and outlet trachea; 102. Second inlet and outlet trachea; 103. Third inlet and outlet trachea. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 3 As shown, the lung isolation ventilation catheter of this embodiment includes a main tracheal catheter 1 and a bronchial catheter 2 connected to one end of the main tracheal catheter 1, a first airbag 3 is sleeved on the main tracheal catheter 1, and a second airbag 4 is sleeved on the bronchial catheter 2. The first airbag 3 is connected to the first inlet and outlet air control component through the first inlet and outlet air pipe 101, and the second airbag 4 is connected to the second inlet and outlet air control component through the second inlet and outlet air pipe 102. An openable and closable air outlet mechanism is also provided on the main tracheal catheter 1 between the first airbag 3 and the second airbag 4. When in use, the lung isolation ventilation catheter is inserted into the trachea, and the bronchial catheter 2 is inserted into the bronchus on the ventilation side, the first airbag 3 and the second airbag 4 are inflated to achieve sealing, and the main tracheal catheter 1 and the bronchial catheter 2 are fixed, so that single-lung ventilation can be achieved, and double-lung ventilation can also be achieved when the openable and closable air outlet mechanism is opened. The lung isolation ventilation catheter only needs to use a main tracheal catheter 1 with a smaller diameter, which can reduce intubation damage, and also has the advantages of simple structure, easy manufacture, convenient operation and wide application range.

[0024] In this embodiment, the openable and closable air outlet mechanism comprises a chamber 5 provided on the tube wall of the main tracheal tube 1 and a third air bag 6 provided in the chamber 5. The chamber 5 has a first vent 51 communicating with the tube lumen of the main tracheal tube 1 and a second vent 52 communicating with the outside of the chamber 5. The third air bag 6 is connected to the third air inlet and outlet control assembly through the third air inlet and outlet pipe 103. The third air bag 6 closes the first vent 51 and / or the second vent 52 when inflated, and opens the first vent 51 and the second vent 52 simultaneously when deflated. When the third air inlet and outlet control assembly inflates the third air bag 6 through the third air inlet and outlet pipe 103, the third air bag 6 expands and fills the chamber 5, closing the first vent 51 and / or the second vent 52, that is, realizing the closed state of the openable and closable air outlet mechanism, at which time the gas in the main tracheal tube 1 cannot be discharged through the openable and closable air outlet mechanism. When the third air inlet and outlet control assembly exhausts air to the third airbag 6 through the third air inlet and outlet pipe 103, the third airbag 6 shrinks, and the first vent 51 and / or the second vent 52 are opened, that is, the open state of the openable and closable air outlet mechanism is realized, and the gas in the main tracheal tube 1 can be discharged in sequence through the first vent 51, the chamber 5, and the second vent 52. Preferably, the first vent 51 and the second vent 52 are closed simultaneously when the third airbag 6 is inflated.

[0025] The openable and closable air outlet mechanism adopts a combined structure of the above-mentioned chamber 5 and the third airbag 6, which not only saves space, helps to reduce the overall size of the lung isolation ventilation catheter, and further reduces intubation damage, but also has low cost, simple control, rapid opening and closing, and good stability. Moreover, since the third airbag 6 is located in the chamber 5, damage to the bronchi by the third airbag 6 can be avoided.

[0026] In this embodiment, the chamber 5 is surrounded by the wall of the main tracheal tube 1 and the diaphragm 7 connected to the outside of the wall of the main tracheal tube 1, the first vent 51 is provided on the wall of the main tracheal tube 1, and the second vent 52 is provided on the diaphragm 7. This structure is simple and convenient to manufacture, and has low cost. Preferably, the diaphragm 7 is sealed and connected to the wall of the main tracheal tube 1 by bonding or welding.

[0027] In this embodiment, the first air inlet and outlet control component, the second air inlet and outlet control component and the third air inlet and outlet control component are cuffs, which are simple and convenient to control and have low cost. In other embodiments, the first air inlet and outlet control component, the second air inlet and outlet control component and the third air inlet and outlet control component can also use other existing components as long as they can achieve inflation and deflation.

[0028] In this embodiment, the first inlet and outlet trachea 101, the second inlet and outlet trachea 102 and the third inlet and outlet trachea 103 are arranged to extend in a direction away from the bronchial tube 2 in close contact with the main tracheal tube 1. This is conducive to improving the compactness of the structure and reducing the volume of the lung isolation ventilation tube.

[0029] In this embodiment, the first air inlet and outlet tube 101, the second air inlet and outlet tube 102 and the third air inlet and outlet tube 103 all extend to the side of the first air bag 3 away from the bronchial tube 2, and the first air inlet and outlet tube 101, the second air inlet and outlet tube 102 and the third air inlet and outlet tube 103 between the bronchial tube 2 and the first air bag 3 are all located inside the tube wall of the main tracheal tube 1. This is conducive to improving the compactness of the structure, reducing the volume of the lung isolation ventilation tube, and avoiding trauma to the patient.

[0030] In this embodiment, the first air inlet and outlet pipe 101, the second air inlet and outlet pipe 102 and the third air inlet and outlet pipe 103 all have an extended section extending outside the tube wall of the main tracheal tube 1, and the extended sections of the first air inlet and outlet pipe 101, the second air inlet and outlet pipe 102 and the third air inlet and outlet pipe 103 are all located on the side of the first air bag 3 away from the bronchial tube 2, the extended section of the first air inlet and outlet pipe 101 is connected to the first air inlet and outlet control component, the extended section of the second air inlet and outlet pipe 102 is connected to the second air inlet and outlet control component, and the extended section of the third air inlet and outlet pipe 103 is connected to the third air inlet and outlet control component. This arrangement facilitates the connection of the first air inlet and outlet control component, the second air inlet and outlet control component and the third air inlet and outlet control component.

[0031] In this embodiment, the first airbag 3 clamps the first air inlet and outlet pipe 101, the second air inlet and outlet pipe 102 and the third air inlet and outlet pipe 103 on the outer wall of the main tracheal tube 1. This is conducive to improving the stability of the first air inlet and outlet pipe 101, the second air inlet and outlet pipe 102 and the third air inlet and outlet pipe 103.

[0032] In this embodiment, the extension direction of the bronchial tube 2 deviates from the extension direction of the main tracheal tube 1, so as to adapt to the bronchus and reduce intubation damage.

[0033] In this embodiment, the lung isolation ventilation catheter also includes a blood and sputum suction tube 8, one end of the blood and sputum suction tube 8 is opened between the openable and closable air outlet mechanism and the second air bag 4, and the other end of the blood and sputum suction tube 8 is opened as an openable and closable port, through which the blood and sputum on the surgical side during the operation can be sucked out. The openable and closable port is opened and connected to a negative pressure suction device to suck out blood and sputum; when ventilating both lungs, the suction port is closed to prevent air leakage. The above-mentioned openable and closable suction port can be an on-off valve or a pluggable plug inserted into the end of the blood and sputum suction tube 8.

[0034] In this embodiment, the blood and sputum suction tube 8 extends to the side of the first air bag 3 away from the bronchial tube 2, and the blood and sputum suction tube 8 between the bronchial tube 2 and the first air bag 3 is located inside the tube wall of the main tracheal tube 1. The blood and sputum suction tube 8 has an extended section extending outside the tube wall of the main tracheal tube 1, and the openable and closable opening is arranged on the extended section of the blood and sputum suction tube 8, which is beneficial to improving the compactness of the structure and reducing the volume of the lung isolation ventilation catheter, while facilitating the opening and closing of the openable and closable opening and connecting the negative pressure suction device.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A lung isolation ventilation catheter, characterized in that: The invention comprises a main tracheal tube (1) and a bronchial tube (2) connected to one end of the main tracheal tube (1); the main tracheal tube (1) is provided with a first air bag (3); the bronchial tube (2) is provided with a second air bag (4); the first air bag (3) is connected to a first air inlet and outlet control component via a first air inlet and outlet pipe (101); the second air bag (4) is connected to a second air inlet and outlet control component via a second air inlet and outlet pipe (102); an openable and closable air outlet mechanism is also provided on the main tracheal tube (1) between the first air bag (3) and the second air bag (4); The openable and closable air outlet mechanism comprises a chamber (5) arranged on the wall of the main tracheal tube (1) and a third air bag (6) arranged in the chamber (5); the chamber (5) has a first air vent (51) communicating with the tube cavity of the main tracheal tube (1) and a second air vent (52) communicating with the outside of the chamber (5); the third air bag (6) is connected to a third air inlet and outlet control assembly via a third air inlet and outlet pipe (103); and the third air bag (6) closes the first air vent (51) and / or the second air vent (52) when inflating, and closes the third air bag (6) when deflated. When breathing is inhaled, the first vent (51) and the second vent (52) are opened simultaneously; the chamber (5) is surrounded by the wall of the main tracheal tube (1) and a diaphragm (7) connected to the outside of the wall of the main tracheal tube (1); the first vent (51) is arranged on the wall of the main tracheal tube (1); the second vent (52) is arranged on the diaphragm (7); the first inlet and outlet air control component, the second inlet and outlet air control component and the third inlet and outlet air control component are cuffs; the first inlet and outlet air pipe (101), the second inlet and outlet air pipe (102) and the third inlet and outlet air pipe (102) are 03) all extend to the side of the first airbag (3) away from the bronchial catheter (2), and the first inlet and outlet trachea (101), the second inlet and outlet trachea (102) and the third inlet and outlet trachea (103) between the bronchial catheter (2) and the first airbag (3) are all located within the tube wall of the main tracheal catheter (1), the lung isolation ventilation catheter also includes a blood and sputum suction tube (8), one end opening of the blood and sputum suction tube (8) is located between the openable and closable air outlet mechanism and the second airbag (4), and the other end opening of the blood and sputum suction tube (8) is an openable and closable opening.

2. The lung isolation ventilation catheter according to claim 1, characterized in that: The first air inlet and outlet pipe (101), the second air inlet and outlet pipe (102) and the third air inlet and outlet pipe (103) all have a protruding section extending out of the tube wall of the main airway tube (1); the protruding section of the first air inlet and outlet pipe (101) is connected to a first air inlet and outlet control component, the protruding section of the second air inlet and outlet pipe (102) is connected to a second air inlet and outlet control component, and the protruding section of the third air inlet and outlet pipe (103) is connected to a third air inlet and outlet control component.

3. The lung isolation ventilation catheter according to claim 1, characterized in that: The extension direction of the bronchial tube (2) deviates from the extension direction of the main tracheal tube (1).

4. The lung isolation ventilation catheter according to claim 1, characterized in that: The blood and sputum suction tube (8) extends to the side of the first air bag (3) away from the bronchial tube (2), and the blood and sputum suction tube (8) between the bronchial tube (2) and the first air bag (3) is located inside the tube wall of the main bronchial tube (1), and the blood and sputum suction tube (8) has an extended section extending outside the tube wall of the main bronchial tube (1), and the openable and closable opening is arranged on the extended section of the blood and sputum suction tube (8).

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