Double-lumen bronchial cannula

Abstract

The utility model discloses a double lumen bronchial intubation, including: two intubation and cuff, the intubation includes the main tube section and the branch tube section that is provided at the head end of main tube section and is communicated with the main tube section, the main tube sections of the two intubation are arranged side by side in the first direction and are connected, the branch tube sections of the two intubation form the bifurcation at the head of the main tube section, the cuff comprises a main body part and two branch parts, inner cavities of the main body part and the two branch parts are communicated with each other, the main body part surrounds one side, close to the head end, of the connected main pipe section, and the two branch parts respectively surround branch pipe sections of the two intubation tubes. The operation difficulty is reduced, the clinical operation is simplified, the learning curve is shortened and the operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a double-lumen bronchial intubation tube. Background Art

[0002] Thoracoscopic thoracic surgery requires lung isolation and one-lung ventilation. Currently, the methods for achieving one-lung ventilation in clinical practice include single-lumen intubation, occlusion tube, and double-lumen bronchial intubation tube. Among them, the double-lumen bronchial intubation tube is the most commonly used. The existing double-lumen bronchial intubation tube needs to select a left double-lumen bronchial intubation tube or a right double-lumen bronchial intubation tube according to the surgical side. During the intubation process, first, the double-lumen bronchial intubation tube needs to be inserted into the human trachea. The head end part structure of the double-lumen bronchial intubation tube is inserted into the bronchus. The gap between the double-lumen bronchial intubation tube and the inner wall of the bronchus can be blocked by a cuff structure. The position of the cuff blockage should not be too deep in the bronchus, which will cause some lung lobes to be unable to ventilate, resulting in low oxygenation during the operation. The position of the cuff blockage should not be outside the bronchus either, which will cause the opening of the other bronchus to be blocked, resulting in the inability of this side bronchus to ventilate. Therefore, the position of the cuff blockage needs to be observed and judged by a fiberoptic bronchoscope to determine whether the position is accurate. Limited by the structure of the bronchial intubation tube, the position of the cuff is not easily observed by the fiberoptic bronchoscope. Using methods such as deep insertion and retraction is also limited by the proficiency of the doctor, and the operation process is complex and difficult. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a double-lumen bronchial intubation tube, which has stronger versatility and can be applied regardless of whether the surgical side is the left lung or the right lung. And it can be directly positioned after insertion, reducing the operation difficulty, simplifying the clinical operation, shortening the learning curve, and being easy to operate.

[0004] To achieve the above object, according to an embodiment of the utility model, a double-lumen bronchial intubation tube is provided. The double-lumen bronchial intubation tube includes: two intubation tubes, each intubation tube includes a main tube section and a branch tube section provided at the head end of the main tube section and communicating with the main tube section. The main tube sections of the two intubation tubes are arranged side by side and connected in a first direction. The branch tube sections of the two intubation tubes form a bifurcation at the head of the main tube section.

[0005] A cuff, the cuff includes a main body part with interconnected inner cavities and two branch parts. The main body part surrounds one side of the connected main tube sections close to the head end, and the two branch parts respectively surround the branch tube sections of the two intubation tubes.

[0006] According to the double-lumen bronchial intubation tube of the embodiment of the utility model, the double-lumen bronchial intubation tube has stronger versatility and can be applied regardless of whether the surgical side is the left lung or the right lung. And it can be directly positioned after insertion, reducing the operation difficulty, simplifying the clinical operation, shortening the learning curve, and being easy to operate.

[0007] In addition, the double-lumen bronchial intubation tube according to the above embodiments of the present utility model may further have the following additional technical features:

[0008] According to an embodiment of the present utility model, the lengths of the branch pipe segments corresponding to the sides where the two branch portions of the cuff are close to each other are longer than the lengths of the branch pipe segments corresponding to the sides where the branch portions are far from each other.

[0009] According to an embodiment of the present utility model, the nozzle openings formed at the head ends of the two intubation tubes are beveled openings, and the nozzle openings of the two intubation tubes are arranged oppositely;

[0010] And / or, the head ends of the two intubation tubes are formed with guiding surfaces that extend obliquely from the middle of the two intubation tubes to both sides in the direction close to the head end.

[0011] According to an embodiment of the present utility model, the double-lumen bronchial intubation tube further includes: a connecting member, the connecting member is arranged at the head end of the double-lumen bronchial intubation tube, and the connecting member is used to fix the two branch pipe segments so that the two branch pipe segments are arranged side by side and connected, wherein the connecting member is detachable or dissolvable.

[0012] According to an embodiment of the present utility model, the intubation tube further includes: a fixing section, the fixing section is arranged at the head end of the branch pipe segment.

[0013] According to an embodiment of the present utility model, the fixing section is formed into a porous frame structure or the fixing section is formed into a tubular structure with openings on the side part communicating with the end nozzle opening.

[0014] According to an embodiment of the present utility model, the fixing section is formed into a tube, and air vents are provided on the tube walls on the sides where the two intubation tubes are far from each other on the fixing sections of the two intubation tubes.

[0015] According to an embodiment of the present utility model, the intubation tube further includes an external connecting tube section arranged at the tail end of the main pipe section, and at least one of the external connecting tube sections of the two intubation tubes is provided with a first mark around which words can be written.

[0016] According to an embodiment of the present utility model, the main pipe sections of the two intubation tubes together form the main trunk part of the double-lumen bronchial intubation tube, and a plurality of scale lines that are spaced apart in the length direction of the main trunk part and have different colors are provided on the tube wall of the main trunk part, and the scale lines are arranged around the tube wall of the main trunk part.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 is a schematic structural view of a double-lumen bronchial intubation tube according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural view of a double-lumen bronchial intubation tube according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic structural view of a double-lumen bronchial intubation tube after being inserted into the lung according to an embodiment of the present utility model;

[0022] Figure 4 is a partial schematic structural view of a double-lumen bronchial intubation tube according to an embodiment of the present utility model;

[0023] Figure 5 is a schematic structural view of a double-lumen bronchial intubation tube according to an embodiment of the present utility model.

[0024] Reference numerals:

[0025] Double-lumen bronchial intubation tube 100, intubation tube 10, main tube section 1, scale line 111, branch tube section 2, fixed section 3, ventilation port 31, external connection tube section 4, first mark 41, tube orifice 101, guiding surface 102, cuff 20, main body part 201, branch part 202, connecting member 30, bifurcation point 400, carina part 500, external inflation port 600. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Thoracoscopic thoracic surgery requires lung isolation and single-lung ventilation. Currently, the methods to achieve single-lung ventilation in clinical practice include single-lumen intubation, occlusion tube, and double-lumen bronchial intubation. Among them, double-lumen bronchial intubation is the most commonly used. The existing double-lumen bronchial intubation needs to select a left double-lumen bronchial intubation or a right double-lumen bronchial intubation according to the surgical side. During the intubation process, first, the double-lumen bronchial intubation needs to be inserted into the human trachea, and the head end part structure of the double-lumen bronchial intubation is inserted into the bronchus. The gap between the double-lumen bronchial intubation and the inner wall of the bronchus can be blocked by the cuff structure. The position of the cuff blockage cannot be too deep in the bronchus, which will cause some lung lobe structures to be unable to ventilate, resulting in low oxygenation during the operation. The position of the cuff blockage cannot overflow outside the bronchus either, which will cause the opening of the other bronchus to be blocked, resulting in the inability of the other bronchus to ventilate. Therefore, the blocking position of the cuff needs to be observed by a fiberoptic bronchoscope to judge whether the position is accurate. Limited by the structure of the bronchial intubation, the position of the cuff is not easily observed by the fiberoptic bronchoscope. Using methods such as deep insertion and retraction is also limited by the proficiency of the doctor, and the operation process is complex and difficult.

[0030] Therefore, the embodiment of the present utility model designs a double-lumen bronchial intubation 100 with stronger versatility, which can be applied regardless of whether the surgical side is the left lung or the right lung, and can be directly positioned after insertion, reducing the operation difficulty, simplifying the clinical operation, shortening the learning curve, and being easy to operate.

[0031] The double-lumen bronchial intubation tube 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] As Figures 1 - 5 shown, the double-lumen bronchial intubation tube 100 according to an embodiment of the present invention includes: two intubation tubes 10 and a cuff 20.

[0033] Wherein, any one of the two intubation tubes 10 can ventilate the left lung after the double-lumen bronchial intubation tube 100 is inserted into the trachea, and the other can ventilate the right lung. Before intubation with the double-lumen bronchial intubation tube 100, there is no need to distinguish between the two intubation tubes 10, and it can be applied regardless of whether the surgical side is the left lung or the right lung. The double-lumen bronchial intubation tube 100 has stronger versatility and simplifies clinical operations.

[0034] The intubation tube 10 includes a main tube section 1 and a branch tube section 2 provided at the head end of the main tube section 1 and communicating with the main tube section 1. The main tube sections 1 of the two intubation tubes 10 are arranged side by side and connected in a first direction perpendicular to the length direction of the main tube section 1. After the double-lumen bronchial intubation tube 100 is completely inserted into the trachea, the connected main tube sections 1 are inserted into the main trachea. The branch tube sections 2 of the two intubation tubes 10 form a bifurcation at the head of the main tube section 1 and are respectively inserted into the left bronchus and the right bronchus.

[0035] The bifurcation point 400 of the two tracheal tubes 10 contacts the carina 500 of the human body. That is, when the medical staff feels the resistance given by the contact between the carina 500 and the bifurcation point 400 during the insertion process, it can be obtained that the branch tube sections 2 of the two intubation tubes 10 of the double-lumen bronchial intubation tube 100 have been respectively inserted into the left bronchus and the right bronchus, and the information that the bifurcation point 400 of the two tracheal tubes 10 contacts the carina 500. This position is the final position of the double-lumen bronchial intubation tube 100, and no further adjustment is required. Inflate the cuff 20 through the external inflation port 600 to seal the peritubular gap and achieve isolation of the two lungs, reducing the operation difficulty and simplifying clinical operations.

[0036] The branch pipe sections 2 of the two intubation tubes 10 are respectively inserted into the left bronchus and the right bronchus. At the position where the bifurcation point 400 of the two tracheal tubes 10 is matched with the carina 500, the cuff 20 can better seal the gap between the wall of the double-lumen bronchial intubation tube 100 and the inner wall of the trachea or bronchus. Specifically, the cuff 20 includes a main body portion 201 and two branch portions 202 with interconnected inner cavities. The whole cuff 20 can be inflated and deflated together, conveniently realizing the blocking of the gap between the double-lumen bronchial intubation tube 100 and the inner wall of the main trachea or bronchus. The two branch portions 202 respectively surround the branch pipe sections 2 of the two intubation tubes 10 to block the gap between the branch pipe section 2 and the inner wall of the bronchus, avoiding the air flow passing through the gap between the branch pipe section 2 and the inner wall of the bronchus, resulting in abnormal control of the intrapulmonary pressure during the operation, and avoiding ventilation between the left lung and the right lung. The main body portion 201 surrounds the side of the connected main pipe section 1 close to the head end to block the gap between the outer surface of the connected main pipe section 1 and the inner wall of the main trachea, further blocking the gap and ensuring the stability of the overall setting of the airbag.

[0037] That is to say, the double-lumen bronchial intubation tube 100 in the embodiment of the present invention only includes one airbag, and the airbag wraps two branch pipe sections 2 and a part of the main pipe section 1 to simultaneously block the left bronchus and the right bronchus by using one airbag.

[0038] According to the double-lumen bronchial intubation tube 100 of the embodiment of the present invention, the double-lumen bronchial intubation tube 100 has stronger versatility, can be applied to both the left lung and the right lung of the surgical side, and can be directly positioned after insertion, reducing the operation difficulty, simplifying the clinical operation, shortening the learning curve, and being easy to operate.

[0039] Such as Figure 4 As shown, the length of the main pipe section 1 corresponding to the main body portion 201 of the cuff 20 is L1, and L1 is not less than 10 mm. The length L1 of the main pipe section 1 corresponding to the main body portion 201 of the cuff 20 is not less than 10 mm, which can ensure that the cuff 20 covers a sufficient length in the trachea, ensure the sealing area of the cuff 20, ensure the sealing performance, and at the same time ensure the stability of the setting of the cuff 20.

[0040] Currently, in clinical practice, the distance between the opening of the right double-lumen bronchus corresponding to the right upper bronchus and the cuff 20 is 18 mm - 19 mm. However, there is a large proportion of patients whose distance between the opening of the right upper bronchus and the carina is less than 18 mm. By selecting the model of the bronchial intubation tube 100 according to height and gender, the incidence of poor alignment of the opening of the right upper lobe is relatively high, increasing the difficulty of clinical work and the damage to patients.

[0041] To avoid the setting of the cuff 20 affecting the normal ventilation between the right upper bronchus and the outside world, the length of the branch pipe segment 2 corresponding to the side where the two branch parts 202 of the cuff 20 are away from each other is H1. Referring to the commonly used size 37 double-lumen tube in current clinical practice, H1 ≤ 15 mm. That is to say, the length of the branch part 202 of the cuff 20 extending into the bronchus on this side is not greater than 15 mm, so that it will not cover the depth where the opening of the right upper bronchus of some patients is located.

[0042] Further, referring to Figure 5 , since the opening of the right upper bronchus is located in the right bronchus and on the right side wall, the length of the branch pipe segment 2 corresponding to the side where the two branch parts 202 of the cuff 20 are close to each other is longer than the length H1 of the branch pipe segment 2 corresponding to the side where the two branch parts 202 are away from each other. The length H2 of the branch pipe segment 2 corresponding to the side where they are close to each other is even longer. That is to say, the corresponding sealing area of the cuff 20 on this side is larger, which can ensure a better sealing effect of the cuff 20. And there is no bronchial opening on the corresponding bronchial wall on this side, which will not affect the normal ventilation of the lungs. While the length H1 of the branch pipe segment 2 corresponding to the side where they are away from each other is shorter, which can avoid the setting of the cuff 20 covering the depth where the opening of the right upper bronchus is located and affecting the ventilation between the branch pipe segment 2 and the opening of the right upper lung bronchus.

[0043] Referring to Figure 1 、 Figure 4 and Figure 5 , the nozzle 101 formed at the head ends of the two intubation tubes 10 is an inclined opening. The nozzles 101 of the two intubation tubes 10 are arranged opposite to each other, that is, the nozzle 101 of one intubation tube 10 is opened on the side close to the other intubation tube 10. The two opposite nozzles 101 formed as inclined openings can direct the two intubation tubes 10 into the left bronchus and the right bronchus respectively when they come into contact with the carina 500 between the two lungs.

[0044] In some embodiments, the head ends of the two intubation tubes 10 are formed with guide surfaces 102 that extend obliquely from the middle of the two intubation tubes 10 to both sides in the direction close to the head ends. The nozzle surface of the nozzle 101 formed as an inclined opening can be formed as the guide surface 102. During the insertion of the double-lumen bronchial intubation tube 100, when any one of the two guide surfaces 102 of the two intubation tubes 10 comes into contact with the carina 500, the intubation tube 10 can be directed into the bronchus in the corresponding direction, and the other intubation tube 10 will automatically be inserted into the bronchus in the other direction.

[0045] As Figure 1 shown, the double-lumen bronchial intubation tube 100 further includes: a connecting member 30. The connecting member 30 is provided at the head end of the double-lumen bronchial intubation tube 100. The connecting member 30 is used to fix the two branch pipe segments 2. The setting of the connecting member 30 can arrange the two branch pipe segments 2 side by side and connected, so as to reduce the difficulty of inserting the double-lumen bronchial intubation tube 100 into the glottis and avoid damaging the glottis during the insertion process.

[0046] Since the two branch pipe segments 2 need to be connected together before being inserted through the glottis, and need to be separated when passing through the glottis to ensure that they can be inserted into the left and right bronchi respectively, that is, the connecting member 30 should release the connection relationship between the two branch pipe segments 2 after the two branch pipe segments 2 pass through the glottis. Since this process is carried out inside the body, medical staff cannot directly operate on the connecting member 30.

[0047] Therefore, the connecting member 30 can be made of a dissolvable material. Before being inserted through the glottis, the connecting member 30 has not yet dissolved, and the connecting member 30 can connect the two branch pipe segments 2. After the two branch pipe segments 2 are inserted into the glottis, as time goes by, the connecting member 30 is dissolved, and the two branch pipe segments 2 lose the connection of the connecting member 30 and can be inserted into the left and right bronchi respectively.

[0048] In some embodiments, the connecting member 30 is formed as a thin fixing ring. The material of the fixing ring should be a high molecular polymer material with good water solubility and good tissue compatibility, and has a certain toughness, and can dissolve rapidly after coming into contact with tissues after being inserted. Alternatively, the connecting member 30 is a non-toxic dissolvable glue connected between the two branch pipe segments 2.

[0049] In other embodiments, the connecting member 30 is detachable. Before being inserted through the glottis, the connecting member 30 can connect the two branch pipe segments 2. After the two branch pipe segments 2 are inserted into the glottis, the connecting member 30 is detachable and is removed to the outside of the body through the inner cavity of the intubation tube 10 by an external structure. The two branch pipe segments 2 lose the connection of the connecting member 30 and can be inserted into the left and right bronchi respectively.

[0050] In still other embodiments, the connecting member 30 can be a thin sleeve that can slide up and down outside the branch portion 202 of the cuff 20. It has a traction wire, is embedded in the pipe wall, and the tail end extends out of the pipe wall and can be pulled at the distal end. During the operation, after the branch portion passes through the glottis, the traction wire is pulled at the tail end to move the thin sleeve to the main pipe segment and move it outside the area where the cuff 20 is located, so as to avoid its influence on subsequent operations.

[0051] As Figures 1 - 5 shown, the intubation tube 10 further includes: a fixed section 3. The fixed section 3 is provided at the head end of the branch pipe segment 2. The setting of the fixed section 3 can increase the length of the intubation tube 10 inserted into the left and right bronchi, and ensure that the two branch pipe segments 2 can be stably inserted into the left and right bronchi.

[0052] Refer to Figure 3, The setting of the fixed section 3 increases the length of the intubation tube 10 inserted into the left and right bronchi, and may also cause the occlusion of the opening of the right upper lobe bronchus. Therefore, in order to avoid the setting of the fixed section 3 resulting in the inability to ventilate the right upper lobe and low intraoperative oxygenation, the fixed section 3 can be formed into a porous frame structure to increase the length of the intubation tube 10 inserted into the left and right bronchi while ensuring the stability of the setting of the intubation tube 10, and at the same time avoid the setting of the fixed section 3 affecting the normal ventilation of the lungs.

[0053] Alternatively, the fixed section 3 is formed into a tubular structure with openings on the side communicating with the end nozzle 101. Thus, the fixed section 3 itself has sufficient strength to ensure the stability of the setting of the intubation tube 10, and the openings on the fixed section 3 can achieve alignment with the opening of the right upper lobe bronchus, avoiding the inability to ventilate the right upper lobe normally.

[0054] Combined Figure 3 and Figure 4 In the illustrated embodiment, the fixed section 3 is formed into a tube, and ventilation openings 31 are provided on the tube walls on the sides of the fixed sections 3 of the two intubation tubes 10 that are away from each other. The ventilation openings 31 are used to align with the opening of the right upper lobe bronchus. Referring to the commonly used size 37 double-lumen tube in current clinical practice, the distance between the ventilation opening 31 and the main tube section 1 is L3, 10 mm ≤ L3 ≤ 15 mm. The distance L3 between the ventilation opening 31 and the main tube section 1 is not greater than 15 mm. The ventilation opening 31 is shorter in distance from the bifurcation point 400 compared with the ventilation opening 31 in the related art, which is beneficial to improving the accuracy of aligning the ventilation opening 31 with the opening of the right upper lobe bronchus.

[0055] Referring to Figures 1 - 3 , the intubation tube 10 further includes an outer connecting tube section 4 provided at the tail end of the main tube section 1. The outer connecting tube section 4 can be connected to the breathing circuit through existing connecting components. At least one of the outer connecting tube sections 4 of the two intubation tubes 10 is provided with a first mark 41 around it. Words can be written on the first mark 41. After the double-lumen bronchial intubation tube 100 is completely inserted into the intubation tube 10, by auscultation, it can be determined whether the two intubation tubes 10 are inserted into the left lung or the right lung respectively, and whether the intubation tube 10 corresponding to the first mark 41 is inserted into the left lung or the right lung is written on the first mark 41, which is convenient for identifying the side during the operation. The first mark 41 can be a blue circular mark.

[0056] As Figures 1 - 3 shown, the main tube sections 1 of the two intubation tubes 10 together form the main trunk part of the double-lumen bronchial intubation tube 100. A plurality of scale lines 111 of different colors are provided on the tube wall of the main trunk part at intervals in the length direction of the main trunk part. When medical staff cannot see or clearly see the data information marked on the scale lines 111, they can obtain the depth information at different scale positions through the more obvious color information, which is convenient for the operation of medical staff and the reading of data.

[0057] The scale line 111 is arranged around the tube wall of the main body part. Thus, no matter which direction the medical staff observes the insertion depth of the double-lumen bronchial intubation tube 100, the medical staff can clearly see the scale line 111 and use the scale line 111 as a reference to judge the insertion depth of the double-lumen bronchial intubation tube 100, improving the reliability and safety during the process of adjusting the depth of the double-lumen bronchial intubation tube 100.

[0058] A specific embodiment of the double-lumen bronchial intubation tube 100 of the present invention will be described below with reference to the drawings.

[0059] As Figure 1 shown, the double-lumen bronchial intubation tube 100 according to an embodiment of the present invention includes: a connector 30, two intubation tubes 10, and an inflatable cuff 20.

[0060] The intubation tube 10 includes a main tube section 1, a branch tube section 2 provided at the head end of the main tube section 1 and communicating with the main tube section 1, a fixing section 3 provided at the head end of the branch tube section 2, and an external connecting tube section 4 provided at the tail end of the main tube section 1.

[0061] The external connecting tube section 4 can be connected to the breathing circuit through an existing connecting component. At least one of the external connecting tube sections 4 of the two intubation tubes 10 is provided with a first mark 41 on which words can be written. After the double-lumen bronchial intubation tube 100 is completely inserted into the intubation tube 10, by auscultation, it can be determined whether the two intubation tubes 10 are inserted into the left lung or the right lung respectively, and the left lung or the right lung into which the intubation tube 10 corresponding to the first mark 41 is inserted is written on the first mark 41, which is convenient for identifying the side during the operation.

[0062] The main tube sections 1 of the two intubation tubes 10 are arranged side by side and connected in a first direction. After the double-lumen bronchial intubation tube 100 is completely inserted into the trachea, the connected main tube sections 1 are inserted into the main trachea. The branch tube sections 2 of the two intubation tubes 10 form a bifurcation at the head of the main tube section 1 and are respectively inserted into the left bronchus and the right bronchus. The bifurcation point 400 of the two tracheas 10 cooperates with the carina 500 located between the two bronchi. That is, when the medical staff feels the resistance given by the carina 500 to the double-lumen bronchial intubation tube 100 during the insertion process, the information that the branch tube sections 2 of the two intubation tubes 10 of the double-lumen bronchial intubation tube 100 have been respectively inserted into the left bronchus and the right bronchus and the bifurcation point 400 of the two tracheas 10 cooperates with the carina 500 can be obtained. This position is the final position of the double-lumen bronchial intubation tube 100 and no further adjustment is required, reducing the operation difficulty and simplifying the clinical operation.

[0063] The tube openings 101 formed at the head ends of the two intubation tubes 10 are beveled openings. The tube openings 101 of the two intubation tubes 10 are arranged oppositely, and the tube opening 101 of one intubation tube 10 is opened on the side close to the other intubation tube 10. The two oppositely arranged and beveled tube openings 101 can guide the two intubation tubes 10 to the left bronchus and the right bronchus respectively when they come into contact with the carina 500 between the two lungs.

[0064] The setting of the fixed section 3 can increase the length of the intubation tube 10 inserted into the left bronchus and the right bronchus, ensuring that the two branch tube sections 2 can be stably inserted into the left bronchus and the right bronchus.

[0065] The fixed section 3 is formed into a tube shape, and ventilation openings 31 are opened on the tube walls on the sides of the fixed sections 3 of the two intubation tubes 10 that are far away from each other. The ventilation openings 31 are used to align with the opening of the right upper lobe bronchus. Referring to the commonly used size 37 double-lumen tube in current clinical practice, the distance L3 from the ventilation opening 31 to the main tube section 1 is 15 mm, and the distance to the cuff 20 is 5 mm, so as to improve the accuracy of aligning the ventilation opening 31 with the opening of the right upper lobe bronchus.

[0066] The connecting piece 30 is used to fix the two branch tube sections 2 and the fixed sections 3 of the two intubation tubes 10. The setting of the connecting piece 30 can arrange and connect the two branch tube sections 2 and the fixed sections 3 of the two intubation tubes 10 side by side, so as to reduce the difficulty of inserting the double-lumen bronchial intubation tube 100 into the glottis and avoid damaging the glottis during the insertion process.

[0067] The connecting piece 30 is formed into a thin fixing ring. The material of the fixing ring should be a high-molecular polymer material with good water solubility and good tissue compatibility, and has a certain toughness. It can dissolve quickly after coming into contact with tissues after being inserted. Before inserting into the glottis, the connecting piece 30 has not been dissolved yet. The connecting piece 30 can connect the two branch tube sections 2. After the two branch tube sections 2 are inserted into the glottis, as time goes by, the connecting piece 30 is dissolved, and the two branch tube sections 2 lose the connection of the connecting piece 30 and can be inserted into the left bronchus and the right bronchus respectively.

[0068] The double-lumen bronchial intubation tube 100 only includes one airbag, and the airbag wraps the two branch tube sections 2 and a part of the main tube section 1, so as to use one airbag to achieve the occlusion of the left bronchus and the right bronchus at the same time.

[0069] The cuff 20 includes a main body portion 201 and two branch portions 202 with interconnected inner cavities. The entire cuff 20 can be inflated and deflated together, conveniently achieving the occlusion of the gap between the double-lumen bronchial intubation 100 and the inner wall of the trachea or bronchus. The two branch portions 202 respectively surround the branch tube segments 2 of the two intubations 10 to occlude between the branch tube segments 2 and the inner wall of the bronchus, preventing air flow from passing through the gap between the branch tube segments 2 and the inner wall of the bronchus, which may cause abnormal control of the intrapulmonary pressure during the operation, and avoiding ventilation between the left and right lungs. The main body portion 201 surrounds the side of the connected main tube segment 1 near the head end to occlude between the outer surface of the connected main tube segment 1 and the inner wall of the main trachea, further occluding the gap and ensuring the stability of the overall setting of the airbag.

[0070] Referring to the commonly used No. 37 double-lumen tube in current clinical practice, the length L1 of the main tube segment 1 corresponding to the main body portion 201 of the cuff 20 is 20 mm, and the length H1 of the branch tube segment 2 corresponding to the side where the two branch portions 202 of the cuff 20 are away from each other is 10 mm.

[0071] The main tube segments 1 of the two intubations 10 together form the main trunk portion of the double-lumen bronchial intubation 100. A plurality of scale lines 111 that are spaced apart in the length direction of the main trunk portion and have different colors are provided on the wall of the main trunk portion. When medical staff cannot see or clearly see the data information marked on the scale lines 111, they can obtain the depth information at different scale positions through the more obvious color information, which is convenient for the operation of medical staff and the reading of data.

[0072] The scale lines 111 are arranged around the wall of the main trunk portion. Thus, no matter which direction the medical staff observes the depth of the intubation 10 of the double-lumen bronchial intubation 100, the medical staff can clearly see the scale lines 111 and use the scale lines 111 as a reference to judge the depth of the intubation 10 of the double-lumen bronchial intubation 100, improving the reliability and safety during the process of adjusting the depth of the double-lumen bronchial intubation 100.

[0073] The intubation process of the intubation 10 of the double-lumen bronchial intubation 100 of the present utility model will be described below with reference to the drawings.

[0074] In clinical applications, under a video laryngoscope, the double-lumen bronchial intubation tube 100 is inserted into the glottis, and the tube is advanced into the trachea. During the process of continuously advancing the tube after it is inserted into the glottis, the fixing ring dissolves due to water solubility, and the two branch tube segments 2 and the fixing segment 3 at the head end of the double-lumen bronchial intubation tube 100 are disconnected. When reaching the carina 500, the two orifices 101 formed by the head ends of the two intubation tubes 10, which are oppositely arranged and are beveled, come into contact with the carina 500 between the two lungs, and the two intubation tubes 10 are respectively guided into the left bronchus and the right bronchus. Among them, a part of one intubation tube 10 is inserted into the left bronchus, and a part of one intubation tube 10 is inserted into the right bronchus. At this time, when force is applied to the double-lumen bronchial intubation tube 100 again, the branch tube segments 2 of the two intubation tubes 10 will be respectively inserted into the left bronchus and the right bronchus under the guidance of the beveled orifices 101 formed by the head ends of the two intubation tubes 10.

[0075] The bifurcation point 400 of the two tracheas 10 comes into contact with the carina 500 of the human body. That is, when the medical staff feels the resistance given to the double-lumen bronchial intubation tube 100 due to the contact between the carina 500 and the bifurcation point 400 during the insertion process, it can be known that the branch tube segments 2 of the two intubation tubes 10 of the double-lumen bronchial intubation tube 100 have been respectively inserted into the left bronchus and the right bronchus, and the information that the bifurcation point 400 of the two tracheas 10 is in contact with the carina 500 is obtained. This position is the final position of the double-lumen bronchial intubation tube 100, and no further adjustment is required. The cuff 20 is inflated through the external inflation port 600 to seal the peritubular space and achieve isolation of the two lungs. By auscultation, it is determined which side of the left lung or the right lung the two intubation tubes 10 are respectively inserted into, and the side of the intubation tube 10 where the first mark 41 is located is written on the first mark 41 to facilitate identification of the side during the operation.

[0076] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0077] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A double-lumen bronchial intubation tube, characterized in that, Comprising: Two intubation tubes, each intubation tube including a main tube section and a branch tube section provided at the head end of the main tube section and communicating with the main tube section. The main tube sections of the two intubation tubes are arranged side by side and connected in the first direction, and the branch tube sections of the two intubation tubes form a bifurcation at the head of the double-lumen bronchial intubation tube. A cuff, the cuff including a main body portion with interconnected inner cavities and two branch portions. The main body portion surrounds one side of the connected main tube sections near the head end, and the two branch portions respectively surround the branch tube sections of the two intubation tubes.

2. The double-lumen bronchial intubation according to claim 1, wherein The lengths of the branch tube sections corresponding to the sides where the two branch portions of the cuff are close to each other are longer than the lengths of the branch tube sections corresponding to the sides where the branch portions are far from each other.

3. The double-lumen bronchial intubation according to claim 1, characterized in that, The orifices formed at the head ends of the two intubation tubes are beveled, and the orifices of the two intubation tubes are arranged oppositely. And / or, the head ends of the two intubation tubes are formed with guiding surfaces that extend obliquely from the middle of the two intubation tubes towards both sides in the direction close to the head end.

4. The double-lumen bronchial intubation according to claim 1, wherein, Further comprising: A connecting member, the connecting member being provided at the head end of the double-lumen bronchial intubation tube. The connecting member is used to fix the two branch tube sections so that the two branch tube sections are arranged side by side and connected, wherein the connecting member is detachable or dissolvable.

5. The double-lumen bronchial intubation according to claim 1, wherein, The intubation tube further includes: a fixing section, the fixing section being provided at the head end of the branch tube section.

6. The double-lumen bronchial intubation according to claim 5, characterized in that, The fixing section is formed as a porous frame structure or the fixing section is formed as a tubular structure with openings on the side portion communicating with the end orifice.

7. The double-lumen bronchial intubation according to claim 5, wherein, The fixing section is formed as a tube, and ventilation openings are provided on the tube walls on the sides where the fixing sections of the two intubation tubes are far from each other.

8. The double-lumen bronchial intubation tube according to claim 1, characterized in that, The intubation tube further includes an external connection tube section provided at the tail end of the main tube section. At least one of the external connection tube sections of the two intubation tubes is provided with a first mark around which words can be written.

9. The double-lumen bronchial intubation according to claim 1, characterized in that The main tube sections of the two intubation tubes together form the main trunk portion of the double-lumen bronchial intubation tube. A plurality of scale lines spaced apart in the length direction of the main trunk portion and having different colors are provided on the tube wall of the main trunk portion, and the scale lines are arranged around the tube wall of the main trunk portion.

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