Double-lumen endotracheal tube specifically designed for occluding the right bronchus

Abstract

This utility model relates to a dual-lumen endotracheal tube specifically designed for occluding the right bronchus, comprising a main ventilation tube, an occlusion branch tube, an isolation occlusion cuff, and a ventilation occlusion cuff. The main ventilation tube and the occlusion branch tube are adjacent and parallel, forming a single integrated structure. The isolation occlusion cuff is mounted on the occlusion branch tube, and the ventilation occlusion cuff is mounted on the main ventilation tube. The isolation occlusion cuff comprises two independent cuffs: a spherical cuff and a long, narrow cuff, with the long, narrow cuff located proximal to the spherical cuff. After inflation, the spherical cuff covers the outside of the occlusion branch tube, and the long, narrow cuff, after inflation, partially covers the outside of the occlusion branch tube, partially covering the main ventilation tube, leaving the main outlet of the main ventilation tube exposed. The inflated long, narrow cuff is adjacent to the inflated spherical cuff. This utility model solves the problem that existing dual-lumen endotracheal tubes cannot effectively isolate and occlude the right main bronchus due to the unique characteristics of the human body's natural cavities.

Description

Technical Field

[0001] This utility model relates to a double-lumen endotracheal catheter, and more particularly to a double-lumen endotracheal catheter specifically used for blocking the right bronchus, belonging to the field of medical device technology. Background Technology

[0002] In thoracic surgery, lung isolation is often required to separate the affected lung from the healthy lung, block the main bronchus on the affected side, and implement one-lung ventilation on the healthy side while unilateral occlusion. Occlusion serves two purposes: firstly, it relatively fixes the anatomical position of the affected lung, creating good fixation conditions for surgery and facilitating surgical procedures; secondly, it prevents blood and secretions from the affected side from entering the healthy lung, causing unnecessary infection on the healthy side and affecting the surgical outcome. Currently, double-lumen catheters are used for occlusion.

[0003] A double-lumen endobronchial tube (also known clinically as a double-lumen bronchial tube, or DLT) is a special endotracheal intubation device that isolates the left and right main bronchi to achieve "one-lung ventilation." It is one of the core instruments in modern thoracic surgery and critical care airway management.

[0004] Therefore, existing double-lumen catheters are generally fine when used for "left-sided occlusion" because the body's natural cavities are unique, especially the right side of the lungs, which has many bronchial branches. The upper part of the right main bronchus has upper bronchial branches, and the distance from the tracheal bifurcation varies, which can affect the occlusion effect.

[0005] See details Figure 1 The main bronchi are located on either side of the trachea in the human body. The left main bronchus is generally longer than the right main bronchus. Therefore, when using a double-lumen intubation catheter to block the right main bronchus, the supporting structures (such as...) will be limited. Figure 1 The "isolation and sealing position" in the text is too short, resulting in incomplete sealing. Figure 1 The "right upper lobe bronchus" in the lungs often leaks and cannot be completely sealed off. Utility Model Content

[0006] The purpose of this invention is to provide a double-lumen intubation catheter specifically designed for blocking the right bronchus. The bronchial balloon is specially designed with a unique shape to enable it to effectively block the root of the right bronchus, thereby improving the effectiveness of thoracic surgery.

[0007] The present invention adopts the following technical solution:

[0008] A dual-lumen endotracheal tube specifically designed for occluding the right bronchus includes a main ventilation tube, an occlusion branch tube, an isolation occlusion cuff 1, and a ventilation occlusion cuff 2. The main ventilation tube and the occlusion branch tube are adjacent to each other and are an integral structure. The isolation occlusion cuff 1 is disposed on the occlusion branch tube, and the ventilation occlusion cuff 2 is disposed on the main ventilation tube. The isolation occlusion cuff 1 includes two independent cuffs: a spherical cuff 101 and a long strip cuff 102. The long strip cuff 102 is located proximal to the spherical cuff 101. After inflation, the spherical cuff 101 covers the outside of the occlusion branch tube, and after inflation, the long strip cuff 102 partially covers the outside of the occlusion branch tube, partially covering the main ventilation tube, and exposing the main outlet end 4 of the main ventilation tube. The inflated long strip cuff 102 is adjacent to the inflated spherical cuff 101.

[0009] Preferably, the main air outlet 4 has a slanted cut to increase the area of ​​the air outlet 4 and to make the air outlet direction opposite to the elongated airbag 102.

[0010] Preferably, the proximal end of the inflated elongated airbag 102 is close to the inflated ventilation and sealing airbag 2, but the two do not interfere with each other.

[0011] Furthermore, after inflation, the ventilation and sealing airbag 2 is shaped like an ellipsoid with both ends contracting inwards, and the proximal end of the elongated airbag 102 after inflation is a flat surface. After the ventilation and sealing airbag 2 contracts inwards, it avoids the flat surface.

[0012] Preferably, it also includes an isolation inflation valve 7 and a venting inflation valve 8; the isolation inflation valve 7 is connected to the isolation sealing airbag 1 through a gas pipeline embedded in the outer wall of the sealing branch pipe, the gas pipeline leads to an opening on the side wall of the elongated airbag 102, and the end leads to the spherical airbag 101; the venting inflation valve 8 is connected to the venting sealing airbag 2 through a pipeline embedded in the outer wall of the venting main pipe; the isolation inflation valve 7 and the venting inflation valve 8 are each connected to an external pressure gas source.

[0013] Furthermore, it also includes an isolation air inlet connector 5 and a ventilation air inlet connector 6; the isolation air inlet connector 5 is connected to the blocking branch pipe, and the ventilation air inlet connector 6 is connected to the ventilation main pipe; the isolation air inlet connector 5 and the ventilation air inlet connector 6 are used to connect to the ventilator.

[0014] Preferably, the main ventilation pipe and the blocking branch pipe are made of medical-grade polyvinyl chloride, and the isolation blocking airbag 1 and the ventilation blocking airbag 2 are made of medical-grade polyvinyl chloride or silicone.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1) It solves the problem that the existing double-lumen intubation catheter cannot effectively isolate and block the right main bronchus due to the uniqueness of the human body's natural cavities (right main bronchus);

[0017] 2) The long strip-shaped airbag is designed with a semi-enclosed structure, which can block the inner wall of the right main bronchus on the right side, while exposing the bifurcation part of the trachea to facilitate normal ventilation of the main air outlet 4. The design is ingenious and has a high safety margin. Attached Figure Description

[0018] Figure 1 It is a schematic diagram of the location of the human trachea and bronchi; the diagram mainly shows the situation where the length of the right main bronchus is significantly shorter than that of the left main bronchus, as well as the location of isolation blockage and ventilation blockage in existing technologies.

[0019] Figure 2 This is a schematic diagram of the overall structure of the double-lumen endotracheal tube specifically designed for blocking the right bronchus. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the overall structure of the double-lumen endotracheal tube specifically designed for blocking the right bronchus. Figure 2 .

[0021] Figure 4 This is a schematic diagram of the overall structure of the double-lumen endotracheal tube specifically designed for blocking the right bronchus. Figure 3 .

[0022] Figure 5 yes Figure 4 A magnified view of the upper section.

[0023] Figure 6 This is a schematic diagram showing the specific location of the elongated airbag 102 in the human trachea according to this utility model.

[0024] In the diagram, 1. Isolation and sealing airbag, 2. Ventilation and sealing airbag, 3. Outlet air end, 4. Main outlet air end, 5. Isolation air inlet connector, 6. Ventilation air inlet connector, 7. Isolation inflation valve, 8. Ventilation inflation valve; 101. Spherical airbag, 102. Long strip airbag. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] The terms "proximal" and "distal" used in this article are based on the relative orientation and position of the various components and elements of a medical device. Although not restrictive, "proximal" generally refers to the end of the medical device that is closer to the surgeon during normal use, while "distal" generally refers to the end of the medical device that is farther from the surgeon. Figure 2 and Figure 3 The left side is the distal end, and the right side is the proximal end.

[0027] See Figure 1 , Figure 1 This diagram illustrates the distribution of the trachea and bronchi in the human body. Because it is a frontal view, the "left side" in the diagram actually refers to the "right side" of the body (viewed from the back). As can be seen in the diagram, the right main bronchus, located downwards at the bifurcation of the trachea, is significantly shorter than the left main bronchus.

[0028] Therefore, when isolating and occluding the right main bronchus (during surgery, breathing relies solely on the left main bronchus), inadequate isolation often occurs, for example... Figure 1 Insufficient negative pressure during vacuuming may occur at the "left upper lobe bronchus". Therefore, this utility model aims to solve this problem.

[0029] See Figure 2 , Figure 2 The figure shows the overall structure of a double-lumen endotracheal tube specifically for blocking the right bronchus in one embodiment of the present invention. The structure of the right side is basically the same as that of the prior art, and the key change is in the structure of the left side.

[0030] See Figure 2-5 A dual-lumen endotracheal tube specifically designed for occluding the right bronchus, comprising a main ventilation tube, an occlusion branch tube, an isolation occlusion cuff 1, and a ventilation occlusion cuff 2; the main ventilation tube and the occlusion branch tube are adjacent and parallel, forming a single unit, but bifurcating at the proximal end, such as... Figure 2 and 3 After the branching, one path connects to the isolation air intake connector 5, and the other path connects to the ventilation air intake connector 6.

[0031] Referring to 2-5, the isolation and sealing airbag 1 is installed on the sealing branch pipe, and the ventilation and sealing airbag 2 is installed on the ventilation main pipe; the isolation and sealing airbag 1 includes two independent airbags: a spherical airbag 101 and a long strip airbag 102, with the long strip airbag 102 located near the proximal end of the spherical airbag 101; after inflation, the spherical airbag 101 covers the outside of the sealing branch pipe, and after inflation, the long strip airbag 102 partially covers the outside of the sealing branch pipe, partially covering the ventilation main pipe, and leaving the main air outlet 4 of the ventilation main pipe exposed. (See attached...) Figure 6 When the elongated airbag 102 blocks the portion of the tracheal bifurcation near the right main bronchus, it works in conjunction with the spherical airbag 101 (the "isolation and occlusion position" in the figure) to achieve the function of blocking the right main bronchus, and then combined with the attached... Figure 2 and 5 It can be seen that this blockage does not affect the normal respiratory function of the four pairs of left main bronchi at the main outlet.

[0032] It should be noted that the term "semi-coverage" mentioned here does not specifically refer to covering exactly half of the surface, but should be understood as "not fully covered." For example, it could be covering 30% or 70%. The term "spherical airbag 101" in the text does not specifically refer to a standard "spherical" shape, but rather to a shape that is roughly "spherical."

[0033] like Figure 5 As shown, the inflated elongated airbag 102 is close to the inflated spherical airbag 101, thereby improving the sealing effect.

[0034] See Figure 5 The main air outlet 4 has a beveled cut to increase the area of ​​the air outlet 4 and to make the air outlet direction opposite to the elongated airbag 102. Its installation position and function can be combined with the attached... Figure 6 Let's try to understand it.

[0035] See also Figure 5 The proximal end of the inflated elongated airbag 102 is close to the inflated ventilation and sealing airbag 2, but the two do not interfere with each other.

[0036] Specifically, the ventilation-sealing airbag 2, after inflation, takes on a near-ellipsoidal shape with both ends contracting inwards. The proximal end of the elongated airbag 102, after inflation, is a flat surface. The inward contraction of the two ends of the ventilation-sealing airbag 2 precisely avoids this flat surface. Figure 5 As shown.

[0037] See Figure 2 It also includes an isolation inflation valve 7 and a venting inflation valve 8; the isolation inflation valve 7 is connected to the isolation sealing airbag 1 through a gas pipeline embedded in the outer wall of the sealing branch pipe.

[0038] Specifically, the gas pipeline leads to an opening on the side wall of the elongated airbag 102, and its end leads to the spherical airbag 101. Thus, only one gas source is needed to simultaneously realize the inflation function of the spherical airbag 101 and the elongated airbag 102. The attached figure shows the ventilation structure in detail, but it is understandable.

[0039] See Figure 2 The venting and inflation valve 8 is connected to the venting and sealing airbag 2 via a pipe embedded in the outer wall of the venting main pipe; the isolation inflation valve 7 and the venting and inflation valve 8 are each connected to an external pressure gas source. This structure is the same as that in the prior art.

[0040] See also Figure 2 It also includes an isolation air inlet connector 5 and a ventilation air inlet connector 6; the isolation air inlet connector 5 is connected to the blocking branch pipe, and the ventilation air inlet connector 6 is connected to the ventilation main pipe; the isolation air inlet connector 5 and the ventilation air inlet connector 6 are used to connect to the ventilator, and this structure is the same as that of the prior art.

[0041] In this embodiment, the main ventilation pipe and the blocking branch pipe are made of medical-grade polyvinyl chloride, and the isolation blocking airbag 1 and the ventilation blocking airbag 2 are made of medical-grade polyvinyl chloride or silicone.

[0042] The above are preferred embodiments of the present utility model. Those skilled in the art can make various changes or improvements based on this. Without departing from the overall concept of the present utility model, these changes or improvements should all fall within the scope of protection claimed by the present utility model.

Claims

1. A double-lumen endotracheal tube specifically for occluding the right bronchus, comprising a main ventilation tube, an occlusion branch tube, an isolation occlusion cuff (1), and a ventilation occlusion cuff (2); wherein the main ventilation tube and the occlusion branch tube are adjacent to each other and are integrally formed; the isolation occlusion cuff (1) is disposed on the occlusion branch tube, and the ventilation occlusion cuff (2) is disposed on the main ventilation tube, characterized in that: The isolation and occlusion airbag (1) includes two independent airbags: a spherical airbag (101) and a long strip airbag (102), with the long strip airbag (102) located at the proximal end of the spherical airbag (101). After being inflated, the spherical airbag (101) covers the outside of the blocking branch pipe, and after being inflated, the long strip airbag (102) partially covers the outside of the blocking branch pipe, partially covers the main ventilation pipe, and exposes the main air outlet (4) of the main ventilation pipe. The inflated elongated airbag (102) is adjacent to the inflated spherical airbag (101).

2. The dual lumen cannula catheter of claim 1, wherein: The main air outlet (4) has a slanted cut to increase the area of ​​the air outlet (4) and to make the air outlet direction opposite to the elongated airbag (102).

3. The dual lumen cannula catheter of claim 1, wherein: The proximal end of the inflated elongated airbag (102) is adjacent to the inflated ventilation and sealing airbag (2), but the two do not interfere with each other.

4. The dual lumen cannula catheter of claim 3, wherein: The ventilation and sealing airbag (2) is inflated into an ellipsoidal shape with both ends contracting inward. The proximal end of the elongated airbag (102) after inflation is a flat surface. The ventilation and sealing airbag (2) avoids the flat surface after both ends contract inward.

5. The dual-lumen catheter as described in claim 1, characterized in that: It also includes an isolation inflation valve (7) and a venting inflation valve (8); The isolation inflation valve (7) is connected to the isolation sealing airbag (1) through a gas pipeline embedded in the outer wall of the sealing branch pipe. The gas pipeline leads to an opening on the side wall of the long strip airbag (102) and its end leads to the spherical airbag (101). The ventilation and inflation valve (8) is connected to the ventilation and sealing airbag (2) through a pipe embedded in the outer wall of the ventilation main pipe; The isolation inflation valve (7) and the venting inflation valve (8) are each connected to an external pressure gas source.

6. The dual-lumen catheter as described in claim 5, characterized in that: It also includes an isolation air inlet connector (5) and a ventilation air inlet connector (6); The isolation air inlet connector (5) is connected to the blocking branch pipe, and the ventilation air inlet connector (6) is connected to the ventilation main pipe; The isolation air inlet connector (5) and the ventilation air inlet connector (6) are used to connect to the ventilator.

7. The dual lumen cannula catheter of claim 1, wherein: The main ventilation pipe and the blocking branch pipe are made of medical-grade polyvinyl chloride, and the isolation blocking airbag (1) and the ventilation blocking airbag (2) are made of medical-grade polyvinyl chloride or silicone.

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