Double-lumen intubation catheter special for blocking right bronchial tube
By designing the double-lumen intubation catheter with a spherical and elongated balloon, the problem of incomplete occlusion of the right bronchus was solved, effective occlusion of the right bronchus was achieved, and the surgical effect was improved.
Patent Information
- Application Number
- CN202511107589.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-09-23
AI Technical Summary
The existing double-lumen intubation catheter is not effective in blocking the right bronchus and cannot completely block the right upper lobe bronchus, resulting in leakage.
A double-lumen intubation catheter specifically for blocking the right bronchus was designed. It adopts a spherical and long-shaped airbag design. The spherical airbag covers the outside of the blocking branch, and the long airbag semi-covers the ventilation main pipe. Combined with the oblique incision at the main air outlet end, effective blocking of the right bronchus is achieved.
It achieved effective occlusion of the right bronchus, avoided leakage, ensured the isolation of the affected lung during the operation, prevented blood and secretions from entering the healthy lung, and improved the surgical effect.
Smart Images
Figure CN120679054A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a double-lumen intubation catheter, in particular to a double-lumen intubation catheter specially used for blocking the right bronchus, and belongs to the technical field of medical devices. Background Art
[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, implement single-lung ventilation on the healthy side and block the healthy side at the same time. On the one hand, the blockage can relatively fix the anatomical position of the affected lung, create good fixation conditions for surgery, and facilitate surgical operations. On the other hand, it can also prevent blood and secretions from the affected side from entering the healthy lung, causing unnecessary infection on the healthy side and affecting the surgical effect. Double-lumen intubation catheters are now used for blockage.
[0003] The double-lumen endobronchial tube (DLT) is a special endotracheal intubation device that isolates the left and right main bronchi and achieves "single-lung ventilation". It is one of the core instruments in modern thoracic surgery and critical airway management.
[0004] Therefore, the existing double-lumen intubation catheter is generally suitable for "left-side occlusion" because the natural cavities of the human body are unique, especially the right side of the lung has many bronchial branches, and there are upper bronchial branches out of the middle and upper part of the right main bronchus, and the distance from the tracheal bifurcation varies, which will affect the occlusion effect.
[0005] See Figure 1 The human body has two main bronchi located on the left and right sides of the trachea. The left main bronchi are generally longer than the right main bronchi. Therefore, when a double-lumen intubation catheter is used to block the right main bronchi, the supportive parts (such as Figure 1 The "isolation and blocking position" in the diagram is too short, resulting in inadequate blocking. Figure 1 The "right upper lobe bronchus" in the lung often leaks and cannot be completely blocked. Summary of the Invention
[0006] The purpose of the present invention is to provide a double-lumen intubation catheter specifically for blocking the right bronchus, and the special design of the bronchial balloon is made into an irregular shape, so that it can effectively block the root of the right bronchus, thereby improving the effect of lung and thoracic surgery.
[0007] The present invention adopts the following technical solutions:
[0008] A double-lumen intubation catheter specially used for blocking the right bronchus, comprising a ventilation main pipe, a blocking branch pipe, an isolation blocking airbag 1 and a ventilation blocking airbag 2; the ventilation main pipe and the blocking branch pipe are adjacent to each other and are parallel and are an integrated structure; the isolation blocking airbag 1 is arranged on the blocking branch pipe, and the ventilation blocking airbag 2 is arranged on the ventilation main pipe; the isolation blocking airbag 1 comprises two independent airbags, a spherical airbag 101 and a long strip airbag 102, and the long strip airbag 102 is located at the proximal end of the spherical airbag 101; after inflation, the spherical airbag 101 covers the outside of the blocking branch pipe, and after inflation, the long strip airbag 102 half covers the outside of the blocking branch pipe, partially covers the ventilation main pipe, and makes the main air outlet end 4 of the ventilation main pipe exposed to the outside; the inflated long strip airbag 102 is adjacent to the inflated spherical airbag 101.
[0009] Preferably, the main air outlet end 4 has an oblique cut, which is used to increase the area of the air outlet end 4 and make the air outlet direction away from the elongated airbag 102.
[0010] Preferably, the proximal end of the inflated elongated airbag 102 is adjacent to the inflated ventilation and blocking airbag 2 , but the two do not interfere with each other.
[0011] Furthermore, the ventilation and sealing airbag 2 is ellipsoidal in shape with both ends contracted inward after being inflated, and the proximal end of the elongated airbag 102 is a flat surface after being inflated. The ventilation and sealing airbag 2 just avoids the flat surface after both ends contract inward.
[0012] Preferably, it also includes an isolation inflation valve 7 and a ventilation inflation valve 8; the isolation inflation valve 7 is connected to the isolation sealing airbag 1 through a gas pipeline buried in the outer wall of the sealing branch pipe, and the gas pipeline leads to the opening on the side wall of the elongated airbag 102, and the end leads to the spherical airbag 101; the ventilation inflation valve 8 is connected to the ventilation sealing airbag 2 through a pipeline buried in the outer wall of the ventilation main pipe; the isolation inflation valve 7 and the ventilation inflation valve 8 are each externally connected to a 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 ventilation main 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 the present invention are:
[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 cavity (right main bronchus);
[0017] 2) The long strip airbag is designed as a semi-enclosed structure, which can block the inner wall side close to the right main bronchus and expose the tracheal bifurcation to facilitate normal ventilation of the main air outlet 4. The design is ingenious and has a high safety margin. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the positions of the human trachea and bronchi; the figure mainly shows that the length of the right main bronchus is significantly shorter than the left main bronchus, as well as the positions of the isolation blockage and ventilation blockage implemented in the prior art.
[0019] Figure 2 This is a schematic diagram of the overall structure of the double-lumen intubation catheter specially used for blocking the right bronchus of the present invention. Figure 1 .
[0020] Figure 3 This is a schematic diagram of the overall structure of the double-lumen intubation catheter specially used for blocking the right bronchus of the present invention. Figure 2 .
[0021] Figure 4 This is a schematic diagram of the overall structure of the double-lumen intubation catheter specially used for blocking the right bronchus of the present invention. Figure 3 .
[0022] Figure 5 yes Figure 4 A partial enlargement of the upper part.
[0023] Figure 6 It is a schematic diagram of the specific position of the long strip airbag 102 in the human trachea of the present invention.
[0024] In the figure, 1. Isolation and sealing airbag, 2. Ventilation and sealing airbag, 3. Exhaust end, 4. Main outlet end, 5. Isolation air inlet connector, 6. Ventilation air inlet connector, 7. Isolation inflation valve, 8. Ventilation inflation valve; 101. Spherical airbag, 102. Rectangular airbag. DETAILED DESCRIPTION
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0026] The terms "proximal end" and "distal end" used herein are described based on the relative orientation and relative position of the various components and elements of the medical device. Although not restrictive, the "proximal end" generally refers to the end of the medical device that is closer to the operator during normal use, and the "distal end" generally refers to the end of the medical device that is away from the operator, such as Figure 2 and Figure 3, the left side is the distal end and the right side is the proximal end.
[0027] See also Figure 1 , Figure 1 This diagram shows the distribution of the human trachea and bronchi. Because it's a frontal view, the "left side" in the diagram is actually the "right side" of the body (as seen from the back). The diagram shows that the right main bronchus, located downward from the tracheal bifurcation, is significantly shorter than the left main bronchus.
[0028] For this reason, when isolating and blocking the right main bronchus (relying only on the left main bronchus for breathing during surgery), inadequate isolation often occurs, for example Figure 1 Insufficient vacuum pressure may occur at the "left upper lobe bronchus" in the lung. Therefore, the present invention aims to solve this problem.
[0029] See also Figure 2 , Figure 2 The overall structure of a double-lumen intubation catheter specifically used for blocking the right bronchus in one embodiment of the present invention is shown. The structure of the right part in the figure is basically the same as that of the prior art, and the key change lies in the structure of the left part.
[0030] See also Figure 2-5 A double-lumen intubation catheter specially used for blocking the right bronchus, comprising a ventilation main tube, a blocking branch, an isolation blocking airbag 1, and a ventilation blocking airbag 2; the ventilation main tube and the blocking branch are adjacent and parallel and are an integrated structure, but have a bifurcation at the proximal end, such as Figure 2 and 3 After bifurcation, one of the paths is connected to the isolation air inlet connector 5, and the other is connected to the ventilation air inlet connector 6.
[0031] Refer to 2-5, the isolation and blocking airbag 1 is set on the blocking branch pipe, and the ventilation and blocking airbag 2 is set on the ventilation main pipe; the isolation and blocking airbag 1 includes two independent airbags, a spherical airbag 101 and a long airbag 102, and the long airbag 102 is located at the proximal end of the spherical airbag 101; the spherical airbag 101 is covered on the outside of the blocking branch pipe after inflation, and the long airbag 102 is half covered on the outside of the blocking branch pipe after inflation, partially covering the ventilation main pipe, and making the main air outlet end 4 of the ventilation main pipe exposed to the outside. Figure 6 When the long strip airbag 102 blocks the part of the tracheal bifurcation near the right main bronchus, it cooperates with the spherical airbag 101 (the "isolation and blocking position" in the figure) to achieve the blocking function of 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 brought by the main air outlet 4 to the left main bronchus.
[0032] It should be noted that the term "half-enclosed" does not refer to "enclosed half" but should be understood as "partially enclosed," e.g., 30% or 70% enclosed. The term "spherical airbag 101" does not refer to a standard "spherical shape," but rather to a generally "spherical shape."
[0033] like Figure 5 As shown, the inflated elongated airbag 102 is adjacent to the inflated spherical airbag 101, thereby improving the blocking effect.
[0034] See also Figure 5 The main outlet end 4 has an oblique cut for increasing the area of the outlet end 4 and making the outlet direction away from the long strip airbag 102. Its installation position and function can be combined with the attached Figure 6 To understand.
[0035] Continue to see Figure 5 The proximal end of the inflated elongated airbag 102 is adjacent to the inflated ventilation and blocking airbag 2, but the two do not interfere with each other.
[0036] Specifically, the ventilation and sealing airbag 2 is inflated to form an ellipsoidal shape with both ends contracted inwards. The proximal end of the elongated airbag 102 is a flat surface after inflation. The ventilation and sealing airbag 2 is just avoided by contracting both ends inwards. Figure 5 shown.
[0037] See also Figure 2 , further comprising an isolation inflation valve 7 and a ventilation inflation valve 8; the isolation inflation valve 7 is connected to the isolation and blocking airbag 1 through a gas pipeline buried in the outer wall of the blocking branch pipe;
[0038] Specifically, the gas pipeline leads to the opening on the side wall of the elongated airbag 102, and the end leads to the spherical airbag 101, so that 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 specifically shows the ventilation structure, but it is understandable.
[0039] See also Figure 2 The ventilation and inflating valve 8 is connected to the ventilation and blocking airbag 2 through a pipeline embedded in the outer wall of the ventilation main pipe; the isolation and inflating valve 7 and the ventilation and inflating valve 8 are each connected to an external pressure gas source. This structure is the same as that of the prior art.
[0040] Continue to see Figure 2 , and 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 also the same as the prior art.
[0041] In this embodiment, the ventilation main 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 invention. Those skilled in the art may make various changes or improvements based on the above. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.
Claims
1. A double-lumen intubation catheter specially used for blocking the right bronchus, comprising a ventilation main tube, a blocking branch tube, an isolation blocking airbag (1), and a ventilation blocking airbag (2); the ventilation main tube and the blocking branch tube are adjacent to each other and are parallel and form an integrated structure; the isolation blocking airbag (1) is arranged on the blocking branch tube, and the ventilation blocking airbag (2) is arranged on the ventilation main tube, characterized in that: The isolation and blocking airbag (1) comprises two independent airbags, a spherical airbag (101) and a long strip airbag (102), wherein the long strip airbag (102) is located at the proximal end of the spherical airbag (101); The spherical airbag (101) is inflated to cover the outside of the blocking branch pipe, and the long strip airbag (102) is inflated to half cover the outside of the blocking branch pipe, partially covering the ventilation main pipe, and allowing the main air outlet end (4) of the ventilation main pipe to be exposed. The inflated elongated airbag (102) is adjacent to the inflated spherical airbag (101).
2. The double-lumen intubation catheter according to claim 1, wherein: The main air outlet end (4) has an oblique cut, which is used to increase the area of the air outlet end (4) and make the air outlet direction turn away from the long strip air bag (102).
3. The double-lumen intubation catheter according to claim 1, wherein: The proximal end of the inflated elongated airbag (102) is adjacent to the inflated ventilation and blocking airbag (2), but the two do not interfere with each other.
4. The double-lumen intubation catheter according to claim 3, wherein: The ventilation and sealing airbag (2) is inflated into an ellipsoidal shape with both ends contracted inwards. The proximal end of the long strip airbag (102) is a flat surface after inflation. The ventilation and sealing airbag (2) contracts inwards to avoid the flat surface.
5. The double-lumen intubation catheter according to claim 1, wherein: It also includes an isolation inflation valve (7) and a ventilation inflation valve (8); The isolation inflation valve (7) is connected to the isolation and blocking airbag (1) through a gas pipeline buried in the outer wall of the blocking branch pipe, and the gas pipeline leads to the opening on the side wall of the elongated airbag (102), and the end leads to the spherical airbag (101); The ventilation and inflating valve (8) is connected to the ventilation and sealing airbag (2) via a pipeline embedded in the outer wall of the ventilation main pipe; The isolation inflation valve (7) and the ventilation inflation valve (8) are each externally connected to a pressure gas source.
6. The double-lumen intubation catheter according to claim 5, characterized in that: It also includes an isolation air intake connector (5) and a ventilation air intake connector (6); The isolation air inlet joint (5) is in communication with the blocking branch pipe, and the ventilation air inlet joint (6) is in communication with the ventilation main pipe; The isolation air inlet connector (5) and the ventilation air inlet connector (6) are used for connection to a ventilator.
7. The double-lumen intubation catheter according to claim 1, wherein: The ventilation main 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.