Right double-lumen bronchial cannula with movable side hole
By designing a right double-lumen endotracheal tube with movable side holes, the problem of improper positioning of the right main bronchus was solved, enabling precise lung isolation and ventilation, reducing ventilation dead space and the risk of complications, and improving oxygenation efficiency.
Patent Information
- Application Number
- CN202520226400.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Due to individual differences in the structure of the human airway, especially the relatively shorter and straighter right main bronchus, it is difficult to correctly place the right double-lumen endotracheal tube, which is prone to improper placement and ventilation difficulties, such as mistakenly entering the right upper lobe bronchus or misaligning the side holes with the right upper lobe opening. Current technology is not able to achieve precise lung isolation and ventilation.
A movable side-hole right double-lumen endotracheal cannula was designed. By setting a connecting channel and a moving mechanism inside the secondary bronchus, including an outer slip ring, an inner slip ring, a guidewire, and a locking assembly, the position of the side hole can be flexibly adjusted, ensuring that the catheter is accurately aligned with the opening of the right upper lobe when it is not completely withdrawn, reducing ventilation dead space and improving oxygenation efficiency.
It enables precise adjustment of the side hole position without adjusting the catheter, reducing ventilation dead space, improving oxygenation efficiency, avoiding the risks of trauma and complications caused by repeated movements, such as airway damage, bleeding or infection, and ensuring optimal ventilation and isolation.
Smart Images
Figure CN223817990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a right double-lumen endotracheal tube with movable side holes. Background Technology
[0002] A right double-lumen endotracheal tube (RDLT) is a special type of endotracheal tube specifically designed for thoracic surgery. It is primarily used for one-lung ventilation, meaning that during left-sided thoracic surgery, the left lung is collapsed to provide a clear surgical field while maintaining ventilation of the right lung. With the increasing prevalence of minimally invasive surgical techniques such as video-assisted thoracoscopic surgery (VATS), one-lung ventilation has become essential. RDLT effectively achieves this goal, meeting the clinical need for precise respiratory management. Proper placement of the RDLT requires a high level of expertise and experience, including accurately determining the tube's position and using fiberoptic bronchoscopy to confirm that the tube tip is in the correct bronchial branch. Furthermore, it is necessary to know how to adjust the tube to ensure optimal lung isolation.
[0003] Due to individual differences in airway structure, especially the relatively shorter and straighter right main bronchus, proper placement of the right RDLT becomes more difficult. Compared to left double-lumen endotracheal intubation, RDLT is more prone to misposition, leading to ventilation difficulties, such as accidental insertion into the right upper lobe bronchus or misalignment of the side hole with the right upper lobe opening. Therefore, this application proposes a right double-lumen endotracheal intubation device with a movable side hole. Utility Model Content
[0004] Therefore, it is necessary to address the aforementioned technical issues by providing a right double-lumen endotracheal tube with movable side holes. Through the overall structural design, in the event of improper positioning, the movable design of the ventilation port allows the physician to adjust the position of the side holes without completely withdrawing the catheter. This enables more precise alignment with the opening of the right upper lobe, allowing for the customization of the most suitable ventilation mode for each patient, minimizing ventilation dead space, improving oxygenation efficiency, and effectively avoiding the additional trauma and complications associated with repeated catheter movements, such as airway injury, bleeding, or infection.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A movable side-hole right double-lumen endotracheal tube for use in thoracic surgery;
[0007] It includes a main branch pipe and a secondary branch pipe. A first set of bladders is provided at the lower end between the main branch pipe and the secondary branch pipe. A second set of bladders is provided at the lower end of the secondary branch pipe and below the first set of bladders. A connecting channel is provided inside the secondary branch pipe. A side hole assembly is provided at the lower end of the connecting channel. A moving mechanism is provided at the upper end of the connecting channel.
[0008] The side hole assembly includes an elastic support. The lower end of the secondary branch pipe is fixed with an elastic support. The elastic support has a side hole inside, which is connected to the connecting channel.
[0009] The moving mechanism includes an outer slip ring. An outer slip ring is sleeved on the outer side of the upper end of the secondary branch pipe. The outer slip ring is slidably connected to the secondary branch pipe. A buckle assembly is provided between the outer side of the outer slip ring and the secondary branch pipe.
[0010] As a preferred embodiment of the movable side-hole right double-lumen endotracheal cannula provided by this utility model, the moving mechanism further includes an inner slip ring, a connecting piece, and a guide wire. An inner slip ring is provided on the inner side of the upper end of the connecting channel. A connecting piece is fixed between the outer side of the inner slip ring and the inner side of the outer slip ring. The connecting piece is slidably connected to the secondary branch tube. A guide wire is provided on the inner side of the connecting channel.
[0011] As a preferred embodiment of the movable side hole right double-lumen endotracheal cannula provided by this utility model, the upper end of the guidewire is fixed to the inner wall of the inner slip ring, and the lower end of the guidewire is fixed with a vent tube. The vent tube is located between the inner side of the connecting channel and the inner side of the side hole, and the outer side of the vent tube is respectively attached to the inner side of the connecting channel and the inner side of the side hole.
[0012] As a preferred embodiment of the movable side hole right double-lumen endotracheal tube provided by this utility model, a positioning guide rail is symmetrically fixed on the outer side of the upper end of the secondary branch tube.
[0013] As a preferred embodiment of the movable side-hole right double-lumen endotracheal tube provided by this utility model, the buckling assembly includes a limiting seat. A limiting seat is provided on the outer side of the outer slip ring and on the outer side of the two positioning guide rails. The two limiting seats are slidably connected to the two positioning guide rails respectively. An anti-dislodgement guide post is symmetrically fixed on the inner side of each limiting seat. The anti-dislodgement guide post is located inside the outer slip ring and is slidably connected to the outer slip ring.
[0014] As a preferred embodiment of the movable side hole right double-lumen endotracheal cannula provided by this utility model, a spring is sleeved on the outer side of each of the anti-dislodgement guide posts and located outside the outer slip ring, and the two ends of the spring are respectively fixed to the outer slip ring and the limiting seat.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The movable side-hole right double-lumen endotracheal tube provided by this utility model, through the overall structural design, allows the doctor to adjust the position of the side hole without completely withdrawing the main tube when the position is incorrect, without having to adjust the main tube. This allows for more precise alignment with the opening of the right upper lobe of the lung, enabling the customization of the most suitable ventilation mode for each patient, minimizing dead space, and improving oxygenation efficiency.
[0017] Furthermore, it effectively avoids the additional trauma and complications caused by repeated movement of the catheter, such as airway damage, bleeding, or infection. At the same time, it helps to find the optimal ventilation path to achieve ideal ventilation and isolation effects, effectively avoids surgical difficulties caused by poor lung collapse, ventilation fluctuations, etc., reduces the risk of accidental damage to surrounding tissues and organs, and thus reduces the burden of postoperative recovery for patients. Attached Figure Description
[0018] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the overall structure of the right double-lumen endotracheal cannula with movable side holes provided by this utility model;
[0020] Figure 2 A schematic diagram of the upper end of the right double-lumen endotracheal cannula with movable side holes provided by this utility model;
[0021] Figure 3 A schematic diagram of the structure of the inner side of the outer slip ring of the right double-lumen endotracheal tube with movable side hole provided by this utility model;
[0022] Figure 4 A schematic diagram of the outer side of the right double-lumen endotracheal tube outer slip ring with movable side hole provided by this utility model;
[0023] Figure 5 A schematic diagram of the lower end of the right double-lumen endotracheal cannula with movable side holes provided by this utility model.
[0024] The markings in the diagram are explained as follows:
[0025] 1. Main branch pipe; 2. Secondary branch pipe; 3. First set of bladders; 4. Second set of bladders; 5. Outer slip ring; 6. Connecting channel; 7. Inner slip ring; 8. Connecting piece; 9. Guide wire; 10. Positioning guide rail; 11. Limiting bracket; 12. Anti-detachment guide post; 13. Spring; 14. Elastic support; 15. Side hole; 16. Vent pipe. Detailed Implementation
[0026] As described in the background section, due to individual differences in human airway structure, especially the relatively shorter and straighter angle of the right main bronchus, correct placement of the RDLT becomes more difficult. Compared with left double-lumen endotracheal intubation, RDLT is more prone to mispositioning, leading to ventilation difficulties, such as accidental placement in the right upper lobe bronchus or misalignment of the side holes with the right upper lobe opening.
[0027] To solve this technical problem, this utility model provides a right double-lumen endotracheal tube with movable side holes, which is applied in thoracic surgery;
[0028] It includes a main branch pipe 1 and a secondary branch pipe 2. A first set of bladders 3 is provided at the lower end between the main branch pipe 1 and the secondary branch pipe 2. A second set of bladders 4 is provided at the lower end of the secondary branch pipe 2 and below the first set of bladders 3. A connecting channel 6 is opened inside the secondary branch pipe 2. A side hole assembly is provided at the lower end of the connecting channel 6. A moving mechanism is provided at the upper end of the connecting channel 6.
[0029] The side hole assembly includes an elastic support 14. The lower end of the secondary branch pipe 2 is fixed with the elastic support 14. The elastic support 14 has a side hole 15 inside, which is connected to the connecting channel 6.
[0030] The moving mechanism includes an outer slip ring 5. The outer slip ring 5 is sleeved on the outer side of the upper end of the secondary branch pipe 2. The outer slip ring 5 is slidably connected to the secondary branch pipe 2. A buckle assembly is provided between the outer side of the outer slip ring 5 and the secondary branch pipe 2.
[0031] The movable side-hole right double-lumen endotracheal cannula provided by this utility model, through its overall structural design, allows for more precise alignment of the right upper lobe opening with the side-hole 15, eliminating the need to adjust the cannula itself when misalignment occurs. This enables customized ventilation modes for each patient, minimizing dead space and improving oxygenation efficiency.
[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] Example 1:
[0035] Please refer to Figure 1-5 A movable side-port right double-lumen endotracheal tube includes a main bronchus 1 and a secondary bronchus 2. The main bronchus 1 is used for ventilation of the left lung. Its diameter and length are adapted to the anatomical structure of the human left bronchus. It is made of flexible material, which is easy to insert and does not easily damage the airway. The lumen of the main bronchus 1 is connected to the ventilation device, so that gas can smoothly enter the left lung. The secondary bronchus 2 is used for ventilation of the right lung. It works with the main bronchus 1 to achieve bilateral lung isolation ventilation. Its length and diameter are also designed according to the structure of the human right bronchus to ensure that gas is accurately delivered to all parts of the right lung.
[0036] A first set of cuffs 3 is provided at the lower end between the main bronchus 1 and the secondary bronchus 2. It is used to ensure that the ventilation gas enters the corresponding lung lobe without leakage. When the first set of cuffs 3 is inflated with appropriate amount of air, it will fit tightly against the tracheal wall of the human body. A second set of cuffs 4 is provided at the lower end of the secondary bronchus 2 and at the lower end of the first set of cuffs 3. After inflation, it can effectively isolate the two lungs, prevent secretions, blood and other substances from the affected lung from entering the healthy lung, and also avoid gas leakage during ventilation, thus ensuring the accuracy of ventilation.
[0037] The secondary branch pipe 2 has a connecting channel 6 inside. The lower end of the connecting channel 6 is provided with a side hole assembly. Specifically, the side hole assembly includes an elastic support 14. The elastic support 14 is fixed inside the lower end of the secondary branch pipe 2. The elastic support 14 has a side hole 15 inside. The side hole 15 is connected to the connecting channel 6. In order to facilitate the adjustment of the position of the side hole 15 and thus change the effective ventilation position, the upper end of the connecting channel 6 is provided with a moving mechanism.
[0038] Specifically, the moving mechanism includes an outer slip ring 5. An outer slip ring 5 is sleeved on the outer side of the upper end of the secondary branch pipe 2. The outer slip ring 5 is slidably connected to the secondary branch pipe 2. An inner slip ring 7 is provided on the inner side of the upper end of the connecting channel 6. A connecting piece 8 is fixed between the outer side of the inner slip ring 7 and the inner side of the outer slip ring 5. The connecting piece 8 is slidably connected to the secondary branch pipe 2. A guide wire 9 is provided on the inner side of the connecting channel 6. The upper end of the guide wire 9 is fixed to the inner wall of the inner slip ring 7. A vent pipe 16 is fixed to the lower end of the guide wire 9. The vent pipe 16 is located between the inner side of the connecting channel 6 and the inner side of the side hole 15. The outer side of the vent pipe 16 is respectively attached to the inner side of the connecting channel 6 and the inner side of the side hole 15. The guide wire 9 facilitates the connection between the inner slip ring 7 and the vent pipe 16, so that when the outer slip ring 5 slides, it drives the vent pipe 16 to move synchronously.
[0039] The guidewire 9 is made of nickel-titanium alloy, the ventilation tube 16 is made of medical plastic, and the elastic support 14 is made of medical silicone rubber. The ventilation tube 16 can easily open the side hole 15, so when the ventilation tube 16 moves, the position of the side hole 15 moves with the ventilation tube 16. In addition, the material properties of the elastic support 14 can fill the gap after the side hole 15 moves in time, maintaining the effectiveness of the ventilation position. This flexible adjustment mechanism can adapt to different surgical operation scenarios and individual differences of patients, achieving ideal lung isolation and ventilation status.
[0040] Example 2:
[0041] The movable side hole right double-lumen endotracheal cannula provided in Example 1 is further optimized. When the outer slip ring 5 slides to the ideal position, in order to quickly limit and fix the outer slip ring 5, a buckling assembly is provided between the outer side of the outer slip ring 5 and the secondary branch tube 2.
[0042] Specifically, a positioning guide rail 10 is symmetrically fixed on the outer side of the upper end of the secondary branch pipe 2. The outer slip ring 5 is slidably connected to the positioning guide rail 10. The buckle assembly includes a limiting seat 11. A limiting seat 11 is provided on the outer side of the outer slip ring 5 and on the outer side of the two positioning guide rails 10. The two limiting seats 11 are slidably connected to the two positioning guide rails 10 respectively. An anti-detachment guide post 12 is symmetrically fixed on the inner side of each limiting seat 11. The anti-detachment guide post 12 is located inside the outer slip ring 5 and is slidably connected to the outer slip ring 5. When the limiting seat 11 is pulled out so that it is no longer in contact with the positioning guide rail 10, it is convenient to release the limitation of the outer slip ring 5 so that the outer slip ring 5 can slide.
[0043] When the limiting seat 11 is released, in order to facilitate the quick reset of the limiting seat 11 and re-limit and fix the outer slip ring 5, a spring 13 is sleeved on the outside of each anti-detachment guide post 12 and located on the outside of the outer slip ring 5. The two ends of the spring 13 are fixed to the outer slip ring 5 and the limiting seat 11 respectively.
[0044] The process of using the movable side-hole right double-lumen endotracheal cannula provided by this utility model is as follows: After the cannula is inserted into the right bronchus, the first set of cuffs 3 and the second set of cuffs 4 are inflated to ensure the patient's ventilation. When the position is improper, there is no need to adjust the cannula. Just adjust the position of the side hole 15 to change the effective ventilation position, so as to more accurately align with the opening of the right upper lobe of the lung, so as to adapt to patients whose opening of the right upper lobe is high or low.
Claims
1. A right double-lumen endotracheal cannula with movable side holes, characterized in that, It includes a main branch pipe (1) and a secondary branch pipe (2). A first sleeve (3) is provided at the lower end between the main branch pipe (1) and the secondary branch pipe (2). A second sleeve (4) is provided at the lower end of the secondary branch pipe (2) and at the lower end of the first sleeve (3). A connecting channel (6) is provided inside the secondary branch pipe (2). A side hole assembly is provided at the lower end of the connecting channel (6). A moving mechanism is provided at the upper end of the connecting channel (6). The side hole assembly includes an elastic support (14), and the lower end of the secondary branch pipe (2) is fixed with an elastic support (14). The elastic support (14) has a side hole (15) inside, and the side hole (15) is connected to the connecting channel (6). The moving mechanism includes an outer slip ring (5), and the outer slip ring (5) is sleeved on the outer side of the upper end of the secondary branch pipe (2). The outer slip ring (5) is slidably connected to the secondary branch pipe (2), and a buckle assembly is provided between the outer side of the outer slip ring (5) and the secondary branch pipe (2).
2. The right double-lumen endotracheal cannula with movable side holes according to claim 1, characterized in that, The moving mechanism also includes an inner slip ring (7), a connecting piece (8), and a guide wire (9). An inner slip ring (7) is provided on the inner side of the upper end of the connecting channel (6). A connecting piece (8) is fixed between the outer side of the inner slip ring (7) and the inner side of the outer slip ring (5). The connecting piece (8) is slidably connected to the secondary branch pipe (2). A guide wire (9) is provided on the inner side of the connecting channel (6).
3. The right double-lumen endotracheal cannula with movable side holes according to claim 2, characterized in that, The upper end of the guide wire (9) is fixed to the inner wall of the inner slip ring (7), and the lower end of the guide wire (9) is fixed with a vent pipe (16). The vent pipe (16) is located between the inner side of the connecting channel (6) and the inner side of the side hole (15). The outer side of the vent pipe (16) is respectively attached to the inner side of the connecting channel (6) and the inner side of the side hole (15).
4. The right double-lumen endotracheal cannula with movable side holes according to claim 1, characterized in that, The outer side of the upper end of the secondary branch pipe (2) is symmetrically fixed with positioning guide rails (10).
5. The right double-lumen endotracheal cannula with movable side holes according to claim 4, characterized in that, The buckle assembly includes a limiting seat (11). The outer side of the outer slip ring (5) and the outer side of the two positioning guide rails (10) are provided with limiting seats (11). The two limiting seats (11) are slidably connected to the two positioning guide rails (10). Each limiting seat (11) has an anti-detachment guide post (12) symmetrically fixed on its inner side. The anti-detachment guide post (12) is located inside the outer slip ring (5) and is slidably connected to the outer slip ring (5).
6. The right double-lumen endotracheal cannula with movable side holes according to claim 5, characterized in that, Each of the anti-detachment guide posts (12) is fitted with a spring (13) on the outside of the outer slip ring (5), and the two ends of the spring (13) are fixed to the outer slip ring (5) and the limiting seat (11) respectively.