Trachea cannula with oral cavity and airway secretion suction function
The endotracheal intubation system, with its double external tube structure and Y-shaped suction tube design, solves the problem that traditional intubation tubes cannot simultaneously cover both bronchi, achieving efficient and safe airway secretion clearance and reducing operation time and the risk of complications.
Patent Information
- Application Number
- CN202511989586.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-01-23
AI Technical Summary
Traditional endotracheal intubation methods cannot simultaneously cover both the left and right bronchial regions, leading to prolonged operation time and an increased risk of complications such as airway bleeding and infection.
A endotracheal tube with oral and airway secretion suction function was designed. It adopts a double outer tube structure, with an inner tube, rubber column, telescopic tube and suction tube inside. The suction tube can be unfolded into a Y shape to accurately insert into the left and right main bronchi. Combined with the baffle structure to uniform airflow pressure, it ensures stability and safety.
It enables complete airway secretion clearance without multiple adjustments, reducing operation time, improving the practicality and safety of clinical use, and reducing the risk of airway bleeding and infection.
Smart Images
Figure CN121371418A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to an endotracheal tube with the function of absorbing oral and airway secretions. Background Technology
[0002] Medical device technology is a multidisciplinary system integrating medicine, engineering, and materials science. Its core is the research and development and production of equipment and instruments that assist in disease diagnosis, treatment, rehabilitation, and health management. It encompasses everything from basic material research (such as biocompatible polymer materials) to device functional design (such as imaging algorithms for imaging equipment) and clinical application adaptation (such as ergonomic optimization of surgical instruments). Through technological innovation, it improves medical efficiency and safety. Typical clinical applications of this technology include electrocardiogram monitors and artificial joints, providing crucial technical support for healthcare services.
[0003] The aforementioned technological systems have also driven the precision development of specialized medical devices, one of which is the endotracheal tube with oral and airway secretion suction capabilities. It can suction secretions from the patient's mouth or airway in real time or on demand. This design effectively avoids the risk of suffocation caused by secretions blocking the airway and reduces the probability of lung infection. It is particularly suitable for patients undergoing general anesthesia, those requiring mechanical ventilation due to respiratory failure, and other individuals unable to expectorate independently. This represents a significant innovative application of medical device technology addressing the pain points of clinical airway management.
[0004] However, some traditional endotracheal tubes in existing technologies use a single-lumen design, which can only aspirate secretions from the main trachea or, by adjusting its position, from one bronchus. They cannot simultaneously cover both the left and right bronchial regions. To complete airway clearance, multiple insertions and removals or adjustments to the tube position are required, which not only prolongs the procedure and increases the workload of medical staff, but may also cause friction damage to the patient's airway mucosa due to repeated manipulation, increasing the risk of complications such as airway bleeding and infection.
[0005] Therefore, a endotracheal tube with oral and airway secretion suction function is proposed to address the above problems. Summary of the Invention
[0006] To overcome the above deficiencies, the present invention provides an endotracheal tube with oral and airway secretion suction functions, aiming to improve the problem that some traditional endotracheal tubes in the prior art cannot simultaneously cover the left and right bronchial regions, thus prolonging the operation time and increasing the risk of complications such as airway bleeding and infection.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] An endotracheal tube with oral and airway secretion suction function includes two outer tubes. An air delivery component is fixedly connected to the outside of one of the outer tubes, and an inner tube is provided on the inner wall of the other outer tube. An air bladder is fixedly connected to the adjacent side of the two outer tubes, and the inner tube passes through the inside of the air bladder. A rubber column is fixedly connected to one end of the inner tube, and one end of one of the outer tubes is fixed to one side of the rubber column. Multiple thin tubes are fixedly connected to the inner wall of the rubber column, and a telescopic tube is slidably connected to the inner wall of the rubber column. An air hole communicating with the thin tube is opened on one side of the telescopic tube, and an suction tube communicating with the telescopic tube is slidably connected to the inside of the rubber column.
[0009] As a further description of the above technical solution:
[0010] The gas delivery assembly includes a gas delivery pipe fixed to the outside of one of the outer pipes, and a sealing gasket is fixedly connected to the other end of the gas delivery pipe;
[0011] As a further description of the above technical solution:
[0012] An isolation ring is fixedly connected to one end of the inner tube, and the outer side of the isolation ring is fixedly connected to the inner wall of one of the outer tubes.
[0013] As a further description of the above technical solution:
[0014] The telescopic tube has an inner cavity, and multiple baffles are fixedly connected to the inner wall of the inner cavity.
[0015] As a further description of the above technical solution:
[0016] Each pair of spoilers works together to form a figure-eight structure.
[0017] As a further description of the above technical solution:
[0018] A rubber head is fixedly connected to one end of the rubber column, and a suction tube is slidably connected to the inner wall of the rubber head;
[0019] As a further description of the above technical solution:
[0020] The suction tube is Y-shaped and connected to the telescopic tube;
[0021] As a further description of the above technical solution:
[0022] The outer tube is detachably connected to two retaining rings, which are symmetrically staggered. The two retaining rings are fixedly connected to two toothed pads.
[0023] The present invention has the following beneficial effects:
[0024] 1. In this invention, the suction tube is initially stored in the rubber column. After the main body of the tube is positioned, it can be unfolded into a Y-shape. Its two branches can be accurately inserted into the left and right main bronchus. The entire airway secretion can be cleared without adjusting the tube position multiple times, which effectively reduces the operation time and improves the practicality and safety of clinical use.
[0025] 2. In this invention, the baffles inside the telescopic tube are designed in pairs in a figure-eight pattern. This structure can reasonably divide the airflow—part of the gas is transmitted to the far end along the inner cavity, while part of the gas is blocked by the figure-eight structure and becomes locally stagnant, so that the pressure inside the inner cavity increases evenly, preventing the telescopic tube from jamming or shifting due to uneven pressure, and ensuring the stability of the suction tube deployment process. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of an endotracheal tube with oral and airway secretion aspiration function proposed in this invention;
[0027] Figure 2 This is a schematic diagram of the air delivery tube of an endotracheal tube with oral and airway secretion absorption function proposed in this invention.
[0028] Figure 3 This is a schematic diagram of the cuff of an endotracheal tube with oral and airway secretion suction function proposed in this invention.
[0029] Figure 4 This is a schematic diagram of the structure of a thin tube for endotracheal intubation with oral and airway secretion absorption function proposed in this invention.
[0030] Figure 5 This is a schematic diagram of the structure of a rubber column of an endotracheal tube with oral and airway secretion absorption function proposed in this invention.
[0031] Figure 6 This is a schematic diagram of the structure of a telescopic tube for endotracheal intubation with oral and airway secretion absorption function proposed in this invention.
[0032] Figure 7 This is a schematic diagram of the suction tube of an endotracheal tube with oral and airway secretion suction function proposed in this invention.
[0033] Figure 8 This is a schematic diagram of the dental pad for an endotracheal tube with oral and airway secretion absorption function proposed in this invention.
[0034] Legend:
[0035] 1. Outer tube; 2. Gas delivery tube; 3. Sealing gasket; 4. Inner tube; 5. Isolation ring; 6. Airbag; 7. Rubber column; 8. Thin tube; 9. Telescopic tube; 10. Air hole; 11. Inner cavity; 12. Baffle; 13. Rubber head; 14. Suction tube; 15. Clamping ring; 16. Tooth pad. Detailed Implementation
[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0037] Reference Figures 1 to 8 The present invention provides an embodiment of an endotracheal tube with oral and airway secretion aspiration function, comprising two outer tubes 1, which serve as the main body of the tube and are used to insert into the patient's trachea and provide a basic channel for gas transmission and secretion aspiration; a gas delivery assembly is fixedly connected to the outside of one of the outer tubes 1, which can inflate the cuff 6 and provide a gas source for the airflow-driven telescopic tube 9; the gas delivery assembly includes a gas delivery tube 2 fixed to the outside of one of the outer tubes 1, which is used to transmit externally injected gas to the annular cavity between the outer tube 1 and the inner tube 4; a sealing gasket 3 is fixedly connected to the other end of the gas delivery tube 2, which is used to seal the connection between the gas delivery tube 2 and the gas delivery needle tube to prevent gas leakage.
[0038] One of the outer tubes 1 has an inner tube 4 on its inner wall. The inner tube 4 is used to cooperate with the outer tube 1 to form an annular cavity and guide the gas flow to the airbag 6. One end of the inner tube 4 is fixedly connected to an isolation ring 5. The isolation ring 5 is used to tightly fit the inner wall of the outer tube 1 to form a gas barrier to prevent gas from escaping to the proximal end and to ensure that the gas flows into the airbag 6 in a concentrated manner. At the same time, it prevents secretions from accidentally entering the airbag 6 and making it difficult to clean. The outer side of the isolation ring 5 is fixedly connected to the inner wall of one of the outer tubes 1. The airbag 6 is fixedly connected to the adjacent side of the two outer tubes 1. The airbag 6 is made of highly elastic medical silicone material. After inflation, it can expand evenly and fit tightly against the inner wall of the trachea to achieve mechanical fixation of the outer tube 1 in the trachea. The inner tube 4 runs through the inside of the airbag 6. One end of the inner tube 4 is fixedly connected to a rubber column 7. The rubber column 7 is used to hold the suction tube 14 in its initial state, so that the outer tube 1 is in a straight line shape. It also provides a carrier for the installation and sliding of the thin tube 8 and the telescopic tube 9.
[0039] One end of one of the outer tubes 1 is fixed to one side of the rubber column 7. Multiple thin tubes 8 are fixedly connected to the inner wall of the rubber column 7. The thin tubes 8 are used to divert part of the gas in the annular cavity of the outer tube 1 and the inner tube 4 to the air hole 10 of the telescopic tube 9 to supply gas to the inner cavity 11 of the telescopic tube 9. The telescopic tube 9 is slidably connected to the inner wall of the rubber column 7. The telescopic tube 9 can slide along the inner wall of the rubber column 7 under the push of the airflow. It is used to squeeze the suction tube 14 so that it slides out from the rubber head 13 and unfolds. At the same time, its inner cavity 11 provides a channel for gas transmission and negative pressure conduction. An air hole 10 connected to the thin tube 8 is opened on one side of the telescopic tube 9. The air hole 10 is used to introduce the gas transmitted by the thin tube 8 into the inner cavity 11 of the telescopic tube 9 to ensure that the gas smoothly enters the inner cavity 11 to drive the telescopic tube 9.
[0040] The telescopic tube 9 has an inner cavity 11, which is used to contain gas and provide installation space for the baffles 12. It also serves as a negative pressure conduction path to transmit negative pressure to the suction tube 14. Multiple baffles 12 are fixedly connected to the inner wall of the inner cavity 11. The baffles 12 are used to divert the airflow entering the inner cavity 11. Every two baffles 12 cooperate with each other and form a figure-eight structure. The figure-eight-shaped baffles 12 can allow some gas to be transmitted to the distal end along the inner cavity 11, while some gas is blocked and forms local stagnation, so that the pressure in the inner cavity 11 increases evenly and prevents the telescopic tube 9 from jamming or shifting due to uneven pressure, thus ensuring that the telescopic tube 9 slides smoothly. The rubber column 7 is slidably connected to the suction tube 14, which is connected to the telescopic tube 9. The suction tube 14 is used to suction secretions in the patient's airway.
[0041] One end of the rubber column 7 is fixedly connected to a rubber head 13. The rubber head 13 is used to abut against the tracheal bifurcation when the suction tube 14 is deployed, forming a secondary positioning. Its hemispherical arc design can adapt to the differences in airway anatomy among different patients, avoiding pressure damage to the mucosa at the bifurcation. The suction tube 14 is slidably connected to the inner wall of the rubber head 13. The suction tube 14 is Y-shaped. The Y-shaped structure allows the two branches to be accurately inserted into the left and right main bronchi after deployment, so that the clearing of secretions from the entire airway can be completed without multiple adjustments to the tube position. This design effectively reduces operation time, improves the practicality and safety of clinical use, and connects to the telescopic tube 9. The outer tube 1 has two detachable retaining rings 15 on its exterior, which are used to fix the dental pads 16 to the surface of the outer tube 1. The two retaining rings 15 are symmetrically staggered, and the two retaining rings 15 are externally fixedly connected to two dental pads 16. The hollow structure of the dental pads 16 not only provides protection for the outer tube 1, but also prevents the lumen from being blocked due to the patient's biting, and avoids the insertion tube from shifting position due to the patient's head movement and swallowing.
[0042] Working principle: In the initial state, the suction tube 14 is housed inside the rubber column 7, with an overall straight structure, facilitating intubation. In clinical use, the epiglottis is first lifted using a laryngoscope to expose the patient's glottis. The external tube 1 is then inserted along the laryngoscope's guiding path. At this time, the guide wire inserted inside the external tube 1 maintains the rigidity of the tube body, ensuring smooth passage through the glottis into the trachea. After insertion, the guide wire is removed to restore the flexibility of the tube body to reduce irritation to the airway mucosa. After removing the laryngoscope, imaging examination confirms that the end of the external tube 1 is located at the tracheal bifurcation, laying the foundation for subsequent branching operations.
[0043] During the fixation phase, the gas delivery needle is punctured and connected to the gas delivery tube 2. The injected gas flows along the annular cavity between the outer tube 1 and the inner tube 4. The isolation ring 5 at the outer end of the inner tube 4 fits tightly against the inner wall of the outer tube 1, forming a gas barrier to prevent backflow and allowing the gas to concentrate and flow into the air bag 6. After the air bag 6 is inflated, it expands evenly and fits tightly against the inner wall of the trachea, achieving mechanical fixation of the outer tube 1.
[0044] Simultaneously, a portion of the gas is diverted through the thin tube 8 inside the rubber column 7 and enters the inner cavity 11 through the vent 10 on the side wall of the telescopic tube 9. The baffles 12 inside the inner cavity 11 employ a figure-eight configuration in pairs, causing some gas to be transported further along the inner cavity 11, while some gas is blocked and stagnated by the figure-eight structure, resulting in a uniform increase in pressure within the inner cavity 11. This pushes the telescopic tube 9 to slide smoothly along the inner wall of the rubber column 7. During this process, the corresponding connection design between the thin tube 8 and the vent 10 ensures a stable gas transmission path and prevents airflow interruption due to the sliding of the telescopic tube 9.
[0045] As the telescopic tube 9 is advanced toward the rubber head 13, its end compresses the retracted suction tube 14. After being compressed, the suction tube 14 slides out from the pre-reserved channel of the rubber head 13 and naturally unfolds into a Y-shape—the two branches precisely enter the left and right main bronchi respectively, while the main channel remains connected to the telescopic tube 9. Simultaneously, the rubber head 13, due to the thrust of the telescopic tube 9, presses firmly against the tracheal branch, forming a secondary positioning. Its hemispherical arc design can adapt to the airway anatomy differences of different patients, avoiding pressure damage to the mucosa at the bifurcation point.
[0046] Finally, the bite pad 16 is secured by the clasps 15 on the outer wall of the outer tube 1: the two clasps 15 are symmetrically staggered, and the hollow structure of the bite pad 16 provides protection for the outer tube 1 and prevents the lumen from being blocked due to the patient's biting. After connecting the end of the outer tube 1 to the negative pressure suction device, the negative pressure is transmitted through the inner lumen 11 of the telescopic tube 9 to the Y-shaped suction tube 14, realizing the simultaneous suction of secretions in the left and right bronchi and the main trachea. This solves the defect of traditional single-lumen intubation that cannot simultaneously clear both sides of the airway, and significantly reduces the risk of postoperative pulmonary infection.
[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An endotracheal tube with oral and airway secretion suction function, comprising two external tubes (1), characterized in that: One of the outer tubes (1) is fixedly connected to an air delivery assembly. One of the outer tubes (1) has an inner tube (4) on its inner wall. An airbag (6) is fixedly connected to one side of the two outer tubes (1). The inner tube (4) passes through the inside of the airbag (6). A rubber column (7) is fixedly connected to one end of the inner tube (4). One end of one of the outer tubes (1) is fixed to one side of the rubber column (7). A plurality of thin tubes (8) are fixedly connected to the inner wall of the rubber column (7). A telescopic tube (9) is slidably connected to the inner wall of the rubber column (7). An air hole (10) communicating with the thin tube (8) is opened on one side of the telescopic tube (9). An suction tube (14) communicating with the telescopic tube (9) is slidably connected to the inside of the rubber column (7).
2. The endotracheal tube with oral and airway secretion aspiration function according to claim 1, characterized in that: The gas delivery assembly includes a gas delivery pipe (2) fixed to the outside of one of the outer pipes (1), and a sealing gasket (3) is fixedly connected to the other end of the gas delivery pipe (2).
3. The endotracheal tube with oral and airway secretion aspiration function according to claim 1, characterized in that: An isolation ring (5) is fixedly connected to one end of the inner tube (4), and the outer side of the isolation ring (5) is fixedly connected to the inner wall of one of the outer tubes (1).
4. The endotracheal tube with oral and airway secretion aspiration function according to claim 1, characterized in that: The telescopic tube (9) has an inner cavity (11) inside, and multiple baffles (12) are fixedly connected to the inner wall of the inner cavity (11).
5. The endotracheal tube with oral and airway secretion aspiration function according to claim 4, characterized in that: Each pair of the aforementioned spoilers (12) cooperate with each other and form a figure-eight structure after cooperation.
6. The endotracheal tube with oral and airway secretion aspiration function according to claim 1, characterized in that: One end of the rubber column (7) is fixedly connected to a rubber head (13), and a suction tube (14) is slidably connected to the inner wall of the rubber head (13).
7. The endotracheal tube with oral and airway secretion aspiration function according to claim 6, characterized in that: The suction tube (14) is Y-shaped and connected to the telescopic tube (9).
8. The endotracheal tube with oral and airway secretion aspiration function according to claim 1, characterized in that: The outer tube (1) is detachably connected to two retaining rings (15), and the two retaining rings (15) are symmetrically staggered. The two retaining rings (15) are fixedly connected to two tooth pads (16).