Degradable lubricated double-lumen bronchial cannula

Abstract

The utility model discloses a degradable lubrication double -cavity bronchial intubation, including main catheter, double -cavity branch catheter, bottom intubation one, bottom intubation two and double -cavity outer tube, be located main catheter bottom and be provided with double -cavity branch catheter, double -cavity branch catheter left end bottom is provided with air bag no.

Description

Technical Field

[0001] This utility model relates to the field of endotracheal intubation technology, specifically a biodegradable lubricated double-lumen endotracheal tube. Background Technology

[0002] In modern medicine, endotracheal intubation is a key means to ensure the patient's airway is open and maintain respiratory function. It is widely used in anesthesia, emergency care and intensive care. With the continuous development of medical technology, higher requirements have been placed on the performance and safety of endotracheal intubation. In thoracic surgery and other scenarios, double-lumen endotracheal intubation can achieve independent ventilation management of the left and right lungs, creating good conditions for surgery. However, traditional endotracheal intubation still has certain limitations in terms of materials and structural design, which need to be improved to better meet clinical needs.

[0003] Existing endotracheal intubation materials have poor biocompatibility, and long-term indwelling can easily lead to inflammatory reactions and tissue fibrosis. The single-balloon sealing method is difficult to accurately adapt to the airways of different patients, and there is a risk of air leakage or excessive compression. Insufficient lubrication measures result in high frictional resistance during intubation, which can easily damage the airway mucosa. Furthermore, poor equipment compatibility makes it inconvenient to connect to anesthesia machines or ventilators, affecting the patient's ventilation. These problems limit the clinical application of endotracheal intubation and the patient's treatment experience. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a biodegradable lubricated double-lumen endotracheal cannula. The main tube and the double-lumen directional tube are combined with the arc-shaped bottom opening of the bottom tube to precisely separate the ventilation paths of the left and right lungs, reducing mechanical stimulation during intubation. The biodegradable lubricating coating has a layered design to construct a dual lubrication system, reducing resistance before intubation and continuously replenishing the lubricating film after intubation to protect the airway mucosa. The connector at the top of the double-lumen outer tube facilitates connection to anesthesia machines and ventilators, improving equipment compatibility.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a biodegradable lubricating dual-lumen endotracheal cannula, comprising a main tube, a dual-lumen directional catheter, a bottom cannula one, a bottom cannula two, and a dual-lumen outer tube. The dual-lumen directional catheter is located at the bottom of the main tube. An airbag one is located at the bottom of the left end of the dual-lumen directional catheter, and an airbag two is located at the bottom of the right end of the dual-lumen directional catheter. The bottom cannula one is located at the bottom of the airbag one, and the bottom cannula two is located at the bottom of the airbag two. A biodegradable lubricating coating one is provided around the bottom of the outer wall of the main tube. A biodegradable lubricating coating two is provided at both ends of the outer wall of the dual-lumen directional catheter. A biodegradable lubricating coating three is provided on the outer walls of the bottom cannula one and the bottom cannula two.

[0008] Preferably, a double-lumen outer tube is provided at the top of the main tube, and both ends of the top of the double-lumen outer tube are provided with access connectors. The bottom ends of the first bottom insertion tube and the second bottom insertion tube are both provided with arc-shaped bottom openings.

[0009] Preferably, a lubricating fluid outlet is provided on the front side of the bottom insertion tube near the top, and both ends of the bottom of the lubricating fluid outlet are provided with bidirectional guide grooves.

[0010] Preferably, a lubricating fluid outlet 2 is provided on the front side of the bottom insertion tube 2 near the top, and both ends of the bottom of the lubricating fluid outlet 2 are provided with bidirectional flow channels 2.

[0011] Preferably, an airbag inflation tube is provided at the top left side of the main tube and at the top right side of the main tube, and an inflation connector is provided at the top of the airbag inflation tube.

[0012] Preferably, a lubricating fluid supply pipe is provided on the left side of the main tube near the top, a micro supply pump is provided at the left end of the lubricating fluid supply pipe, and a storage bottle is provided at the bottom of the micro supply pump.

[0013] Preferably, a second lubricating fluid supply pipe is provided on the right side of the main pipe near the top, a second micro supply pump is provided on the right end of the second lubricating fluid supply pipe, and a second storage bottle is provided at the bottom of the second micro supply pump.

[0014] (III) Beneficial Effects

[0015] This invention provides a biodegradable, lubricated, dual-lumen endotracheal cannula. It has the following beneficial effects:

[0016] (1) This biodegradable lubricating double-lumen endotracheal tube uses polylactic acid and glycolic acid copolymers for the main tube, bottom tube 1, and bottom tube 2. It has both good mechanical strength and biocompatibility. Its degradation products are only carbon dioxide and water, avoiding the risk of inflammatory reactions and tissue fibrosis caused by long-term retention of traditional polymer materials in the body. It is suitable for airway management scenarios that require short-term indwelling. The cuff is made of polyhydroxyalkanoate, which is a biodegradable elastic material synthesized by microorganisms. It has excellent fatigue resistance and can withstand multiple inflation and deflation cycles without losing elasticity, ensuring the stability of airway sealing. The biodegradable lubricating coating is made of silk fibroin SF material. Its molecular structure has good affinity with the glycoproteins on the surface of human mucosa. It can quickly form a uniform lubricating film upon contact, significantly reducing the frictional resistance between the tube and the airway wall during intubation, thereby reducing mechanical damage to mucosal epithelial cells and reducing the incidence of postoperative laryngeal edema and airway bleeding complications.

[0017] (2) This biodegradable lubricating double-lumen endotracheal tube, with its combination design of the main tube and the double-lumen branching catheter, achieves precise separation of the ventilation pathways to the left and right lungs. Combined with the arc-shaped bottom openings of the first and second bottom tubes, it better conforms to the bronchial anatomy, reducing mechanical stimulation during intubation. The first and second cuffs are located at opposite ends of the double-lumen branching catheter. Through independent cuff inflation tubes and connectors, the inflation volume can be precisely adjusted according to the patient's airway diameter, forming a personalized seal and avoiding potential air leakage or excessive mucosal compression problems associated with traditional single-cuff tubes. The biodegradable lubricating coating is layered, with biodegradable lubricating coating one, two, and three covering the bottom of the main tube and the double-lumen branching catheter, respectively. The outer wall of the bi-lumen cannula and the surface of the bottom insertion tube, combined with the lubricating fluid outlet on the front side of the bottom insertion tube and the bidirectional guide groove, construct a dual lubrication system of pre-coated lubricating film plus dynamic replenishment lubrication. Before insertion, the silk fibroin coating can directly play a lubricating role and reduce the initial insertion resistance. After insertion, the lubricating fluid in the reservoir bottle is driven by a micro supply pump to be delivered to the corresponding outlet through lubricating fluid supply tube one and lubricating fluid supply tube two. It is then evenly diffused along the guide groove to the interface between the insertion tube and the airway, continuously replenishing the lubricating film lost due to friction. This is suitable for continuous protection of the airway mucosa during long-term surgery. The access connector design at the top of the double-lumen outer tube facilitates connection to anesthesia machines and ventilators, improving equipment compatibility. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention;

[0019] Figure 2 This is a front view of the present invention with multiple coatings removed.

[0020] Figure 3 This is a schematic cross-sectional view of the main tube and the double-lumen outer tube area of ​​this utility model;

[0021] Figure 4 This is a partial cross-sectional view of the first and second bottom insertion tubes of this utility model.

[0022] In the diagram: 1. Main tube; 2. Dual-lumen branching tube; 3. Airbag 1; 4. Bottom insertion tube 1; 5. Airbag 2; 6. Bottom insertion tube 2; 7. Biodegradable lubricating coating 1; 8. Biodegradable lubricating coating 2; 9. Biodegradable lubricating coating 3; 10. Dual-lumen outer tube; 11. Connecting connector; 12. Arc-shaped bottom opening; 13. Lubricating fluid outlet 1; 14. Bidirectional flow channel 1; 15. Lubricating fluid outlet 2; 16. Bidirectional flow channel 2; 17. Airbag inflation tube; 18. Inflation connector; 19. Lubricating fluid supply tube 1; 20. Miniature supply pump 1; 21. Storage bottle 1; 22. Lubricating fluid supply tube 2; 23. Miniature supply pump 2; 24. Storage bottle 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a biodegradable and lubricated double-lumen endotracheal cannula. Firstly, regarding the overall structure, the cannula includes a main tube 1, a double-lumen directional catheter 2, a bottom cannula 4, a bottom cannula 2 6, and a double-lumen external tube 10. The double-lumen directional catheter 2 is located at the bottom of the main tube 1. This design achieves precise separation of the left and right lung ventilation paths. In actual use, it can better conform to the bronchial anatomy with the bottom cannula 4 and bottom cannula 2 6, reducing mechanical stimulation during intubation. A cuff 3 is located at the bottom of the left end of the double-lumen directional catheter 2, and a cuff 2 5 is located at the bottom of the right end. The bottom cannula 4 is located at the bottom of cuff 3, and the bottom cannula 2 6 is located at the bottom of cuff 2 5. The cuffs are made of polyhydroxyalkanoate, a biodegradable elastic material synthesized by microorganisms, which has excellent fatigue resistance. In actual operation, it can be easily displaced by the top left and top right sides of the main tube 1. The balloon inflation tube 17 and inflation connector 18 at the end inflate the first balloon 3 and the second balloon 5 respectively. The inflation volume is precisely adjusted according to the patient's airway diameter, so that the balloons fit tightly against the airway wall after inflation, forming a personalized seal. This avoids the problems of air leakage or excessive mucosal compression that may occur with traditional single balloons, ensuring the stability of the airway seal. A biodegradable lubricating coating 7 is set around the bottom of the outer wall of the main tube 1. Biodegradable lubricating coating 8 is set at both ends of the outer wall of the double-lumen directional tube 2. Biodegradable lubricating coating 9 is set on the outer wall of the bottom insertion tube 4 and the bottom insertion tube 6. The biodegradable lubricating coatings are all made of silk fibroin SF material. Before insertion, its good lubrication performance can reduce the frictional resistance between the tube body and the airway wall during insertion, allowing the tube to enter the airway more smoothly. After insertion, if the operation time is long, it can work with other structures to provide continuous protection for the airway mucosa.

[0025] A double-lumen external tube 10 is provided at the top of the main tube 1. Both ends of the double-lumen external tube 10 are provided with access connectors 11. In practical applications, the access connectors 11 facilitate the connection of anesthesia machines and ventilators, improve equipment compatibility, and ensure that patients can receive sufficient oxygen supply during surgery to maintain normal respiratory function. The bottom ends of the first bottom tube 4 and the second bottom tube 6 are both provided with arc-shaped bottom openings 12. The design of the arc-shaped bottom openings 12 further reduces the mechanical stimulation of the airway during intubation.

[0026] A lubricant outlet 13 is located near the top of the first bottom tube 4, with bidirectional flow channels 14 at both ends of the bottom of the lubricant outlet 13. A lubricant outlet 25 is located near the top of the second bottom tube 6, with bidirectional flow channels 26 at both ends of the bottom of the lubricant outlet 25. A lubricant supply tube 19 is located near the top of the left side of the main tube 1, with a micro supply pump 20 at its left end and a storage bottle 21 at its bottom. A lubricant supply tube 22 is located near the top of the right side of the main tube 1, with a micro supply pump 23 at its right end and a storage bottle 24 at its bottom. These structures work together to provide continuous lubricant replenishment. The power and storage space ensure that the interface between the intubation tube and the airway is always adequately lubricated during long surgeries, reducing mucosal damage. When the operation is long, the micro supply pump 20 and micro supply pump 23 start to work. They respectively deliver the lubricant in the reservoir 21 and reservoir 24 to the lubricant outlets 13 and 25 in front of the bottom intubation tube 4 and bottom intubation tube 26 through the lubricant supply tube 19 and lubricant supply tube 22. The lubricant then spreads evenly along the bidirectional guide channel 14 and bidirectional guide channel 26 to the interface between the intubation tube and the airway, continuously replenishing the lubricating film lost due to friction. Together with the pre-coated lubricating film before intubation, they form a dual lubrication system to better protect the airway mucosa.

[0027] Working principle: Before intubation, the biodegradable lubricating coating of silk fibroin on the outer walls of the main tube 1, the double-lumen directional tube 2, the bottom tube 4, and the bottom tube 6 plays its role. Biodegradable lubricating coatings 7, 8, and 9, with their excellent lubrication properties, reduce the frictional resistance between the tube and the airway wall during intubation, allowing for smoother entry into the airway. During intubation, the cuffs 3 and 5 are inflated through the inflation tubes 17 and inflation connectors 18 at the left and right ends of the main tube 1, respectively. The inflation volume is adjusted according to the patient's specific condition. After inflation, cuffs 3 and 5 fit tightly against the airway wall, achieving a personalized seal and ensuring effective separation of the left and right lung ventilation pathways, avoiding air leakage and excessive pressure on the mucosa. After compression and intubation are completed, if the operation takes a long time, the miniature supply pump 20 and miniature supply pump 23 will start working. They will deliver the lubricating fluid from the reservoir 21 and reservoir 24 to the lubricating fluid outlets 13 and 25 on the front side of the bottom intubation tube 4 and bottom intubation tube 26, respectively, through the lubricating fluid supply tube 19 and lubricating fluid supply tube 22. The lubricating fluid will then spread evenly along the bidirectional guide channel 14 and bidirectional guide channel 26 to the interface between the intubation tube and the airway, continuously replenishing the lubricating film lost due to friction, and providing continuous protection for the airway mucosa. The access connectors 11 at both ends of the top of the double-lumen external tube 10 are used to connect to the anesthesia machine or ventilator to ensure that the patient can receive sufficient oxygen supply during the operation and maintain normal respiratory function.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biodegradable, lubricating, dual-lumen endotracheal cannula, characterized in that: It includes a main tube (1), a double-lumen directional catheter (2), a bottom insertion cannula one (4), a bottom insertion cannula two (6) and a double-lumen outer tube (10). The double-lumen directional catheter (2) is located at the bottom of the main tube (1). An airbag one (3) is located at the bottom of the left end of the double-lumen directional catheter (2). An airbag two (5) is located at the bottom of the right end of the double-lumen directional catheter (2). The bottom insertion cannula one (4) is located at the bottom of the airbag one (3). The bottom insertion cannula two (6) is located at the bottom of the airbag two (5). A biodegradable lubricating coating one (7) is located around the bottom of the outer wall of the main tube (1). A biodegradable lubricating coating two (8) is located at both ends of the outer wall of the double-lumen directional catheter (2). A biodegradable lubricating coating three (9) is located on the outer wall of the bottom insertion cannula one (4) and the outer wall of the bottom insertion cannula two (6).

2. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: A double-lumen outer tube (10) is provided at the top of the main tube (1). Both ends of the top of the double-lumen outer tube (10) are provided with access connectors (11). The bottom end of the first bottom tube (4) and the bottom end of the second bottom tube (6) are provided with arc-shaped bottom openings (12).

3. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: A lubricating fluid outlet (13) is provided on the front side of the bottom insertion tube (4) near the top, and a bidirectional flow channel (14) is provided at both ends of the bottom of the lubricating fluid outlet (13).

4. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: A lubricating fluid outlet 2 (15) is provided on the front side of the bottom insertion tube 2 (6) near the top, and a bidirectional flow channel 2 (16) is provided at both ends of the bottom of the lubricating fluid outlet 2 (15).

5. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: An airbag inflation tube (17) is provided at the top left side of the main tube (1) and at the top right side of the main tube (1), and an inflation connector (18) is provided at the top of the airbag inflation tube (17).

6. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: A lubricating fluid supply pipe (19) is provided on the left side near the top of the main pipe (1). A micro supply pump (20) is provided on the left end of the lubricating fluid supply pipe (19). A storage bottle (21) is provided at the bottom of the micro supply pump (20).

7. The biodegradable lubricating dual-lumen endotracheal cannula according to claim 1, characterized in that: A lubricating fluid supply pipe 2 (22) is provided on the right side of the main pipe (1) near the top. A micro supply pump 2 (23) is provided at the right end of the lubricating fluid supply pipe 2 (22). A storage bottle 2 (24) is provided at the bottom of the micro supply pump 2 (23).

Images