Double-cuff emergency intubation cannula
By designing a double-bag emergency intubation tube, the difficulties of conventional balloon endotracheal intubation via the nose were solved, enabling smooth insertion and effective ventilation under different intubation paths, and adapting to the intubation needs in emergency situations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 王国军
- Filing Date
- 2025-01-14
- Publication Date
- 2026-06-02
AI Technical Summary
Conventional balloon endotracheal intubation presents difficulties when performing nasotracheal intubation, especially in emergency situations where it may delay airway establishment. Furthermore, the balloon can only be positioned in the middle of the airway, making it difficult to adapt to the needs of different intubation paths.
A dual-bag emergency intubation device was designed, comprising an inner small bag and an outer large bag. Both the inner small bag and the outer large bag are eccentrically thick-walled structures. By performing different inflation and deflation operations, the shape of the bags can be adjusted during intubation to adapt to different intubation paths, ensuring smooth intubation.
It enables smooth insertion during nasotracheal intubation, and can adjust the cuff shape when encountering difficulties to ensure successful intubation, provide an effective artificial airway, and maintain the patient's ventilation function.
Smart Images
Figure CN224307650U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of balloon tracheal technology, specifically relating to a double-balloon emergency intubation system. Background Technology
[0002] Emergency intubation, also known as emergency endotracheal intubation, is a first-aid technique used in emergency situations such as respiratory arrest, respiratory failure, or other emergencies. A specially designed endotracheal tube is inserted through the mouth or nose into the trachea to establish an artificial airway and ensure the patient's respiratory function. For successful intubation, a balloon-type endotracheal tube is often used. During insertion, the balloon is not inflated; once inserted, the balloon inflates and locks into place in the airway.
[0003] Conventional balloon endotracheal tubes only have two states: inflated and deflated. In the inflated state, the endotracheal tube can only be located in the center of the balloon, and the balloon outlet can only be located in the middle of the airway. Therefore, conventional balloon endotracheal tubes are not conducive to establishing nasal endotracheal intubation. Endotracheal intubation techniques are divided into oral and nasal routes, but in emergency situations and under limited medical conditions, oral endotracheal intubation is restricted, which may delay airway establishment. Based on the above reasons, this novel patent aims to provide a double-balloon endotracheal tube that facilitates more convenient nasal endotracheal intubation, creating favorable conditions for the treatment of emergency patients. Utility Model Content
[0004] The purpose of this invention is to provide a double-bag emergency intubation cannula to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A double-bag emergency intubation cannula includes a tube body, the lower middle section of which is provided with a double-bag system. The double-bag system includes an inner small bag and an outer large bag. The outer large bag has an eccentric wall thickness structure, and the wall thickness on one side of the outer large bag is greater than the wall thickness on the other side.
[0007] The tube body has an inner small bladder inflation channel and an outer large bladder inflation channel on its side wall; one end of the inner small bladder inflation channel opens inside the inner small bladder, and the other end of the inner small bladder inflation channel opens in the upper middle section of the tube body, and the upper end of the inner small bladder inflation channel is connected to the inner small bladder inflation line; one end of the outer large bladder inflation channel opens inside the outer large bladder, and the other end of the outer large bladder inflation channel opens in the upper middle section of the tube body, and the upper end of the outer large bladder inflation channel is connected to the outer large bladder inflation line.
[0008] Preferably, a machine end standard connector is provided at the upper end of the tube.
[0009] Preferably, the inner small sheath has an eccentric wall thickness structure, with one side of the inner small sheath having a greater wall thickness than the other side; the side with the smaller wall thickness of the inner small sheath is located on the same side as the side with the larger wall thickness of the outer large sheath, and the side with the larger wall thickness of the inner small sheath is located on the same side as the side with the smaller wall thickness of the outer large sheath.
[0010] Preferably, the end of the inner small bladder inflation line is provided with an inner small bladder inflation valve, and the end of the outer large bladder inflation line is provided with an outer large bladder inflation valve.
[0011] Preferably, the inner small bladder inflation valve is provided with an inner small bladder pressure indicator airbag, and the outer large bladder inflation valve is provided with an outer large bladder pressure indicator airbag.
[0012] Preferably, the large sheath and the inner small sheath are designed with an eccentric wall thickness structure, with the side with a larger wall thickness having a thickness of 0.3-0.5 mm and the side with a smaller wall thickness having a thickness of 0.1-0.15 mm.
[0013] Preferably, the lower end of the tube is a closed round head, and an air hole is provided on one side of the end of the tube.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] (1) The present invention provides a double-balloon emergency intubation tube. When emergency treatment is needed, if the patient's mouth opening is good, the tube can be inserted into the airway through the glottis. The inner small balloon is inflated and the outer large balloon is deflated. At this time, the two ballsoons are evenly inflated and the tube body is in the central position. During the inflation process of the inner small balloon, the outer large balloon and the inner small balloon fit together to form a uniform wall thickness, which can ensure that the ballsoons are evenly inflated and the tube body is in the center, avoiding the tube body opening end from fitting with the airway and causing air blockage.
[0016] (2) The present invention provides a double-cuff emergency intubation method. When oral intubation is difficult, nasal endotracheal intubation is used. When the endotracheal tube is difficult to pass through the glottis during intubation, the small cuff is deflated and the large cuff is inflated. At this time, one side of the double cuff bulges out, that is, the thin-walled side bulges out and the thick-walled side does not bulge out. The tube body is located in an eccentric position, and the bulging side is close to the pharyngeal wall, so that the tip of the endotracheal tube is raised closer to the epiglottis, which makes it easier for medical staff to perform endotracheal intubation to provide patients with an effective artificial airway, thereby helping to maintain the patient's ventilation function.
[0017] (3) The present invention provides a double-bag emergency intubation cannula, wherein the inner small bag inflation valve is provided with an inner small bag pressure indicator airbag, and the outer large bag inflation valve is provided with an outer large bag pressure indicator airbag; the inflation state of the inner small bag and the outer large bag can be determined by the inner small bag pressure indicator airbag and the outer large bag pressure indicator airbag. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a partial structural schematic diagram of the present invention;
[0020] Figure 3 This is a schematic diagram of the structure of the present invention when the inner small bladder is inflated and the outer large bladder is deflated.
[0021] Figure 4 This is a schematic diagram of the structure of the present invention when the inner small bladder is deflated and the outer large bladder is inflated.
[0022] Figure 5 For the present utility model in Figure 4 Usage diagram under the status;
[0023] In the diagram: 1. Tube body; 2. Round-headed closed end; 3. Air vent; 4. Standard connector at the machine end; 5. Double bladder; 6. Inner small bladder; 7. Outer large bladder; 8. Inner small bladder inflation channel; 9. Outer large bladder inflation channel; 10. Inner small bladder inflation line; 11. Inner small bladder inflation valve; 12. Inner small bladder pressure indicator bladder; 13. Outer large bladder inflation line; 14. Outer large bladder inflation valve; 15. Outer large bladder pressure indication bladder. Detailed Implementation
[0024] 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.
[0025] A double-bag emergency intubation cannula includes a cannula body 1. The lower end of the cannula body 1 is a round-headed closed end 2, and an air vent 3 is provided on one side of the end of the cannula body 1. This design can minimize the risk of airway damage at the end of the cannula body 1, while also preventing the air vent 3 from being blocked by the airway. The upper end of the cannula body 1 is provided with a standard machine end connector 4, which has a diameter of 15 mm.
[0026] A double-walled bladder 5 is located in the lower middle section of the tube body 1. The double-walled bladder 5 includes an inner small bladder 6 and an outer large bladder 7. Both the inner small bladder 6 and the outer large bladder 7 have eccentric wall thickness structures, meaning that the wall thickness on one side is greater than the wall thickness on the other side. The wall thickness on the side with the larger wall thickness is 0.3-0.5 mm, and the wall thickness on the side with the smaller wall thickness is 0.1-0.15 mm. The inner small bladder 6 is located inside the outer large bladder 7. The side of the inner small bladder 6 with the smaller wall thickness on the outer large bladder 7 is on the same side, and the larger wall thickness on the inner small bladder 6 is on the same side as the smaller wall thickness on the outer large bladder 7. When the inner small bladder 6 is inflated and the outer large bladder 7 is deflated, the walls of the inner small bladder 6 and the outer large bladder 7 are pressed tightly together, making the overall wall thickness of the double-walled bladder 5 approximately equal.
[0027] The inner small bladder inflation channel 8 and the outer large bladder inflation channel 9 are provided on the side wall of the tube body 1.
[0028] The lower end of the inner small bladder inflation channel 8 opens inside the inner small bladder 6, and the upper end of the inner small bladder inflation channel 8 opens into the upper middle section of the tube body 1. The inner small bladder 6 is inflated and deflated through the inner small bladder inflation channel 8. Furthermore, an inner small bladder inflation line 10 is connected to the upper opening of the inner small bladder inflation channel 8, and an inner small bladder inflation valve 11 is located at the upper end of the inner small bladder inflation line 10. The inner small bladder 6 can be inflated and deflated through the inner small bladder inflation valve 11. To indicate the internal air pressure status of the inner small bladder 6, an inner small bladder pressure indicator airbag 12 is provided on the inner small bladder inflation valve 11. The air pressure status of the inner small bladder pressure indicator airbag 12 indicates the air pressure status of the inner small bladder 6.
[0029] The lower end of the outer helical inflator channel 9 opens inside the outer helical inflator 7, and the upper end of the outer helical inflator channel 9 opens in the upper middle section of the tube body 1. The outer helical inflator 7 is inflated and deflated through the outer helical inflator channel 9. Furthermore, an outer helical inflator line 13 is connected to the upper opening of the outer helical inflator channel 9, and an outer helical inflator valve 14 is located at the upper end of the outer helical inflator line 13. The outer helical inflator 7 can be inflated and deflated through the outer helical inflator valve 14. To indicate the internal air pressure of the outer helical inflator 7, an outer helical inflator pressure indicator airbag 15 is provided on the outer helical inflator valve 14. The air pressure status of the outer helical inflator pressure indicator airbag 15 is the air pressure status of the outer helical inflator 7.
[0030] During intubation, if the patient can open their mouth well and the tube can pass through the glottis and be inserted into the airway, the inner small cuff 6 is inflated while the outer large cuff 7 is deflated. At this time, the outer large cuff 7 and the inner small cuff 6 fit together, forming a uniform wall thickness. This ensures that both cuffs 5 inflate evenly, with the tube body 1 centered, preventing the opening of the tube body 1 from sticking to the airway and causing air blockage. If intubation is difficult and the tube cannot pass through the glottis, the inner small cuff 6 is deflated while the outer large cuff 7 is inflated. At this time, the inner small cuff 6 is completely retracted, and the outer large cuff 7 has different wall thicknesses on both sides; the thinner wall side inflates, and the thicker wall side does not inflate. The inflated side is close to the pharyngeal wall, allowing the tube to be raised closer to the epiglottis, providing the patient with deeper oxygen supply.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A double-bag emergency intubation cannula, characterized in that: The tube includes a tube body, and the lower middle section of the tube body is provided with a double-layered bladder. The double-layered bladder includes an inner small bladder and an outer large bladder. The outer large bladder has an eccentric wall thickness structure, and the wall thickness on one side of the outer large bladder is greater than the wall thickness on the other side. The tube body has an inner small bladder inflation channel and an outer large bladder inflation channel on its side wall; one end of the inner small bladder inflation channel opens inside the inner small bladder, and the other end of the inner small bladder inflation channel opens in the upper middle section of the tube body, and the upper end of the inner small bladder inflation channel is connected to the inner small bladder inflation line; one end of the outer large bladder inflation channel opens inside the outer large bladder, and the other end of the outer large bladder inflation channel opens in the upper middle section of the tube body, and the upper end of the outer large bladder inflation channel is connected to the outer large bladder inflation line.
2. The double-bag emergency intubation cannula according to claim 1, characterized in that: The upper end of the tube is provided with a machine end standard connector.
3. The double-bag emergency intubation cannula according to claim 1, characterized in that: The inner small sheath has an eccentric wall thickness structure, with one side of the inner small sheath having a greater wall thickness than the other side; the side with the smaller wall thickness of the inner small sheath is located on the same side as the side with the larger wall thickness of the outer large sheath, and the side with the larger wall thickness of the inner small sheath is located on the same side as the side with the smaller wall thickness of the outer large sheath.
4. The double-bag emergency intubation cannula according to claim 1, characterized in that: The inner small bladder inflation line is provided with an inner small bladder inflation valve at its end, and the outer large bladder inflation line is provided with an outer large bladder inflation valve at its end.
5. The double-bag emergency intubation cannula according to claim 4, characterized in that: The inner small bladder inflation valve is equipped with an inner small bladder pressure indicator airbag, and the outer large bladder inflation valve is equipped with an outer large bladder pressure indicator airbag.
6. The double-bag emergency intubation cannula according to claim 1, characterized in that: The large inner sheath and the inner small inner sheath are designed with an eccentric wall thickness structure, with the side with a larger wall thickness having a thickness of 0.3-0.5 mm and the side with a smaller wall thickness having a thickness of 0.1-0.15 mm.
7. The double-bag emergency intubation cannula according to claim 1, characterized in that: The lower end of the tube is a closed round head, and an air hole is provided on one side of the end of the tube.