Novel nasopharyngeal airway with anti-dislodgement

Abstract

The utility model discloses a novel anti -slip nasopharyngeal airway, including flexible double -layer air pipe and nasal cavity air bag, and the inflatable cavity is formed between the outer layer and the inner layer of air pipe, and the center of inner layer is the air pipe line that penetrates before and after, and the air pipe is completely flattened and is in flat shape when not being inflated, and is circular pipe shape when being full of air, and the front end surface of air pipe is equipped with elastic sleeve, and elastic sleeve sleeve connects air inlet joint, and nasal cavity air bag movable sleeve connects the position of air pipe outside near air inlet joint. The utility model adopts the inflatable double -layer air pipe that has the set shape after being full of air, and designs the auxiliary guide rod of specific shape to guide the double -layer air pipe into the nasopharynx of patient, and the probability of rubbing contact with the nasal mucosa of patient is smaller when guiding into the nasopharynx of patient, and the occurrence of the damage hemorrhage condition is avoided.

Description

Technical Field

[0001] This utility model relates to the field of nasopharyngeal airway technology, specifically to a novel anti-slip nasopharyngeal airway. Background Technology

[0002] Patients undergoing painless gastroscopy and colonoscopy, especially obese patients, are prone to upper airway obstruction symptoms after medication administration, such as posterior displacement of the tongue, leading to hypoxemia, which seriously threatens their lives. In such cases, inserting a Wechsler nasopharyngeal airway can relieve the upper airway obstruction and connect to the anesthesia machine's threaded tubing for supraglottic oxygen supply, greatly alleviating hypoxemia caused by upper airway obstruction. During painless gastroscopy and colonoscopy, the patient is in a lateral decubitus position. Insertion of a nasopharyngeal airway in this position often results in slippage and dislodgement, requiring repeated correction by the anesthesiologist, which can easily lead to nasal mucosal damage and bleeding. Similarly, in ERCP, the patient is in a prone position. After insertion of a nasopharyngeal airway and connection to the anesthesia machine's threaded tubing, the nasopharyngeal airway is prone to slippage and dislodgement due to gravity, requiring repeated correction. In addition, the conventional nasopharyngeal airway is a relatively soft trachea. The larger the inner diameter of the trachea, the better the ventilation effect, but at the same time, the more likely the trachea is to rub against the nasal mucosa when inserted, causing damage and bleeding. Utility Model Content

[0003] 1. Technical problem to be solved: Nasopharyngeal airways are prone to dislodgement, requiring repeated correction of their position, and friction during insertion can damage the nasal mucosa, causing injury and bleeding.

[0004] To address the aforementioned technical problems, this utility model provides a novel anti-slip nasopharyngeal airway.

[0005] 2. Technical Solution:

[0006] A novel anti-slip nasopharyngeal airway includes a flexible double-layered air tube and a nasal cuff. An inflation chamber is formed between the outer and inner layers of the air tube. The center of the inner layer is a through-flow air tube. When the air tube is not inflated, it is flattened radially. When the air tube is inflated, it is cylindrical. An elastic sleeve is provided on the front end of the air tube, which is connected to an air inlet connector. The nasal cuff is movably fitted on the outside of the air tube near the air inlet connector. The nasal cuff is provided with a first inflation tube connected to a first inflation valve. A second inflation tube connected to the inflation chamber is provided on the side of the nasal cuff near the air inlet connector, and the second inflation tube is connected to a second inflation valve.

[0007] Furthermore, a nasopharyngeal air sac is provided on the outer side of the air tube near its rear end face. The nasopharyngeal air sac is connected to the inflation chamber and is made of an elastic and expandable material.

[0008] Furthermore, the ventilation tube is inserted into the patient's nasopharynx via an auxiliary guide rod, which includes a positioning ring, a flexible rod, and a push handle, with the positioning ring and push handle respectively located at both ends of the flexible rod.

[0009] Furthermore, the inflation chamber is provided with an annular elastic rope. The elastic rope is close to the rear end face of the vent pipe. When the vent pipe is not inflated, the elastic rope constricts the rear end outlet of the vent pipe and is locked into the outer annular groove of the positioning ring. When the inflation chamber is filled with air, the elastic rope is stretched open and the rear end outlet is opened.

[0010] Furthermore, the air inlet connector is connected to the air outlet connector on the oxygen supply pipe, and the oxygen supply pipe is connected to the oxygen supply equipment.

[0011] Furthermore, the double-layered ventilation tube is made of medical-grade rubber material.

[0012] Preferably, the outer side of the vent pipe is uniformly marked with length markings.

[0013] 3. Beneficial effects:

[0014] This novel anti-slip nasopharyngeal airway abandons the traditional flexible tubing and instead employs an inflatable double-layered airway that takes on a predetermined shape when fully inflated. A specially shaped auxiliary guide is designed to guide the double-layered airway into the patient's nasopharynx. Because the double-layered airway is flat when deflated and does not have a specific inner diameter, its radial dimension is smaller, reducing the probability of friction and contact with the patient's nasal mucosa during insertion and preventing injury and bleeding. Furthermore, airbags are placed in both the nasopharynx and nasal cavity to prevent the double-layered airway from easily dislodging due to patient positioning, making it more stable. The overall structure is simple, ingenious, and highly practical. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the nasopharyngeal airway of this utility model when it is filled with air;

[0016] Figure 2 This is a schematic diagram of the auxiliary guide rod of this utility model;

[0017] Figure 3 This is a side view of the nasopharyngeal airway of this utility model. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] As attached Figure 1 To be continued Figure 3 As shown,

[0020] Example 1:

[0021] A novel anti-slip nasopharyngeal airway includes a flexible double-layered air tube 1 and a nasal cuff 2. The double-layered air tube 1 is made of medical rubber material. An inflation chamber 3 is formed between the outer and inner layers of the air tube 1. The center of the inner layer is a through-flow airway. When the air tube 1 is not inflated, it is flattened radially. When the air tube 1 is inflated, it is cylindrical. An elastic sleeve 4 is provided on the front end of the air tube 1. The elastic sleeve 4 is sleeved on the air inlet connector 5. The nasal cuff 2 is movably sleeved on the outside of the air tube 1 near the air inlet connector 5. The nasal cuff 2 is provided with a first inflation tube 6, which is connected to a first inflation valve 7. A second inflation tube 8 is provided on the side of the nasal cuff 2 near the air inlet connector 5, which is connected to the inflation chamber 3. The second inflation tube 8 is connected to a second inflation valve 9.

[0022] Example 2:

[0023] A nasopharyngeal air sac 10 is provided on the outer side of the airway 1 near its rear end. The nasopharyngeal air sac 10 is connected to the inflation chamber 3 and is made of an elastic, expandable material. Preferably, the outer side of the airway 1 is uniformly marked with length indicators.

[0024] It should be noted that, since the ventilation tube 1 itself is flexible, it cannot be directly inserted into the patient's nasopharynx when not inflated, just like existing flexible tubing. In this embodiment, the ventilation tube 1 needs to be inserted into the patient's nasopharynx through an auxiliary guide rod 11. The auxiliary guide rod 11 includes a positioning ring 110, a flexible rod 111, and a push handle 112. The positioning ring 110 and the push handle 112 are respectively located at both ends of the flexible rod 111.

[0025] Example 3:

[0026] An annular elastic rope 12 is provided inside the inflation chamber 3. The elastic rope 12 is close to the rear end face of the vent pipe 1. When the vent pipe 1 is not inflated, the elastic rope 12 tightens the rear end air outlet of the vent pipe 1 and is inserted into the outer annular groove of the positioning ring 110. When the inflation chamber 3 is filled with air, the elastic rope 12 is stretched open and the rear end air outlet is opened.

[0027] Example 4:

[0028] The air inlet connector 5 connects to the air outlet connector on the oxygen supply pipe, which in turn connects to the oxygen supply equipment.

[0029] When using the anti-slip nasopharyngeal airway of this embodiment, first remove the air inlet connector 5, insert the auxiliary guide rod 11 into the uninflated double-layer airway tube 1 from the air inlet end, and spread the elastic rope 12. The elastic rope 12 tightens the air outlet and is locked in the annular groove of the positioning ring 110. At this time, pushing and pulling the auxiliary guide rod 11 will move the air outlet of the double-layer airway tube 1 together with it. First, adjust the state of the double-layer airway tube 1, and then insert the auxiliary guide rod 11 from the patient's nasal cavity and slowly extend it into the patient's nasopharynx. After reaching the predetermined depth, inflate from the second airway. Valve 9 begins to inflate, restoring the double-layered air tube 1 to its cylindrical shape and opening the elastic rope 12. At this point, the auxiliary guide rod 11 can be removed. When the double-layered air tube 1 is fully inflated, if inflation continues, the gas will cause the nasopharyngeal airbag 10 to continue to expand, thereby finding a suitable support force to prevent the double-layered air tube 1 from being pulled out and falling off. To further reduce the risk of falling off, the nasal airbag 2 is moved into the nasal cavity and inflated. The inflated nasal airbag 2 and the inflated double-layered air tube 1 have frictional force generated by compression, preventing them from falling off.

[0030] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the present invention. Anyone skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of protection of the claims of this application.

Claims

1. A novel anti-slip nasopharyngeal airway, characterized in that, The device includes a flexible double-layered air tube and a nasal cuff. An inflation chamber is formed between the outer and inner layers of the air tube. The center of the inner layer is a through-tube that runs from front to back. When the air tube is not inflated, it is flat and completely compressed radially. When the air tube is inflated, it is cylindrical. An elastic sleeve is provided on the front end of the air tube, which is connected to the air inlet connector. The nasal cuff is movably fitted on the outside of the air tube near the air inlet connector. The nasal cuff is provided with a first inflation tube, which is connected to a first inflation valve. A second inflation tube, which is connected to a second inflation valve, is provided on the side of the nasal cuff near the air inlet connector.

2. The novel anti-slip nasopharyngeal airway according to claim 1, characterized in that, The nasopharyngeal air sac is located on the outer side of the airway near its rear end. The nasopharyngeal air sac is connected to the inflation chamber and is made of an elastic and expandable material.

3. A novel anti-slip nasopharyngeal airway according to claim 1 or 2, characterized in that, The ventilation tube is inserted into the patient's nasopharynx via an auxiliary guide rod, which includes a positioning ring, a flexible rod, and a push handle. The positioning ring and the push handle are respectively located at both ends of the flexible rod.

4. A novel anti-slip nasopharyngeal airway according to claim 3, characterized in that, The inflation chamber is equipped with an annular elastic rope. The elastic rope is close to the rear end face of the vent tube. When the vent tube is not inflated, the elastic rope constricts the rear air outlet of the vent tube and is locked into the outer annular groove of the positioning ring. When the inflation chamber is filled with air, the elastic rope is stretched open and the rear air outlet is opened.

5. A novel anti-slip nasopharyngeal airway according to claim 1, characterized in that, The air inlet connector is connected to the air outlet connector on the oxygen supply pipe, and the oxygen supply pipe is connected to the oxygen supply equipment.

6. A novel anti-slip nasopharyngeal airway according to claim 1, characterized in that, The double-layered ventilation tube is made of medical-grade rubber material.

7. A novel anti-slip nasopharyngeal airway according to claim 1, characterized in that, The vent tube has length markings evenly distributed on its outer side.

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