Oral and nasopharyngeal airway

Abstract

The utility model provides a mouth and nasopharynx airway which comprises a ventilation supporting tube and a mouth bite with a cavity, and the ventilation supporting tube is temporarily embedded and fixed in the mouth bite with the cavity. The whole body can be used as an oropharyngeal airway, and the ventilation supporting tube can be taken out from the mouth bite with the cavity and can be used as a nasopharyngeal airway; the ventilation supporting tube is provided with the respiration monitoring cavity and the oxygen supply cavity, can be connected with oxygen for inhalation during use, is connected with a carbon dioxide monitor for end-tidal carbon dioxide monitoring, and is simple in structure, low in cost, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to oral and nasopharyngeal airways. Background Art

[0002] Both oropharyngeal airways and nasopharyngeal airways are auxiliary devices used to maintain upper respiratory tract patency. Each has its own advantages and disadvantages. Some patients can use both, while some patients can only use one, which brings inconvenience to clinical backup products.

[0003] At the same time, it is more difficult to inhale oxygen through the oropharyngeal airway and nasopharyngeal airway, and there is a lack of dedicated oxygen connection equipment; it is also difficult to perform respiratory monitoring, which poses risks to patients.

[0004] At the same time, it is difficult to use fiber bronchoscope to guide intubation for patients with clinical difficult airway. There is no special guiding tool, which causes trouble for unskilled doctors and brings risks to patients.

[0005] There is an urgent need in clinical practice for a shared oral / nasopharyngeal airway that can guide a fiber bronchoscope to reduce the difficulty of difficult endotracheal intubation and improve clinical patient safety. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the present invention provides an oral and nasopharyngeal airway, which includes a mouthpiece with a cavity and a J-shaped soft ventilation support tube.

[0007] The cavity-bearing mouthpiece is provided with an instrument operation cavity, and a tube recess for temporarily embedding and fixing a ventilation support tube is provided on the side of the instrument operation cavity. The cavity-bearing mouthpiece is provided with tooth grooves on the sides corresponding to the upper and lower incisors.

[0008] The outer diameter of the ventilation support tube is adapted to the tube recess and is embedded in the tube recess. The head and tail of the ventilation support tube both extend out of the tube recess with a cavity mouth, and the length of the ventilation support tube is greater than 10 cm.

[0009] A carbon dioxide collection cavity is provided on the side wall of the ventilation support tube, and a carbon dioxide collection port is provided at the tail end thereof, which is sealed and connected to the ventilation support tube.

[0010] The ventilation support tube is provided with a crack or tear line on the side wall along the long axis, and the crack or tear line extends from the tube opening to the tube tail.

[0011] The tail end of the ventilation support tube is sleeved or plugged into a capping tube, which is adapted to the thickness of the ventilation support tube. The side wall of the recessed outlet of the ventilation support tube is connected to an oxygen supply tube, or the capping tube is connected to an oxygen supply tube. A hollow area is provided on the side wall of the tail end of the ventilation support tube or the side wall of the capping tube.

[0012] The sealing tube moves along the long axis of the tail end of the ventilation support tube, changing the length of the sealing tube sleeved or plugged into the tail end of the ventilation support tube, thereby changing the open area of the hollow region.

[0013] The long axis of the concave tube is inclined toward the instrument operation cavity, forming an angle of 10-15 degrees.

[0014] Beneficial effects of the utility model:

[0015] 1. The oropharyngeal airway and nasopharyngeal airway are integrated, and can be used as an oropharyngeal airway or a nasopharyngeal airway to avoid confusion when the product is in standby mode;

[0016] 2. It can facilitate oxygen inhalation and respiratory monitoring to improve patient safety;

[0017] 3. It can be placed in the oropharynx or nasopharynx to form a channel, reducing the difficulty of intubation guided by a fiber bronchoscope. After intubation is completed, the guiding channel can be smoothly removed, so that the endotracheal tube can be placed in the airway to complete intubation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the first embodiment of the cavity mouthpiece of the utility model;

[0020] Figure 3 This is a structural diagram of the first embodiment of the ventilation support tube of the utility model, wherein a is a schematic diagram of the integrated implementation structure of the hollow area and the ventilation support tube, and b is a schematic diagram of the integrated implementation structure of the hollow area and the covering tube;

[0021] Figure 4 This is a structural diagram of the second embodiment of the ventilation support tube of the utility model;

[0022] Figure 5 This is a structural diagram of the second embodiment of the cavity-bearing mouthpiece of the present invention; wherein line a is the central axis of the tube depression; line b is the central axis of the instrument operation cavity;

[0023] In the figure,

[0024] 1. Mouth with cavity; 11. Instrument operation cavity; 12. Tube recess; 13. Tooth groove; a. Centerline of tube recess; b. Centerline of instrument operation cavity;

[0025] 2. Ventilation support tube; 21. Hollow area; 22. Oxygen supply tube; 23. Carbon dioxide collection cavity; 24. Carbon dioxide collection port; 25. Tear line;

[0026] 3. Cap the tube. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention and make the above-mentioned features, purposes and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the embodiments. The embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] like Figure 1 and 2 As shown, the oral and nasopharyngeal airway of the present invention includes a cavity mouthpiece 1 and a J-shaped soft ventilation support tube 2. The cavity mouthpiece 1 is provided with an instrument operation cavity 11, and a tube recess 12 for temporarily embedding and fixing the ventilation support tube 2 is provided on the side of the instrument operation cavity 11. The cavity mouthpiece 1 is provided with a tooth groove 13 on the side corresponding to the upper and lower incisors for the upper and lower teeth to occlude and prevent the cavity mouthpiece 1 from slipping. The outer diameter of the ventilation support tube 2 is adapted to the tube recess 12, and it is temporarily embedded in the tube recess 12, and the head and tail of the ventilation support tube 2 both extend out of the tube recess 12 of the cavity mouthpiece 1. When in use, the length of the head of the ventilation support tube 2 extending from the cavity mouthpiece 1 can be adjusted by holding the tail of the ventilation support tube 2 extending from the cavity mouthpiece 1, which is suitable for patients of different heights. The length of the ventilation support tube 2 is greater than 10 cm, ensuring that it is greater than the length of the child's oropharynx or nasopharynx to ensure the use effect. The ventilation support tube 2 has different models. For children, it is thin and short; for adults, it is thicker and longer.

[0029] When the present invention is used as an oropharyngeal airway, the cavity mouthpiece 1 is placed in the patient's oral cavity. The two tooth grooves 13 provided on the side of the cavity mouthpiece 1 correspond to the positions of the patient's upper and lower incisors, respectively, and play a role in fixing and positioning the cavity mouthpiece 1. The tooth groove 13 is formed by two protruding structures provided on the side of the cavity mouthpiece 1. When in use, the patient's upper and lower incisors are engaged and held in the tooth groove 13, preventing the cavity mouthpiece 1 from falling out of the oral cavity or sliding into the deep part of the oral cavity. The provided instrument operation cavity 11 can be used as a sputum suction channel, and is used as a gastroscope, TEE or bronchoscope insertion channel in clinical applications to avoid the upper and lower teeth from biting expensive instruments, and also protect the upper and lower teeth. The ventilation support tube 2 is temporarily embedded and fixed in the tube recess 12 on the side of the instrument operation cavity 11, with the tail end extending and exposed at the bottom of the cavity mouthpiece 1. The ventilation support tube 2 can be held by the tail end to adjust the ventilation support tube 2 to advance or retreat, changing its insertion depth into the throat cavity to ensure ventilation and reduce irritation of the throat by the tip end. The ventilation support tube 2 can be adjusted by rotating it to adjust its opening relative to the glottis. Its J-shaped shape adapts to the curvature of the throat.

[0030] like Figure 3As shown, when the present invention is used as a nasopharyngeal airway, the ventilation support tube 2 is removed and inserted into the nasopharyngeal airway through the nose, extending beyond the tongue obstruction. This establishes a nasal breathing pathway and relieves the patient's upper airway obstruction. Patients are more likely to tolerate the nasopharyngeal airway, but caution should be exercised regarding potential damage to the nasal cavity and skull base. It should be used with caution or contraindicated in patients with deviated nasal septum or skull base injury.

[0031] like Figure 1 and Figure 3 As shown, the ventilation support tube 2 has a carbon dioxide collection chamber 23 on its sidewall, and a carbon dioxide collection port 24 is provided at the rear of the ventilation support tube 2, which is sealed and connected to the ventilation support tube 2. The carbon dioxide collection port 24 can be connected to a monitor to collect the patient's respiratory gas as they breathe, monitor the patient's breathing status in real time, and promptly detect and address any abnormal breathing conditions.

[0032] like Figure 4 As shown, the ventilation support tube 2 is provided with a slit or tear line 25 on its sidewall along its long axis, extending from the tube opening to the tube tail. This is intended to facilitate the removal of the ventilation support tube 2 from the outside of the fiberoptic bronchoscope during difficult endotracheal intubation guided by a fiberoptic bronchoscope. Once the fiberoptic bronchoscope is inserted into the airway, the ventilation support tube 2 is withdrawn, opening the slit or tear line 25 to allow the lateral side of the ventilation support tube 2 to be opened. This allows the endotracheal tube, looped around the tail of the fiberoptic bronchoscope, to be placed into the patient's airway, completing the intubation procedure.

[0033] like Figure 3 As shown, the tail end of the ventilation support tube 2 is sleeved or plugged with a sealing tube 3, and the thickness of the sealing tube 3 is adapted to the ventilation support tube 2. The side wall of the outlet recess 12 of the ventilation support tube 2 is connected to the oxygen supply tube 22, or the sealing tube 3 is connected to the oxygen supply tube 22; the side wall of the tail end of the ventilation support tube 2 or the side wall of the sealing tube 3 is provided with a hollow area 21. Oxygen is supplied to the patient's breathing through the oxygen supply tube 2 to increase the oxygen concentration of the inhaled gas. By setting the hollow area 12, an additional breathing channel is provided for the patient to avoid airway barotrauma caused by high-pressure oxygen when the breathing channel is only the ventilation support tube 2: when the patient inhales, the outside gas can enter the patient's airway through the hollow area 21; when the patient exhales, the exhaled gas can be discharged to the outside through the hollow area of the ventilation support tube 2. The area of the hollow area 21 should be larger than 40mm 2 , preferably 50-60mm 2 When the ventilation support tube 2 is the patient's only breathing passage, it provides sufficient passage for breathing gas to avoid excessive airway resistance that affects gas exchange.

[0034] Further, such as Figure 3As shown, the sealing tube 3 moves along the long axis of the tail end of the ventilation support tube 2, changing the length of the sealing tube 3 sleeved or plugged into the tail end of the ventilation support tube 2, changing the coverage area of the hollow area 21 by the closed tube wall, and thus changing the effective connection area between the lumen of the ventilation support tube 2 and the outside world through the hollow area 21. Adjusting the open area of the hollow area 21 can change the concentration of oxygen inhaled by the patient, specifically: when the area of the hollow area 21 is large, more oxygen is lost through the hollow area 21, and the oxygen concentration is reduced; when the area of the hollow area 21 is small, less oxygen is lost through the hollow area 21, and the oxygen concentration is increased. However, during specific implementation, it should be adjusted according to the patient's condition and the degree of airway patency to avoid the hollow area 21 being too small to hinder the gas exchange when the patient breathes. To ensure safety, the effective connection area between the lumen of the ventilation support tube 2 and the outside world through the hollow area 21 should be greater than 30mm 2 .

[0035] like Figure 3 As shown, the left picture shows that the hollow area 21 is set on the side wall of the ventilation support tube 2, and the sealing tube 3 is sleeved on the outer wall of the ventilation support tube 2; the right picture shows that the hollow area 21 is set on the side wall of the sealing tube 3, and the sealing tube 3 is sleeved on the outer wall of the ventilation support tube 2; both can change the area of the hollow area 21 that effectively connects the ventilation support tube 2 with the outside world by adjusting the length of the tail end of the sealing tube 3 sleeved on the ventilation support tube 2, thereby adjusting the inhaled oxygen concentration.

[0036] like Figure 5 As shown, the tube recess 12 is set as a groove or a tube cavity parallel to the instrument operation cavity 11. Regardless of whether it is set as a groove or a tube cavity, it should be tightly fitted into the ventilation support tube 2. However, in specific implementation, it is preferably set as a groove to facilitate the insertion or removal of the ventilation support tube 2. The head end of the tube recess 12 should be slightly deflected toward the center of the cavity mouthpiece 1. Figure 5 In the figure, line a represents the central axis of the tube recess, and line b represents the central axis of the instrument operating cavity. The two lie in the same plane, forming an angle of 5-30°, with an optimal angle of 10-15°. Once the ventilation support tube 2 is properly positioned within the tube recess 12, the lumen at the tip of the tube 2 is positioned close to the central axis, pointing toward the patient's glottis, facilitating ventilation.

[0037] The above embodiments are merely illustrative of the principles and effects of this patent application and are not intended to limit this patent application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this patent application. Therefore, all equivalent modifications or alterations made by persons of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this patent application shall be covered by the claims of this patent application.

Claims

1. Oral and nasopharyngeal airway, characterized in that, It comprises a mouthpiece with a cavity (1) and a J-shaped soft ventilation support tube (2); The cavity-bearing mouthpiece (1) is provided with an instrument operation cavity (11), and a tube recess (12) for temporarily embedding and fixing the ventilation support tube (2) is provided on the side of the instrument operation cavity (11); the cavity-bearing mouthpiece (1) is provided with tooth grooves (13) on the side surfaces corresponding to the upper and lower incisors; The outer diameter of the ventilation support tube (2) is adapted to the tube recess (12) and is embedded in the tube recess (12). The head and tail of the ventilation support tube (2) both extend outside the tube recess (12) of the cavity-bearing mouthpiece (1); and the length of the ventilation support tube (2) is greater than 10 cm.

2. The oral and nasopharyngeal airway according to claim 1, characterized in that: A carbon dioxide collection chamber (23) is provided on the side wall of the ventilation support tube (2), and a carbon dioxide collection port (24) is provided at the tail end of the ventilation support tube (2) in sealed communication.

3. The oral and nasopharyngeal airway according to claim 1, characterized in that: The ventilation support tube (2) is provided with a crack or tear line (25) on the side wall along the long axis, and the crack or tear line (25) extends from the tube opening to the tube tail.

4. The oral and nasopharyngeal airway according to claim 1, characterized in that: The tail end of the ventilation support tube (2) is sleeved or plugged with a sealing tube (3), and the thickness of the sealing tube (3) is adapted to that of the ventilation support tube (2); the side wall of the outlet recess (12) of the ventilation support tube (2) is connected to the oxygen supply tube (22), or the sealing tube (3) is connected to the oxygen supply tube (22); the side wall of the tail end of the ventilation support tube (2) or the side wall of the sealing tube (3) is provided with a hollow area (21).

5. The oral and nasopharyngeal airway according to claim 4, characterized in that: The sealing tube (3) moves along the long axis of the rear end of the ventilation support tube (2), changing the length of the sealing tube (3) sleeved or plugged into the rear end of the ventilation support tube (2), thereby changing the open area of the hollow region (21).

6. The oral and nasopharyngeal airway according to claim 1, characterized in that: The long axis of the tube recess (12) is inclined toward the instrument operation cavity (11), forming an angle of 10-15 degrees.

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