A multi-lumen oropharyngeal airway device

Abstract

This invention provides a multi-channel oropharyngeal ventilation device, relating to the field of ventilation device technology, including an installation mechanism. The installation mechanism includes an inner groove and a fixing rod. Two sets of inner grooves are symmetrically arranged at both ends of the rear side of the main body of the installation mechanism, and the inner grooves are connected to the fixing groove at the rear end of the main body. In use, a gastroscopy tube or gastrointestinal delivery tube can be inserted into the patient's throat through the insertion hole and the connecting hole for examination. After use, by rotating the rotating component, the insertion hole can be connected to the unused connecting hole. This design reduces the risk of infection of the connecting hole due to repeated use, solving the problem of imperfect insertion channel structure in oropharyngeal ventilation devices. During use, because gastroscopy or gastric tube delivery is frequently required, the ventilation tube is frequently exposed to air, and its interior is frequently rubbed against medical equipment, increasing the risk of contamination of the ventilation device.

Description

Technical Field

[0001] This invention relates to the field of ventilation device technology, and in particular to a multi-channel oropharyngeal ventilation device. Background Technology

[0002] Patients lose consciousness after surgery, making it very inconvenient to perform gastroscopy or gastric tube delivery. By inserting a ventilation device into the patient's mouth, it is possible to ensure the patient's breathing while facilitating medical procedures such as gastroscopy or gastric tube delivery.

[0003] For example, application number CN201910912980.5 relates to a multi-channel oropharyngeal ventilation device for anesthesiology, belonging to the technical field of multi-channel oropharyngeal ventilation devices, and solving the problems of gastric tube insertion, sputum suction, and air drying. A multi-channel oropharyngeal ventilation device for anesthesiology includes a mask, an oral cavity insertion mechanism installed on the inner side of the mask, a bite block installed on the outer surface of the oral cavity insertion mechanism, fixing straps installed on both sides of the mask, a connecting mechanism installed at one end of each fixing strap, an air adjustment mechanism installed on the inner side of the oral cavity insertion mechanism, a tube insertion mechanism installed on one side of the air adjustment mechanism, an insertion port installed on the outer surface of one end of the oral cavity insertion mechanism, a fixing port installed on one side of the insertion port, and a flexible tube installed on the outer surface of the other end of the oral cavity insertion mechanism. This invention improves the device, making it convenient for operators to perform operations such as tube insertion and air humidification.

[0004] However, the existing oropharyngeal ventilation devices have an imperfect tooth fixation structure. Since the tooth fixation structure is integrated with the ventilation device, it is inconvenient to disassemble and clean the tooth fixation structure. This easily leads to bacterial growth in the tooth fixation structure due to prolonged lack of replacement. In addition, the intubation channel structure of the existing oropharyngeal ventilation devices is imperfect. During use, because gastroscopy or gastric tube delivery is frequently required, the ventilation tube is frequently exposed to the air, and its interior is frequently rubbed against the medical equipment, which increases the risk of contamination of the ventilation device. Summary of the Invention

[0005] In view of this, the present invention provides a multi-channel oropharyngeal ventilation device with a ventilation component, which can promptly close the ventilation tube after performing gastroscopy or gastric tube delivery on a patient and activate a new ventilation tube for the next gastroscopy or gastric tube delivery, thus reducing the risk of contamination of the ventilation tube due to repeated use.

[0006] This invention provides a multi-channel oropharyngeal ventilation device with the following purpose and effect: A mounting mechanism; the mounting mechanism includes an inner groove and fixing rods. Two sets of inner grooves are symmetrically arranged at both ends of the rear side of the main body of the mounting mechanism, and the inner grooves are connected to the fixing groove at the rear end of the main body. Two sets of fixing rods are provided, and the fixing rods are slidably installed in the inner grooves via elastic elements. Each fixing rod has a circular rod at both ends, which is located in the fixing groove. The mounting mechanism has two sets of external connecting parts, and the movable plates of the external connecting parts are located at both ends of the rear side of the main body. Rectangular blocks on the outer side of the movable plates are inserted into the fixing grooves and are movable... The plate has circular rods inserted into the holes at both ends. The mounting mechanism has two sets of connecting components, and the mounting rods of the connecting components are located on both sides of the main body. The guide plates on the mounting rods are slidably installed in the side grooves at both ends of the main body through elastic elements. The mounting mechanism has a ventilation component, and the rotating part and the ventilation pipe of the ventilation component are inserted into the circular through hole at the inner end of the main body. The rectangular blocks at both ends of the ventilation pipe are engaged with the rectangular grooves in the circular through hole inside the main body. The fixing bracket on the rotating part is located on the front side of the main body, and the two ends of the fixing bracket are engaged with the connecting grooves on the outside of the main body. The two sides of the fixing bracket are penetrated by the positioning pins in the connecting grooves.

[0007] Furthermore, the installation mechanism also includes: a main body, side grooves, and fixing grooves; a circular through hole is provided in the middle of the main body; two sets of side grooves are provided, and the side grooves penetrate both sides of the main body; two sets of fixing grooves are provided, and the fixing grooves are symmetrically arranged at the upper and lower ends of the rear side of the main body.

[0008] Furthermore, the installation mechanism also includes: a connecting groove and a positioning pin; there are two sets of connecting grooves, and the connecting grooves are located at both ends of the front side of the main body; the positioning pins are located at both ends of the front side of the main body, and the rear end of the positioning pins is inserted into the connecting groove.

[0009] Furthermore, the external part includes: a movable plate, a meshing groove, and a socket; the movable plate is an arc-shaped plate structure, and a rectangular protrusion structure is provided at the bottom of the movable plate; the meshing groove is located at the rear end of the movable plate; the socket is located in the rectangular protrusion structure at the bottom of the movable plate, and the socket penetrates through the rectangular protrusion structure.

[0010] Furthermore, the connecting assembly includes: a mounting rod and a guide plate; the mounting rod has a rectangular groove inside; the guide plate is located on the outside of the mounting rod.

[0011] Furthermore, the connecting assembly also includes: a flipping rod and an end slot; the flipping rod is rotatably mounted in a rectangular slot within the mounting rod via a connecting shaft; the end slot is located at the inner rear end of the flipping rod.

[0012] Furthermore, the ventilation assembly includes: a rotating component and an air inlet; the rear end of the rotating component is provided with triangular protrusions; the air inlet is annularly opened at the inner end of the rotating component, and the air inlet passes through both ends of the rotating component, and an air filter is provided inside the air inlet.

[0013] Furthermore, the ventilation assembly also includes: a plug hole and a fixing bracket; the plug hole is opened at the inner end of the rotating part and passes through both ends of the rotating part; the fixing bracket is sleeved on the outer end of the rotating part and is movably connected to the rotating part through an elastic element.

[0014] Furthermore, the ventilation assembly also includes: a ventilation pipe and ventilation holes; the ventilation pipe is located on the rear side of the rotating component, and the outer front end of the ventilation pipe has a row of triangular protrusions, which engage with the triangular protrusions on the rear side of the rotating component; the outer rear end of the ventilation pipe has a row of circular through holes; there are two sets of ventilation holes, which are located at both ends inside the ventilation pipe and are connected to the circular through holes on the rear side of the ventilation pipe, and the ventilation holes are connected to the air inlet.

[0015] Furthermore, the ventilation assembly also includes: an inner tube and a connecting hole; the inner tube is located at the inner end of the ventilation pipe and is situated between two sets of ventilation holes; there are two sets of connecting holes, which are opened inside the inner tube, penetrate both sides of the inner tube, and the bottom connecting hole is connected to the insertion hole.

[0016] Beneficial effects

[0017] 1. In this invention, an installation mechanism and an external connection are provided. Two sets of inner grooves and fixing grooves are provided at the rear end of the main body. The fixing rod is slidably installed into the inner groove through an elastic element. A movable plate for fixing the patient's teeth is provided on the rear side of the main body. The rectangular block at the bottom of the movable plate is inserted into the fixing groove, and the round rods at both ends of the fixing rod are inserted into the insertion holes on both sides of the movable plate, thereby fixing the movable plate on the rear side of the main body. When it is necessary to replace and clean the movable plate, the fixing rod is pulled to both sides, so that the round rods at both ends of the fixing rod are moved out of the insertion holes, and the fixing rod loses its limitation on the movable plate. In this way, the movable plate can be quickly removed from the patient's mouth for replacement and cleaning.

[0018] 2. In this invention, an installation mechanism and a ventilation assembly are provided. The ventilation tube is inserted into the circular through hole inside the main body. The rotating component is installed to the front end of the main body through a fixing bracket, and the triangular structure at the rear end of the rotating component engages with the triangular structure at the front end of the ventilation tube. Air inlets are evenly spaced on the rotating component, connecting with the ventilation holes inside the ventilation tube. An insertion hole is provided at the inner end of the rotating component, connecting with the connecting hole on the bottom side of the inner tube. During use, a gastroscopy tube or gastrointestinal delivery tube can be inserted into the patient's throat through the insertion hole and the connecting hole for examination. After use, by rotating the rotating component, the insertion hole can be connected to the unused connecting hole. This design reduces the risk of infection of the connecting hole due to repeated use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram:

[0022] Figure 1 A three-dimensional structural schematic diagram according to an embodiment of the present invention is shown;

[0023] Figure 2 A schematic diagram of the rear view structure according to an embodiment of the present invention is shown;

[0024] Figure 3 An exploded structural diagram according to an embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram of a partial connection structure according to an embodiment of the present invention is shown;

[0026] Figure 5 A partial cross-sectional view of the structure according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of the internal structure of the installation mechanism according to an embodiment of the present invention is shown;

[0028] Figure 7 An exploded view of the ventilation assembly according to an embodiment of the present invention is shown;

[0029] Figure 8 A partial cross-sectional view of a ventilation assembly according to an embodiment of the present invention is shown.

[0030] List of reference numerals

[0031] 1. Installation mechanism;

[0032] 101. Main body; 1011. Side groove; 1012. Fixing groove

[0033] 102. Connecting groove; 1021. Locating pin;

[0034] 103. Inner groove; 1031. Fixing rod;

[0035] 2. External part;

[0036] 201. Movable plate; 202. Engagement groove; 203. Insertion hole;

[0037] 3. Connecting components;

[0038] 301, Mounting rod; 3011, Guide plate;

[0039] 302, Tilting rod; 3021, End slot;

[0040] 4. Ventilation components;

[0041] 401, Rotating component; 4011, Air inlet;

[0042] 402. Socket; 403. Mounting bracket;

[0043] 404, vent tube; 4041, vent hole;

[0044] 405, Inner tube; 4051, Connecting hole. Detailed Implementation

[0045] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0046] Example: Please refer to Figures 1 to 8 As shown:

[0047] This invention provides a multi-channel oropharyngeal ventilation device, comprising: a mounting mechanism 1; the mounting mechanism 1 includes an inner groove 103 and a fixing rod 1031, the inner groove 103 being provided in two sets, and the inner groove 103 being symmetrically arranged at both ends of the rear side of the main body 101 in the mounting mechanism 1, and the inner groove 103 being connected to the fixing groove 1012 at the rear end of the main body 101; the fixing rod 1031 being provided in two sets, and the fixing rod 1031 being slidably installed in the inner groove 103 by means of an elastic element, and the fixing rod 1031 having round rods at both ends, the round rods being located in the fixing groove 1012; the mounting mechanism 1 is provided with two sets of external connecting parts 2, and the movable plates 201 of the external connecting parts 2 are provided at both ends of the rear side of the main body 101, and the rectangular blocks on the outer side of the movable plates 201 are inserted into the fixing groove 1012, and the insertion holes 203 at both ends of the movable plates 201 are inserted into the fixing groove 1012. A circular rod is attached to a fixing rod 1031; the mounting mechanism 1 is provided with two sets of connecting components 3, and the mounting rods 301 of the connecting components 3 are located on both sides of the main body 101, and the guide plates 3011 on the mounting rods 301 are slidably installed in the side grooves 1011 at both ends of the main body 101 through elastic elements; the mounting mechanism 1 is provided with a ventilation component 4, and the rotating part 401 and the ventilation pipe 404 of the ventilation component 4 are inserted into the circular through hole at the inner end of the main body 101, and the rectangular blocks at both ends of the ventilation pipe 404 are engaged with the rectangular groove in the circular through hole inside the main body 101, the fixing bracket 403 on the rotating part 401 is located on the front side of the main body 101, and the two ends of the fixing bracket 403 are engaged with the connecting groove 102 outside the main body 101, and the two sides of the fixing bracket 403 are penetrated by the positioning pins 1021 in the connecting groove 102.

[0048] Among them, such as Figure 4-6 As shown, the installation mechanism 1 also includes: a main body 101, side grooves 1011, and fixing grooves 1012; a circular through hole is provided in the middle of the main body 101; two sets of side grooves 1011 are provided, and the side grooves 1011 pass through both sides of the main body 101; two sets of fixing grooves 1012 are provided, and the fixing grooves 1012 are symmetrically arranged at the upper and lower ends of the rear side of the main body 101; a rectangular main body 101 is provided so that the ventilation component 4 can be fixed to the patient's mouth through the main body 101; a rectangular side groove 1011 is provided so that the connecting component 3 can be slidably connected to the main body 101 through the side groove 1011; and a rectangular fixing groove 1012 is provided so that the movable plate 2 can be fixed to the main body 101 through the side groove 1011. 01 is fixed to the rear two ends of the main body 101 via the fixing groove 1012, connecting groove 102 and positioning pin 1021; there are two sets of connecting groove 102, and the connecting groove 102 is opened at the front two ends of the main body 101; the positioning pin 1021 is located at the front two ends of the main body 101, and the rear end of the positioning pin 1021 is inserted into the connecting groove 102. The rectangular connecting groove 102 is provided so that the fixing bracket 403 can be fixed to the front end of the main body 101 via the connecting groove 102. The positioning pin 1021 is provided so that the two ends of the fixing bracket 403 can be fixed in the connecting groove 102 by inserting the positioning pin 1021 into both sides of the fixing bracket 403.

[0049] Among them, such as Figure 6 As shown, the external part 2 includes: a movable plate 201, an occlusal groove 202, and an insertion hole 203; the movable plate 201 has an arc-shaped plate structure, and a rectangular protrusion structure is provided at the bottom of the movable plate 201; the occlusal groove 202 is located at the rear end of the movable plate 201; the insertion hole 203 is located in the rectangular protrusion structure at the bottom of the movable plate 201, and the insertion hole 203 penetrates through the rectangular protrusion structure. The L-shaped movable plate 201 allows the device to be fixed to the patient's mouth by biting down on the movable plate with the teeth. 201 allows the movable plate 201 to provide support for the teeth, thereby preventing the patient's mandibular pain. By setting the occlusal groove 202 and engaging the patient's teeth in the occlusal groove 202, the patient's teeth can be fixed to the movable plate 201. A circular insertion hole 203 is provided so that when the bottom of the movable plate 201 is inserted into the fixed groove 1012, the movable plate 201 can be fixed in the fixed groove 1012 by inserting the round rods at both ends of the fixed rod 1031 into the insertion hole 203.

[0050] Among them, such as Figure 4 As shown, the connecting component 3 includes: a mounting rod 301 and a guide plate 3011; the mounting rod 301 has a rectangular groove inside; the guide plate 3011 is located on the outside of the mounting rod 301; a U-shaped mounting rod 301 is provided, which allows the flipping rod 302 to be rotatably mounted inside the mounting rod 301; an L-shaped guide plate 3011 is provided, which allows the mounting rod 301 to be slidably connected to the side groove 1011 through the guide plate 3011; the flipping rod 302 and the end groove 3021 are provided; the flipping rod 302 is rotatably mounted in the rectangular groove inside the mounting rod 301 through a connecting shaft; the end groove 3021 is located at the inner rear end of the flipping rod 302; the rectangular flipping rod 302 allows a connecting rope to be installed on the flipping rod 302, thus facilitating its attachment to the patient's head; the rectangular end groove 3021 facilitates the connection of the connecting rope to the flipping rod 302.

[0051] As one embodiment of this application, wherein, as Figure 7-8As shown, the ventilation assembly 4 includes: a rotating component 401 and an air inlet 4011; the rear end of the rotating component 401 is provided with triangular protrusions; the air inlet 4011 is annularly opened at the inner end of the rotating component 401, and the air inlet 4011 passes through both ends of the rotating component 401, and an air filter is provided inside the air inlet 4011; a cylindrical rotating component 401 is provided, and by rotating the rotating component 401, the connection between the connecting hole 4051 and the external connection can be adjusted; a circular air inlet 4011 is provided, allowing external air to enter the ventilation hole 4041 through the air inlet 4011; a plug-in hole 402 and a fixing bracket 403 are also provided. The insertion hole 402 is located at the inner end of the rotating part 401 and extends through both ends of the rotating part 401. The fixing bracket 403 is sleeved on the outer end of the rotating part 401 and is movably connected to the rotating part 401 via an elastic element. A circular insertion hole 402 allows the connecting hole 4051 to communicate with the outside through the insertion hole 402. A U-shaped fixing bracket 403 allows the rotating part 401 to be rotatably mounted onto the main body 101 via the fixing bracket 403. A vent pipe 404 and a vent hole 4041 are also included. The vent pipe 404 is located on the rear side of the rotating part 401, and the outer front end of the vent pipe 404 is... The ventilation tube 404 has triangular protrusions, and the triangular protrusions on the front side of the ventilation tube 404 engage with the triangular protrusions on the rear side of the rotating component 401. Circular through holes are evenly spaced at the outer rear end of the ventilation tube 404. Two sets of ventilation holes 4041 are provided, located at both ends inside the ventilation tube 404 and connected to the circular through holes on the rear side of the ventilation tube 404. The ventilation holes 4041 are also connected to the air inlet 4011. The cylindrical ventilation tube 404 allows external air to be delivered to the patient, and the ventilation holes 4041 allow external air to pass through... The air vent 4041 enters the patient's body, along with the inner tube 405 and the connecting hole 4051. The inner tube 405 is located at the inner end of the ventilation tube 404 and is situated between the two sets of ventilation holes 4041. There are two sets of connecting holes 4051, which are located inside the inner tube 405 and extend through both sides of the inner tube 405. The bottom connecting hole 4051 is connected to the insertion hole 402. A circular inner tube 405 is provided, and a connecting hole 4051 is provided in the inner tube 405. By passing the instrument through the connecting hole 4051 of the inner tube 405, gastroscopy or gastric tube delivery can be performed on the patient.

[0052] As another embodiment of the present invention, when in use, the rear end of the ventilation tube 404 can be configured with an arc-shaped structure. After the device is inserted into the patient's mouth, the arc-shaped structure at the rear end of the ventilation tube 404 fits against the patient's throat, so that the device can extend into the patient's throat to deliver oxygen in real time during use, thereby preventing the patient in a syncope state from having difficulty breathing due to the tongue falling back.

[0053] The specific usage and function of this embodiment are as follows:

[0054] In this invention, such as Figure 1-8 As shown, connecting components 3 are movably installed at both ends of the main body 101 via side grooves 1011. Connecting ropes are connected to the end grooves 3021 of the flipping rod 302, and the device is fixed to the patient's head via the connecting ropes. Fixing rods 1031 are slidably installed in the two sets of inner grooves 103 at the rear end of the main body 101 via elastic elements. Pulling the fixing rods 1031 to both sides installs the movable plate 201, used to fix the patient's teeth, into the fixing groove 1012. Releasing the fixing rods 1031 allows the elastic elements to push the fixing rods 1031 back to their original position, and the circular rods at both ends of the fixing rods 1031 are inserted into the insertion holes 203 on both sides of the movable plate 201, thereby fixing the movable plate 201 to the rear end of the main body 101. The patient bites down into the occlusal grooves 202 on the movable plate 201, and the ventilation tube 404 is inserted into the circular grooves inside the main body 101. In the through hole, the rotating part 401 is installed to the front end of the main body 101 through the fixing bracket 403, so that the triangular structure at the rear end of the rotating part 401 engages with the triangular structure at the front end of the ventilation tube 404, and the air inlet 4011 on the rotating part 401 is connected to the ventilation hole 4041 in the ventilation tube 404, so that the air inlet 4011 is always connected to the ventilation hole 4041 when the rotating part 401 rotates. A insertion hole 402 is opened at the inner end of the rotating part 401, and the insertion hole 402 is connected to the connecting hole 4051 on the bottom side of the inner tube 405. The gastroscopy tube or gastrointestinal delivery tube is inserted into the patient's throat through the insertion hole 402 and the connecting hole 4051 for examination. After the connecting hole 4051 is used, the used connecting hole 4051 is covered by rotating the rotating part 401.

[0055] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0056] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A multi-channel oropharyngeal ventilation device, characterized in that, The system includes an installation mechanism (1); the installation mechanism (1) includes an inner groove (103) and a fixing rod (1031). Two sets of the inner groove (103) are provided, symmetrically arranged at both ends of the rear side of the main body (101) in the installation mechanism (1), and the inner groove (103) is connected to the fixing groove (1012) at the rear end of the main body (101). Two sets of the fixing rod (1031) are provided, and the fixing rod (1031) is slidably installed via an elastic element. The mounting mechanism (1) is installed in the inner groove (103), and the two ends of the fixing rod (1031) are provided with round rods, which are located in the fixing groove (1012); the mounting mechanism (1) is provided with two sets of external parts (2), and the movable plate (201) of the external part (2) is provided at both ends of the rear side of the main body (101), and the rectangular block on the outside of the movable plate (201) is inserted into the fixing groove (1012), and the fixing rod (1031) is inserted into the insertion hole (203) at both ends of the movable plate (201). The mounting mechanism (1) is provided with two sets of connecting components (3), and the mounting rods (301) of the connecting components (3) are located on both sides of the main body (101), and the guide plates (3011) on the mounting rods (301) are slidably installed in the side grooves (1011) at both ends of the main body (101) through elastic elements; the mounting mechanism (1) is provided with a ventilation component (4), and the rotating part (401) of the ventilation component (4) and the ventilation pipe (404) are inserted into it. In the circular through hole at the inner end of the main body (101), and the rectangular blocks at both ends of the vent pipe (404) engage with the rectangular groove in the circular through hole inside the main body (101), the fixing bracket (403) on the rotating part (401) is located on the front side of the main body (101), and the two ends of the fixing bracket (403) engage with the connecting groove (102) outside the main body (101), and the two sides of the fixing bracket (403) are penetrated by the positioning pin (1021) in the connecting groove (102); The ventilation assembly (4) includes: a rotating part (401) and an air inlet (4011); the rear end of the rotating part (401) is provided with triangular protrusions; the air inlet (4011) is opened in a ring at the inner end of the rotating part (401), and the air inlet (4011) passes through both ends of the rotating part (401), and an air filter is provided inside the air inlet (4011); The ventilation assembly (4) further includes: a plug hole (402) and a fixing bracket (403); the plug hole (402) is opened at the inner end of the rotating part (401) and the plug hole (402) passes through both ends of the rotating part (401); the fixing bracket (403) is sleeved on the outer end of the rotating part (401) and the fixing bracket (403) is movably connected to the rotating part (401) through an elastic element.

2. The multi-channel oropharyngeal ventilation device as described in claim 1, characterized in that: The installation mechanism (1) further includes: a main body (101), a side groove (1011), and a fixing groove (1012); a circular through hole is provided in the middle of the main body (101); there are two sets of side grooves (1011), and the side grooves (1011) penetrate through both sides of the main body (101); there are two sets of fixing grooves (1012), and the fixing grooves (1012) are symmetrically arranged at the upper and lower ends of the rear side of the main body (101).

3. The multi-channel oropharyngeal ventilation device as described in claim 2, characterized in that: The installation mechanism (1) further includes: a connecting groove (102) and a positioning pin (1021); the connecting groove (102) is provided in two sets, and the connecting groove (102) is opened at both ends of the front side of the main body (101); the positioning pin (1021) is provided at both ends of the front side of the main body (101), and the rear end of the positioning pin (1021) is inserted into the connecting groove (102).

4. The multi-channel oropharyngeal ventilation device as described in claim 1, characterized in that: The external part (2) includes: a movable plate (201), a meshing groove (202), and a socket (203); the movable plate (201) is an arc-shaped plate structure, and a rectangular protrusion structure is provided at the bottom of the movable plate (201); the meshing groove (202) is located at the rear end of the movable plate (201); the socket (203) is located in the rectangular protrusion structure at the bottom of the movable plate (201), and the socket (203) penetrates through the rectangular protrusion structure.

5. A multi-channel oropharyngeal ventilation device as described in claim 1, characterized in that: The connecting assembly (3) includes: a mounting rod (301) and a guide plate (3011); the mounting rod (301) has a rectangular groove inside; the guide plate (3011) is located on the outside of the mounting rod (301).

6. A multi-channel oropharyngeal ventilation device as described in claim 5, characterized in that: The connecting assembly (3) further includes: a flipping rod (302) and an end groove (3021); the flipping rod (302) is rotatably mounted in a rectangular groove in the mounting rod (301) via a connecting shaft; the end groove (3021) is located at the inner rear end of the flipping rod (302).

7. A multi-channel oropharyngeal ventilation device as described in claim 1, characterized in that: The ventilation assembly (4) further includes: a ventilation pipe (404) and a ventilation hole (4041); the ventilation pipe (404) is located on the rear side of the rotating part (401), and the outer front end of the ventilation pipe (404) is provided with triangular protrusions in equal rows, and the triangular protrusions on the front side of the ventilation pipe (404) engage with the triangular protrusions on the rear side of the rotating part (401), and the outer rear end of the ventilation pipe (404) is provided with circular through holes in equal rows; there are two sets of ventilation holes (4041), and the ventilation holes (4041) are located at both ends inside the ventilation pipe (404), and the ventilation holes (4041) are connected to the circular through holes on the rear side of the ventilation pipe (404), and the ventilation holes (4041) are connected to the air inlet (4011).

8. A multi-channel oropharyngeal ventilation device as described in claim 7, characterized in that: The ventilation assembly (4) further includes: an inner tube (405) and a connecting hole (4051); the inner tube (405) is located at the inner end of the ventilation pipe (404) and is located between two sets of ventilation holes (4041); there are two sets of connecting holes (4051), and the connecting holes (4051) are opened inside the inner tube (405), the connecting holes (4051) penetrate through both sides of the inner tube (405), and the bottom connecting hole (4051) is connected to the insertion hole (402).

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