Seam device for oxygen supply of throat part in anesthesia process of gastroscopy

Abstract

The invention relates to the technical field of throat oxygen supply, in particular to a seaming device for throat oxygen supply in the anesthesia process of gastroscopy, which comprises a main body ring, a connecting belt is fixedly connected to the side surface of the main body ring, and a balance oxygen supply mechanism for supplying oxygen and inhaling air to the throat is arranged at the end part of the main body ring. The balance oxygen supply mechanism comprises a first through hole formed in the end of the main body ring, a first fixing pipe is arranged in the first through hole of the main body ring in a sliding mode, a fixing body is arranged at the end of the first fixing pipe, and a connecting ring is fixedly connected to the end of the fixing body; the end part of the main body ring is fixedly connected with a nasal cavity collecting mechanism for absorbing nasal cavity gas; the first diaphragm flow meter can detect the volume of exhaled gas, and the volume of oxygen exhaled by the oxygen supply mechanism is consistent with the volume of the exhaled gas, so that the gas balance in the inner cavity of the body of the patient can be ensured, and the discomfort of the patient is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen supply to the throat, and particularly to a bite device for oxygen supply to the throat during the anesthesia process of gastroscopy examination. Background Art

[0002] Gastroscopy examination is a method of directly observing the internal conditions of the esophagus, stomach, and duodenum by using a gastroscope. It is widely used in the diagnosis and treatment of digestive system diseases. Before performing gastroscopy, local anesthesia or general anesthesia is usually performed on the patient to ensure the smooth progress of the gastroscopy examination. However, for some people with difficulty breathing due to obesity or other reasons, it is difficult to rely on natural nasal breathing. At this time, one end of the oxygen delivery tube is inserted into the throat, and the other end of the oxygen delivery tube is connected to an oxygen tank.

[0003] The end of the oxygen delivery tube is an open structure of a ring. When the oxygen delivery tube passes through the swollen throat, the end of the oxygen delivery tube may damage the patient's throat. Moreover, since the end of the oxygen delivery tube is an open structure, during the oxygen delivery process, the liquid secreted by the throat is likely to enter the oxygen delivery tube and easily block the oxygen delivery tube, posing a safety hazard. The existing oxygen delivery tube end is connected to the oxygen tank, so there is a relatively large pressure at the air outlet end located in the throat, which can cause damage to the patient's throat during long-term use. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the background art, and to propose a bite device for oxygen supply to the throat during the anesthesia process of gastroscopy examination.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a bite device for oxygen supply to the throat during the anesthesia process of gastroscopy examination, including a main body ring and an anti-blocking mechanism. A connecting band is fixedly connected to the side surface of the main body ring. A balanced oxygen supply mechanism for supplying oxygen and inhaling air to the throat is provided at the end of the main body ring. The balanced oxygen supply mechanism includes a first through hole opened at the end of the main body ring. A first fixed tube is slidably arranged in the first through hole of the main body ring. A fixing body is provided at the end of the first fixed tube. A second fixed tube is arranged in the first fixed tube. A connecting ring is fixedly connected to the end of the fixing body. A nasal cavity collection mechanism for absorbing nasal cavity gas is fixedly connected to the end of the main body ring.

[0006] Preferably, a first placement groove is opened on the side surface of the main body ring. A first flexible ring is fixedly connected in the first placement groove of the main body ring. An installation hole is penetrated through the end of the main body ring. A gastroscope detection tube for performing gastroscopy on others is connected in the installation hole.

[0007] Preferably, a number of equally-angularly distributed limiting plates are fixedly connected to the inner side surface of the first fixed tube near the fixed body, the ends of the number of limiting plates are fixedly connected to the side surface of the second fixed tube, and a propulsion head is connected to the end of the first fixed tube away from the fixed body.

[0008] Preferably, the propulsion head has an elliptical housing structure, a first partition plate is fixedly connected to the inner side of the propulsion head, a number of equally-angularly distributed air inlet holes are formed in the side surface of the propulsion head in the area away from the first fixed tube, and a number of equally-angularly distributed air outlet holes are formed in the side surface of the propulsion head in the area near the first fixed tube.

[0009] Preferably, a third through hole is formed through the end of the first partition plate, a filter plate is fixedly connected in the third through hole, and the end of the second fixed tube is fixedly connected to the end surface of the first partition plate.

[0010] Preferably, a number of equally-angularly distributed first empty grooves are formed at the end of the fixed body, the number of first empty grooves communicates with the inside of the first fixed tube, the fixed body has a circular ring structure, and the inside of the fixed body communicates with the inside of the second fixed tube.

[0011] Preferably, a first diaphragm flowmeter is connected to the inner side of the connection ring near the end through a card slot structure, a limiting ring is fixedly connected to the end of the first fixed tube, a limiting groove is formed at the end of the fixed body, the limiting ring and the limiting groove are connected by screw fit, a second empty groove communicating with the first empty groove is formed in the fixed body, the second empty groove has a circular ring structure, a second through hole communicating with the second empty groove is formed in the side surface of the fixed body, the second through hole is connected to an oxygen supply device through a delivery pipe, and the end of the connection ring is connected to the external air through a delivery pipe.

[0012] Preferably, the nasal cavity collection mechanism includes two second delivery pipes fixedly connected to the end surface of the main body ring, the two second delivery pipes are symmetrically arranged, plugs are respectively connected to the ends of the two second delivery pipes through a card slot structure, a third delivery pipe is connected to the side surfaces of the two second delivery pipes in a communicating manner, a first delivery pipe is connected to the side surface of one of the second delivery pipes in a communicating manner, and the end of the first delivery pipe is connected to the inner side of the connection ring in a communicating manner.

[0013] Preferably, fourth through holes are respectively formed through the ends of the two plugs, second placement grooves are respectively formed in the side surfaces of the two plugs, and second flexible rings are respectively fixedly connected to the two plugs in the second placement grooves.

[0014] Preferably, the main body ring includes a propulsion shell. One end of the propulsion shell is a rounded corner structure. A placement hole is formed through the other end of the propulsion shell. The end of the propulsion shell is connected to the end of the first fixed tube. The inner side of the first fixed tube communicates with the placement hole. A second partition is fixedly connected inside the propulsion shell. The inner side of the second partition is in close contact with the side of the second fixed tube. Four equally-angled distribution guide holes are formed through the end of the second partition. An isolation ring is fixedly connected to the end of the second partition. The other end of the isolation ring is connected to the propulsion shell. A sliding ring is slidably arranged inside the isolation ring. Four connecting rods that are slidably matched with the guide holes are fixedly connected to the end of the sliding ring. The ends of the four connecting rods are respectively fixedly connected with dredging heads. A sixth through hole that is slidably matched with the dredging heads is formed at the end of the propulsion shell. A number of fifth through holes are formed at the end of the propulsion shell close to the first fixed tube. A number of seventh through holes are formed on the side of the isolation ring. A number of springs are fixedly connected to the side of the second partition. The other ends of the number of springs are fixedly connected to the sliding ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The second through hole on the side of the fixed body is connected to the oxygen supply device through a delivery pipe. Oxygen enters the first empty slot through the second empty slot, and then enters the propulsion head through the inside of the first fixed tube. Blocked by the first partition, oxygen is discharged through a number of air outlet holes. The number of air outlet holes is arranged on the opposite side of the advancing direction of the propulsion head, preventing the oxygen from being blocked by nasal polyps or liquid secretions when spraying, improving the stability of the device. When the first fixed tube advances, the propulsion head at the end of the first fixed tube is an elliptical shell structure. The smooth propulsion head can avoid scratching the tissues in the advancing direction, improving the safety of the device;

[0017] 2. The gas exhaled by the patient moves to the connection ring through the first air delivery pipe. At the same time, the gas exhaled from the patient's mouth enters the propulsion head through a number of air inlet holes. After being filtered by the filter plate, the gas enters the inside of the second fixed tube, and then enters the inside of the fixed body through the second fixed tube. Finally, the gas exhaled from the mouth and the gas at the nasal cavity reach the connection ring at the same time, and finally are discharged to the outside through the first diaphragm flowmeter, controlling the volume of oxygen provided by the oxygen supply device to be consistent with the volume of the exhaled gas, which can ensure the gas balance in the patient's body cavity and reduce the discomfort of the patient;

[0018] 3. When the patient inhales, the oxygen supply device passes oxygen into the inner part of the isolation ring at this time. The oxygen in the isolation ring drives the sliding ring to move towards the direction of the second partition board. While moving, the sliding ring drives the dredging head to move into the sixth through hole through the connecting rod, and can push out impurities such as oral mucus flowing into the sixth through hole from the sixth through hole to prevent blockage. At the same time, at this time, the oxygen in the isolation ring is discharged into the propulsion shell through the seventh through hole, and then the oxygen is discharged into the patient's throat through the fifth through hole for absorption, preventing the exhaled oxygen from entering the sixth through hole and improving the accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of a partial structure of the present invention Figure 1 ;

[0021] Figure 3 is a schematic diagram of a partial structure of the present invention Figure 2 ;

[0022] Figure 4 is a schematic diagram of a partial structure of the present invention Figure 3 ;

[0023] Figure 5 is of the present invention Figure 2 magnified view of part A;

[0024] Figure 6 is of the present invention Figure 2 magnified view of part B;

[0025] Figure 7 is of the present invention Figure 3 magnified view of part C;

[0026] Figure 8 is a schematic diagram of a partial structure of the present invention Figure 4 ;

[0027] Figure 9 is a schematic diagram of the structure of the anti-blocking mechanism of the present invention;

[0028] Figure 10 is a schematic cross-sectional view of the anti-blocking mechanism of the present invention.

[0029] 1. Main body ring; 2. Balanced oxygen supply mechanism; 3. Nasal cavity collection mechanism; 4. Anti-blocking mechanism; 11. Connecting belt; 12. First flexible ring; 13. First placement groove; 14. Mounting hole; 21. First fixing tube; 22. Pushing head; 23. Air inlet hole; 24. First through hole; 25. Second through hole; 26. Connecting ring; 27. First air duct; 28. Air outlet hole; 29. Limiting plate; 210. Second fixing tube; 211. Fixed body; 212. Limiting groove; 213. Limiting ring; 214. First empty groove; 215. Second empty groove; 216. First diaphragm flowmeter; 217. First partition plate; 218. Filter plate; 219. Third through hole; 31. Second air duct; 32. Third air duct; 33. Plug; 34. Second flexible ring; 35. Second placement groove; 36. Fourth through hole; 41. Pushing shell; 42. Fifth through hole; 43. Sixth through hole; 44. Connecting rod; 45. Unblocking head; 46. Second partition plate; 47. Isolation ring; 48. Sliding ring; 49. Seventh through hole; 410. Spring; 411. Placement hole; 412. Guide hole. Detailed implementation mode

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and other obvious variants can be thought of by those skilled in the art.

[0031] Embodiment 1; Please refer to Figure 1 - Figure 7 , a bite device for oxygen supply to the pharynx during the anesthesia process of gastroscopy examination, including a main body ring 1, and a connecting belt 11 is fixedly connected to the side surface of the main body ring 1.

[0032] A first placement groove 13 is opened on the side surface of the main body ring 1. A first flexible ring 12 is fixedly connected in the first placement groove 13 of the main body ring 1. An installation hole 14 is penetrated and opened at the end of the main body ring 1, and a gastroscope detection tube for performing gastroscopy examination on others is connected in the installation hole 14.

[0033] Specifically, the first flexible ring 12 on the side surface of the main body ring 1 is in close contact with the patient's mouth, and then the connecting belt 11 is tied, and then the patient is anesthetized.

[0034] A balanced oxygen supply mechanism 2 for supplying oxygen and inhaling air to the pharynx is arranged at the end of the main body ring 1. The balanced oxygen supply mechanism 2 includes a first through hole 24 opened at the end of the main body ring 1. A first fixing tube 21 is slidably arranged in the first through hole 24 of the main body ring 1. A fixed body 211 is arranged at the end of the first fixing tube 21. A second fixing tube 210 is arranged in the first fixing tube 21. A connecting ring 26 is fixedly connected to the end of the fixed body 211.

[0035] On the inner side of the first fixing tube 21, several equally-angularly distributed limiting plates 29 are fixedly connected near the fixing body 211. The ends of the several limiting plates 29 are fixedly connected to the side surface of the second fixing tube 210. At the end of the first fixing tube 21 away from the fixing body 211, a pushing head 22 is fixedly connected.

[0036] The pushing head 22 has an elliptical shell structure. Inside the pushing head 22, a first partition plate 217 is fixedly connected. On the side surface of the pushing head 22 in the area away from the first fixing tube 21, several equally-angularly distributed air inlet holes 23 are formed. On the side surface of the pushing head 22 in the area close to the first fixing tube 21, several equally-angularly distributed air outlet holes 28 are formed.

[0037] At the end of the first partition plate 217, a third through hole 219 is formed through. A filter plate 218 is fixedly connected in the third through hole 219. The end of the second fixing tube 210 is fixedly connected to the end surface of the first partition plate 217.

[0038] At the end of the fixing body 211, several equally-angularly distributed first empty slots 214 are formed. The several first empty slots 214 communicate with the inside of the first fixing tube 21. The fixing body 211 has a ring structure. The inside of the fixing body 211 communicates with the inside of the second fixing tube 210.

[0039] On the inner side of the connecting ring 26 near the end, a first diaphragm flowmeter 216 is connected through a card slot structure. At the end of the first fixing tube 21, a limiting ring 213 is fixedly connected. At the end of the fixing body 211, a limiting slot 212 is formed. The limiting ring 213 and the limiting slot 212 are connected through screw thread matching. Inside the fixing body 211, a second empty slot 215 communicating with the first empty slot 214 is formed. The second empty slot 215 has a ring structure. On the side surface of the fixing body 211, a second through hole 25 communicating with the second empty slot 215 is formed. The second through hole 25 is connected to an oxygen supply device through a delivery pipe. The end of the connecting ring 26 is communicated with the external air through a delivery pipe.

[0040] Specifically, oxygen enters the first empty slot 214 through the second empty slot 215, and then enters the pushing head 22 through the inside of the first fixing tube 21. Blocked by the first partition plate 217, the oxygen is discharged through several air outlet holes 28. The several air outlet holes 28 are arranged on the reverse side of the advancing direction of the pushing head 22, preventing the oxygen from being blocked by nasal polyps or liquid secretions when spraying, improving the stability of the device. When the first fixing tube 21 advances, the pushing head 22 at the end of the first fixing tube 21 has an elliptical shell structure. The smooth pushing head 22 can avoid scratching the tissue in the advancing direction, improving the safety of the device.

[0041] The end of the main body ring 1 is fixedly connected with a nasal cavity collection mechanism 3 for absorbing nasal cavity gas.

[0042] The nasal cavity collection mechanism 3 includes two second air pipes 31 fixedly connected to the end face of the main body ring 1. The two second air pipes 31 are symmetrically arranged. The ends of the two second air pipes 31 are respectively connected with plugs 33 through a slot structure. The sides of the two second air pipes 31 are connected to a third air pipe 32 in a communicating manner. The side of one second air pipe 31 is connected to a first air pipe 27 in a communicating manner. The end of the first air pipe 27 is connected to the inside of the connecting ring 26 in a communicating manner.

[0043] Fourth through holes 36 are respectively formed in the ends of the two plugs 33. Second placement grooves 35 are respectively formed in the sides of the two plugs 33. Second flexible rings 34 are fixedly connected in the second placement grooves 35 of the two plugs 33 respectively.

[0044] Specifically, the gas exhaled from the nasal cavity passes through the two second air pipes 31. The two second air pipes 31 are connected through the third air pipe 32. Then, the gas exhaled by the patient moves into the connecting ring 26 through the first air pipe 27.

[0045] Embodiment 2; Please refer to Figure 8 - Figure 10 A bite device for oxygen supply to the pharynx during the anesthesia process of gastroscopy examination, including a main body ring 1 and an anti-blocking mechanism 4. The main body ring 1 includes a propulsion shell 41. One end of the propulsion shell 41 is a rounded corner structure. A placement hole 411 is formed through the other end of the propulsion shell 41. The end of the propulsion shell 41 is connected to the end of the first fixed pipe 21. The inner side of the first fixed pipe 21 is communicated with the placement hole 411. A second partition 46 is fixedly connected inside the propulsion shell 41. The inner side of the second partition 46 is in close contact with the side of the second fixed pipe 210. Four guiding holes 412 are formed through the end of the second partition 46 at equal angles. An isolation ring 47 is fixedly connected to the end of the second partition 46. The other end of the isolation ring 47 is connected to the propulsion shell 41. A sliding ring 48 is slidably arranged inside the isolation ring 47. Four connecting rods 44 that are slidably matched with the guiding holes 412 are fixedly connected to the end of the sliding ring 48. Drainage heads 45 are respectively fixedly connected to the ends of the four connecting rods 44. A sixth through hole 43 that is slidably matched with the drainage head 45 is formed in the end of the propulsion shell 41. A plurality of fifth through holes 42 are formed in the end of the propulsion shell 41 close to the first fixed pipe 21. A plurality of seventh through holes 49 are formed in the side of the isolation ring 47. A plurality of springs 410 are fixedly connected to the side of the second partition 46. The other ends of the plurality of springs 410 are fixedly connected to the sliding ring 48.

[0046] The components in the present invention can be reused after disinfection;

[0047] During use, place the main body ring 1 in the patient's mouth, so that the first flexible ring 12 on the side of the main body ring 1 is in close contact with the patient's mouth, then fasten the connecting belt 11, and then anesthetize the patient. For some people with difficulty breathing, nasal or laryngeal breathing will be used. Insert the two plugs 33 into the patient's nasal cavity, and slowly move the first fixing tube 21 in the first through hole 24 until the pushing head 22 at the end of the first fixing tube 21 moves to the patient's larynx. Then, fixedly connect the end of the first fixing tube 21 with the fixing body 211 by means of threads. It can be inserted after the patient is anesthetized to reduce the discomfort of the patient. Then, the second through hole 25 on the side of the fixing body 211 is connected to the oxygen supply mechanism through a delivery tube. Oxygen enters the first empty slot 214 through the second empty slot 215, and then enters the pushing head 22 through the inside of the first fixing tube 21. Blocked by the first partition plate 217, oxygen is discharged through a plurality of air outlet holes 28. The plurality of air outlet holes 28 are arranged on the opposite side of the advancing direction of the pushing head 22 to prevent the oxygen from being blocked by nasal polyps or liquid secretions when spraying out, improving the stability of the device. When the first fixing tube 21 advances, the pushing head 22 at the end of the first fixing tube 21 is an elliptical shell structure. The smooth pushing head 22 can avoid scratching the tissues in the advancing direction, improving the safety of the device.

[0048] When the patient exhales, for people with difficulty breathing, they may exhale through the nasal cavity or mouth. At this time, the gas exhaled through the nasal cavity passes through the two second air delivery tubes 31. The two second air delivery tubes 31 are connected through a third air delivery tube 32. Then, the gas exhaled by the patient moves to the connecting ring 26 through the first air delivery tube 27. At the same time, the gas exhaled from the patient's mouth enters the pushing head 22 through a plurality of air inlet holes 23. Then, under the filtration of the filter plate 218, the gas enters the inside of the second fixing tube 210, and then enters the inside of the fixing body 211 through the second fixing tube 210. Finally, the gas from the mouth and the gas from the nasal cavity reach the connecting ring 26 at the same time, and finally are discharged to the outside through the first diaphragm flowmeter 216. The oxygen supply device is communicated with the second through hole 25 through a solenoid valve and a second diaphragm flowmeter. The controller is electrically connected to the first diaphragm flowmeter 216, the solenoid valve and the second diaphragm flowmeter respectively. When the value of the first diaphragm flowmeter 216 remains unchanged every once in a while, the controller controls the solenoid valve to open at this time. The oxygen provided by the oxygen supply device enters the second through hole 25 through the second diaphragm flowmeter. When the increase value of the second diaphragm flowmeter is the same as the increase value of the first diaphragm flowmeter 216, the controller controls the solenoid valve to close, and then repeats the whole process to ensure that the volume of oxygen provided by the oxygen supply device is the same as the volume of exhaled gas, which can ensure the gas balance in the patient's body cavity and reduce the discomfort of the patient.

[0049] Both the propulsion head 22 and the propulsion shell 41 are connected to the first fixed tube 21 by means of a threaded fit. Replace the propulsion head 22 with the propulsion shell 41. At this time, the end of the second fixed tube 210 contacts the inner side of the second partition plate 46. When the patient inhales, the oxygen supply device passes oxygen into the isolation ring 47 at this time. The oxygen in the isolation ring 47 drives the sliding ring 48 to move in the direction of the second partition plate 46. While moving, the sliding ring 48 drives the dredging head 45 to move into the sixth through hole 43 through the connecting rod 44, and can push out impurities such as oral mucus flowing into the sixth through hole 43 from the sixth through hole 43 to prevent blockage. At the same time, at this time, the oxygen in the isolation ring 47 is discharged into the propulsion shell 41 through the seventh through hole 49, and then the oxygen is discharged into the patient's throat through the fifth through hole 42 for absorption, preventing the exhaled oxygen from entering the sixth through hole 43 and improving the accuracy of the device. When the patient exhales, the oxygen supply device stops operating at this time, and the sliding ring 48 moves to the initial position under the elastic force of the spring 410. At this time, the exhaled gas enters the second fixed tube 210 through the sixth through hole 43 and finally enters the first diaphragm flowmeter 216.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bite device for oxygen supply to the pharynx during the anesthesia process of gastroscopy, comprising a main body ring (1) and an anti-blocking mechanism (4), characterized in that: A connecting belt (11) is fixedly connected to the side surface of the main body ring (1). An oxygen supply and inhalation balancing oxygen supply mechanism (2) for supplying oxygen and inhaling air to the throat is arranged at the end of the main body ring (1). The balancing oxygen supply mechanism (2) includes a first through hole (24) opened at the end of the main body ring (1). A first fixing pipe (21) is slidably arranged in the first through hole (24) of the main body ring (1). A fixing body (211) is arranged at the end of the first fixing pipe (21). A second fixing pipe (210) is arranged inside the first fixing pipe (21). A connecting ring (26) is fixedly connected to the end of the fixing body (211). A nasal cavity collection mechanism (3) for absorbing nasal cavity gas is fixedly connected to the end of the main body ring (1).

2. The bite device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 1, characterized in that: A first placement groove (13) is opened on the side surface of the main body ring (1). A first flexible ring (12) is fixedly connected in the first placement groove (13) of the main body ring (1). An installation hole (14) is penetrated and opened at the end of the main body ring (1). A gastroscope detection tube for performing gastroscopy on others is connected in the installation hole (14).

3. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 1, wherein: A plurality of equally-angularly distributed limiting plates (29) are fixedly connected to the inner side surface of the first fixing pipe (21) near the fixing body (211). The ends of the plurality of limiting plates (29) are fixedly connected to the side surface of the second fixing pipe (210). A push head (22) is connected to the end of the first fixing pipe (21) far from the fixing body (211).

4. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 3, characterized in that: The push head (22) has an elliptical shell structure. A first partition plate (217) is fixedly connected to the inside of the push head (22). A plurality of equally-angularly distributed air inlet holes (23) are opened in the area of the side surface of the push head (22) far from the first fixing pipe (21). A plurality of equally-angularly distributed air outlet holes (28) are opened in the area of the side surface of the push head (22) near the first fixing pipe (21).

5. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 4, characterized in that: A third through hole (219) is penetrated and opened at the end of the first partition plate (217). A filter plate (218) is fixedly connected in the third through hole (219). The end of the second fixing pipe (210) is fixedly connected to the end face of the first partition plate (217).

6. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 3, characterized in that: A plurality of equally-angularly distributed first empty grooves (214) are opened at the end of the fixing body (211). The plurality of first empty grooves (214) are communicated with the inside of the first fixing pipe (21). The fixing body (211) has a ring structure. The inside of the fixing body (211) is communicated with the inside of the second fixing pipe (210).

7. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 6, characterized in that: The inner side of the connecting ring (26) is connected with a first diaphragm flowmeter (216) through a clamping groove structure near the end. The end of the first fixing pipe (21) is fixedly connected with a limiting ring (213). A limiting groove (212) is formed at the end of the fixing body (211). The limiting ring (213) is connected with the limiting groove (212) through threaded cooperation. A second empty groove (215) communicated with the first empty groove (214) is formed in the fixing body (211). The second empty groove (215) is of an annular structure. A second through hole (25) communicated with the second empty groove (215) is formed in the side surface of the fixing body (211). The second through hole (25) is connected with an oxygen supply device through a delivery pipe. The end of the connecting ring (26) is communicated with the external air through a delivery pipe.

8. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 1, characterized in that: The nasal cavity collection mechanism (3) includes two second air delivery pipes (31) fixedly connected to the end face of the main body ring (1). The two second air delivery pipes (31) are symmetrically arranged. The ends of the two second air delivery pipes (31) are respectively connected with plugs (33) through a clamping groove structure. A third air delivery pipe (32) is communicated and connected to the sides of the two second air delivery pipes (31). A first air delivery pipe (27) is communicated and connected to the side of one of the second air delivery pipes (31). The end of the first air delivery pipe (27) is communicated and connected to the inner side of the connecting ring (26).

9. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 8, characterized in that: Fourth through holes (36) are respectively formed through the ends of the two plugs (33). Second placement grooves (35) are respectively formed in the sides of the two plugs (33). Second flexible rings (34) are fixedly connected to the two plugs (33) respectively in the second placement grooves (35).

10. The bite block device for oxygen supply to the pharynx during the anesthesia process of gastroscopy according to claim 1, characterized in that: The main body ring (1) includes a propulsion shell (41). One end of the propulsion shell (41) is a rounded corner structure. The other end of the propulsion shell (41) is provided with a placement hole (411) penetrating therethrough. The end of the propulsion shell (41) is connected to the end of the first fixed tube (21). The inner side of the first fixed tube (21) communicates with the placement hole (411). A second partition (46) is fixedly connected inside the propulsion shell (41). The inner side of the second partition (46) is in close contact with the side of the second fixed tube (210). Four equally angularly distributed guiding holes (412) are provided penetrating through the end of the second partition (46). An isolation ring (47) is fixedly connected to the end of the second partition (46). The other end of the isolation ring (47) is connected to the propulsion shell (41). A sliding ring (48) is slidably arranged inside the isolation ring (47). Four connecting rods (44) that are slidably matched with the guiding holes (412) are fixedly connected to the end of the sliding ring (48). The ends of the four connecting rods (44) are respectively fixedly connected with dredging heads (45). A sixth through hole (43) that is slidably matched with the dredging head (45) is provided at the end of the propulsion shell (41). A number of fifth through holes (42) are provided at the end of the propulsion shell (41) close to the first fixed tube (21). A number of seventh through holes (49) are provided on the side of the isolation ring (47). A number of springs (410) are fixedly connected to the side of the second partition (46). The other ends of the number of springs (410) are fixedly connected to the sliding ring (48).

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