Airway protection device and method for preventing regurgitation and aspiration in painless gastrointestinal endoscope anesthesia

Abstract

The invention relates to the technical field of painless gastrointestinal endoscope airway protection, in particular to an airway protection device and method for preventing regurgitation and aspiration in painless gastrointestinal endoscope anesthesia. Comprising an inflation pipe, a breather pipe and a second gas collection tank. The inflation tube comprises a sleeve and a laryngeal mask, the laryngeal mask is correspondingly communicated with the inflation tube through the sleeve, and one side of the surface of the laryngeal mask is clamped to the esophagus; the breather pipe comprises an air outlet pipe, a first air collecting groove and a spraying hole, the interior of the first air collecting groove is correspondingly communicated with the breather pipe, and the spraying hole is communicated to the upper surface of the first air collecting groove; the second gas collecting groove comprises a connecting pipe and an air bag assembly, the interior of the second gas collecting groove is correspondingly communicated with the laryngeal mask through the connecting pipe, the air bag assembly is distributed on the outer surface of the second gas collecting groove and correspondingly communicated with the interior of the second gas collecting groove, and one side of the surface of the second gas collecting groove is clamped to the gas pipe. The laryngeal mask is pressed against the upper portion of the esophageal septum, the laryngeal mask and the laryngeal mask integrally play a role in positioning, clamping and blocking, and the problem of regurgitation and aspiration of the esophagus due to too intense reaction of a patient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of painless gastroenteroscopic airway protection, and in particular to an airway protection device and method for preventing reflux and aspiration during painless gastroenteroscopic anesthesia. Background Art

[0002] With the continuous advancement of medical technology and the improvement of people's requirements for medical comfort, painless gastroenteroscopy has been more and more widely used in clinical practice. This examination method allows patients to complete gastroenteroscopy painlessly under anesthesia, greatly improving patients' acceptance and compliance with the examination.

[0003] Currently available airway protection devices for preventing reflux aspiration during painless gastroenteroscopic anesthesia usually use a laryngeal mask to be clamped at the top of the front end of the esophagus, and then air is injected into the laryngeal mask through an inflation tube to expand it, forming a sealed space around the throat. However, there is an esophageal tracheal septum at the intersection of the esophagus and trachea. When the patient feels uncomfortable during the examination, the tracheoesophageal septum will be affected by the physiological reaction and push up and move. The laryngeal mask only clamps the top of the front end of the trachea, and cannot restrict the upward movement of the tracheoesophageal septum, which leads to a gap between the laryngeal mask and the laryngeal mask, causing some of the liquid refluxed from the esophagus to penetrate into the trachea, and cannot completely protect the airway. Summary of the invention

[0004] The purpose of the present invention is to provide an airway protection device and method for preventing reflux and aspiration during painless gastroenteroscopic anesthesia, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, one of the objects of the present invention is to provide an airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia, comprising an inflation tube, a ventilation tube and an air collecting tank; The inflation tube includes a sleeve and a laryngeal mask, the laryngeal mask is connected to the inflation tube through the sleeve, and one side of the surface of the laryngeal mask is clamped at the esophagus; The vent pipe includes an air outlet pipe, an air collecting groove 1 and a spray hole, the interior of the air collecting groove 1 is connected to the vent pipe correspondingly, and the spray hole is connected to the upper surface of the air collecting groove 1; The gas collecting tank 2 includes a connecting pipe and an airbag assembly. The interior of the gas collecting tank 2 is connected to the laryngeal mask via the connecting pipe. The airbag assembly is distributed on the outer surface of the gas collecting tank 2 and is connected to the interior of the gas collecting tank 2. One side of the surface of the gas collecting tank 2 is clamped at the trachea position. When the laryngeal mask is stuck in the esophagus, the inside of the laryngeal mask is inflated by using the inflation tube, and the air is input into the inside of the gas collecting tank 2 through the connecting tube, so that the gas collecting tank 2 expands and is stuck in the trachea. Since the airbag assembly and the inside of the gas collecting tank 2 are correspondingly connected, the airbag assembly expands with air to position the laryngeal mask and the gas collecting tank 2 that are stuck in the esophagus and trachea. At the same time, the air outlet pipe injects external oxygen and anesthetic gas into the inside of the gas collecting tank 1, and discharges it from the set spray hole position, and the spray hole position and the inside of the trachea are correspondingly connected, so that oxygen and anesthetic gas are input into the patient's trachea.

[0006] As a further improvement of the technical solution, the sleeve is fixedly sleeved on one side of the outer surface of the inflation tube, and a groove is provided on one side of the surface of the laryngeal mask.

[0007] As a further improvement of the present technical solution, the connecting tube is fixedly connected to the center position of the upper surface of the laryngeal mask, the second air collecting groove is fixedly connected to the upper surface of the connecting tube, the upper surface of the second air collecting groove is fixedly connected to a limiting air bag, one side of the surface of the second air collecting groove is fixedly connected to a blocking air bag, an extrusion air bag is installed on the upper surface of the blocking air bag, and an extrusion groove is opened on one side of the upper surface of the second air collecting groove.

[0008] As a further improvement of the technical solution, guide rails are fixedly installed on both sides of the slot surface, a slide groove is opened at the center of the guide rail surface, and a card plate is slidably connected to the slide groove surface.

[0009] As a further improvement of the present technical solution, air collecting groove one is arranged at the inner top of air collecting groove two, and the air inside the laryngeal mask is collected inside the air collecting groove one through a connecting tube. When the laryngeal mask is stuck in the esophagus, the air bag absorbs part of the air in the air collecting groove and straightens, contacting the upper surface of the esophageal tracheal septum at the junction of the esophagus and trachea.

[0010] As a further improvement of the technical solution, the laryngeal mask is against the upper surface of the esophageal entrance, so that the clamping plate and the esophageal tracheal septum are in contact, and the sliding groove is adjusted on the guide rail surface.

[0011] As a further improvement of the present technical solution, the blocking airbag moves upward through the esophageal tracheal septum. Since the extrusion airbag and the blocking airbag are connected inside, and the blocking airbag bends upward and deforms, the air inside the blocking airbag is transmitted to the inside of the extrusion airbag, driving the extrusion airbag to be extruded in the direction of the extrusion groove, causing one side of the second air collecting groove to be extruded and deformed, and the inside of the limiting airbag and the inside of the second air collecting groove are connected, so that the air inside the second air collecting groove is transmitted to the inside of the limiting airbag, causing the limiting airbag to straighten upward and press against the top of the trachea.

[0012] As a further improvement of the present technical solution, the inflation tube and the ventilation tube are made of polyurethane material, and a camera is provided at the front end of the laryngeal mask.

[0013] The second object of the present invention is to provide an airway protection method for preventing reflux aspiration during painless gastroenteroscopic anesthesia, comprising any of the above-mentioned airway protection devices for preventing reflux aspiration during painless gastroenteroscopic anesthesia, comprising the following steps: S1. The medical staff first inserts the laryngeal mask into the patient's mouth and inserts it along the midline of the mouth until resistance is encountered, then the insertion can be stopped; S2. After the lower part of the laryngeal mask is clamped to the position above the entrance of the esophagus of the patient, air is injected into the laryngeal mask through the inflation tube to expand the laryngeal mask. At the same time, part of the air is transmitted to the inside of the second air collecting groove through the connecting tube. Since the second air collecting groove is located above the laryngeal mask, it can be directly clamped to the upper part of the tracheal entrance after the second air collecting groove is expanded. S3. The bottom of the laryngeal mask is connected to the tracheoesophageal septum. The provided clamping plate can adjust the penetration depth of the laryngeal mask under the sliding action of the slide groove, so as to facilitate the blocking air bag to be correspondingly clamped above the tracheoesophageal septum; S4. Use the ventilation tube to inject oxygen and anesthetic gas into the interior of gas collecting tank 1. When the air is injected into gas collecting tank 2 and expands, the set spray holes directly correspond to the inside of the trachea, and the spray holes are connected to the inside of gas collecting tank 1. Therefore, oxygen and anesthetic gas can be transmitted to the inside of the trachea through the spray holes to ensure the patient's normal breathing.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The airway protection device for preventing reflux aspiration during painless gastroenteroscopic anesthesia has a blocking air bag and an air collecting groove one that is connected to the inside and pressed against the top of the esophageal tracheal septum, and has a positioning, clamping and blocking effect with the laryngeal mask as a whole, thereby reducing the problem of reflux aspiration in the esophagus due to excessive reaction of the patient. The interior of the limiting air bag is connected to the interior of the air collecting groove two, and the air in the air collecting groove two is transported to the interior of the limiting air bag, so that the limiting air bag is straightened upward and pressed against the top of the trachea, and the air collecting groove one is also squeezed, so as to appropriately increase the input amount of oxygen and anesthetic gas to the spray hole, and suppress the patient's throat reflex and the body's stress response.

[0015] 2. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia can facilitate the medical staff to push the laryngeal mask through the camera. The slide groove can be used to slide and adjust on the guide rail surface to adjust the tightness of the laryngeal mask. It can be adjusted according to the different lengths of the tracheoesophageal septum of different patients to avoid discomfort to the patient during the examination.

[0016] 3. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia injects oxygen and anesthetic gas into the second gas collecting tank through a set ventilation tube, and the second gas collecting tank is connected to the spray hole in correspondence, and the spray hole and the trachea are in corresponding positions, so oxygen and anesthetic gas can be directly transmitted to the trachea through the spray hole to ensure that the patient breathes normally during the examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection structure between the inflation tube and the laryngeal mask of the present invention; Figure 2 It is a schematic diagram of the connection structure of the vent pipe and the air outlet pipe of the present invention; Figure 3 It is a schematic diagram of the spray hole structure of the present invention; Figure 4 It is a schematic diagram of the connection structure between the laryngeal mask and the second air collecting tank, and the spray hole and the first air collecting tank of the present invention; Figure 5 It is a schematic diagram of the connection structure of the gas collecting groove 2, the limiting airbag and the blocking airbag of the present invention; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at A in the middle; Figure 7 for Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 8 It is a schematic diagram of the connection structure of the air filling pipe and the air collecting tank, the air vent pipe and the spray hole of the present invention.

[0018] The meaning of each number in the figure is: 100, inflation tube; 101, sleeve; 102, laryngeal mask; 103, slot; 200, ventilation pipe; 201, air outlet pipe; 202, spray hole; 203, air collecting tank 1; 300, air collecting tank 2; 301, connecting pipe; 302, limiting airbag; 303, blocking airbag; 304, extrusion airbag; 305, extrusion tank; 306, guide rail; 307, slide groove; 308, pallet. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 - Figure 4As shown, one of the purposes of this embodiment is to provide an airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia, including an inflation tube 100, a ventilation tube 200 and an air collecting tank 300; the inflation tube 100 includes a sleeve 101 and a laryngeal mask 102, the laryngeal mask 102 is connected to the inflation tube 100 through the sleeve 101, and one side of the surface of the laryngeal mask 102 is clamped at the esophagus; the ventilation tube 200 includes an outlet pipe 201, an air collecting tank 203 and a spray hole 202, the interior of the air collecting tank 203 is connected to the ventilation tube 200, and the spray hole 202 is connected to the upper surface of the air collecting tank 203.

[0021] The second gas collecting tank 300 includes a connecting pipe 301 and an airbag assembly. The interior of the second gas collecting tank 300 is connected to the laryngeal mask 102 via the connecting pipe 301. The airbag assembly is distributed on the outer surface of the second gas collecting tank 300 and is connected to the interior of the second gas collecting tank 300. One side of the surface of the second gas collecting tank 300 is clamped at the trachea position. When the laryngeal mask 102 is stuck in the esophagus, the inflation tube 100 is used to inflate the inside of the laryngeal mask 102, and the air is input into the inside of the gas collecting groove 300 through the connecting tube 301, so that the gas collecting groove 300 expands and is stuck in the trachea. Since the airbag assembly and the inside of the gas collecting groove 300 are correspondingly connected, the airbag assembly expands with air to position the laryngeal mask 102 and the gas collecting groove 300 that are stuck in the esophagus and trachea. At the same time, the air outlet pipe 201 injects external oxygen and anesthetic gas into the inside of the gas collecting groove 1 203, and discharges it from the set position of the spray hole 202, and the position of the spray hole 202 is correspondingly connected to the inside of the trachea, so that oxygen and anesthetic gas are input into the patient's trachea.

[0022] The laryngeal mask 102 is stuck above the entrance of the esophagus along the patient's oral cavity, and the mask body surrounds the larynx. The laryngeal mask 102 is inflated by the inflation tube 100 to form a sealed space around the larynx. At the same time, the connecting tube 301 can transmit the air inside the laryngeal mask 102 to the inside of the air collecting groove 2 300. Since the position of the air collecting groove 2 300 corresponds to the position above the entrance of the trachea, when the air collecting groove 2 300 is inflated, a sealed space can be formed above the entrance of the trachea. The airbag component and the inside of the air collecting groove 2 300 are also corresponding. When the patient feels uncomfortable during the examination, the movement of the tracheoesophageal septum is effectively reduced to prevent a large amount of liquid from flowing back from the esophagus. At the same time, a small movement of the tracheoesophageal septum can produce an upward squeezing force on the airbag assembly, and also produce squeezing force on the oxygen and anesthetic gas in the gas collecting tank 203, thereby increasing the amount of oxygen and anesthetic gas transmitted to the inside of the trachea by the spray hole 202, thereby suppressing the patient's throat reflex and the body's stress response.

[0023] It should be noted that the content of oxygen and anesthetic gas in the gas collecting tank 203 meets the standard content of anesthetic gas for patients undergoing gastrointestinal endoscopy, and the maintenance dose is 4-12 mg / kg / h (mg represents the weight of the drug, kg represents the patient's weight, and h represents time).

[0024] Therefore, based on the above structure, combined with Figure 1 The figure further discloses the structure of the inflation tube 100 , where the sleeve 101 is fixedly sleeved on one side of the outer surface of the inflation tube 100 , and a slot 103 is provided on one side of the surface of the laryngeal mask 102 .

[0025] Furthermore, the medical staff inserts the laryngeal mask 102 from the oral position, so that the lower surface of the laryngeal mask 102 is stuck in the position above the esophagus, and the upper surface of the laryngeal mask 102 is stuck in the larynx position, and the upper surface of the slot 103 is engaged with the surface of the tracheoesophageal septum.

[0026] It should be noted that the inflation tube 100 and the ventilation tube 200 are made of polyurethane material, which has good flexibility and elasticity, can keep the pipeline unobstructed when bent, and also has good corrosion resistance, and can withstand the acidic environment in the stomach and intestines and the erosion of some cleaning and disinfection liquids.

[0027] The improvement lies in: using the card slot 103 to position and clamp the front end of the tracheoesophageal septum, so that the front end of the laryngeal mask 102 can be effectively clamped at the uppermost position of the front end of the esophagus, and using the inflation tube 100 and the ventilation tube 200 to inflate the laryngeal mask 102 and the airbag assembly, and inject oxygen and anesthetic gas into the patient's gas, to ensure that the patient breathes normally during the gastrointestinal endoscopy.

[0028] Based on the above structure, combined with Figure 4-Figure 8 As shown, the structure of the airbag assembly is further disclosed, the connecting tube 301 is fixedly connected to the center position of the upper surface of the laryngeal mask 102, the air collecting groove 300 is fixedly connected to the upper surface of the connecting tube 301, the upper surface of the air collecting groove 300 is fixedly connected to the limiting airbag 302, one side of the surface of the air collecting groove 300 is fixedly connected to a blocking airbag 303, the upper surface of the blocking airbag 303 is installed with an extrusion airbag 304, one side of the upper surface of the air collecting groove 300 is provided with an extrusion groove 305, guide rails 306 are fixedly installed on both sides of the surface of the card slot 103, a slide groove 307 is provided at the center position of the surface of the guide rail 306, and a card plate 308 is slidably connected to the surface of the slide groove 307.

[0029] Furthermore, after the laryngeal mask 102 is clamped at the front end of the tracheoesophageal septum, the laryngeal mask 102 is inflated by the inflation tube 100, and the provided connecting tube 301 can transmit the air inside the laryngeal mask 102 to the inside of the air collecting groove 300 to expand the air collecting groove 300. Since the extrusion air bag 304 is connected to the inside of the air collecting groove 300, and the extrusion air bag 304 is connected to one side of the surface of the air collecting groove 300 and is located above the tracheoesophageal septum, the gas inside the air collecting groove 300 is squeezed and transmitted to the inside of the extrusion air bag 304, causing it to expand and straighten, so that it can be parallel to the tracheoesophageal septum and fit above the tracheoesophageal septum.

[0030] When the tracheoesophageal septum moves upward, the extrusion airbag 304 is squeezed upward, which can correspond to the surface of the extrusion groove 305, causing the air collecting groove 300 to deform, and the limiting airbag 302 is connected to the inside of the air collecting groove 300. The limiting airbag 302 is arranged above the air collecting groove 300, and the same as the extrusion airbag 304, so the limiting airbag 302 can be straightened and pressed against the uppermost part of the front end of the trachea, avoiding the tracheoesophageal septum from shifting upward due to physiological response, causing the laryngeal mask 102 to shift downward as a whole, causing the refluxed liquid in the esophagus to flow into the inside of the trachea from the gap between the tracheoesophageal septum and the laryngeal mask 102.

[0031] The improvement lies in that when the tracheoesophageal septum moves upward, it can directly contact the squeezing airbag 304, which has a certain limiting effect on the upward movement of the tracheoesophageal septum. When the upward movement of the tracheoesophageal septum is too large, the squeezing airbag 304 will exert a squeezing force on the gas collecting groove 2 300, and the gas collecting groove 1 203 will also be squeezed, thereby increasing the amount of oxygen and anesthetic gas transmitted to the inside of the trachea by the spray hole 202, thereby suppressing the patient's throat reflex and the body's stress response.

[0032] The second object of the present invention is to provide an airway protection method for preventing reflux aspiration during painless gastroenteroscopic anesthesia, comprising any of the above-mentioned airway protection devices for preventing reflux aspiration during painless gastroenteroscopic anesthesia, comprising the following steps: S1. The medical staff first puts the laryngeal mask 102 into the patient's oral cavity and inserts it along the midline of the oral cavity until resistance is encountered. The insertion is stopped and the card slot 103 is used to card it under the esophageal tracheal septum between the esophagus and the trachea. At the same time, the card plate 308 is directly in contact with the esophageal tracheal septum. The camera is convenient for the medical staff to push the laryngeal mask 102. The slide groove 307 can be used to slide and adjust on the surface of the guide rail 306 to adjust the tightness of the laryngeal mask 102. It can be adjusted according to the different lengths of the tracheal esophageal septum of different patients to avoid discomfort to the patient during the examination.

[0033] S2. After the lower part of the laryngeal mask 102 is clamped on the position above the entrance of the patient's esophagus, the inflation tube 100 is used to inject air into the laryngeal mask 102 to expand the laryngeal mask 102. At the same time, part of the air is transmitted to the inside of the air collecting groove 300 through the connecting tube 301. Since the position of the air collecting groove 300 is above the laryngeal mask 102, it can be directly clamped on the top of the tracheal entrance after the air collecting groove 300 is expanded.

[0034] S3. The bottom of the laryngeal mask 102 is connected to the tracheoesophageal septum. The provided clamping plate 308 can adjust the penetration depth of the laryngeal mask 102 under the sliding action of the slide groove 307, so as to facilitate the blocking airbag 303 to be correspondingly stuck above the tracheoesophageal septum. When the tracheoesophageal septum moves too much due to the patient's physiological reaction and lifts the blocking airbag 303 upward, the extrusion airbag 304 is used to squeeze in the direction of the extrusion groove 305, so that one side of the air collecting groove 2 300 is squeezed and deformed, and the interior of the limiting airbag 302 is connected with the interior of the air collecting groove 2 300, and then the air in the air collecting groove 2 300 is transported to the interior of the limiting airbag 302, so that the limiting airbag 302 is straightened upward and pressed against the top of the trachea, and the air collecting groove 1 203 is also squeezed, so as to appropriately increase the input amount of oxygen and anesthetic gas to the spray hole 202, and suppress the patient's throat reflex and the body's stress response.

[0035] S4. Use the ventilation tube 200 to inject oxygen and anesthetic gas into the gas collecting tank 1 203. When the gas collecting tank 2 300 is expanded after being injected with air, the set spray hole 202 directly corresponds to the inside of the trachea, and the spray hole 202 is connected to the inside of the gas collecting tank 1 203. Therefore, oxygen and anesthetic gas can be transmitted to the inside of the trachea through the spray hole 202 to ensure the normal breathing of the patient.

[0036] 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. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia, characterized by: It comprises an air filling pipe (100), a vent pipe (200) and a second air collecting tank (300); The inflation tube (100) comprises a sleeve (101) and a laryngeal mask (102); the laryngeal mask (102) is connected to the inflation tube (100) via the sleeve (101) and one side of the surface of the laryngeal mask (102) is clamped at the esophagus; The ventilation pipe (200) comprises an air outlet pipe (201), an air collecting groove (203) and a spray hole (202); the interior of the air collecting groove (203) is correspondingly connected to the ventilation pipe (200); and the spray hole (202) is connected to the upper surface of the air collecting groove (203); The second gas collecting groove (300) comprises a connecting pipe (301) and an airbag assembly. The interior of the second gas collecting groove (300) is connected to the laryngeal mask (102) via the connecting pipe (301). The airbag assembly is distributed on the outer surface of the second gas collecting groove (300) and is connected to the interior of the second gas collecting groove (300). One side of the surface of the second gas collecting groove (300) is clamped at the trachea position. When the laryngeal mask (102) is stuck in the esophagus, the laryngeal mask (102) is inflated using the inflation tube (100), and air is input into the second gas collecting groove (300) through the connecting tube (301), so that the second gas collecting groove (300) expands and is stuck in the trachea. Since the airbag assembly and the inside of the second gas collecting groove (300) are correspondingly connected, the airbag assembly is expanded by air to position the laryngeal mask (102) and the second gas collecting groove (300) that are stuck in the esophagus and trachea. At the same time, the air outlet tube (201) injects external oxygen and anesthetic gas into the inside of the first gas collecting groove (203), and discharges them from the set spray hole (202). The spray hole (202) is correspondingly connected to the inside of the trachea, so that oxygen and anesthetic gas are input into the patient's trachea.

2. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 1, characterized in that: The sleeve (101) is fixedly sleeved on one side of the outer surface of the inflation tube (100), and a clamping groove (103) is provided on one side of the surface of the laryngeal mask (102).

3. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 2, characterized in that: The connecting tube (301) is fixedly connected to the center position of the upper surface of the laryngeal mask (102); the second air collecting groove (300) is fixedly connected to the upper surface of the connecting tube (301); the upper surface of the second air collecting groove (300) is fixedly connected to a limiting air bag (302); a blocking air bag (303) is fixedly connected to one side of the surface of the second air collecting groove (300); an extrusion air bag (304) is installed on the upper surface of the blocking air bag (303); and an extrusion groove (305) is provided on one side of the upper surface of the second air collecting groove (300).

4. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 2, characterized in that: Guide rails (306) are fixedly mounted on both sides of the surface of the card slot (103), a slide groove (307) is provided at the center of the surface of the guide rail (306), and a card plate (308) is slidably connected to the surface of the slide groove (307).

5. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 4, characterized in that: The air collecting groove one (203) is arranged at the top of the inner side of the air collecting groove two (300), and the air inside the laryngeal mask (102) is collected inside the air collecting groove one (203) through the connecting pipe (301). When the laryngeal mask (102) is stuck in the esophagus, the blocking air bag (303) absorbs part of the air in the air collecting groove one (203) and straightens, contacting the upper surface of the esophageal tracheal septum at the junction of the esophagus and the trachea.

6. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 5, characterized in that: The laryngeal mask (102) is pressed against the upper surface of the esophageal inlet, so that the clamping plate (308) is in contact with the esophageal tracheal septum, and is slidably adjusted on the surface of the guide rail (306) through the slide groove (307).

7. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 6, characterized in that: The blocking airbag (303) moves upward through the esophageal tracheal septum. Since the extrusion airbag (304) and the blocking airbag (303) are connected, and since the blocking airbag (303) is bent upward and deformed, the air inside the blocking airbag (303) is transmitted to the inside of the extrusion airbag (304), driving the extrusion airbag (304) to be extruded in the direction of the extrusion groove (305), so that one side of the second air collecting groove (300) is squeezed and deformed, and the interior of the limiting airbag (302) and the interior of the second air collecting groove (300) are connected, and then the air inside the second air collecting groove (300) is transmitted to the inside of the limiting airbag (302), so that the limiting airbag (302) is straightened upward and against the uppermost part of the trachea.

8. The airway protection device for preventing reflux and aspiration during painless gastroenteroscopic anesthesia according to claim 1, characterized in that: The inflation tube (100) and the ventilation tube (200) are made of polyurethane material, and a camera is arranged at the front end of the laryngeal mask (102).

9. An airway protection method for preventing reflux aspiration during painless gastroenteroscopic anesthesia, using the airway protection device for preventing reflux aspiration during painless gastroenteroscopic anesthesia according to any one of claims 1 to 8, characterized in that: The steps include: S1. The medical staff first inserts the laryngeal mask (102) into the patient's oral cavity and inserts it along the midline of the oral cavity until resistance is encountered, and then stops inserting; S2. After the lower part of the laryngeal mask (102) is clamped to the position above the entrance of the patient's esophagus, air is injected into the laryngeal mask (102) through the inflation tube (100) to expand the laryngeal mask (102). At the same time, part of the air is transmitted to the interior of the second air collecting groove (300) through the connecting tube (301). Since the second air collecting groove (300) is located above the laryngeal mask (102), after the second air collecting groove (300) is expanded, it can be directly clamped to the upper part of the tracheal entrance; S3, the lowermost part of the laryngeal mask (102) is clamped with the tracheoesophageal septum, and the clamping plate (308) can adjust the penetration depth of the laryngeal mask (102) under the sliding action of the slide groove (307), so as to facilitate the blocking airbag (303) to be clamped above the tracheoesophageal septum; S4. Oxygen and anesthetic gas are injected into the first gas collecting tank (203) by using the ventilation tube (200). When the second gas collecting tank (300) is expanded after being injected with air, the spray hole (202) is directly corresponding to the inside of the trachea, and the spray hole (202) is connected to the inside of the first gas collecting tank (203). Therefore, oxygen and anesthetic gas can be transmitted to the inside of the trachea through the spray hole (202), thereby ensuring the normal breathing of the patient.

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