CN113694333B - Multifunctional air bag sputum suction laryngeal mask - Google Patents

Abstract

The invention discloses a multifunctional air bag sputum suction laryngeal mask, which belongs to the field of medical instruments and comprises a mask body, an air ventilation handle and a breathing interface. The upper part of the cover body is provided with a sealing air bag, and the two sides of the lower part of the cover body are isolated from the cover body cavity and provided with drainage grooves which are communicated with a gastric decompression pipeline through a drainage connecting pipe. The ventilation handle is internally provided with a ventilation pipeline communicated with the cover body cavity, and is also provided with an air passage operation channel communicated with the cover body cavity, and the air passage operation channel is provided with a sealing valve and a plugging body. The invention can clean oral sputum while keeping ventilation, can be put into a stomach tube through the mouth, can replace a tracheal cannula under mechanical ventilation, can carry out airway examination and treatment, and has simple structure and strong practicability.

Description

Multifunctional air bag sputum suction laryngeal mask

Technical Field

The invention belongs to the field of medical instruments, relates to an anesthesia airway management tool, and particularly relates to a multifunctional air bag sputum suction laryngeal mask.

Background

The laryngeal mask is an emerging respiratory management tool, is successfully developed and used in clinic in the middle of the 80 s, and is introduced into China in the 90 s. Clinical research shows that the laryngeal mask has the advantages of being simple to operate, high in tube placing success rate, stable in hemodynamics, few in medicine application in an induction period and few in occurrence of complications, greatly improves effectiveness and safety, and is gradually popularized and applied in clinical anesthesia.

The related sputum suction laryngeal mask patents are designed and applied in 2018 by our company, and through research, development and trial, an excellent sputum suction function is realized, the use safety of the laryngeal mask is greatly improved, and meanwhile, the defects of the laryngeal mask are still more obvious: (1) the non-air-bag mask body has poor deformation adaptability, and has good sealing performance when the size of the non-air-bag mask body is matched with the throat cavity of a patient, and the sealing performance is reduced when the non-air-bag mask body is slightly removed, even the ventilation fails. (2) Airway examination and surgery have poor airway sealing and even require interruption of respiratory support. (3) When the non-air bag cover body is placed in the oral cavity of a patient, the tongue body is easy to clamp, so that the placement is extremely difficult. (4) The non-air bag cover body has large supporting pressure on the throat part, cannot realize pressure sensing and easily causes sore throat of a patient. (5) The mechanical respiratory support is required to be interrupted when the method is used for the inspection in the air passage, and the method is particularly disadvantageous to the air passage operation and cannot be used for complex interventional operation in the air passage. (6) The throat cover handle has too many internal pipelines, thereby increasing the development difficulty and the production cost of the mold and shortening the service life of the mold. (7) It cannot be used for tracheal exchange under respiratory support.

In order to solve the problems, the product is further adjusted, and the defects can be avoided.

Disclosure of Invention

The invention aims to provide a multifunctional air bag sputum suction laryngeal mask to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a multifunctional air bag sputum suction laryngeal mask comprises a mask body, a ventilation handle and a breathing interface in sequence from the head end to the tail end, wherein a ventilation pipeline hermetically communicated with a mask cavity of the mask body is arranged through the breathing interface and the ventilation handle in sequence. The upper half part of the cover body is annularly provided with a sealed air bag ring, and the sealed air bag ring is provided with an inflation tube and an inflation valve. The stomach pressure reducing pipeline that sets up in proper order through ventilation handle and basal portion, stomach pressure reducing pipeline head end opening sets up in cover body head end, and stomach pressure reducing pipeline is kept apart with ventilation pipeline and cover chamber. The lower half part of the cover body is a base part, and two sides of the base part are respectively isolated from the cover cavity of the cover body to form drainage grooves. Drainage connecting pipes are respectively arranged at the head end of the base part to ensure that the drainage grooves are communicated with the gastric decompression pipeline.

Further, it sets up air flue operation pipeline to run through air handle and base portion afterbody in proper order, air flue operation pipeline and cover chamber intercommunication, air flue operation pipeline head end opening sets up in the cover intracavity of base portion afterbody. The air passage operation pipeline is provided with a first cover plug at an opening at the tail part, and is provided with a first conical sealing valve.

The head end of the breathing interface is provided with a ventilation socket, a stomach decompression socket or/and an air passage operation socket which are used for being inserted into the inner cavity of the tail end of the ventilation handle, and the tail end of the ventilation handle can be hermetically communicated with a ventilation pipeline, a stomach decompression pipeline or/and an air passage operation pipeline. And a first breathing machine interface is arranged at the tail end of the breathing interface.

And a second respirator interface is arranged on the side of the respiratory interface, a second conical sealing valve and a second cover plug which are matched are arranged at the opening of the first respirator interface at the tail part of the respiratory interface, and the second cover plug can be matched and hermetically connected at the tail end of the second conical sealing valve.

The second respirator interface is arranged on the side of the respiratory interface, a second conical sealing valve, a third conical sealing valve and a second cover plug which are matched are arranged at the opening of the first respirator interface at the tail part of the respiratory interface, and the third conical sealing valve and the second cover plug can be matched and sealed with each other and are connected to the tail end of the second conical sealing valve. The diameter of the conical opening of the second conical sealing valve is 4-6mm, and the diameter of the conical opening of the third conical sealing valve is 2-5mm.

The connection of the breathing interface and the second breathing machine interface on the side comprises an annular sealing clamp which enables the second breathing machine interface to rotate 360 degrees on the side of the breathing interface.

The drainage connecting pipe is provided with a hollowed-out area at one end part close to the gastric decompression pipeline, and the hollowed-out area of the drainage connecting pipe at the two sides is wrapped to form a gastric decompression hollowed-out section similar to the inner cavity of the gastric decompression pipeline.

The hollow area is arranged as a cavity area at one side of the drainage connecting pipe, which is far away from the sealing air bag ring, and the hollow area comprises a horizontal fracture area.

The base part is provided with a first bump at the opening of the air passage operation pipeline, so that the air passage operation pipeline is tilted to form an angle a at the first one third equal division of the long axis of the opening plane of the sealing air bag ring in the central axis of the opening, and the angle a is 35-45 degrees. The base part is provided with a second bump at the opening of the ventilation pipeline, so that the central axis of the opening of the ventilation pipeline points to the front one-third of the long axis of the opening plane of the sealed air bag ring and tilts to form an angle b, the angle b ranges from 35 degrees to 45 degrees, and anti-blocking grooves are formed in the two sides of the second bump along the direction of the long axis of the cover body.

The height of the lower edge of the stomach decompression pipeline at the cross communication position with the drainage connecting pipe is the same, or the lower edge of the stomach decompression pipeline is lower than the lower edge of the drainage connecting pipe.

The side of the breathing interface is communicated with a carbon dioxide monitoring interface and a matched sealing cover, and the sealing cover can block the carbon dioxide monitoring interface. And a sealing cover pile isolated from the breathing interface is arranged beside the carbon dioxide monitoring interface, and the sealing cover can be temporarily fixed on the sealing cover pile.

The utility model provides a phlegm laryngeal mask is inhaled to multi-functional gasbag still includes the drainage pipeline, the drainage pipeline is including the sealed drainage hose, drainage joint pipe, drainage extension pipe and the negative pressure interface that communicates in proper order. The outer diameter of the drainage hose is smaller than the inner diameter of the gastric decompression pipeline, and the length of the drainage hose is matched with that of the gastric decompression pipeline.

The drainage card joint pipe comprises a decompression connecting pipe, a plurality of decompression grooves are arranged on the periphery of the decompression connecting pipe, and the decompression grooves can be clamped into the tail end opening of the gastric decompression pipeline in a matching manner.

The invention discloses a multifunctional air bag sputum suction laryngeal mask, wherein a sealing air bag is arranged on the upper half part of a mask body, the size of the air bag can be adjusted through the inflation quantity to adapt to the size of the throat of a patient, drainage grooves are arranged on two sides of the lower half part of the mask body and isolated from a mask body cavity, and sputum in the oral cavity can be cleaned through a stomach decompression pipeline which is communicated in a sealing mode, so that backflow and aspiration caused by sputum accumulation are avoided. Airway examination and interventional procedures under respiratory support can be performed through the airway manipulation circuit. The sealing valve is arranged on the breathing interface, the breathing machine interface is arranged on the side of the breathing interface, so that the complicated respiratory tract intervention operation can be implemented, and the trachea cannula can be replaced under the ventilation of the laryngeal mask. The invention can synchronously clean oral sputum while keeping mechanical ventilation, can be put into a stomach tube through the mouth, can carry out airway examination and treatment, and can replace a tracheal cannula, and has simple structure and strong practicability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram and sectional views A, B, C, D, E, and F of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 3 is a schematic diagram of a third embodiment of the present invention from two different perspectives;

figure 4 is a schematic diagram of the gastric decompression line, drainage connector and airway manipulation line shown in figure 1 of the present invention.

FIG. 5 is a schematic structural diagram of a first embodiment of a respiratory interface of the present invention;

FIG. 6 is a partial exploded view of the first respiratory interface of FIG. 4 with a second respiratory interface and a capnometry interface positioned to the side of the first respiratory interface in accordance with the present invention;

FIG. 7 is a schematic view of the mask body of the present invention showing the structure of the cross-section G and H of the gastric decompression hollow section and the transverse bars;

FIG. 8 is a schematic structural view of the mask body showing the angle a, the angle b, the first bump, the second bump, the anti-blocking groove and the local sections I, J and K;

FIG. 9 is a schematic view of the structure of the drainage line and the relief groove of the present invention for an L-section.

The number identification corresponds to the name: 1. a cover body; 10. a base portion; 101. a drainage groove; 102. a drainage connecting pipe; 103. a hollow-out area; 104. a first bump; 105. a second bump; 106. an anti-blocking groove; 107. a horizontal bar; 11. a housing cavity; 111. an inflation tube; 112. an inflation valve; 12. sealing the balloon ring; 13. the points of the first one third of the long axis of the opening plane of the sealing air bag ring are equally divided; 2. a ventilation handle; 21. inserting into the oral cavity; 3. a respiratory interface; 30. a carbon dioxide monitoring interface; 31. a vent spigot; 32. a gastric decompression socket; 33. an airway manipulation socket; 34. a first ventilator interface; 35. a second ventilator interface; 36. a second conical seal valve; 37. a second lid plug; 38. a third conical sealing valve; 39. sealing the cover; 39', capping the stakes; 4. a vent line; 5. a drainage connecting pipe; 6. a gastric decompression line; 61. a gastric decompression hollow section; 7. an airway operation line; 71. a first lid plug; 72. a first conical sealing valve; 8. a drainage line; 81. a drainage hose; 82. a drainage bayonet tube; 83. a drainage extension tube; 84. a negative pressure interface; 85. connecting a pressure reducing pipe; 86. a pressure relief tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, 2, 3 and 4, the multifunctional air bag sputum suction laryngeal mask comprises a mask body 1, an air vent handle 2 and a breathing interface 3 from the head end to the tail end in sequence, wherein an air vent pipeline 4 communicated with a mask cavity 11 of the mask body 1 in a sealing manner is arranged to sequentially penetrate through the breathing interface 3 and the air vent handle 2. The upper half part of the mask body 1 is annularly provided with a sealed air bag ring 12, and the sealed air bag ring 12 is provided with an inflation tube 111 and an inflation valve 112. This is the basic structure of existing laryngeal masks. After the anesthetic is given, the patient enters an anesthetic muscle relaxation state, the oral cavity of the patient is opened, the cover body 1 and the front part of the ventilation handle 2 are placed into the oral cavity of the patient, the head end of the cover body 1 is supported at the esophagus opening of the patient, at the moment, the cover cavity 11 formed by the cover body 1 is surrounded around the glottis, a proper amount of gas is filled into the cover body 1 (namely the sealed air bag ring 12) through the inflation valve 112 and the inflation tube 111, and the surface of the annular air bag at the upper part of the cover body 1 (namely the sealed air bag ring 12) is fully contacted with soft tissues around the glottis, so that the sealing effect is formed. The breathing interface 3 is connected with a respirator, and the respirator forms a sealed gas passage through the breathing interface 3, the ventilation handle 2 and the cover cavity 11 of the cover body 1 (namely the sealed air bag ring 12), so that the breathing support for a patient can be realized.

The stomach decompression pipeline 6 sequentially penetrates through the ventilation handle 2 and the base part 10, the opening at the head end of the stomach decompression pipeline 6 is arranged at the head end of the cover body 1, and the stomach decompression pipeline 6 is isolated from the ventilation pipeline 4 and the cover cavity 11. When the laryngeal mask is used for ventilation, gas can easily enter the stomach through the esophagus, so that the stomach is expanded, and the visual field near the stomach in certain abdominal cavities is influenced. At this time, the stomach tube can be placed into the stomach cavity of a patient through the stomach pressure reducing pipeline 6 to suck gas in the stomach, so that the expanded stomach body is shriveled, and the operation visual field is convenient to expose.

The scheme is different from the prior laryngeal mask, the upper half part of the mask body 1 of the laryngeal mask is provided with a sealing air sac ring 12, and the lower half part of the mask body 1 is provided with a base part 10, so that the height of the sealing air sac ring 12 is smaller than that of the laryngeal mask on the market, the sealing air sac ring only occupies the upper half part of the mask body 1, and the optimal height is 1/3-1/2 of the height of the mask body 1. The smaller sealing balloon ring 12 has no effect on the laryngeal mask seal and the taller base portion 10 has sufficient space to provide a corresponding structure for negative pressure sputum clearance. The method specifically comprises the following steps: the lower half part of the cover body 1 is a base part 10, and two sides of the base part 10 are respectively isolated from a cover cavity 11 of the cover body 1 to form drainage grooves 101. The head end of the base part 10 is respectively provided with a drainage connecting pipe 5 to lead the drainage groove 101 to be communicated with the stomach decompression pipeline 6.

The laryngeal mask is suitable for a patient in a supine position, and during specific work, the head end of the laryngeal mask body 1 is tightly clamped at the opening of an esophagus, so that the lowest cavity in the throat cavity is actually positioned at a position which is 2-3cm away from the head end of the laryngeal mask body 1. In practice, this is also the connection between the drainage groove 101, which is semi-open on both sides of the base part 10, and the drainage connecting tube 5. In actual use, the back of the laryngeal mask is tightly attached to the laryngeal part of the throat of a patient, so that the laryngeal mask and the mucous membrane of the laryngeal part of the throat have no cavity. The upper annular balloon surface of the sealing balloon ring 12 is in full contact with the soft tissue surrounding the glottis, isolated from the cavity surrounding the oral tongue. The only cavities present in the mouth are: the upper part of the laryngeal mask ventilation handle 2 and the palate of the oral cavity as well as the lacuna between the two sides of the laryngeal mask ventilation handle 2 and the mucous membranes of the oral cavity cheeks. Because the oral secretion glands of the patient mainly comprise parotid gland, sublingual gland and submandibular gland and correspond to the two sides of the base part 10, the secretion can smoothly pass through the drainage grooves 101 at the corresponding positions and is converged at the lowest part of the oral cavity, namely the head part of the laryngeal mask; and the secretion of sublingual gland and submaxillary gland flows to ventilating 2 both sides of handle through ventilating 2 tops of handle and oral cavity palate, assembles the drainage groove 101 of the position of basilar part 10 both sides respectively again, also assembles at the oral cavity minimum through the drainage groove 101 of corresponding position at last, drainage groove 101 head end position promptly.

In this scheme, sputum drainage route specifically does: drainage grooves 101, drainage connecting pipes 5 and the middle-rear part of the stomach decompression pipeline 6 are arranged on two sides of the base part 10. The opening at the tail part of the gastric decompression pipeline 6 is connected with a drainage tube and a negative pressure system, and the secretion gathered at the head ends of the drainage grooves 101 at the two sides enters the gastric decompression pipeline 6 through the drainage connecting tube 5 under the action of negative pressure, and finally enters the negative pressure system through the drainage tube to be drained out of the oral cavity. Can safely and reliably clean secretion of oral cavities and throats on both sides.

What needs to be pointed out is that, when there is not sputum in the oral cavity, two side drainage grooves 101 are directly communicated with the uppermost space of oral cavity, can provide smooth route for the gas flow, avoid the mucosa of oropharynx and laryngopharynx to be attracted at two side drainage grooves 101, avoid the mucosa injury that leads to from this. Finally, the secretion is cleaned when the secretion exists, and the air smoothly circulates and is decompressed when the secretion does not exist, so that the mucosa is not damaged. In the operation, the opening at the tail part of the stomach decompression pipeline 6 can be continuously connected with a negative pressure system, and the secretion of the oral cavity and the throat part is continuously sucked throughout the beginning and the end of the operation, so that the occurrence of aspiration is avoided to the maximum extent.

It should be noted that the drainage grooves 101 disposed on both sides of the base portion 10 are communicated with the gastric pressure reduction pipeline 6 via the drainage connecting pipe 5 at a position short from the head end of the base portion 10, and the cross communication port is beneficial for the patient, so that the gastric juice flowing back from the gastric cavity in anesthesia can be cleaned.

Furthermore, it sets up air flue operation pipeline 7 to run through ventilation handle 2 and basilar part 10 afterbody in proper order, air flue operation pipeline 7 and cover chamber 11 intercommunication, 7 head end openings of air flue operation pipeline set up in the cover chamber 11 of basilar part 10 afterbody. The air flue operation pipeline 7 is provided with a first cover plug 71 at the tail opening, and a first conical sealing valve 72 is arranged on the air flue operation pipeline 7.

The airway operation circuit 7 is provided to safely and reliably perform the operation in the airway while maintaining the mechanical ventilation of the laryngeal mask. The airway manipulations performed include respiratory examinations, respiratory interventions, and the like. When the operation in the airway is implemented, the mask body 1 of the laryngeal mask is placed at a proper position at the bottom of the mouth and the throat of a patient, and the breathing interface 3 of the laryngeal mask is connected with a breathing machine, so that the mechanical ventilation can be implemented for the patient. Meanwhile, the opening at the head end of the airway operation pipeline 7 is arranged in the mask cavity 11 at the tail part of the base part 10, and the bronchofiberscope can enter the mask cavity 11 through the airway operation pipeline 7 and enter the airway of a patient through the glottis. At this time, the first conical seal valve 72 provided in the airway manipulation tube 7 can seal the gap between the bronchofiberscope and the inner wall of the airway manipulation tube 7, maintaining airtightness at the time of mechanical ventilation. The opening of the operation hole of the first conical sealing valve 72 should be adapted to the outer diameter of the bronchofiberscope, specifically, the opening of the operation hole of the first conical sealing valve 72 should be smaller than the outer diameter of the bronchofiberscope, and is preferably set to have a diameter of 2-3mm, the conical opening of the first conical sealing valve 72 is directed toward the head end of the airway operation pipeline 7, and the bell mouth of the first conical sealing valve 72 is directed toward the tail end of the airway operation pipeline 7. When the air passage operation is finished and the bronchofiberscope exits the air passage operation pipeline 7, the first cover plug 71 arranged at the opening at the tail part of the air passage operation pipeline 7 can be used for blocking the opening at the tail part of the air passage operation pipeline 7 and blocking the opening at the tail part of the air passage operation pipeline 7, so that corresponding air passage sealing performance can be provided for mechanical ventilation.

In specific implementation, the first conical sealing valve 72 is preferably integrally formed with a part of the laryngeal mask by extrusion molding, and if the ventilation handle 2 of the laryngeal mask is a single part, the first conical sealing valve 72 is preferably disposed at the opening at the head end of the airway operation pipeline 7, so that the flash of the first conical sealing valve 72 can be conveniently treated. Of course, the tail end opening of the airway operation pipeline 7 can be arranged, but the tail end opening of the airway operation pipeline 7 is arranged at the bottom of the oral cavity 21 at the tail part of the laryngeal mask airway handle 2, so that the flash treatment is very inconvenient. If the mask stem 2 is a two-piece part, the first conical sealing valve 72 can be located at the junction of the two pieces of the airway manipulation tube 7 stem 2, preferably at the location of the protruding interface of the airway manipulation tube 7 in the piece of the airway stem 2, also for the convenience of flash processing.

As shown in fig. 5, the breathing interface 3 is provided with a ventilation socket 31, a gastric decompression socket 32 or/and an airway operation socket 33 at the head end for inserting into the inner cavity of the tail end of the ventilation handle 2. And the tail part of the ventilation handle 2 can be respectively communicated with the ventilation pipeline 4, the stomach decompression pipeline 6 or/and the air duct operation pipeline 7 in a sealing way. The tail end of the breathing interface 3 is provided with a first breathing machine interface 34.

The mask body 1 and the ventilation handle 2 of the laryngeal mask are both made of flexible materials, including silica gel, liquid silica gel and the like. However, the respiratory interface 3 at the tail of the laryngeal mask must be made of hard materials and used for temporary connection with a threaded pipe of a breathing machine, and the tightness and the reliability are inevitably reduced when the soft materials are temporarily connected. In order to realize reliable connection of the ventilation handle 2, the head end of the breathing interface 3 is provided with a ventilation socket 31, a gastric decompression socket 32 or/and an airway operation socket 33 which are used for inserting into the inner cavity of the tail end of the ventilation handle 2. The ventilation port 31, the gastric decompression port 32 are necessarily provided ports, and the airway manipulation port 33 is an alternatively provided port. The structure diagrams of the embodiments of the document are all selected and arranged. In specific implementation, when the head end of the breathing interface 3 is inserted into the inner cavity at the tail end of the ventilation handle 2, the ventilation socket 31, the gastric decompression socket 32 and/or the air duct operation socket 33 can be respectively in one-to-one correspondence with each passage arranged in the ventilation handle 2 at the bottom outlet of the socket cavity 21 and are in sealed communication. The laryngeal mask is enabled to be connected to the threaded tube via the first ventilator interface 34 to perform respiratory support using the breathing apparatus.

In order to enable the connection between the ventilation handle 2 and the breathing interface 3 to achieve a good sealing effect and avoid the application of glue, the connection inner cavity channel at the rear end of the ventilation handle 2 is matched with the shape of the head end of the breathing interface 3 in a consistent manner, the size of the connection inner cavity at the rear end of the ventilation handle 2 is slightly smaller than the shape of the head end of the breathing interface 3, the specific size difference is 3-5cm, the head end of the hard breathing interface 3 can be easily inserted into the connection inner cavity at the rear end of the ventilation handle 2 made of elastic flexible materials, and after the head end of the breathing interface 3 is inserted into the connection inner cavity at the rear end of the ventilation handle 2, the connection inner cavity at the rear end of the ventilation handle 2 can form a tight package on the head end of the breathing interface 3, so that a strong sealing effect is formed.

In order to ensure the sealing connection of each cavity arranged in the ventilation handle 2 and the breathing interface 3 and avoid the accidental communication leakage caused by insufficient sealing property among the cavities, in particular the accidental communication leakage between the ventilation pipeline 4 and the gastric decompression pipeline 6 or between the airway operation pipeline 7 and the gastric decompression pipeline 6 on the bottom plane of the socket cavity 21, the length of the interface between the gastric decompression pipeline 6 and the ventilation pipeline 4 or between the airway operation pipeline 7 is different, so that enough strokes are provided between the gastric decompression pipeline 6 and the ventilation pipeline 4 as well as between the gastric decompression pipeline 6 and the airway operation pipeline 7, and enough sealing contact areas are provided between the inner wall of the mouth cavity 21 and the outer wall of the ventilation pipeline 4 and the gastric decompression pipeline 6 as well as between the airway operation pipeline 7 and the gastric decompression pipeline 6 at the tail part of the flexible ventilation handle 2, so as to ensure the sealing effect between the ventilation pipeline 4 and the drainage pipeline 5 as well as the ventilation pipeline 4 and between the gastric decompression pipeline 6, and ensure the ventilation pipeline 4 and ensure the ventilation tightness of the ventilation pipeline 4.

Further, as shown in fig. 2 and fig. 3, a second ventilator interface 35 is disposed on a side of the breathing interface 3, and a second matching conical sealing valve 36 and a second cover plug 37 are disposed at an opening of the first ventilator interface 34 at the rear of the breathing interface 3, and the second cover plug 37 can be matched and sealed to connect to the tail end of the second conical sealing valve 36.

The second breathing machine interface 35 is arranged on the side, and the ventilation pipeline 4 of the laryngeal mask can be communicated with the breathing support equipment through the second breathing machine interface 35 to support breathing. At this time, the original breathing interface 3 is not ventilated, and the first ventilator interface 34 is vacant. A second conical sealing valve 36 is disposed in a side cavity at the rear of the first ventilator port 34. The second conical sealing valve 36 is arranged to enable an endoscope or a surgical instrument to be placed into the airway through the opening of the second conical sealing valve 36 at the rear of the first ventilator interface 34 to operate the airway in the ventilation pipeline 4 of the laryngeal mask, so that interventional operation can be performed in the airway. At this time, the second conical sealing valve 36 disposed in the first ventilator port 34 can seal the gap between the airway manipulation tool and the inner wall of the first ventilator port 34, and maintain the air tightness during the mechanical ventilation of the second ventilator port 35. The operation hole of the second conical sealing valve 36 should be adapted to the outer diameter of the bronchofiberscope, and specifically, the operation hole of the second conical sealing valve 36 should be smaller than the outer diameter of the bronchofiberscope, and is generally set to be 2-3mm in diameter. The tapered opening of the second conical sealing valve 36 points in the direction of the head end of the laryngeal mask, and the flared opening of the second conical sealing valve 36 points in the direction of the tail end of the laryngeal mask. When the airway operation is finished and the bronchofiberscope exits the first respirator 34, the second cover plug 37 arranged at the rear opening of the first respirator 34 can be connected to the rear part of the second conical sealing valve 36 to seal off the rear opening of the first respirator 34, so that corresponding airway tightness can be provided for mechanical ventilation of the second respirator 35.

If an airway manipulation tube 7 and a matching first conical sealing valve 72 are provided in the laryngeal mask, as shown in figures 2 and 3; meanwhile, the breathing interface 3 is set to be T-shaped, and a second conical sealing valve 36 is arranged at the tail part of the first breathing machine interface 34; the laryngeal mask is provided with two airway operation passages, and two airway operation tools can be placed through the two airway operation passages, such as: an air flue endoscope and a rope-shaped surgical instrument, wherein an operation channel is generally arranged in the air flue endoscope. Thus, when respiratory support is implemented through the second ventilator interface 35, besides being placed into the airway endoscope through the second conical sealing valve 36, two cable-shaped surgical instruments can be used through the airway operation pipeline 7 and the operation passage in the airway endoscope, respectively, so that some complex interventional operations can be implemented. If only the airway operation pipeline 7 or the T-shaped breathing interface 3 is arranged, only one airway endoscope can be arranged to carry out airway examination while respiratory support is carried out; if the airway endoscope is provided with an airway operation passage, a rope-shaped surgical instrument can be placed in the airway endoscope, and only some simple airway operations can be implemented, such as: biopsy sampling, electrocoagulation hemostasis, and the like.

As shown in fig. 3, a second breathing machine interface 35 is arranged on the side of the breathing interface 3, and a second conical sealing valve 36, a third conical sealing valve 38 and a second cover plug 37 which are matched with each other are arranged at an opening of a first breathing machine interface 34 at the rear of the breathing interface 3, and both the third conical sealing valve 38 and the second cover plug 37 can be matched and sealed with each other at the tail end of the second conical sealing valve 36; the diameter of the tapered opening of the second tapered sealing valve 36 is 4-6mm, and the diameter of the tapered opening of the third tapered sealing valve 38 is 2-5mm.

The diameter of the conical opening of the second conical sealing valve 36 is 4-6mm, the second conical sealing valve 36 is directly connected and arranged at the tail part of the first respirator 34, the larger conical opening of the second conical sealing valve 36 can allow the tracheal catheter to be placed into the first respirator 34 through the conical opening of the second conical sealing valve 36, and can seal the gap between the outer wall of the tracheal catheter and the first respirator 34, so that the laryngeal mask can keep air tightness when the laryngeal mask is connected with the respiratory support equipment through the second respirator 35 to carry out mechanical ventilation.

Thus, when difficult airways are required to be intubated (such as a patient who needs ICU breathing support after operation, or a prone position patient), the laryngeal mask is used for breathing support. When the laryngeal mask is connected with the respiratory support equipment through the second respirator interface 35 to implement mechanical ventilation, under the assistance of a video endoscope, the tracheal tube is placed into the ventilation pipeline 4 of the laryngeal mask through the second conical sealing valve 36 arranged in the first respirator interface 34 and is placed into the glottis through the laryngeal mask cavity 11 to enter the airway of a patient, so that the tracheal intubation is safely completed while the mechanical ventilation is implemented. The trachea cannula is reserved and the laryngeal mask is pulled out, and then the prone position can be placed for starting the operation; or after the operation is finished, the trachea cannula is kept and the laryngeal mask is pulled out, and then the patient can be sent into the ICU.

As shown in fig. 3 or fig. 6, the connection between the breathing interface 3 and the second breathing machine interface 35 on the side includes an annular sealing clamp, and the annular sealing clamp enables the second breathing machine interface 35 to rotate 360 ° on the side of the breathing interface 3. During mechanical ventilation, when the breathing threaded pipe of the breathing apparatus is connected to the second breathing machine interface 35 on the side, if the connection is not smooth, torsion can be generated, the breathing threaded pipe can be separated under certain conditions, and even the laryngeal mask can be pulled out from the oral cavity. Through the connected mode that breathing interface 3 and the second breathing machine interface 35 annular of side can 360 rotatory sealed joints, can pass through autonomous rotation when screwed pipe connection position atress, release the torsion that is not smooth and easy to breathe screwed pipe connection to avoid breathing the screwed pipe to deviate from and the laryngeal mask extracts from the oral cavity, improve laryngeal mask safety in utilization.

Furthermore, a compressible and foldable corrugated pipe or filter is hermetically arranged between the breathing interface 3 and the second breathing machine interface 35 on the side. The second breathing machine interface 35 at the side of the laryngeal mask is kept away from the threaded pipe through the compressible and foldable corrugated pipe, so that the threaded pipe is prevented from occupying the space outside the oral cavity of a patient, and a relatively abundant operation space is provided for an operator during head or ear-nose surgical operations.

Further, as shown in fig. 6, the carbon dioxide monitoring interface 30 and a matched sealing cover 39 are communicated with the side of the breathing interface 3, and the sealing cover 39 can seal the carbon dioxide monitoring interface 30. The spontaneous respiration of the patient disappears in general anesthesia, the anesthesia machine is used for carrying out respiratory support on the patient in the whole operation process, and an anesthesiologist is very important for respiratory management. Respiratory management is mainly respiratory rate and tidal volume, and adjustment of parameters is mainly based on partial pressure of carbon dioxide exhaled by a patient. Respiratory interface 3 side intercommunication sets up carbon dioxide monitoring interface 30, can communicate carbon dioxide monitoring pipe at carbon dioxide monitoring interface 30, patient's expired gas can pass to carbon dioxide analysis appearance through carbon dioxide monitoring pipe to dynamic carbon dioxide partial pressure parameter when acquireing patient's mechanical ventilation is made the adjustment to patient's breathing parameter, and avoid carbon dioxide to accumulate, in order to avoid the hypocapnography that the excessive exhalation of carbon dioxide leads to, avoid the respiratory alkalosis that leads to from this and the dangerous situation of the myocardial ischemia that the excessive contraction of coronary artery leads to of coronary heart disease patient. When the patient is transported after the operation is finished, the carbon dioxide monitoring interface 30 can be blocked by the sealing cover 39 matched with the carbon dioxide monitoring interface 30, and the ventilation airtightness of the laryngeal mask is kept.

Furthermore, a cover post 39 'isolated from the respiratory interface 3 is provided adjacent to the capnometry interface 30, and the cover 39 can be temporarily fixed to the cover post 39'. During anesthesia, the carbon dioxide monitoring catheter is communicated with the carbon dioxide monitoring interface 30 to monitor the partial pressure of carbon dioxide in the expired gas of the patient, at the moment, the sealing cover 39 is not used and is easy to pollute or lose, and the sealing cover 39 can be temporarily fixed on the sealing cover pile 39' to avoid polluting or losing the sealing cover 39. When a patient is transported, the carbon dioxide monitoring catheter is separated from the carbon dioxide monitoring interface 30, and at the moment, the sealing cover 39 temporarily stored on the sealing cover pile 39' is taken down and plugged on the carbon dioxide monitoring interface 30.

Further, as shown in fig. 4 and 7, a hollow-out area 103 is arranged at the end part of one side of the drainage connecting tube 5 close to the gastric decompression pipeline 6, and the hollow-out area 103 of the drainage connecting tube 5 on the two sides is wrapped to form a gastric decompression hollow-out section 61 similar to the inner cavity of the gastric decompression pipeline 6. This scheme phlegm laryngeal mask is inhaled to multi-functional gasbag, laryngeal mask basilar part 10 both sides are kept apart with 1 cover chamber 11 of the cover body respectively and are set up drainage recess 101. The head end of the base part 10 is respectively provided with a drainage connecting pipe 5 to communicate the drainage groove 101 with the stomach decompression pipeline 6. Like this, when stomach tube decompression is put into through stomach decompression pipeline 6 to needs, the stomach tube head end is put into from 6 tail end openings of stomach decompression pipeline, and when the stomach tube head end reached stomach decompression pipeline 6 and 5 junctions of drainage connecting tube, the stomach tube head end was crooked slightly, just probably got into drainage connecting tube 5 and the top is held on drainage connecting tube 5 lateral walls, leads to the stomach tube to be difficult to get into in front end stomach decompression pipeline 6 through stomach decompression pipeline 6 and drainage connecting tube 5 junction.

A hollow-out area 103 is arranged at the end part of one side of the drainage connecting pipe 5 close to the gastric decompression pipeline 6, and the hollow-out area 103 of the drainage connecting pipe 5 at the two sides is wrapped to form a gastric decompression hollow-out section 61 similar to the inner cavity of the gastric decompression pipeline 6. Set up the fretwork district to stomach decompression pipeline 6 and 5 positions of being connected of drainage connecting tube and wrap up the restriction to stomach decompression pipeline 6 with 5 alternately intercommunication positions of drainage connecting tube, form the stomach decompression fretwork section 61 similar with 6 inner chambers of stomach decompression pipeline, when putting into the stomach tube through stomach decompression pipeline 6, when the stomach tube reachs with 5 alternately intercommunication positions of drainage connecting tube, the fretwork district 103 that sets up 5 near 6 side end portions of stomach decompression pipeline in drainage connecting tube can restrict the stomach tube and squint to both sides, thereby avoid when putting into the stomach tube head end gets into 5 tube cavities of side drainage connecting tube, make the stomach tube can be smooth and easy get into patient's esophagus through 6 of stomach decompression pipeline, finally get into the stomach cavity and attract the decompression.

In order to avoid the obstruction of the hollow-out area 103 to the drainage, the hollow-out area 103 is set as a cavity area on the side of the drainage connecting pipe 5 away from the sealing air bag ring 12, that is, the cavity area is kept on the lower side of the tube cavity of the drainage connecting pipe 5, so that the secretion in the oral cavity can smoothly enter the stomach decompression pipeline 6 through the cavity area on the lower side of the tube cavity of the drainage connecting pipe 5, and then is sucked out of the oral cavity of the patient. The hollowed-out area 103 is preferably arranged as a horizontal slit area. If the drainage connecting pipe 5 is arranged to be a horizontal fracture area, a plurality of transverse bars 107 are arranged at the end part of the tube cavity of the drainage connecting pipe 5 close to one side of the stomach decompression pipeline 6 along the shape of the stomach decompression pipeline 6. The diameter of the inner cavity of the stomach pressure reducing pipeline 6 is only 1-2mm larger than the diameter of the outer diameter of the stomach tube, a transverse fence 107 is arranged at the center of the end part of the stomach pressure reducing pipeline 6 close to the cavity of the drainage connecting pipe 5, so that the opening of the end part of the stomach pressure reducing pipeline 6 close to the cavity of the drainage connecting pipe 5 can be separated finely, and the head end of the stomach tube can be prevented from entering the cavity of the drainage connecting pipe 5.

As shown in fig. 8 and the enlarged partial view of section I of fig. 8, the first protrusion 104 is disposed on the base portion 10 at the opening of the airway operation tube 7, so that the airway operation tube 7 is tilted at an angle a at a first third bisector 13 of the central axis of the opening toward the long axis of the opening plane of the sealing balloon ring 12, and the angle a is 35 ° to 45 °. Through the arrangement of the first bump 104, the head end of the airway operation pipeline 7 is formed to be turned up from the bottom plane of the laryngeal mask of the base part 10 to the direction of the laryngeal mask sealed air sac ring 12, the turning-up angle is a, the angle a is 35-45 degrees, namely: the head end of the air passage operation pipeline 7 points to the glottis-trachea opening direction. When the air passage operating tool extends out from the opening of the air passage operating pipeline 7, the first bump 104 and the angle a are set to be 35-45 degrees, so that the head end of the air passage operating pipeline 7 points to the glottis, the air passage operating tool is pushed forwards under the restriction of the pipe cavity of the air passage operating pipeline 7, the air passage operating tool can easily enter the glottis, the direction of the head end of the air passage operating tool does not need to be adjusted to a large extent, the air passage operating tool can enter the glottis-trachea more easily, the operation difficulty of placing the air passage operating tool into the air passage by an operator is reduced, and even young doctors can smoothly complete the operation. If the operation is to use the bronchofiberscope to position the laryngeal mask, when the bronchofiberscope reaches the position above the first bump 104, the opening of the airway operation pipeline 7 is tilted inwards and upwards at an angle a of 35-45 degrees, so that the bronchofiberscope can clearly see the glottis, and the end direction of the bronchofiberscope just points to the glottis. The bronchofiberscope is pushed forward, the advancing direction of the bronchofiberscope is very attached to or close to the glottis direction, and the head end of the bronchofiberscope can be very conveniently placed into the trachea through the glottis without excessively adjusting the bronchofiberscope.

Further, as shown in the enlarged partial view of the section K in fig. 8, a second protrusion 105 is disposed at the opening of the ventilation pipeline 4 on the base portion 10, and anti-blocking grooves 106 are disposed on both sides of the second protrusion 105 along the long axis direction of the cover 1. In some patients, the epiglottis is narrowed and the epiglottis falls into the laryngeal mask cavity 11 when the laryngeal mask is in use. When the epiglottis of some patients is relatively long, the epiglottis falling into the laryngeal mask cavity 11 may block the opening of the airway 4 in the laryngeal mask cavity 11, so that the airway 4 is blocked, the mechanical respiratory support cannot be normally carried out, and the dangerous situation is brought. In order to avoid this, as shown in fig. 8, the base portion 10 is provided with two projections 105 at the opening of the ventilation pipeline 4, and two sides of the two projections 105 are provided with anti-blocking grooves 106 along the long axis of the cover 1, and the anti-blocking grooves 106 may be provided in plural, in this embodiment, one anti-blocking groove 106 is provided at each of two sides of the two projections 105. By the arrangement of the anti-blocking groove 106, even if the elongated epiglottis of some patients falls on the opening of the ventilation pipeline 4 in the laryngeal mask cavity 11, the anti-blocking grooves 106 arranged on the two sides of the second bump 105 form a safe gas circulation passage communicated with the ventilation pipeline 4, so that the safety of the mechanical ventilation of the patients can be maintained under the special condition.

Meanwhile, as shown in a partial enlarged view of a J section of fig. 8, the central axis of the opening part of the vent pipeline 4 is tilted to form an angle b towards the front third bisector 13 of the long axis of the opening plane of the sealed air sac ring 12 by the second bump 105, and the angle b is 35-45 degrees, so that when the difficult airway needs to pass through the tracheal cannula under the respiratory support of the laryngeal mask, the central axis glottis of the opening part of the vent pipeline 4 and the opening position of the trachea are arranged by the second bump 105 and the angle b of 35-45 degrees. When the trachea is difficult to intubate, the laryngeal mask is placed in the inlet cavity for mechanical ventilation to ensure oxygen supply of a patient, the first breathing machine interface 34 is arranged at the tail end of the breathing interface 3 to place the trachea cannula in the ventilation pipeline 4, and the air tightness of the mechanical ventilation can be ensured under the sealing action of the second conical sealing valve 36. Simultaneously, when trachea cannula head end reached 4 openings of ventilation pipe through ventilation pipe 4, trachea cannula was under 4 openings of ventilation pipe's restraint, and trachea cannula head end can laminate or be close to the glottic direction when going out 4 openings of ventilation pipe, need not too much adjustment trachea cannula head end direction, just can put into the trachea cannula very convenient through the glottic. Of course, if the tracheal cannula is not made, but a bronchoscope or other airway operation tools are placed through the access, the operation difficulty is reduced, the principle is the same, and the patient does not need to be complained here.

As shown in the structural schematic diagram of the section B of fig. 1, the height of the lower edge of the stomach decompression pipeline 6 at the cross-connection part with the drainage connecting pipe 5 is the same, or the lower edge of the stomach decompression pipeline 6 is lower than the lower edge of the drainage connecting pipe 5. When guaranteeing negative pressure drainage clearance oral secretion during the purpose that sets up like this, the stomach decompression pipeline 6 lower edge is not higher than junction drainage connecting tube 5 lower edge, can guarantee that oral secretion can be smooth and easy get into stomach decompression pipeline 6 through drainage connecting tube 5, gets into through the negative pressure system of being connected with stomach decompression pipeline 6 and is attracted the clearance.

As shown in fig. 9, the multifunctional air bag sputum suction laryngeal mask further comprises a drainage pipeline 8, wherein the drainage pipeline 8 comprises a drainage hose 81, a drainage clamping connection pipe 82, a drainage extension pipe 83 and a negative pressure connector 84 which are sequentially and hermetically communicated. In the operation anesthesia, need continuously clear up the oral secretion and avoid the secretion to gather too much and arouse the mistake and inhale, for the convenience of operation, can put into the 6 lumens of stomach decompression pipeline through 6 rear opening of stomach decompression pipeline of drainage hose 81. The outer diameter of the drainage clamping pipe 82 is matched with the tail opening of the stomach decompression pipeline 6, the drainage clamping pipe 82 is clamped at the tail opening of the stomach decompression pipeline 6, the drainage hose 81 is fixedly kept in the stomach decompression pipeline 6, the drainage extension pipe 83 and the negative pressure interface 84 are connected to a negative pressure system, and continuous suction and cleaning can be carried out on secretions at the head of the stomach decompression pipeline 6 through the drainage pipeline 8. If the secretion clearance is clean, gaseous 2 both sides gaps of handle that ventilate through the laryngeal mask, the drainage recess 101 that sets up through basilar part 10 both sides get into drainage connecting tube 5, get into stomach decompression pipeline 6 at last, can smoothly reduce the pressure to the negative pressure pipeline, avoid because of the mucous membrane damage that the negative pressure is too big causes.

Further, the outer diameter of the drainage hose 81 is smaller than the inner diameter of the gastric decompression pipeline 6, and the length of the drainage hose is matched with that of the gastric decompression pipeline 6. The outer diameter of the drainage hose 81 is smaller than the inner diameter of the gastric decompression pipeline 6, so that the drainage hose 81 can be smoothly placed in the gastric decompression pipeline 6; drainage hose 81 length and the adaptation of stomach decompression pipeline 6 enable drainage hose 81 head end to be located near stomach decompression pipeline 6 and 5 intersection site of drainage connecting tube, the negative pressure drainage efficiency of improvement sputum that can furthest, simultaneously, the gastric juice of stomach intracavity refluence also can be in time cleared up through drainage hose 81 head end suction opening very first time.

Further, as shown in the structural schematic diagram of the L section of fig. 9, the drainage bayonet tube 82 includes a decompression connecting tube 85, and a plurality of decompression grooves 86 are arranged on the periphery of the decompression connecting tube 85 and can be adapted to be clipped into the tail end opening of the gastric decompression pipeline 6. Decompression connecting pipe 85 also enables drainage hose 81 to enter stomach decompression pipeline 6 and then temporarily fix, at this moment, under the effect that decompression connecting pipe 85 periphery was equipped with a plurality of decompression grooves 86, gaseous can get into the clearance of drainage hose 81 and stomach decompression pipeline 6 through decompression grooves 86, reaches drainage hose 81 head end at last, in drainage hose 81 head end opening gets into drainage hose 81, finally through drainage extension pipe 83 by the negative pressure system suction clearance of being connected with negative pressure interface 84. When no secretion exists, the gas decompression passage is further increased, the possibility of damage of the negative pressure at the head end of the drainage hose 81 to the mucosa is further reduced, and the safety of continuously sucking and cleaning the secretion in the oral cavity through the gastric decompression pipeline 6 is further improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a phlegm laryngeal mask is inhaled to multi-functional gasbag, includes the cover body (1), ventilate handle (2) and breathing interface (3) by the head end to the tail end in proper order, link up breathing interface (3) in proper order and ventilate handle (2) and be equipped with the airtight air pipe way (4) that communicate in cover body (1) cover chamber (11), characterized in that: the upper half part of the mask body (1) is annularly provided with a sealed air bag ring (12), the lower half part of the mask body (1) is a base part (10), the height of the sealed air bag ring (12) only occupies the upper half part of the mask body (1) and is 1/3-1/2 of the height of the mask body, and the sealed air bag ring (12) is provided with an inflation tube (111) and an inflation valve (112); a stomach pressure reducing pipeline (6) sequentially penetrates through the ventilation handle (2) and the base part (10), an opening at the head end of the stomach pressure reducing pipeline (6) is arranged at the head end of the cover body (1), and the stomach pressure reducing pipeline (6) is isolated from the ventilation pipeline (4) and the cover cavity (11); two side edges of the base part (10) are respectively isolated from the cover cavity (11) of the cover body (1) and provided with drainage grooves (101); the head end of the base part (10) is respectively provided with a drainage connecting pipe (5) to communicate the drainage groove (101) with the stomach pressure reducing pipeline (6).

2. The multifunctional air bag sputum suction laryngeal mask of claim 1, wherein: an air passage operation pipeline (7) is arranged at the tail part of the base part (10) and sequentially penetrates through the ventilation handle (2), the air passage operation pipeline (7) is communicated with the cover cavity (11), and an opening at the head end of the air passage operation pipeline (7) is arranged in the cover cavity (11) at the tail part of the base part (10); the air passage operation pipeline (7) is provided with a first cover plug (71) at the opening of the tail part, and the air passage operation pipeline (7) is provided with a first conical sealing valve (72).

3. The multifunctional air bag sputum suction laryngeal mask of claim 1 or 2, wherein: the head end of the breathing interface (3) is provided with a ventilation socket (31) for inserting into the inner cavity of the tail end of the ventilation handle (2), a stomach decompression socket (32) or/and an airway operation socket (33); the tail part of the ventilation handle (2) can be hermetically communicated with a ventilation pipeline (4), a stomach decompression pipeline (6) or/and an air passage operation pipeline (7); the tail end of the breathing interface (3) is provided with a first breathing machine interface (34).

4. The multifunctional air bag sputum suction laryngeal mask of claim 3, wherein: the second respirator interface (35) is arranged on the side of the respiratory interface (3), the second conical sealing valve (36) and the second cover plug (37) which are matched with each other are arranged on the first respirator interface (34) at the tail of the respiratory interface (3), and the second cover plug (37) can be matched and hermetically connected to the tail end of the second conical sealing valve (36).

5. The multifunctional air bag sputum suction laryngeal mask of claim 3, wherein: a second breathing machine interface (35) is arranged on the side of the breathing interface (3), a second conical sealing valve (36), a third conical sealing valve (38) and a second cover plug (37) which are matched with each other are arranged at an opening of a first breathing machine interface (34) at the tail of the breathing interface (3), and the third conical sealing valve (38) and the second cover plug (37) can be matched and sealed with each other and are connected to the tail end of the second conical sealing valve (36); the diameter of the conical opening of the second conical sealing valve (36) is 4-6mm, and the diameter of the conical opening of the third conical sealing valve (38) is 2-5mm;

breathing interface (3) and the second breathing machine interface (35) of side are connected including the sealed joint of annular, the sealed joint of annular makes second breathing machine interface (35) can 360 rotations in breathing interface (3) side.

6. The multifunctional air bag sputum suction laryngeal mask of claim 1, wherein: a hollow-out area (103) is arranged at the end part of one side of the drainage connecting pipe (5) close to the gastric decompression pipeline (6); the hollow area (103) of the bilateral drainage connecting pipe (5) is wrapped to form a stomach decompression hollow section (61) similar to the inner cavity of the stomach decompression pipeline (6);

the hollow area (103) is arranged as a hollow area on one side of the drainage connecting pipe (5) far away from the sealed air bag ring (12); the hollowed-out area (103) comprises a horizontal fracture area.

7. The multifunctional air bag sputum suction laryngeal mask of claim 1 or 2, wherein: the base part (10) is provided with a first bump (104) at the opening of the air passage operating pipeline (7), so that the air passage operating pipeline (7) tilts towards a front one-third equant point (13) of a long shaft of an opening plane of the sealing air bag ring (12) at the central axis of the opening part to form an angle a, and the angle a is 35-45 degrees; the base part (10) is provided with a second bump (105) at the opening of the vent pipe (4), so that the central axis of the opening of the vent pipe (4) points to the front one-third equal division point (13) of the long axis of the opening plane of the sealing air bag ring (12) and tilts to form an angle b, the angle b ranges from 35 degrees to 45 degrees, and anti-blocking grooves (106) are arranged on two sides of the second bump (105) along the long axis direction of the cover body (1).

8. The multifunctional air bag sputum suction laryngeal mask of claim 1, wherein: the height of the lower edge of the stomach decompression pipeline (6) at the cross communication position with the drainage connecting pipe (5) is the same, or the lower edge of the stomach decompression pipeline (6) is lower than the lower edge of the drainage connecting pipe (5).

9. The multifunctional air bag sputum suction laryngeal mask of claim 4 or 5, wherein: a carbon dioxide monitoring interface (30) and a matched sealing cover (39) are communicated with the side of the breathing interface (3), and the sealing cover (39) can seal the carbon dioxide monitoring interface (30); a sealing cover pile (39 ') isolated from the breathing interface (3) is arranged beside the carbon dioxide monitoring interface (30), and the sealing cover (39) can be temporarily fixed on the sealing cover pile (39').

10. The multifunctional air bag sputum suction laryngeal mask of claim 1, wherein: the drainage device is characterized by further comprising a drainage pipeline (8), wherein the drainage pipeline (8) comprises a drainage hose (81), a drainage clamping pipe (82), a drainage extension pipe (83) and a negative pressure connector (84) which are sequentially communicated in a sealing manner; the outer diameter of the drainage hose (81) is smaller than the inner diameter of the gastric decompression pipeline (6), and the length of the drainage hose is matched with that of the gastric decompression pipeline (6);

the drainage bayonet tube (82) comprises a decompression connecting tube (85), a plurality of decompression grooves (86) are arranged on the periphery of the decompression connecting tube (85) and can be clamped into the tail end opening of the gastric decompression pipeline (6) in a matching manner.

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