CN207520428U - Laryngeal mask and assisted respirator - Google Patents

Abstract

The utility model provides a laryngeal mask and an auxiliary breathing device, which relate to the technical field of medical instruments. The laryngeal mask includes a ventilating main pipe and a bag body. The bag body includes a connecting portion, an opening and a tip in sequence. One end of the ventilating main pipe is fixed on the connecting portion and communicates with the opening; The sleeve is provided with an inflatable tube, and the inflatable tube communicates with the air bag; the auxiliary breathing device includes a ventilator and the above-mentioned laryngeal mask, and the ventilating tube of the ventilator communicates with the ventilating main pipe of the laryngeal mask. The inflatable tube is sleeved in the main ventilator. When the capsule of the laryngeal mask is inserted into the patient's epiglottis, the patient's teeth can only cling to the main ventilator without affecting the inflatable tube. The main ventilator protects the inflatable tube. Reduce the use of the laryngeal mask due to unconscious biting of the inflatable tube by the patient during the treatment.

Description

Laryngeal mask and assisted breathing device

technical field

The utility model relates to the technical field of medical equipment, in particular to a laryngeal mask and an auxiliary breathing device.

Background technique

Patients cannot breathe spontaneously when they are under general anesthesia or are severely injured. Laryngeal masks are widely used in medicine as a medical device for maintaining breathing and ventilation of patients during surgical anesthesia or rescue of critically ill patients.

Existing laryngeal masks mainly include single-chamber laryngeal masks and double-chamber laryngeal masks. Both single-chamber laryngeal masks and double-chamber laryngeal masks include ventilation main pipes for ventilation and air bags for sealing the respiratory tract, and also include air bags for inflating the air bags. The deflated inflatable tube, among them, the single-lumen laryngeal mask can help patients establish an artificial airway, but when the patient's oral secretions increase, the air bag of the single-lumen laryngeal mask can be displaced, so the respiratory tract and digestive tract cannot be effectively isolated, which can cause gastric Flatulence, and even concurrent reflux and aspiration in severe cases; the double-chamber laryngeal mask is equipped with one more drainage tube than the single-chamber laryngeal mask, and the drainage tube can be inserted into the gastric tube to drain gastric juice to prevent gastric flatulence and gastric reflux and aspiration.

The inflatable tube and main ventilator of the existing laryngeal mask are set as two relatively independent pipelines. Since the inflatable tube and the main ventilator need to pass through the patient's oral cavity, the patient may bite the inflatable tube unconsciously during use and affect the use of the laryngeal mask.

Utility model content

The purpose of this utility model is to provide a laryngeal mask and an auxiliary breathing device to solve the problem that when the inflatable tube and the main ventilation tube are two relatively independent pipelines in the prior art, the patient may unconsciously bite the inflatable tube and affect the use of the laryngeal mask technical problems.

The laryngeal mask provided by the utility model comprises a ventilating main pipe and a capsule, and the capsule sequentially includes a connecting portion, an opening and a tip along its length direction, one end of the venting main pipe is fixed on the connecting portion, and It communicates with the opening; the bladder is provided with an air bag, and the ventilation main pipe is provided with an inflatable tube, and the inflatable tube communicates with the air bag.

Further, the balloon body is provided with a fixing hole, the airbag is provided with a fixing tube, the fixing tube matches the fixing hole, and the inflation tube communicates with the fixing tube.

Further, one end of the ventilation main pipe is connected to the connecting portion of the capsule, and a joint is fixed at the opening of the other end, and the joint is provided with an interface communicating with the ventilation main pipe, and is also provided for the The inflation positioning hole that the inflation tube seals through.

Further, the inner wall of the joint is provided with a fixing protrusion, and a fixing channel communicating with the inflation positioning hole is formed in the fixing protrusion.

Further, a drainage tube is sleeved inside the ventilation main pipe, and one end of the drainage tube passes through the connecting part and the opening part in turn, and is fixed at the end of the tip part; There is a drainage positioning hole for the sealing passage of the drainage tube.

Further, the capsule body is provided with a locking groove, and the locking groove is matched with the drainage tube.

Further, the connecting part is provided with vent holes, the vent holes are used to communicate with the vent main pipe and the opening part, and there are two vent holes located on both sides of the drainage tube respectively.

Further, the outer casing of the ventilation main pipe is provided with soft tooth pads, and the soft tooth pads correspond to the positions of the teeth in the patient's oral cavity.

Further, the ventilation main pipe includes a straight line part and a bent part, the bent part is connected to the connecting part of the capsule, and the bending angle of the bent part is in the range of 90°-110°.

The beneficial effects of the utility model laryngeal mask are:

The laryngeal mask provided by the utility model includes a main ventilation pipe and a capsule body, the main ventilation pipe communicates with the opening of the capsule body, and an airbag for sealing the patient's epiglottis and glottis is arranged outside the capsule body. When the laryngeal mask is not in use, the airbag is in a dry state. state. When the patient needs to insert a laryngeal mask for assisted breathing, the capsule body is inserted into the patient's epiglottis through the patient's mouth. After the position is fixed, the air bag is inflated through the inflation tube, and the air bag is inflated to seal the patient's epiglottis and glottis. , by inflating and pumping air into the ventilating main tube, the assisted breathing of the patient is realized. Among them, the inflatable tube is sleeved in the main ventilator. When the capsule of the laryngeal mask is inserted into the patient's epiglottis, the outer wall of the ventilator is in direct contact with the patient's mouth. It affects the inflatable tube, and the main ventilator protects the inflatable tube, reducing the patient's unconscious bite on the inflatable tube during treatment and affecting the use of the laryngeal mask.

In addition, the inflatable tube is located in the main ventilator. When the laryngeal mask is inserted and pulled out of the patient's epiglottis, only the outer wall of the main ventilator is in direct contact with the patient's mouth. The use of the inflatable tube has no effect on the comfort of the patient. During the withdrawal process, only the outer wall of the ventilation main pipe squeezes and stimulates the patient's mouth and throat, and the roundness of the outer wall of the single pipe of the ventilation main pipe is easy to ensure, thereby reducing the roundness of the outer walls of the two pipes when the ventilation main pipe and the inflatable tube are set separately. Poor, it squeezes the patient's mouth and throat strongly and stimulates the situation, thereby enhancing the comfort of the patient. In addition, the inflatable tube is placed in the ventilation main tube, and the position of the inflatable tube is fixed. The inflatable tube is not affected during the use of the laryngeal mask. Medical personnel do not need to organize the inflatable tube, thereby enhancing the practicability and operation of the laryngeal mask. Simplicity.

Another object of the present utility model is to provide a kind of assisted breathing apparatus, comprise ventilator and above-mentioned laryngeal mask, the ventilation tube of described ventilator is communicated with the ventilation main pipe of described laryngeal mask, and this breathing apparatus has all technologies of above-mentioned laryngeal mask Effect.

The beneficial effect of the auxiliary breathing device of the present utility model is:

The auxiliary breathing device provided by the utility model, when the patient is under anesthesia or is injured or critically ill and needs an auxiliary breathing device to assist breathing, the laryngeal mask is inserted into the epiglottis of the patient, and gas is filled into the inflatable tube. The bulge seals the patient's epiglottis and glottis. After the laryngeal mask is fixed, the ventilator is turned on. The ventilator inflates and pumps air into the patient's body through the ventilation tube and the ventilator of the laryngeal mask to assist the patient to breathe.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is a schematic structural diagram of a laryngeal mask provided by Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the exploded structure of the laryngeal mask provided by Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the connection structure between the capsule body and the drainage tube in Fig. 1;

Fig. 4 is a structural schematic diagram of another perspective view of the connection between the capsule and the drainage tube in Fig. 1;

Fig. 5 is the structural representation of joint among Fig. 1;

FIG. 6 is a schematic cross-sectional structure diagram of joint AA in FIG. 5 .

Icons: 1 - Ventilation supervisor; 2 - Capsule; 3 - Air bag; 4 - Inflatable tube; 5 - Connector; 6 - Drainage tube; 7 - Soft tooth pad; 11 - Straight line; 12 - Bending part; Connection part; 22-opening part; 23-tip; 24-fixing hole; 25-clamping slot; 211-ventilation hole; 31-fixing tube; 51-interface; 52-inflatable positioning hole; 53-fixing protrusion; 54—drainage positioning hole.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Embodiment one

This embodiment provides a laryngeal mask, as shown in Fig. 1-Fig. One end of 1 is fixed on the connection part 21 and communicates with the opening 22; the airbag 3 is provided on the capsule body 2, and the inflatable tube 4 is sleeved in the ventilation main pipe 1, and the inflatable tube 4 communicates with the airbag 3.

The laryngeal mask provided in this embodiment includes a main ventilator 1 and a bag body 2. The main ventilator 1 communicates with the opening 22 of the bag body 2. The bag body 2 is provided with an air bag 3 for sealing the epiglottis and the glottis of the patient. When the cover is not in use, the air bag 3 is in a dry state. When the patient needs to insert a laryngeal mask for assisted breathing, the capsule body 2 is inserted into the patient's epiglottis through the patient's oral cavity. The glottis is sealed, and air is inflated and pumped into the ventilation main tube 1 to realize assisted breathing for the patient. Among them, the inflatable tube 4 is sleeved in the main ventilator 1. When the capsule body 2 of the laryngeal mask is inserted into the epiglottis of the patient, the outer wall of the main ventilator 1 is in direct contact with the patient's mouth. Clenching tightly will not affect the inflatable tube 4, and the ventilating main tube 1 plays a protective role on the inflatable tube 4, reducing the patient's unconscious bite on the inflatable tube 4 during the treatment process and affecting the use of the laryngeal mask.

In addition, the inflatable tube 4 is located in the main ventilator 1. When the laryngeal mask is inserted into and pulled out of the patient's epiglottis, only the outer wall of the ventilator main tube 1 is in direct contact with the patient's oral cavity. The use of the inflatable tube 4 has no effect on the comfort of the patient. During use, insertion, and extraction, only the outer wall of the ventilating main pipe 1 squeezes and irritates the patient's mouth and throat, and the roundness of the outer wall of the single pipe of the ventilating main pipe 1 is easy to ensure, thereby reducing the time when the ventilating main pipe 1 and the inflatable tube 4 are separately arranged. , The roundness of the outer walls of the two pipes is poor, which will squeeze and stimulate the patient's mouth and throat strongly, thereby enhancing the patient's comfort. In addition, the inflatable tube 4 is placed in the main ventilation tube 1, and the position of the inflatable tube 4 is fixed. The inflatable tube 4 is not affected during the use of the laryngeal mask, and the medical personnel do not need to arrange the inflatable tube 4, thereby strengthening the laryngeal mask. practicality and ease of operation.

In this embodiment, as shown in Figures 2-4, the capsule body 2 can be provided with a fixing hole 24, the airbag 3 is provided with a fixing tube 31, the fixing tube 31 matches the fixing hole 24, and the inflatable tube 4 and the fixing tube 31 connected. First, the fixed tube 31 on the airbag 3 communicates with the inside of the airbag 3, and protrudes from the main body of the airbag 3. Insert the fixed tube 31 into the fixed hole 24 on the bag body 2, and one end of the inflation tube 4 is connected to the opening end of the fixed tube 31. , so as to communicate with the inside of the airbag 3, the airbag 3 can be inflated and deflated through the inflation tube 4, wherein the fixing hole 24 positions and fixes the airbag 3. Specifically, the fixing hole 24 can be a hole with a smaller depth, or a channel with a longer depth. .

In this embodiment, as shown in Fig. 1, Fig. 2, Fig. 5 and Fig. 6, one end of the ventilation main pipe 1 is connected to the connecting portion 21 of the capsule body 2, and a joint 5 is fixed at the opening of the other end, and a joint 5 is provided on the joint 5. The interface 51 communicating with the ventilation main pipe 1 is also provided with an inflation positioning hole 52 for sealing the inflation tube 4 to pass through. The inflation tube 4 is sleeved in the ventilation main pipe 1, and passes through the inflation positioning hole 52 on the joint 5. Here, "sealed through" means that the inflation tube 4 passes through the inflation positioning hole 52, and the outer wall of the inflation tube 4 is in contact with the inflation positioning hole 52. The inner walls of the inflation positioning holes 52 are sealed. The gas in the ventilation main pipe 1 can only enter or output from the interface 51 of the joint 5, and the setting of the joint 5 makes the inflatable pipe 4 and the ventilation main pipe 1 be two independent chambers without interfering with each other. Specifically, the interface 51 on the joint 5 is a standard interface that can match the ventilation tube of the ventilator.

In this embodiment, as shown in FIG. 6 , the inner wall of the joint 5 is provided with a fixing protrusion 53 , and a fixing channel communicating with the inflation positioning hole 52 is formed in the fixing protrusion 53 . The inflatable tube 4 sleeved in the ventilation main pipe 1 passes through the fixed channel formed by the fixed protrusion 53 and passes through the inflation positioning hole 52. The fixed channel formed by the fixed protrusion 53 in the joint 5 fixes the inflatable tube 4. position, thereby reducing or even avoiding the inflatable tube 4 sliding in the inflation positioning hole 52, causing the inflatable tube 4 to be bent in the ventilation main pipe 1 and disconnected from the air bag 3, so as to ensure the connection between the inflatable tube 4 and the air bag 3 and inflate and deflate. Specifically, in order to ensure the tightness between the inflation tube 4 and the fixed protrusion 53 , a sealing ring can be installed between the inflation tube 4 and the fixed protrusion 53 , so that the compression of the fixed protrusion 53 to the inflation tube 4 can also be enhanced. It is also possible to stick the inflatable tube 4 in the fixed channel through adhesives such as glue to ensure the firmness of the inflatable tube 4 .

In this embodiment, as shown in Fig. 1-Fig. 4, a drainage tube 6 is sleeved inside the ventilation main pipe 1, and one end of the drainage tube 6 passes through the connection part 21 and the opening part 22 in turn, and is fixed at the end of the tip part 23. The joint 5 is provided with a drainage positioning hole 54 for sealing the drainage tube 6 through. One end of the drainage tube 6 enters from the drainage positioning hole 54 on the joint 5, passes through the tube of the ventilation main pipe 1 and the capsule body 2, and is fixed at the end of the tip portion 23 of the capsule body 2. The tube 6 passes through the drainage positioning hole 54 , and the outer wall of the drainage tube 6 and the inner wall of the drainage positioning hole 54 are sealed. During the use of the laryngeal mask, the air bag 3 seals the patient's trachea and esophagus, and the lower opening of the drainage tube 6 communicates with the patient's esophagus. Insert a sputum suction tube or a gastric tube to suck it out of the patient's body, so as to reduce or even avoid the blockage of sputum and other substances on the patient's breathing, as well as the adverse effects on the use of the laryngeal mask; 6 Insert a gastric tube to extract the gastric juice out of the patient's body, thereby reducing the occurrence of the patient's gastric juice reflux into the trachea when the air bag 3 is poorly sealed.

The drainage tube 6 is set inside the main ventilation tube 1, which can also reduce the irritation of the patient's throat when the laryngeal mask is used. At the same time, the main ventilation tube 1 can also protect the drainage tube 6 and reduce the biting of the drainage tube 6 by the patient's teeth. . Concretely, in order to enhance the fixing and limiting of the joint 5 to the drainage tube 6, a fixing protrusion 53 for fixing and limiting the drainage tube 6 may also be provided on the joint 5, in order to ensure the fixed position between the fixing protrusion 53 and the drainage tube 6. For tightness, a sealing ring can also be provided between the fixing protrusion 53 and the drainage tube 6, or the drainage tube 6 can be directly glued to the inner wall of the fixing protrusion 53 by glue or the like, so as to improve the sealing performance between the two.

In this embodiment, as shown in FIG. 3 , a clipping groove 25 may also be provided on the capsule body 2 , and the clipping groove 25 matches the drainage tube 6 . The drainage tube 6 passes through the connecting portion 21, the opening 22 and the tip portion 23 of the capsule body 2 in turn, and is fixed at the end of the tip portion 23, and the end of the drainage tube 6 fixed at the tip portion 23 also passes through the airbag 3 Therefore, the setting of the drainage tube 6 has an impact on the ventilation of the capsule body 2 and the sealing of the airbag 3. A snap-in groove 25 is provided at the position where the drainage tube 6 passes in the capsule body 2, and the drainage tube 6 is snapped into the snap-in In the groove 25, the position of the drainage tube 6 is fixed and cannot be moved, thereby ensuring the drainage effect of the drainage tube 6 and reducing the deviation of the drainage tube 6 from affecting the ventilation of the capsule body 2 and the sealing effect of the air bag 3 . Specifically, the drainage tube 6 has a smooth transition without sharp bends. When medical personnel insert a gastric tube or a sputum suction tube in the drainage tube 6 according to needs, the gastric tube or sputum suction tube is not easily bent by the drainage tube 6. In addition, the shape of the gastric tube or sputum suction tube is consistent with that of the drainage tube 6 and also has a smooth transition, which can effectively reduce the accumulation of gastric juice or sputum in the bending part of the gastric tube or sputum suction tube, and the drainage tube 6 The resulting blockage can reduce the resistance to secretion suction and ensure the drainage effect of the drainage tube 6.

In this embodiment, as shown in FIG. 3 and FIG. 4 , a vent hole 211 can be opened on the connecting part 21, and the vent hole 211 is used to communicate with the ventilating main pipe 1 and the opening part 22. There are two vent holes 211 and they are respectively located in the drainage on both sides of the tube 6. The ventilation main pipe 1 communicates with the opening 22 of the capsule body 2 through the two ventilation holes 211 on the connecting part 21 of the bag body 2, and then communicates with the patient's trachea. The doctor can perform assisted breathing on the patient's trachea through the ventilation main pipe 1. Two ventilation holes 211 are set on the 21. On the one hand, the effective area of ventilation main pipe 1 can be increased to ensure assisted breathing for the patient; on the other hand, when the patient has secretions in the trachea, the two ventilation holes 211 are separated They are respectively located on both sides of the drainage tube 6. The chance of secretions blocking the two ventilation holes 211 at the same time is very small. When one ventilation hole 211 is blocked, the other ventilation hole 211 can also ensure that the laryngeal mask can ventilate the patient. , so as to ensure the patient's life support.

In this embodiment, as shown in FIG. 1 and FIG. 2 , the ventilation main pipe 1 is covered with a soft tooth pad 7 , and the soft tooth pad 7 corresponds to the position of the teeth in the patient's oral cavity. When the laryngeal mask is in use, the main ventilator 1 is inserted into the patient's larynx through the patient's mouth. During the use of the laryngeal mask, the patient's teeth clench the ventilator 1 unconsciously, and a soft tooth pad 7 is set on the ventilator 1. During the use of the laryngeal mask Among them, the patient's teeth clenched the soft tooth pad 7, not only can enhance the comfort of the patient, but the soft tooth pad 7 can also protect the ventilation main pipe 1, reducing or even avoiding the occurrence of the patient biting the ventilation main pipe 1 . In addition, the patient's teeth and the soft tooth pad 7 are tightly clenched, which can also limit the position of the main ventilator 1 to ensure the position of the main ventilator 1, thereby ensuring the position of the airbag 3 in the epiglottis of the patient, ensuring that the airbag 3, the sealing effect enhances the usability of the laryngeal mask.

In this embodiment, as shown in FIG. 2 , the ventilation main pipe 1 may include a straight line portion 11 and a bent portion 12, the bent portion 12 is connected to the connecting portion 21 of the capsule body 2, and the bending angle of the bent portion 12 is 90° ~110°. The bending part 12 and the straight part 11 on the main ventilator 1 are arranged in line with the path of the throat of the human body, which not only facilitates the insertion of the main ventilator 1, but also enhances the matching seal between the capsule body 2 and the throat of the patient.

In addition, according to the structure of the epiglottis and the glottis of the human body, the structure of the airbag 3 can be set accordingly, so that the airbag 3 has a certain curvature after inflated, which matches the contact position of the patient. On the one hand, the airbag 3 and the patient's epiglottis The matching of the airbag 3 and the patient's throat can ensure the sealing fit between the airbag 3 and the patient's throat; on the other hand, the airbag 3 will not exert a large squeeze on the internal parts of the patient, thereby enhancing the comfort of the patient.

Embodiment two

This embodiment provides an auxiliary breathing apparatus, which includes a ventilator and the laryngeal mask described in Embodiment 1. The ventilation tube of the ventilator communicates with the ventilation main pipe 1 of the laryngeal mask.

The auxiliary breathing device provided in this embodiment, when the patient is under anesthesia or is injured or critically ill and needs an auxiliary breathing device to assist breathing, the laryngeal mask is inserted into the epiglottis of the patient, and gas is filled into the inflatable tube 4, The air bag 3 then inflates to seal the patient's epiglottis and glottis. After the laryngeal mask is fixed, the ventilator is turned on. The ventilator inflates and pumps air into the patient's body through the ventilation tube and the ventilator 1 of the laryngeal mask to assist the patient. Take a breath.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. A laryngeal mask, characterized in that it comprises a ventilation main pipe (1) and a capsule (2), and the capsule (2) sequentially comprises a connecting portion (21), an opening (22) and a tip along its length direction part (23), one end of the ventilation main pipe (1) is fixed on the connecting part (21), and communicates with the opening part (22); the air bag (3) is arranged on the bag body (2) ), the venting main pipe (1) is sleeved with an inflatable tube (4), and the inflatable tube (4) communicates with the air bag (3). 2. The laryngeal mask according to claim 1, characterized in that, the capsule (2) is provided with a fixing hole (24), the air bag (3) is provided with a fixing tube (31), and the fixing The tube (31) matches the fixing hole (24), and the inflation tube (4) communicates with the fixing tube (31). 3. The laryngeal mask according to claim 1 or 2, characterized in that, one end of the ventilating main pipe (1) is connected to the connecting portion (21) of the bag (2), and the opening of the other end is fixed with a A joint (5), the joint (5) is provided with an interface (51) communicated with the ventilation main pipe (1), and is also provided with an inflation positioning hole (52) for sealing the inflation tube (4) through ). 4. The laryngeal mask according to claim 3, characterized in that, the inner wall of the joint (5) is provided with a fixed protrusion (53), and the fixed protrusion (53) is formed in the inflation positioning hole ( 52) Connected fixed channel. 5. The laryngeal mask according to claim 4, characterized in that a drainage tube (6) is sheathed in the ventilation main pipe (1), and one end of the drainage tube (6) passes through the connecting part in sequence (21), the opening (22), fixed at the end of the tip (23); the joint (5) is provided with a drainage positioning for the drainage tube (6) to pass through hole (54). 6. The laryngeal mask according to claim 5, characterized in that, the capsule (2) is provided with a locking groove (25), and the locking groove (25) is connected to the drainage tube (6). match. 7. The laryngeal mask according to claim 5, characterized in that, a vent hole (211) is opened on the connecting part (21), and the vent hole (211) is used to communicate with the ventilating main pipe (1) and There are two openings (22) and two air holes (211) located on both sides of the drainage tube (6). 8. The laryngeal mask according to claim 1, characterized in that, the ventilation main pipe (1) is covered with a soft tooth pad (7), and the soft tooth pad (7) corresponds to the position of the teeth in the patient's oral cavity . 9. The laryngeal mask according to claim 1, characterized in that, the ventilation main pipe (1) comprises a straight line portion (11) and a bent portion (12), and the bent portion (12) is connected to the capsule (2) The connection part (21) is connected, and the bending angle range of the bending part (12) is 90°-110°. 10. An auxiliary breathing device, characterized in that it comprises a ventilator and the laryngeal mask according to any one of claims 1-9, the ventilation tube of the ventilator communicates with the ventilating main pipe (1) of the laryngeal mask .