CN111905211A

CN111905211A - Laryngeal mask

Info

Publication number: CN111905211A
Application number: CN202010991681.8A
Authority: CN
Inventors: 方峥评
Original assignee: Anhui Exploration Medical Device Technology Co ltd
Current assignee: Anhui Exploration Medical Device Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2020-11-10

Abstract

The invention discloses a laryngeal mask, which comprises a tube body and a mask body, wherein the tube body is provided with a tube connecting end, the tube body is provided with a breathing cavity channel for the circulation of breathing gas, the mask body is provided with a mask connecting end, the mask connecting end is hermetically connected with the tube connecting end, the mask body is provided with a breathing cavity communicated with the breathing cavity channel and a breathing port for communicating the breathing cavity with a respiratory tract; the peripheral ring of the respiration opening is provided with an air bag which is used for being in sealing and abutting joint with the respiration opening of a patient, the air bag is provided with a guide assembly, and when the air bag is used for air exhaust, the guide assembly guides the air bag to shrink according to the outline of the inflation state of the air bag. The technical scheme of the invention can solve the problem that the implantation of the laryngeal mask is influenced by the deformation of the air bag after air exhaust.

Description

Laryngeal mask

Technical Field

The invention relates to the technical field of medical instruments, in particular to a laryngeal mask.

Background

The laryngeal mask is an artificial airway device, which can not only enable a patient to keep breathing autonomously in the operation process, but also implement positive pressure ventilation. Present laryngeal mask sets up the gasbag usually including the cover body and body on the cover body, during the use, the patient's larynx is implanted to the cover body, utilizes gasbag and patient's larynx butt and realizes the sealed between the cover body and the larynx to be convenient for implant patient's larynx for making the laryngeal mask, and make the laryngeal mask implant the back sealed respond well, the gasbag sets up to can bleed and gas filled structure. However, the air bag can deform after air suction, which possibly causes the shape of the mask body to be changed into a shape which is not easy to implant, thereby influencing the implantation of the laryngeal mask.

Disclosure of Invention

The invention mainly aims to provide a laryngeal mask, and aims to solve the problem that implantation of the laryngeal mask is affected due to deformation of an air bag after air suction.

In order to achieve the above object, the present invention provides a laryngeal mask, comprising: the breathing device comprises a tube body and a control device, wherein the tube body is provided with a tube connecting end and is provided with a breathing cavity channel for the circulation of breathing gas; the mask body is provided with a mask connecting end which is hermetically connected with the tube connecting end, the mask body is provided with a breathing cavity communicated with the breathing cavity channel and a breathing port for communicating the breathing cavity with a respiratory tract; the peripheral ring of the respiration opening is provided with an air bag which is used for being in sealing and abutting joint with the respiration opening of a patient, the air bag is provided with a guide assembly, and when the air bag is used for air exhaust, the guide assembly guides the air bag to shrink according to the outline of the inflation state of the air bag.

Optionally, the guiding assembly comprises a plurality of guiding portions arranged along the circumferential direction of the airbag, and each guiding portion maintains the same shape during the air exhaust process and the air inflation process of the airbag.

Optionally, the guide portion is embedded in a wall of the airbag.

Alternatively, the guide portion is provided on an inner wall surface of the airbag.

Alternatively, the guide portion is a reinforcing bead provided on an inner wall surface of the airbag.

Optionally, the reinforcing ribs are arranged in an arc shape, and two adjacent reinforcing ribs intersect at least at one point.

Optionally, the reinforcing bead is integrally formed with a wall of the airbag.

Optionally, the mask body further has a mask implanting end opposite to the mask connecting end, and the outer diameter of the mask body is gradually enlarged and then gradually reduced from the mask connecting end to the mask implanting end.

Optionally, the outer surface of the implantation end of the cap is convexly curved.

Optionally, the tube body further has a tube free end opposite to the tube connection end, the tube free end being provided with a hand-held protruding handle.

According to the technical scheme, the breathing cavity channel is arranged on the pipe body, the breathing cavity channel is used for breathing gas to flow, the breathing cavity communicated with the breathing cavity channel is arranged on the mask body, the breathing opening is arranged on the mask body, when the laryngeal mask is implanted into the throat of a patient, the breathing opening is used for communicating the breathing cavity with the respiratory tract of the patient, the air bag of the patient at the periphery of the breathing opening is in sealing and abutting joint with the breathing orifice of the patient through the air bag, so that sealing between the laryngeal mask and the throat is guaranteed, the guiding assembly is arranged on the air bag, and the air bag is guided to be reduced according to the outline of the inflating state of the air bag when the air bag is deflated through the guiding assembly, so that the shape of the air bag after being deflated is the same as or similar to the shape after being.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Figure 1 is a schematic structural view of an embodiment of a laryngeal mask in accordance with the invention;

figure 2 is a rear view of the laryngeal mask of figure 1;

FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 2;

figure 4 is a front view of the laryngeal mask of figure 1;

figure 5 is a schematic view of the laryngeal mask of figure 1 from another perspective;

FIG. 6 is a schematic view of the laryngeal mask shown in FIG. 1, illustrating the structure from the mask body to the tube;

figure 7 is a right side view of the laryngeal mask of figure 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Pipe body	212	Limiting groove
101	Pipe connection end	220	Breathing mouth
				102	Free end of pipe	221	Air bag
103	Hand-held convex handle	230	Digestion chamber
				110	Respiratory tract	231	First sub-chamber
120	Digestive tract	232	Second sub-chamber
				121	The first sub-channel	240	Digestion port
122	Second sub-channel	241	Convex part
				200	Cover body	242	Reinforced convex rib
201	Mask connection end	250	Circulation port
				202	Hood implant end	251	First sub-opening
210	Breathing chamber	252	Second sub-port
				211	Boss

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a laryngeal mask.

In one embodiment of the present invention, as shown in fig. 1, the laryngeal mask includes a tube 100 and a mask body 200, the tube 100 having a tube connection end 101, the mask body 200 having a mask connection end 201, the mask connection end 201 being sealingly connected to the tube connection end 101. The tube 100 is provided with a breathing cavity 110, the breathing cavity 110 is used for the circulation of breathing gas, the mask body 200 is provided with a breathing cavity 210 communicated with the breathing cavity 110 and a breathing port 220, when the laryngeal mask is implanted in the throat of a patient, the breathing cavity 110 is communicated with the respiratory tract of the patient through the breathing port 220. The periphery of the respiration opening 220 is provided with an air bag 221, the air bag 221 is used for being in sealing contact with the respiration opening of the patient when the laryngeal mask is implanted into the throat of the patient, the air bag 221 is provided with a guiding assembly, and when the air bag 221 is exhausted, the guiding assembly guides the air bag 221 to shrink according to the outline of the inflated state of the air bag 221.

According to the technical scheme, the breathing cavity channel 110 is arranged on the tube body 100, breathing gas flows through the breathing cavity channel 110, the breathing cavity chamber 210 communicated with the breathing cavity channel 110 is arranged on the mask body 200, the breathing opening 220 is arranged on the mask body 200, when the laryngeal mask is implanted into the throat of a patient, the breathing opening 220 is used for communicating the breathing cavity chamber 210 with the respiratory tract of the patient, the air bag 221 of the patient at the periphery of the breathing opening 220 is in sealing and abutting connection with the breathing opening of the patient through the air bag 221, so that sealing between the laryngeal mask and the throat is guaranteed, in addition, the air bag 221 is provided with the guide assembly, the air bag 221 is guided to be reduced according to the outline of the inflation state of the air bag 221 when the air bag 221 is used for air suction, the shape of the air bag 221 is the same as or similar to the shape after inflation, and the serious deformation of the.

In one embodiment, the guiding assembly includes a plurality of guiding portions arranged along the circumferential direction of the airbag 221, and each guiding portion maintains the same shape during the inflation and deflation of the airbag 221, so that during the deflation of the airbag 221, the shape of the airbag 221 can be kept unchanged or changed slightly under the action of the guiding portions, and the outer wall surface of the airbag 221 is kept flat, thereby avoiding the inconvenience of implantation of the laryngeal mask caused by the serious shape change after the deflation of the airbag 221.

In one embodiment, the guiding portion is embedded in the wall of the balloon 221, so that the guiding portion can guide the balloon 221 to keep the original shape during the air suction process, and simultaneously avoid the guiding portion from damaging the tissue of the patient's larynx.

In one embodiment, the guiding portion is disposed on the inner wall surface of the balloon 221, so that the guiding portion can prevent the guiding portion from damaging the tissue of the patient's larynx while the guiding balloon 221 maintains its original shape during the evacuation process.

Referring to fig. 2 and 3, in one embodiment, the guide portion is a reinforcing bead 242 provided on an inner wall surface of the airbag 221. The reinforcing convex rib 242 is arranged on the inner wall surface of the air bag 221, so that the structural strength of the bag wall of the air bag 221 at the reinforcing convex rib 242 is enhanced, the deformation degree of the reinforcing convex part is smaller when the bag wall of the air bag 221 is deformed by air suction, the shape of the air bag 221 in an inflated state is better kept, implantation of a laryngeal mask is facilitated, and the original shape of the air bag 221 can be recovered more quickly and smoothly after inflation. Moreover, since the reinforcing ribs 242 are provided on the inner wall surface of the balloon 221, the reinforcing ribs 242 can enhance the structural strength of the balloon wall of the balloon 221 and at the same time do not directly contact the tissue of the patient's throat to damage the tissue of the throat.

In some embodiments, the reinforcing ribs 242 are disposed in an arc shape, and two adjacent reinforcing ribs 242 intersect at least one point. The reinforcing ribs 242 are arranged into an arc shape, and two adjacent reinforcing ribs 242 are at least intersected at one point, so that in the inflation process, all parts of the air bag 221 can be kept in a flat state under the guiding and pulling of the reinforcing ribs 242, and the implantation of the laryngeal mask is facilitated.

In one embodiment, the reinforcing ribs 242 are arc-shaped, each reinforcing rib 242 is combined with the inner wall surface of the air bag 221 to form a fish scale shape, and the fish scale-shaped reinforcing ribs 242 enable each part of the air bag 221 to keep a flat state under the guiding and pulling of the reinforcing ribs 242 during the air suction process of the air bag 221, so that the implantation of the laryngeal mask is facilitated.

In one embodiment, the reinforcing ribs 242 are integrally formed with the wall of the air bag 221, so that the forming process of the laryngeal mask is simple and convenient and is not easy to damage.

In one embodiment, mask body 200 further has a mask insertion end 202 opposite mask insertion end 201, and the outer diameter of mask body 200 tapers from mask insertion end 201 to mask insertion end 202, i.e. mask insertion end 202 has a smaller dimension, the size of the middle portion of mask body 200 increases with respect to mask insertion end 202, and the size of mask insertion end 201 decreases with respect to the size of the middle portion of mask body 200. In the process of implanting the laryngeal mask into the throat of a patient, the mask implanting end 202 firstly reaches the throat of the patient, the size of the mask implanting end 202 is small, so that the mask implanting end 202 can easily enter the throat, the size of the middle part of the laryngeal mask is large, and the sealing between the laryngeal mask and the throat can be well guaranteed; when the implantation of the laryngeal mask is completed, the mask body 200 is located in the supraglottic area with a large space, the junction of the mask body 200 and the tube body 100 is located at the part with a small throat size, and at the moment, the mask connecting end 201 is small in size, so that the laryngeal mask extrudes the part with the small throat size less, and the laryngeal mask is prevented from extruding the throat greatly to cause damage to the tissues of the throat.

In one embodiment, the outer surface of the mask insertion end 202 is convexly curved. By providing the outer surface of the mask implantation end 202 as a convex arc, the process of the mask implantation end 202 entering the throat is smoother.

In the above embodiment, the tube body 100 further has a tube free end 102 opposite to the tube connecting end 101, and the tube free end 102 is provided with a handheld protruding handle 103, so that an operator can conveniently carry out implantation, extraction, adjustment and the like by holding the tube free end 102. For example, the two sides of the free end 102 of the tube are respectively provided with a lug to form a hand-held protruding handle 103, so that the outer diameter of the hand-held protruding handle 103 is larger than the outer diameter of the rest part of the tube body 100, after the laryngeal mask is implanted into the throat of a patient, in order to make the implantation and ventilation process more smoothly, the free end of the tube body 100 is usually fixed near the lips of the patient by using an adhesive tape, and the outer diameter of the hand-held protruding handle 103 is larger than the outer diameter of the rest part of the tube body 100, so that the joint of the hand-held protruding handle 103 and the tube body 100 forms a concave structure, thereby being more convenient for. In one embodiment, the handle 103 is smoothly transitioned into the tube 100 to better conform to the adhesive tape.

Referring to fig. 4 and 5, in an embodiment, the mask body 200 has a front side facing the respiratory tract and a rear side facing away from the respiratory tract, the respiratory orifice 220 is disposed on the front side, the rear side of the laryngeal mask is arched, a boss 211 is disposed in the respiratory chamber 210, the boss 211 has an inclined surface facing the respiratory tract 110 and the respiratory orifice 220, so that when the laryngeal mask is implanted in the throat of a patient, the mask body 200 deforms under the action of the extrusion force of the throat, and one end of the mask body 200, which is inserted into the throat first, is drawn close to the arched concave portion, so that the shape of the respiratory orifice 220 changes, and the boss 211 is driven to approach the plane where the respiratory orifice 220 is located, so that the mask body 200 fits the opening of the respiratory tract better, thereby reducing air dead space and; and the setting of boss 211 makes implantation ventilation in-process, and when operating personnel inserted the respiratory track with the inspection device through breathing chamber 210, the inclined plane of boss 211 can play the guide effect to the inspection device, made the inspection device can insert the respiratory track more accurately, reduced the probability that the inspection device stabbed the respiratory track wall.

In an embodiment, the protrusion 211 and the sidewall of the breathing chamber 210 are smoothly transited, so that the protrusion 211 guides the inserted inspection device, and the inspection device can more smoothly pass through the connection between the protrusion 211 and the sidewall of the breathing channel 110, thereby making the insertion of the inspection device more smooth.

In one embodiment, the edge of the boss 211 away from the respiratory tract 110 is rounded. When the boss 211 is close to the plane where the breathing hole 220 is under the driving of the cover body 200 which deforms, the boss 211 may contact with the throat, and when the boss 211 contacts with the throat, the fillet arranged at the edge of the boss 211 reduces the stimulation of the boss 211 to the throat, thereby reducing the discomfort of the patient caused by the three-cavity flushable fish-mouth type laryngeal mask airway tube.

In an embodiment, the boss 211 is provided with a limiting groove 212 extending from the breathing cavity 110 to the breathing port 220, when the checking device is inserted from the breathing cavity 110, the limiting groove 212 can guide and limit the checking device, so that the checking device can be inserted into a required position more accurately, and the checking device is not easy to move randomly after being inserted, thereby ensuring that the implantation and ventilation process is smoother.

In an embodiment, the boss 211 is provided with a plurality of spacing grooves 212 at intervals, so that the insertion position of the inspection device has more choices, and an operator can select different spacing grooves 212 according to actual requirements.

In one embodiment, the cross section of the limiting groove 212 is arc-shaped, and the checking device generally comprises a cylindrical tubular structure, so that the limiting groove 212 with the arc-shaped cross section can be more attached to the checking device, and the guiding and limiting effect of the limiting groove 212 on the checking device is better.

Referring to fig. 2 and 5, in one embodiment, the tube 100 has an alimentary canal 120, the housing 200 has an alimentary chamber 230 in communication with the alimentary canal 120, the alimentary chamber 230 has an alimentary port 240 in communication with the alimentary canal; the digestion chamber 230 comprises a first sub-chamber 231 and a second sub-chamber 232, and a communication channel is arranged between the first sub-chamber 231 and the second sub-chamber 232; the rear side wall of the digestion chamber 230 is provided with a circulating port 250 for waste liquid generated in the implantation and ventilation process to enter the digestion chamber 230; the digestive tract 120 comprises a first sub-tract 121 and a second sub-tract 122, the first sub-tract 121 is communicated with the first sub-chamber 231, the second sub-tract 122 is communicated with the second sub-chamber 232, and the first sub-tract 121 is used for allowing cleaning matters to enter the digestive chamber 230 so as to flush waste liquid generated in the implantation ventilation process into the second sub-tract 122 through a communication channel and discharge the waste liquid out of the patient. Namely, the circulation port 250, the first sub-chamber 231, the communication channel, the second sub-chamber 232, and the second sub-chamber 122 form a waste liquid discharge channel.

It is understood that in this embodiment, the tube 100 further has a breathing lumen 110, the mask 200 further has a breathing chamber 210 communicating with the breathing lumen 110, and the breathing chamber 210 has a breathing port 220 communicating with the respiratory tract. During the implantation ventilation process, the breathing gas enters the breathing chamber 210 through the breathing cavity 110, so that the breathing gas is provided for the patient, and the patient can breathe normally during the implantation ventilation process; the first sub-cavity channel 121 is connected with a suction source, the second sub-cavity channel 122 is connected with a positive pressure source or is communicated with the atmosphere, or the second sub-cavity channel 122 is connected with the suction source, the first sub-cavity channel 121 is connected with the positive pressure source or is communicated with the atmosphere, so that waste liquid such as saliva, gastric juice and blood generated by a patient firstly enters the digestion chamber 230 through the circulation port 250 or the digestion port 240 under the action of the suction source and then is discharged out of the patient body through the first sub-cavity channel 121 or the second sub-cavity channel 122 which is communicated with the digestion chamber 230 in the implantation ventilation process, and discomfort of the patient caused by the fact that the waste liquid generated in the implantation ventilation process enters the respiratory tract is effectively avoided.

In one embodiment, the circulation port 250 includes a first sub-port 251 and a second sub-port 252, the first sub-port 251 is disposed in the first sub-chamber 231, and the second sub-port 252 is disposed in the second sub-chamber 232. By respectively arranging the first sub-port 251 and the second sub-port 252 corresponding to the first sub-chamber 231 and the second sub-chamber 232, the passage of waste liquid into the digestion chamber 230 is increased in the circulation process of waste liquid generated in the implantation and ventilation process, and the waste liquid generated in the implantation and ventilation process is discharged out of the body of a patient in time.

In an embodiment, the first sub-cavity channel 121, the second sub-cavity channel 122 and the breathing cavity channel 110 are parallel to each other, so that the thicknesses of the cavity wall of the first sub-cavity channel 121, the cavity wall of the second sub-cavity channel 122 and the cavity wall of the breathing cavity channel 110 are uniform at each position in the length direction of the tube body 100, and thus the tube body 100 is more stable in structure and is not easy to break.

In an embodiment, the cross section of the tube 100 is oval, that is, the tube 100 is a flat tube, on the same cross section of the tube 100, the center of the respiratory tract 110 coincides with the center of the oval, the first sub-tract 121 and the second sub-tract 122 are symmetrically disposed on both sides of the respiratory tract 110, and at the same time, the cover 200 is also flat, and the digestive tract 240 is also oval, that is, the shape of the digestive tract 240 is adapted to the distribution positions of the first tract and the second tract, so that the waste liquid can be discharged more quickly.

Referring to fig. 6 and 7, in one embodiment of the present invention, the laryngeal mask includes a tube 100 and a mask body 200. Body 100 has a tube connection end 101 and mask body 200 has opposite mask connection end 201 and mask insertion end 202, mask connection end 201 sealingly connected to tube connection end 101. The tube body 100 is provided with a digestive tract 120, the digestive tract 120 is used for the circulation of waste liquid generated in the implantation ventilation process, the cover body 200 is provided with a digestive chamber 230, and the digestive chamber 230 is communicated with the digestive tract 120. The mask body 200 further has a front side facing the respiratory tract and a rear side facing away from the respiratory tract, the digestive chamber 230 is provided with a digestive port 240, the digestive chamber 230 communicates with the digestive tract of the patient through the digestive port 240 when the laryngeal mask is implanted in the throat of the patient, and the digestive port 240 is disposed adjacent to the mask implantation end 202, a wall of the digestive port 240 is receded at the rear side in a direction toward the connection end, and/or a wall of the digestive port 240 is protruded forward at the front side in a direction away from the connection end.

The technical scheme of the invention is that a digestive tract 120 for circulating waste liquid generated in the implantation and ventilation process is arranged on a tube body 100, a digestive chamber 230 communicated with the digestive tract 120 is arranged on a mask body 200, and a digestive port 240 is arranged, so that the digestive chamber 230 is communicated with the digestive tract of a patient when a laryngeal mask is implanted into the throat of the patient, the digestive port 240 is arranged close to a mask implantation end 202, the mouth wall of the digestive port 240 is backwards contracted towards a connecting end at the rear side, and/or the mouth wall of the digestive port 240 is forwards convex at the front side back to the direction of the connecting end, so that the mouth wall of the digestive port 240 is staggered at the front side and the rear side, namely the length of the front side wall of the digestive port 240 is different from that of the rear side wall, after the laryngeal mask is implanted, the extrusion force around the mask implantation end 202 is reduced or disappeared, air can rapidly enter a gap between the front side wall and the rear side wall and separate the front side wall from the rear, so that the digestion opening 240 is restored to the original shape, and the blockage of the digestion opening 240 caused by the fact that the front side wall and the rear side wall are always attached is avoided. And, when the oral wall of digestion mouth 240 is at the anterior side when the direction of link is protruding forward dorsad, the length of the preceding lateral wall of digestion mouth 240 is greater than the length of back lateral wall to the guarantee preceding lateral wall can seal the butt effectively at the digestion mouth, in order to avoid the jam of digestion mouth 240, guarantee the sealed effect after the implantation of laryngeal mask, make implantation ventilation process go on smoothly.

In one embodiment, the edge of the digestive tract 240 is provided with a plurality of protrusions 241, and the plurality of protrusions 241 are close to each other due to the surrounding pressing force during the implantation of the laryngeal mask into the larynx, so that the digestive tract 240 is contracted. In the process of implanting patient's larynx at the laryngeal mask, produce the power of mutual extrusion between patient's larynx and the lateral wall of laryngeal mask, and make a plurality of convex parts 241 draw close each other, make digestion 240 dwindle, thereby make digestion 240 can aim at patient's alimentary canal better, conveniently implant, when the perisporium edge entering alimentary canal of digestion chamber 230 was intraoral, digestion 240 expands, until the perisporium of digestion chamber 230 and the inner wall of digestion canal mouth form sealedly, thereby keep apart respiratory tract and alimentary canal effectively, need not to adjust the inserted position repeatedly, reduce operating time.

In one embodiment, the digestion opening 240 is flat. In the process of implanting the laryngeal mask into the patient's larynx, the flatly disposed alimentary port 240 is more easily compressed, thereby enabling the mask implantation end 202 to be reduced, making the laryngeal mask implantation more convenient, and when the laryngeal mask implantation is completed, the mask implantation end 202 is located in the supraglottic region with a larger space, and the alimentary port 240 can automatically recover when the extrusion force is reduced or disappears.

In one embodiment, the digestion opening 240 is oval in shape. The digestion opening 240 is oval, so that the requirement that the digestion opening 240 is flat and the laryngeal mask is convenient to implant is met, gaps close to a circle are reserved at two ends of the long radius of the digestion opening 240 when the digestion opening 240 is compressed due to extrusion force, and the situation that the digestion opening 240 is blocked due to the fact that the periphery of the digestion opening 240 is completely attached in a compressed state is avoided.

In one embodiment, a plurality of protrusions 241 are respectively provided on the front side and the rear side. The plurality of convex parts 241 are respectively arranged on the front side and the rear side, so that in the implantation process of the laryngeal mask, the convex parts 241 on the front side and the rear side are close to each other at the same time, the digestion hole 240 is reduced towards the middle part of the original digestion hole 240 in a gathering mode, and the implantation of the laryngeal mask is facilitated.

In one embodiment, the extending direction of the convex portion 241 at the front side and the extending direction of the convex portion 241 at the rear side intersect at a point within the range of the digestion opening 240. In the implantation process of the laryngeal mask, each convex part 241 is gathered towards one point in the range of the digestion opening 240, so that the digestion opening 240 is narrowed towards one point in the original digestion range in a gathering mode, and the implantation of the laryngeal mask is facilitated.

In an embodiment, four protrusions 241 are provided, and the four protrusions 241 are respectively provided at four top corners of the elliptical inscribed quadrangle. When the laryngeal mask is implanted into the patient's larynx, a mutual pressing force is generated between the patient's larynx and the peripheral wall of the digestion chamber 230, and the four protrusions 241 are closed towards the center of the digestion opening 240, so that the digestion opening 240 is narrowed, and the digestion opening 240 can be better aligned with the digestive tract. And the peripheral wall of the digestion chamber 230 is tapered from one end far away from the digestion opening 240 to the digestion opening 240, so that the four convex parts 241 are more easily closed towards the center direction of the ellipse, and the situation that the convex parts 241 are rolled up to cause unsmooth insertion in the implantation process of the laryngeal mask is avoided.

In another embodiment, the shape of the digestive tract 240 is the shape of the contour of the superimposed ellipses with two coincident centers, unequal long radii and unequal short radii, the two ellipses intersect at four points, and the protrusions 241 are respectively arranged at the four points, when the laryngeal mask is implanted in the patient's larynx, a mutual squeezing force is generated between the patient's larynx and the peripheral wall of the digestive tract 230, and the four protrusions 241 are closed towards the center direction of the ellipses, so that the digestive tract 240 is narrowed, and the digestive tract 240 can be better aligned with the digestive tract.

In other embodiments, the shape of the digestion opening 240 and the number and location of the protrusions 241 may be adaptively adjusted.

In one embodiment, the peripheral wall thickness of the alimentary port 240 is less than the wall thickness of the lumen wall of the digestion chamber 230, making the alimentary port 240 more prone to deformation and narrowing of the opening during implantation, which facilitates implantation of the laryngeal mask.

In one embodiment, the inner side wall of the digestion chamber 230 is provided with a blocking rib, when the digestion opening 240 is reduced due to extrusion force during the implantation process, the inner side of the peripheral wall of the digestion opening 240 may be attached together due to the extrusion force, while the laryngeal mask is generally made of a material with a smooth surface, the inner side of the opening wall of the digestion opening 240 is difficult to separate by itself after being attached together due to the extrusion force, and the blocking rib can block the blockage of the digestion opening 240, thereby facilitating the smooth implantation and ventilation process.

In one embodiment, the barrier ribs are positioned within the digestion chamber 230 proximate to the digestion orifice 240. Because the peripheral wall of the digestion chamber 230 is arranged from the end far away from the digestion port 240 to the digestion port 240 in a tapered manner, the port wall of the digestion port 240 is more easily attached and sealed compared with the peripheral walls of other parts of the digestion chamber 230, and the blocking convex ribs are arranged in the digestion chamber 230 close to the digestion port 240, so that the blocking convex ribs can effectively play a role, and the probability of blocking the digestion port 240 after the laryngeal mask is implanted is further reduced.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A laryngeal mask, comprising:

the breathing device comprises a tube body and a control device, wherein the tube body is provided with a tube connecting end and is provided with a breathing cavity channel for the circulation of breathing gas; and the number of the first and second groups,

the mask body is provided with a mask connecting end which is hermetically connected with the tube connecting end, the mask body is provided with a breathing cavity communicated with the breathing cavity channel and a breathing port for communicating the breathing cavity with a respiratory tract;

the peripheral ring of the respiration opening is provided with an air bag which is used for being in sealing and abutting joint with the respiration opening of a patient, the air bag is provided with a guide assembly, and when the air bag is used for air exhaust, the guide assembly guides the air bag to shrink according to the outline of the inflation state of the air bag.

2. The laryngeal mask of claim 1, wherein the guide assembly comprises a plurality of guide portions arranged in a circumferential direction of the balloon, each guide portion maintaining the same shape during deflation and inflation of the balloon.

3. The laryngeal mask of claim 2, wherein the guide portion is embedded within a wall of the balloon.

4. The laryngeal mask according to claim 2, characterised in that the guide portion is provided on an inner wall surface of the balloon.

5. The laryngeal mask according to claim 4, characterised in that the guide portion is a reinforcing bead provided on the inner wall surface of the balloon.

6. A laryngeal mask according to claim 5, characterised in that the reinforcing ribs are arranged in an arc, adjacent reinforcing ribs intersecting at least at one point.

7. A laryngeal mask according to claim 5, characterised in that the reinforcing rib is formed integrally with the wall of the balloon.

8. The laryngeal mask of any one of claims 1 to 7, wherein the mask body further has a mask insertion end opposite the mask attachment end, the outer diameter of the mask body tapering from the mask attachment end to the mask insertion end.

9. The laryngeal mask of claim 8, wherein the outer surface of the implant end of the mask is convexly curved.

10. A laryngeal mask according to any one of claims 1 to 7, characterised in that the tube body further has a tube free end opposite the tube connecting end, which tube free end is provided with a hand-held lug.