CN211050580U

CN211050580U - Mask body and laryngeal mask

Info

Publication number: CN211050580U
Application number: CN201921842964.5U
Authority: CN
Inventors: 方峥评; 李文献
Original assignee: Anhui Exploration Medical Device Technology Co ltd
Current assignee: Anhui Exploration Medical Device Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-21
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a cover body and laryngeal mask, cover body coupling is in the one end of the connecting pipe of laryngeal mask, the cover body includes body and gasbag, the body has the front side towards the respiratory track, the rear side of respiratory track dorsad, insert the end of inserting of throat earlier and keep away from the link that inserts the end, the link is connected with the connecting pipe, the body is equipped with and is used for breathing the cavity with the respiratory track intercommunication and be used for the digestion cavity with the alimentary canal intercommunication, it is located the front side to breathe the cavity, digestion cavity is located the rear side, the front side is equipped with the breathing opening who is used for intercommunication breathing cavity and respiratory track, the gasbag ring is located and is breathed open-ended edge, form sealedly with patient's breathing road junction in the treatment process, one side and the breathing open-ended edge fastening of gasbag, the opposite side is at the extending direction skew of link towards the. The technical scheme of the utility model can alleviate the extrusion of laryngeal mask to patient's tissue when forming better sealed effect.

Description

Mask body and laryngeal mask

Technical Field

The utility model relates to the technical field of medical equipment, in particular to cover body and 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. During use, the laryngeal mask needs to be inserted into the patient through the throat. In the related art, the size of the end of the mask body close to the connecting tube is generally large, and in order to ensure that the mask has a good sealing effect after being inserted, an air bag is generally arranged on the mask, so that the mask generates a large extrusion force on the tissues of a patient after being inserted, and the patient feels discomfort.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a cover body, which aims to form better sealing effect and simultaneously relieve the extrusion of the laryngeal mask to the tissues of a patient.

In order to achieve the above object, the present invention provides a cover body connected to one end of a connecting pipe of a laryngeal mask, the cover body includes: the body is provided with a front side facing the respiratory tract, a rear side facing away from the respiratory tract, an insertion end inserted into the throat part firstly and a connecting end far away from the insertion end, the connecting end is connected with the connecting pipe, the body is provided with a breathing cavity communicated with the respiratory tract and a digestive cavity communicated with the digestive tract, the breathing cavity is positioned at the front side, the digestive cavity is positioned at the rear side, and the front side is provided with a breathing opening used for communicating the breathing cavity with the respiratory tract; and the air bag is annularly arranged on the edge of the breathing opening so as to form sealing with the breathing orifice of a patient in the treatment process, one side of the air bag is fixed with the edge of the breathing opening, and the other side of the air bag is offset towards the extending direction of the connecting pipe at the connecting end, so that the part of the air bag at the connecting end and the connecting pipe form an acute angle.

Optionally, the airbag tapers from its middle section to the connection end, and the airbag forms an arcuate cushion section at the connection end.

Optionally, one side of the buffer section, which is away from the body, is offset towards the extending direction of the connecting pipe, and an acute angle is formed between the buffer section and the connecting pipe at the position of the connecting end.

Optionally, the balloon is annular to fit the shape of the breathing opening.

Optionally, the air bag is connected with the connecting pipe in a smooth transition mode.

The utility model also provides a laryngeal mask, include as above any one in all schemes the cover body and connecting pipe, the connecting pipe is equipped with respiratory cavity way and digestive tract, respiratory cavity way one end with respiratory cavity intercommunication, respiratory cavity way's the other end and the breathing equipment intercommunication that is used for providing the breathing gas, digestive tract's one end with digestive cavity intercommunication, digestive tract's the other end and external environment intercommunication.

Optionally, the digestive tract comprises a first half tract and a second half tract both communicated with the digestive chamber, one side of the digestive chamber and one side of the respiratory chamber share a peripheral wall, and the other side of the digestive chamber is provided with a circulation hole.

Optionally, an inflation tube is arranged on the airbag, and a holding groove for holding the inflation tube is arranged on the outer side wall of the connecting tube.

Optionally, the both sides edge of holding tank is equipped with spacing arch, the gas tube with the spacing protruding elasticity joint of the both sides of holding tank.

Optionally, one end of the inflation tube connected with the airbag is arranged on one side of the airbag close to the body.

The utility model fixes one side of the air bag and the edge of the breathing opening, and deflects the other side of the air bag towards the extending direction of the connecting pipe at the connecting end, so that the air bag forms an acute angle with the connecting pipe at the position of the connecting end, when the laryngeal mask is inserted into the throat of a patient, the air bag and the breathing passage of the patient form a seal, because the air bag forms an acute angle with the connecting pipe at the position of the connecting end, when the air bag is extruded, the air bag deforms under the action of extrusion force, the connecting end of the air bag is close to the connecting pipe, and the included angle formed between the air bag and the connecting pipe is reduced, when the extrusion force applied to the air bag is reduced, the air bag recovers to deform, so that the included angle formed between the air bag and the connecting pipe is increased, namely, the air bag can not only form a seal with the breathing passage of the patient under the action of gas filled, so that the extrusion force applied to the tissues of the respiratory orifice of the patient can be more stably kept in a preset range, the extrusion of the laryngeal mask to the tissues of the patient is relieved, and the discomfort of the patient is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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.

Fig. 1 is a schematic view of the overall structure of a laryngeal mask in an embodiment of the present invention;

fig. 2 is a schematic view of a first view angle of a laryngeal mask in an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2;

fig. 4 is a schematic diagram of a second view angle of the laryngeal mask in an embodiment of the present invention;

fig. 5 is a schematic diagram of a third viewing angle of the laryngeal mask in an embodiment of the present invention;

fig. 6 is a schematic diagram of a fourth view angle of the laryngeal mask in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fifth viewing angle of the laryngeal mask in an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Cover body	144	Support convex rib
110	Body	145	Circulation hole
				120	Air bag	146	Petal-shaped surface
121	Buffer section	200	Connecting pipe
				130	Breathing chamber	210	Respiratory tract
131	Breathing opening	220	Digestive tract
				132	Boss	221	First half cavity channel
133	Limiting groove	222	Second half channel
				140	Digestion chamber	230	Concave part
141	Digestion opening	240	Spacing section
				142	Convex part	250	Inflation tube
143	Barrier rib	260	Accommodating tank

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments 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 "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or schemes in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a cover body, which is suitable for a laryngeal mask.

In the embodiment of the present invention, referring to fig. 1, the mask body 100 is connected to one end of the connecting tube 200 of the laryngeal mask, the mask body 100 includes a body 110 and an air bag 120, the body 110 has an insertion end and a connection end, which is far away from the insertion end, toward the front side of the respiratory tract, back to the rear side of the respiratory tract, and the throat portion is inserted first, and the connection end is connected to the connecting tube 200.

Referring to fig. 1, 2 and 4, the body 110 is provided with a breathing chamber 130 for communicating with a respiratory tract and a digestion chamber 140 for communicating with a digestive tract, the breathing chamber 130 is located at the front side, the digestion chamber 140 is located at the rear side, the front side is provided with a breathing opening 131 for communicating the breathing chamber 130 with the respiratory tract, during treatment, the connecting pipe 200 is connected with a breathing apparatus for providing breathing gas, and the breathing chamber 130 is provided with the breathing gas through the connecting pipe 200, so that spontaneous breathing of a patient can be realized during treatment.

The air bag 120 is annularly arranged on the edge of the breathing opening 131 to form a seal with the breathing orifice of the patient in the treatment process, so that the breathing gas can smoothly enter the respiratory tract of the patient, and other miscellaneous gases cannot enter the respiratory tract of the patient, so that the patient can feel more comfortable and safer; one side of gasbag 120 is fixed with the edge of breathing opening 131, the opposite side of gasbag 120 is at the extension direction skew of link orientation connecting pipe 200, so that gasbag 120 forms the acute angle with connecting pipe 200 at the position of link, because gasbag 120 forms the acute angle with connecting pipe 200 at the position of link, make gasbag 120 receive the extrusion, gasbag 120 takes place deformation under the effect of extrusion force, the link of gasbag 120 is close to connecting pipe 200, and make the contained angle that forms between gasbag 120 and connecting pipe 200 diminish, and when the extrusion force that gasbag 120 received diminishes, gasbag 120 resumes deformation and makes the contained angle that forms between gasbag 120 and connecting pipe 200 increase.

In this embodiment, when the laryngeal mask is inserted into the laryngeal portion of the patient, the air bag 120 forms a seal with the respiratory meatus of the patient, and the tissues of the respiratory meatus of the patient and the air bag 120 are squeezed with each other, so that on one hand, the air bag 120 can form a seal with the respiratory meatus of the patient under the action of the gas filled in the air bag, and the smooth proceeding of the treatment process is ensured; on the other hand, the air bag 120 can adjust the included angle between the air bag and the connecting pipe 200 more flexibly according to the mutual extrusion force between the tissues of the respiratory orifice of the patient and the air bag 120, so that the extrusion force applied to the tissues of the respiratory orifice of the patient can be kept in a preset range more stably, the extrusion of the laryngeal mask to the tissues of the patient is relieved, and the discomfort of the patient is reduced.

In addition, in this embodiment, since the air bag 120 has a characteristic that the included angle between the air bag 120 and the connection tube 200 can be adjusted according to the mutual pressing force between the tissues of the patient breathing orifice and the air bag 120, the obstruction of the air bag 120 to the insertion process is reduced in the process of inserting the laryngeal mask into the throat of the patient, so that the insertion process is smoother.

In one embodiment, the air bag 120 is tapered from the middle section to the connection end, and the air bag 120 forms an arc-shaped buffer section 121 at the connection end, so that when the mask body 100 leaves the throat of the patient, the reduced connection end contacts the throat outlet first, so that the air bag 120 can leave the throat more smoothly, and the arc-shaped buffer section 121 causes less compression and stimulation to the throat when the air bag 120 leaves the throat. And in the process that the air bag 120 leaves the throat part, the reduced connecting end leaves the outlet of the throat part firstly, the middle section of the air bag 120 is larger, and the air bag 120 becomes slender under the extrusion of the throat part, so that the air bag can more easily leave the throat part.

In an embodiment, one side of the buffering section 121 far from the body 110 is offset towards the extending direction of the connecting pipe 200, and an acute angle is formed between the buffering section 121 and the connecting pipe 200 at the connecting end, so that during the insertion process of the laryngeal mask, the buffering section 121 plays a buffering role, not only the sealing effect is maintained, but also the compression of the laryngeal mask on the tissues of a patient is relieved.

In one embodiment, the balloon 120 is annular and the shape of the balloon 120 is adapted to the shape of the breathing opening 131, and when the laryngeal mask is inserted into the throat of a patient, the balloon 120 is located between the breathing opening 131 and the breathing orifice of the patient and just covers the gap between the breathing opening 131 and the breathing orifice of the patient, so that the sealing effect is better.

In one embodiment, the smooth transition connection between the balloon 120 and the connecting tube 200 enables the inflated balloon 120 to be inserted more smoothly when the laryngeal mask is inserted into the throat of the patient, thereby reducing discomfort to the patient.

The utility model discloses still provide a laryngeal mask, this laryngeal mask includes connecting pipe 200 and the cover body 100, and the concrete structure of this cover body 100 refers to above-mentioned embodiment, because this laryngeal mask has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives details here. The connecting pipe 200 is provided with a respiratory tract 210 and a digestive tract 220, one end of the respiratory tract 210 is communicated with the respiratory cavity 130, the other end of the respiratory tract 210 is communicated with a breathing device for providing respiratory gas, one end of the digestive tract 220 is communicated with the digestive cavity 140, the other end of the digestive tract 220 is communicated with the external environment, and the breathing device inputs the respiratory gas to the respiratory tract through the connecting pipe 200, so that a patient can breathe autonomously in the treatment process.

In one embodiment, the digestive tract 220 comprises a first half-tract 221 and a second half-tract 222 which are both communicated with the digestive chamber 140, one side of the digestive chamber 140 and one side of the respiratory chamber 130 share a peripheral wall, the peripheral wall of the other opposite side of the digestive chamber 140 is provided with a circulation hole 145, and during treatment, respiratory gas enters the respiratory chamber 130 through the respiratory tract 210 to provide respiratory gas for the patient; the first half-cavity 221 is connected with a suction source, the second half-cavity 222 is connected with a positive pressure source or communicated with the atmosphere, or the second half-cavity 222 is connected with the suction source, the first half-cavity 221 is connected with the positive pressure source or communicated with the atmosphere, so that in the treatment process, waste liquid such as saliva, gastric juice, blood and the like generated by a patient firstly enters the digestion chamber 140 under the action of the suction source and then is discharged out of the body of the patient through the first half-cavity 221 or the second half-cavity 222 communicated with the digestion chamber 140, and discomfort of the patient caused by the fact that the waste liquid generated in the treatment process of the patient enters the air channel is effectively avoided.

In an embodiment, the first half channel 221, the second half channel 222 and the breathing channel 210 are parallel to each other, so that the thicknesses of the cavity wall of the first half channel 221, the cavity wall of the second half channel 222 and the cavity wall of the breathing channel 210 are uniform at each position in the length direction of the connecting pipe 200, and thus the connecting pipe 200 has a more stable structure and is not easy to break.

In an embodiment, the cross section of the connection tube 200 is oval, that is, the connection tube 200 is a flat tube, on the same cross section of the connection tube 200, the center of the respiratory tract 210 coincides with the center of the oval, the first tract and the second tract are symmetrically disposed on both sides of the respiratory tract 210, meanwhile, the mask body 100 is also flat, and the digestive opening 141 is also oval, that is, the shape of the digestive opening 141 is matched with the distribution positions of the first tract and the second tract, so that the waste liquid can be discharged more quickly.

In one embodiment, connecting tube 200 is curved from an end proximal to mask body 100 to an end distal to mask body 100, such that connecting tube 200 is more easily inserted into the patient's throat and provides less compressive force on the patient's throat.

In an embodiment, the air bag 120 is provided with the inflation tube 250, the outer side wall of the connection tube 200 is provided with a receiving groove 260 for receiving the inflation tube 250, and by receiving the inflation tube 250 in the receiving groove 260, the air bag 120 can be inflated to seal the air bag 120, and the inflation tube 250 can be prevented from interfering with the treatment process.

In an embodiment, the both sides edge of holding tank 260 is equipped with spacing arch, and the spacing protruding elastic clamping of the both sides of gas tube 250 and holding tank 260 makes gas tube 250 accomodate in holding tank 260 more steadily on the one hand, avoids gas tube 250 to hinder going on of treatment process, and on the other hand elastic clamping makes gas tube 250 difficult quilt damage to avoid the emergence of gas leakage problem better.

In one embodiment, the end of the inflation tube 250 connected to the airbag 120 is disposed at a side of the airbag 120 close to the body 110, so that the shortest distance between the connection of the inflation tube 250 and the airbag 120 and the receiving groove 260 is shorter, thereby allowing the inflation tube 250 to be more fully received in the receiving groove 260.

Referring to fig. 1 and 3, in an embodiment, the digestion chamber 140 is provided with a digestion opening 141 for communicating the digestion chamber 140 with the digestive tract, and the examination device may enter the digestive tract and examine the patient through the digestion chamber 140 and the digestion opening 141. The peripheral wall of the digestion chamber 140 is tapered from the end far away from the digestion opening 141 to the digestion opening 141, the edge of the digestion opening 141 is provided with a plurality of protrusions 142, and the protrusions 142 are mutually closed due to the surrounding extrusion force in the process of inserting the laryngeal mask into the throat part, so that the digestion opening 141 is shrunk. In this embodiment, when the laryngeal mask is inserted into the laryngeal portion of the patient, a mutual pressing force is generated between the laryngeal portion of the patient and the peripheral wall of the digestive lumen 140, and the plurality of protrusions 142 are mutually closed, so that the digestive opening 141 is reduced, and the digestive opening 141 can be better aligned with the digestive tract.

In an embodiment, the digestive opening 141 is in an oval shape, four protrusions 142 are provided, the four protrusions 142 are respectively provided at four vertex angles of the oval-shaped inner quadrilateral, when the laryngeal mask is inserted into the laryngeal portion of the patient, a mutual squeezing force is generated between the laryngeal portion of the patient and the peripheral wall of the digestive chamber 140, and the four protrusions 142 are closed towards the central direction of the oval, so that the digestive opening 141 is reduced, and the digestive opening 141 can be better aligned with the digestive tract. Moreover, the peripheral wall of the digestion chamber 140 is tapered from the end far away from the digestion opening 141 to the digestion opening 141, so that the four convex parts 142 are more easily closed towards the center direction of the ellipse, and the condition that the convex parts 142 are rolled up to cause unsmooth insertion in the process of inserting the laryngeal mask is better avoided.

In another embodiment, the digestive opening 141 is in the shape of a contour of a superimposed ellipse with two coincident centers, unequal long radii and unequal short radii, the two ellipses intersect at four points, the protrusions 142 are respectively arranged at the four points, when the laryngeal mask is inserted into the laryngeal part of the pharynx of the patient, a mutual squeezing force is generated between the laryngeal part of the pharynx of the patient and the circumferential wall of the digestive chamber 140, and the four protrusions 142 are closed towards the center direction of the ellipses, so that the digestive opening 141 is reduced, and the digestive opening 141 can be better aligned with the digestive tract.

In other embodiments, the shape of the digestive openings 141 and the number and location of the protrusions 142 may be adapted.

In one embodiment, the wall thickness of the peripheral wall of the digestive opening 141 is less than the wall thickness of the peripheral wall of the digestive chamber 140, so that the digestive opening 141 is more easily deformed and the opening is reduced during insertion, and smooth insertion of the laryngeal mask is facilitated.

In an embodiment, the inner sidewall of the digestion chamber 140 is provided with a blocking rib 143, when the digestion opening 141 is shrunk by a pressing force during the insertion process, the inner side of the circumferential wall of the digestion opening 141 may be attached together by the pressing force, while the laryngeal mask is generally made of a material with a smooth surface, and the inner side of the circumferential wall of the digestion opening 141 is difficult to separate by itself after being attached together by the pressing force, so that the digestion opening 141 may be closed or the digestion opening 141 may be changed after the laryngeal mask is inserted, thereby resulting in a poor treatment process.

In one embodiment, the blocking ribs 143 are disposed within the digestion chamber 140 proximate to the digestion opening 141. Because the peripheral wall of the digestion chamber 140 is tapered from the end far away from the digestion opening 141 to the digestion opening 141, the peripheral wall of the digestion opening 141 is more easily attached and sealed compared with the peripheral walls of other parts of the digestion chamber 140, and the blocking convex rib 143 is arranged at the position close to the digestion opening 141 in the digestion chamber 140, so that the blocking convex rib 143 can effectively function, and the probability that the digestion opening 141 is sealed after the laryngeal mask is inserted is further reduced.

Referring to fig. 5, in an embodiment, the inner sidewall of the digestion chamber 140 is provided with a supporting rib 144, so that the digestion chamber 140 can be better kept in a full and smooth state after the laryngeal mask is inserted, and the treatment process can be more smoothly performed.

In one embodiment, the supporting ribs 144 are distributed on the inner sidewall of the digestion chamber 140 in a corrugated shape, so that the inner sidewall of the digestion chamber 140 can be supported at all positions, the laryngeal mask can be kept in a full and smooth state better, the circumferential wall strength of the digestion chamber 140 can be increased, and the circumferential wall of the digestion chamber 140 is not easy to break.

In another embodiment, the support ribs 144 are scaled on the inner sidewalls of the digestion chamber 140 to provide more uniform support throughout the perimeter wall of the digestion chamber 140, thereby allowing the digestion chamber 140 to better maintain a predetermined shape.

Referring to fig. 6 and 7, in one embodiment, the end of the connection pipe 200 connected to the cover 100 is provided with a transition section, which has a recess 230 having an outer diameter smaller than that of the connection pipe 200, when the operator inserts the laryngeal mask into the throat of the patient, the connecting tube 200 and the throat of the patient are pressed against each other, the extrusion force at the epiglottis is larger, and the extrusion force of each section of the connecting pipe 200 with the same outer diameter to the epiglottis is kept stable in the previous stage of inserting the laryngeal mask, and, since the outer diameter of the recess 230 is smaller than that of the connection tube 200, when the recess 230 passes the epiglottis, the pressing force applied to the epiglottis is abruptly reduced, i.e., during insertion of the mask into the throat of a patient, the depression 230 creates a feeling of being lost when it passes the epiglottis, the operator can accurately know the inserted position of the laryngeal mask under the condition that the details of the laryngeal part cannot be seen, and the number of times of adjusting the inserted position is reduced.

In one embodiment, the transition section is smoothly tapered from one end of the connecting cover body 100 to form the recess 230 and then smoothly expands to an outer diameter equal to the outer diameter of the connecting tube 200, so that the insertion and removal process of the laryngeal cover is smoother while the falling-off feeling during the insertion process is maintained, and the discomfort caused to the patient is reduced.

In one embodiment, the outer side wall of the mask body 100 has a plurality of petals 146, adjacent petals 146 intersect, and the intersection line of the plurality of petals 146 serves as a positioning function on the outer surface of the mask body 100, so that the laryngeal mask cannot move freely after being inserted into the throat of a patient, and the treatment process is more stable; and the intersecting line between the adjacent petal-shaped surfaces 146 smoothly extends from one end of the cover body 100 close to the connecting pipe 200 to one end of the cover body 100 far away from the connecting pipe 200, namely the extending direction of the intersecting line between the adjacent petal-shaped surfaces 146 is in reverse accordance with the insertion of the laryngeal mask, so that the petal-shaped surfaces 146 can not only make the laryngeal mask move randomly, but also do not hinder the laryngeal mask insertion.

It will be appreciated that in this embodiment, the intersections of adjacent lobe surfaces 146 are provided as rounded ridge-like structures, rather than as knife-edge structures.

In one embodiment, the rear side is arched, a boss 132 is arranged in the breathing cavity 130, the boss 132 is located on the shared side wall of the breathing cavity 130 and the digestion cavity 140, the boss 132 is provided with an inclined surface facing the breathing cavity 210 and the breathing opening 131, so that when the laryngeal mask is inserted into the laryngeal part of a patient, the mask body 100 deforms under the action of extrusion force of the laryngeal part, one end of the mask body 100, which is inserted into the laryngeal part first, is closed to the arched concave part, the shape of the breathing opening 131 is changed, and meanwhile, the boss 132 is driven to be close to the plane where the breathing opening 131 is located, so that the mask body 100 is more attached to the opening of the respiratory tract, the dead air cavity is reduced, and fresh air circulation; and the setting of boss 132 makes during the treatment, when operating personnel inserted the respiratory track with the inspection device through breathing cavity 130, the inclined plane of boss 132 can play the guide effect to the inspection device, makes the inspection device can insert the respiratory track more accurately, reduces the probability that the inspection device stabbed the respiratory track wall.

In an embodiment, the side of the boss 132 close to the respiratory tract 210 is smoothly transited to the side wall shared by the respiratory tract 130 and the digestive tract 140, so that the boss 132 can guide the inserted examination device and the examination device can more smoothly pass through the joint of the boss 132 and the side wall of the respiratory tract 210, thereby facilitating the insertion of the examination device.

In one embodiment, the edge of the boss 132 away from the respiratory tract 210 is rounded. When the boss 132 is driven by the deformed cover body 100 to approach the plane where the breathing opening 131 is located, the boss 132 may contact with the throat, and when the boss 132 contacts with the throat, the rounded angle arranged at the edge of the boss 132 reduces the stimulation of the boss 132 to the throat, thereby reducing the discomfort of the laryngeal mask to the patient.

In one embodiment, the boss 132 is provided with a limiting groove 133 extending from the respiratory tract 210 to the respiratory opening 131, when the inspection device is inserted from the respiratory tract 210, the limiting groove 133 can guide and limit the inspection device, so that the inspection device can be inserted into a desired position more accurately, and the inspection device is not easy to move randomly after being inserted, thereby the treatment process is smoother.

In an embodiment, the boss 132 is provided with a plurality of spacing grooves 133 at intervals, so that the insertion position of the inspection device has more choices, and an operator can select different spacing grooves 133 according to actual requirements.

In an embodiment, the cross section of the limiting groove 133 is arc-shaped, and since the inspection device generally comprises a cylindrical tubular structure, the limiting groove 133 with the arc-shaped cross section can be more attached to the inspection device, so that the guiding and limiting effects of the limiting groove 133 on the inspection device are better.

In an embodiment, a position-limiting section 240 is disposed at an end of the connecting tube 200 away from the cover 100, and an outer diameter of the position-limiting section 240 is greater than an outer diameter of the connecting tube 200. After the laryngeal mask is inserted into the throat of a patient, in order to make the treatment process more smoothly, the end of the laryngeal mask connecting tube 200 is usually fixed near the lips of the patient by using an adhesive tape, and the outer diameter of the limiting section 240 is larger than the outer diameter of the connecting tube 200, so that the joint of the limiting section 240 and the connecting tube 200 forms a concave structure, thereby facilitating the winding of the adhesive tape and making the adhesive tape not easy to loosen.

In one embodiment, the spacing segment 240 and the connecting tube 200 are smoothly transited, so as to better fit with the adhesive tape.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A mask body for attachment to an end of a connecting tube of a laryngeal mask, the mask body comprising:

the body is provided with a front side facing the respiratory tract, a rear side facing away from the respiratory tract, an insertion end inserted into the throat part firstly and a connecting end far away from the insertion end, the connecting end is connected with the connecting pipe, the body is provided with a breathing cavity communicated with the respiratory tract and a digestive cavity communicated with the digestive tract, the breathing cavity is positioned at the front side, the digestive cavity is positioned at the rear side, and the front side is provided with a breathing opening used for communicating the breathing cavity with the respiratory tract; and the number of the first and second groups,

the air bag is annularly arranged on the edge of the breathing opening so as to form sealing with the breathing opening of a patient in the treatment process, one side of the air bag is fixed with the edge of the breathing opening, and the other side of the air bag is offset towards the extending direction of the connecting pipe at the connecting end, so that the part of the air bag at the connecting end and the connecting pipe form an acute angle.

2. The cover of claim 1, wherein the bladder tapers from a self-centering end to the attachment end, and the bladder forms an arcuate cushion section at the attachment end.

3. The cover according to claim 2, wherein a side of the buffer section remote from the body is offset towards the extension of the connection tube, such that the buffer section forms an acute angle with the connection tube at the location of the connection end.

4. The mask body of claim 1 wherein said balloon is annular in shape to fit the shape of said breathing opening.

5. The cover according to claim 1, wherein the balloon is smoothly connected to the connection tube.

6. A laryngeal mask comprising a mask body according to any one of claims 1-5 and a connecting tube, the connecting tube being provided with a respiratory tract and a digestive tract, one end of the respiratory tract communicating with the respiratory chamber and the other end of the respiratory tract communicating with a breathing apparatus for providing respiratory gases, one end of the digestive tract communicating with the digestive chamber and the other end of the digestive tract communicating with the environment.

7. The laryngeal mask of claim 6, wherein the digestive tract comprises a first half tract and a second half tract both in communication with the digestive chamber, one side of the digestive chamber sharing a perimeter wall with one side of the respiratory chamber, the opposite side perimeter wall of the digestive chamber having circulation holes.

8. The laryngeal mask of claim 6, wherein an inflation tube is arranged on the air bag, and a receiving groove for receiving the inflation tube is arranged on an outer side wall of the connecting tube.

9. The laryngeal mask of claim 8, wherein the two side edges of the accommodating groove are provided with limiting protrusions, and the inflation tube is elastically clamped with the limiting protrusions on the two sides of the accommodating groove.

10. The laryngeal mask of claim 8, wherein the end of the inflation tube connected to the balloon is located on a side of the balloon adjacent to the body.