CN111905212A - laryngeal mask - Google Patents

Abstract

The invention discloses a laryngeal mask, comprising a tube body and a mask body, the tube body has a tube connection end, the tube body is provided with a digestive cavity for circulating waste liquid generated during implantation and ventilation, and the mask body has opposite The connecting end of the cover and the implanting end of the cover, the connecting end of the cover and the connecting end of the tube are sealed and connected, and the cover body is provided with a digestive chamber communicating with the digestive cavity; the cover body also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber is provided with a digestive port for communicating between the digestive chamber and the digestive tract, and the digestive port is set close to the implant end of the cover; the mouth wall of the digestive port is retracted in the direction of the connecting end at the rear side, and the mouth wall of the digestive port is on the front side Protrudes forward in the direction away from the connection end. The technical solution of the present invention can solve the problem that when the laryngeal mask is implanted into the larynx, the peripheral side walls of the opening are easily fitted to each other due to the surrounding squeezing force during the implantation process, thereby causing the opening to be blocked and hindering the ventilation of the laryngeal mask.

Description

laryngeal mask

technical field

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

Background technique

A laryngeal mask is an artificial airway device that allows the patient to breathe spontaneously and to perform positive pressure ventilation during surgery. The current laryngeal mask usually includes a mask body and a tube body. One end of the mask body away from the tube body is provided with an opening for communicating with the digestive tract. When the laryngeal mask is used, it is necessary to implant the laryngeal mask into the larynx of the patient and align the opening to the digestive tract. During the implantation process, the peripheral side walls of the opening are likely to fit each other due to the surrounding extrusion force, thereby causing the opening to be blocked and hindering the ventilation after the laryngeal mask is implanted.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a laryngeal mask, which aims to solve the problem that when the laryngeal mask is implanted into the larynx, the peripheral side walls of the opening are easily fitted to each other due to the surrounding squeezing force during the implantation process, thereby causing the opening to be blocked and hindering the Laryngeal mask ventilation problems.

In order to achieve the above purpose, the laryngeal mask proposed by the present invention includes: a tube body with a tube connection end, and the tube body is provided with a digestive tract for circulating the waste liquid generated by implant ventilation; and, the mask The cover body has an opposite cover connecting end and a cover implanting end, the cover connecting end is sealingly connected with the tube connecting end, and the cover body is provided with a digestive chamber communicating with the digestive tract; the cover body It also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract, the digestive chamber is provided with a digestive port for the digestive chamber to communicate with the digestive tract, and the digestive port is arranged near the implant end of the cover; The mouth wall of the digestive stomata is retracted in the direction of the rear side toward the connection end, and/or the mouth wall of the digestive stomata is protruded forward in the direction away from the connection end on the front side.

Optionally, the outer diameter of the cover body is firstly expanded and then tapered from the cover connection end to the cover implantation end.

Optionally, the outer surface of the implanted end of the shield is provided as a convex arc surface.

Optionally, the edge of the digestive mouth is provided with a plurality of convex parts, and during the process of implanting the laryngeal mask into the larynx, the plurality of the convex parts are close to each other due to the surrounding squeezing force, so that the digestion can be performed. The mouth narrows.

Optionally, the digestive opening is arranged in a flat shape.

Optionally, the digestive opening is arranged in an oval shape.

Optionally, a plurality of the protrusions are respectively provided on the front side and the rear side.

Optionally, the extension direction of the protruding portion located on the front side and the extending direction of the protruding portion located on the rear side intersect at a point within the range of the digestive tract.

Optionally, there are four protruding parts, and the four protruding parts are respectively provided at the four vertex corners of the elliptical inscribed quadrilateral.

Optionally, the peripheral wall thickness of the digestive opening is smaller than the cavity wall thickness of the digestive chamber.

The technical solution of the present invention is to use a digestive cavity on the tube body for the circulation of the waste liquid generated during the implantation ventilation process, a digestive cavity connected with the digestive cavity on the cover body, and a digestive port, so that the laryngeal mask can be When implanted into the larynx of the patient, the digestive chamber is communicated with the digestive tract of the patient, and the digestive opening is arranged close to the implanted end of the mask, and the mouth wall of the digestive The mouth wall protrudes forward in the direction away from the connecting end on the front side, so that the mouth wall of the digestive orifice is dislocated on the front side and the back side, that is, the length of the front wall of the digestive orifice and the length of the back wall are different, and the implantation of the laryngeal mask is completed. Afterwards, the squeezing force around the implanted end of the mask decreases or disappears, the air can quickly enter the gap between the anterior and posterior sidewalls, and separate the anterior and posterior sidewalls, so that the digestive orifice can be restored to its original state. shape, to avoid the blockage of the digestive opening caused by the anterior and posterior sidewalls always fitting together. Moreover, when the mouth wall of the digestive stomach protrudes forward in the direction that the front side faces away from the connecting end, the length of the front side wall of the digestive stomach is greater than the length of the rear side wall, so as to ensure that the front side wall can effectively seal and abut the alimentary canal mouth. , in order to avoid the blockage of the digestive mouth while ensuring the sealing effect of the laryngeal mask after implantation, so that the ventilation process after the implantation of the laryngeal mask can be carried out smoothly.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of an embodiment of a laryngeal mask of the present invention;

Fig. 2 is the structural representation of the laryngeal mask from another perspective in Fig. 1;

3 is a schematic structural diagram of the laryngeal mask in the direction from the mask body to the tube body in FIG. 1;

Figure 4 is a right side view of the laryngeal mask in Figure 1;

Figure 5 is a front view of the laryngeal mask in Figure 1;

Figure 6 is a rear view of the laryngeal mask in Figure 1;

FIG. 7 is a schematic diagram of a cross-sectional structure along the direction A-A in FIG. 6 .

Description of reference numbers:

label name label name 100 body 212 Limit slot 101 pipe connection 220 breathing port 102 free end of tube 221 airbag 103 hand grip 230 digestive chamber 110 airway 231 first subchamber 120 digestive tract 232 second subchamber 121 first sub-channel 240 digestive tract 122 second sub-channel 241 convex 200 cover 242 Reinforcing ribs 201 cover connection 250 Circulation port 202 hood implant end 251 first mouth 210 breathing chamber 252 the second port 211 boss

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for the purpose of description, and should not be construed as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, if the meaning of "and/or" appears in the whole text, it includes three parallel schemes, taking "A and/or B" as an example, including scheme A, or scheme B, or the scheme that A and B satisfy at the same time . In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The present invention provides a laryngeal mask.

In an embodiment of the present invention, as shown in FIG. 1 and FIG. 2 , the laryngeal mask includes a tube body 100 and a mask body 200 . The tube body 100 has a tube connection end 101 , the shield body 200 has opposite shield connection ends 201 and shield implantation ends 202 , and the shield connection end 201 is sealedly connected with the tube connection end 101 . The tube body 100 is provided with a digestive cavity 120 , which is used for the circulation of waste liquid generated during the implantation and ventilation process. The mask body 200 also 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. When the laryngeal mask is implanted in the patient's throat, the digestive chamber 230 and the patient's digestive tract pass through the digestive port. 240 is connected, and the digestive port 240 is disposed close to the mask implantation end 202, the mouth wall of the digestive port 240 is retracted in the direction of the connection end at the back side, and/or the mouth wall of the digestive port 240 is facing away from the direction of the connection end at the front side lordosis.

The technical solution of the present invention adopts a digestive cavity 120 on the tube body 100 for the circulation of the waste liquid generated during the implantation ventilation process, a digestive cavity 230 communicated with the digestive cavity 120 on the cover body 200, and a digestion cavity 230 is arranged on the cover body 200. mouth 240, when the laryngeal mask is implanted into the patient's throat, the digestive chamber 230 is communicated with the patient's digestive tract; Retraction, and/or, the mouth wall of the digestive stomach 240 is forward convex in the direction away from the connecting end on the front side, so that the mouth wall of the digestive ostium 240 is dislocated on the front side and the rear side, that is, the length of the anterior side wall of the digestive ostium 240 and The length of the posterior sidewall is different. After the implantation of the laryngeal mask is completed, the pressing force around the implanted end 202 of the mask decreases or disappears, and the air can quickly enter the gap between the anterior and posterior sidewalls and make the anterior The wall and the rear side wall are separated to restore the original shape of the digestive ostium 240, so as to avoid clogging of the digestive orifice 240 due to the anterior and rear side walls being always abutting together. In addition, when the mouth wall of the digestive stomach 240 protrudes forward in the direction that the front side faces away from the connecting end, the length of the front side wall of the alimentary orifice 240 is greater than the length of the rear side wall, so as to ensure that the front side wall can effectively seal the alimentary canal orifice. Abutting, so as to prevent the clogging of the digestive opening 240 and at the same time ensure the sealing effect after the laryngeal mask is implanted, so that the ventilation process after the laryngeal mask is implanted can be smoothly performed.

In one embodiment, the outer diameter of the cover body 200 from the cover connecting end 201 to the cover implanting end 202 is firstly expanded and then tapered, that is, the size of the cover implanted end 202 is smaller, and the size of the middle of the cover body 200 is relatively The size of the shield implantation end 202 gradually increases, and the size of the shield connection end 201 gradually decreases relative to the size of the middle of the shield body 200 . During the process of implanting the laryngeal mask into the larynx of the patient, the implanted end 202 of the mask first reaches the larynx of the patient, and the size of the implanted end 202 is small, so that the implanted end 202 can easily enter the larynx. larger, which can better ensure the sealing between the laryngeal mask and the larynx; when the implantation of the laryngeal mask is completed, the mask body 200 is located in the supraglottic region with a large space, and the junction of the mask body 200 and the tube body 100 It is located in the part where the size of the larynx is small. At this time, due to the small size of the connecting end 201 of the mask, it squeezes the part with the small size of the larynx less, so as to avoid the damage of the laryngeal tissue caused by the large squeeze of the laryngeal mask on the larynx. .

In one embodiment, the outer surface of the shield implantation end 202 is provided with a convex arc surface. By setting the outer surface of the mask implantation end 202 as a convex arc surface, the process of entering the mask implantation end 202 into the larynx is smoother.

2 , 3 and 4 , in one embodiment, a plurality of protrusions 241 are provided on the edge of the digestive orifice 240 . During the process of implanting the laryngeal mask into the larynx, the plurality of protrusions 241 are compressed due to surrounding compression. The forces move toward each other to shrink the digestive tract 240 . During the process of implanting the laryngeal mask into the larynx of the patient, a mutual pressing force is generated between the larynx of the patient and the side wall of the laryngeal mask, and the plurality of convex parts 241 are brought closer to each other, so that the digestive opening 240 is reduced, so as to facilitate digestion The mouth 240 can be better aligned with the patient's digestive tract, which is convenient for implantation. When the edge of the peripheral wall of the digestive chamber 230 enters the digestive canal orifice, the digestive orifice 240 expands until the peripheral wall of the digestive chamber 230 forms a seal with the inner wall of the digestive canal orifice. , so as to effectively isolate the respiratory tract and digestive tract, without the need to repeatedly adjust the insertion position and reduce the operation time.

In one embodiment, the digestive opening 240 is arranged in a flat shape. During the process of implanting the laryngeal mask into the larynx of the patient, the flat digestive opening 240 is more easily compressed, so that the implantation end 202 of the mask is reduced, making the implantation of the laryngeal mask more convenient, and when the implantation of the laryngeal mask is completed, The implanted end 202 of the mask is located in the supraglottic region with a larger space, and the digestive stomata 240 can automatically recover when the squeezing force decreases or disappears.

In one embodiment, the digestive ostium 240 is oval-shaped. Setting the digestive orifice 240 into an oval shape not only satisfies the requirement that the digestive orifice 240 is flat and facilitates the implantation of a laryngeal mask, but also makes the digestive orifice 240 compressed due to the squeezing force. The gap is close to a circle, so as to avoid the perimeter of the digestive opening 240 being completely fitted in the compressed state, which will cause the digestive opening 240 to be blocked.

In one embodiment, the plurality of protrusions 241 are respectively disposed on the front side and the rear side. The plurality of protruding parts 241 are respectively arranged on the front side and the rear side, so that during the implantation of the laryngeal mask, the protruding parts 241 on the front side and the rear side are close to each other at the same time, so that the digestive orifice 240 is convergently reduced toward the middle of the original digestive orifice 240. , thereby facilitating the implantation of the laryngeal mask.

In one embodiment, the extending direction of the protruding portion 241 located on the front side and the extending direction of the protruding portion 241 located on the rear side intersect at a point within the range of the digestive opening 240 . In the process of laryngeal mask implantation, each convex part 241 converges toward a point within the range of the digestive opening 240, so that the digestive opening 240 converges and shrinks toward a point within the original digestive range, which is more convenient for laryngeal mask implantation.

In one embodiment, there are four protruding portions 241 , and the four protruding portions 241 are respectively provided at the four vertex corners of the elliptical inscribed quadrilateral. When the laryngeal mask is implanted into the larynx of the patient, a mutual pressing force is generated between the larynx of the patient and the peripheral wall of the digestive chamber 230, and the four convex portions 241 move toward the center of the digestive stomach 240, so that the digestive stomach 240 is reduced, Therefore, the digestive opening 240 can be better aligned with the digestive tract. And because the peripheral wall of the digestive chamber 230 is tapered from the end away from the digestive mouth 240 to the digestive mouth 240, the four convex parts 241 are more likely to move closer to the center of the ellipse, thereby avoiding the convex parts during the implantation of the laryngeal mask. 241 Rolling over resulted in a situation where the insertion was not smooth.

In another embodiment, the shape of the digestive opening 240 is the shape of the contour after the superposition of two ellipses whose centers are coincident, and whose long radii are not equal, and whose short radii are not equal, and these two ellipses intersect at four points, the convex part 241 They are respectively arranged at the four points. When the laryngeal mask is implanted into the larynx of the patient, a mutual pressing force is generated between the larynx of the patient and the peripheral wall of the digestive chamber 230, and the four convex portions 241 are drawn toward the center of the ellipse. The digestive opening 240 is reduced, so that the digestive opening 240 can be better aligned with the digestive tract.

In other embodiments, the shape of the digestive opening 240 and the number and position of the protrusions 241 can be adaptively adjusted.

In one embodiment, the peripheral wall thickness of the digestive opening 240 is smaller than the wall thickness of the digestive chamber 230, so that the digestive opening 240 is more easily deformed and the opening is narrowed during the implantation process, which is more convenient for laryngeal mask implantation.

In one embodiment, the inner sidewall of the digestive chamber 230 is provided with a blocking rib. When the digestive orifice 240 is shrunk due to the extrusion force during the implantation process, the inner side of the peripheral wall of the digestive orifice 240 may stick to the inner side of the digestive orifice 240 due to the extrusion force. Together, the laryngeal mask is usually made of a material with a smooth surface, and the inner side of the mouth wall of the digestive stomata 240 is difficult to separate after being pressed together due to the extrusion force. The implant ventilation process went smoothly.

In one embodiment, the blocking rib is disposed in the digestion chamber 230 at a position close to the digestion port 240 . Since the peripheral wall of the digestive chamber 230 is tapered from the end away from the digestive port 240 to the digestive port 240 , the oral wall of the digestive port 240 is more likely to be fitted and closed than the peripheral walls of other parts of the digestive chamber 230 Therefore, disposing the blocking ribs in the digestive chamber 230 close to the digestive ostium 240 enables the blocking ribs to function more effectively, and further reduces the probability of the digestive orifice 240 being blocked after the laryngeal mask is implanted.

2 and FIG. 5, in one embodiment, the breathing port 220 is provided on the front side, the rear side of the laryngeal mask is arcuate, and the breathing chamber 210 is provided with a boss 211, and the boss 211 has a direction facing the breathing cavity 110 and the breathing chamber. The inclined surface of the mouth 220 makes the mask body 200 deform under the action of the squeezing force of the throat when the laryngeal mask is implanted into the throat of the patient, and makes the end of the mask body 200 inserted into the throat to move closer to the arcuate inner recess, The shape of the breathing port 220 is changed, and at the same time, the boss 211 is driven to approach the plane where the breathing port 220 is located, so that the cover body 200 fits better with the opening of the respiratory tract, reduces air dead space, and is conducive to the circulation of fresh air; and the boss 211 The setting of the device makes it possible for the operator to insert the inspection device into the respiratory tract through the breathing chamber 210 during the implantation ventilation process. The probability of the device poking into the wall of the airway.

In one embodiment, the boss 211 and the side wall of the breathing chamber 210 smoothly transition, so that while the boss 211 guides the inserted inspection device, the inspection device can pass through the boss 211 and the breathing cavity more smoothly. 110 at the junction of the side wall, so that the insertion of the inspection device is smoother.

In one embodiment, a side edge of the boss 211 away from the breathing cavity 110 is provided with a rounded corner. When the boss 211 is driven by the deformed mask body 200 to approach the plane where the breathing port 220 is located, the boss 211 may be in contact with the throat. When the upper part is in contact, the stimulation of the larynx by the boss 211 is reduced, thereby reducing the discomfort caused by the three-lumen flushable fish-mouth laryngeal mask airway tube to the patient.

In one embodiment, the boss 211 is provided with a limiting groove 212 extending from the respiratory tract 110 to the breathing port 220 . When the inspection device is inserted from the respiratory tract 110 , the limiting groove 212 can guide the inspection device. The inspection device can be inserted into the required position more accurately, and the inspection device is not easy to move at will after insertion, so that the implantation ventilation process is smoother.

In one embodiment, the boss 211 is provided with a plurality of limit slots 212 at intervals, so that there are more choices for the positions where the inspection device is inserted, so that the operator can select different limit slots 212 according to actual needs.

In one embodiment, the cross-section of the limiting slot 212 is arc-shaped. Since the inspection device generally includes a cylindrical tubular structure, the limiting slot 212 with an arc-shaped cross-section can better fit the inspection device, so that the limiting slot 212 It is better for the guide limit of the inspection device.

2 , 6 and 7 , in one embodiment, the tube body 100 has an digestive tract 120 , the cover body 200 has an digestive chamber 230 that communicates with the digestive tract 120 , and the digestive chamber 230 has a digestive tract that communicates with the digestive tract. The digestion port 240; the digestion chamber 230 includes a first sub-chamber 231 and a second sub-chamber 232, and a communication channel is provided between the first sub-chamber 231 and the second sub-chamber 232; The side wall is provided with a circulation port 250 for the waste liquid generated during implantation and ventilation to enter the digestion chamber 230; It communicates with the first sub-chamber 231, the second sub-chamber 122 communicates with the second sub-chamber 232, and the first sub-chamber 121 is used for the cleaning material to enter the digestion chamber 230, so as to dissipate the waste generated during the implantation ventilation process. The waste fluid is flushed into the second sub-channel 122 through the communication channel, and is discharged out of the patient's body. That is, 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 can be understood that, in this embodiment, the tube body 100 further has a breathing cavity 110, the cover body 200 further has a breathing chamber 210 that communicates with the breathing cavity 110, and the breathing chamber 210 has a breathing port 220 that communicates with the respiratory tract. . During the implantation and ventilation of the laryngeal mask, the breathing gas enters the breathing chamber 210 through the breathing cavity 110, so as to provide the patient with breathing gas and ensure that the patient can breathe normally during the implantation ventilation; the first sub-cavity 121 is connected to the suction source and connect the second sub-channel 122 to a positive pressure source or to the atmosphere, or connect the second sub-channel 122 to a suction source and connect the first sub-channel 121 to a positive pressure source or to the atmosphere Therefore, during the implantation ventilation process, waste liquids such as saliva, gastric juice and blood generated by the patient first enter the digestive chamber 230 through the circulation port 250 or the digestive port 240 under the action of the suction source, and then pass through the digestive chamber 230. The connected first sub-cavity 121 or the second sub-cavity 122 is discharged out of the patient's body, thereby effectively preventing the waste liquid generated during the patient's implantation ventilation from entering the respiratory tract and causing the patient's discomfort.

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 provided in the first sub-chamber 231 , and the second sub-port 252 is provided in the second sub-chamber 232 . By 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, respectively, the waste liquid enters the digestion chamber 230 during the cycle of waste liquid generated during the implant ventilation process. Channels are increased to more promptly drain the effluent from the implant ventilation process out of the patient's body.

In one embodiment, the first sub-channel 121 , the second sub-channel 122 and the breathing channel 110 are arranged in parallel with each other, so that the cavity wall of the first sub-channel 121 , the cavity wall of the second sub-channel 122 and the breathing channel The cavity wall of the cavity 110 has a uniform thickness throughout the length direction of the tube body 100 , so that the structure of the tube body 100 is more stable and not easily broken.

In one embodiment, the cross section of the tube body 100 is oval, that is, the tube body 100 is a flat tube. On the same cross section of the tube body 100 , the center of the respiratory cavity 110 coincides with the center of the ellipse, and the first sub-cavity 121 and the second sub-cavity 122 are symmetrically arranged on both sides of the respiratory cavity 110. At the same time, the cover body 200 is also flat, and the digestive opening 240 is also elliptical, that is, the shape of the digestive opening 240 is the same as that of the first cavity. It is adapted to the distribution position of the second channel, so that the waste liquid can be discharged more quickly.

7, in an embodiment of the present invention, the laryngeal mask includes a tube body 100 and a mask body 200, the tube body 100 has a tube connecting end 101, the mask body 200 has a mask connecting end 201, and the mask connecting end 201 is connected to the tube connecting end 101 sealed connection. The tube body 100 is provided with a breathing cavity 110, and the breathing cavity 110 is used for the circulation of breathing gas. The cover body 200 is provided with a breathing cavity 210 that communicates with the breathing cavity 110, and is provided with a breathing port 220. When the laryngeal mask is implanted When the patient is in the larynx, the airway 110 communicates with the patient's airway through the breathing port 220 . The peripheral ring of the breathing port 220 is provided with an air bag 221, and the air bag 221 is used for sealing contact with the patient's airway port when the laryngeal mask is implanted into the patient's throat. The airbag 221 shrinks according to the outline of the inflated state of the airbag 221 .

In the technical solution of the present invention, a breathing cavity 110 is arranged on the tube body 100, and the breathing cavity 110 is used for the circulation of breathing gas. A breathing port 220 is provided on the upper part. When the laryngeal mask is implanted in the larynx of the patient, the breathing port 220 is used for the communication between the breathing chamber 210 and the patient's airway, and the patient air bag 221 on the periphery of the breathing port 220 is sealed against the patient's airway port by using the air bag 221. In order to ensure the sealing between the laryngeal mask and the larynx, a guide assembly is arranged on the air bag 221, and the guide assembly is used to guide the air bag 221 to shrink according to the outline of the inflated state of the air bag 221 when the air bag 221 is deflated, so that the air bag 221 is deflated. The shape after inflation is the same or similar to the shape after inflation, so as to avoid serious deformation of the airbag 221 after being deflated and affecting the implantation of the laryngeal mask.

In one embodiment, the guide assembly includes a plurality of guide parts arranged along the ring arrangement direction of the airbag 221 , and each guide part maintains the same shape during the inflation process of the airbag 221 and during the inflation process, so that the airbag 221 is deflated. During the process, the shape of the airbag 221 can be kept unchanged or the shape change is small under the action of the guiding part, and the outer wall surface of the airbag 221 can be kept flat, so as to avoid the serious shape change after the airbag 221 is deflated, which may lead to inconvenient implantation of the laryngeal mask. .

In one embodiment, the guide portion is embedded in the bag wall of the air bag 221 , so that the guide portion guides the air bag 221 to maintain the original shape during the deflation process while avoiding damage to the tissue of the patient's throat by the guide portion.

In one embodiment, the guide portion is provided on the inner wall surface of the airbag 221 , so that the guide portion guides the airbag 221 to maintain the original shape during the deflation process, while avoiding damage to the tissue of the patient's throat caused by the guide portion.

In one embodiment, the guide portion is a reinforcing rib 242 disposed on the inner wall surface of the airbag 221 . By arranging the reinforcing ribs 242 on the inner wall surface of the airbag 221, the structural strength of the airbag 221 at the reinforcing ribs 242 is enhanced, so that when the airbag 221 is deflated and deformed, the deformation degree of the reinforcing protrusions is higher than that of the airbag 221. Therefore, the air bag 221 can better maintain the shape of the inflated state, so as to facilitate the implantation of the laryngeal mask, and also enable the air bag 221 to return to the original shape more quickly and smoothly after inflation. Moreover, since the reinforcing ribs 242 are arranged on the inner wall surface of the airbag 221, the reinforcing ribs 242 can enhance the structural strength of the bag wall of the airbag 221, and at the same time, they will not directly contact the tissue of the larynx of the patient. cause damage.

In some embodiments, the reinforcing ribs 242 are arranged in an arc shape, and two adjacent reinforcing ribs 242 intersect at least at one point. The reinforcing ribs 242 are arranged in an arc shape, and two adjacent reinforcing ribs 242 intersect at least at one point, so that during the inflation process, all parts of the airbag 221 can be maintained in a flat state under the guidance and pulling of the reinforcing ribs 242 , thereby facilitating the implantation of the laryngeal mask.

In one embodiment, the reinforcing ribs 242 are arranged in an arc shape, and the reinforcing ribs 242 are combined on the inner wall surface of the airbag 221 to form a fish-scale shape. All parts of the rib can be maintained in a flat state under the guidance and pulling of the reinforcing ribs 242, so as to facilitate the implantation of the laryngeal mask.

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

In the above-mentioned embodiment, the tube body 100 also has a tube free end 102 opposite to the tube connection end 101 , and the tube free end 102 is provided with a hand-held handle 103 , so as to facilitate the operator to hold the tube free end 102 for implantation, removal and adjustment and so on. For example, lugs are provided on both sides of the free end 102 of the tube to form a handle 103, so that the outer diameter of the handle 103 is larger than the outer diameter of the rest of the tube body 100. When the laryngeal mask is implanted into the throat of the patient, in order to To make the implantation and ventilation process more smoothly, the free end of the tube body 100 is usually fixed near the patient's lips with tape, and the outer diameter of the hand-held lug 103 is larger than the outer diameter of the rest of the tube body 100 so that the hand-held lug 103 is connected to the tube. The connection part of the body 100 forms a concave structure, so that it is more convenient to wrap the tape, so that the tape is not easily loosened. In one embodiment, there is a smooth transition between the handle 103 and the tube body 100, so as to better fit the tape.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, any equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect Applications in other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A laryngeal mask, comprising:

the tube body is provided with a tube connecting end and is provided with a digestive tract for circulation of waste liquid generated by implantation ventilation; and the number of the first and second groups,

the mask body is provided with a mask connecting end and a mask implanting end which are opposite, the mask connecting end is connected with the pipe connecting end in a sealing way, and the mask body is provided with a digestion chamber communicated with the digestion chamber; the mask body is also provided with a front side facing the respiratory tract and a rear side back to the respiratory tract, the digestion chamber is provided with a digestion port for communicating the digestion chamber with the digestive tract, and the digestion port is arranged close to the implanting end of the mask;

the mouth wall of the digestion opening is retracted towards the connecting end at the rear side, and/or the mouth wall of the digestion opening is protruded forwards at the front side in the direction back to the connecting end.

2. The laryngeal mask of claim 1, wherein the outer diameter of the mask body tapers from the mask connection end to the mask insertion end.

3. The laryngeal mask of claim 2, wherein the outer surface of the implant end of the mask is convexly curved.

4. The laryngeal mask of claim 2, wherein the margin of the alimentary canal is provided with a plurality of protrusions, the plurality of protrusions moving towards each other due to a compressive force around the protrusions during implantation of the laryngeal mask in the larynx to cause the alimentary canal to constrict.

5. The laryngeal mask according to claim 4, characterised in that the digestive orifice is arranged flat.

6. The laryngeal mask according to claim 5, characterised in that the digestive orifice is elliptically shaped.

7. The laryngeal mask of claim 6, wherein a plurality of the protuberances are provided on the anterior side and the posterior side, respectively.

8. The laryngeal mask of claim 7, wherein the direction of extension of the tab on the anterior side intersects the direction of extension of the tab on the posterior side at a point within the range of the ostium.

9. The laryngeal mask of claim 7, wherein there are four of the protuberances, four of the protuberances being located at the four vertices of an elliptical inscribed quadrilateral.

10. A laryngeal mask according to any one of claims 1-9, characterised in that the peripheral wall thickness of the digestion orifice is smaller than the wall thickness of the cavity wall of the digestion chamber.

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