CN211675775U - Double-cuff laryngeal mask with epiglottis groove and changeable length of ventilation tube - Google Patents

Abstract

The utility model relates to a double-cuff laryngeal mask with epiglottis grooves and changeable length of a vent pipe, which is characterized in that the laryngeal mask comprises an inner cuff, an outer cuff, a mask opening, a mask body, a vent pipe, a telescopic pipe, an inner cuff inflation valve and an outer cuff inflation valve; the internal cuff is arranged on the bottom surface of the cover body; the outer cuff is sleeved on the periphery of the inner cuff; the cover body is of a structure with a certain length and a top end and a wide bottom, and an epiglottis groove is formed inside the cover body; the telescopic pipe is arranged at the tail end of the vent pipe; the inner cuff inflation valve is connected with the inner cuff through an inner cuff inflation tube; the external cuff inflation valve is connected with the external cuff through an external inflation tube. Its advantages are: the mask is provided with the epiglottis groove, the length of the vent pipe can be changed, the unsafe life of a patient in the operation and the additional damage and economic loss caused by replacing the laryngeal mask or inserting the tracheal catheter are avoided, meanwhile, the size of the mask opening can be changed, the sealing property is increased, and the air leakage is reduced.

Description

Double-cuff laryngeal mask with epiglottis groove and changeable length of ventilation tube

Technical Field

The utility model belongs to the technical field of the laryngeal mask technique and specifically relates to a two cover bag laryngeal mask that have epiglottis groove and can change breather pipe length.

Background

Laryngeal masks have been widely used for clinical anesthesia since their invention in 1981. The laryngeal mask is used as an supraglottic ventilation tool, has the advantages of being simple and convenient to operate and easy to master, being high in success rate of placement by beginners, small in airway stimulation and tolerant under shallow anesthesia, enabling hemodynamics of patients in induction and recovery periods to be more stable, being used for anesthesia for keeping spontaneous respiration and controlling ventilation, being few in complications after laryngeal mask surgery and the like, becomes the most important airway equipment outside a tracheal catheter at present, and is widely used for airway management of patients in general anesthesia surgeries at home and abroad, treatment of emergency airways and intubation of difficult airways.

The laryngeal mask is inserted into the laryngeal part of the pharynx through the oral cavity, the glottis of a patient needs to be covered by the mouth of the laryngeal mask, the epiglottis on the glottis is completely positioned in the mask, the cuff is inflated, the inflated cuff is tightly attached to the periphery of the glottis, so that when the patient is ventilated through the ventilation pipe of the laryngeal mask, oxygen or air can completely enter the glottis and then completely enter the trachea and the double lungs, air leakage is avoided, and the life safety of the patient in the operation is guaranteed. If the glottis is not completely covered by the laryngeal mask opening, or the epiglottis does not enter the mask opening, or the inflated cuff is not tightly attached to the periphery of the glottis, or the inflated cuff is pressed by the epiglottis, the pressed epiglottis can cover the glottis, when the patient is ventilated through the laryngeal mask ventilation tube, oxygen or air can leak from a gap between the laryngeal mask cuff and the periphery of the glottis, although a part of the residual gas can enter the glottis and further enter the trachea and the double lungs, the residual gas cannot be guaranteed to maintain the sufficient ventilation of the patient, and the possibly insufficient ventilation can be caused. If the inflated cuff presses the epiglottis and the pressed epiglottis covers the glottis, when the patient is ventilated through the laryngeal mask airway, oxygen or air can not enter the glottis to cause ventilation failure, so that the life safety of the patient in operation can not be ensured, and if the airway is unsafe, the patient can be suffocated and die due to insufficient ventilation or failure! Therefore, the laryngeal mask must be inserted into position to completely cover the glottis, the epiglottis enters the mask opening completely, and the cuff is inflated to fit tightly around the glottis.

The epiglottis is located above the glottis and is flat like a leaf of a tree. During breathing or speaking, the epiglottis is oriented upwards, opening the glottis. When swallowing things, the epiglottis is downward and covers the glottis to prevent things from entering into the trachea. The epiglottis of some patients is longer, the epiglottis of some patients is shorter, the epiglottis of some patients is straight, the epiglottis of some patients is slightly bent, and the like. When a patient with a long epiglottis is inserted into the laryngeal mask, because the laryngeal mask is not provided with a special epiglottis groove but is only provided with a shallow groove, the epiglottis cannot keep the original upright posture after entering the shallow groove and is bent and deformed, the possibility that the epiglottis covers the glottis exists, even the longer epiglottis extends out from the shallow groove to cause that the cuff cannot be sealed with the periphery of the glottis, therefore, the ventilation failure or air leakage can be caused when the patient is ventilated, the satisfactory ventilation can not be achieved, and the potential safety hazard can exist for the life of the patient. Of course, once the ventilation fails to be satisfactory, the original laryngeal mask needs to be pulled out and put into a larger laryngeal mask again, or the tracheal tube is directly inserted, but the larger laryngeal mask still has no special epiglottis groove and still has a shallow groove, so that the epiglottis can not be ensured to enter the groove of the larger laryngeal mask to keep the original upright posture, and great uncertainty exists. Thus, the patient is bound to be hurt, the life safety of the patient is not liable, the laryngeal mask which can not be inserted in place is charged, and certain economic loss is caused to the patient.

Chinese patent documents: CN201510300766.6, application date 2015.06.03, patent names: a novel laryngeal mask. Discloses a novel laryngeal mask, which comprises an air bag, a breather pipe, a double-channel joint, an inflation pipe, an indicating air bag and a one-way valve; the air inlet end of the vent pipe comprises two mutually independent trachea passages and an esophagus drainage passage; the trachea channel is divided into a main trachea channel and a branch trachea channel which are communicated with each other; an epiglottis lifting table is arranged in front of the main trachea channel, and a wedge-shaped groove is arranged in front of the epiglottis lifting table.

Chinese patent documents: CN201820799325.4, application date 2018.05.24, patent names: stomach tube groove laryngeal mask. Discloses a stomach tube groove laryngeal mask, which comprises a mask body capable of covering oral mucosa around a glottis and a mask body tube which is in adaptive connection with the mask body; the cover body comprises a cover body bottom plate and a cover main body arranged on the cover body bottom plate, and a cover body cavity which can be communicated with the cover body pipe is arranged in the center area in the cover main body; a bottom plate pressure regulating groove is formed in the bottom plate of the cover body at the bottom of the cover body, and the bottom plate pressure regulating groove and the cover body are respectively located on two sides of the cover body bottom plate; the cover body is internally provided with a pressure regulating pipe communicated with the bottom plate pressure regulating groove, one end of the cover body, far away from the cover main body, is provided with a pressure regulating hole, and the pressure regulating hole can be communicated with the bottom plate pressure regulating groove through the pressure regulating pipe.

The novel laryngeal mask disclosed in the patent document CN201510300766.6 is reasonable in design, meets clinical requirements, not only can be smoothly pressed into the throat of a patient, but also can drain esophagus and stomach contents, ensures surgical ventilation, improves use safety, and can complete tracheal intubation through the laryngeal mask; the stomach tube groove laryngeal mask in patent document CN201820799325.4 is compact in structure and can be matched with a stomach tube, the positioning of the laryngeal mask and a glottis cannot be affected in a patient in which the stomach tube is placed, the ventilation and sealing effects of the laryngeal mask can be ensured, the complexity and the use cost of the laryngeal mask are reduced, the pressure regulation in the suction process can be realized, the blocking of an airway by an epiglottis is avoided, and the use stability and reliability are improved. However, there is no report on a double-cuff laryngeal mask with an epiglottis channel and a changeable length of a ventilation tube, which can avoid the unsafe life of a patient in operation and the additional damage and economic loss caused by replacing the laryngeal mask or inserting the tracheal tube, can change the size of the mask opening, increase the sealing performance and reduce the air leakage.

In conclusion, the double-cuff laryngeal mask with the epiglottis groove and the changeable length of the ventilation tube is continued, so that the unsafe life of a patient in the operation and the additional damage and economic loss caused by replacing the laryngeal mask or inserting the tracheal tube are avoided, meanwhile, the size of the mask opening can be changed, the sealing property is increased, and the air leakage is reduced.

Disclosure of Invention

The utility model aims at overcoming prior art's is not enough, provides and has the epiglottis groove and can change breather pipe length, avoids extra damage, the economic loss that the life is unsafe and change laryngeal mask or insert endotracheal tube and bring in patient's art, can change the cover mouth size simultaneously, has increased the adaptation, reduces the two cuff laryngeal mask that have the epiglottis groove and can change breather pipe length of gas leakage.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a double-cuff laryngeal mask with an epiglottis groove and capable of changing the length of an air pipe is characterized in that the laryngeal mask comprises an inner cuff, an outer cuff, a mask opening, a mask body, an air pipe, an extension pipe, an inner cuff inflation valve and an outer cuff inflation valve; the internal cuff is arranged on the bottom surface of the cover body; the outer cuff is sleeved on the periphery of the inner cuff; the cover opening is formed naturally after the inner cuff or the outer cuff is inflated; the cover body is of a structure with a certain length and a top end and a wide bottom, and an epiglottis groove is formed inside the cover body; the top of the cover body is connected and communicated with the front end of the vent pipe; the telescopic pipe is arranged at the tail end of the vent pipe; the tail end of the vent pipe is connected with a connector; the inner cuff inflation valve is connected with the inner cuff through an inner cuff inflation tube; the external cuff inflation valve is connected with the external cuff through an external inflation tube.

In a preferred technical scheme, the outer cuff and the outer cuff are in an air-free compressed state in an uninflated state, the surfaces of the outer cuff and the outer cuff are smooth, and the surfaces of the two air bags are still smooth after the two air bags are inflated.

As a preferable technical scheme, the cover opening is in a tip-shaped structure.

As a preferred technical scheme, the connector arranged at the tail end of the vent pipe in a connected mode is an international standard connector.

As a preferred technical scheme, the tail sections of the internal inflation tube and the external cuff inflation tube body are arranged outside the air tube and are respectively connected with the internal cuff inflation valve and the external cuff inflation valve, the front sections of the internal inflation tube and the external cuff inflation tube body are respectively arranged inside the cover body and the air tube, and the head ends of the internal inflation tube and the external cuff inflation tube body are respectively connected with the external cuff and the external cuff.

The utility model has the advantages that:

1. the internal cuff and the external cuff can be respectively inflated or deflated by controlling the internal inflation valve and the external inflation valve, so that the size of the mask opening can be changed, and the mask is suitable for patients with different glottis sizes.

2. The cover opening is in a tip-shaped structure, so that the laryngeal mask is easier to insert.

3. After the inner cuff and the outer cuff are inflated simultaneously, the bonding area of the cuffs and tissues around the glottis can be increased, so that the tightness is increased, and air leakage is reduced.

4. The external cuff and the external cuff are both in an airless compression state under the uninflated state, the surfaces of the external cuff and the external cuff are both smooth, and the surfaces of the two air cells are still smooth after the two air cells are inflated, so that the surface of the uninflated cuff in the compression state or the surface of the inflated air cell can not generate discomfort for the throat of a patient during normal use, and meanwhile, the gas inside the two cuffs can be pumped out at any time after the two cuffs are inflated, so that the cuffs are in the airless compression state.

5. The breather pipe is located to inside cuff gas tube and outside cuff gas tube body end section to connect inside cuff gas tube, outside cuff gas tube respectively, the cover body is placed respectively in to the anterior segment inside and the breather pipe, the head end is connected with outside cuff, outside cuff respectively, be convenient for inflate in the cuff of difference through the gas tube of difference, thereby be used for ventilating of patient.

6. The mask body is designed to be wide at the bottom and top, has a certain length and is internally provided with an epiglottis groove, namely, the epiglottis has certain length and width, so that after entering the mask opening, the epiglottis keeps the originally opened posture in the respiratory state as much as possible, cannot be bent and deformed in length and width, cannot be folded back, cannot extend out of the mask opening because of too long epiglottis, and can be fully unfolded in the epiglottis groove, so that the glottis is fully opened, and the unsafe life of a patient in the operation and the additional damage and economic loss caused by replacing a laryngeal mask or inserting a tracheal catheter are avoided.

7. The flexible design of the flexible pipe of breather pipe back end through stretching or retrieve alright control the length of breather pipe to no matter the depth of patient's oral cavity, all can make the breather pipe extend to the oral cavity and be convenient for connect the anesthesia machine return circuit to ventilate for the patient, thereby can satisfy the different patient's of throat degree of depth use.

8. The interface that breather pipe end connection was equipped with is international standardized interface, is used for connecting the anesthesia machine during the use to can be used for carrying oxygen for the patient.

Drawings

FIG. 1 is a schematic front side three-dimensional structure of a double-cuff laryngeal mask with an epiglottis groove and a changeable length of a ventilation tube according to the present invention.

FIG. 2 is a schematic view of the rear side of a double-cuff laryngeal mask with epiglottis grooves and changeable length of the ventilation tube according to the present invention.

Detailed Description

The invention will be further described with reference to the following examples and with reference to the accompanying drawings.

The reference numerals and components referred to in the drawings are as follows:

1. inner cuff 2. outer cuff

3. Cover mouth 4. cover body

5. Ventilating pipe 6 telescopic pipe

7. Internal cuff inflation valve 71, internal cuff inflation tube

8. External cuff inflation valve 81, external cuff inflation tube

Example 1

Referring to fig. 1, fig. 1 is a schematic front side three-dimensional structure view of a double-cuff laryngeal mask with an epiglottis groove and a changeable length of a ventilation tube according to the present invention. A double-cuff laryngeal mask with an epiglottis groove and capable of changing the length of an air pipe comprises an inner cuff 1, an outer cuff 2, a mask opening 3, a mask body 4, an air pipe 5, an extension pipe 6, an inner cuff inflation valve 7 and an outer cuff inflation valve 8; the inner cuff 1 is arranged on the bottom surface of the cover body 4; the outer cuff 2 is sleeved on the periphery of the inner cuff 1; the mask opening 3 is formed naturally after the inner cuff 1 or the outer cuff 2 is inflated; the cover body 4 is of a structure with a certain length and a top end and a wide bottom, and an epiglottis groove is formed inside the cover body; the top of the cover body 4 is connected and communicated with the front end of the vent pipe 5; the telescopic pipe 6 is arranged at the tail end of the vent pipe 5; the end of the vent pipe 5 is connected with a connector 51; the internal cuff inflation valve 7 is connected with the internal cuff 1 through an internal cuff inflation tube 71; the external cuff inflation valve 8 is connected with the external cuff 2 through an external inflation tube 81.

It should be noted that: the internal cuff 1 and the external cuff 2 can be respectively inflated or deflated by controlling the internal inflation valve 7 and the external inflation valve 8, so that the size of the mask opening 3 can be changed, and the mask is suitable for patients with different glottis sizes; the cover opening 3 is of a tip-shaped structure, so that the laryngeal mask is easier to insert; after the inner cuff 1 and the outer cuff 2 are inflated simultaneously, the bonding area between the cuffs and tissues around the glottis can be increased, so that the tightness is increased, and the air leakage is reduced; the external cuff 1 and the external cuff 2 are both in an airless compression state under the uninflated state, the surfaces of the external cuff and the external cuff are both smooth, and the surfaces of the two air cells are still smooth after being inflated, so that the surface of the uninflated cuff in the compression state or the surface of the inflated air cell can not generate uncomfortable feeling on the throat of a patient when the external cuff and the external cuff are normally used, and meanwhile, the air in the two cuffs can be pumped out at any time after being inflated, so that the cuffs are in the airless compression state; the tail sections of the inner inflatable tube 71 and the outer cuff inflatable tube 81 are arranged outside the vent pipe 5 and are respectively connected with the inner cuff inflatable valve 7 and the outer cuff inflatable valve 8, the front sections of the inner inflatable tube and the outer cuff inflatable tube are respectively arranged inside the cover body 4 and the vent pipe 5, and the head ends of the inner inflatable tube and the outer cuff are respectively connected with the outer cuff 1 and the outer cuff 2, so that the inner inflatable tube and the outer cuff can be conveniently inflated into different cuffs through different inflatable valves, and the inner cuff and the outer cuff; the mask body 4 is designed to be a tip with a wide bottom and a certain length, and an epiglottis groove is formed inside the mask body, namely, the epiglottis has certain length and width, so that after entering the mask opening, the epiglottis keeps the original open posture in the respiratory state as much as possible, cannot be bent and deformed in length and width, cannot be folded back, cannot extend out of the mask opening 3 because the epiglottis is too long, and can be fully unfolded in the epiglottis groove, so that the glottis is fully opened, and unsafe life of a patient in the operation and extra injury and economic loss caused by replacing a laryngeal mask or inserting a tracheal catheter are avoided; the length of the ventilation pipe 5 can be controlled by stretching or recovering the design of the telescopic pipe 6 at the rear section of the ventilation pipe 5, so that the ventilation pipe 5 can extend out of the oral cavity of a patient no matter the oral cavity is deep or shallow, the ventilation pipe is convenient to connect an anesthesia machine loop to ventilate the patient, and the use of the patient with different laryngeal depths can be met; the connector 51 connected and arranged at the tail end of the ventilation pipe 5 is an international standard connector and is used for connecting an anesthesia machine when in use, so that oxygen can be delivered to a patient;

the utility model discloses a laryngeal mask application method: before the laryngeal mask is placed into the laryngeal part of a patient, the internal cuff inflation valve 7 can be firstly utilized to inflate the internal cuff 1, after a mask opening formed by the internal cuff 1 is used normally, the telescopic pipe 6 is adjusted to enable the ventilation pipe 5 body to be at a proper length, the laryngeal mask is conveyed to the laryngeal position of the patient, the epiglottis of the patient is enabled to be fully unfolded in an epiglottis groove formed in the mask body 4, the glottis is enabled to be fully opened, then the tail end of the ventilation pipe 5 is connected with an anesthesia machine by utilizing an international standard interface 51 to convey oxygen for the patient, if the ventilation effect is not satisfactory in the ventilation process, the mask opening 3 formed by the internal cuff 1 is too small to seal the glottis of the patient, so that the ventilation effect is not good, at the moment, only the external cuff 2 is required to be inflated by utilizing the external inflation valve 8, and meanwhile, the internal cuff inflation valve 71 is utilized to discharge the gas, the inner cuff 1 is in an airless compression state, and the outer cuff 2 is arranged at the periphery of the inner cuff, so that a cover opening 3 formed after the outer cuff 2 is inflated is larger than a cover opening 3 formed by the inner cuff 1, thereby completely sealing the glottis and ensuring better ventilation effect; in addition, in order to better improve the ventilation effect, the internal cuff inflation valve 7 and the external cuff inflation valve 8 can be utilized to simultaneously inflate the internal cuff 1 and the external cuff 2, so that the bonding area between the cuffs and tissues around the glottis is increased, the tightness can be effectively increased, and the air leakage is reduced.

The double-cuff laryngeal mask with the epiglottis groove and the changeable length of the vent pipe can respectively inflate or deflate the inner cuff and the outer cuff by controlling the inner inflation valve and the outer inflation valve, thereby changing the size of the mask opening and being suitable for patients with different glottis sizes; the cover opening is in a tip-shaped structure, so that the laryngeal mask is easier to insert; after the inner cuff and the outer cuff are inflated simultaneously, the bonding area of the cuffs and tissues around the glottis can be increased, so that the tightness is increased, and the air leakage is reduced; the external cuff and the external cuff are both in an airless compression state under the uninflated state, the surfaces of the external cuff and the external cuff are both smooth, and the surfaces of the two air cells are still smooth after being inflated, so that the surface of the uninflated cuff in the compression state or the surface of the inflated air cell can not generate uncomfortable feeling on the throat of a patient when the two air cells are normally used, and meanwhile, the air in the two cuffs can be pumped out at any time after being inflated, so that the cuffs are in the airless compression state; the tail sections of the internal cuff inflation tube and the external cuff inflation tube are arranged outside the air tube and are respectively connected with the internal cuff inflation valve and the external cuff inflation valve, the front sections are respectively arranged inside the cover body and the air tube, and the head ends are respectively connected with the external cuff and the external cuff, so that different cuffs can be inflated through different inflation valves conveniently, and the inflatable cuff is used for the ventilation of a patient; the mask body is designed to be wide at the bottom and top and has a certain length, and an epiglottis groove is formed inside the mask body, namely, the epiglottis has certain length and width, so that after entering the mask opening, the epiglottis keeps the originally opened posture in the respiratory state as much as possible, cannot be bent and deformed in length and width, cannot be folded back, cannot extend out of the mask opening because the epiglottis is too long, and can be fully unfolded in the epiglottis groove, so that the glottis can be fully opened, and the unsafe life of a patient in the operation and the additional damage and economic loss caused by replacing a laryngeal mask or inserting a tracheal catheter can be avoided; the length of the vent pipe can be controlled by stretching or recovering the telescopic pipe at the rear section of the vent pipe, so that the vent pipe can extend out of the oral cavity of a patient no matter the oral cavity is deep or shallow, the vent pipe can be conveniently connected with an anesthesia machine loop to ventilate the patient, and the use of the patient with different laryngeal depths can be met; the interface that breather pipe end connection was equipped with is international standardized interface, is used for connecting the anesthesia machine during the use to can be used for carrying oxygen for the patient.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.

Claims (3)

1. A double-cuff laryngeal mask with an epiglottis groove and capable of changing the length of an air pipe is characterized in that the laryngeal mask comprises an inner cuff, an outer cuff, a mask opening, a mask body, an air pipe, an extension pipe, an inner cuff inflation valve, an inner cuff inflation pipe, an outer cuff inflation valve and an outer cuff inflation pipe; the internal cuff is arranged on the bottom surface of the cover body; the outer cuff is sleeved on the periphery of the inner cuff; the cover opening is formed naturally after the inner cuff or the outer cuff is inflated, and the cover opening is in a tip-shaped structure; the cover body is of a structure with a certain length and a top end and a wide bottom, and an epiglottis groove is formed inside the cover body; the top of the cover body is connected and communicated with the front end of the vent pipe; the telescopic pipe is arranged at the tail end of the vent pipe; the tail end of the vent pipe is connected with a connector; the tail sections of the internal cuff inflation tube and the external cuff inflation tube body are arranged outside the ventilation tube, and the front sections are respectively arranged inside the cover body and the ventilation tube; the inner cuff inflation valve is connected with the inner cuff through an inner cuff inflation tube; the external cuff inflation valve is connected with the external cuff through an external cuff inflation tube.

2. The laryngeal mask of claim 1, wherein the outer cuff, the outer cuff in an uninflated state, are both non-pneumatically compressed and have smooth surfaces, the surfaces remaining smooth after inflation of both balloons.

3. The laryngeal mask of claim 1, wherein the connector provided for connection to the distal end of the ventilation tube is an international standard connector.

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