CN101057994B - Laryngeal mask with guiding tube used for inserting stomach tube - Google Patents
Laryngeal mask with guiding tube used for inserting stomach tube Download PDFInfo
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- CN101057994B CN101057994B CN 200710102366 CN200710102366A CN101057994B CN 101057994 B CN101057994 B CN 101057994B CN 200710102366 CN200710102366 CN 200710102366 CN 200710102366 A CN200710102366 A CN 200710102366A CN 101057994 B CN101057994 B CN 101057994B
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- stomach tube
- cuff portion
- guide surface
- laryngeal mask
- stomach
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
- A61M16/0409—Special features for tracheal tubes not otherwise provided for with mean for closing the oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
- A61M16/0415—Special features for tracheal tubes not otherwise provided for with access means to the stomach
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- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
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Abstract
It is intended to provide a laryngeal mask comprising: an inflation cuff having an inflatable hollow tubular part, a back plate which is air-tightly bonded to the hollow tubular part so as to cover one end of the inside diameter side space, and a cuff inside space which is surrounded by the inside diameter curved face and the inside face of the back plate and has an opening in the side opposite to the back plate; an airway tube which has one end opening toward the cuff inside space and the other end opening toward the space outside the oral cavity; and a gastric tube insertion guide wherein a guide face, which aims at inserting a gastric tube from the mouth until its front edge reaches the stomach or esophagus region in the state of inserting the inflation cuff into the pharyngeal region, is continuously or intermittently provided from the inflation cuff to the outside of the oral cavity.
Description
Technical field
The present invention relates to a kind of laryngeal mask that is installed in larynx portion (Laryngeal Mask Airway:LMA) that is used to guarantee the ventilation and the breathing of lung
Background technology
Be ventilation and the breathing of guaranteeing lung, use the method for endotracheal intubation for a long time, but this kind endotracheal intubation configuration operation in case of emergency is difficult to carry out, and has the danger of intubation defeat, or causes the danger of damage to trachea reliable and securely.Therefore, being widely used in patient's larynx portion now installs expansion cuff portion and replaces in the past endotracheal intubation with the laryngeal mask of guaranteeing air flue.
This laryngeal mask comprises the expandable expansion cuff portion that has flexual pneumatic duct and install at the front end of this pneumatic duct.In addition, using method is that the expansion cuff portion under the contraction state is inserted larynx portion by patient's oral area, and the internal feed gas to expansion cuff portion expands it then, thereby makes the air pipe inlet periphery of the peripheral part of expansion cuff portion and larynx portion airtight.Thus, the internal communication of trachea and expansion cuff portion, and form and the state of throat on every side, esophagus isolating seal.And, by with the pneumatic duct of the internal communication of expansion cuff portion, guaranteed the air flue between lung and trachea and the space outerpace.By this air flue of guaranteeing, the patient can carry out general breathing or pneumatic duct is connected with respirator, thereby can practice artificial respiration.
But, use laryngeal mask, during the patient carried out general breathing or artificial respiration, the content of stomach produced adverse current or generates the situation of vomitting and often occurs.At this moment, utilize expansible cuff portion, trachea is sealed, but structurally because be difficult to form air-tight state completely, therefore, contains the content that exists in the stomach of gastric juice or the esophagus and enters expansion cuff portion, thereby have the danger of stopping up trachea.
Therefore, at stopping up of this kind trachea problem, proposed to have the technical scheme of the laryngeal mask of discharge pipe, this laryngeal mask utilization attracts to be used for the content that stomach or esophagus exist is discharged (for example, with reference to patent document 1) to the outside.
Patent documentation: the spy opens flat 2-283378 number
In the laryngeal mask described in the patent documentation 1, with pneumatic duct dividually, be used for the content that stomach or esophagus exist is combined with expansion cuff portion to the discharge pipe of external discharge.That is, a side's of discharge pipe engaged at end is in expansion cuff portion, and the inside of inserting the patient simultaneously with expansion cuff portion, and an other end of discharge pipe is stayed patient's outside, for example, links with suction apparatus, attracts the content that exists in stomach or the esophagus.
In addition, in patent documentation 1 described laryngeal mask, the end of together inserting a side of the intravital discharge pipe of patient with expansion cuff portion has the part of the leading section that is positioned at expansion cuff portion and extends more forward than expansion cuff portion, when expansion cuff portion is installed in larynx portion, make the end of a side can insert intraesophageal part.
Herein, the end of a side of the former discharge pipe is positioned at the leading section of cuff portion, when the content that exists in stomach or the esophagus arrives the boundary portion of larynx portion and esophagus, can begin to attract.But, as mentioned above, utilize expansion cuff portion to be difficult to form air-tight state completely, therefore the probability of the content of part intrusion cuff portion inside is big, thereby makes the probability of trachea obturation big.
In addition, the content that exists from prevent stomach or esophagus is invaded the viewpoint of expansion cuff portion inside, thinks that the latter's the end of a side of discharge pipe inserts in the esophagus better, but has following problem.
Under the situation of using laryngeal mask, for example for being in the patient who stops spontaneous breathing state, the most important thing is to install reliably rapidly laryngeal mask, break away from the respiratory arrest state.But the use latter's laryngeal mask is thought expansion cuff portion promptly is installed in very difficulty of larynx portion.Even because only be that expansion cuff portion is inserted the operation that larynx portion installs from patient's mouth also be very difficult operation, in addition, when inserting expansion cuff portion, the discharge pipe that must be stretched out by the front end of expansion cuff portion is crossed sphincter of gullet and is inserted esophagus inside, carries out two operations simultaneously and has further increased difficulty.
In addition, use the laryngeal mask in the past do not have discharge pipe, consider expansion cuff portion is being installed in larynx portion with after guaranteeing to breathe, the stomach tube that will be used to individually to attract discharge the content of stomach inserts stomach or esophagus by mouth.But even only stomach tube is inserted stomach or esophagus, if consider that the structure of people's oral cavity to larynx portion is crooked anatomically, then this is extremely difficult operation as can be known.
Summary of the invention
Thereby, the object of the present invention is to provide a kind of, it can address the above problem, the expansion cuff portion of emergency promptly can be installed to larynx portion, and in laryngeal mask uses, can prevent effectively that the content that exists in stomach or the esophagus from entering the laryngeal mask of the inside of the expansion cuff portion of installing in larynx portion.
A kind of laryngeal mask that is used to guarantee the ventilation and the breathing of lung possesses:
(1) expansion cuff portion, it has by the backboard that engages airtightly to the expandable hollow and annular of inner blanketing gas portion, with the mode of the end of the spatial side of internal side diameter that covers described hollow and annular portion and described hollow and annular portion, and is surrounded by the inner face of the internal side diameter curved surface of described hollow and annular portion and described backboard and in the inner space of the opposition side opening of described backboard
After mouth inserted larynx portion, the open side curved surface of expansible described hollow and annular portion can wholely around be close to the air pipe inlet periphery in described expansion cuff portion;
(2) pneumatic duct, this pneumatic duct is connected with described expansion cuff portion, the end of one side of described pneumatic duct is at the inner space opening of described cuff portion, inserts under the state of larynx portion in described expansion cuff portion, and the end of described pneumatic duct opposite side is at extrabuccal space opening;
(3) stomach tube inserts guide portion, it has in described expansion cuff portion and is inserted under the state of larynx portion, between outside the described expansion cuff portion of larynx portion and oral cavity continuously or the guide surface that is provided with intermittently, the insertion of described guide surface guiding stomach tube is so that make the leading section of stomach tube arrive the zone of stomach or esophagus from mouth.
An embodiment of laryngeal mask of the present invention is the laryngeal mask that is used to guarantee the ventilation and the breathing of lung, it is characterized in that, possess: (1) expansion cuff portion, it has by to the expandable hollow and annular of inner blanketing gas portion, the backboard that engages airtightly with the mode of the end of the spatial side of internal side diameter that covers described hollow and annular portion and described hollow and annular portion, and surrounded by the inner face of the internal side diameter curved surface of described hollow and annular portion and described backboard and in the inner space of the opposition side opening of described backboard, after mouth inserted larynx portion, the open side curved surface of expansible described hollow and annular portion can wholely around be close to the air pipe inlet periphery in described expansion cuff portion; (2) pneumatic duct, this pneumatic duct is connected with described expansion cuff portion, the end of one side of described pneumatic duct is at the inner space opening of described cuff portion, inserts under the state of larynx portion in described expansion cuff portion, and the end of described pneumatic duct opposite side is at extrabuccal space opening; (3) stomach tube inserts guide portion, it has in described expansion cuff portion and is inserted under the state of larynx portion, between outside the described expansion cuff portion of larynx portion and oral cavity continuously or the guide surface that is provided with intermittently, the insertion of described guide surface guiding stomach tube is so that make the leading section of stomach tube arrive the zone of stomach or esophagus from mouth.
Under the situation of using laryngeal mask,, answer override that expansion cuff portion is installed in larynx portion for guaranteeing patient's breathing.But, in the installation of expansion cuff portion, invade the mechanism of trachea as the content that exists in stomach that prevents to contain gastric juice or the esophagus, think the insertion stomach tube, attract the content that exists in stomach or the esophagus and excrete tool effect.But, in this case, do not allow owing to insert the insertion promptly that stomach tube hinders expansion cuff portion.
Therefore, in the laryngeal mask of present embodiment, possess stomach tube and insert special-purpose guide portion, after at first expansion cuff portion being installed in larynx portion, it can guide stomach tube to be inserted into the esophagus inlet smoothly, even is inserted into the desired region of stomach or esophagus.
If, under the situation of the guide portion that does not have special tube used for inserting stomach tube, after expansion cuff portion is installed in larynx portion, the stomach tube monomer must be inserted into stomach or esophagus by mouth, still, anatomically, people's oral cavity is to the structural bending of larynx portion, therefore, inwall of the front end of stomach tube and throat etc. contacts and buckles in the insertion process, inserts extremely difficult.In addition, if even have under the situation of stomach tube that inwall with throat blocks the intensity that also can not insert with buckling in use, therefore the probability height of damage throat inwall is difficult to realize.
Be directed to this, the laryngeal mask of present embodiment mainly inserts guide portion by expansion cuff portion, pneumatic duct, stomach tube and constitutes, and in addition, also can connect the gas tube that is used for to the hollow and annular portion supply gas of expansion cuff portion.
Herein, " expansion cuff portion " makes by having flexual material, have hollow and annular portion and with the bonded airtightly backboard of mode of the end of the spatial side of the internal side diameter that covers this hollow and annular portion, and form by the inner face of the internal side diameter curved surface of hollow and annular portion and backboard surround, in the cuff portion inner space of the opposition side opening of backboard.
Herein, can be by the supply and exhaust of gas tube with the end to the inside of hollow and annular portion blanketing gas and make its expansion, in addition,, hollow and annular portion is shunk by discharging the gas of filling with the end by the supply and exhaust of gas tube.By this structure, can after expansion cuff portion inserts larynx portion, hollow and annular portion be expanded, the open side curved surface of expansible hollow and annular portion is whole around it to be close to the air pipe inlet periphery.Thus, trachea is communicated with cuff portion inner space, and can form and the space of throat or esophageal areas isolating seal on every side.And gas tube has under the state after the insertion larynx portion of expansion cuff portion, supply and exhaust can be arranged on extrabuccal length with the end.
In addition, for being close to can form sealing state with the air pipe inlet periphery, expansion cuff portion has roughly oval shape, and for inserting easily, leading section can form thin a little shape.In addition, can determine only shape, size according to patient's sex, age.
Next, " pneumatic duct " forms by having flexual material equally, and insert in expansion cuff portion under the state of larynx portion at the inner space of cuff portion opening the end of a side, and the end of opposite side has can be configured in extrabuccal length.By above configuration, kept and on every side the throat or the airtight conditions of esophagus, in the connected space of cuff portion inner space and trachea, can be by outside air feed, aerofluxus, thus can guarantee the ventilation and the breathing of lung.
Next, " stomach tube insertion guide portion " forms by having flexual material equally, insert in expansion cuff portion under the state of larynx portion, be used to insert the position that the guide surface of stomach tube has by expansion cuff portion and begin to extend to continuously or intermittently extrabuccal structure.
Particularly, consider that guide surface is arranged near the leading section of the expansion cuff portion the inlet of esophagus continuously or intermittently and stretches out between the end of extrabuccal pneumatic duct, for example, consider that the outside at the outside of the backboard of expansion cuff portion and pneumatic duct is provided with the structure of guide surface.In the case, in order to keep stomach tube from both sides, consider two guide surfaces are disposed according to the external diameter corresponding intervals with stomach tube.In addition, in insertion, break away from guide portion, also consider guide surface is formed circular-arc that external diameter with stomach tube meets for not making stomach tube.Guide surface is being formed under the circular-arc situation, two guide surface combinations can form the circular shape of the one of the center angle with regulation.
In addition, also can in the mode that forms protuberance guide surface be set, also can recess be set to form guide surface in the outside of the backboard of expansion cuff portion and the outside of pneumatic duct in the outside of the backboard of expansion cuff portion and the outside of pneumatic duct.Under the situation that recess formation guide surface is set, because not from the outside part of protruding of the appearance of expansion cuff portion or pneumatic duct, so preferred.But, even be provided with under the situation of guide surface in the mode that forms protuberance, by protuberance being arranged on the position that does not hinder expansion cuff portion and stomach tube to insert, the insertion smoothly of also can realize expanding cuff portion and stomach tube.
In addition, " guide surface is provided with continuously " meaning is on the length direction of above-mentioned guide surface, exist continuously between the expansion cuff portion of larynx portion and outside, oral cavity, " guide surface is provided with intermittently " meaning has part and the non-existent part of guide surface that guide surface exists in the longitudinal direction.Under the situation that the non-existent part of guide surface is set, the tortuous situation that needs to consider stomach tube insertion path determines that it is provided with the position.In inserting the zone of path near linear state, if even the non-existent part of guide surface is arranged, the insertion of stomach tube can not have problems yet, but in the zone of inserting the path bending, then needs to be used to guide the guide surface of stomach tube.
In addition, also can with expansion cuff portion or pneumatic duct independently, adopt individual components that guiding tube used for inserting stomach tube portion is set, for example, consider to use piped parts described as follows.
So long as have pliability, enter material no problem in the body, just can use all material as the material of laryngeal mask.Wherein, preferably use resin material, particularly requiring to utilize autoclave to carry out under the autoclaved situation, preferred silicone resin, in addition, do not requiring under the situation of these sterilizations, can use the soft resin of thermoplasticity of other ethylene chloride resin, polyurethane etc.
In addition, expansion cuff portion, pneumatic duct, and stomach tube insert guide portion and can use same material, also can use different materials.About the hardness of material, the cuff portion of for example expanding considers to use the flexibility resin, and pneumatic duct considers to use the resin of hard a little, and stomach tube inserts guide portion also can have same hardness with pneumatic duct.In addition, consider that also stomach tube is inserted guide portion and expansion cuff portion or pneumatic duct to form.
The using method of the laryngeal mask of present embodiment at first under the state that hollow and annular portion shrinks, is inserted into by mouth expansion cuff portion the assigned position of larynx portion by throat.Next,, hollow and annular portion is expanded, be close to, thereby trachea is communicated with inner space in the cuff, and form and throat on every side or the isolated sealing state of esophagus with the air pipe inlet periphery by the supply and exhaust that is exposed at extrabuccal gas tube end air feed.Thus, carry out the guaranteeing of air flue when urgent, for example, can expose on the extrabuccal end at pneumatic duct and connect respirator, thus the beginning artificial respiration.
Next, insert the extrabuccal end insertion stomach tube of guide portion from stomach tube.When the guide surface that stomach tube is inserted guide portion by stomach tube supports, by the throat and the expansion cuff portion of bending, and by the leading section of expansion cuff portion and then enter esophagus.And, according to circumstances, stomach tube can be inserted into the leading section that makes stomach tube and arrive intraesophageal assigned position or gastric.
Thus, can attract the content that exists in stomach or the esophagus from the open end of the stomach tube that inserts, and to external discharge.As mentioned above because the larynx portion that the front end of stomach tube can be inserted into and install expansion cuff portion fully away from stomach or the regulation zone of esophagus, so in the use of laryngeal mask, can prevent more reliably that content from invading in cuff portion inner space or the trachea.
According to present embodiment, can similarly expansion cuff portion be installed to guarantee breathing in larynx portion fast with laryngeal mask in the past, and, thereafter, utilizing stomach tube to insert guide portion can be easily and reliably stomach tube is inserted stomach or esophagus, thereby can discharge the liquid or the content that exist in stomach or the esophagus, prevent to trachea and invade, be suitable for using for a long time the situation of laryngeal mask in possible trouble.
Being characterized as of the embodiment of other of laryngeal mask of the present invention, in zone by described expansion cuff portion, described stomach tube insert guide portion roughly linearity extend, perhaps curvature is extended or flex point is extended one sentences in invariably.
Using stomach tube to insert under the situation of guide portion insertion stomach tube, reduce to insert impedance, it is very important can inserting smoothly, but in the zone of the position by expansion cuff portion, generation need change the situation that stomach tube inserts the direct of travel of guide portion in narrow range, thereby exists stomach tube to insert the anxiety of the insertion impedance increase of guide portion.Particularly under the situation with a plurality of bendings as the S word, promptly flex point is under plural situation, and the leading section of stomach tube is by first bending, entering second when crooked, contact consumingly with guide surface, thereby the probability of inserting difficulty is big.
Therefore, in the present embodiment, in the zone by expansion cuff portion, stomach tube inserts roughly linearity extension of guide portion, and perhaps curvature does not change or the extension of flex point in one sentences, and therefore, the problems referred to above can not take place, and can smoothly stomach tube be inserted.
The embodiment of other of laryngeal mask of the present invention is characterised in that, described expansion cuff portion is installed under the state of larynx portion, on the leading section near the described expansion cuff portion of esophagus inlet described guide surface is set.
In the present embodiment, when being installed in larynx portion, the guide surface that stomach tube inserts guide portion is set on the leading section of the expansion cuff portion that enters the mouth near esophagus, therefore, insert stomach tube as long as insert guide portion along stomach tube, just can arrive the inlet of esophagus reliably,, then the front end of stomach tube can be inserted into smoothly the position of the expectation of stomach or esophagus by continuing insertion.
Herein, below the inlet of esophagus, stomach tube is not set inserts guide portion, between esophagus and stomach, because do not have as the sweep from the oral cavity to the throat, so, stomach tube can be inserted smoothly even without guide portion yet.
And, structurally, stomach tube can be inserted guide portion and be provided with than the more forward extension of the leading section of expansion cuff portion ground.But if the length of the part of Yan Changing is long forward, the probability that then becomes the obstacle when larynx portion inserts is big.Thereby stomach tube inserts guide portion and preferably extends to till the leading section of expansion cuff portion, even or hypothesis extends more forward than expansion cuff portion leading section, when being positioned at larynx portion in expansion cuff portion, sphincter of gullet above the length that leaves also arrives.
The embodiment of other of laryngeal mask of the present invention is characterised in that, is the contact area between the outer surface that reduces described guide surface and described stomach tube, is provided with concaveconvex structure on described guide surface.
Using stomach tube to insert under the situation of guide portion insertion stomach tube, reduce the insertion impedance of stomach tube, be very important thereby can insert smoothly.In the present embodiment, by on the guide surface that inserts guide portion at stomach tube concaveconvex structure being set, can significantly reduce the friction area between guide surface and the stomach tube outer surface, thereby can reduce the insertion impedance of stomach tube significantly.Herein, can use with general triangular, all shapes headed by stairstepping, waveform, the zigzag roughly as the section shape of concaveconvex structure.
The embodiment of other of laryngeal mask of the present invention is characterised in that, is the contact area between the outer surface that reduces described guide surface and described stomach tube, and described guide surface is by matsurfaceization.
Herein, " matsurface guide surface " meaning is provided with fine concaveconvex structure on guide surface, in the present embodiment, by stomach tube being inserted the guide surface matsurfaceization of guide portion, the friction area between guide surface and the stomach tube outer surface can be significantly reduced, thereby the insertion impedance of stomach tube can be reduced significantly.In addition, be provided with on the guide surface beyond the concaveconvex structure, can be with the further roughening in surface.
And, as method, consider for example to use with the guide surface matsurfaceization, mother metal is mixed with different external particles, with the method for external particles co-extruded molding.But, also can make in all sorts of ways with by separating out atomic method or forming by chemical treatment headed by the method for concaveconvex structure.
The embodiment of other of laryngeal mask of the present invention is characterised in that the hardness of described guide surface is more than plastics hardness 60 degree.
Herein, the durometer hardness (with reference to JIS K7215) of " plastics hardness " meaning plastics.For improve the flatness that stomach tube inserts the guide surface of guide portion from the material aspect, plastics hardness is high more favourable more.In the present embodiment,, then can improve the flatness of sound guide face significantly, therefore can reduce the impedance of inserting stomach tube significantly as long as the hardness of guide surface has more than plastics hardness 60 degree.
The embodiment of other of laryngeal mask of the present invention is characterised in that, described stomach tube inserts guide portion and has piped parts, its inner face becomes described guide surface, on the part at least of described piped parts, is provided with continuously or intermittently along its length and makes the notch zone that can ventilate inside and outside the pipe.
In the present embodiment, stomach tube inserts guide portion and has the piped parts that inner face becomes guide surface, and therefore under the state after expansion cuff portion is installed in larynx portion, when inserted the outside, stomach tube can not break away from guide surface, thereby can positively insert with stomach tube.
In addition, side by side reduce the insertion impedance of stomach tube, thereby stomach tube can be inserted smoothly also is important factor, but, be inserted under the state of larynx portion in expansion cuff portion, stomach tube inserts the piped parts bending of guide portion, for the friction impedance between the outer surface that reduces guide surface and stomach tube, preferably inserts tubular part after the integral body of stomach tube is coated fluid lubricant.
In addition, if consider the discharge of the content that exists in stomach or the esophagus, the caliber of stomach tube is preferably big as far as possible, if consider laryngeal mask function originally, then the caliber of piped parts is preferably as far as possible little, and preferably increases the external diameter of pneumatic duct.
As mentioned above, preferably under the difference state seldom between the internal diameter of the piped parts of the external diameter of stomach tube and guiding tube used for inserting stomach tube portion, insert stomach tube.But, under the gap state seldom between the internal diameter of the piped parts of the external diameter of stomach tube and guiding tube used for inserting stomach tube portion, if insert the stomach tube that scribbles lubricant, then generate airtight conditions between the inner face of stomach tube and piped parts (guide surface), owing to intrinsic pressure, there is the anxiety of the insertion difficulty of stomach tube.
Therefore, the insertion guide portion of the stomach tube of present embodiment is to generate airtight conditions between the inner face (guide surface) that prevents stomach tube and piped parts, have ventilation device, it is provided with the inside and outside notch zone of ventilating of the insertion of stomach tube with the piped parts of guide portion.Thereby stomach tube can insert when the air of piped components interior is discharged laterally by the notch zone, therefore, can reduce the insertion impedance greatly.
This notch zone is provided with continuously or intermittently along the length direction that inserts with guide portion.The notch zone is provided with continuously and means and cut successive slot in the longitudinal direction.The width of this slot can have width arbitrarily according to purposes, but for preventing that stomach tube from dropping out, the section shape of piped parts preferably surpasses semicircle.
In addition, the notch zone is provided with intermittently and is considered to, and for example has a plurality of slotted holes in the longitudinal direction, or is having a plurality of circular holes in the longitudinal direction.Can have each hole with the spacing of homogeneous, also can be with inhomogenous spacing perforate.The size of this notch or spacing are preferably considered the optimum that the amount of the air that the intensity of piped parts and stomach tube should discharge in inserting is determined.
The embodiment of other of laryngeal mask of the present invention is characterised in that, the space of the inboard of described tubular part and described cuff portion inner space are in the gas-tight seal state.
In the present embodiment, the space and the cuff portion inner space of the inboard of the piped parts of stomach tube insertion guide portion are in the gas-tight seal state, can prevent that therefore the content that exists in stomach or the esophagus from inserting guide portion intrusion cuff portion inner space or trachea by stomach tube.
As concrete structure, the piped parts that stomach tube inserts guide portion are fixed under the situation of outside (for example outside of backboard) of expansion cuff portion, even be provided with the notch zone on the piped parts, also can keep gas-tight seal.
In addition, suppose to insert under the situation of internal run-through of the piped parts of guide portion and expansion cuff portion at stomach tube, be the inside that keeps piped parts and the hermetic seal between the cuff portion inner space, to carry out sealed engagement between piped parts and hollow and annular portion and/or the backboard, inside and cuff portion inner space in hollow and annular portion are not provided with the notch zone on the piped parts.
The embodiment of other of laryngeal mask of the present invention is characterised in that, the internal diameter of described piped parts is in 1.2 times of the external diameter of described stomach tube.
As mentioned above, if consider the discharge of the content that exists in stomach or the esophagus, the caliber of stomach tube is preferably big as far as possible, if consider the function of laryngeal mask, then the caliber of the piped parts of guiding tube used for inserting stomach tube portion is preferably as far as possible little, and preferably increases the caliber of pneumatic duct.In the present embodiment, as mentioned above, have the various mechanisms that are used for inserting smoothly stomach tube, therefore,, also stomach tube can be inserted smoothly even described stomach tube inserts the internal diameter of piped parts of guide portion in 1.2 times of the external diameter of stomach tube.
The invention effect
As mentioned above, according to the laryngeal mask that possesses guiding tube used for inserting stomach tube portion of the present invention, can similarly expansion cuff portion be installed to guarantee breathing in larynx portion fast with laryngeal mask in the past, and, thereafter, utilizing stomach tube to insert guide portion can be easily and reliably stomach tube is inserted stomach or esophagus, thereby can discharge liquid or the content that exists in stomach or the esophagus, prevent to trachea and invade, be suitable for using for a long time the situation of laryngeal mask in possible trouble.
In addition, insert guide portion,, can reduce the insertion impedance of stomach tube on guide surface by concaveconvex structure, matsurface guide surface being set, improving the hardness of guide surface and/or curvature not being changed etc. about stomach tube.
Also have, stomach tube inserts guide portion to have under the situation of piped parts, and stomach tube can not break away from from guide surface, thereby can insert reliably, in addition, by the notch zone that on tubular part, is provided with,, the impedance in the time of can reducing the insertion of stomach tube.
Description of drawings
To be that expression is of the present invention have the integrally-built axonometric chart and a profile of an embodiment that stomach tube inserts the laryngeal mask of guide portion to Fig. 1.
Fig. 2 is the profile of watching from the arrow A of Fig. 1,
Fig. 3 is the upward view of watching from the arrow C of Fig. 2.
To be that expression is of the present invention have an integrally-built axonometric chart of other embodiments that stomach tube inserts the laryngeal mask of guide portion to Fig. 4.
Fig. 5 is illustrated in other the axonometric chart of embodiment that stomach tube of the present invention inserts the notch zone that is provided with on the tubular part of guide portion.
Fig. 6 is illustrated in other the sectional view of embodiment that stomach tube of the present invention inserts the guide surface of guide portion.
Fig. 7 is that expression does not have the stomach tube of tubular part to insert the axonometric chart and the profile of an embodiment of guide portion.
Fig. 8 is that expression does not have the stomach tube of tubular part to insert other the profile of embodiment of guide portion.
Among the figure, the 2-laryngeal mask; 4-expansion cuff portion; 4a-hollow and annular portion; The 4b-backboard; 4c-cuff portion inner space; The 6-pneumatic duct; The 6a-peristome; 8-guiding tube used for inserting stomach tube portion; The piped parts of 8a-; The 8b-peristome; The 8c-end; The 8d-guide surface; The 10-end; The 10a-connecting connector; The 12-gas tube; The 12a-supply and exhaust is used the end; 14-notch zone; 20-internal side diameter space; The 20a-end; The 20b-end; 22-internal side diameter curved surface; 24-open side curved surface.
The specific embodiment
Followingly the embodiment that possesses the laryngeal mask of guiding tube used for inserting stomach tube portion of the present invention is described in detail with reference to accompanying drawing.
(explanation of an embodiment of the laryngeal mask that possesses guiding tube used for inserting stomach tube portion of the present invention)
(integrally-built explanation)
At first, about the method for an embodiment of the laryngeal mask that possesses guiding tube used for inserting stomach tube portion of the present invention, with reference to accompanying drawing 1～3 its overall structure of explanation.Fig. 1 represents the integrally-built axonometric chart (with reference to Fig. 1 (a)) of the laryngeal mask of present embodiment, reaches the profile of watching from the arrow B of Fig. 1 (a) (with reference to Fig. 1 (b)).In addition, Fig. 2 is the profile of watching from the arrow A of Fig. 1, and Fig. 3 is the upward view of watching from the arrow C of Fig. 2.And, in the following description, the direction of insertion of laryngeal mask being called front end, its opposition side is called the rear end.
The laryngeal mask 2 of present embodiment is by the pliability material, is in particular resin material and forms, and shown in Fig. 1 (a), possesses: expandable expansion cuff portion 4; Pneumatic duct 6, the end of one side engages with expansion cuff portion 4; Guiding tube used for inserting stomach tube portion 8, the end of one side engages with expansion cuff portion 4; Gas tube 12, it is connected with the inside of expansion cuff portion 4 under the state that can be communicated with.Expansion cuff portion 4 integral body are oval, and can be close to form airtight space with the air pipe inlet periphery of larynx portion.
Next, with reference to Fig. 1 (b) structure of this laryngeal mask 4 is described in detail.Expansion cuff portion 4 has: the 4a of hollow and annular portion, and it expands with the trachea periphery of larynx portion is close to; Backboard 4b, its with end 20a, the 20b of the both sides that cover the internal side diameter space 20 (oblique line part) that forms by the 4a of hollow and annular portion wherein the mode of the end 20a of a side engage airtightly with the 4a of hollow and annular portion.And form and to be surrounded by the inwall of the internal side diameter curved surface 22 of the 4a of hollow and annular portion and backboard 4b and at the inner space 4c of cuff portion of opposition side (the end 20b side) opening of backboard 4b.
The 4a of hollow and annular portion has oval tubular shape, gas tube 12 can be connected with the inside 4d of the 4a of hollow and annular portion communicatively, and from the end 12a inflation of the supply and exhaust of gas tube 12, the 4a of hollow and annular portion is expanded, thereby the open side curved surface of the 4a of hollow and annular portion can be close in its full week with the air pipe inlet periphery.Similarly, the gas from the supply and exhaust of gas tube 12 is filled with the inside of the end 12a inflation discharge hollow and annular 4a of portion then can make the expansible hollow and annular 4a of portion shrink.
Next, pneumatic duct 6 connects with backboard 4b as shown in Figure 2, has the peristome 6a at cuff portion inner space opening in the end of a side.The external diameter of pneumatic duct 6 and the mutual sealed engagement of backboard 4b thus, when pneumatic duct 6 is fixed on expansion cuff portion 4, keep the air-tightness of cuff portion inner space.In addition, the end 10 of the opposite side of pneumatic duct 6 is provided with and the attachable connecting connector 10a of respirator.
And pneumatic duct 6 inserts under the state of larynx portion in expansion cuff portion 4, can expose in extrabuccal enough length for setting has the end side 10 that comprises connecting connector 10a.
Next, guiding tube used for inserting stomach tube portion 8 as shown in Figure 2, has piped parts 8a, and its part is set up by expansion cuff portion 4.In the present embodiment, the inner face of piped parts 8a becomes the guide surface of guiding stomach tube when inserting.The structure particularly of this guiding tube used for inserting stomach tube portion 8 is, piped parts 8a connects backboard 4b from the right side of paper, by the inner space 4c of cuff portion, and connect the 4a of hollow and annular portion of the front of expansion cuff portion 4, and have peristome 8b in the outside of the leading section that expands oral area 4.In this breakthrough part, the external diameter of piped parts 8a and backboard 4b, and the external diameter of piped parts 8a and the mutual sealed engagement of housing of the 4a of hollow and annular portion.
According to this structure, when guiding tube used for inserting stomach tube portion 8 was fixed on expansion cuff portion 4, the air-tightness of the inner space 4c of cuff portion also was held.In addition, this guiding tube used for inserting stomach tube portion 8 is because have peristome 8b in the outside of the leading section of expansion cuff portion 4, so be installed under the state of larynx portion in expansion cuff portion 4, use guiding tube used for inserting stomach tube portion 8 to insert stomach tube, can easily arrive the inlet of esophagus by this peristome 8b.
Guiding tube used for inserting stomach tube portion 8 extends roughly the same length from expansion cuff portion 4 with pneumatic duct 6, inserts under the state of larynx portions in expansion cuff portion 4, and the end 8c of opposite side has and can expose in extrabuccal enough length.
In addition, on the tubular part 8a of guiding tube used for inserting stomach tube portion 8, a plurality of rectangular notch zones 14 that have fillet are set at certain intervals, thereby the inside and outside of tubular part 8a can be communicated with.According to this structure, when in piped parts 8a, having inserted stomach tube (not shown), utilize the air of inside of the piped parts 8a of stomach tube extrusion to run away laterally from notch zone 14, therefore, can greatly reduce the insertion impedance of stomach tube.
And this notch zone 14 is not arranged in the zone of tube material 8a by the inside of expansion cuff portion 4.By this structure, invaded the inside of the piped parts 8a of guiding tube used for inserting stomach tube portion 8 even suppose the content that exists in stomach or the esophagus by peristome 8a, it can not invade the inner space 4c of cuff portion yet, even in the trachea.
In addition, as shown in Figures 2 and 3, in the zone of guiding tube used for inserting stomach tube portion 8 by expansion cuff portion 4, guiding tube used for inserting stomach tube portion 8 is extended with the very large curve-like of curvature by rearward end to leading section expansion cuff portion 4, and this curve is only to a direction bending.That is, stomach tube inserts the inflection unanimity (flex point only has a place) of guide portion 8.
For example, under flex point is situation more than two places, the leading section of stomach tube is by first bending, entering second when crooked, contact strongly with the inner face (guide surface) of tubular part 8a, it is big to insert very difficult probability, but by taking the structure as present embodiment, even in zone, can guarantee that also stomach tube inserts smoothly by expansion cuff portion 4.And in the present embodiment, formed the very large curve of curvature, but under the situation that roughly linearity extends, can advance an insertion impedance that reduces stomach tube.
In addition, in the present embodiment, for reducing the inner face of the piped parts 8a in the stomach tube insertion
Friction impedance between (guide surface) and the stomach tube outside takes various frictions to reduce mechanism.For example, with inner face (guide surface) matsurfaceization of piped parts 8a, thus, the contact area between the outside of the inner face (guide surface) of piped parts 8a and stomach tube is reduced, thereby realize the reduction of the insertion impedance of stomach tube.In the present embodiment, mother metal is mixed with the external particles (for example inorganic particulate) of different resin material, by with the molding of external particles co-extruded, thereby realize the matsurfaceization of guide surface.But, be not limited only to this method, also can be with by separating out atomic method or forming by chemical treatment headed by the method for concaveconvex structure, all methods of using other are with the guide surface matsurfaceization.
In addition, be the friction impedance between inner face (guide surface) the stomach function regulating tube outside of reducing piped parts 8a, improve the hardness of guide surface.From the viewpoint that the flatness that makes guide surface improves, preferably the hardness with guide surface is arranged on more than 50 degree with plastics hardness, more preferably is arranged on more than 60 degree, most preferably is arranged on more than 75 degree.And, the durometer hardness (with reference to JIS K7215) of plastics hardness meaning plastics described herein.Piped parts 8a preferably synthetically considers the hardness of guide surface and elasticity as a whole, thus the only specification of determining.
Concrete resin material as the laryngeal mask 2 that constitutes present embodiment, for example, requirement is undertaken under the situation of high-pressure steam sterilization by autoclave, the preferred silicone resin that uses, under the situation that does not need these sterilizations, also can use the soft resin of thermoplasticity of other ethlyene dichloride, polyurethane etc.For example, the expansion cuff portion 4 preferred soft resins that use thin-walled, pneumatic duct 6 preferably uses the resin of hard a little, and stomach tube inserts guide portion 8 can use the resin same with pneumatic duct.As mentioned above, by improving the hardness that stomach tube inserts the guide surface of guide portion 8, the friction impedance in the time of can reducing the stomach tube insertion.
And, can use according to purposes, the behaviour in service of laryngeal mask 2 and (for example have optimum specification, flexibility, hardness, thermostability, acid resistance and resistance to chemical reagents) material, in each parts (expansion cuff portion 4, pneumatic duct 6, stomach tube insert guide portion 8 and gas tube 12) of laryngeal mask 2, can use the resin material of identical type, also can use kinds of materials according to each parts.
In addition, insert guide portion 8 and the mechanism that expansion cuff portion 4 engages, can use bond, also can use deposited (welding), or use other all joint methods as pneumatic duct 6 or stomach tube.
Has the stomach tube of comparing the very little external diameter of difference with the internal diameter that stomach tube inserts the piped parts 8a of guide portion 8 by using reduction stomach tube as above to insert the whole bag of tricks of impedance, can inserting.Particularly, the internal diameter of tubular part 8a can be made as in 1.2 times of external diameter of stomach tube, and then, by determining best specification, also can be located in 1.1 times.
As known from the above, on the basis of the stomach tube that the content that uses size to make effectively to exist in stomach or the esophagus is discharged, reduce the caliber that stomach tube inserts the piped parts 8a of guide portion 8 as much as possible, thereby can increase the caliber of pneumatic duct 6.
(using method of laryngeal mask)
Next, the method for using the laryngeal mask shown in Fig. 1～3 is described.At first, under the state that the 4a of hollow and annular portion shrinks, expansion cuff portion 4 is inserted into the assigned position of larynx portion by throat from mouth.Next, from the supply and exhaust end 12a supply gas that exposes extrabuccal gas tube 12, thereby the 4a of hollow and annular portion is expanded, the open side curved surface 24 of the 4a of hollow and annular portion was close to the air pipe inlet periphery in its full week.Thus, trachea is communicated with the inner space 4c of cuff portion, and can form the state with throat on every side or esophageal areas isolating seal.By above operation, the air flue that can carry out when urgent is guaranteed, for example, connects respirator in exposing on the outconnector 10a of oral cavity of pneumatic duct, thereby can begin the artificial respiration.
And, insert the stomach tube monomer from mouth under the state after the laryngeal mask that will be not used in the special guide portion that stomach tube inserts is installed in larynx portion, because the structural bending between people's oral cavity to the larynx portion anatomically, so be very difficult to operation.
Next, from exposing the end 8c insertion stomach tube that extrabuccal stomach tube inserts guide portion.When stomach tube can be supported by the inner face (guide surface) that stomach tube inserts the tubular part 8a of guide portion 8, by the position of throat and expansion cuff portion 4, and insert by stomach tube guide portion 8 leading section peristome 8b so that enter esophagus.And according to circumstances, the leading section that stomach tube can be inserted into stomach tube is till arriving intraesophageal assigned position or gastric.In the case, stomach tube inserts guide portion 8 and has peristome 8b in the outside of the leading section of expansion cuff portion 4, therefore inserts by stomach tube is inserted guide portion 8 along stomach tube, can easily arrive the inlet of esophagus.
The piped parts 8a that stomach tube inserts guide portion 8 has by the stomach tube that inserts and is used for air with extrusion to the outer notch zone 14 of discharging of pipe as mentioned above, because the hardness height of guide surface, and surperficial by matsurfaceization, so the insertion impedance of stomach tube is lowered.Especially, very likely become in the zone big,,, therefore, prevent that the insertion impedance of stomach tube from becoming big with the curve extension of deep camber and same inflection by expansion cuff portion 4 in the insertion impedance.
By the above, can attract to contain the content (comprising two kinds of solid, liquid) that exists the stomach of gastric juice or the esophagus from the end of the stomach tube that inserts, and to external discharge.Thus, in the use of laryngeal mask, can prevent these contents and invade the cuff inner space 4c of portion and trachea in possible trouble from the contact portion between 4a of hollow and annular portion and the air pipe inlet periphery.
Especially, because the front end of stomach tube is inserted into abundant position away from the larynx portion that expansion cuff portion is installed, therefore can more effectively prevent content intrusion trachea.
And, stomach tube is not set below esophageal orifice inserts guide portion 8, but do not have between esophagus and the stomach as the sweep of oral cavity to larynx portion, therefore,, also stomach tube can be inserted smootherly even without guide portion.
And, structurally, stomach tube can be inserted guide portion 8 and be provided with than the more forward extension of the leading section of expansion cuff portion 4 ground.But if the length of the part of Yan Changing is long forward, the probability that then becomes the obstacle when larynx portion inserts is big.Thereby stomach tube inserts guide portion 8 as above-mentioned embodiment, preferably extend to till the leading section of expansion cuff portion 4, even or hypothesis extend through leading section, after expansion cuff portion 4 was installed by larynx portion, the length that leaves also arrived the top sphincter of gullet.
(of the present invention possess other the explanation of embodiment that stomach tube inserts the laryngeal mask of guide portion)
Next, with reference to Fig. 4, describe possessing other the embodiment that stomach tube of the present invention inserts the laryngeal mask of guide portion.In the present embodiment, compare big difference with the embodiment shown in Fig. 1～3 and be, the piped parts 8a of stomach tube insertion guide portion 8 is configured in the outside of expansion cuff portion 4.In addition, the shape of the notch 14 that is provided with on piped parts 8a is also different.But, basic identical about the embodiment shown in other aspects and Fig. 1～3.
In the present embodiment, piped parts 8a is arranged in the recess that the backboard 4b of expansion cuff portion 4 is provided with and fixes.In addition, the leading section of expansion cuff portion 4 has peristome 8b, is installed under the state of larynx portion in expansion cuff portion 4, and this peristome 8b is provided with the inlet adjoining position that is esophagus.
By above structure, piped parts 8a is not because can outwards fly out from the periphery of expansion cuff portion 4, so do not hinder the anxiety of the insertion of expansion cuff portion 4.
In addition, on piped parts 8a, be provided with the notch 14 of a plurality of circular hole, thereby make the inside and outside connection of tubular part 8a.In the present embodiment, piped parts 8a is arranged on the outside of expansion cuff portion 4, so even in the position of expansion cuff portion 4, also notch zone 14 can be set, thereby when inserting stomach tube, the air of the inside of piped parts 8a is more effectively discharged to the outside.
And in the present embodiment, piped parts 8a all is arranged on the outside of expansion cuff portion 4, but, also can be in the part of expansion cuff portion 4, for example, near the leading section of expansion cuff portion 4, the inside of piped parts 8a by expansion cuff portion 4 is set.
(explanation of the embodiment of other of stomach tube insertion guide portion of the present invention)
Next, other the embodiment that inserts guide portion based on Fig. 5～8 stomach tube pair of the present invention describes.
(explanation of the embodiment of other of notch zone)
At first, based on Fig. 5 other the embodiment that inserts the notch 14 that is provided with on the piped parts 8a of guide portion 8 at stomach tube of the present invention is described.Fig. 5 (a) and (b) all be the axonometric chart of profile of the piped parts 8a of expression stomach tube insertion guide portion 8.Fig. 5 (a) expression is provided with the embodiment in the notch zone 14 of a plurality of slotted hole shapes, does not establish notch zone 14 in the zone of the inside that enters expansion cuff portion.
In addition, Fig. 5 (b) expression is provided with the embodiment of the notch of the slot shape of being cut continuously, does not establish notch zone 14 equally in the zone of the inside that enters expansion cuff portion.In the present embodiment, by this slot that cuts continuously, piped parts 8a is radially easily expanding, and reduces to insert impedance when stomach tube inserts thereby can be implemented in.
And the tubular part 8a of the shape that this slot is cut continuously is the jut by being provided with in extrusion molding processing, can easily make.
(explanation of the embodiment of other of the guide surface of stomach tube insertion guide portion of the present invention)
Next, based on Fig. 6, other the embodiment that stomach tube of the present invention is inserted the guide surface 8d of guide portion 8 describes.Herein, Fig. 6 (a)～(d) is the profile of the section shape of the expression stomach tube piped parts 8a that inserts guide portion 8.
Piped parts 8a shown in Fig. 6 (a) has the irregularly shaped section that is provided with triangle or zigzag fashion concaveconvex structure.Shape thus, can significantly reduce guide surface 8d (inner face of piped parts 8a) and the stomach tube that passes therein between friction area, thus, can reduce significantly and insert impedance when inserting stomach tube.
In addition, can in this recess, be pre-charged with the hydrodynamic lubrication material, thus, can further reduce the friction impedance between stomach tube and the guide surface 8d.And, have the method for the tubular part 8a of the irregularly shaped section that this concaveconvex structure is set as manufacturing, for example, consider to use the extruder of steel wire (ス タ ィ レ シ ト) axle to carry out molding with star.
In addition, the concaveconvex structure shape is not only above-mentioned shape, can also use with all concaveconvex structure shapes headed by the shape of the shape that has fillet, approximate step-like shape or waveform.
In addition, in Fig. 6 (b), have the section with the same concaveconvex structure shape of Fig. 6 (a), also expression continuously or intermittently notch 14 be set up part.
Next, in the embodiment shown in Fig. 6 (c), radially has a double-layer structure at tubular part 8a.According to this structure, can use the different material of material, elasticity, hardness and surface configuration at outside diameter and internal side diameter, therefore, can select only combination according to various situations.For example, as the parts of internal side diameter, by the higher material of use hardness ratio, the friction impedance between reduction and the stomach tube, as the parts of outside diameter, by using material more full of elasticity, the impedance when expansion cuff portion is inserted reduces.In addition, even carry out matsurfaceization or improve under the situation of processing of hardness, can more effectively carry out this processing on the enterprising surface of being about to of the layer of internal side diameter with guide surface 8d.
In addition, in Fig. 6 (d), have the section with the concaveconvex structure shape of the same double-layer structure of Fig. 6 (c), also expression continuously or intermittently notch 14 be set up part.
(explanation that does not have the stomach tube of tubular part to insert the embodiment of guide portion)
Next, based on Fig. 7 and Fig. 8, the embodiment that the stomach tube that does not have tubular part is inserted guide portion 8 describes.
At first, illustrate that the stomach tube that does not have tubular part shown in Figure 7 inserts an embodiment of guide portion.Herein, Fig. 7 (a) is the axonometric chart of expression laryngeal mask integral body, and Fig. 7 (b) is the profile that the arrow D from Fig. 7 (a) watches, and Fig. 7 (c) is the profile of watching from the arrow E of (a).
Shown in Fig. 7 (a), in the present embodiment, stomach tube inserts guide portion 8 does not have piped parts, replaces, and is provided for the recess that stomach tube inserts in the outside of expansion cuff portion 4 and the outside of pneumatic duct 6.This recess is provided with continuously along the direction of insertion of stomach tube, and guide surface 8d forms between the end of the leading section of expansion cuff portion 4 and pneumatic duct continuously.
About the shape of the guide surface 8d that forms by this recess, the shape of the guide surface 8d in expansion cuff portion 4 is shown in Fig. 7 (b), and the shape of the guide surface 8d on pneumatic duct 6 is shown in Fig. 7 (c).No matter be which kind of situation, when inserting stomach tube, the stomach tube not appearance from expansion cuff portion 4 or pneumatic duct 6 is outstanding, therefore can insert the few insertion smoothly of impedance.
Next, based on Fig. 8, other the embodiment that the stomach tube that does not have tubular part is inserted guide portion describes.Fig. 8 be generally represent to expand (with reference to Fig. 8 (a)) in the cuff portion, and pneumatic duct on the configuration of guide surface 8d of (with reference to Fig. 8 (b)).In the present embodiment, two independently the guide surface 8d backboard 4b that is arranged on expansion cuff portion 4 go up and the outside of pneumatic duct 6 on.
In the present embodiment, when inserting stomach tube, stomach tube exposes outside the appearance of expansion cuff portion 4 or pneumatic duct 6, but by suitably determining the installation site of guide surface 8d, the level and smooth insertion of can realize expanding cuff portion or stomach tube.
And,, on the direction of insertion of stomach tube, promptly can also can possess guide surface 8d intermittently continuously about Fig. 7 and embodiment shown in Figure 8.
(embodiments of other of the laryngeal mask that possesses guiding tube used for inserting stomach tube portion of the present invention)
In the laryngeal mask that possesses guiding tube used for inserting stomach tube portion of the present invention, not only comprise above-mentioned embodiment, also comprise other various embodiments.
Claims (8)
1. laryngeal mask that is used to guarantee the ventilation and the breathing of lung possesses:
(1) expansion cuff portion, it has by the backboard that engages airtightly to the expandable hollow and annular of inner blanketing gas portion, with the mode of the end of the spatial side of internal side diameter that covers described hollow and annular portion and described hollow and annular portion, and is surrounded by the inner face of the internal side diameter curved surface of described hollow and annular portion and described backboard and in the inner space of the opposition side opening of described backboard
After mouth inserted larynx portion, the open side curved surface of expansible described hollow and annular portion can wholely around be close to the air pipe inlet periphery in described expansion cuff portion;
(2) pneumatic duct, this pneumatic duct is connected with described expansion cuff portion, the end of one side of described pneumatic duct is at the inner space opening of described cuff portion, inserts under the state of larynx portion in described expansion cuff portion, and the end of described pneumatic duct opposite side is at extrabuccal space opening;
(3) stomach tube inserts guide portion, it has in described expansion cuff portion and is inserted under the state of larynx portion, between outside the described expansion cuff portion of larynx portion and oral cavity continuously or the guide surface that is provided with intermittently, the insertion of described guide surface guiding stomach tube, so that make the leading section of stomach tube arrive the zone of stomach or esophagus from mouth
Wherein, described stomach tube inserts guide portion and has piped parts, and its inner face becomes described guide surface, on the part at least of described piped parts, is provided with continuously or intermittently along its length and makes the notch zone that can ventilate inside and outside the pipe.
2. laryngeal mask as claimed in claim 1, wherein, in the zone by described expansion cuff portion, described stomach tube inserts guide portion and roughly extends on linearity ground, and perhaps curvature is extended invariably, or has and sentence interior flex point and extend.
3. laryngeal mask as claimed in claim 1 wherein, is mounted under the state of larynx portion in described expansion cuff portion, is provided with described guide surface at the leading section near the described expansion cuff portion of esophagus inlet.
4. laryngeal mask as claimed in claim 1 wherein, is the contact area between the outer surface that reduces described guide surface and described stomach tube, is provided with concaveconvex structure on described guide surface.
5. laryngeal mask as claimed in claim 1 wherein, is the contact area between the outer surface that reduces described guide surface and described stomach tube, and described guide surface is by matsurfaceization.
6. laryngeal mask as claimed in claim 1, wherein, the hardness of described guide surface is more than plastics hardness 60 degree.
7. laryngeal mask as claimed in claim 1, wherein, the space of the inboard of described tubular part and described cuff portion inner space are in the gas-tight seal state.
8. laryngeal mask as claimed in claim 1, wherein, the internal diameter of described piped parts is in 1.2 times of the external diameter of described stomach tube.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006175505 | 2006-06-26 | ||
| JP2006-175505 | 2006-06-26 | ||
| JP2006175505 | 2006-06-26 |
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| CN101057994A CN101057994A (en) | 2007-10-24 |
| CN101057994B true CN101057994B (en) | 2011-09-14 |
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| CN 200710102366 Expired - Fee Related CN101057994B (en) | 2006-06-26 | 2007-04-30 | Laryngeal mask with guiding tube used for inserting stomach tube |
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| JP (1) | JP4588789B2 (en) |
| CN (1) | CN101057994B (en) |
| WO (1) | WO2008001724A1 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11077271B2 (en) | 2005-03-25 | 2021-08-03 | Airguard, Llc | Medical apparatus with hypopharyngeal suctioning capability |
| GB0810446D0 (en) | 2008-06-06 | 2008-07-09 | Laryngeal Mask Company The Ltd | Laryngosocpe |
| GB0903654D0 (en) * | 2009-03-03 | 2009-04-15 | Laryngeal Mask Company The Ltd | Artificial airway device |
| WO2010115232A1 (en) * | 2009-04-08 | 2010-10-14 | Baska, Meenakshi | Improvements to a laryngeal mask |
| EP2451516B1 (en) * | 2009-07-06 | 2018-12-19 | Teleflex Life Sciences Unlimited Company | Artificial airway |
| WO2011017756A1 (en) | 2009-08-13 | 2011-02-17 | Ultimate Medical Pty. Ltd. | Pressure indicator |
| GB201014773D0 (en) * | 2010-09-06 | 2010-10-20 | Laryngeal Mask Company The Ltd | Laryngeal mask airway device |
| GB201016562D0 (en) * | 2010-10-01 | 2010-11-17 | Laryngeal Mask Company The Ltd | Artificial airway device |
| CA3021966A1 (en) * | 2010-10-15 | 2012-04-19 | Teleflex Life Sciences Unlimited Company | Artificial airway device |
| ES2694800T3 (en) | 2010-11-12 | 2018-12-27 | Wolfe Tory Medical, Inc. | Sprayer for nasal therapy |
| CN109200416A (en) | 2011-02-02 | 2019-01-15 | 梅田有限公司 | improved artificial airway |
| GB2489258A (en) * | 2011-03-22 | 2012-09-26 | Donald Munro Miller | Supra-laryngeal device which seals against the pharynx |
| GB201120628D0 (en) * | 2011-11-30 | 2012-01-11 | Laryngeal Mask Company The Ltd | Endoscopy device |
| CH706616A2 (en) * | 2012-06-04 | 2013-12-13 | Deltona Innovations Ag | Laryngeal mask with a supraglottic tube. |
| CN102727978B (en) * | 2012-07-23 | 2015-03-25 | 杭州富善医疗器械有限公司 | Laryngeal mask convenient for guiding insertion device into stomach |
| US10149955B2 (en) | 2013-06-20 | 2018-12-11 | Ambu A/S | Laryngeal mask |
| ES2609119T3 (en) | 2013-06-20 | 2017-04-18 | Ambu A/S | Laryngeal mask |
| GB201314631D0 (en) | 2013-08-15 | 2013-10-02 | Teleflex Life Sciences | Endoscopy device |
| WO2016117462A1 (en) * | 2015-01-22 | 2016-07-28 | テルモ株式会社 | Tracheal tube |
| CN105251091B (en) * | 2015-11-25 | 2017-11-10 | 广州维力医疗器械股份有限公司 | A kind of laryngeal mask air-breather |
| KR101858596B1 (en) * | 2016-09-22 | 2018-05-17 | 한양대학교 산학협력단 | Airway apparatus for guiding intubation |
| KR101901142B1 (en) * | 2017-02-13 | 2018-09-21 | 연세대학교 산학협력단 | Tube for endotracheal intubation with levin tube insertion guider |
| AU201714823S (en) | 2017-02-27 | 2017-10-12 | Teleflex Life Sciences Unlimited Co | Laryngeal mask airway device |
| JP6796558B2 (en) * | 2017-06-30 | 2020-12-09 | 美智義 讃岐 | Airway |
| CN111587134B (en) * | 2018-01-12 | 2023-06-23 | 纳林尼·瓦迪维鲁 | Medical device with laryngopharynx suction capability |
| CN108671346A (en) * | 2018-05-24 | 2018-10-19 | 无锡圣诺亚科技有限公司 | Position suction sputum laryngeal mask |
| WO2022133525A1 (en) * | 2020-12-23 | 2022-06-30 | Genesis Airway Innovations Pty Ltd | Artificial airway device, system, and method of use thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2238657Y (en) * | 1995-12-07 | 1996-10-30 | 中国人民解放军第二○二医院 | Esophagus blocking type laryngeal cover |
| CN1502381A (en) * | 2002-11-26 | 2004-06-09 | 中国医学科学院中国协和医科大学整形 | Esophageal obstruction type ventilation pipe of larynx cover |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351330A (en) * | 1978-01-30 | 1982-09-28 | Scarberry Eugene N | Emergency internal defibrillation |
| GB2229367A (en) * | 1989-03-22 | 1990-09-26 | Archibald Ian Jeremy Brain | Artificial airway device |
| US5241956A (en) * | 1992-05-21 | 1993-09-07 | Brain Archibald Ian Jeremy | Laryngeal mask airway with concentric drainage of oesophagus discharge |
| MY138519A (en) * | 1995-10-03 | 2009-06-30 | Indian Ocean Medical Inc | Artificial airway device |
-
2007
- 2007-04-30 CN CN 200710102366 patent/CN101057994B/en not_active Expired - Fee Related
- 2007-06-25 JP JP2008522567A patent/JP4588789B2/en active Active
- 2007-06-25 WO PCT/JP2007/062703 patent/WO2008001724A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2238657Y (en) * | 1995-12-07 | 1996-10-30 | 中国人民解放军第二○二医院 | Esophagus blocking type laryngeal cover |
| CN1502381A (en) * | 2002-11-26 | 2004-06-09 | 中国医学科学院中国协和医科大学整形 | Esophageal obstruction type ventilation pipe of larynx cover |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平2-283378A 1990.11.20 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008001724A1 (en) | 2008-01-03 |
| JP4588789B2 (en) | 2010-12-01 |
| CN101057994A (en) | 2007-10-24 |
| JPWO2008001724A1 (en) | 2009-11-26 |
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