JP3503730B2 - Emergency Resuscitation Esophageal Airway - Google Patents

Description

Description: BACKGROUND OF THE INVENTION This invention is necessary for patient breathing.
The present invention relates to an airway used to secure a safe airway. More details
Without using an endotracheal tube or facial mask
During anesthesia, in a comatose state, or on their own to secure the airway
Patients who are powerless and difficult to keep the upper airway open (muscles
A patient with asthenia and paralysis)
Inhalation or exhalation of air or oxygen or anesthetic gas into tubes and lungs
Do you have an easy airway (airway) from the mouth to the pharynx?
As well as intermittent through it if necessary
Medical airway to enable automatic pressurized ventilation
It relates to a securing device. Conventionally, for anesthesia, emergency resuscitation, or severe
As a medical device for airway management for patient management,
Intraductal tube, oral nasal airway, esophageal-tracheal air
Ay, Lalingueal Mask (LM), esophageal closed air
Air (EOA), airway with esophageal gastric tube (EGT)
A). Patients with endotracheal tube orally or nasally
Inserted into the trachea of the anesthesia machine, ventilator, resuscitation
If connected to a vessel, the airway is secured and suction in the trachea is also possible.
Easy to do as appropriate, and reflux from the stomach and esophagus is isolated from the respiratory tract
In addition, pressurized artificial respiration can be performed without problems if necessary.
So it has been most widely used. However, this method is an emergency for the purpose of emergency lifesaving.
At times, if you try to do it reliably, you will feel the larynx deployment under direct vision.
Intubation is difficult because of the occurrence of arrhythmia, regurgitation of stomach contents, etc.
Prone to serious complications, high risk, and invasive
A doctor who is skilled in this operation and has a high degree of medical practice
However, depending on the environment, patient position, etc.
Things that are difficult to do easily, and the larynx and subtleties that are more reflective
The villous epithelium inside the trachea with the endotracheal tube and its cuff
By squeezing and stimulating later, foreign body sensation, wrinkle difficulty etc.
Causing side effects, and more serious such as glottic edema and tracheitis
High risk of complications is a major drawback
The larynx and trachea for the purpose of securing the airway for ventilation
I want to avoid putting foreign objects inside
Has become a medically urgent need. That is, endotracheal interpolation
The tube is unavoidable if necessary, such as thoracotomy and upper neck surgery
The only thing you really want to do is replace the endotracheal tube
If you have a reliable way to do this, you have never had this. On the other hand, oral airways and nasal airways
Widely used for many years, but just beyond the inserted airway
The tongue is mechanically supported at the end, and the airway is closed by its sinking.
It is intended to help prevent clogging and
Because it can not support the edge, it is often not useful enough,
In addition, backflow from the esophagus to the trachea cannot be prevented, and further artificial respiration is performed.
It is required to hold the face mask tightly by hand
Is a major drawback, and the range of cases that can be used
The available time is also generally limited. However, endotracheal chi
Only doctors who are proficient in handling such as tubes
In addition, it is important that nurses and emergency personnel can use it widely.
Is a point. [0006] In addition, whether intubated into the esophagus or trachea
A device that can ventilate by selecting the air supply route
Japanese Patent Laid-Open No. 5-269204, USP 468856
8, disclosed in Japanese Patent Laid-Open No. 7-213614 and put into practical use
Has been. This device is inserted into either the esophagus or trachea.
If you can confirm the insertion location, select the air route.
Ventilation is possible, but the confirmation is incorrect and the air supply route is incorrect.
If this happens, it will be impossible to ventilate, so insert it into the esophagus or trachea.
It is necessary to quickly and accurately check and diagnose whether
become. Also, like the endotracheal tube, it was inserted into the trachea
If this is the case, serious complications are likely to occur.
It may be difficult to do unless you are a skilled doctor.
In Japan, a paramedic has secured an airway for patients with cardiopulmonary arrest
This device is used as a tool for emergency, but it is a paramedic
The fact is that ventilation in the trachea is not permitted
The Also, when inserting into the esophagus, the length should be
Since it is tailored to the Kibe, do not reach the deep part of the esophagus
In addition, the material is inherently hard so that it can be easily inserted into the trachea.
Since it has an arcuate curve to the tip,
Rejuvenation with closed chest massage is easy
It is particularly dangerous. Furthermore, Dr. Brain from London, UK
Invented (British Patent No. 2,111,394), made of rubber
A cushion (mask) is attached to the tip of a large-diameter arcuate tube.
Laryngeal mask (L
M) has also been introduced in Japan in recent years for anesthesia and rescue.
Used for emergency resuscitation. In Japan, 1983 Br.
J. et al. Anaesth. Brain's Layn in
A paper entitled geal mask, 1989 academic journal
It became known by the introduction of Aman et al.
Therefore, the liquid accumulated in the mask area is sucked or
An invention with a device for discharging to the outside by the phone system is disclosed in JP
This is disclosed in Japanese Patent Application Laid-Open No. 2-283378.
It is not yet commercially available. When LM is used, a foreign object is inserted into the trachea.
If it is inserted correctly, the prone position will be removed.
Convenient for general anesthesia under spontaneous breathing and no postoperative complications
It can be used with peace of mind and is attracting attention all over the world. Disadvantage
If it is inserted without spontaneous breathing, immediately
It is impossible to judge whether the position is appropriate or not.
The direction (mask) is required, but the correct position
It is not always easy to calm down, and the patient's body
Cushion (mask) shifts when changing position or transporting
On the other hand, a cushion (mask) that swells greatly on the airway
There is a risk of blocking. Also, cushion (ma
There isn't enough pressure to press her
When performing pressurized artificial respiration, airway pressure above a certain level (about
20cmH2O or more) gas around the cushion
If there is a leak and it is difficult to perform sufficient pressurized ventilation,
Since the esophagus is not sufficiently closed, regurgitation of the stomach contents and
Inflow into the pipe (misingestion) is inevitable. Japan
So not only doctors but also nurses and paramedics can use LM
However, for emergency resuscitation, it is limited to pressurization of positive pressure ventilation
It is difficult to determine the correct insertion depth and position.
Misalignment during transportation in an emergency site or ambulance
Sometimes occurred. Furthermore, the larynx is deployed as in endotracheal intubation.
There is no need to insert it quickly and blindly into the esophagus.
Inflate a balloon near the tip of the esophagus in the esophagus
In close contact with the wall of the esophagus
The lower part of the esophagus is obstructed with the tip of the tube, and the gastric content is refluxed.
To prevent airtightness and prevent gas from the side holes of the tube.
Squeeze into the upper esophagus and push into the larynx and trachea
Esophageal closed airway (EOA) for artificial respiration
And the tip of the tube is opened so that the stomach contents can be removed.
The ventilation gas can be sucked from
Go through the nose and through the outer circumference of the tube to the esophagus → larynx → trachea
Airway (EGTA) with esophageal stomach tube to go through
Widely used for paramedic. However, this is a facial mask simultaneously with artificial respiration.
If you do not hold it tightly on the patient's face with both hands,
There is not enough pressure ventilation in the ambulance while driving
There was a drawback that it could not be done. Recently the strap
It is attached to the disc to improve the adhesion with the face. Also,
Structurally, compared with endotracheal tube, laringeal mask, etc.
Then, because there are many dead spaces of ventilation gas, carbon dioxide from the patient
It has been pointed out that it is difficult to discharge. Also, these lacks of esophageal closed airways
The device that improved the point and replaced the mask with a pharyngeal balloon
JP-A-6-142205, Japanese Patent Application No. 7-17743
No. 6 is disclosed. These require fixing the mask
In addition, the dead space is considerably improved because it is less than the mask type.
The operability is also improved. But the tube cross section is circular
Therefore, there is a possibility that the tube is accidentally inserted into the trachea.
It was. Furthermore, in any medical airway securing device
However, due to differences in target patients (size),
The actual situation is that we have a product lineup of
It is necessary to prepare multiple sizes suitable for the target patient at the site.
Become. Especially in emergency medical settings, the space for storing medical devices.
There is a limited number of
There is a point. The present invention is based on the above situation.
It was made in view of the above, and it is not necessary to insert it into the trachea.
Can be used by inserting into the road, no need to use a facial mask
Maintain good airtightness in both gastric and oral directions
The insertion depth can be adjusted while the tube is inserted into the trachea.
Pressurized artificial call easily, quickly and reliably
Can be resuscitated by sucking, and it is wide with fewer types
An esophageal airway for emergency resuscitation that can accommodate patients
The purpose is to do. Means for Solving the Problem The suction curve is curved in an arcuate shape.
Two lumens of the first balloon inflation lumen
A suction tube with a bow and an arcuate curved tube.
Lub sliding lumen, respiratory gas distribution lumen, second bar
Breathing channel with three lumens, rune inflation lumen
Provided on the tube and the periphery near the tip of the suction tube
A first balloon for closing the created esophagus and the suction
Second to close the pharynx on the tube periphery
The balloon, the first balloon and the second balloon
A first balloon inflation tube for inflating each; and
Second balloon inflation tube and the breathing tube
Connected to the proximal end of the respiratory gas flow lumen
Respiratory Gas Distribution Chu with a Respiratory Gas Distribution Lumen
The suction tube is open at the base end side.
At the tip, a lumen other than the balloon inflation route is opened.
The breathing tube is open on the proximal end side.
The tip is a lumen other than the balloon inflation route.
Is opened, and the suction tube slide lumen has a suction channel.
The tube passes and is airtight and slidable in the longitudinal direction.
And a breathing gas flow through the breathing tube
The respiratory gas flow tube of the lumen is connected
One end on the non-side is the first balloon and the second balloon
Between the first valve and the first valve.
The expansion tube is on the proximal end side of the suction tube.
Connected to, through, and through the first balloon inflation lumen; and
The first balloon inflation lumen has a first valve
The second balloon inflation.
The tension tube is a second bar on the proximal end side of the breathing tube.
Connect, run through, and second balloon inflation for rune inflation
The lumen for opening in the second balloon;
Furthermore, the tip side of the first balloon of the breathing tube is
It is not curved, extends straight, and its end face is
It is formed by cutting diagonally so that the tip is on the outer circumference side of the curve.
And the second balloon is a first balloon.
Compared to the longitudinal and width directions, from the deep oral cavity to the nasopharyngeal cavity
Specially inflates to close the lumen
This is the airway in the esophagus for emergency resuscitation. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
Explained. FIG. 1 shows an embodiment of the present invention for emergency resuscitation.
The airway in the esophagus is shown, (a) is in the basic state
Side view, (b) is AA 'sectional view, (c) is BB' section
FIG. 4D is a sectional view taken along the line CC ′. Also, FIG.
Internal details of the connector connected to the branch tube (22)
FIG. FIG. 3 shows the first balloon for the basic state.
It is a figure which shows the state which closely approached the space | interval of a 2nd balloon.
FIG. 4 is a diagram showing a separated state. From FIG. 1, is the breathing tube (1) an oral cavity?
Is a bowed tube inserted into the upper esophagus.
In some cases, the cross-sectional shape may be elliptical.
The The esophagus is originally flat back and forth, and back and forth if necessary
Since it stretches into a cylinder, a flat oval tube on the side
It can be said that it makes sense. In addition, FIG.
As shown in (c), suction tube sliding lumen
(2), respiratory gas distribution lumen (3), second balloon
It has three lumens (4)
The cross-sectional shape of these lumens may be elliptical as the case may be.
There is also. The suction tube sliding lumen (2) is the proximal end
Both the head and tip are open, from the oral cavity to the esophagus
The suction tube (5) to be inserted passes through in a slidable state.
In order to maintain airtightness,
A ring-shaped valve member may be attached to the part. Breathing
The distribution lumen (3) has a first balloon on the tip side.
A suction tube between (6) and the second balloon (7)
(5) From the breathing gas distribution port (8) on the curved center side
The breathing gas distribution port is shown in Fig. 1 (a).
Smoothly when inserted into the patient
The tip is cut diagonally so that it can be inserted. Breathing
The proximal end of the gas flow lumen (3) is breathing gas flow
Respiratory gas distribution tube (1) with a lumen (9)
0), and a breathing gas distribution tube (1)
0) In order to connect a resuscitator directly to the rear end side,
Usually a plastic connector (11)
Diameter 15mm, taper 1/40)
It is attached. Connected to the ventilation connector (11)
Inhaled air sent from the resuscitator is a breathing gas distribution tube
Respiratory gas circulation lumen (9) to breathing tube
Pass through the respiratory gas flow lumen (3) of (1)
Breathing between the balloon (6) and the second balloon (7)
It is sent into the trachea through the gas distribution port (8).
Respired gas from the breathing gas distribution port (8) as air
It is sent to the resuscitator from the distribution lumen (3) (9). First
No. 2 balloon inflation lumen (4) has three
With stopcock (12) and pilot balloon (13)
A second balloon inflation tube (14) is connected and
The end side is sealed, and the air injected from the three-way stopcock (12)
Pass through the second balloon inflation lumen (4) and breathe
To close the pharynx attached to the tube (1)
2 through the side hole opening in the balloon (7).
It is discharged into the rune (7). The suction tube (5) extends from the oral cavity to the esophagus.
An arcuately curved tube that is inserted
As shown in FIG. 1B, the cross-sectional shape is elliptical,
The shape may be long in the direction. The esophagus was originally
It ’s flat, and if necessary, it ’s stretched back and forth to form a cylinder.
It makes sense to put a flat oval tube next to it
It can be said that. In addition, as shown in FIG.
Lumen (15), first balloon inflation lumen (1
6) having two lumens, and any lumen cross section
In some cases, the shape may be elliptical. Food
The tip (17) is curved to facilitate insertion into the road
It extends straight, and its tip is curved at the tip.
It is formed diagonally so as to come to the outer peripheral side, and the tip part
(17) The first balloon to close the esophagus adjacent to
(6) is attached. Lumen for suction (1
5) is open for both suction and suction
The connector (18) is connected to the proximal end of the tube (5).
It has been continued. Attach a suction device to the connector (18)
To inhale and exhaust gastric and esophageal contents and gas.
It can be carried out. First balloon inflation lumen (1
6) One side valve (19) and pilot valve on the base end side
First balloon inflation tube (2)
1) is connected, the tip side is sealed, and the one-way valve (19)
The air injected from the first balloon inflation lumen (1
Side passing through 6) and opening into the first balloon (6)
It flows out of the hole into the first balloon (6). Respiratory tube (1) Connected to proximal end
The breathing gas flow tube (10) includes the breathing gas flow.
A medical tube that branches and communicates with the universal lumen (9)
The branch tube (22) for inserting the endoscope is connected.
Connector on the proximal end of the branch tube (22)
(23) is connected. Figure 2 shows one of the connectors (23)
It is an internal detail drawing of an Example, (a) is a medical tube or
Endoscope is not inserted, (b) is inserted
FIG. Connector (2
3) When a medical tube or endoscope is inserted inside,
To maintain airtightness between the lumen of the branch tube (22) and the outside
Phosphorus made of soft resin such as silicon rubber
A gas-tight air-tight valve (24) is constructed.
The branch tube (22)
There is a gate valve (25) that separates the lumen from the outside
If a medical tube or endoscope is not inserted,
The partition is maintained with a ring, etc.
When inserting a tube or an endoscope, the structure is pushed open.
The spring is preferably made of stainless steel that does not rust,
The partition is in the respiratory gas flow lumen (3) (9)
Having a spring constant that can be maintained under pressure fluctuations
And Branch tube (22), connector (23)
By being provided, when inserting the present invention into a patient,
Pass the endoscope through the connector (23)
Endoscope near breathing gas distribution port (8) via Men (3)
In the pharynx of the present invention under the endoscope by taking out the tip
It is possible to grasp the position state or injury in the pharynx.
During or after insertion of the present invention, the branch tube (2
2) Insert a medical suction tube in the same way as an endoscope.
It is possible to suck and remove dirt etc. near the entrance of the trachea
It becomes ability. Second balloon of breathing tube (1)
(7) On the base end side, hard rubber or soft vinyl chloride
Cylindrical synthetic resin such as Nyl resin or polyethylene resin
A bite block (26) is provided to affect the present invention.
Tube for patient teeth when inserted into the patient
(1) It has a function to prevent the main body from being damaged. Respiratory tube (1), suction tube
(5) is formed with a length and thickness suitable for the patient's physique.
It has moderate flexibility and elasticity at normal room temperature and body temperature.
As a forming material, usually a synthetic resin such as soft vinyl chloride is used.
Nyl resin, silicone rubber, polyurethane, etc.
Used. The tip (17) is flush with the suction tube (5).
It is usually formed by the body, but it is a plug-like part that is a separate member.
In this case, the material is suction tube (5)
It may be different from the forming material. Also for breathing
Tube slide lumen for suction inside tube (1) (2)
And the contact surface of the suction tube (5) sliding inside
The suction tube ensures smooth sliding
(5) Outer surface and suction tube sliding lumen (2)
Matte the inner surface to reduce mutual frictional resistance
Or lubricate with silicone oil or glycerin aqueous solution
It is desirable to apply as an agent. A first balloon inflation tube (21);
The second balloon inflation tube (14) is an example of a synthetic resin.
For example, soft vinyl chloride resin, silicone rubber, polyurethane
It is formed with a small diameter using polyethylene or polyethylene. Them
The end of the balloon is inflated by the injected air.
Pilot balloon (20), (1 for confirmation outside the body
3) is provided. Pilot balloon forming material
Is usually a synthetic resin such as soft vinyl chloride resin or silicone.
Rubber, polyurethane, polyethylene, polyester
Etc. are suitable. In addition, the air injected at their ends
Prevent backflow, such as a check valve, stopcock or
A stopcock is attached. Example FIG. 1 shows a small capacity.
On the first balloon (6) side, there is a one-way valve (19)
Addition and deaeration of air on the second balloon (7) side
Three-way stopcock (12) so that it can be operated without removing the syringe
Attached is shown. Formed at the tip of the breathing tube (1)
The breathing gas distribution port (8) has a first balloon (6), and
The second balloon (7) is inflated to the esophagus and throat, respectively
These first balloons (6) when the head is hermetically closed
Open in the space inside the esophagus between the wing and the second balloon (7)
I will speak. Therefore, the airway in the esophagus for emergency resuscitation
The mouth so that the larynx is located between the two balloons
Respiratory gas distribution port because it is inserted into the esophagus through the cavity
(8) is just near the position where it is inserted into the pharynx from the upper part of the esophagus
Although provided, it does not necessarily have to be close. ing. Ma
Part of the breathing gas distribution port (8) hits the esophageal wall.
Respiratory gas flow without resistance even if it is clogged with mucus
An elliptical shape that is usually flat in the longitudinal direction so that the passage is secured
And an appropriate size. The first balloon (6) is airtight in the lower part of the esophagus
In order to improve airtightness, it is elastic like rubber
For example, natural rubber, isoprene rubber, silicone rubber
Synthesis of rubber, urethane rubber, ethylene-propylene rubber, etc.
Synthetic resins such as rubber and other soft vinyl chloride resins
It is formed into a cylindrical shape using a lastmer. Also its membrane
The wall of the breathing tube when inserting without internal pressure
It is important not to interfere with insertion into the esophagus
It is. The second balloon (7) extends from the upper pharynx to the oral cavity
This part is hermetically closed along the wall.
When this is inflated, it follows the complex shape of the pharynx
It is not tightly pressed against the wall
Like synthetic resins such as polyethylene and polyester
, Soft vinyl chloride resin, silicone resin, polyurethane
It is formed into a cylindrical shape using a relatively soft resin such as
The When the second balloon (7) is inflated,
To avoid damaging the tissue of the pharyngeal wall by squeezing the head wall strongly,
Material with less rubber elasticity than the first balloon (6)
Because it is formed with intermittent artificial pressure up to its internal pressure
The inside of this soft and large balloon when breathing
The balloon is deformed so that the pressure does not lose to the positive pressure in the airway.
Slightly distorted every time positive pressure of intermittent ventilation reaches a peak
Gas does not leak but does not slip. Therefore, airtightness and firmness
The second balloon (7) is attached to the first
Swells longer in the longitudinal and lateral directions than the rune (6)
It is formed as follows. Second balloon (7) and breathing chi
The volume of space between tubes (1) is the second balloon inflation
Capacity determined by the physique from the tube (14)
When air was injected at a pressure of 20-40 cmH2O,
The size is just full. Limited
The pressure injected into the second balloon (7), though not
The amount of air with a force of 20-40cmH2O
50-150ml for children, 30-60 for children
ml. The present invention is based on the breathing tube (1).
In addition, the suction tube (5) slides to
Change the distance between the rune (6) and the second balloon (7) arbitrarily
The point that can be changed is the biggest feature.
Against the first balloon (6) and the second balloon (7)
FIG. 4 shows the basic state of FIG.
The distance between the first balloon (6) and the second balloon (7)
Indicates the released state. Inserting the first balloon (6) into the patient
The fixed position after entering is to compress the trachea when the balloon is inflated
Not to be below the tracheal bifurcation, and
When one balloon (6) is inserted into the stomach, the esophagus is closed
It must be above the gastric cardia, as no chain is possible.
It becomes important. However, even if actual patients are limited to adults,
Because there is a great individual difference in the distance between the branch of the tube and the gastric cardia,
Usually, when preparing sizes for adults, 2-4 types
Is needed. Therefore, the first valve which is a feature of the present invention.
Arbitrarily change the distance between the balloon (6) and the second balloon (7)
If the function that can be used, the distance between the tracheal bifurcation and the gastric cardia
One type of size can be used for variations. Figure
When 1 is used for a standard size patient, FIG.
Is for use with small patients, Figure 4 is for use with large patients
It becomes. Respiratory tube (1) and suction tube
The relative position of (5), ie the first balloon (6) and the second
The distance between the balloons (7) is the base of the suction tube (5).
Positioning mark (27) on end side for printing and other means
Even if the present invention is inserted into a patient,
We shall be able to understand more. In addition, the breathing tube (1) and the suction tube
After the relative position of the tube (5) is determined, these tubes
The proximal end of the breathing tube (1)
Position fixing means such as a clamp may be provided on the side. The airway for esophagus for emergency resuscitation according to the present invention is provided.
By using it, there is no need to insert it into the trachea.
If the probe is oblong and oblong, it will be accidentally inserted into the larynx
Can be easily inserted from the oral cavity to the esophagus,
Selectively inflates the balloon, lower part closes the esophagus, upper part
Ventilate the throat by closing the mouth and nasal passages.
Yes, yet it can handle a wide range of patients with a small size
In the vicinity of the larynx with the endoscope inserted and attached to the patient
Dirty suction is possible, and it is safer, more reliable, and easier to use
Easy to insert artificial respiration gas for emergency use
It is extremely useful as a distribution tool.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an airway for emergency resuscitation esophagus according to one embodiment of the present invention, (a) is a side view in a basic state, (b) is a cross-sectional view along AA ′, (C) is a BB ′ cross-sectional view, (d) is C
It is -C 'sectional drawing. FIGS. 2A and 2B are internal detail views of a connector connected to a branch tube, and FIG. 2A shows the internal details of a state where a medical tube and an endoscope are not inserted, and FIG. FIG. FIG. 3 shows a first balloon and a second balloon with respect to the basic state of FIG.
This is a state in which the balloons are closely spaced. 4 shows a first balloon and a second balloon with respect to the basic state of FIG.
This is a state where the intervals of the balloons are separated. DESCRIPTION OF SYMBOLS 1 Respiratory tube 2 Suction tube sliding lumen 3 Respiratory gas flow lumen 4 Second balloon inflation lumen 5 Suction tube 6 First balloon 7 Second balloon 8 Respiratory gas flow port DESCRIPTION OF SYMBOLS 9 Respiratory gas distribution lumen 10 Respiratory gas distribution tube 11 Connector 12 Three-way cock 13 Pilot balloon 14 Second balloon inflation tube 15 Suction lumen 16 First balloon inflation lumen 17 Tip 18 Connector 19 One valve 20 Pilot Balloon 21 First balloon inflation tube 22 Branch tube 23 Connector 24 Airtight valve 25 Gate valve 26 Bit block 27 Positioning mark

──────────────────────────────────────────────────── ----- Continuation of the front page (56) References JP 5-269204 (JP, A) JP 6-142205 (JP, A) JP 59-62059 (JP, A) JP 58- 159761 (JP, A) JP 61-13973 (JP, A) JP 7-213614 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61M 16/04

Claims (1)

(57) [Claims] [Claims] [Claim 1] A tube for suction having two lumens of an arcuate and suction lumen and a first balloon inflating lumen, and an arcuate and curved tube A breathing tube having three lumens, a tube sliding lumen, a respiratory gas flow lumen, and a second balloon inflation lumen, and a first esophagus for closing the esophagus provided at the periphery near the tip of the suction tube A first balloon, and a second balloon for closing the pharynx provided on the periphery of the suction tube;
A first balloon inflation tube and a second balloon inflation tube for inflating the first balloon and the second balloon, respectively, and a proximal end side of a respiratory gas flow lumen of the breathing tube; It consists of a breathing gas distribution tube that is connected and has one respiratory gas distribution lumen,
The suction tube has a proximal end side opened, and the distal end has a lumen other than the balloon inflation route opened.
In addition, the breathing tube is opened at the base end side, the distal end is opened with a lumen other than the balloon inflation route, the suction tube sliding lumen is passed through the suction tube,
Has a structure that is airtight and slidable in the longitudinal direction,
Also, one end of the breathing gas flow lumen of the breathing tube on the side to which the breathing gas flow tube is not connected has a structure that opens to the outside between the first balloon and the second balloon. The first balloon inflation tube is connected to and passed through the first balloon inflation lumen on the proximal end side of the suction tube, and the first balloon inflation lumen is on the distal end side. The second balloon inflating tube opens to the inside of the first balloon, and the second balloon inflating tube is connected to, inwardly passes, and passes through the second end of the breathing tube for inflating the second balloon. The inflating lumen is opened inside the second balloon, and the distal end side of the first balloon of the breathing tube is not curved,
It extends on a straight line, and the end surface of the tip is formed by cutting obliquely so that the leading edge is on the outer peripheral side of the curve,
In addition, the esophagus for emergency resuscitation is characterized in that the second balloon swells greatly in the longitudinal direction and the width direction as compared with the first balloon so as to close the lumen from the deep oral cavity to the nasopharyngeal cavity. Inside airway.