CN115137933A - High-frequency jet oxygen supply loop based on anesthesia machine and use method thereof - Google Patents

Abstract

The invention belongs to the field of medical instruments, and relates to a high-frequency jet oxygen supply loop based on an anesthesia machine and a using method thereof, wherein the high-frequency jet oxygen supply loop comprises an oronasal sealing cover and a ventilation connecting pipe; the mouth and nose sealing cover is provided with a mirror operation opening and an air outlet, and a second sealing part is arranged in the mirror operation opening; one end of the ventilation connecting pipe is communicated with an air outlet pipe and an oxygen supply pipe, the air outlet pipe is connected with an air outlet of the oronasal sealing cover, the oxygen supply pipe is used for being matched and connected with an oxygen supply port of the hard bronchoscope, and the other end of the ventilation connecting pipe is used for being matched and connected with a breathing loop of an anesthesia machine; an air inlet one-way valve is arranged in the oxygen supply pipe, and an air outlet one-way valve is arranged in the air outlet pipe or the air outlet. The invention does not influence the autonomous respiration of the infant, avoids oxygen rich in anesthetic gas from being discharged in an operating room to pollute the operating environment, avoids anesthetic gas from being inhaled by operating doctors, anesthetists and nurses, avoids anesthetic gas waste, and simultaneously ensures that the infant can be continuously anesthetized by inhalation so as to avoid body movement of the infant.

Description

A kind of high-frequency jet oxygen supply circuit based on anesthesia machine and using method thereof

technical field

The invention relates to the field of medical instruments, in particular to a high-frequency jet oxygen supply circuit based on anesthesia machines and a method for using the same.

Background technique

The protective reflex of the epiglottis in children and young children is not fully developed. When crying and laughing while eating, it is easy for food fragments to stray into the airway, resulting in suffocation. The condition is very urgent and needs to be treated as soon as possible, otherwise it will easily lead to death. Due to the high risk of this operation, few hospitals are willing to take such risks. Even in prefecture-level cities, only one hospital is willing to undertake such operations, and no hospitals in county-level cities are even willing to undertake such operations.

Rigid bronchoscopy is often used in the removal of foreign bodies in the main trachea of children. It is extremely difficult to manage breathing during the operation. It is often accompanied by a serious drop in the oxygen saturation of the child, and even a serious drop in the heart rate of the child, which brings great pressure to the surgeon and the anesthesiologist. It brings great risk to patients, even death.

At present, the commonly used methods of anesthesia include the following methods: 1. According to the method of anesthesia, two to three medical staff are used to forcibly immobilize the body, limbs and head of the child. The child will struggle violently. If the braking is not appropriate, the rigid bronchoscope can cause airway damage or even rupture of the trachea, resulting in pressure pneumothorax and even death. bolus injection of anesthetics (without muscle relaxants), however, there is a foreign body in the airway of the child, and the breathing is already impaired. If the respiratory depression is caused by the intravenous anesthetic, the patient’s hypoxia will be more serious, and the oxygen saturation is often accompanied by a serious drop in the surgical operation. Even if the operation is suspended for many times, and the operation is continued after the oxygen supply, the doctor is unwilling to interrupt the operation at the critical moment of the operation, the oxygen saturation even drops below 50%, and the heart rate drops below 50bpm, the child is at great risk; 3. General anesthesia Method (using muscle relaxants), this method is to intubate the trachea after induction of anesthesia, pull out the tracheal tube during the operation, connect the rear of the rigid bronchoscope to a jet ventilator for oxygen supply, and withdraw from the rigid bronchoscope when the oxygen saturation is severely reduced Bronchoscopy, re-tracheal intubation to supply oxygen, after sufficient oxygenation, the endotracheal tube is pulled out, and the end of the rigid bronchoscope is connected to a jet ventilator for oxygen supply. The operation is tedious, and the operation is tedious. Repeated intubation is accompanied by glottis friction injury. Pain, hoarseness, and after the operation, the tracheal intubation needs to be re-intubated, and the child will be extubated after the muscle relaxant is metabolized, and the waiting time will be long; 4. Inhalation general anesthesia, use the mask to buckle the patient's mouth and nose to inhale high blood pressure. Concentrated gas anesthesia. When the depth of anesthesia is sufficient, the mask is removed, and the rigid bronchoscope is connected to a jet ventilator for oxygen supply. Since inhalation anesthetics will not inhibit breathing, the oxygen saturation during the operation is rarely decreased. There is only one jet ventilator in one hospital. Inhalation anesthesia cannot be maintained when jet breathing is performed by jet ventilator. Inhalation general anesthesia can be maintained for a very short time (only 2-3 min n). During the operation, the medical staff need to use anesthesia method to brake the child, which requires extremely high requirements for the surgeon, requires fast and precise operation, and completes the removal operation very skillfully, otherwise it will fall into a very passive situation.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: in order to solve the problem of how to ensure that the child does not move or struggle during the operation, breathe normally, and can quickly wake up after the operation, the present invention provides a high-frequency injection based on an anesthesia machine. Oxygen supply circuit and method of use thereof.

The present invention provides a high-frequency jet oxygen supply circuit based on anesthesia machine and a method for using the same, comprising a mouth-nose sealing cover for fixing and sealing the periphery of a patient's mouth and nose and a ventilation connecting pipe for connecting a breathing circuit and a breathing port of an anesthesia machine The mouth-nose sealing cover is provided with a mirror operation port for the placement of a rigid bronchoscope and an air outlet for communicating with the ventilation connecting pipe, and the mirror operation port is provided with a seal for ensuring that the rigid bronchoscope is placed in The second sealing part is a flexible second sealing part; one end of the ventilation connecting pipe is connected with an outlet pipe and an oxygen supply pipe, the air outlet pipe is connected with the air outlet of the mouth-nose sealing mask, and the oxygen supply pipe is used for oxygen supply with the rigid bronchoscope. The other end of the ventilation connection pipe is used for matching connection with the breathing circuit of the anesthesia machine; the oxygen supply pipe is provided with an air inlet one-way valve, and the air outlet pipe or the air outlet is provided with an air outlet one-way valve; using The ventilation connection tube is directly connected to the anesthesia machine and directly connected to the breathing circuit, so that the child can be continuously paralyzed without affecting the child's spontaneous breathing.

In some embodiments, the present invention further includes a transparent elastic sealing cap for sealing the operating port of the rigid bronchoscope, the sealing cap defines a forceps operating port for foreign body extraction forceps placement, the forceps operating port There is a first sealing part inside to ensure the sealing performance of the foreign body removal forceps; it ensures that the foreign body removal forceps have good sealing performance when the foreign body removal forceps are placed.

In some embodiments, the first sealing portion is flat as a whole, and the first sealing portion includes a plurality of first elastic flaps, and the tail ends of the first elastic flaps are fixedly connected to the inner wall of the forceps operating port. , the structure of the second sealing part is the same as that of the first sealing part; the first elastic valve can be tightly attached to the rigid bronchoscope or foreign body extraction forceps by its own elasticity after being squeezed by the rigid bronchoscope or foreign body extraction forceps so as to ensure the tightness of the rigid bronchoscope or the mouth-nose sealing mask during use.

In some embodiments, the first sealing portion is in the shape of a cone as a whole, and the first sealing portion includes a plurality of second elastic flaps, and the tail ends of the second elastic flaps are fixedly connected to the inner wall of the forceps operating port. , the structure of the second sealing part is the same as that of the first sealing part; the second elastic valve can be tightly attached to the rigid bronchoscope or foreign body extraction forceps by its own elasticity after being squeezed by the rigid bronchoscope or foreign body extraction forceps This ensures the tightness of the rigid bronchoscope or the mouth-nose sealing mask during use.

In some embodiments, two anesthesia breathing tubes for matching connection with the inhalation port and the exhalation port of the anesthesia machine are communicated on the ventilation connection tube; the two anesthesia breathing tubes, the outlet tube and the oxygen supply tube pass through The ventilation connecting tubes are connected to each other; the two anesthesia breathing tubes can be inserted into the exhalation port or the inhalation port at will without selecting the insertion position.

In some embodiments, the oronasal seal is provided with a fixing strap for fixing the oronasal seal on the periphery of the patient's mouth and nose; it is convenient to quickly fix the oronasal seal on the head of the patient

In some embodiments, the present invention further includes a tongue depressor opening device, the tongue depressor opening device includes an upper tooth support body, a lower pressure support body, an elastic support body and a tongue blocking piece, and the elastic support body is used to stretch the upper teeth A tooth support body and a lower tooth support body, the upper tooth support body and the lower tooth support body are distributed at an upper and lower interval, the elastic support body is located between the upper tooth support body and the lower tooth support body, and the upper tooth support body and the lower tooth support body are arranged. The dental support body is fixedly connected with the elastic support body, and the tongue blocking piece is detachably connected to the lower tooth support body; the elastic support body is used to make the upper tooth support body and the lower tooth support body tightly supported on the upper dentition crown respectively. The tongue block can be used to block the tongue of the child on the surface of the lower dentition and the crown surface of the lower dentition.

In some embodiments, the rear end of the bottom of the blocking tongue is provided with at least two fixed insertion rods, and the rear end of the pressing support body is provided with a fixed socket that is inserted and matched with the fixed insertion rod; the blocking tongue can be It can be disassembled quickly, and the depth of the tongue blocking plate extending into the oral cavity can be properly adjusted according to the actual situation of the oral cavity.

In some embodiments, the fixed insertion rod is arranged horizontally, and the axial direction of the fixed insertion rod is perpendicular to the length direction of the blocking tongue piece, and the cross section of the fixed insertion rod is a regular polygon; thus, the blocking tongue piece can be properly adjusted and fixed. Angle, flexibility improved.

The steps of using the high-frequency jet oxygen supply circuit based on anesthesia machine include:

S1: Turn on the anesthesia machine and connect the ventilation connection tube to the anesthesia machine;

S2: First, fix the mouth and nose seal on the outer ring of the child's mouth and nose through the fixing strap;

S3: Open the anesthetic gas vaporizer of the anesthesia machine, and the child can quickly enter the state of total inhalation anesthesia after inhaling the anesthetic gas;

S4: Open the mouth and nose seal, insert the tongue depressor into the child's mouth, so that the child's mouth is completely open, then fix the mouth and nose seal on the child's mouth and nose again, The oxygen supply tube of the ventilation connection tube is connected to the oxygen supply port of the rigid bronchoscope. The rigid bronchoscope is passed through the endoscope operation port of the mouth-nose sealing mask, and the rigid bronchoscope is inserted into the airway of the child until the foreign body is found. ;

S5: Adjust the breathing frequency of anesthesia to the maximum, and set the tidal volume to 3-5ml/kg;

S6: Pass the foreign body extraction forceps through the operation port of the forceps so that the foreign body extraction forceps can enter the rigid bronchoscope, and the doctor performs the foreign body extraction operation;

S7: After the removal of the foreign body, close the vaporizer of the anesthesia machine and continue to supply oxygen to the child; when the child wakes up, take off the mouth and nose seal, and the anesthesia ends.

The beneficial effects of the present invention are:

First, the present invention provides a high-frequency jet oxygen supply circuit based on anesthesia machine and its use method, which does not affect the spontaneous breathing of children, and also prevents oxygen rich in anesthetic gas from being discharged into the operating room, pollutes the operating environment, and avoids surgery. Physicians, anesthesiologists and nurses inhale the anesthetic gas, which also avoids the waste of anesthetic gas, and also enables the child to be continuously under inhalation anesthesia, avoiding the child's physical movement.

Second, a high-frequency jet oxygen supply circuit based on anesthesia machine and its using method of the present invention adopts a first sealing part and a second sealing part to ensure the airtightness of the entire oxygen supply circuit during operation.

Third, a high-frequency jet oxygen supply circuit based on anesthesia machine of the present invention and a method of using the same are provided with a tongue depressor, and the tongue depressor is used to open the mouth of the child to the maximum and avoid the blocking of the tongue. sight.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic structural diagram of the first embodiment of a high-frequency jet oxygen supply circuit based on an anesthesia machine and a method of using the same;

Fig. 2 is the structural representation of rigid bronchoscope;

Figure 3 is a schematic cross-sectional structure diagram of a rigid bronchoscope;

Fig. 4 is the structural representation of the mouth-nose sealing cover;

Fig. 5 is the structural representation of tongue depressor;

Figure 6 is a partial disassembly schematic diagram of the tongue depressor;

7 is a schematic structural diagram of the second embodiment of the high-frequency jet oxygen supply circuit based on anesthesia machine and its using method according to the present invention.

Reference numerals: 1, mouth and nose sealing cover; 11, mirror operation port; 12, air outlet; 2, ventilation connecting pipe; 21, trachea; 22, oxygen supply pipe; 23, anesthesia breathing tube; 3, rigid bronchus Mirror; 31, oxygen supply port; 4, second sealing part; 5, transparent elastic sealing cap; 51, forceps operation port; 6, first sealing part; 61, first elastic valve; 62, second elastic valve 7, the tongue depressor; 71, the upper teeth support body; 72, the lower pressure support body; 721, the fixed socket; 73, the elastic support body; 74, the tongue block;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.

In this embodiment, as shown in FIGS. 1 to 7 , a high-frequency jet oxygen supply circuit based on anesthesia machine and a method of using the same, including an oronasal sealing cover 1 for fixing and sealing around the periphery of a patient’s mouth and nose, and a In order to connect the breathing circuit and the breathing port of the anesthesia machine, the ventilation connection pipe 2; in order to allow the mouth and nose sealing cover 1 to be easily fixed on the head of the child, a fixed belt is set on the mouth and nose sealing cover 1 to seal the mouth and nose. The cover 1 is provided with a scope operation port 11 for the placement of the rigid bronchoscope 3 and an air outlet 12 for communicating with the ventilation connecting tube 2, and the scope operation port 11 is provided with a seal for ensuring the placement of the rigid bronchoscope 3. The second sealing part 4; one end of the ventilation connecting pipe 2 is connected with an outlet pipe 21 and an oxygen supply pipe 22, and the air outlet pipe 21 is connected with the air outlet 12 of the mouth-nose sealing cover 1, and the oxygen supply pipe 22 is used with the rigid bronchoscope 3 The oxygen supply port 31 is matched and connected, and the other end of the ventilation connection pipe 2 is used for matching connection with the breathing circuit of the anesthesia machine; the oxygen supply pipe 22 is provided with an air intake check valve, and the air outlet pipe 21 or the air outlet 12 is provided with an air outlet one-way valve. The setting of the valve, the inlet check valve and the outlet check valve can make the oxygen only enter the oxygen supply pipe 22, so that the exhaled gas can only enter the outlet pipe 21 or the air outlet 12, and the incoming oxygen and the exhaled gas can only enter the oxygen supply pipe 22. Gases do not interfere with each other. The anesthesia machine directly passes through the exhalation pipeline of the anesthesia threaded pipe connected to it, and then through the ventilation connection pipe 2, the oxygen rich in anesthetic gas can be continuously introduced into the oxygen supply pipe 22, and then into the rigid bronchoscope 3 and then into the rigid bronchoscope 3. Into the body of the child, the breath exhaled by the child can pass through the outlet pipe 21 of the ventilation connecting pipe 2, and then return to the anesthesia machine through the inspiratory pipe of the anesthesia threaded pipe, which does not affect the child's spontaneous breathing and avoids richness. Oxygen containing anesthetic gas is discharged in the operating room, polluting the operating environment, avoiding the inhalation of anesthetic gas by surgeons, anesthesiologists and nurses, and avoiding the waste of anesthetic gas. At the same time, it also enables children to be continuously anesthetized by inhalation and avoid physical movement of children. .

Since the foreign body removal forceps needs to enter the rigid bronchoscope 3 to perform the operation, the foreign body removal forceps must have good sealing when entering the rigid bronchoscope 3 so as not to affect the breathing circuit. Therefore, the present invention also provides a device for The sealing sleeve is provided with a transparent elastic sealing cap 5 on the operation port of the rigid bronchoscope 3. The transparent elastic sealing cap 5 is provided with a clamp operation port 51 for inserting foreign body extraction forceps. into the airtight first sealing portion 6 .

The first sealing part 6 and the second sealing part 4 are important components to ensure the tightness of the entire oxygen supply circuit. The first sealing part 6 and the second sealing part 4 adopt two embodiments:

The first type is that the first sealing portion 6 is flat as a whole, and the first sealing portion 6 includes a plurality of first elastic flaps 61 . The structure of the sealing part 4 is the same as that of the first sealing part 63. Whether the rigid bronchoscope 3 or the foreign body extraction forceps is pressed against the first elastic valve 61, the first elastic valve 61 can be tightly attached by its own elastic force. On the rigid bronchoscope 3 or the foreign body removal forceps, to avoid creating gaps, this method takes up less space.

The second type is that the first sealing portion 6 is in the shape of a cone as a whole. The first sealing portion 6 includes a plurality of second elastic flaps 62. The structure of the sealing part 4 is the same as that of the first sealing part 6, and the difference from the first one is that the second elastic valve 62 is arranged obliquely, so that the area attached to the rigid bronchoscope 3 or the foreign body extraction forceps can be enlarged. , that is, the sealing effect is better.

When installing the entire oxygen supply circuit, it is necessary to select and install the corresponding pipeline according to the position of the exhalation port and the inhalation port of the anesthesia machine, which has certain limitations. The anesthesia breathing tube 23 matched with the exhalation port and the inhalation port of the anesthesia machine; the two anesthesia breathing tubes 23, the outlet tube 21 and the oxygen supply tube 22 are communicated with each other through the ventilation connection tube 2, so that the design can make the two anesthesia breathing tubes 23 There is no need to select the insertion position, and it can be connected to the outgoing port or incoming port of the anesthesia machine at will. After the inhaled or exhaled gas is connected to each other through the ventilation connection pipe 2, the circulation pipeline can be automatically selected, and one-way circulation is realized under the air outlet pipe 21 and the oxygen supply pipe 22, so as to avoid the two anesthesia breathing pipes 23 and the exhalation port or inhalation port of the anesthesia machine. The directional connection of the connection avoids the serious consequences caused by the connection error.

Since the rigid bronchoscope 31 is to be inserted into the airway through the oral cavity of the child, the tongue in the oral cavity is the biggest factor that hinders the sight of objects, so a tongue depressor 7 is also provided. The tongue depressor 7 includes the upper The tooth support 71, the lower pressure support 72, the elastic support 73 and the tongue blocking piece 74, the elastic support 73 is used to stretch the upper tooth support 71 and the lower tooth support, the upper tooth support 71 and the lower tooth support The upper teeth support body 71 presses against the crown surface of the upper teeth row, the lower teeth support body presses against the dental crown surface of the lower teeth row, and the elastic support body 73 is located between the upper teeth support body 71 and the lower teeth between the supports, and both the upper support 71 and the lower support are fixedly connected to the elastic support 73, and the elastic support 73 is used to support the upper support 71 and the lower support, so that the upper support 71 The tongue blocking piece 74 can be detachably connected to the lower tooth support body, because the tongue length of different people is different. Therefore, at least two fixed insertion rods 741 are provided at the rear end of the bottom of the blocking tongue 74, and the rear end of the pressing support body 72 is provided with a fixed socket 721 that is inserted and matched with the fixed insertion rods 741. The fixed insertion rods 741 The plug-in cooperation with the fixed socket 721 enables the entire blocking tongue 74 to be disassembled, and changing the fixed insertion rod 741 plugged with the fixed socket 721 can change the depth of the blocking tongue 74 extending into the oral cavity, that is, no matter whether the tongue is long or short, All of the tongue blocking pieces 74 can block the tongue body at a suitable position, so as to improve the comfort of use.

Further, the fixed insertion rod 741 is arranged horizontally, and the axial direction of the fixed insertion rod 741 is perpendicular to the length direction of the blocking tongue piece 74, and the cross section of the fixed insertion rod 741 is a regular polygon, so that the blocking tongue piece 74 can be properly adjusted. Flexibility has also been improved, further enhancing the comfort of use.

Preferably, the elastic support body 73 can be one or two, and the shape can be set as a circular ring, which has the best effect.

Using method of the present invention:

S1: Turn on the anesthesia machine, and connect the ventilation connecting pipe 2 to the anesthesia machine;

S2: First, fix the mouth-nose sealing cover 1 on the outer ring of the child's mouth and nose through a fixing strap;

S3: Open the anesthetic gas vaporizer of the anesthesia machine, and the child can quickly enter the state of total inhalation anesthesia after inhaling the anesthetic gas;

S4: Open the mouth and nose sealing cover 1, insert the tongue depressor 7 into the mouth of the child, so that the mouth of the child is in a fully open state, and then fix the mouth and nose sealing cover 1 outside the mouth and nose of the child again Connect the oxygen supply pipe 22 of the ventilation connecting pipe 2 to the oxygen supply port 31 of the rigid bronchoscope 3, pass the rigid bronchoscope 3 through the mirror operation port 11 of the mouth-nose sealing cover 1, and connect the rigid bronchoscope 3 into the child's airway until the foreign body is found;

S5: Adjust the breathing frequency of anesthesia to the maximum, and set the tidal volume to 3-5ml/kg;

S6: Pass the foreign body extraction forceps through the forceps operation port 51 so that the foreign body extraction forceps can enter the rigid bronchoscope 3, and the doctor performs the foreign body extraction operation;

S7: After the removal of the foreign body is completed, turn off the vaporizer of the anesthesia machine, continue to supply oxygen to the child, and when the child wakes up, take off the mouth and nose sealing cover 1, and the anesthesia ends.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A high-frequency injection oxygen supply loop based on an anesthesia machine is characterized by comprising an oral-nasal sealing cover (1) which is fixedly sealed at the periphery of the oral nose of a patient and a ventilation connecting pipe (2) which is used for connecting a breathing loop and a breathing port of the anesthesia machine; a mirror operation opening (11) for placing the hard bronchoscope (3) and an air outlet (12) communicated with the ventilation connecting pipe (2) are formed in the mouth-nose sealing cover (1), and a second sealing part (4) for ensuring the sealing performance of the hard bronchoscope (3) is arranged in the mirror operation opening (11); one end of the ventilation connecting pipe (2) is communicated with an air outlet pipe (21) and an oxygen supply pipe (22), the air outlet pipe (21) is connected with an air outlet (12) of the oronasal sealing cover (1), the oxygen supply pipe (22) is used for being matched and connected with an oxygen supply port (31) of the hard bronchoscope (3), and the other end of the ventilation connecting pipe (2) is used for being matched and connected with a breathing loop of an anesthesia machine; an air inlet one-way valve is arranged in the oxygen supply pipe (22), and an air outlet one-way valve is arranged in the air outlet pipe (21) or the air outlet (12).

2. The high-frequency jet oxygen supply loop based on the anesthesia machine of claim 1, characterized in that: still establish transparent elastic seal cap (5) at stereoplasm bronchoscope (3) operation port including being used for the sealed cover, transparent elastic seal cap (5) are seted up and are used for the foreign matter to take out pincers operation mouth (51) of putting into, be equipped with in pincers operation mouth (51) and be used for guaranteeing that the foreign matter takes out pincers and puts into first sealing (6) of leakproofness.

3. The high-frequency jet oxygen supply loop based on the anesthesia machine of claim 2, characterized in that: the whole first sealing part (6) is flat, the first sealing part (6) comprises a plurality of first elastic valves (61), the tail ends of the first elastic valves (61) are fixedly connected with the inner wall of the forceps operation opening (51), and the second sealing part (4) and the first sealing part (6) are identical in structure.

4. The high-frequency jet oxygen supply loop based on the anesthesia machine of claim 2, characterized in that: the whole first sealing part (6) is conical, the first sealing part (6) comprises a plurality of second elastic valves (62), the tail ends of the second elastic valves (62) are fixedly connected with the inner wall of the forceps operation opening (51), and the second sealing part (4) is identical to the first sealing part (6) in structure.

5. The high-frequency jet oxygen supply loop based on the anesthesia machine of claim 1, characterized in that: the ventilation connecting pipe (2) is communicated with two anesthesia breathing pipes (23) which are used for being matched and connected with an inhalation port and an exhalation port of an anesthesia machine; the two anesthetic breathing tubes (23), the air outlet tube (21) and the oxygen supply tube (22) are communicated with each other through the ventilation connecting tube (2).

6. The high-frequency jet oxygen supply loop based on the anesthesia machine of claim 1, characterized in that: the mouth and nose sealing cover (1) is provided with a fixing belt used for fixing the mouth and nose sealing cover (1) at the periphery of the mouth and nose of a patient.

7. The high-frequency injection oxygen supply loop based on the anesthesia machine as claimed in claim 1, wherein: still include tongue pressing mouth gag (7), tongue pressing mouth gag (7) include upper teeth supporter (71), push down supporter (72), elastic support body (73) and keep off tongue piece (74), elastic support body (73) are used for strutting upper teeth supporter (71) and lower teeth supporter, upper teeth supporter (71) and lower teeth supporter are interval distribution from top to bottom, elastic support body (73) are located upper teeth supporter (71) and between the lower teeth supporter, and upper teeth supporter (71) and lower teeth supporter all with elastic support body (73) fixed connection, it connects on lower teeth supporter to keep off tongue piece (74) detachable.

8. The high frequency jet oxygen supply loop based on anesthesia machine of claim 7, characterized in that: the tail end of the bottom of the tongue piece (74) is provided with at least two fixed insertion rods (741), and the tail end of the downward pressing support body (72) is provided with a fixed socket (721) which is in insertion fit with the fixed insertion rods (741).

9. The high frequency jet oxygen supply loop based on anesthesia machine of claim 8, characterized in that: the fixed insertion rod (741) is horizontally arranged, the axial direction of the fixed insertion rod (741) is perpendicular to the length direction of the tongue blocking piece (74), and the cross section of the fixed insertion rod (741) is in a regular polygon shape.

10. The use method of the high-frequency injection oxygen supply loop based on the anesthesia machine as claimed in claims 1-9, which comprises the steps of:

s1: opening the anesthesia machine, and connecting the ventilation connecting pipe (2) to the anesthesia machine;

s2: firstly, fixing an oronasal sealing cover (1) on the oronasal outer ring of a child patient by a fixing bridle;

s3: the anesthetic gas volatilization tank of the anesthesia machine is opened, and the infant can rapidly enter an inhalation anesthesia state after inhaling the anesthetic gas;

s4: opening the oronasal sealing cover (1), placing the tongue-pressing mouth gag (7) into the oral cavity of the infant, enabling the oral cavity of the infant to be in a completely opened state, then fixing the oronasal sealing cover (1) on the outer ring of the oronasal of the infant again, connecting an oxygen supply pipe (22) of the ventilation connecting pipe (2) to an oxygen supply port (31) of the hard bronchoscope (3), penetrating the hard bronchoscope (3) through a scope operation port (11) of the oronasal sealing cover (1), and placing the hard bronchoscope (3) into the airway of the infant until a foreign body is found;

s5: adjusting the anesthetic breathing frequency to the maximum, and setting the tidal volume to be 3-5ml/kg;

s6: the foreign matter taking-out forceps are passed through the forceps operation opening (51) so that the foreign matter taking-out forceps can enter the hard bronchoscope (3), and a doctor performs a foreign matter taking-out operation;

s7: after the foreign matter is taken out, the volatilization tank of the anesthesia machine is closed, and oxygen supply is continued to the infant patient; when the infant awakens, the mouth and nose sealing cover (1) is separated, and the anesthesia is finished.

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