CN212282489U

CN212282489U - Visual trachea cannula hard lens for airway surface anesthesia

Info

Publication number: CN212282489U
Application number: CN202020831196.XU
Authority: CN
Inventors: 李治玺; 陈广民
Original assignee: Harbin Medical University
Current assignee: Harbin Engineering University; Harbin Medical University
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-01-05
Anticipated expiration: 2030-05-18

Abstract

The utility model provides a visual trachea cannula hard mirror for airway surface anesthesia, a serial communication port, include: display, hard mirror handle, high-pressure bottle and stainless steel pipe. A high-pressure bottle is arranged inside the hard mirror handle, and a camera unit and a nozzle are arranged at the front end of the stainless steel tube; the high-pressure bottle is filled with local anesthetic liquid medicine and high-pressure gas, the bottom end of the high-pressure bottle is provided with a bottle valve, and the high-pressure bottle can be arranged in a medicine bin of the hard mirror handle; a local anesthetic liquid conveying pipeline is arranged inside the stainless steel pipe, one end of the local anesthetic liquid conveying pipeline is connected with the spray head, and the other end of the local anesthetic liquid conveying pipeline is connected with the cylinder valve through a tail pipe; the front end of the hard mirror handle is provided with a spraying button, and the gas in the high-pressure bottle can be triggered to push the local anesthetic liquid medicine to be sprayed out through the spray head by pressing the spraying button. The utility model discloses to any position in the visible range all can carry out surface anesthesia, make anesthesia effect more accurate, reliable and controllable, be particularly useful for the trachea cannula operation of difficult air flue patient such as neck mobility is poor, head and neck portion traumatism, the degree of opening is little, obesity, short neck, glottis height partially, but one-man operation, and the cost of manufacture is low.

Description

Visual trachea cannula hard lens for airway surface anesthesia

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a visual intubate hard mirror for airway surface anesthesia.

Background

Trachea cannula is one of the common airway management methods for anesthetists, has various trachea cannula tools, but frequently encounters difficult airways (poor head and neck mobility, small openness, overhigh glottis, jaw and face trauma, tongue hypertrophy and the like) in clinical work, which brings great difficulty for anesthetists to use common tools to perform trachea cannula, and visual hard glasses are widely applied to trachea cannula of patients with difficult airways due to the advantages of small required head back-up angle, small openness requirement, no need of lifting the epiglottis to expose the glottis during trachea cannula and the like. However, even though there are many advantages of visual hard glasses, strong stimulation to patients during tracheal intubation is difficult to avoid, and the stimulation easily causes excitation of sympathetic nerves and parasympathetic nerves, loses the original balance, causes severe fluctuation of hemodynamics, and easily causes cardiovascular and cerebrovascular bleeding accidents. However, after the intubation is finished, the narcotic sedative and analgesic drugs still have continuous action in vivo, so that the blood pressure, the heart rate and the cardiac output are usually reduced remarkably after the intubation is finished, the period becomes the high-incidence period of the cardiovascular and cerebrovascular infarction, and the process further increases the risk of cardiovascular and cerebrovascular accidents for patients with heart diseases, hypertension, old age, cerebral ischemia, cerebral infarction or circulatory failure.

The trachea cannula technology combining general anesthesia with airway surface anesthesia is a trachea cannula technology which can be carried out by combining a small amount of general anesthesia medicine under sufficient airway surface anesthesia, and has the advantages of small circulation fluctuation in the cannula inserting period, small dosage of the general anesthesia medicine, reduction of side reaction of the medicine and less anesthesia complication. The local anesthetic is sprayed to the oral cavity, glottis, main bronchus and other parts before trachea intubation to perform surface anesthesia, complete anesthesia on the inner surfaces of the oropharynx, the larynx and the trachea can inhibit autonomic nerve reflex during trachea intubation, the local anesthetic is absorbed by the oropharynx respiratory tract and the tracheal mucosa to stabilize nerve cell membranes, inhibit generation and conduction of nerve impulse, effectively reduce generation and transmission of damage stimulation of the trachea intubation, and fundamentally inhibit reaction of sympathetic adrenal medulla. Can greatly reduce the stimulation intensity of the tracheal intubation, further reduce the severe fluctuation of the blood pressure and the heart rate in the intubation period, reduce the dosage of general anesthesia medicines in the anesthesia induction period, reduce the adverse reaction and complication rate of the medicines, and reduce the occurrence of cardiovascular and cerebrovascular accidents. (reference: xuRu seal, tetracaine endotracheal surface anesthesia clinical observation for preventing cardiovascular side effects of endotracheal intubation [ J ] J. 369). However, the current airway surface anesthesia device used clinically is complex in operation and inaccurate in anesthesia effect, so that the clinical application of the medical equipment is limited.

The tracheal intubation hard mirror used clinically at present does not have the function of airway surface anesthesia. Before a patient with a difficult airway is subjected to tracheal intubation, an anesthesiologist needs to use a method such as mouth rinsing, cricothyroid membrane puncture or application of additional spraying equipment (such as a spray can, a spray pipe and an injector) to enable local anesthetic to act on a designated part, but the effect of the method is often related to factors such as the matching degree of the patient and the skill degree of operation of the anesthesiologist, and the additional spraying equipment is difficult to enable the local anesthetic to act on the deep part of the airway, so that the airway surface anesthetic effect is not exact, even the situations of local anesthetic poisoning and the like occur, and the injurious stimulation caused during tracheal intubation cannot be avoided.

At present, no patent technology relating to a visual tracheal intubation hard mirror for airway surface anesthesia exists, and only the patent technology relating to a visual tracheal intubation laryngoscope for airway surface anesthesia exists.

Chinese patent documents: CN203389193U, publication date: 2014-01-15, with patent names: a surface anesthesia device special for an anesthetic laryngoscope. The utility model discloses a special surface anesthesia ware of anesthetic laryngoscope, including spraying medicine bottle, play medicine pipeline, atomizer and mirror handle and lens fixation clamp, adopt mirror handle clamp and lens clamp to be connected with the anesthetic laryngoscope, the atomizer that the front end goes out the medicine is located laryngoscope piece front end.

When the anesthetic laryngoscope is used for tracheal intubation, the handle can be held by one hand and the forefinger is used for buckling and pressing the pressing handle, so that atomized local anesthetic liquid medicine is sprayed to the oral cavity, glottis and other places for surface anesthesia, and the dual purposes of shortening the operation time of surface anesthesia such as glottis and the like and effectively reducing stress reaction of tracheal intubation of a patient are achieved; the medicine outlet pipeline adopts a spiral stretchable design, is suitable for large, medium and small lenses, and has simple structure and more comfortable and convenient use. But the device adopts the buckling and pressing handle to spray, and the operation is complicated; the spraying effect is influenced by the use strength of an operator and is unstable; the device is fixed on a common laryngoscope for use through four U-shaped laryngoscope lens fixing clamps, the fixing clamps are not fixed tightly, and the position angle of the spray head is unstable; the fixation clamp may fall into the airway, posing a risk to the safety of the patient. And the device cannot be used for patients with difficult airway, which limits the application range of the device, so that the device is difficult to popularize and use in clinical practical work.

In conclusion, there is a need for a visual hard mirror with sufficient, stable and definite airway surface anesthesia effect, simple operation, low manufacturing cost, repeated use and applicability to tracheal intubation of patients with difficult airways. The tracheal intubation tube is used in the fields of general anesthesia combined with airway surface anesthesia and conscious state tracheal intubation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a visual trachea cannula hard mirror for airway surface anesthesia, be one and implement the oral cavity, the throat, the glottis, the main tributary trachea, the medical equipment of main tributary trachea deep surface anesthesia, it is to the oral cavity to trigger hyperbaric oxygen through pressing the button and carry local anesthetic (tetracaine) droplet, the glottis, position such as main tributary trachea sprays implementation surface anesthesia, with the quantity that reduces anesthesia induction phase general anesthesia medicine, reduce adverse drug reaction and complication incidence, reduce the incidence of intubate phase patient cardiovascular and cerebrovascular accident, need not panniculus puncture, with obtain good airway deep table anesthesia effect, make clear-headed lower intubate process safer, it is comfortable and convenient, improve patient's anesthesia travelling comfort and security, promote difficult airway patient trachea cannula's success rate.

In order to achieve the above object, the utility model adopts the following technical scheme:

a visual endotracheal intubation hard mirror for airway surface anesthesia, comprising:

a display;

one end of the hard mirror handle is connected with the display through a rotating head, the front side of the hard mirror handle is provided with a spraying button, a medicine bottle bin is arranged in the hard mirror handle, a high-pressure bottle is accommodated in the medicine bottle bin, and local anesthetic liquid medicine and high-pressure gas are filled in the high-pressure bottle; the cylinder valve of the high-pressure bottle is connected with the spray button through a linkage lever;

the rear end of the stainless steel pipe is connected with the other end of the hard mirror handle, the front end of the stainless steel pipe is provided with a lighting unit, a camera shooting unit and a spray head, the lighting unit and the camera shooting unit are in signal connection with the display through camera lines, and the spray head is connected with a bottle valve of the high-pressure bottle through a local anesthetic conveying pipe; the camera line passes through the stainless steel pipe, the hard mirror handle and the rotary head and is connected with the circuit board of the display; the local anesthetic delivery pipe is arranged in the stainless steel pipe.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the hard mirror handle is internally provided with a battery bin which is connected with a circuit board of the display by virtue of positive and negative electrode wires penetrating through the rotating head.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the spray head is embedded in the stainless steel pipe and protrudes out of the front end of the stainless steel pipe; the interior of the spray head is of a hollow structure, the front end of the spray head is of a hollow conical shape, and the rear end of the spray head is of a hollow cuboid; the front end of the spray head is provided with a small hole communicated with the outside, and the rear end is provided with a thin pipe connected with a local anesthetic conveying pipe.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the front end of the stainless steel pipe is provided with an arc-shaped section, the length of the arc-shaped section is 13-18cm, and the radian is 120-145 degrees.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the other end of the hard mirror handle is fixed with a tail pipe which is made of a transparent soft plastic pipe, one end of the tail pipe is connected with a local anesthetic delivery pipeline extending into the hard mirror handle, and the other end of the tail pipe is connected with a bottle valve of a high-pressure bottle through threads.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the high-pressure bottle is disposable, and the high-pressure gas filled in the high-pressure bottle is compressed oxygen or nitrogen; the local anesthetic liquid medicine is a treatment dose.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the display can be folded at an angle of-30 degrees to 90 degrees with the hard mirror handle through the rotating head; one side of the rotary head is provided with an adjusting nut for fastening the rotary head.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the high-pressure bottle can resist high-temperature sterilization.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: the middle section of the cylinder valve is provided with a clamping position; the linkage lever is Z-shaped, the tail end of the linkage lever is provided with a clamping groove, and a hole is formed in the middle folding point; the head end of the linkage lever can be inserted into the spraying key, the tail end clamping groove can be fixed with the middle section of the cylinder valve in a clamping mode, and a hole in the middle can be used for the linkage lever shaft to penetrate through.

The visual trachea cannula hard mirror for airway surface anesthesia, wherein: a rear cover is arranged behind the medicine bottle bin of the hard mirror handle and is connected with the hard mirror handle through a hinge; the bottom end of the rear cover is provided with a pressing buckle which can be buckled with the lower end of the medicine bottle bin of the hard mirror handle.

The utility model discloses the beneficial effect who brings includes:

1. the utility model discloses supplementary trachea cannula stimulation under is amazing little than the supplementary trachea cannula of laryngoscope (possessing or not possessing the table numb function), and intubate phase vital sign is more steady, has promoted the security of general anesthesia of ordinary patient and difficult air flue patient.

2. The utility model is suitable for trachea cannula and airway surface anesthesia of patients with difficult airways (small head and neck mobility, head and neck trauma, small opening degree and the like).

3. The utility model discloses need not to lift the epiglottis (the epiglottis need be chosen to the laryngoscope) and expose the glottis, the range of operation is little, causes the artificial tooth to drop or the possibility of activity less than the laryngoscope a lot.

4. The utility model discloses the field of vision is wider, carries out the surface anesthesia under directly seeing directly under epiglottis, glottis and glottis, compares in traditional air flue surface anesthesia effect more definite, and the anesthesia controllability is strong.

5. The utility model discloses can directly go deep into the air flue deep and go on surface anesthesia to the air flue, need not to come to the surface anesthesia of deep air flue through this invasive operation of cricothyroid membrane puncture art.

6. The utility model discloses strengthened the patient to trachea cannula's endurance, made to pull out endotracheal tube process more steady.

7. The utility model discloses the surface anesthesia medicine that adopts for adaptation in equipment, can directly use, arrange the tetracaine solution in the high-pressure gas cylinder in, practiced thrift the time of configuration medicine, eliminated the influence that the concentration of medicine is improper to bring simultaneously.

8. The medicine released by the high-pressure gas cylinder can be sprayed in a mist form, so that the surface anesthesia can be fully and uniformly carried out on the air passage, and the device is superior to the point-jet anesthesia of the existing surface anesthesia equipment.

9. The utility model discloses can supply one-man operation, it is convenient to use, and is low to operator's requirement, and beginner also can be skilled easily and operate.

10. The utility model provides a high quality picture is zoomed, the video is recorded, the image shooting function, helps discovering the small anomaly in the air flue, can leave the image data of special case simultaneously, supplies the interchange study between the peer.

11. The application of general anesthesia medicine is reduced, and serious complications such as postoperative myocardial infarction, cerebral infarction and the like caused by severe fluctuation of a circulatory system and insufficient perfusion of important organs after a large amount of general anesthesia medicine is applied are avoided to the maximum extent.

12. The application range is wide, and all general anesthesia operations requiring subglottic airway management can be applied to the equipment to optimize the anesthesia scheme.

13. The cost required by general anesthesia is reduced.

Drawings

Fig. 1 is a schematic view of the whole structure of a visual trachea cannula hard mirror for airway surface anesthesia of the present invention.

Fig. 2 is a schematic view of the uncapping structure of the visual trachea cannula hard mirror for airway surface anesthesia of the present invention.

Fig. 3A, 3B and 3C are enlarged bottom views, longitudinal sectional views and cross sectional views of a visual endotracheal intubation hard mirror for airway surface anesthesia according to the present invention.

Fig. 4 is a schematic structural view of a spray trigger system of a visual endotracheal intubation hard mirror for airway surface anesthesia of the present invention.

Fig. 5 is a schematic structural view of a medicine bottle chamber of a visual endotracheal intubation hard mirror for airway surface anesthesia of the present invention.

Description of reference numerals: 1-a power switch; 2-a display; 3-a charging port; 4-turning the head; 5-hard mirror handle; 6-a hinge; 7-rear cover; 8-spraying a key; 9-catheter positioning plug; 10-stainless steel tube; 11-high pressure bottle; 12-camera line; 13-a linkage lever; 14-local anesthetic delivery tube; 15-a spray head; 16-a camera unit; 17-a linkage rod shaft; 18-a cylinder valve; 19-high pressure gas; 20-liquid medicine; 21-tail pipe.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1-5, the present invention provides a visual endotracheal intubation hard mirror for airway surface anesthesia, which comprises:

a display 2 having a power switch 1 and a charging port 3;

a hard mirror handle 5, one end of which is connected with the display through a rotary head 4, the front side of which is provided with a spray button 8, the rear side of which is connected with a rear cover 7 through a hinge 6, a battery bin (not shown) and a medicine bottle bin are arranged inside the hard mirror handle, and the battery bin is connected with a circuit board of the display 2 through a positive and negative pole wire (not shown) passing through the rotary head 4 so as to provide power; the medicine bottle bin is controlled by the rear cover 7 to be opened and closed and contains a high-pressure bottle 11, and local anesthetic liquid 20 and high-pressure gas 19 are filled in the high-pressure bottle 11; the cylinder valve 18 of the high-pressure bottle 11 is connected with the spray button 8 through the linkage lever 13;

one end of a stainless steel pipe 10 is connected with the other end of the hard mirror handle 5, the other end of the stainless steel pipe is arc-shaped, a lighting unit, a camera shooting unit 16 and a spray head 15 are arranged at the port of the stainless steel pipe, the lighting unit and the camera shooting unit are in signal connection with the display 2 through a camera line 12, the spray head 15 is connected with a local anesthetic conveying pipe 14, the local anesthetic conveying pipe 14 is connected with a bottle valve 18 of the high-pressure bottle 11 through a tail pipe 21 by virtue of threads, and a pipe body of the stainless steel pipe 10 is provided with a catheter positioning plug 9;

the camera line 12 passes through the stainless steel tube 10, the hard mirror handle 5 and the rotary head 4 and is connected with the display 2; the local anesthetic delivery tube 14 is also disposed within the stainless steel tube 10.

When the utility model is used, the spray button 8 is pressed, the linkage lever 13 can drive the bottle valve 18 of the high-pressure bottle 11 to move downwards to control the opening of the high-pressure bottle 11, the local anesthetic liquid medicine 20 in the high-pressure bottle 11 is delivered to the spray head 15 through the local anesthetic delivery pipe 14, and the local anesthetic liquid medicine is atomized and sprayed out to play an anesthetic effect; when the spray button 8 is released, the cylinder valve 18 of the bomb 11 returns to the closed position, and the local anesthetic liquid 20 stops being sprayed.

As an embodiment of the present invention: the spray head 15 is embedded into the stainless steel pipe 10, and the spray head 15 slightly protrudes out of the front end of the stainless steel pipe 10; the interior of the spray head 15 is of a hollow structure, the front end of the spray head is of a hollow conical shape, and the rear end of the spray head is of a hollow cuboid; the front end of the spray head 15 is provided with a small hole communicated with the outside, and the rear end is provided with a thin pipe connected with the local anesthetic conveying pipe 14; the local anesthetic can form turbulent flow after being sprayed out by the spray head 15 and is sprayed out in a fogdrop shape through the small hole at the front end.

As an embodiment of the present invention: the stainless steel pipe 10 is a 304 stainless steel pipe with the outer diameter of 5.0mm and the wall thickness of 0.4mm and the length of 50.0 cm; the formulation of the curvature of the tube body is that the arc section is designed to be 15cm long and 145 degrees with 120 degrees of radian according to the anatomical characteristics of the pharyngeal cavity and the requirements in the intubation process.

As an embodiment of the present invention: the tail pipe 21 of the local anesthetic delivery pipeline is a soft plastic pipe, one end of the tail pipe is connected with the local anesthetic delivery pipeline 14 in the hard endoscope handle, and the other end of the tail pipe is internally provided with threads and is communicated with the outside, and the tail pipe can be connected with the bottle valve 18 through threads or can be connected with an injector.

As an embodiment of the present invention: the high-pressure bottle 11 is disposable, and the high-pressure gas 19 filled in the high-pressure bottle is compressed oxygen or nitrogen; the local anesthetic liquid medicine 20 is a treatment dose, and the excessive amount of the medicine can be avoided.

As an embodiment of the present invention: when the high-pressure bottle 11 is vertically placed, the local anesthetic liquid 20 is firstly sprayed out, and after the local anesthetic liquid 20 is completely sprayed out, the high-pressure gas 19 is sprayed out again.

As an embodiment of the present invention: the high-pressure bottle 11 can resist high-temperature sterilization, local anesthetic liquid 20 and high-pressure gas 19 can be filled again after sterilization, and the high-pressure bottle can be used repeatedly after aseptic packaging.

As an embodiment of the present invention: the cylinder valve 18 is made of a metal pipe, the upper end of the cylinder valve is provided with a rubber ring, the middle section of the cylinder valve is provided with a clamping position, and the outer wall of the lower end of the cylinder valve is provided with threads; the screens can be buckled in the neck at the tail end of the linkage lever 13.

As an embodiment of the present invention: the linkage lever 13 is Z-shaped and made of metal materials, the head end of the linkage lever is blunt and round, the tail end of the linkage lever is flat and provided with a clamping groove, and a hole is formed in the middle folding point; the head end of the linkage lever 13 can be inserted into the spraying key 8, the tail end clamping groove can be clamped and fixed with the middle section of the cylinder valve 18, and a hole in the middle can be used for a linkage rod shaft 17 to pass through; pressing the spray button can push the linkage lever 13 to rotate around the linkage rod shaft 17, so as to change the direction of force, and the tail end of the linkage lever 13 pulls the cylinder valve 18 to move downwards.

As an embodiment of the present invention: the camera line 12 comprises six wires, is externally provided with insulating materials, and is connected with the lighting unit and the camera unit 16 through the stainless steel tube 10, the hard lens handle 5 and the rotary head 4 at one end and connected with the circuit board of the display 2 at the other end for transmitting the image data collected by the camera and supplying power to the lighting unit and the camera unit 16.

As an embodiment of the present invention: a clamping groove which is consistent with the shape and the contour of the disposable high-pressure bottle body is defined in the medicine bottle bin of the hard mirror handle 5; a rear cover 7 is arranged behind the medicine bottle bin of the hard mirror handle 5, and the rear cover 7 is connected with the hard mirror handle 5 through a hinge 6; the bottom end of the rear cover is provided with a pressing buckle which can be buckled with the lower end of the medicine bottle bin of the hard mirror handle 5, and the rear cover 7 can be bounced up by pressing the buckle; the side surface of the bottom end of the rear cover 7 is provided with a circular groove for the local anesthetic liquid conveying pipe 14 to pass through.

As an embodiment of the present invention: a storage battery is arranged in a battery compartment of the hard mirror handle 5, and positive and negative electrode wires of the storage battery are connected with a circuit board of the display 2 through a rotary head 4; the secondary battery may be repeatedly charged and discharged through the positive and negative electrode lines.

As an embodiment of the present invention: the display 2 comprises a display shell, a screen, a flat cable, a circuit board, a power switch 1 and a charging port 3; the circuit board is positioned on the back and is connected with the screen through a flat cable; the power switch 1 is positioned above the display and is connected into the circuit board through a wire; the charging port 3 is positioned on the right side of the display and is connected into the circuit board through a wire; the charging port 3 can be inserted into a head of a general 15V direct current charger to charge a storage battery in a battery compartment; the circuit board receives image signals collected by the camera unit 16 and transmitted by the camera line 12, and controls the lighting unit and the camera unit 16; the screen has the functions of visualization and touch control; the power switch 1 controls the whole circuit system to be turned on or off.

As an embodiment of the present invention: the display is connected with the hard mirror handle 5 through the rotary head 4, a camera line 12 and positive and negative electrode lines of the storage battery run in the display, and the display can be folded at an angle of-30-90 degrees through the rotary head 4 and the hard mirror handle; the right side of the rotating head 4 is provided with an adjusting nut, and the rotating head 4 can be fastened by screwing the nut.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A visual endotracheal intubation hard mirror for airway surface anesthesia, comprising:

a display;

2. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the hard mirror handle is internally provided with a battery bin which is connected with a circuit board of the display by virtue of positive and negative electrode wires penetrating through the rotating head.

3. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the spray head is embedded in the stainless steel pipe and protrudes out of the front end of the stainless steel pipe; the interior of the spray head is of a hollow structure, the front end of the spray head is of a hollow conical shape, and the rear end of the spray head is of a hollow cuboid; the front end of the spray head is provided with a small hole communicated with the outside, and the rear end is provided with a thin pipe connected with a local anesthetic conveying pipe.

4. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the front end of the stainless steel pipe is provided with an arc-shaped section, the length of the arc-shaped section is 13-18cm, and the radian is 120-145 degrees.

5. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the other end of the hard mirror handle is fixed with a tail pipe which is made of a transparent soft plastic pipe, one end of the tail pipe is connected with a local anesthetic delivery pipeline extending into the hard mirror handle, and the other end of the tail pipe is connected with a bottle valve of a high-pressure bottle through threads.

6. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the high-pressure bottle is disposable, and the high-pressure gas filled in the high-pressure bottle is compressed oxygen or nitrogen; the local anesthetic liquid medicine is a treatment dose.

7. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the display can be folded at an angle of-30 degrees to 90 degrees with the hard mirror handle through the rotating head; one side of the rotary head is provided with an adjusting nut for fastening the rotary head.

8. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 6, characterized in that: the high-pressure bottle can resist high-temperature sterilization.

9. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: the middle section of the cylinder valve is provided with a clamping position; the linkage lever is Z-shaped, the tail end of the linkage lever is provided with a clamping groove, and a hole is formed in the middle folding point; the head end of the linkage lever can be inserted into the spraying key, the tail end clamping groove can be fixed with the middle section of the cylinder valve in a clamping mode, and a hole in the middle can be used for the linkage lever shaft to penetrate through.

10. A visual endotracheal intubation hard scope for airway surface anesthesia according to claim 1, characterized in that: a rear cover is arranged behind the medicine bottle bin of the hard mirror handle and is connected with the hard mirror handle through a hinge; the bottom end of the rear cover is provided with a pressing buckle which can be buckled with the lower end of the medicine bottle bin of the hard mirror handle.