31 results about "Epiglottis" patented technology

The invention discloses an integrated front-end driving, active steering and visual digestive tract catheterization system, which belongs to the field of medical apparatus and instruments, and comprises a guide arm comprising a pull wire and an elastic arm, the guide arm is provided with a first end and a second end deviating from each other, and one end of the pull wire is fixedly connected to the first end; the lens is arranged at the first end; the driving part comprises a first annular balloon, a second annular balloon and a cylindrical balloon, and the first annular balloon and the second annular balloon are fixedly connected to the two sides of the cylindrical balloon in the axial direction respectively; when the annular balloon is full, the outer wall expands in the radial direction; when the cylindrical balloon is full, the outer wall extends in the axial direction; the fixing sleeve comprises a flexible sleeve and a connecting base which are fixedly connected, the connecting base is connected with the second end of the guide arm and the first annular balloon, and the end, deviating from the connecting base, of the flexible sleeve penetrates through the driving part and extends in the direction deviating from the guide arm. Through the arrangement, the front end of the nasointestinal tube can be guided and driven at the epiglottis of the nasal cavity and the upper and lower digestive tracts.

The invention discloses a tracheal intubation path feature extraction method and device based on AI analysis, and relates to the technical field of intelligent medical robotics.The method comprises the steps that an optical flow method is used for preprocessing an input matrix, an epiglottis deformation displacement field is calculated, the epiglottis deformation displacement field is imported into ANSYSMechical for finite element analysis, and a three-dimensional tracheal path topological graph is obtained; carrying out fluid-solid mechanical joint simulation on the three-dimensional air pipe path topological graph by adopting a COMSOLMultiphysics multi-physics coupling solver, so as to obtain a lifting parameter; an impedance control instruction is generated according to the lifting parameters, and the cooperative mechanical arm is driven to execute the impedance control instruction; and on the basis of the multi-modal data of the laryngoscope after the impedance control instruction is executed, updating the material parameters of ANSYSMechical through a strategy gradient algorithm. According to the method, the problem that optimization of closed-loop feedback driving parameters is missing is solved through a target function gradient direction and step size zooming mechanism.

An airway device includes an outertube and a scope channel partially enclosed by the outertube. An intraluminal space in the outertube, not occupied by the scope channel, provides a passageway for air flow to the patient. An esophageal cuff is disposed distally on the scope channel. When inflated, the esophageal cuff secures the airway device in the proximal esophagus of the patient and helps to prevent gastric reflux by mechanically blocking gastric content from entering into the larynx. An inflatable bladder is attached at an anterior surface of the scope channel between the esophageal cuff and a distal opening of the outertube. When inflated, the bladder forms a tubular ring that pushes against the epiglottis and / or other soft tissue towards a wall of the hypopharynx to produce an unhindered air passage into the patient's trachea.

The invention provides a separable epiglottis traction device for hard laryngoscopy, and relates to the technical field of medical instruments. The separable epiglottis traction device for hard laryngoscopy comprises a handle, a programmable control displayer is arranged on the upper end face of the handle, a connecting piece is fixedly connected to the lower end of the handle, a connecting base is arranged at the lower end of the connecting piece, and a connecting bent pipe is fixedly connected to the lower end face of the connecting base. The end, away from the connecting base, of the connecting bent pipe is fixedly connected with a throat-entering bent pipe, a traction structure is arranged in the throat-entering bent pipe and comprises an arc-shaped clamping plate, and a groove is formed in the end, away from the connecting base, of the arc-shaped clamping plate. A second micro gear motor drives a driving rod to rotate, the driving rod drives an arc-shaped clamping block to rotate, so that the arc-shaped clamping block and the front end of an arc-shaped clamping plate are unfolded, then the second micro gear motor is controlled to be started in the reverse direction to clamp and support the epiglottis, and the epiglottis is conveniently clamped and pulled.

This invention relates to a highly active effective fraction of the Epiglottis-Clearing Decoction and its application in the preparation of antitussive drug compositions, belonging to the field of traditional Chinese medicine extract technology. The effective fraction contains hydroxysaffron yellow A, paeoniflorin, naringin, and neohesperidin, with the total content of these four components not less than 20% of the total mass of the effective fraction. The effective fraction of this invention is prepared by purification with macroporous resin. Compared with the freeze-dried powder of the traditional Epiglottis-Clearing Decoction, the total content of the four active ingredients is increased from 3.32% to 20.87%, achieving a more than 6-fold high-efficiency enrichment. Animal pharmacodynamic experiments show that the antitussive effect of a low dose (275.5 mg / kg) of this effective fraction is comparable to that of the freeze-dried powder of the original decoction (1928 mg / kg), reducing the dosage to about 1 / 7 of the original formula, demonstrating a significant "synergistic effect with reduced dosage" technical effect. The effective active ingredients provided by this invention have a clear content and stable quality, and can be made into modern preparations such as tablets, capsules or granules, solving the problems of large volume, inaccurate dosage and poor patient compliance of traditional decoctions.

A simulated airway for training and practicing medical procedures has an upper jaw having simulated teeth, a nasal passage, a tongue, an epiglottis, a larynx, a trachea, an esophagus, and vocal cords. Portions of the airway are reinforced with fabric. A method of making a human airway model for simulation of medical procedures includes sculpting a core for a mold from a resin material, depositing a layer of clay on the core, and placing the core in a mold. The layer of clay is removed and a polymer is injected into the mold.

This product is a lip piece for nasal breathing during sleep. Traditionally, mouthpieces are worn between the upper and lower teeth inside the mouth, but this lip piece is placed between the upper and lower gums and lips, covering the entire lip, and has a slightly elongated ring shape. It utilizes the principle that even ordinary people can achieve nasal and diaphragmatic breathing by opening their mouths wide like singers. One piece can be fitted to set two sizes, slightly elongated vertically and slightly horizontally. This allows for adjustments to the size of the person's mouth and jaw closure, adjustment of the amount of air, and multi-purpose use such as daytime fitting practice or nighttime sleep use. The material is synthetic resin, and you can choose between a harder (plastic) and a softer (elastomer) version. When this product is worn on the lips, the larynx opens, ensuring an open airway during sleep, allowing for smooth nasal breathing, and preventing snoring and sleep apnea. Furthermore, since it prevents mouth breathing even when the mouth is open, it can prevent various problems associated with mouth breathing. It can be used by a wide range of ages, from infants with underdeveloped lower jaws who grind their teeth, to adults with teeth clenching, dry mouth, temporomandibular joint disorders, and elderly people at risk of aspiration, and is harmless. Once the discomfort of wearing it is overcome, it promotes restful sleep with light and safe nasal breathing. Other benefits include improved blood flow to the muscles around the mouth, while at the same time creating a slight tension in the lips, which is good for blood flow to the brain. The lips relax and the salivary glands work, so saliva is produced, but the structure prevents saliva from spilling out of the mouth. The base of the tongue is more easily moved forward, so the epiglottis (the lid for swallowing) moves. It is also expected to help prevent silent aspiration pneumonia.

The application discloses a swallowing-aspiration double-channel simulation device and method capable of evaluating food aspiration risk, and belongs to the technical field of food science and swallowing physiology simulation. The device comprises an oral cavity cavity, a pharyngeal cavity channel, a downstream bifurcated esophagus channel and a trachea channel, an epiglottis turnover mechanism for simulating normal closing, delayed closing or incomplete closing of the epiglottis, a multi-modal detection module for monitoring food sample volume, flow rate, pressure and particle conditions, and a control module for accurately controlling the action of the epiglottis turnover mechanism and synchronously collecting data. After a food sample to be detected is placed in the oral cavity cavity, a swallowing mode is selected, the swallowing simulation is started, and detection data are collected in real time. Through data analysis, the aspiration volume fraction is calculated, so that the aspiration risk grade of the food sample is quantified. The application provides a systematic, controllable and quantitative tool for evaluating food aspiration risk, and provides a scientific basis for the research and development of special food for special groups.

The utility model discloses a multifunctional trachea cannula catheter which comprises a base section and a pilot section. The multifunctional trachea cannula catheter is provided with an oxygen channel and a working channel side by side, the oxygen channel and the working channel both penetrate through the pilot section and the basic section, and the pilot section is suitable for being in a normal state and keeping a bending angle relative to the basic section during use. Compared with the prior art, the catheter has certain hardness, when the catheter is inserted into the oral cavity and the glottis, the catheter does not need to swing and twist for plasticity, and the catheter is not prone to bending and entering the esophagus by mistake; the catheter has a certain bending angle and hardness, so that the requirement of a doctor on the backward leaning of the head of a patient is reduced during intubation; the catheter is not easy to bend due to the pressing of the epiglottis, the catheter can supply oxygen uninterruptedly, and the breathing problems such as upper airway obstruction of a patient are solved; sputum in the oral cavity can be sucked out conveniently, and the visual field is kept clear.

The invention relates to an intubation device for intubating a patient with an endotracheal tube, having the following features:a) a handle for holding the intubation device,b) a rigid guide rail which is connected to the handle and which has a guide channel, extending in a longitudinal direction from a patient-remote end to a patient-near end of the guide rail, for guiding the endotracheal tube, and has an upper face facing toward the patient's tongue during the intubation procedure,c) an epiglottis lifter for lifting the patient's epiglottis, wherein the epiglottis lifter is mounted movably on a component of the intubation device via at least one bearing element,d) at least one optical detection device in the patient-near region on the guide rail and / or at least one optical detection device in the patient-near region on the epiglottis lifter,e) wherein the epiglottis lifter, at least in the patient-near region, in particular in a bend region of the guide rail, covers and largely or completely closes the guide rail or at least the guide channel on the upper face of the guide rail.

The invention provides a flexible laryngoscope for a vocal cord fascia operation. The flexible laryngoscope effectively solves the problems that an existing laryngoscope is invariable in shape, invariable in shape and incapable of being adjusted at will in supporting strength during use, the epiglottis and the throat are very likely to be excessively supported or scratched, flexible adjustment cannot be achieved, and applicability and practicability are poor. According to the technical scheme, the device comprises a handle, a fixing cylinder is arranged on the left side of the handle, and a plurality of supporting units are arranged on the right side of the fixing cylinder; the multiple supporting units form a flexible mechanism; each supporting unit comprises a front small plate and a rear small plate, and two arc-shaped plates are arranged between the two small plates; when the arc-shaped plates on the multiple supporting units are opened at the same time, the throat can be opened; the lower ends of the small plates in the adjacent supporting units are hinged together, lead screws are arranged on the outer sides of the small plates, nuts are arranged on the lead screws, connecting rods are hinged to the nuts, and the upper ends of the connecting rods are hinged to the adjacent small plates. When the lead screws rotate at the same time, the upper ends of every two adjacent small plates are gradually close to each other, so that the flexible mechanism is of a bent arc-shaped structure.

An airway device includes an outertube and a scope channel partially enclosed by the outertube. An intraluminal space in the outertube, not occupied by the scope channel, provides a passageway for air flow to the patient. An esophageal cuff is positioned distally on the scope channel. When inflated, the esophageal cuff secures the airway device in the proximal esophagus of the patient and helps to prevent gastric reflux by mechanically blocking gastric content from entering into the larynx. An inflatable bladder is attached to an anterior surface of the scope channel between the esophageal cuff and a distal opening of the outertube. When inflated, the bladder forms a tubular ring that pushes against the epiglottis and / or other soft tissue towards a wall of the hypopharynx to produce an unhindered air passage into the patient's trachea.

The utility model provides a nasal bronchoscope operating tube which comprises an operating tube, and the rear end of the operating tube is connected with a first connector of a tee joint in a sealing mode. A second interface, on the same axis with the first interface, of the tee joint is a bronchoscope inlet, and the second interface is detachably connected with an end cover; a third interface of the tee joint is connected with a high-flow breathing humidifying therapeutic apparatus through a high-flow catheter; the operation tube which is inserted through the nasal cavity and has the front end arranged above the epiglottis is used as an entry channel of the bronchoscope; at least one air hole is formed in the side wall of the front end of the operation tube. The nasal bronchoscope operation tube serves as a bronchoscope operation pipeline, and the bleeding risk caused by nasal mucosa injury caused by movement of a bronchoscope in the operation process is reduced; meanwhile, the device can be connected with a high-flow humidifying oxygen therapy instrument, the oxygen deficit risk of the patient in the operation process is reduced, and particularly the oxygen deficit risk caused by upper airway obstruction easily occurring to some obstructive sleep respiratory syndrome and tongue retrograde falling patients is reduced.

The invention relates to the technical field of medical instruments, in particular to a supraglottic positive pressure airway and application thereof.The supraglottic positive pressure airway achieves excellent positioning precision and stability through the innovation points such as concave cavity layered design, epiglottis support, arc-shaped groove and multi-channel design, meanwhile has good ventilation and drainage functions, and has the advantages of being simple in structure and convenient to use. According to the novel structural design, the epiglottis is lifted and matched with the throat, the problem that the throat is not completely closed in the prior art can be effectively solved, and therefore the safety and effectiveness of airway management are remarkably improved, the defects in the prior art are overcome, and more reliable technical support is provided for clinical airway management.

Provided in the present invention is a flexible laryngoscope for vocal cord fascia surgery, which flexible laryngoscope effectively solves the problems whereby during use, existing laryngoscopes are fixed in terms of form and shape, and have a support force that is unable to be freely adjusted, thereby easily causing excessive support or abrasion to the epiglottis and larynx, and the existing laryngoscopes cannot be flexibly adjusted, thereby resulting in poor applicability and practicability. The technical solution for solving the problems is as follows: the flexible laryngoscope comprises a handle, wherein a fixed cylinder is provided on the left side of the handle, and a plurality of support units are provided on the right side of the fixed cylinder; the plurality of support units form a flexible mechanism; each support unit comprises front and rear small plates, and two arc-shaped plates are provided between the two small plates; when the arc-shaped plates on the plurality of support units open simultaneously, the larynx can be dilated; the lower ends of the small plates in adjacent support units are hinged together, a lead screw is provided on the outer side of each small plate, nuts are provided on the lead screws, connecting rods are hinged to the nuts, and the upper ends of the connecting rods are hinged together with adjacent small plates; and when a plurality of lead screws rotate at the same time, the upper ends of two adjacent small plates gradually approach each other, such that the flexible mechanism has a curved arc-shaped structure.

The application relates to the technical field of laryngoscopes, and discloses a detachable multifunctional soft tube mirror intubation guide, which comprises a laryngoscope blade and a laryngoscope handle fixedly connected with one end of the laryngoscope blade, and a display screen is electrically connected in the laryngoscope handle; the detachable multifunctional soft tube mirror intubation guide further comprises a support tip movably arranged at one end of the laryngoscope blade away from the laryngoscope handle, the support tip is adjusted in angle through a lifting adjusting assembly to be suitable for different patients, a camera for electrically connecting with the display screen is arranged on an extension end of the laryngoscope blade, and a telescopic lifting assembly is arranged in the laryngoscope blade and extends to one side of the support tip, so that the lifting adjusting assembly can lift the epiglottis to expose the glottis, and smooth ventilation can be realized; the detachable multifunctional soft tube mirror intubation guide solves the problems that the length and angle of the conventional laryngoscope blade are fixed, the adaptability is poor, the laryngoscope blade cannot adapt to physiological differences of throats of different patients, the glottis cannot be accurately exposed, and the quantitative adjusting structure relies on manual experience operation and is prone to cause throat injury of the patient and operation failure.

1. Name of the product in this design: Split-lens anesthesia video laryngoscope (adult airway version). 2. Purpose of this design: To expose the glottis by lifting the epiglottis of the patient in clinical practice, to guide medical staff to accurately perform airway intubation for anesthesia or emergency treatment, and can also be used for intraoral examination and treatment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A simulated airway for training and practicing medical procedures has an upper jaw with simulated teeth, a nasal channel, a tongue, an epiglottis, a throat, a trachea, an esophagus, and a vocal cord. The portion of the air passage is reinforced by a fabric. A method of manufacturing a human airway model for medical procedure simulation includes sculpturing a core for a mold from a resin material, depositing a layer of clay on the core, and placing the core in the mold. The clay layer is removed and the polymer is injected into the mold.

The assembly comprises: an endotracheal tube (10), with an external wall (11); and a suction channel (12), with a first more distal portion (13), equipped with a suction end (14), and externally attached to the external wall (11). The suction end (14) is guaranteed to occupy the supraepiglottic area of a patient (1), above the vocal cords (3), larynx (4), and epiglottis (5). The suction channel (12) has a banana-shaped cross-section, with two opposite curved segments (15, 16). The suction channel (12) has orifices (21) in the vicinity of the suction end (14). The suction end (14) ends in a bevel (22). A supraglottic barrier (described in WO 2021 / 234183 (BRAVO) (17) may be housed in the endotracheal tube (10). The invention allows suctioning performance to be improved, as well as reducing damages to the patient.

A simulated airway for training and practicing medical procedures has an upper jaw having simulated teeth, a nasal passage, a tongue, an epiglottis, a larynx, a trachea, an esophagus, and vocal cords. Portions of the airway are reinforced with fabric. A method of making a human airway model for simulation of medical procedures includes sculpting a core for a mold from a resin material, depositing a layer of clay on the core, and placing the core in a mold. The layer of clay is removed and a polymer is injected into the mold.

The invention relates to a visual nasopharynx-imbedded airway / tracheal catheter system which comprises an airway catheter internally provided with an oxygen supply airway and a laryngeal anesthesia tube imbedded in the pharynx of a patient through the oxygen supply airway, a jacking air bag is arranged on one side of the front end of the laryngeal anesthesia tube, a local anesthetic administration channel is arranged in the laryngeal anesthesia tube, and the local anesthetic administration channel is communicated with the airway catheter. A camera is arranged at the front end of the ventilation catheter, an inclined plane is arranged at the front end of the ventilation catheter, the normal direction of the inclined plane is opposite to the epiglottis direction, and an air bag is arranged at the front end of the ventilation catheter. The ventilation catheter is matched with the laryngeal anesthesia tube with the jacking cuff to penetrate into the epiglottis from the nasal cavity of a patient, the tip is guided by the camera to accurately reach and be maintained below the epiglottis and above the glottis, the soft palate, the tongue and the epiglottis can be supported, upper respiratory tract obstruction caused by collapse of the three structures due to sedation or diseases is effectively avoided, and the operation is simple and convenient. The respiratory tract smoothness is maintained.

A machine-vision guided robotic system comprises a guiding tube robotic mechanism with multiple concentric, telescopically extendable extension tubes and integrated imaging modules at their distal ends. The method for performing automated endotracheal intubation is directed by a controller that processes sequential images of anatomical regions, including the oral cavity, oropharynx, and trachea, to identify anatomical landmarks such as the teeth, epiglottis, uvula, and vocal folds. Using these features, the controller plans and executes precise robotic movements for staged advancement through the airway. The system may further adjust the curvature of the extension tubes to optimize trajectory and alignment. Once positioned, an endotracheal tube is advanced over the guiding mechanism into the trachea, after which the robotic components are retracted in reverse order. The invention enables accurate, image-guided airway access with minimal manual intervention, improving safety, repeatability, and success rates in airway management procedures.

An artificial epiglottis is provided that includes a membrane-like piezoelectric element that bends depending on a voltage; and a first driving electrode that applies the voltage to the piezoelectric element. The piezoelectric element is structurally configured to be disposed on a larynx. Based on the applied voltage, the piezoelectric element bends to either a first shape in which an entrance of a trachea is blocked or to a second shape in which the entrance of the trachea is opened.

The invention discloses an artificial larynx capable of normally sounding after total laryngeal resection, which comprises a larynx body, a first epiglottis and a second epiglottis are respectively hinged to two sides of the top end of the larynx body through shaft joints, and a connecting mechanism and a movable mechanism are respectively mounted at the upper part and the lower part of the interior of the larynx body. According to the principle that homopolar magnets are mutually detached, mutual detaching force always exists between the two corresponding magnets, so that a certain gap is always kept between the blocking blade and the inner wall of the throat body, smooth breathing is always kept under any body position, the first epiglottis gradually falls down backwards through contraction of upper, middle and lower contractive muscles of the pharynx, and the first epiglottis is prevented from falling down. Under the action of the first rod body, the second rod body and the third rod body, the second epiglottis falls down forwards, so that the first epiglottis and the second epiglottis are overlapped above the larynx body, the upper part of the artificial larynx is sealed, food is prevented from entering the trachea, and serious symptoms such as mistaken pharynx or bucking are avoided.

A nasogastric feeding cooperative airway protection device and a control method thereof, comprising a nasogastric tube body, a first air bag is arranged on the outer wall of the nasogastric tube body, and the first air bag can be inflated to close the airway and prevent aspiration when the first air bag is placed at the epiglottis; a first mark is arranged on the extranasal segment of the nasogastric tube body, the first mark corresponds to the horizontal position of the epiglottis of the first air bag, and the first mark is convenient for caregivers to quickly visually locate the tube without relying on imaging examination; a plurality of side holes in a spiral distribution are arranged on the intragastric end of the nasogastric tube body; further comprising a collection assembly and a control assembly, which are used for collecting physiological information of a user in real time, the control assembly is signal-connected to the collection assembly and the first air bag, can receive the physiological information collected by the collection assembly or the control instruction input by the outside world, and control the first air bag to perform the inflation and deflation actions, and can dynamically adjust and protect the air pressure of the first air bag in real time according to the physiological information of the user during the delivery of the nutrient solution.

The invention aims at providing a camber-adjustable intubation device which comprises a grab handle, a pushing assembly and a tongue depressing knife, the grab handle is used for being held by medical staff, a grab handle groove is formed in the grab handle, the pushing assembly is arranged at one end of the grab handle, the tongue depressing knife is arranged at the other end of the grab handle, the camber of the tongue depressing knife is adjustable, a tongue knife groove is formed in the tongue depressing knife, and the tongue depressing knife is arranged in the tongue depressing knife groove. The tongue knife groove and the grab handle groove are mutually connected to form a communicated propelling groove, the propelling groove is used for containing a catheter, one end of the catheter is flush with the end, away from the grab handle, of the tongue depressing knife, the catheter is connected with a propelling assembly, and the propelling assembly is used for driving the catheter to stretch out or retract from the end, away from the grab handle, of the tongue depressing knife. Therefore, due to the fact that the bending degree of the tongue depressing knife is adjustable, the bending degree of the tongue depressing knife can be specifically adjusted according to the oral cavity structure and the epiglottis structure of the patient, then the end, away from the grab handle, of the tongue depressing knife abuts against and hooks the epiglottis structure of the patient, and then the pushing assembly is operated to drive the catheter to stretch out of the end of the tongue depressing knife so that intubation operation can be smoothly completed.

This artificial epiglottis comprises: a membrane-like piezoelectric element that bends depending on the voltage; and a first drive electrode that applies a voltage to the piezoelectric element. The piezoelectric element is disposed on the larynx. Depending on the voltage, the piezoelectric element assumes a first shape in which the piezoelectric element blocks the entrance of the trachea and a second shape in which piezoelectric element opens the entrance of the trachea.

The invention discloses a use method of a disposable nasopharynx oxygen inhalation tube, which comprises the following steps: providing a special nasopharynx oxygen inhalation tube for obese patients, and the tube body of the special nasopharynx oxygen inhalation tube has specific length and flexibility; the individualized implantation depth is determined according to the body mass index and the neck circumference, the depth is set to be 16-18 cm for a person with the BMI larger than 40 or the neck circumference larger than 45 cm, and accurate positioning is conducted according to the scales of the tube body; after being lubricated, the nasal cavity is slowly placed into the lower edge of epiglottis and the area above the glottis along the bottom wall of the nasal cavity; the correct far-end position is confirmed through direct vision of a fiber bronchoscope; an oxygen source is connected, and the oxygen flow is initially set to be 4-10 liters per minute; the flow is dynamically adjusted according to the oxyhemoglobin saturation so that the SpO2 can be maintained to be 98% or above; the adjustable nose clip is used for fixing the tube body to prevent displacement; and removing the tube according to rules after the operation. According to the technical scheme, accurate, safe and efficient bypass oxygen supply is achieved, and oxygenation guarantee and operation reliability of obese patients in the non-intubation general anesthesia period are remarkably improved.

The utility model provides a multifunctional oropharynx airway capable of preventing tongue from falling backwards, which comprises a breather pipe, and a sputum suction pipe, an inflation pipe, an oxygen supply pipe and a carbon dioxide sampling pipe are arranged in an inner cavity of the breather pipe. The front ends of the air pipes respectively extend out of the front ends of the breather pipes and are communicated with the outside; the rear end of the sputum suction tube is close to the rear end of the breather tube, and sputum suction holes are formed in the side wall of the rear end of the sputum suction tube. An oxygen supply hole is formed in the side wall of the rear end of the oxygen supply pipe; a sampling hole is formed in the side wall of the rear end of the carbon dioxide sampling pipe; a directional air bag is arranged on the outer pipe wall of the breather pipe, and the rear end of the inflation pipe is communicated with the directional air bag. The rear end of the sputum suction hole, the rear end of the carbon dioxide sampling hole and the rear end of the oxygen supply hole are arranged in sequence from near to far according to the distance close to the rear end of the breather pipe. The problems of tongue root and epiglottis obstruction, inaccurate carbon dioxide sampling, poor oxygen supply effect and troublesome sputum suction in the prior art are solved through the inflation tube, the oxygen supply tube, the carbon dioxide sampling tube and the sputum suction tube.

The utility model relates to a disposable visual laryngoscope special for scar small mouth, which comprises a visual laryngoscope, the visual laryngoscope comprises a display screen, a laryngoscope handle and a camera probe insertion end which are connected in sequence, the visual laryngoscope further comprises a laryngoscope guide channel used for guiding the camera probe insertion end to be inserted, and the laryngoscope guide channel comprises an outer sleeve. A telescopic inner channel is arranged in the outer sleeve in a sleeved mode, a top plane with the sectional area larger than that of the outer sleeve is arranged on the top face of the outer sleeve, a tracheal catheter receding groove is formed in the side, parallel to the inner channel, of the top plane, and an insertion opening is formed in the surface of the top plane. A hollow inner cavity matched with the insertion end of the camera probe is formed in the inner channel, a transparent blind window is arranged at the tail end of the hollow inner cavity, and a lifting part used for lifting the epiglottis part is arranged at the front end of the transparent blind window. The tracheal intubation device solves various problems that a visual laryngoscope is difficult to replace, teeth are damaged, tracheal intubation fails and the like when tracheal intubation is carried out on a patient with a small scar mouth.