52 results about "Nasal pharynx" patented technology

The invention discloses an intelligent classification and recognition method for ear-nose-throat lesion images, and relates to the technical field of image recognition, and the method comprises the steps: synchronously collecting a nasopharynx white light image and an i-Scan image, screening an image meeting a quality standard, carrying out the correlation of pathology and grading labeling, and constructing a data set containing a multi-center case; the white light image and the i-Scan image are subjected to denoising processing, key mark points are extracted, image registration is completed, a mucous membrane surface area, a submucous membrane blood vessel area and a lymphatic tissue enrichment area are divided through semantic segmentation, and feature enhancement is carried out on different areas; extracting morphological features and textural features from the enhanced image, calculating feature importance weights and fusing the feature importance weights into low-dimensional feature vectors; the benign and malignant dichotomy model and the pathological type multi-classification model are respectively constructed, and classification results are output in combination with a doctor diagnosis rule base and verification indexes, so that the accuracy and clinical practicability of ear-nose-throat lesion diagnosis are remarkably improved.

The invention provides a nasal tracheal catheter and a nasopharyngeal cavity three-dimensional sensing method. The method comprises the following steps: generating a geometric three-dimensional surface model of a nasopharyngeal cavity; associating pressure information of the outer wall of the front end of the catheter to a nearest coordinate point area on the geometric three-dimensional surface model, and marking on the geometric three-dimensional surface model through a preset threshold value to obtain a plurality of high-pressure contact points; determining the extension strength in the surface normal direction of the geometric three-dimensional surface model by taking each high-voltage contact point as the center; performing curved surface reconstruction on all the high-voltage contact points based on the extension strengths corresponding to different high-voltage contact points to obtain a safety boundary curved surface enveloped outside the geometric three-dimensional surface model; and performing spatial position judgment on a short-term predicted movement track of the catheter and the safe boundary curved surface, and generating a three-dimensional sensing path of the catheter in a safe passing area in the nasopharyngeal cavity according to a judgment result. By the adoption of the scheme, three-dimensional spatial perception of interaction force between the catheter and nasopharyngeal cavity tissue can be achieved.

The invention belongs to the technical field of medical materials, and provides a nasogastric tube based on synergistic resistance reduction and lubrication of a micro-nano texture and antibacterial hydrogel, and the nasogastric tube comprises an anti-friction resistance-reducing surface with a micro-nano structure and a hydrophilic antibacterial hydrogel coating. A traditional nasogastric tube is mostly made of polymer materials such as polydimethylsiloxane, the hydrophobic surface of the traditional nasogastric tube is prone to generating large insertion resistance in the intubation process, and discomfort and pain of nasopharynx and esophagus and even inflammation infection are brought to a patient. The resistance in the insertion process is remarkably reduced by combining the hydrophilic hydrogel pattern layer, so that the wettability is enhanced, the smoothness during insertion and extraction is improved, and the mechanical stimulation to the nasal cavity and throat tissues is reduced. The hydrophilic antibacterial hydrogel coating is coated on the surface of the nasogastric tube, so that the structural design not only improves the comfort of a patient in the use process, but also endows the tube body with certain antifouling and antibacterial properties, and reduces the risk of occurrence of discomfort related to bacterial infection and friction.

The utility model discloses a multifunctional bedside nasojejunum nutrition tube placement training device which comprises a head and neck bionic block, a nasopharyngeal cavity channel is arranged in the head and neck bionic block; the pleuroperitoneal cavity frame comprises a hard simulation frame and bionic skin covering the hard simulation frame. Wherein the head and neck bionic block and the pleuroperitoneal cavity frame are integrally formed or detachably connected. A bionic esophagus, a bionic stomach, a bionic duodenum and a part of bionic jejunum which are sequentially connected are arranged in the pleuroperitoneal cavity frame, and a bionic cardia and a bionic pylorus are arranged at the head end and the tail end of the bionic stomach respectively. A bionic inferior vena cava, a bionic abdominal aorta, a bionic mesenteric superior vein and a bionic mesenteric superior artery are further arranged in the pleuroperitoneal cavity frame; the bionic inferior vena cava and the bionic abdominal aorta are arranged on the rear sides of the bionic stomach and the bionic duodenum, the bottom ends are closed, and the head ends penetrate out of the bionic skin; the bottom ends of the bionic superior mesenteric vein and the bionic superior mesenteric artery are closed, and the head ends of the bionic superior mesenteric vein and the bionic superior mesenteric artery partially wrap the bionic duodenum and then penetrate out of the bionic skin.

The invention belongs to the technical field of medical experimental animal models, and discloses a small animal model for skull base high-flow cerebrospinal fluid leakage and skull base reconstruction as well as a construction method and application of the small animal model. The technical obstacle that due to the fact that the nasal cavity of a small animal is narrow and the turbinate structure is complex, surgical instruments cannot reach the skull base through the nose is overcome, meanwhile, a modeling and repairing area is arranged on the rear nasal meatus and the top wall of the nasopharynx, and the temperature and humidity conditions and environment of the nasal mucosa are reserved; and the microenvironment for tissue healing after the endoscopic transnasal skull base surgery is restored on the pathophysiological level. The dissected marking points are clear, and compared with narrow anterior skull base low-flow cerebrospinal fluid leakage of small animals, the standardized bone defect constructed in the middle skull base butterfly saddle area can cause continuous and high-flow cerebrospinal fluid leakage; autologous bone flap and free mucous membrane repair is used, the method is the same as current clinical practice, and a new platform can be provided for screening of skull base repair materials or operation evaluation and retrograde intracranial infection research after an operation.

The present invention relates to a device for determining tongue position from measurement of intraoral vacuum pressure generated by swallowing, the device comprising an intraoral screen intended to be placed in the oral cavity, a conduit connectable at a first end to the intraoral screen and at a second end to a manometer, which is in turn connectable to a base, and an electronic module connectable to the base, the electronic module being in data communication with the manometer and including a processing unit, such that in an operative state of the device, the intraoral screen is configured to shield interdental spaces in the oral cavity, and the conduit establishes fluid communication between the interior of the oral cavity and the manometer, whereby negative pressure generated by swallowing is measured by said manometer.

The invention provides a mouth-nose combined multi-arm nasopharynx skull base surgical robot, and relates to the technical field of nasopharynx skull base surgeries, the mouth-nose combined multi-arm nasopharynx skull base surgical robot comprises a mounting plate, a first surgical arm and a second surgical arm are arranged on the mounting plate, a first positioning integration and a second positioning integration are integrated in the first surgical arm, a third positioning integration is integrated in the second surgical arm, and the first positioning integration and the second positioning integration are integrated in the mounting plate. The first positioning integration, the second positioning integration and the third positioning integration are each internally provided with an upper arc-shaped plate. According to the device, the auxiliary knife arm, the lens arm and the main knife arm are arranged, the auxiliary knife arm and the lens arm can enter from the nasal cavity, the main knife arm can enter from the oral cavity, the design can better cope with a bent approach and an operation scene requiring complex operation, an operation area can be observed and operated from multiple angles, a clear visual field is provided, and the operation efficiency is improved. A doctor can more accurately judge the relation between the lesion position and surrounding tissue, and the problems caused by the leverage effect of a rigid straight sheath in a traditional natural orifice surgical robot are solved.

The visual nasal tracheal catheter comprises a catheter body, the air inlet end of the catheter body is connected with a breathing machine connector, and the air outlet end of the catheter body is provided with an arc-shaped insertion part. Air vents are formed in two sides of the insertion part to form an arch-bridge-shaped front end, and a camera assembly is arranged at the arch-bridge-shaped front end; a first air bag is arranged on the catheter body close to the air outlet end; a second air bag is arranged in the middle section of the catheter body; a bending structure is arranged at the end, close to the breathing machine connector, of the catheter body. The two sides of the insertion part at the front end of the visible nasal tracheal catheter are provided with the air vents, the top end of the visible nasal tracheal catheter forms the arch-bridge-shaped front end, and when the ventilation catheter is inserted into a nasal cavity, the arch-bridge-shaped front end serves as the foremost end to make contact with the nasal cavity and cannot scratch nasal mucosa; the camera assembly is arranged at the front end of the arch bridge shape, visualization of the nasopharyngeal catheter insertion process is achieved, and therefore damage to nasal mucosa in the insertion process is effectively reduced or avoided, and the one-time insertion success rate of the nasotracheal catheter is remarkably increased.

The utility model provides a nasopharyngeal tumor radiotherapy flushing device belongs to medical instrument technical field. Including liquid storage bottle, the two sides of liquid storage bottle are equipped with the holding area, the bottom fixed connection of liquid storage bottle has the connecting pipe, the top of liquid storage bottle is connected with the flushing pipe threadedly, adjusting assembly, adjusting assembly is used for changing the area of liquid medicine flushing, adjusting assembly is connected with the flushing pipe, prevent backflow assembly, prevent backflow assembly is used for preventing the water backflow after flushing, prevent backflow assembly is connected with liquid storage bottle, can change the flushing area through setting adjusting assembly, utilize the initial state of shower nozzle to carry out the flushing in the inside of nasal cavity, through the rotation sealing sleeve, the shower nozzle extends upward, and the spout opens, realizes the overall flushing to the four around of nasal cavity, ensures that there is no flushing dead angle. When encountering blood scab and other difficult cleaning material, still can pass through the reverse rotation sealing sleeve, enhances the water pressure of shower nozzle port, promotes the cleaning effect.

An oral and nasal tracheal intubation assistance device for assisting in endotracheal intubation includes an esophageal plug portion and a ramped guidance portion. The oral and nasal tracheal intubation assistance device temporarily occludes the esophageal inlet while providing a guided pathway for endotracheal tube placement into the trachea. The oral and nasal tracheal intubation assistance device includes a handle with an ergonomic grip oriented perpendicular to the body via a curved transition portion. Two primary embodiments are disclosed: an oral version for orotracheal intubation and a nasal version for nasotracheal intubation. The ramped guidance portion includes a capture segment and a guidance segment that work in concert to redirect and guide the endotracheal tube toward the tracheal inlet. The oral and nasal tracheal intubation assistance device provides a standardized approach to both oral and nasal intubation procedures while improving first-pass success rates.

The utility model relates to the technical field of medical instruments, and discloses a disposable nasopharyngeal airway which comprises an airway body, a first air vent is arranged at the left end of the airway body, a second air vent is arranged at the right end of the airway body, and a soft rubber block is arranged on the outer wall of the left end of the airway body. According to the nasopharyngeal airway, one end of the first ventilation opening of the airway body is inserted into the nasal cavity of a patient, the nose wing of the patient can be clamped between the connecting rod and the airway body, the effect of stably fixing the nasopharyngeal airway is achieved, the soft rubber block is arranged at the first ventilation opening, the discomfort of the patient is reduced, and the situation that the patient moves randomly is avoided; the discomfort of the patient is reduced, and the comfort of the patient is enhanced.

The invention relates to a device for determining the position of the tongue by measuring the vacuum pressure in the mouth resulting from swallowing, comprising an intraoral septum arranged in the mouth, a catheter connected at one end to the intraoral septum and at the other end to a pressure gauge arranged to a base, and an electronic module cooperating with the base. The electronic module is in data communication connection with the pressure gauge, the electronic module comprising a processing unit such that, in the operating conditions of the device, the intraoral septum is configured to obstruct the interdental spaces in the mouth and the catheter establishes communication between the inside of the mouth and the pressure gauge, so that the negative pressure resulting from swallowing is measured by the pressure gauge.

This disclosure provides a method for evaluating the prognosis of a head and neck cancer patient. The head and neck cancer may be human papillomavirus positive (HPV+) and originate in the upper aerodigestive tract (e.g. oropharynx, nasopharynx, nasal cavity, sinus, or hypopharynx). In addition, the disclosure provides a method for predicting a response of a head and neck cancer patient to a selected treatment. The disclosure also provides a method for generating an improved head and neck cancer biomarker signature for patient prognosis and uses thereof.

The present application belongs to the technical field of medical devices, and particularly relates to a nasal oxygen supply device, which comprises a nasopharyngeal tube and an oxygen supply tube; one end of the oxygen supply tube away from the nasopharyngeal tube is connected with an oxygen supply device; an adjusting valve is arranged between the nasopharyngeal tube and the oxygen supply tube; the adjusting valve comprises an oxygen supply chamber, a connecting chamber, a control chamber, a control cavity, a pressure relief chamber, an elastic diaphragm and an adjusting rod; one end of the oxygen supply chamber is in communication with the oxygen supply tube, and the other end is provided with an oxygen supply hole; the oxygen supply chamber is in communication through the oxygen supply hole; one end of the connecting chamber away from the oxygen supply chamber is connected with the control chamber and the nasopharyngeal tube at the same time; the control chamber is connected with the pressure relief chamber; one end of the pressure relief chamber away from the control chamber is provided with a pressure relief port; the elastic diaphragm is arranged between the control cavity and the adjusting chamber; the elastic diaphragm is connected with the adjusting rod; the outer wall of the adjusting valve is provided with an adjusting knob and an adjusting spring; the adjusting knob is in threaded connection with the adjusting valve; one end of the adjusting spring is in abutment with the adjusting knob, and the other end is in abutment with the adjusting rod.

The invention discloses a nasal delivery double-chain RNA / Mn < 2 + > nano-drug as well as a preparation method and application thereof in immunotherapy. And adding the polymer into a solution containing double-stranded RNA and manganese salt, and self-assembling to form the nasal delivery double-stranded RNA / Mn < 2 + > nano-drug. The invention provides a new technical scheme for the barrier of the BBB. The nano delivery system has the advantages in the aspects of overcoming the BBB and improving the in-vivo biological distribution of the drug, and the surface of the nano carrier is modified with a ligand targeted to an endothelial cell overexpression receptor, such as ApoE peptide and the like, so that the drug can be delivered to penetrate through the BBB; a non-invasive nasal-brain delivery strategy becomes a new scheme for improving drug availability and reducing toxic and side effects, the drug can bypass BBB and rapidly enter brain parenchyma through olfactory bulb and trigeminal nerve conduction pathways, and an immune drug delivered by the nasal cavity can rapidly enter nasopharynx-related lymphatic tissue (NALT) and is transferred to CLN through a lymphatic network around the nasal cavity, so that the immune drug can be rapidly delivered to the nasopharynx-related lymphatic tissue (NALT). Further, a potent local immune response aiming at the in-situ GBM is induced.

The invention provides a convenient-to-operate soft palate protective sleeve with sleeve guide, and relates to the technical field of soft palate protective sleeves, the convenient-to-operate soft palate protective sleeve comprises a nasal cavity sling, an oral cavity sling is arranged on the side surface of the nasal cavity sling, and an unfolding mechanism is arranged between the nasal cavity sling and the oral cavity sling; the expansion mechanism is used for expanding the protection sleeve in the oral cavity to protect the soft palate, a sleeve is slidably installed on the surface of the nasal cavity sling and the surface of the supporting mechanism, and a pipeline is arranged in the center of the sleeve. The protective sleeve is guided to sequentially pass through the nasopharynx and the oropharynx and is smoothly led out of the oral cavity by means of the tubular structure, medical staff do not need to repeatedly test and adjust the position, and operation time is greatly shortened.

The present application relates to the technical field of medical devices, in particular to a nasal administration device for ear-nose-throat and head-neck surgery, comprising an air filtering assembly and a powder administration assembly, the air filtering assembly comprises an activated carbon filter screen and an antibacterial filter screen, the activated carbon filter screen and the antibacterial filter screen are built-in in an air inlet pipe, the air inlet pipe is screw-connected to a joint, the powder administration assembly comprises a nozzle, the nozzle is screw-connected to a contraction pipe, the contraction pipe is integrally formed with the air inlet pipe, a sealing element is arranged between the contraction pipe and the nozzle, the nozzle is provided with a powder inlet pipe, a piston is arranged in the powder inlet pipe, the nozzle is communicated with a throat pipe, the throat pipe is connected to an expansion pipe, and a first eccentric hole is arranged at an outlet end of the expansion pipe. The present application adopts an eccentric design, so that the dry powder sprayed from the second eccentric hole is directed to the outside of the nasal cavity, the dry powder and airflow are prevented from impacting the nasal septum, and the spray is prevented from directly impacting the nasopharynx to cause irritation, so that the absorption effect of the dry powder reaches the best.

The application discloses a posterior naris filling device with a ventilation tube, which comprises a blind end, a ventilation tube body and a filling capsule body, wherein the filling capsule body is fixedly arranged in the blind end and covers three fourths of the surface of the blind end; a ventilation hole is arranged in the region of the blind end which is not covered by the filling capsule body; and the rear end of the blind end is communicated with the ventilation tube body. The posterior naris filling device with the ventilation tube is inserted into the nasal cavity and the nasal meatus or the inferior nasal meatus, the filling capsule body fills the posterior naris, the ventilation tube body supplies air to the rear end of the nasal cavity of the patient through the ventilation hole of the blind end, the pain of the patient during the filling process and after the filling is reduced, the blind end is adapted to the shape of the nasopharynx and is fixed by the filling capsule body, and the blind end is not easy to move with the swallowing activity, so that the patient can also breathe through the nose after the filling, the discomfort after the filling is greatly reduced, and the treatment effect and the comfort of the hemostasis by filling are greatly improved.

A method for intranasal delivery of a formulation comprising Botulinum toxin for the treatment of allergic rhinitis involved impregnating an absorbent tip of an applicator with the formulation, the applicator having a rigid rod having the absorbent tip at a distal end thereof, and inserting the applicator straight into a nasal cavity of a patient beneath the lower turbinates to target the nasal- or nasopharynx-associated lymphoid tissue (NALT) and the eustachian tube opening zone of the nasopharynx within the nasal cavity with the absorbent tip.

The invention relates to a medicated thread for treating nasopharynx cancer, a preparation method and a treatment method, and belongs to the field of medical treatment, the medicated thread is prepared by fusing toad skin small molecule peptide extracted by soaking with acetic acid, iron ions provided by medicinal ferrous sulfate and iodine glycerin. The treatment method comprises the following steps: precisely embedding the medicated thread into a nasopharyngeal tumor under the guidance of a nasal endoscope, and combining microwave treatment after 3-5 days. The synergistic effect of the Fenton reaction initiated by iron ions and the tumor anti-oxidation system inhibited by the toad skin small molecule peptide effectively induces ferroptosis of tumor cells, and the treatment effect is enhanced by combining the heat effect of microwaves. According to the invention, minimally invasive targeted therapy is realized, anti-tumor immunity of a body can be activated, and a new treatment strategy is provided for nasopharynx cancer.

Electrical stimulation devices and associated systems and methods are disclosed herein. In some embodiments, the electrical stimulation device comprises an elongated member configured to be orally or nasally inserted into a patient's pharynx. The device may further include a conductive element carried by a distal portion of the elongated member and configured to deliver stimulation energy to nearby tissue. A stiffness of the elongated member may vary along its length to facilitate insertion of the elongated member through the nasopharyngeal junction and provide a restoring force necessary to hold the conductive element in apposition with tissue at the treatment site.

This utility model discloses a device for nasopharyngeal ventilation, belonging to the field of medical device technology, to solve the problem of pressure sores easily caused by prolonged insertion of a nasopharyngeal airway. The device includes an airway body and an airbag. The airway body includes an airway outlet connector located at the end of the airway body inserted into the patient's pharynx. The airbag is located at the other end of the airway body and arranged around it. The airbag includes a fixed end and a supporting end. The fixed end is fixedly connected to the other end of the airway body, and the supporting end extends radially outward along the airway body. This nasopharyngeal ventilation device provides flexible protection for the patient's lip skin, thereby preventing pressure sores.

The application discloses a nasopharyngeal adenoid collector, which comprises an inner sampling structure, a middle sampling structure and an outer protective structure. The inner sampling structure comprises a metal wire, a base and a brush sampling head. The middle sampling structure comprises a metal tube, a middle tube base and a net bag sampling structure. The outer protective structure comprises an outer tube base and a sheath tube. In the use state, the middle tube base is clamped on the outer tube base by rotating the middle tube base, the brush sampling head and the net bag sampling structure are ejected by pressing the base to extrude the driving structure arranged between the middle tube base and the outer tube base, the middle tube base is clamped on the outer tube base by rotating the base, and the brush sampling head and the net bag sampling structure are sampled by rotating the base. The embodiment can simplify the sampling steps, shorten the sampling time, reduce the pollution of the sample in the nasal cavity and the pollution of the sample in the air, and improve the experience of the user.

1. The name of the design product: double channel nasopharyngeal airway. 2. The use of the design product: for placing from the nostrils into the pharynx of a patient, creating a temporary artificial respiratory airway for the patient. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

Disclosed is the in vitro use of at least one lectin which recognises the fucose alpha(1-2) galactose unit for labelling cancer stem cells of organs involved in respiration, in order to obtain labelled cancer stem cells of organs involved in respiration, in a biological sample. In one particular embodiment, the at least one lectin is chosen from the lectins Ulex Europaeus agglutinin 1 (UEA-1) or the homologue thereof, Trichosanthes japonica agglutinin II (TJA-II), Agaricus Bisporus agglutinin (ABA), Amaranthus Caudatus agglutinin (ACA), jacalin, Griffonia Simplicifolia lectin I (GSL-I) and Griffonia Simplicifolia lectin II (GSL-II). In one particular embodiment, the organ involved in respiration is chosen from the lungs, the larynx, the pharynx, the mouth, the nose, the throat, the tongue, the sinuses, the trachea and the saliva glands including the tonsils and the parotid gland.

The invention provides a bilateral general pressure regulating type high-flow nasopharynx breather pipe which comprises a nasopharynx breather pipe body, a nasal pipe connector communicated with the tail of the nasopharynx breather pipe body in a sealed mode and an oxygen supply connector used for being connected with an oxygen source which are sequentially connected, and the nasal pipe connector and the oxygen supply connector rotate in a matched and limited mode corresponding to the connecting portion and are provided with corresponding adjustable pressure relief openings. The position and the size of the left side or the right side of the adjustable pressure relief opening are adjusted through rotary displacement of the nasal tube connector and the oxygen supply connector, the device is universal in the left nasal cavity and the right nasal cavity, the PEEP effect during high-flow oxygen inhalation can be adjusted, respiratory support is implemented, and the device is simple in structure, low in cost, disposable, safe and reliable.

The invention discloses a multi-balloon imbedded nasopharyngeal tamponade device, which comprises a tamponade body, the tamponade body comprises a flexible outer layer and a support catheter, the support catheter extends along the axial direction, and the flexible outer layer wraps the support catheter; the ends, facing the filling body, of the air bag units extend to form inflation openings, and the multiple air bag units are arranged between the flexible outer layer and the supporting catheter and distributed in the circumferential direction; the air inflation assembly is arranged at one end of the filling body and communicates with the air inflation opening, and the air inflation assembly can be used for independently inflating each air bag unit; a breathing channel is formed in the packing body and penetrates through the flexible outer layer and the supporting catheter. The technical scheme can adapt to the irregular nasopharyngeal cavity form, multi-point independent pressure regulation and control are provided to achieve uniform compression hemostasis, and meanwhile smooth ventilation of the nasal cavity is guaranteed.

The utility model discloses a protection type throat swab which comprises a plastic rod, a cotton swab head, a protection structure and an opening structure, the cotton swab head is arranged at the front end of the plastic rod, the protection structure is arranged on the plastic rod, and the opening structure is arranged on the plastic rod. The protection structure comprises a sliding groove, a fixing base, a fixing ring base, a sliding column, a limiting rotating groove, a supporting rod, protection paper, a pull wire, a limiting base, a fixing column and a rubber band, the sliding groove is formed in the side wall of the plastic rod in a penetrating mode, and the fixing base is fixedly arranged on the plastic rod. The utility model belongs to the technical field of throat swabs, and particularly relates to a protective throat swab, which effectively solves the problems that the throat swab is formed by adding a cotton swab head at the front end of a plastic rod, is simple in structure and does not have a protective effect during use, and when the throat swab is used for checking oropharynx and nasopharynx parts, a detected person is easy to sneeze, a large amount of droplets are sprayed to medical personnel, and the medical personnel are affected. And the infection risk of medical staff is increased.

The utility model relates to the technical field of medical instruments, and discloses an anti-compression nasopharyngeal anesthesia nasal mask which comprises a nasopharyngeal anesthesia mask body, a double-oxygen-supply connector is arranged outside the nasopharyngeal anesthesia mask body, an oxygen connector is arranged outside the double-oxygen-supply connector, a pressing device is fixedly connected to the top of the oxygen connector, and the pressing device is fixedly connected to the top of the oxygen connector. The front side of the nasopharynx anaesthetic mask is provided with an anesthesia injection port, the anesthesia injection port is provided with a throat anesthesia delivery tube, the outside of the nasopharynx anaesthetic mask is fixedly connected with an inflation valve, and the throat anesthesia delivery tube is of a replaceable structure. According to the nasopharynx anaesthetic mask, the nasopharynx anaesthetic mask can provide high-flow oxygen through the double oxygen supply connectors, the oxygen can rapidly enter pulmonary alveoli, the oxygen concentration is improved, the flexibility and adaptability of anaesthesia are enhanced through the throat anaesthesia delivery tube, the gas flow is allowed to be accurately controlled through combination of the inflation valve and the flow adjusting device, and too high pressure is prevented from being accumulated in the mask; therefore, the safety and the effect of anesthesia are improved.

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.