57 results about "Glottis" patented technology

The invention relates to the technical field of medical artificial intelligence, in particular to a difficult airway glottis feature intelligent identification method and system.The method comprises the steps that a breathing sound signal of a patient is collected through a miniature microphone embedded in a laryngeal mask, and a time-frequency graph is obtained through preprocessing; time-frequency domain feature self-adaptive extraction is carried out by adopting a three-channel parallel architecture, and a ring-shaped cartilage compression sound and a secretion interference sound are separated through a double-path noise feature learning network; capturing glottis features of different time scales from microcosmic to macroscopic by using a multi-scale glottis feature pyramid fusion technology; time sequence modeling is carried out through a BiGRU network and a time attention mechanism, and a glottis state sequence is identified; according to the method, a Cormack-Lehane grading result is determined based on a double-branch decision network and Bayesian decision reasoning, laryngoscope model recommendation is given, the difficult airway prediction accuracy rate is improved to 91.7% and is improved by 25%-30% compared with a traditional method, anesthesia related complications can be effectively reduced, and the success rate of first intubation is improved.

The invention discloses an anesthesia intubation auxiliary device, and belongs to the technical field of anesthesia instruments, the anesthesia intubation auxiliary device comprises a clamping mechanism and an adjustable fixing support arranged above the clamping mechanism, the end part of the adjustable fixing support is provided with a mounting support, and the side wall of the mounting support is sequentially provided with an opening mechanism and a U-shaped fitting plate from top to bottom; the opening mechanism downwards penetrates through the U-shaped attaching plate, an intubation positioning mechanism is arranged in the U-shaped attaching plate in a sliding mode, a follow-up centering assembly is arranged between the intubation positioning mechanism and the opening mechanism, the intubation positioning mechanism is arranged at the end, away from the adjustable fixing support, of the U-shaped attaching plate, and a laryngoscope fixing mechanism is arranged on one side of the mounting support. According to the anesthesia intubation auxiliary device, the laryngoscope fixing mechanism is arranged, the laryngoscope can be automatically fixed after the glottis is completely exposed, and therefore the hands of medical workers are liberated in the trachea intubation process, and intubation is convenient.

The invention relates to the field of medical equipment, in particular to a visual double-cavity laryngoscope and thyrocricocentesis integrated device for difficult airways, which comprises a double-cavity laryngoscope main body and a thyrocricocentesis device, the outer surface of the double-cavity laryngoscope main body is fixedly connected with a connecting plate, the other surface of the connecting plate is fixedly connected with a hemispherical shell, and the hemispherical shell is fixedly connected with the double-cavity laryngoscope main body. The integrated structural design is adopted, the core functions of a visual double-cavity laryngoscope and a cricothyroid membrane puncture instrument are organically integrated, the current situation that the two traditional instruments are independently used and need to be frequently switched is thoroughly changed, an operator can sequentially complete glottis exposure and tracheal intubation operation on the same device, and if intubation fails or a patient suffers from emergency oxygen deficit, the visual double-cavity laryngoscope and the cricothyroid membrane puncture instrument can be directly used. The cricothyroid membrane puncture device which is assembled in place can be directly used for implementing puncture without additionally replacing instruments, so that the operation continuity is greatly improved, the key time for establishing an airway is effectively shortened, and the oxygen deficit risk of a patient caused by instrument switching is fundamentally reduced.

The utility model relates to the technical field of medical instruments, in particular to a laryngoscope which comprises a handle, a tongue pressing piece connected to one end of the handle and a display device connected to the other end of the handle, the tongue pressing piece is provided with a first installation cavity, and a camera, a first laser emitting head and a second laser emitting head are arranged in the first installation cavity. The first laser emission head and the second laser emission head are respectively used for emitting a first laser beam and a second laser beam which are arranged in parallel at an interval to the glottis of a human body, and the shooting direction of the camera is parallel to the first laser beam and the second laser beam; the first laser beam and the second laser beam irradiate the glottis of a patient to form two light spots with the fixed distance, the first laser beam, the second laser beam and the two light spots and the light beam can be displayed in a display picture of the display device, and the two light spots, the first laser beam and the second laser beam can provide references for doctors. A doctor can conveniently judge the glottis size of a patient, and then the doctor can conveniently determine the specification of the tracheal catheter.

The invention relates to an airway path planning method and device based on a throat CT image and computer equipment. The method comprises the following steps: acquiring a throat CT image; the throat CT image is preprocessed, the preprocessing includes unifying thickness parameters of the throat CT image, and data expansion processing is carried out on a target layer, including the glottis part, in the throat CT image with the consistent thickness parameters in a copying mode; inputting the preprocessed throat CT image into the trained three-dimensional segmentation model for three-dimensional segmentation to obtain a segmented airway three-dimensional structure; obtaining a path constraint condition according to the obstacle differentiation weights of different areas in the divided airway three-dimensional structure; layering treatment is carried out on the divided airway three-dimensional structure, and a multi-layer airway cross section is obtained; obtaining a center point sequence based on the center point coordinates of the cross sections of the multiple layers of airways; and obtaining an initial airway path corresponding to the throat CT image based on the target point in the airway, the center point sequence and the path constraint condition.

The application discloses a foldable intubation positioning auxiliary device for a pediatric anesthesia department, which comprises a bite plate in an arc shape, a tongue depressor is connected to the side wall of the bite plate through a rotary limiting device, the front end of the tongue depressor is arranged in a downward bending shape, a piezoelectric ceramic sheet is fixedly connected to the bottom side of the front end of the tongue depressor, an intubation opening is formed in the middle part of the bite plate and is arranged in a penetrating mode, a rotating wheel is rotatably connected to the intubation opening, a pressing block is connected to one side of the intubation opening through an elastic pressing device, and one side of the pressing block is close to the rotating wheel. The piezoelectric ceramic sheet is stimulated to vibrate at low intensity to stimulate the laryngeal muscles of a child during intubation by using a mild physical stimulation mode, the glottis is naturally opened, the precision, safety and convenience of intubation operation are improved, and the device is especially suitable for obese children patients with difficulty in glottis exposure.

The utility model relates to the technical field of medical instruments, in particular to an auxiliary air pillow suitable for tracheal intubation, which comprises a shoulder bolster, a neck bolster is arranged on one side of the shoulder bolster, one side of the neck bolster far away from the shoulder bolster is communicated with a head bolster, and the neck bolster is in a slope shape. A first air bag is installed in the shoulder bolster, a second air bag is connected in the neck bolster and the head bolster, the first air bag and the second air bag are both connected with an inflation pipe, and the other end of the inflation pipe is connected with an inflation pump. According to the utility model, through the arrangement of the shoulder bolster, the first air bag is inflated, so that the placement function of a cannulation body position of a classical laryngoscope body position can be realized; through the arrangement of a head pillow and a neck pillow, a second air bag is inflated, so that the placement function of an intubation position at a flower smelling position can be realized; the two intubation body positions are placed, so that the problems of insufficient glottis exposure and high operation difficulty are solved.

The utility model relates to a visual tracheal intubation auxiliary device capable of forming intermittent jet airflow, which comprises a hollow tube, a camera and an operating handle, the camera is arranged in the front end of the hollow tube, and a ventilation gap used for jetting airflow to the front end of the hollow tube is reserved between the outer side wall of the camera and the inner side wall of the hollow tube. And an air inlet interface communicated with the opening at the rear end of the hollow pipe is arranged on the operating handle. The utility model has the advantages that jet air flow at the front end of the hollow tube can blow away oral secretions at the front end, so that the camera can always clearly display the condition in front of the hollow tube, and a better auxiliary intubation effect is ensured; in addition, the oxygen is intermittently jetted to push open soft tissues of the oropharynx of the patient, so that a wider operation visual field is provided; jet airflow impacts the vocal cord, special vibration sound can be formed, and the position relation between the tip of the tracheal catheter and the glottis can be better determined. Meanwhile, oxygen is supplied to the patient in the auxiliary intubation process, so that it is ensured that more operation time is allowed during intubation, and medical care can complete trachea intubation operation more easily.

The present application relates to a kind of multi-dimension lock regulating airway management training model, comprising: neck range of motion adjustment unit, neck range of motion adjustment unit is used to simulate the normal activity state and activity limited state of neck;Tongue body swelling simulation unit, tongue body swelling simulation unit is used to simulate the natural state and different degrees of swelling state of tongue body;Glottic area stenosis simulation unit, glottic area stenosis simulation unit is used to simulate the natural open state and different degrees of stenosis state of glottic area;Multi-dimension lock regulating airway management training model is configured to: by independently adjusting neck range of motion adjustment unit, tongue body swelling simulation unit and glottic area stenosis simulation unit, the laryngeal view of model is presented as a plurality of preset states corresponding to different levels of difficult airway.The present application can simulate different levels of difficult airway scene, accurately restore the difficult airway caused by single factor or multi-factor superposition in clinic.

The invention relates to the technical field of tracheal intubation, in particular to a bedside ultrasonic laryngeal edema and aspiration prevention tracheal intubation device which comprises an intubation component, the lower end of the intubation component is connected with an intubation head component, and a visual laryngoscope and a plurality of miniature ultrasonic probes are mounted on the intubation head component. According to the application, medicines such as glucocorticoid in the medicine temporary storage bin can be accurately atomized and conveyed to the periphery of the glottis under the action of the micro piezoelectric atomization piece, continuous low-negative-pressure suction can be performed on the upper gap of the glottis through the micro diaphragm pump according to feedback of the pressure sensing assembly, retentate on a capsule is effectively removed, and aspiration and related pneumonia are prevented; by means of fusion of ultrasonic image features and multi-sensor data, the risk of laryngeal edema can be intelligently judged, starting and stopping of atomization drug delivery and negative pressure suction of the miniature diaphragm pump are automatically controlled in a linkage mode, full-process closed-loop management from intubation positioning, intraoperative protection to intervention before tube drawing is achieved, and the risk of complications related to tracheal intubation is remarkably reduced.

This application provides a guided laryngoscope, comprising: a gripping part, a curved part, and a tongue-lifting part. The curved part is connected to one end of the gripping part and has a guide groove for guiding an intubation tube. One end of the tongue-lifting part is connected to the end of the curved part away from the gripping part and is located on a side facing the gripping part. The other end of the tongue-lifting part extends along the curvature of the curved part. The guide groove has an inlet end and an outlet end. The first angle between the extension line of the outlet end and the central axis of the gripping part is smaller than the second angle between the extension line of the end of the tongue-lifting part and the central axis of the gripping part. This design can correct the angle at which the intubation tube sinks due to gravity after leaving the guide groove, allowing the intubation tube to directly enter the glottis for observation and airway management.

The utility model provides a controllable subglottic suction connector. The controllable subglottic suction connector comprises a connecting body, a first sealing piece and a second sealing piece. The connecting body is provided with a first connecting end, a second connecting end and a third connecting end which are communicated with one another. The first sealing piece is movably installed at the second connecting end so as to control the second connecting end to be opened or closed. The second sealing piece is movably installed at the third connecting end so as to control the third connecting end to be opened or closed. The controllable subglottic suction connector at least has the following advantages that operation is flexible and convenient, pressure relief is sufficient, and the injury risk of respiratory tract mucosa of a patient is reduced; 2, the sputum suction device and the subglottic suction tube do not need to be repeatedly pulled and inserted for many times, and cross infection caused by sputum secretions and generated aerosol can be effectively avoided; and 3, the design structure is simple, materials are convenient to take, the operation is convenient, and the manufacturing cost and the use cost are low. And 4, the thumb is not in direct contact with sputum in the connecting body, so that the risk of occupational exposure of nurses is greatly reduced.

The invention provides a dynamic glottis closing judgment method and system based on deep learning, and the method comprises the steps: carrying out the frame-by-frame screenshot of a laryngoscope video, generating a series of static image frames, and obtaining a video frame sequence data set; carrying out manual frame-by-frame labeling on a glottis region in the video frame sequence data set, and constructing an image-mask paired training data set; training a G-UNet network by using the training data set, and constructing a glottis segmentation model; performing pixel-level semantic segmentation on the original static image frame of the laryngoscope based on a glottis segmentation model to obtain a glottis binary mask image; and carrying out frame-by-frame pixel-level area identification on the glottis binary mask image, calculating a glottis opening area, and obtaining a glottis closing state based on the glottis opening area. According to the technical scheme, the laryngoscope video can be processed in real time, the workload of manual observation is remarkably reduced, and the repeatability and objectivity of an analysis result are improved.

The utility model relates to the technical field of medical auxiliary instruments, in particular to an anti-pollution device for a trachea cannula, which comprises a protective cylinder, and the protective cylinder is used for protecting and wrapping the head end of the trachea cannula, so that the protective cylinder prevents the trachea cannula from being in contact with the inside of the mouth of a patient when the trachea cannula enters the airway of the patient through the glottis. When the trachea cannula is located outside the glottis, the head end of the trachea cannula is converged in the protection barrel, when the head end of the protection barrel is located near the glottis of a patient, the head end of the trachea cannula penetrates out and enters the airway from the glottis, the protection barrel wraps and protects the trachea cannula from the position between the glottis and the teeth of the patient, and the trachea cannula is not polluted by saliva when entering the airway. The grooves are formed in the two sides of the bite block and used for occlusion of a patient, meanwhile, the grooves in the upper side and the lower side conform to the staggered physiological structure of upper teeth and lower teeth in the mouth of the human body, the grooves in the upper side deviate outwards compared with the grooves in the lower side and conform to the physiological characteristics of the human body, and the matching degree between the grooves and the patient during occlusion is improved.

The invention provides a glottis change multi-mode monitoring method, device and equipment and a medium, and the method comprises the steps: obtaining audio data and image data of an oropharyngeal cavity of a patient through an audio and video collector disposed at a target position of the oropharyngeal cavity of the patient; performing data processing on the audio data to obtain target audio data with target features; respectively inputting the target audio data and the image data into a pre-trained target image recognition model and a pre-trained target audio recognition model, and respectively determining an audio recognition risk value and an image recognition risk value of the patient; according to the audio recognition risk value and the image recognition risk value, whether the laryngeal mask air leakage risk exists or not is determined. The effect of accurately monitoring air leakage of the laryngeal mask in real time is achieved, and danger caused by air leakage of the laryngeal mask in the anesthesia process of a patient is avoided.

The invention discloses a glottis state monitoring method, equipment, a product and a medium, and relates to the technical field of signals. The method comprises the following steps: acquiring a vibration signal of a throat when a user makes a sound; performing frequency domain analysis on the vibration signal to determine a harmonic structure parameter; when the harmonic structure parameter is not smaller than a preset air leakage judgment threshold value, dividing the vibration signal into a plurality of single-period vibration segments; based on the change characteristics of the vibration intensity in each single-period vibration segment, determining impact characteristic parameters; determining asymmetric characteristic parameters based on the distribution characteristics of the vibration time sequence in each single-period vibration segment; determining a first glottis state based on the impact characteristic parameter and the asymmetric characteristic parameter; and when the harmonic structure parameter is smaller than a preset air leakage judgment threshold value, determining a second glottis state. The method has the effect of improving the monitoring accuracy of the glottis state.

The present invention relates to the technical field of endoscopes, and discloses a tracheal intubation guidance method and a laryngoscope. The tracheal intubation guidance method comprises: obtaining an image to be guided for tracheal intubation guidance; inputting the image to be guided into a pre-trained tracheal structure recognition model to perform tracheal intubation structure recognition and obtain a recognition result; if the recognition result only contains a glottis structure, outputting intubation guidance information for indicating a first glottis exposure state and enabling tracheal intubation based on the glottis area and glottis area position of a target area corresponding to the glottis structure, or outputting correction guidance information for indicating a second glottis exposure state and instructing an operator to move the laryngoscope in a correction direction; if the recognition result contains other areas whose structural type is not a glottis structure, outputting correction guidance information based on the structural type corresponding to the other areas and / or the area corresponding to the other areas; the accuracy and efficiency of the tracheal intubation process can be significantly improved.

The visual guide type laryngoscope comprises a handle, a guide part and a guide groove, wherein the guide groove is integrally connected with the handle, is bent in an arc shape and is provided with an intubation tube, and the guide groove is provided with a tube inlet end and a tube outlet end; the tongue lifting lens is arranged at one end, far away from the handle, of the guide part and extends towards one side of the handle, the camera is arranged on one side of the tube outlet end of the guide groove, and the visual angle central axis of the camera is inclined towards the direction of the movement axis of the intubation tube after the intubation tube extends out along the tube outlet end of the guide groove; and the light source is arranged on one side of the camera. When the intubation operation is carried out, the intubation position can be located in the central area of a video shot by the camera, so that the intubation position does not need to be observed by repeatedly moving the laryngoscope, the intubation can be guided to the glottis more conveniently, the intubation difficulty is reduced, and the intubation success rate is guaranteed.

The present invention proposes a laryngeal paralysis diagnosis auxiliary method combined with audio and video processing, comprising the following steps: obtaining an original laryngoscope video with audio information and video information; predicting the audio information through a keyword recognition model to extract an effective phonation segment, and obtaining a first laryngoscope segment corresponding to the effective phonation segment from the original laryngoscope video segment according to the matching relationship between the audio information and the video information; detecting and identifying the glottis area in the first laryngoscope segment, and segmenting the glottis area from the first laryngoscope segment; marking the glottis area and calculating the physical properties of the glottis area, the physical properties including one or more of the glottis area area, vocal cord opening and closing angle, and vocal cord width. The present invention uses a multimodal analysis method combined with audio and video to segment the laryngoscope video, extract key video segments, and provide a variety of objective evaluation indicators for doctors to refer to, thereby improving diagnostic efficiency and quality.

The invention discloses a visual trachea cannula guide core device. The visual trachea cannula guide core device comprises a hollow guide core body, a guide wire arranged in the guide core body, a probe installed at one end of the guide wire, a rotary knob assembly arranged on one side of the guide core body and a pressing assembly arranged on one side of the rotary knob assembly. And the knob assembly is provided with a channel through which the guide core body passes and which is connected with the pressing assembly. The probe is electrically connected with an external display device through the guide wire, so that relevant information, detected by the probe, of the width and the height of the laryngeal glottis of a patient can be displayed on the external display device in real time, a doctor can observe the size condition of the laryngeal glottis of the patient in real time, a reference basis is provided for follow-up adapting to tracheal intubation tubes with different diameters, and the patient experience is improved. Meanwhile, the one-time success rate of tracheal intubation can be greatly improved, and the life safety of a patient is guaranteed; the guide wire can be driven to rotate through the knob assembly, so that the angle of the probe can be adjusted to adapt to laryngeal structures of different patients.

The application discloses a glottal state monitoring method and system based on weak supervision learning, comprising the following steps: acquiring a glottal image and point labeling the glottis, and constructing a glottal segmentation dataset; generating pseudo-labeling of the glottal boundary from the point labeling based on an automatic seed region growing algorithm, and updating the glottal segmentation dataset; designing a dynamic structure similarity loss function based on the updated glottal segmentation dataset, and training a convolutional neural network model under weak supervision; extracting a glottal image in real time from a video stream, and segmenting the real-time extracted glottal image based on the trained convolutional neural network model; displaying the segmentation result based on an operation display platform, drawing a glottal area change curve, and giving an early warning for abnormal conditions. The application solves the problem that a medical image dataset is difficult to construct, and overcomes the defect that a large amount of time is required for manufacturing an existing deep learning dataset.

The utility model discloses a tool assembly for a mouse tracheal intubation experiment in the technical field of mouse experiment devices, which comprises a support and a lighting tongue depressor, a connecting bent rod of the tongue depressor enables the whole tongue depressor to be an L-shaped long rod, a lighting lamp is arranged at the front end of the tongue depressor, and the support is of a frame structure for stable supporting. A supporting plate is attracted to a vertical plate of the support through a magnet, the lifting height position of a mouse can be adjusted, a bottom support is arranged at the bottom of the support and provided with a plurality of different slopes, the interior of the oral cavity of the mouse can be illuminated through an illuminating lamp, light can extend to the glottis of the throat of the mouse, and the front end of a tongue depressor is designed to be in an L shape, so that the mouse can be conveniently lifted through small force. The oral cavity of a mouse can be conveniently pulled forwards, illumination and tongue pressing are completed at the same time, it is guaranteed that the upper space is large enough, follow-up tracheal intubation operation is facilitated, meanwhile, the support can be supported in a front-back multi-angle mode, people of different heights and sitting heights can reasonably adjust the angle conveniently, and follow-up tracheal intubation is facilitated.

The present invention provides a method, system, and medium for constructing a human upper airway model with physiological characteristics, relating to the technical field of respiratory model construction, including: obtaining CT scan data of the human upper airway to construct an upper airway simulation model with a cartilage ring structure; constructing a generalized glottis regional motion model based on the time-varying glottis width during breathing; constructing a generalized glottis regional motion model based on the time-varying displacement of the trachea in three directions during breathing; constructing a respiratory heat transfer model based on the heat transfer process within the respiratory tract; constructing a wall heat transfer function between the larynx and the inner surface of the trachea, as well as a wall heat transfer function between the oral cavity and the pharynx; and dynamically simulating the upper airway simulation model based on multiple motion functions and wall heat transfer functions. The model construction method takes into account the deformation of the respiratory tract during breathing and the temperature regulation of the respiratory tract wall, and can construct an accurate human upper airway model.

This invention relates to an adjustable-bend video rigid endoscope for endotracheal intubation, comprising a core tube assembly and a display. The core tube assembly includes a plastic sheath, a deformable core, a suction tube, and a camera. The suction tube is inserted into the plastic sheath, with its distal end extending to the distal end of the plastic sheath. The distal end of the suction tube can be connected to a negative pressure source. The camera is fixedly mounted at the distal end of the deformable core's inner hole, and the video signal captured by the camera can be transmitted to the display. This invention allows for adjustable curvature and direction of the tube during intubation, providing visual assistance. The special material and lubricated design of the plastic sheath reduce intubation resistance, improving the smoothness of the procedure and patient comfort. This endoscope effectively addresses difficult airways caused by abnormal anatomical structures in the pharynx and larynx, such as those with preglottic masses obstructing vision, limited mouth opening, limited neck mobility, or a high glottis, further facilitating glottic exposure and improving the safety and convenience of endotracheal intubation.

An applicator apparatus has a delivery tube with differently curved tube sections along the length of the delivery tube so as to be tailored for airway topicalization during video laryngoscopy. The apparatus aims to enhance the precision and effectiveness of airway topicalization, particularly in scenarios where conventional applicators encounter challenges due to the acute angle of the laryngoscope blade. By conforming to the shape of the video laryngoscope, a sigmoidal shape of the delivery tube facilitates precise targeting of glottic structures and the posterior pharynx. This innovation is particularly beneficial for short procedures requiring endotracheal intubation, as proper topicalization is known to reduce coughing and bucking on extubation, mitigating potential surgical complications and minimizing the aerosolization of respiratory particles and viruses.

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.

The invention relates to a laryngoscope blade, and belongs to the field of medical consumables. Comprising a tubular cavity, the insertion end of the tubular cavity is closed to form an observation window, and an inner guide plate is arranged at the inner arc end of the tubular cavity. And an insertion end bottom plate is arranged at the insertion end of the tubular cavity. The inner guide plate is connected with a side guide plate, and the side guide plate extends to the front end of the tubular cavity. The side guide plate comprises a first straight plate, an inclined plate and a second straight plate which are sequentially connected, the first straight plate is located on one side of the tubular cavity, the second straight plate is located on one side of the insertion end bottom plate, and an insertion end side plate is fixed to the end, opposite to the second straight plate, of the insertion end bottom plate. The side guide plate and the inner guide plate are used in cooperation, the end of the tracheal catheter is turned through the side guide plate, the end of the tracheal catheter is made to be consistent with the area observed through the laryngoscope blade, then the tracheal catheter can be inserted into the glottis at a time after the laryngoscope blade is in place, the first-aid efficiency is improved, and secondary damage to a patient is avoided.

The utility model relates to the technical field of anechoic chambers, in particular to a single-open linkage isolation glottis which comprises an outer soundproof door and an inner soundproof door, the outer soundproof door and the inner soundproof door are arranged in parallel, the side end of the outer soundproof door is fixedly connected with a fixing block, the side end of the inner soundproof door is fixedly connected with a limiting block, and a linkage rod is arranged between the limiting block and the fixing block. The two ends of the linkage rod are rotationally connected with the limiting block and the fixing block correspondingly, a guide groove is formed in the side end of the limiting block, a magnetic attraction block is embedded in the limiting block and located in the middle of the guide groove, a mounting cavity is formed in the side end of the outer soundproof door and is of a T-shaped structure, and a sliding plate is slidably connected into the mounting cavity. The side end of the sliding plate is fixedly connected with a magnetic suction head, a reset spring is fixedly connected between the sliding plate and the inner wall of the installation cavity, the two sides of the installation cavity are both connected with movable plates in a sliding mode, and the front ends of the movable plates are fixedly connected with rubber heads.

The utility model relates to the technical field of airway opening devices, in particular to an airway opening device based on a ratchet mechanism, which comprises an opening retainer, a laryngoscope tube structure and a supporting block, the laryngoscope tube structure comprises a laryngoscope tube end part, a tube body and a pulling structure, the pulling structure is mounted on the laryngoscope tube end part, the arc-shaped tube body is mounted at the lower end of the laryngoscope tube end part, and the supporting block is mounted on the laryngoscope tube end part. An air inlet communicated with the tube body is formed in the end of the endoscope tube, a supporting block is hinged to the tail end of the tube body, a vertically-through ventilation channel is formed in the opening retainer, and the lower end of the tube body penetrates through the ventilation channel. The laryngoscope tube is reasonable and compact in structure and convenient to use, the opening retainer and the laryngoscope tube structure are combined for use, the supporting block connected with the tail end of the tube body is adjusted to achieve rapid opening of the airway of a patient with difficulty in airway opening such as obesity, short and thick neck and limited mouth opening, and the lifting degree of the supporting block can be flexibly adjusted according to examination requirements. Therefore, the glottis opening degree is adjusted, the application range is larger, and the glottis opening degree adjusting device can adapt to more people.