35 results about "Oral cavity structure" patented technology

The invention discloses a dental restoration customization system combining 3D printing with digital modeling, and particularly relates to the technical field of digital modeling, the dental restoration customization system comprises an oral cavity scanning module, a data fusion module, an occlusion mechanical analysis module, a restoration optimization module, a 3D printing module and a feedback monitoring module, the digital model is generated and transmitted to the data fusion module, the data fusion module integrates oral cavity scanning, medical records and dental data to form a personalized oral cavity digital model, and the occlusion mechanical analysis module collects occlusion data, analyzes stress distribution and feeds back the stress distribution to the prosthesis optimization module. The dental restoration optimization module adjusts the design of the restoration according to the oral cavity structure and the occlusion relationship of the patient, the 3D printing module performs high-precision printing according to the optimization design to generate a personalized dental restoration, and the feedback monitoring module monitors the comfort of the restoration through a pressure sensor and feeds back a result to the restoration optimization module for real-time adjustment. And the optimal performance and comfort of the prosthesis are ensured.

The invention provides an oral cavity structure information recognition optimization method combined with 3D modeling, and relates to the technical field of image recognition, and the method comprises the steps: scanning a target oral cavity to obtain target image information, and converting the target image information into triangular mesh information; introducing a predetermined modeling mechanism to perform modeling analysis on the triangular mesh information to obtain a three-dimensional model; performing gridding processing on the three-dimensional model to obtain a grid set, and extracting a first grid in the grid set; performing multi-dimensional feature collection on the first grid to obtain a feature set, and activating an oral cavity structure recognition model to analyze the feature set to obtain a focus judgment result; and according to the corresponding relationship between the first grid and the focus discrimination result, establishing an identification visual graph of the target oral cavity, thereby solving the technical problem that the focus area cannot be accurately identified due to the precision limitation of the existing oral cavity structure scanning technology in obtaining the oral cavity three-dimensional data, and realizing the purpose of accurately identifying the focus area by combining high-precision 3D modeling and a deep learning algorithm. And the identification efficiency and accuracy of the focus area in the oral cavity are improved.

The utility model discloses an oral medical auxiliary instrument which is suitable for oral surgery, repair and orthodontic treatment. The instrument comprises two arc-shaped expansion plates which are symmetrical to each other, the lips of a patient can be expanded through a positioning groove and a rotating mechanism, and the operation visual field is expanded. Connecting seats are fixed to the upper expansion plate and the lower expansion plate respectively, and the distance between the expansion plates is adjusted through a rotating seat so as to adapt to oral cavity structures of different patients. The expansion length of the instrument is adjusted through the insertion structure, and the positioning toothed bar is matched with the positioning toothed hole, so that the expansion plate is accurately positioned, and looseness in the operation process is prevented. The thread structure and the limiting device provide extra stability, and it is ensured that the instrument is kept fixed during use. Auxiliary devices for fixing the saliva pump are arranged on the two sides of the instrument, and the interior of the oral cavity is kept clean and dry. According to the design, the operation process is simplified, the accuracy of operation and the comfort level of a patient are improved, and the device is suitable for various complex oral medical operations and has high clinical application value.

The invention relates to the technical field of oral medical technologies, in particular to an augmented reality periodontal treatment navigation system which comprises a data acquisition module used for acquiring preoperative CBCT (cone beam computed tomography) data, intraoperative image data and surgical instrument space pose data of an oral cavity of a patient; the data processing module is used for preprocessing the intraoperative image data; the organization identification module is used for constructing a semantic segmentation network based on a U-Net + + architecture; the safety range determining module is used for calculating a three-dimensional equidistant surface of an operation safety range; the augmented reality fusion module is used for generating a virtual-real fusion navigation image; the navigation display module is used for providing instrument path guide lines; and the intelligent feedback module is used for triggering early warning and vibration feedback. According to the method, the tissue type and the lesion boundary are accurately recognized through reconstruction of the oral cavity structure model and the U-Net + + semantic segmentation network, accurate positioning of the lesion area and scientific definition of the safety boundary are achieved, incomplete treatment or excessive treatment is effectively avoided, and the risk that healthy tissue is accidentally injured is reduced.

1. The name of the design product: mouth bite. 2. The use of the design product: in the treatment of head and neck tumors, used to fix the oral structure. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: combination state diagram.

Disclosed is a task management method for generating an intraoral model. The task management method comprises the steps of: performing a first task of acquiring scan data including a plurality of scan frames for an oral structure; performing a second task of acquiring the pose of an intraoral scanner on the basis of the plurality of scan frames; performing a third task of generating a 3D model representing the oral structure on the basis of the plurality of scan frames and the pose of the intraoral scanner; and performing a fourth task of optimizing the 3D model, wherein the third task and the fourth task may be performed in parallel or sequentially.

The application relates to the technical field of dental instruments, in particular to an intelligent bite pad integrated with an opening device and a rubber dam clamp, which comprises a rubber dam clamp, the rubber dam clamp comprises two clamping arms and an elastic arc bow, the two clamping arms are connected through the arc bow, a first bite part is arranged on one side of the clamping arms close to the arc bow, a connecting shell is fixedly arranged on the top of the first bite part, a connecting port is arranged on the side, away from the first bite part, of the connecting shell, a second bite part is movably arranged on the connecting shell, an adjusting assembly for adjusting the distance between the first bite part and the second bite part is arranged in the connecting port, and bite grooves are arranged on the sides, away from each other, of the first bite part and the second bite part. During oral treatment, the rubber dam cloth is used to separate the diseased tooth from other oral structures, the diseased tooth is isolated, the patient bites the first bite part and the second bite part, the oral cavity of the patient is supported, and the comfort of the patient is improved.

The utility model discloses a gastric lavage device for preventing cannulas from being crunched, which relates to the technical field of medical instruments and comprises a stomach tube, the surface of the stomach tube is fixedly connected with an inflatable anti-bite component, the surface of the inflatable anti-bite component is fixedly connected with an oral cavity protection pad, the surface of the inflatable anti-bite component is fixedly connected with a connecting tube, and the connecting tube is fixedly connected with the connecting tube. An adjustable fixing device assembly is fixedly connected to the surface of the connecting tube, and a stomach tube fixing assembly is fixedly connected to the surface of the adjustable fixing device assembly; through the arrangement of the inflatable anti-biting assembly, medical staff can adjust the hardness and size by controlling the inflation amount so as to adapt to the oral cavity structures and requirements of different patients, can bear high pressure, prevents the stomach tube from being bitten, adapts to the occlusal force of different patients by adjusting the inflation amount, and is convenient to use through the arrangement of the pipeline fixing assembly. And the stomach tube can be firmly fixed at a proper position, so that the stomach tube is prevented from shifting due to the action of a patient.

The invention discloses a portable magnetic snore-ceasing device, and belongs to the technical field of snore-ceasing devices, the magnetic snore-ceasing device comprises a plurality of tooth socket pieces, the tooth socket pieces are distributed in two groups of mirror images, the two groups of tooth socket pieces arranged in the mirror images are arranged to be an upper tooth socket and a lower tooth socket, the tooth socket pieces are arranged in a fan-shaped structure, and the upper tooth socket piece and the lower tooth socket piece are arranged in a staggered mode. A through hole is formed in one side of the tooth socket part, a self-adaptive tooth socket adjusting assembly is arranged in the through hole and used for being attached to teeth and oral cavity structures of users with different tooth forms, and a lower jaw triggering support assembly is installed on the side, away from the tooth socket part, of the self-adaptive tooth socket adjusting assembly and used for self-adaptively adjusting the position of the lower jaw. The self-adaptive tooth socket adjusting assembly and the lower jaw triggering support assembly are adopted, under the flexible adjustment, dynamic adaptation and multiple action mechanisms, comfort is guaranteed, the treatment effect is improved, meanwhile, the device can adapt to the oral cavity conditions of different users, the production cost is reduced, and the snore problem of different degrees can be effectively solved.

The utility model relates to a brush head and a toothbrush. The brush head comprises a brush head body, a cleaning part and a transmission part. The brush head body is constructed to extend along a first axis and comprises a side wall for limiting an open cavity, and a supporting piece is formed on the side wall; the cleaning part can pivot relative to the brush head body; the cleaning part comprises a first cleaning unit and a second cleaning unit, and the second cleaning unit is configured to be pivotable; the transmission part comprises a first transmission piece and a second transmission piece. The toothbrush comprises a handheld part and a brush head, the brush head is configured to be mounted on the handheld part, and a cleaning part of the brush head is configured to vibrate relative to the handheld part. The brush head and the toothbrush provided by the utility model can adapt to oral cavity structures of different users through the pivotable characteristic of the cleaning part, and can effectively clean complex areas adjacent to teeth and gingiva, especially gingival sulcus and other places which are difficult to touch, so that the brush head can be better attached to the surfaces of the teeth and gingival lines; therefore, more comprehensive and thorough cleaning is realized.

The utility model discloses a novel universal opening angle spreader which comprises a guide rail and an adjusting part which are in sliding fit with each other, a first spreading frame is arranged at the end, away from the adjusting part, of the guide rail, a second spreading frame is arranged on the adjusting part, the lower end of the first spreading frame is connected with a first drag hook piece, and the lower end of the second spreading frame is connected with a second drag hook piece. The first distraction frame and the first drag hook piece are movably connected through a universal connecting assembly, the second distraction frame and the second drag hook piece are movably connected through a universal connecting assembly, so that the first drag hook piece and the second drag hook piece are driven by the universal connecting assemblies to achieve multi-angle adjustment, and at least one end of the guide rail is provided with a handle. An adjustable fixing mechanism is introduced, the guide rail and the adjusting part are matched for distance adjustment, the universal connecting assembly drives the drag hook piece to conduct multi-angle adjustment, a doctor can adjust the position and tension of the drag hook according to the oral cavity structure of a patient and the operation requirement, in addition, the illumination function is further integrated, a better operation view is provided for the doctor, and the operation efficiency is improved. And the use experience of the user can be better improved.

This utility model discloses an oral expander, relating to the field of oral expander technology. The technical solution includes a handle assembly with a limiting component inside. Two limiting components are located on the outside of the handle assembly, with a spring between them. The handle assembly includes a handle with a through groove inside, and a limiting groove inside the through groove. The limiting component includes a sliding plate with a spring telescopic rod on one side and a rack fixed on the other side. The beneficial effect of this oral expander is that the limiting component, composed of the sliding plate, spring telescopic rod, rack, and gear, can quickly release and lock the limiting state of the expander support assembly. Medical personnel only need to simply move the sliding plate to flexibly adjust the distance between the two oral expanders in conjunction with the elasticity of the spring, accurately adapting to the needs of patients with different oral structures, age groups, and conditions, significantly improving the versatility and practicality of the expander.

The invention discloses an oral cavity residual tooth crown reduction digital guide plate and a preparation method, and belongs to the technical field of oral medicine. The guide plate comprises a base plate used for covering and being embedded in a dental arch, a connecting piece is installed on the base plate, and a reset retention piece used for retention during reset of residual teeth is arranged on the connecting piece. When the guide plate is prepared, firstly, data information is collected, and dentition information, image information and face information of a patient are collected; modeling: performing virtual reconstruction on the oral cavity structure of the patient; and manufacturing a guide plate again, designing a digital guide plate according to the acquired data information and the virtual oral cavity structure, and manufacturing the digital guide plate. According to the invention, the residual tooth crown can be accurately guided to reset, and the reset angle, direction and depth of the residual tooth are ensured to be accurate; by utilizing personalized three-dimensional data of a patient, the guide plate can provide clear positioning and an accurate reduction path for residual dental crown directional reduction, and the technical problem that the residual dental crown directional reduction is high in requirement on an operator due to the fact that traditional residual dental crown directional reduction depends on experience of the operator is solved.

The utility model relates to an animal oral cavity examination spreader, including rectangular frame, the outer surface of both ends of rectangular frame is slidably installed first sliding block, the middle end of rectangular frame is provided with two groups of guide rod, the outer surface of two groups of guide rod is slidably installed second sliding block, one side fixed mounting of first sliding block has the connecting block, and the connecting block is rotationally arranged with screw rod on second sliding block, the outer surface of screw rod is equipped with movable plate, and one end of movable plate is provided with two groups of limit plate, and the link plate is rotationally arranged between two groups of limit plate, and the utility model discloses through sliding first sliding block and second sliding block, can fine adjustment movable plate's position, makes the spreader to be able to closely adhere and adapt to the oral cavity structure of different size and shape of animal.

This invention relates to the field of intelligent diagnostic technology for oral medical imaging, specifically an intelligent auxiliary diagnostic system for oral diseases integrating multimodal imaging. The system includes: a data receiving module that receives intraoral optical photographs, cone-beam CT, and oral and maxillofacial MRI; an image analysis module that automatically delineates and segments the optical photographs to generate two-dimensional structural maps with tooth position markers, reconstructs a three-dimensional jawbone from CBCT and extracts root canal structures to generate a model containing bone density and root canal parameters, and enhances soft tissue from MRI and identifies inflammatory areas to generate a model showing muscles, blood vessels, nerves, and inflammatory boundaries; a multimodal fusion module that uses spatial registration and feature fusion to construct a unified digital model; and an intelligent diagnostic module that calls a pre-trained model for analysis and reasoning to generate a disease list and quantitative parameters. Through differentiated image processing and multimodal fusion, the system achieves a panoramic presentation of oral structure and lesions, enhancing the comprehensiveness of disease identification. This invention can improve the accuracy and efficiency of intelligent auxiliary diagnosis of oral diseases.

The utility model relates to a kind of for oral cavity cancer postoperative saliva's collection device, including liquid collection component, negative pressure ball, liquid collection bag and drainage component, liquid collection component is adapted to the oral cavity of user, it includes first flexible mouthguard and second flexible mouthguard arranged in upper and lower and the liquid suction part being set between them, liquid suction part side is provided with liquid outlet, the top of negative pressure ball is provided with liquid inlet and vent with liquid outlet intercommunication, its bottom is provided with drain, drainage component is set between negative pressure ball and liquid collection bag, it includes first cylinder and elastic part, can be under the gravity of saliva Automatic switch. The device can efficiently collect saliva, realize automatic drainage, pressure stability, adapt to postoperative oral cavity structure, improve patient convenience and security, reduce medical care burden.

The manufacturing method of a transparent orthodontic device using a 3D printer according to the present invention is a manufacturing method of a transparent orthodontic device performed using a computer, and includes: (A) a step of scanning a patient's oral structure to generate and store data regarding the shape thereof; (B) a step of displaying the patient's oral structure based on the stored data; and (C) a step of setting correction details for the displayed oral structure. In step (C), the teeth to be corrected are selected, correction values regarding the amount of rotation and the amount of movement thereof are input, the scale of the orthodontic device is set, and further, a step of partially differentiating and inputting the thickness of the transparent orthodontic device is included.

The present invention relates to a dental prosthesis or teeth-straightening device continuous production process using a 3D printer, and to a dental prosthesis or a teeth-straightening device manufactured using the continuous production process. The present invention is for manufacturing a patient-customized dental prosthesis or teeth-straightening device by using 3D data on the oral structure of a patient, wherein a teeth-straightening device is manufactured using 3D printing, supporter separation, washing, post-curing, and heat treatment processes are performed in a continuous process, and the steps proceed by means of a robot without manual handling by a person during proceeding of the steps, thereby improving production efficiency and enabling defective products to be sorted out without additional equipment.

The utility model relates to the technical field of medical teaching appliances, in particular to a stomatology teaching appliance. Comprising a base, a moving mechanism is arranged on the base and used for driving the teaching aid to move, a fixing rod is fixed to the top of the base, an electric push rod is fixed to the bottom of the inner side of the fixing rod, a connecting rod is fixed to the telescopic end of the electric push rod, and a containing plate is fixed to the top of the connecting rod. According to the oral medicine teaching appliance provided by the utility model, due to the design of the clamping mechanism, tooth models of different types can be replaced at any time according to teaching requirements, so that more complicated oral cavity structures or pathological changes can be displayed, and students can be helped to better understand and learn; due to the design of the moving mechanism, the tooth model can be easily moved to the middle of the students, so that the students have the opportunity to observe, touch and discuss the tooth model in a close range, and the interactivity is beneficial to arousing the learning interest and enthusiasm of the students and improving the participation degree of the students.

A dentine-enamel boundary detection system for an oral inspection device is provided. The dentine-enamel boundary detection system includes a light emission module configured to emit light to irradiate an oral region of interest and two optical filters having different respective passbands. Each of the two optical filters are arranged to filter a portion of fluorescence emitted from oral structures in the oral region of interest to pass filtered fluorescence. The system further includes a sensor module and a processor module. The sensor module is configured to detect the filtered fluorescence and output corresponding sensor data. The processor module configured to identify the presence of a dentine-enamel boundary in the oral region of interest by processing the sensor data output by the sensor module.

The utility model provides a lip and tooth protection device which comprises a tooth socket and a lip socket connected to one side of the tooth socket in an overturning mode. The tooth socket and the lip sleeve are of an integrally-formed soft structure. Wherein the tooth socket is internally provided with a V-shaped groove matched with an incisor, the lip socket is provided with a 7-shaped groove matched with a lip part, and a tooth lip-gum outer edge matched with a gingival root and a lip-gum sulcus is formed at the top of a joint of the lip socket and the tooth socket. According to the lip and tooth protection device, the V-shaped groove of the tooth socket and the 7-shaped groove of the lip socket are designed, so that the device can be better matched with the oral cavity structure of a patient, and customized protection is provided for upper incisor teeth and upper lips in the operation process. In addition, due to the integrally-formed soft structure design of the device, the comfort level of the patient is improved, postoperative recovery is facilitated, and extra damage and treatment cost caused by misuse of instruments are reduced.

A method is provided for measuring and categorizing gingival recession. In some cases, the method can include receiving intraoral scan data of a dentition of a patient. The method can include segmenting the intraoral scan data into a plurality of oral structures that comprise at least a tooth in the dentition of the patient, a gingiva, and a representation of an intersection between a first portion of the tooth and a second portion of the tooth. The method can include determining a gingival recession measurement indicative of a distance between the gingiva and the intersection. The method can include providing, to the user device, the gingival recession measurement.

The invention belongs to the technical field of mandibular movement track acquisition, and discloses an inertial sensor-based mandibular movement track acquisition mechanism, which comprises a sensor module and a wearable bracket, and is characterized in that the sensor module adopts two inertial sensors, and calculates relative movement data between the two inertial sensors according to real-time data; the wearable stent comprises an intraoral stent and an extraoral stent, the intraoral stent is made of a dental impression material, is rigidly connected with a mandibular dentition through impression plaster and adapts to an individual oral cavity structure, and the extraoral stent is of a 3D printing structure and is used for fixing an inertial sensor and realizing light weight through topological optimization. The IMU inertial sensor is introduced into the acquisition platform, so that compared with a stereoscopic vision measurement technology, the precision is higher, and the cost is lower; the lower jaw is connected with the measuring bracket by using an impression material, so that the structure is simpler, and the use is more convenient; the method comprises a corresponding trajectory resolving algorithm, so that a user can obtain a real mandibular trajectory of a patient at a lower cost for subsequent diagnosis.

The invention provides a tooth self-adaptive cleaning method and system based on oral cavity multi-dimensional features and electronic equipment. The tooth self-adaptive cleaning method comprises the steps that S1, an oral cavity standardized image data set of a target individual is acquired; s2, extracting and quantifying oral cavity multi-dimensional features including dental arch macroscopic morphological features, tooth and tooth slit microcosmic arrangement features, gingival tissue health status features and special oral cavity structural features; s3, calculating and generating a tooth self-adaptive cleaning scheme containing the physical configuration parameters of the brush head and the working parameters of the cleaning program; s4, converting the tooth self-adaptive cleaning scheme into a hardware control instruction of a tooth self-adaptive cleaning device, and driving toothbrush hardware to execute tooth cleaning operation of the target individual; and S5, after tooth cleaning operation is completed, obtaining a cleaned oral cavity image of the target individual, and evaluating a cleaning effect. According to the invention, the tooth cleaning scheme can be accurately matched with the unique physical structure and physiological state of the oral cavity of the user, and a tooth self-adaptive cleaning scheme adaptive to the target user is formed.

The invention discloses an oral clinical repair tongue blocking device which comprises a fixing assembly, an adjusting assembly and a tongue blocking piece, the fixing assembly is used for being attached to the face and the lip to fix the tongue blocking device, and the adjusting assembly is installed between the fixing assembly and the tongue blocking piece and used for adjusting the angle of the fixing assembly and the depth of the tongue blocking piece. According to the clinical oral cavity repair tongue blocking device, through innovative design, the adaptability to the oral cavity structure of a patient and the wearing comfort degree are remarkably improved, meanwhile, the adjusting flexibility is enhanced, and medical staff can accurately control the tongue blocking position and depth. According to the tongue blocking device, the operation process is simplified, the treatment efficiency and accuracy are improved, tongue interference is effectively blocked, a repairing area is protected, the treatment experience and satisfaction degree of a patient are improved, and therefore the success rate and the treatment effect of an oral cavity repairing operation are further promoted.

The utility model relates to the technical field of oral cavity medical instruments, in particular to a disposable oral cavity impression which comprises a lower tooth base layer impression frame, the front portion and the rear portion of the outer surface of the lower tooth base layer impression frame are respectively provided with five through installation fixing clamping holes, and the inner lower wall of the lower tooth base layer impression frame is fixedly connected with a flexible tongue system silica gel block. An impression mounting groove is formed between the inner lower wall of the lower tooth base layer impression frame and the flexible tongue system silica gel block, a plurality of penetrating permeation holes are formed in the inner lower wall of the impression mounting groove, a lower tooth buffer layer structure is movably clamped in the impression mounting groove, and a connecting block is fixedly connected to the right part of the outer surface of the lower tooth base layer impression frame. According to the disposable oral cavity impression, due to the reasonable structural design, the lower tooth buffer layer, the flexible silica gel block and the like, the disposable oral cavity impression is convenient to install and use, can be attached to the oral cavity structure, enables impression materials to be evenly distributed and is convenient and fast to operate, and therefore the impression manufacturing quality and efficiency are greatly improved.

Described herein are systems and methods for providing personalized oral care. A system for oral care comprises an oral insert. The oral insert is sized and shaped according to a user's oral cavity, and has a plurality of fluid nozzles and an effluence conduit to channel fluid out of the user's oral cavity. Pressurized fluid provided through the nozzles are directed to, for example, the interproximal spaces between the user's teeth. In some variations, a system comprises an oral insert and an elastomeric substrate that is attached to the oral insert. In some variations, the elastomeric substrate comprises a textured surface vibrates and / or mechanically agitates and / or translates along the surface of the user's teeth. In some variations, a system for oral care comprises a microbiome collection chamber. Some variations comprise dental shim devices that are used for acquiring oral structure data and alignment between the upper and lower arches.

A method is provided for measuring and categorizing gingival recession. In some cases, the method can include receiving intraoral scan data of a dentition of a patient. The method can include segmenting the intraoral scan data into a plurality of oral structures that comprise at least a tooth in the dentition of the patient, a gingiva, and a representation of an intersection between a first portion of the tooth and a second portion of the tooth. The method can include determining a gingival recession measurement indicative of a distance between the gingiva and the intersection. The method can include providing, to the user device, the gingival recession measurement.

The invention provides an oral cavity image data processing method and system, electronic equipment and a medium, and relates to the technical field of image data processing, and the method comprises the steps: obtaining a multi-source oral cavity image sample set; carrying out regional division on the oral cavity structure; carrying out modeling feature collection on any image source in the multi-source oral cavity image sample set; identifying modeling features of the plurality of oral regions; performing modeling effect evaluation according to the multiple groups of image source modeling feature sets and the multiple groups of area modeling feature sets; and according to the mapping relationship between the plurality of oral cavity regions and the plurality of groups of image source tags, receiving a multi-source oral cavity image data set corresponding to the to-be-modeled oral cavity region, processing the received multi-source oral cavity image data set, and outputting a modeling model. The technical problem that image data cannot be flexibly selected and a modeling method cannot be adjusted according to the characteristics of different areas in the prior art can be solved, the technical aims of automatically selecting proper image data and adjusting the modeling method according to the characteristics of different oral areas are achieved, and the technical effect of improving modeling precision and practicability is achieved.

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.