118 results about "Digestive endoscope" patented technology

The invention relates to the technical field of medical image processing, in particular to a digestive endoscopy image deblurring enhancement method and system.The method comprises the steps that firstly, an input digestive endoscopy original image is processed through a blurred region classification network, and a pixel-level blurred classification map capable of distinguishing an adhesion blurred region and a motion blurred region is generated; then, parallel processing is carried out according to the classification graph: for an adhesion fuzzy region, physical model restoration and color correction are carried out by estimating a transmissivity graph and an ambient light value; for a motion blur region, a self-adaptive non-blind deconvolution kernel is constructed to perform deconvolution sharpness. And finally, inputting the two processing results and the original clear area into a multi-scale feature fusion network together, carrying out adaptive feature weighted fusion and image reconstruction, and outputting a globally clear and detail-enhanced final image. According to the method, accurate identification and targeted enhancement of composite blurring are realized, and the visual quality and diagnosis availability of the digestive endoscopy image are effectively improved.

The invention belongs to the technical field of medical instruments, and discloses a digestive endoscopy diseased region accurate positioning and marking device which comprises a controller, an endoscope hose is fixedly connected to the bottom of the controller, and an instrument insertion opening is formed in the right side of the controller. Through the arrangement of the sleeve, the dye tube, the pressurization air bag and the baffle, after an operator observes a diseased region through the endoscope hose, the operator only needs to align the endoscope hose to the diseased region, and by pressing the pressurization air bag, air in the pressurization air bag enters the dye tube through the inner hose; the baffle can be pushed to rotate outwards under the action of air pressure, meanwhile, methylene blue in the dye tube is sprayed out under the action of air flow, a diseased region is marked, the methylene blue can be absorbed by normal mucous membrane cells, and diseased tissue shows dyeing difference due to abnormal cell function and poor absorption capacity, so that the diseased region is marked. Therefore, the effect of accurate positioning is achieved.

The utility model relates to medical supplies technical field especially, a kind of injection mould for batch production of digestive endoscope mouth pad, the utility model mainly is constituted by annular support, fixed mould, radial displacement drive assembly and movable mould, radial displacement drive assembly is used to drive movable mould to carry out radial displacement towards or away from corresponding fixed mould, the bottom plate of annular support is opened in circumferential direction with multiple blanking ports, blanking port is located below corresponding fixed mould, first core block for forming endoscope through hole is equipped in fixed mould, first core block can be displaced to first storage groove under the driving of first micro push rod when demolding, second core block for forming lightening hole is equipped in movable mould, second core block can be displaced to second storage groove under the driving of second micro push rod when demolding, by this mode, the digestive endoscope mouth pad formed can be automatically demoulded and dropped under the action of its gravity, and fall into the collection area below through blanking port.

1. The name of the design product: ultrasonic digestive endoscope. 2. The use of the design product: for gastrointestinal digestive examination diagnosis and treatment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to the field of storage and transportation of digestive endoscopes, in particular to a storage and transportation box for the digestive endoscopes, which is provided with a groove body for storing an operation part and two groove bodies for storing an insertion part and a light transmitting bundle, and can play a role in stretching the digestive endoscopes into the groove for pressing and fixing at the same time. Comprising a box body, a foam block is arranged in the box body, a first groove body matched with an operation part is embedded in the right rear portion of the upper surface of the foam block, and a second groove body communicates with the front side of the first groove body; the left side of the first groove body is communicated with a third groove body, the left end of the third groove body is bent forwards to form a fourth groove body, and the front end of the fourth groove body is provided with a fifth groove body matched with the light guide connector. The left side of the box body is connected with an upper cover through a hinge, and a first magnetic block and a second magnetic block are embedded in the right side edge of the upper cover. A limiting structure extending into the first groove body to the fifth groove body is fixedly arranged on the inner surface of the upper cover. The device is easy to operate, convenient to use and suitable for various physical examination medical institutions.

The invention discloses a portable auxiliary supporting device for a digestive endoscope. The portable auxiliary supporting device comprises a folding base, an adjusting supporting arm, an operation part clamping device, a first rotating joint, a second rotating joint and a third rotating joint, the foldable base comprises at least two bottom plates, the bottom plates are connected through a hinge mechanism to form a foldable structure, and each bottom plate is provided with a fixing clamp; the adjusting supporting arm comprises a fixed arm and a telescopic movable arm, one end of the fixed arm is connected with the folding base, the other end of the fixed arm is connected with the telescopic movable arm, and a sliding rail mechanism and a torque locking mechanism are arranged on the telescopic movable arm; and the telescopic movable arm is connected with the operation part clamping device. The portable auxiliary supporting device for the digestive endoscope can be folded and stored, is small in size, easy to operate, good in portability and capable of meeting application requirements of multiple places; when the operating part is clamped, the hand of a worker can be supported, so that the hand fatigue of the worker is reduced, and the working efficiency and the inspection speed are improved.

The invention belongs to the field of digestive endoscopy supports, and particularly relates to an angle-adjustable digestive endoscopy support which comprises an adjusting frame capable of being adjusted in a three-dimensional mode, and a conveying mechanism is connected to the adjusting frame. The conveying mechanism comprises a shell, a conveying device for conveying the digestive endoscopes is arranged on the shell, and a lubricating device for lubricating the digestive endoscopes is further arranged in the shell; the lubricating device comprises a rotating cylinder rotationally connected with the shell, and a flow guide plate for guiding the flow of the lubricating liquid is arranged in the rotating cylinder; a pair of rotating rollers arranged on the two sides of the upper portion of the axis of the shell are slidably connected to the shell in the radial direction, and the pair of rotating rollers rotate along with rotation of the rotating cylinder. The invention provides an angle-adjustable digestive endoscopy support capable of supporting, conveying and lubricating a digestive endoscopy.

The application discloses a digestive endoscope disinfection process whole-cycle monitoring and compliance verification platform and method, comprising a data acquisition and preprocessing module, which is used for acquiring real-time state data and environmental data and preprocessing to generate a standardized data set; a path optimization and decision module, which is used for simulating multiple operation paths of the disinfection process by using a Monte Carlo tree search algorithm and selecting an optimal disinfection path; a compliance reasoning and verification module, which is used for reasoning symbolic rules in the disinfection process; a blockchain storage module, which is used for writing data blocks into a blockchain ledger to form a disinfection data chain; an intelligent contract processing module, which is used for real-time judgment, automatic triggering of alarms and recording of non-compliant operations; a feedback and query module, which is used for querying, retrieving and auditing disinfection process whole-process information, alarm records and compliance events. The application realizes intelligent optimization of the disinfection process, real-time compliance verification and on-chain storage, and comprehensively improves the safety supervision efficiency.

The application discloses a three-dimensional reconstruction method, device, equipment and medium for a digestive endoscope scene, relates to the technical field of 3D modeling, and comprises the following steps: mapping a semantic embedding vector of a historical digestive endoscope image into LoRA modulation coefficients; constructing a current prediction model for depth pose prediction and comprising a backbone network and a hybrid expert multi-task head; the backbone network is a Depth Anything 3 network with a LoRA branch; adjusting the weight of the LoRA branch in the current prediction model based on the modulation coefficients, and extracting target image features fused with semantic information; generating a depth pose prediction result by using the multi-task head to determine a total loss value; updating the parameters of the low-rank incremental matrix of the LoRA branch to obtain a new current prediction model, performing the next round of iteration, and obtaining a target prediction model; and predicting the depth pose information by using the target prediction model and performing three-dimensional reconstruction. The accuracy and robustness of three-dimensional reconstruction in the digestive endoscope scene are improved.

1. Name of the product in this design: Sterilization box (digestive endoscope). 2. Purpose of this design: Sterilization box for digestive endoscopes. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses auxiliary traction forceps for a digestive endoscope, and relates to the technical field of auxiliary traction forceps, the auxiliary traction forceps comprise a forceps body and a forceps handle, and one end of the forceps body is provided with a connecting pipe, a clamping mechanism and a mounting mechanism. Through the arrangement of the clamping mechanism and the mounting mechanism, a connecting pipe is inserted into a connecting groove, after completion, a sliding plate is pushed to slide in a sliding groove, the sliding plate moves to drive a pushing plate to move, the pushing plate moves to drive a sliding rod to move, the sliding rod slides in an inclined groove, a fixing block is pushed to move, and the fixing block is inserted into a fixing groove in a displacement mode; according to the auxiliary traction forceps, the connecting pipe is fixed in the connecting groove, so that installation of the connecting pipe is completed, rapid installation and detachment of the connecting pipe are facilitated, the forceps body and the forceps handle can be repeatedly used through the detachable connecting pipe, only the connecting pipe and the front end position need to be replaced, and the replacement cost of the auxiliary traction forceps is reduced.

The invention discloses a magnetic anastomosis device for tissue clipping under a digestive endoscope, and belongs to the technical field of medical instruments. The device comprises a digestive endoscope, tissue grasping forceps, a mounting head, a pressing rod, a first magnet and a second magnet. The installation head is installed at the head end of the digestive endoscope, a sliding groove and magnet installation grooves in the two sides are formed in the installation head, and the first magnet and the second magnet are arranged in the magnet installation grooves respectively. The pressing rod is arranged on the tissue grasping forceps in a sleeving mode and located in the sliding groove. A magnet control structure is arranged in an inner cavity of the mounting head and comprises a baffle, a connecting stand column, a connecting rod, a pressing column and a spring. The baffle is a movable groove wall on one side of the magnet mounting groove and is connected with the connecting rod through the connecting stand column, and when the pressing rod retreats along with the tissue grasping forceps and extrudes the pressing column, the baffle is driven to move downwards, limiting on the magnets is relieved, and the two magnets attract and clamp the tissue under the action of magnetic force. According to the invention, the motion trail of the magnet can be accurately guided, the butt joint overlapping area of the magnet is large, the clamping effect is reliable, and the operation controllability is strong.

1. Name of the product in this design: Digestive endoscope hemostatic clip. 2. Purpose of this design: For use as a hemostatic clip in medical surgery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model belongs to the technical field of medical instruments, and particularly relates to a digestive endoscope anti-reflux water supply pipe with a light supplementing function, which comprises a hose, a one-way valve is mounted at one end of the hose, a spray head is mounted at one end of the one-way valve, a water guide cavity is arranged in the spray head, arc-shaped water outlet holes are symmetrically formed in one end of the inner wall of the water guide cavity, and a water outlet is formed in the other end of the inner wall of the water guide cavity. A storage cavity is formed in the middle of one end of the spray head, an illuminating lamp is clamped and mounted in the storage cavity, and a power supply wire is mounted on one side of the outer wall of the illuminating lamp. The anti-reflux water supply pipe for the digestive endoscope is composed of the hose, the one-way valve and the spray head, the phenomenon of reflux can be avoided by using the one-way valve, and light can be supplemented to a detection area by using the illuminating lamp installed in the spray head, so that the endoscope can conveniently detect the area.

The utility model relates to the technical field of medical nursing appliances, and discloses a digestive endoscopy nursing bed which comprises a movable supporting seat, a bed plate part and a side protection plate part, a folding plate is connected to one end of a fixed plate body in a downward turning mode, a backrest plate is connected to the fixed plate body in an upward turning mode, and during normal use, the folding plate is not turned downwards, so that the folding plate is not turned upwards. The bed plate part is in a flat plate state, a patient can lie flat conveniently, when the patient needs to be nursed in a sitting posture, the folding plate is turned downwards, the backrest plate on the fixed plate body is turned upwards, the bed plate part is in an arm-chair posture, the patient can be conveniently supported in the sitting posture, the structure is simple, and nursing use is more convenient.

The utility model discloses a digestive endoscopy biopsy duct soft plug which comprises a tubular soft plug body, a center channel is arranged in the soft plug body, the upper end of the soft plug body extends outwards in the radial direction to form a turnup edge, a valve block used for opening or closing the center channel is arranged in the center channel of the soft plug body, and the valve block is arranged in the center channel of the soft plug body. The valve plate is composed of at least three thin sheets which are evenly distributed in the circumferential direction, the thin sheets are fixed to the soft plug body, any two adjacent thin sheets are oppositely combined to form an attaching seam, and the thin sheets are bent inwards in the axial direction so that the valve plate formed by all the thin sheets can be of an inwards-concave arc-shaped structure. The utility model provides a soft plug for a biopsy pore channel of a digestive endoscope, which does not need to be taken down when related instruments of the digestive endoscope need to penetrate into the biopsy pore channel, so that the actions of taking down and assembling the soft plug are reduced, the biopsy pore channel is more convenient to use, and meanwhile, the sealing performance of the biopsy pore channel can be kept when the biopsy pore channel is not used.

The utility model relates to the technical field of endoscope traction, and discloses an auxiliary traction assembly for a digestive endoscope, which comprises a fixed cylinder, a catheter fixedly mounted at the front end of the fixed cylinder, a mounting bin mounted at the lower part of the catheter, a fixed rod fixedly mounted on the inner wall of the mounting bin, and a second spring wound on the outer side of the fixed rod, a sliding block is slidably installed on the outer side of the fixing rod, a pulling plate is fixedly installed on the lower portion of the sliding block, a liquid suction pipe is installed on the surface of the pulling plate, a connecting valve port is installed at the rear end of the liquid suction pipe, and a suction port is installed at the front end of the liquid suction pipe. The position of the liquid suction opening can be conveniently adjusted, pus can be accurately sucked, the practicability and functionality of the traction device can be improved, and the traction device can be conveniently used by medical staff.

The application relates to the technical field of medical devices, in particular to a portable dustproof shockproof waterproof digestive endoscope system, which comprises a combined box body, the combined box body comprises an outer box body, an upper layer box cover, a main machine system, a digestive endoscope instrument and a consumable storage module, the three are installed in the inner part of the upper layer box cover, the main machine system is arranged in the inner part of the outer box body, an electronic leveling module and a mechanical leveling module are arranged in the inner part of the outer box body, the electronic leveling module and the mechanical leveling module are matched to form an automatic leveling module, the main machine system comprises a main machine body, a power supply, an image workstation, a display screen, a wireless transmission module, a water bottle body, an automatic leveling processor, an integrated fan and a cooling fin, the application has the advantages of simple structure, small volume, convenience in carrying, dustproofness, shockproofness, automatic leveling and suitability for the portable dustproof shockproof waterproof digestive endoscope system in various harsh environments.

The utility model provides a digestive endoscope nursing bed with limiting structure relates to medical instrument technical field, including examination bed, the top of examination bed is installed with auxiliary mechanism, the bottom of examination bed is installed with first adjusting assembly near the back, the auxiliary mechanism includes the backrest, the back of backrest is fixedly connected with the storage box near the bottom, the inside installation of storage box has the winding assembly, the right side of storage box is installed with fixed component near the top, the back of backrest is installed with second adjusting assembly, through first adjusting assembly and second adjusting assembly, can position adjustment to auxiliary mechanism according to the abdominal position when the patient is on one side, through winding assembly, it is convenient to the patient of different waistline and is bound to the abdomen, and the sigmoid colon and transverse colon are assisted and pressed, and cooperate with the medical staff's targeted local pressing, greatly improved the operation convenience, effectively reduced the loss of medical staff's energy.

This invention relates to the field of digestive endoscopy technology, and discloses an adaptive path planning control system and method for digestive endoscopy probes. The system includes an endoscopy probe and a handle. The handle contains an environment sensing unit, a pose estimation unit, a path planning unit, a motion control unit, and an actuator. The environment sensing unit extracts the cavity center, the probe-mucosa distance, and anatomical landmarks. The pose estimation unit calculates the probe's three-dimensional pose in real time. The path planning unit generates an adaptive motion trajectory based on the state vector. The motion control unit converts these into pulse commands to drive the actuator, which in turn drives the probe to bend or push via a wire traction mechanism. This invention achieves adaptive obstacle avoidance path planning and safety control of the endoscopy probe, reduces operational difficulty, shortens the learning cycle, effectively avoids mucosal damage, and improves the safety and efficiency of digestive endoscopy.

The utility model discloses an incision knife provided with an air bag support and capable of facilitating focus stripping under a digestive endoscope. The incision knife comprises an outer sheath tube and a cutting wire arranged in the outer sheath tube in a sliding mode. The device further comprises multiple sets of supporting assemblies, the multiple sets of supporting assemblies are distributed in the outer sheath tube in an annular array mode according to the center axis of the outer sheath tube, each supporting assembly comprises an air tube fixed to the side wall of the outer sheath tube, a supporting plate is arranged at the outer end of each air tube, and the supporting plates and the air tubes are connected in a sealed mode through corrugated tubes; the outer sheath tube is further provided with an inflation assembly used for inflating the interior of the air tube. According to the incision knife provided with the air bag support and facilitating focus stripping under the digestive endoscopy, in the process that the incision knife is used for carrying out a focus stripping operation under the digestive endoscopy, the supporting plate abuts against tissue at the corresponding position through the supporting assembly, the supporting effect in the air bag state is achieved, and by means of the supporting effect on peripheral tissue, the focus stripping operation under the digestive endoscopy is facilitated. And the nidus stripping operation under the digestive endoscopy can be conveniently carried out by keeping a certain visual field.

The invention provides a digestive endoscopy decontamination quality evaluation method based on image recognition, and the method comprises the steps: constructing a shared and differentiated feature extraction double-flow convolutional neural network through the double-flow input of original and simulated degraded images, and fusing multi-scale features; a LINGAM causal discovery and gradient mask mechanism is introduced, a causal relationship between an image quality factor and residual judgment is dynamically modeled, and implicit causal graph optimization is realized; a causal intervention feature reweighting and anti-fact attribution mechanism is adopted to correct the feature weight of the low-quality region and improve the robustness of the model; according to the method, multi-task joint loss and progressive causal freezing training are carried out, so that the model has precision and interpretability, an image quality factor, residual judgment and a causal difference graph are finally output, dynamic and multi-dimensional quality closed-loop management and auxiliary decision making in a clinical scene are realized, and the analysis reliability of an endoscopic image in a complex environment is effectively improved.

The invention belongs to the technical field of medical simulation. According to the digestive endoscope virtual simulation training system and the digestive endoscope operation evaluation method, a background control terminal carries a visual interaction platform and a user assessment system, an attitude sensor is arranged in a box body, a handle is used for simulating key operation of an endoscope, and the visual interaction platform is connected with the user assessment system. A virtual digestive tract modeling scene is configured in the visual interaction platform; the handle and the attitude sensor are both in communication connection with the control terminal; the control terminal is in communication connection with the background control terminal; the visual interaction platform restores the operation behavior track of the endoscope in the virtual digestive tract modeling scene according to the received posture data of the endoscope and in combination with the virtual digestive tract modeling scene; an endoscope video is collected through a camera on a handle, and a user assessment system performs operation evaluation on the digestive endoscope according to an operation behavior track, the endoscope video and a diagnosis report of a user; and the accurate restoration of the endoscope operation process is realized.

The utility model provides a digestive endoscope angle adjusting and locking structure, which belongs to the technical field of digestive endoscopes and is provided with a mounting seat and an adjusting mechanism. The mounting seat is of a square structure and is used for placing an adjusting rod of the digestive endoscope; the adjusting mechanism is arranged on the front side of the mounting seat and is used for fixing an adjusting rod of the digestive endoscope to prevent displacement; the mounting seat comprises a first fixing hole, a positioning plate, a bulge, a screw rod and a nut; the positioning plate is of a square structure; the bulge is of a cylindrical structure; the two bulges are respectively arranged at the left upper part and the right lower part of the positioning plate; the problems that in the using process of a digestive endoscope, an adjusting rod is difficult to be stably fixed at a specific angle, a doctor is difficult to maintain a clear and accurate view field, a diseased region may be missed or the angle needs to be frequently readjusted in the operation process, the operation time is prolonged, and discomfort of a patient is caused can be solved.

The invention relates to the technical field of auxiliary traction forceps for digestive endoscopes, and particularly discloses auxiliary traction forceps for digestive endoscopes, which comprise an outer rod tube, an adjusting part is arranged in the outer rod tube, and a clamping part is arranged above the outer rod tube; the adjusting part comprises a first gear, the first gear is arranged in the outer rod pipe, an adjusting cap is arranged at one end of the first gear, first adjusting racks are arranged on the two sides of the first gear in a meshed mode, a connecting rod is arranged above the first adjusting racks and slides in the outer rod pipe, and a second adjusting rack is arranged above the connecting rod and slides in the outer rod pipe. The second adjusting rack is meshed with a second gear, one end of the second gear is rotationally connected with the outer rod tube, and the other end of the second gear is fixedly connected with the clamping part, so that stable adjustment of the clamping part of the traction forceps at any angle of 0-90 degrees can be achieved, lesion tissue can be conveniently and flexibly clamped and taken out, and the traction forceps are effectively adaptive to the complex environment of digestive tract surgery.

The invention relates to the technical field of tip caps, in particular to a tip cap of a digestive endoscopy, which comprises an endoscope lens, an auxiliary tube is fixedly arranged on one side of the endoscope lens, the height of the auxiliary tube is lower than that of the endoscope lens, an inner sleeve is mounted on the outer surface of the endoscope lens in an inserting manner, and the inner sleeve is sleeved on the outer surface of the endoscope lens. An outer soft end cap is installed outside the inner sleeve in an inserted mode, and a buckle extrusion mechanism is arranged between the outer soft end cap and the inner sleeve. According to the tip cap of the digestive endoscope, when the tip cap is installed, the inner sleeve needs to be inserted into the endoscope head in advance, the inner plastic sleeve is inserted into the inner sleeve, the inner sleeve can be extruded and deformed by the inner plastic sleeve, the anti-skid tooth points can be inserted into the outer surface of the endoscope head so as to increase firmness, and the positioning teeth and the inner plastic sleeve are clamped so that the tip cap can be installed conveniently. The inner sleeve and the inner plastic sleeve can be fixed together, the outer soft end cap can be firmly fixed to the outer surface of the endoscope head, and the possibility that the outer soft end cap falls off in the using process is reduced.

The utility model relates to the technical field of medical instruments and equipment, and discloses a simple digestive endoscopic surgery model which comprises a support. The endoscope can penetrate through the channel, and the channel is oppositely connected with the support; the clamping device is used for clamping the simulated tissue to enable the simulated tissue to be opened, and the clamping device is connected with the support through a first universal pipe; and the platform is used for supporting the simulated tissue and is oppositely connected with the clamping device, so that the simulated tissue can be opened on the platform. The channel disclosed by the utility model simulates a gastrointestinal channel of a human body, the clamping device is used for opening the simulated tissue, so that the simulated tissue plays a lesion part, the platform provides support for the simulated tissue, and the clamping device and the platform can be driven to be adjusted at any angle due to the arrangement of the first universal tube; and the distance between the device and the end part of the endoscope can be adjusted to a certain extent, so that the device has the advantages of adjustable exercise angle and full exercise.

The invention discloses a digestive endoscopic surgery treatment bed, and belongs to the technical field of medical auxiliary instruments, the digestive endoscopic surgery treatment bed comprises a treatment bed body, the treatment bed body is rotatably connected with a half-barrel-shaped placing cylinder, the treatment bed body is provided with a rotating mechanism for driving the placing cylinder to rotate, the treatment bed body is provided with three rotating locking mechanisms, and the rotating locking mechanisms are connected with the half-barrel-shaped placing cylinder. The rotary locking mechanism can lock the placing cylinder on the treatment bed body, sliding moving mechanisms are arranged on the treatment bed body and located on the two sides of the placing cylinder, and each sliding moving mechanism is provided with a flexible pressing actuator. By rotating the rotating mechanism and the half-barrel-shaped placing cylinder, automatic and accurate overturning of the body position of a patient is achieved; a traditional low-efficiency mode of manually carrying and turning over the general anesthesia patient is changed, the physical burden of medical staff is greatly relieved, the risk of iatrogenic injury of the cervical vertebra, joints and the like of the patient possibly caused in the carrying process is fundamentally avoided, and medical safety is improved.

The utility model belongs to the technical field of medical instruments, and particularly relates to a digestive endoscope oral pad which comprises a fixing plate and connecting plates, the connecting plates are fixedly connected to the two sides of the fixing plate, an auxiliary device is installed in the fixing plate and comprises a fixing unit and a supporting unit, the fixing unit is installed in the fixing plate, and the supporting unit is installed in the fixing plate. The supporting unit is installed on the front face of the fixing plate. According to the oral pad for the digestive endoscopy, by installing a fixing unit, a patient further holds bite plate shells in the mouth, the two bite plate shells make contact with the upper teeth and the lower teeth of the patient correspondingly, a telescopic rod is started, the telescopic rod pushes a center shaft, and therefore the center shaft pushes a connecting block to move; by rotating the rotating shaft, the expansion plate is overturned around the fixed shaft, so that the bite plate shell is driven to expand towards the outer side, the mouth of a patient is in a long-term open state, and a digestive endoscope is conveniently inserted.