108 results about "Bite plates" patented technology

The utility model discloses a false tooth occlusal frame, and belongs to the technical field of dental tools. The false tooth occlusal frame comprises a support internally provided with a cavity, the support is connected with an adjusting plate through a rotating shaft, the false tooth occlusal frame further comprises a lower occlusal plate and an upper occlusal plate, the lower occlusal plate and the upper occlusal plate are connected to the support and the adjusting plate through installation pieces respectively, and the top face of the lower occlusal plate faces the bottom face of the upper occlusal plate; the adjusting part is arranged in the cavity of the support, and the adjusting part is used for driving the lower biteplate to move up and down; through cooperative use of the spring, the inclined block, the mounting block and the pressing plate, the lower biteplate and the upper biteplate can be conveniently and independently disassembled and assembled, and the disassembly and assembly operation is rapid and convenient, so that a worker can conveniently clean and maintain the lower biteplate and the upper biteplate, and convenience is brought to the maintenance work of the worker.

The invention provides a mouth face swallowing function training device. The mouth face swallowing function training device comprises a shell, an occlusion training mechanism and an elastic force adjusting mechanism. The occlusion training mechanism comprises two occlusion assemblies which are symmetrically arranged; the occlusion assembly comprises an occlusion plate, a rotating shaft and an elastic telescopic piece, the middle of the occlusion plate is hinged to the shell through the rotating shaft, and one end of the occlusion plate extends into the shell; one end of the elastic telescopic piece is installed at the end, located in the shell, of the biteplate. The elastic force adjusting mechanism is arranged in the length direction of the biteplates and located between the two biteplates, the other end of the elastic telescopic piece is installed on the elastic force adjusting mechanism, and the elastic force adjusting mechanism can adjust the position of the other end of the elastic telescopic piece in the length direction of the biteplates. The elastic force adjusting mechanism adjusts the position of the other end of the elastic telescopic piece in the length direction of the biteplate, so that the elastic force of the elastic telescopic piece is adjusted, the resistance of the biteplate is adjusted, and the training device can adapt to patients with different illness states.

The present invention discloses a jaw support head clamp mechanism and an oral CBCT device. The jaw support head clamp mechanism includes a jaw support, a base, a bite plate, a slide bar arranged vertically, and a head clamp assembly. The jaw support and the slide bar are both fixedly connected to the base, and the bite plate can slide up and down relative to the jaw support. The head clamp assembly includes a base assembly, forehead side positioning devices, and a forehead top positioning device. The base assembly is slidably arranged on the slide bar, and a chute is arranged horizontally in the middle part thereof. The forehead side positioning devices include an opening and closing push rod, a left swing arm, and a right swing arm. The opening and closing push rod can slide along the chute and is configured to tighten or open the left swing arm and the right swing arm for limiting both sides of the forehead. The forehead top positioning device includes a spring piece and a forehead top plate that can slide up and down for limiting the upper part of the forehead. The present invention can comprehensively limit the freedom degree of the patient's head and can improve the shooting accuracy and efficiency when applied to an oral CBCT device.

The utility model discloses a waterproof heat-insulating PU (polyurethane) insulating impregnated glove which comprises an impregnated glove main body, the impregnated glove main body comprises a main glove body, a connecting sleeve is integrally arranged at the bottom end of the main glove body, an elastic band is arranged on the surface of the connecting sleeve, and a heat-insulating protective sleeve is arranged in the main glove body. By designing a reinforced wearing mechanism, after wearing, a reinforced connecting rope slides in a through hole to close a fixed connecting column on the surface of a connecting sleeve until the reinforced connecting rope is located in the through hole and is pulled and tightly pressed on the wrist; the tooth biteplate is driven to slide in the mounting groove in a limited manner under the action of deformation of the compression spring, and the tooth biteplate is stably compressed on the surfaces of the reinforcing connecting ropes to reinforce and mount the reinforcing connecting ropes, so that the impregnated glove main body is reinforced, worn and used after the two reinforcing connecting ropes are fixed, and the impregnated glove main body is still stably sleeved and worn after being used for a long time; and the reinforced fixity of the impregnated glove main body during wearing and use is improved.

The invention provides an orthodontic treatment biteplate device. The orthodontic treatment biteplate device comprises a main machine, a biteplate body and a tooth vibration part. By means of the fishbone-like structure of the biteplate body, the biteplate can deform within a certain range, and self-adaption to a dental arch curve of a patient is achieved. Meanwhile, the straight groove notch and the circular notch of the occlusal plate body are matched with the straight edge characteristic and the cylindrical characteristic of the tooth vibration piece, so that the tooth vibration piece can rotate within a certain range and is adaptive to tooth occlusion of the patient, and the tooth vibration piece cannot be separated from the occlusal plate body. In addition, tooth vibration pieces can be installed on the upper side and the lower side of the occlusal plate body according to vibration requirements, and accurate vibration force transmission for the teeth needing to be moved is achieved.

The utility model relates to the technical field of medical instruments, and provides a multifunctional training device for dysphagia, which comprises a grip, a first threaded column is fixed at one end of the grip, a first threaded cover is in threaded connection with the outer side of the first threaded column, a fixing plate is fixed in the middle of one side wall of the first threaded column, and a supporting plate is fixed at one end of the fixing plate. Fixing cylinders are symmetrically fixed to the side wall of the supporting plate, springs are symmetrically fixed to the side wall of the supporting plate, the springs are movably connected to the inner sides of the fixing cylinders in a sleeving mode, supporting columns are fixed to one ends of the springs, an occlusion plate is fixed to one ends of the supporting columns, and a hollow protection plate is movably connected to the outer side of one end of the occlusion plate in a sleeving mode. The utility model discloses can help patient to carry out bite training, exercise masseter muscle, assist patient to carry out swallowing training, alleviate swallowing disorder symptom, the portable is convenient to go out, can carry out closed protection to the internal structure when carrying, avoids the pollution of external pollutant, guarantees patient's safety and hygiene when using.

The utility model belongs to the technical field of pathological sampling instrument hanging knife rests, and particularly relates to a hanging knife rest for a pathological sampling instrument. Comprising a disinfection box, a box cover for sealing a box opening of the disinfection box is arranged at the box opening of the disinfection box, a bottom plate is mounted at the box bottom of the disinfection box, a mounting frame is arranged between the box opening of the disinfection box and the box cover, a first biteplate is fixed to the top of the disinfection box, and second biteplates are connected to the left side wall and the right side wall of the mounting frame; an airing rod is horizontally arranged in the mounting frame, and an airing assembly for airing articles is arranged on the airing rod. Three items of work can be completed only by controlling ascending and descending of the mounting frame, and nursing work of pathological sampling instruments can be completed conveniently and rapidly.

Provided is an orthodontic appliance, comprising a fixed base (1) that can be bonded and fixed to a tooth surface, a movable wing (2), and a spring (3). The movable wing (2) is slidably positioned on the fixed base (1); a bottom surface of the fixed base (1) is machined with a bonding pattern, one end of the surface is machined with a wing base (12), and the middle of the wing base (12) is provided with a sliding groove (121) in a direction of the central plane; the movable wing (2) comprises an occlusal splint (21) and a sliding rod (22), and the sliding rod (22) is positioned in the sliding groove (121) and can move back and forth along the sliding groove (121); the spring (3) is sleeved on the sliding rod (22), and one end of the spring (3) abuts against the wing base (12) and always maintains a tendency in which the movable wing (2) is away from the wing base (12); the occlusal splint (21) can move toward the wing base (12) end under the driving of the tooth occlusal force and generate an orthodontic thrust on the wing base (12) by means of the spring (3). Using the occlusal splint (21) on the movable wing (2), the occlusal force generated by each occlusal action is picked up and converted into an adduction force on the anterior teeth, thereby forming a dynamic orthodontic process and minimizing the impact on the posterior teeth.

The invention belongs to the technical field of oral occlusion relation preparation, and particularly relates to an occlusion quantitative lifting auxiliary tool and an occlusion relation preparation method. The problems that a direct preparation method cannot quantitatively lift occlusion and depends on patient training and doctor experience are accurately solved, accurate control over the vertical distance is achieved through standardized structural design, recording errors caused by unstable occlusion height and material deformation are thoroughly avoided, and the manufacturing precision of oral cavity devices such as an occlusal plate is remarkably improved. Through the modular design of the replaceable occlusion part, the lower jaw guide sliding block, the upper jaw guide sliding block and the like, all occlusion relation making scenes where the vertical distance of a tooth jaw patient needs to be increased are matched, multiple horizontal relations such as the muscle position, the stable position and the protraction position are covered, the defects that an existing tool is single in function and only suitable for snore resisting equipment making are overcome, and the tool is suitable for being used for making snore resisting equipment. And meanwhile, materials such as traditional wax sheets and occlusion recording silicon rubber are compatible, and the modern mode of direct preparation of a digital optical scanner is adopted, so that different clinical operation requirements are met.

The present invention relates to the field of oral surgery technology, and in particular to a support device for oral surgery. The support device for oral surgery comprises an upper bite plate, a lower bite plate and a side support mechanism, wherein the upper bite plate is an upper arc-shaped structure, and the lower bite plate is a lower arc-shaped structure symmetrical to the upper bite plate, and one end of the upper bite plate and the lower bite plate is connected by a side support mechanism, and the other end is connected by another side support mechanism or by a connecting rod; the side support mechanism comprises a support rod, a sleeve, an insertion rod and a side support plate, wherein a support rod is fixed between the corresponding ends of the upper bite plate and the lower bite plate, a sleeve is movably sleeved on the outer wall of the support rod, and the upper end face and the lower end face of the sleeve are both provided with an insertion rod, and the side support plate is fixed to the side wall of the sleeve; the lower end face of one end of the upper bite plate is arranged in a circular array with a circle of upper plug holes matching the insertion rod, and the upper end face of one end of the lower bite plate is arranged in a circular array with a circle of lower plug holes matching the insertion rod. The present invention has a simple structure, is easy to use, and does not block the line of sight.

A mandibular advancement device (MAD) facilitating protrusion, retraction, translation, and rotation of a mandible is provided. The MAD comprises a fit connector, and left and right bite tray assemblies. Each bite tray assembly, mirror images of each other, comprise top and bottom bite plates, hinge plate, pin, and circumduction anchor rod. The top and bottom bite plates cradle upper and lower teeth respectively, while the hinge plate facilitates mouth opening and closing via a pin connection to the top bite plate and secure yet mobile connections to the bottom bite plate via the circumduction anchor rod. This rod, insertable into elliptical cylinder holes and semi-cylindrical depressions, allows lateral translation and rotation between connected parts. The hinge plate incorporates a flexible member for mandible protrusion and retraction, teeth-like structures to maintain minimum advancement, and a tension prong for stable fit. Adjustable-length circumduction anchor rods cater to varying mandibular advancement needs.

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 invention discloses a personalized biteplate digital design system and method based on artificial intelligence, and relates to the technical field of oral medicine. According to the method, a whole-process intelligent design system is constructed by collecting multi-dimensional oral data and adopting technical means of dynamic occlusion trajectory and pressure field coupling modeling, pathologic feature and design parameter generative adversarial network mapping, reinforcement learning closed-loop iterative optimization, transfer learning curative effect prediction, scheme optimization and the like. According to the system and the method, dynamic bite fit, accurate pathological feature fit, dynamic design parameter optimization and treatment effect pre-judgment are realized, the defects of insufficient pertinence, poor fit and long treatment period in the prior art are overcome, the design precision, the fit and the treatment effect of the personalized bite plate are remarkably improved, and the application prospect is wide. Support is provided for precise and personalized treatment of temporomandibular joint disorder, and intelligent development of oral cavity digital medical treatment is promoted.

The utility model relates to the technical field of biteplates, and discloses a magnetic biteplate which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is located at the outer end of the main body mechanism, and the main body mechanism comprises a first upper jaw membrane pressing frame, a second lower jaw membrane pressing frame and a magnetic repulsion assembly. The second mandibular membrane pressing frame is movably installed below the first maxillary membrane pressing frame, the magnetic repulsion assembly is movably installed at the lower end of the first maxillary membrane pressing frame, and the magnetic repulsion assembly is movably installed at the upper end of the second mandibular membrane pressing frame. According to the magnetic biteplate, a main body mechanism is installed, the core part of the magnetic biteplate is composed of neodymium magnets with strong magnetic force, the magnets are placed on a rear tooth occlusal surface part of a film pressing frame according to requirements, and when the magnetic biteplates of the upper and lower jaws are close to each other, due to mutual repulsion of the same polarities of the magnetic force parts, stable opening force is generated; the force enables the upper jaw and the lower jaw to be separated, so that muscle fibers of lifting jaw muscle groups are lengthened and relaxed, and the practicability of the biteplate is improved.

The utility model discloses a disposable medical laryngeal mask, which relates to the technical field of medical laryngeal masks, and comprises a cuff, a throat tube and an inflation tube, the inflation tube is communicated with the cuff, the medical laryngeal mask further comprises an occlusion assembly, the occlusion assembly comprises an occlusion plate and a sleeve, the sleeve is sleeved on the throat tube, and the sleeve is sleeved on the sleeve. The sleeve is provided with an occlusal plate and a baffle in sequence, the occlusal plate is rotationally connected with the sleeve through a rotating shaft, the baffle is arranged far away from the cuff, and the control device is used for controlling the inclination direction of the occlusal plate; according to the medical laryngeal mask, the biteplate is rotationally connected with the sleeve through the rotating shaft, the tilting direction of the biteplate can be changed after teeth of a patient pass through the rotating shaft, the medical laryngeal mask can be clamped in the oral cavity of the patient, the medical laryngeal mask is clamped outside the oral cavity of the patient through the arranged baffle, the throat pipe can be prevented from moving towards the interior of the oral cavity, and fixing of the laryngeal mask is achieved; the stability of the laryngeal mask and the comfort of a patient are improved.

The invention relates to the technical field of feeders, in particular to an oral post-operation food feeder which comprises a food storage cylinder, one end of the food storage cylinder is communicated with a feeding pipe, two symmetrically-arranged side holes are formed in the end, away from the food storage cylinder, of the feeding pipe, and a piston is slidably mounted in the food storage cylinder; a piston rod is fixedly installed on the side, away from the feeding pipe, of the piston, a fixing ring sleeves the outer portion of the end, close to the two side holes, of the feeding pipe, an annular anti-biting plate is fixedly installed on the side, close to the two side holes, of the fixing ring, and a first annular silica gel ring fixedly sleeves the outer portion of the annular anti-biting plate; a second annular silica gel ring is fixedly arranged in the fixing ring in a sleeved mode, and an elastic pressing piece is fixedly installed on the side, away from the annular anti-bite plate, of the fixing ring. The feeding device has the advantages that the problems that in the prior art, when a patient occludes the outer portion of a feeding pipe, the interior of the feeding pipe is blocked, the liquid food conveying speed is greatly reduced, and the feeding pipe is broken are solved.

The utility model relates to the technical field of appliances, in particular to a double-plate appliance which comprises an upper tooth socket and a lower tooth socket, the upper tooth socket is detachably connected with an upper biteplate, the lower tooth socket is detachably connected with a lower biteplate, the upper biteplate and the lower biteplate are respectively provided with a biteplate inclined surface, and the upper biteplate and the lower biteplate are respectively provided with a biteplate inclined surface. And when the upper tooth socket is occluded with the lower tooth socket, the occlusion inclined surface on the upper occlusion plate is attached to the occlusion inclined surface on the lower occlusion plate so as to guide the upper occlusion plate and the lower occlusion plate to move. The method has the effect of reducing the cost.

The invention relates to the technical field of medical instruments, and discloses an orthodontic accelerator based on a micro magnetic field, the orthodontic accelerator comprises an outer box and a machine body, the machine body is located at the right lower part of the outer box, the right side of the outer box is provided with a connecting assembly, and the top of the machine body is provided with a fixing assembly connected with the connecting assembly; according to the orthodontic accelerator based on the micro magnetic field, by arranging the adjusting mechanism and the occlusion assembly, the purpose that the size of the occlusion plate can be adjusted is achieved, and by arranging the mistaken eating prevention mechanism, under the normal condition, the size of the occlusion plate can be adjusted, and the size of the occlusion plate can be adjusted. The U-shaped block is sleeved on the outer side of the rectangular plate, the transverse plate penetrates through the mounting hole of the rectangular plate, the clamping rod is clamped into the clamping hole of the transverse plate, so that the U-shaped block is fixed on the rectangular plate, when the occlusion assembly is contained in the mouth, the arc-shaped plate is attached to the face of a patient, the patient can be prevented from eating the occlusion assembly by mistake, and the purpose of arranging the mistaken eating prevention structure is achieved.

The application discloses a preparation method of a bite plate based on a force-induced luminescent material. It belongs to the technical field of oral bite plates and can prepare a bite plate capable of directly and real-timely converting bite force into a visible light signal through a simple process, so that the visualization and semi-quantitative detection of bite contact are realized. The preparation method of the bite plate based on the force-induced luminescent material is characterized in that the method comprises the following steps: (1) synthesizing europium / dysprosium co-doped strontium aluminate force-induced luminescent material SAOED by using a high-temperature solid-phase method, wherein the doping concentration of europium is 2%, and the doping concentration of dysprosium is 1%; (2) mixing the SAOED powder obtained in the step (1) with denture powder according to a mass ratio of 1:7, adding ethanol for dispersion and grinding; (3) adding denture water in a proportion corresponding to the denture powder to the mixture in the step (2), uniformly stirring, and then performing compression molding; and (4) performing water bath heating solidification on the compression molded material, and then performing polishing to obtain the bite plate.

The utility model relates to medical instrument technical field, propose a kind of oral cavity saliva suction pipe with fixed function, including saliva suction pipe body, the one end of saliva suction pipe body is the same as gingival separator like sickle shape, the outside wall of saliva suction pipe body is provided with occlusal block, the side of occlusal block is provided with guide pipe, and saliva suction pipe body is inserted in occlusal block and guide pipe, the left and right sides of occlusal block are both fixedly installed with H-shaped casing, the upper and lower sides of occlusal block are both provided with occlusal plate, the side of two occlusal plates is all rectangular fixedly installed with four fixed columns, and fixed column and H-shaped casing are inserted between, the side of fixed column is sequentially provided with multiple insertion holes from top to bottom, one of H-shaped casing is provided with a pair of locking components, by the one end of saliva suction pipe body is set to sickle shape, to make the working end of saliva suction pipe body have a little angle, to further when extracting embedded tooth, can be used to fix incised gingival, assist doctor treatment, saliva can also continue to be sucked.

The utility model provides a double-hole anti-drop elastic cord adjusting buckle, which relates to the technical field of elastic cord buckles, and comprises a buckle shell, a partition plate is connected between the inner surface walls of the front side and the rear side of the buckle shell, two groups of occlusion mechanisms are symmetrically arranged in the buckle shell and positioned on the two sides of the partition plate, and each occlusion mechanism comprises a rotating shaft, and bolts are inserted into the front end and the rear end of the rotating shaft. In the use process, after the pinching plate is pinched, the biteplate can be driven to rotate with the rotating shaft as the circle center, so that extrusion and clamping on the elastic rope are lost after the biteplate is far away from the partition plate, and then the position of the buckle shell on the elastic rope can be adjusted at will; after the pinching plate is loosened, the pinching plate and the biteplate can be driven to reset under the cooperation of the first hook, the second hook and the tie bar, so that the elastic rope is extruded and fixed again, the overall structure is small and exquisite, use is convenient, the tightness degree of the elastic rope can be adjusted according to needs, and the comfort and firmness of the fixed elastic rope are ensured.

The invention relates to the technical field of medical apparatus and instruments, and discloses an oral cavity catheter with distraction and negative pressure suction functions and a preparation process, the oral cavity catheter comprises an occlusion block, a negative pressure box, a protection blade assembly, a cheek protection part, a water outlet pipe, an atomization nozzle and a water inlet assembly; a plurality of connecting grooves are formed in the outer side of the occlusion block, detachable occlusion plates are arranged in the connecting grooves, elastic pieces are fixedly connected to the outer sides of the detachable occlusion plates, and the outer sides of the elastic pieces abut against the outer side of the occlusion block; one end of the meshing block is fixedly connected with the negative pressure box, and a negative pressure suction head assembly is connected to the inner side of the negative pressure box in an embedded mode. The end, opposite to the negative pressure box, of the meshing block is fixedly connected with the protection blade assembly. The oral cavity catheter with the distraction and negative pressure suction functions and the preparation process have the advantages that the position of the biteplate body can be adjusted to meet the oral cavity sizes of different patients, meanwhile, normal saline can be injected into the oral cavity regularly, and the oral mucosa of the patients is prevented from being dry.

1. The name of the product under this design: Laminating Machine (R1510). 2. Application of the product with this design: used for denture processing, mainly used for making oral hard tissue molded dentures, orthodontic retainers, internal soft and external hard bite plates, soft bite plates, bleaching braces and sports bite plates, etc. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present invention provides an oral and maxillofacial muscle strength rehabilitation training device, comprising a first bite plate and a second bite plate, a mounting box and a mounting block are arranged between the two bite plates, a sliding mechanism is arranged outside the mounting box for the two bite plates to slide towards each other or move away from each other, a supporting mechanism is arranged inside the mounting box to structurally support the two bite plates, and a limiting mechanism is arranged at the mounting block for structurally limiting the two bite plates when they are closed in place; the supporting mechanism comprises an airbag, the airbag is arranged in the inner cavity of the mounting box, the side wall of the mounting box is arranged with a moving groove, a moving plate is slidably inserted in the moving groove, an extrusion plate is arranged inside the moving plate, the extrusion plate extends to the corresponding outer end of the airbag, and when the airbag expands, the extrusion plate is pushed to contact the two bite plates, thereby supporting the two bite plates. The present invention can cooperate with the patient to perform the opening and closing action of the oral cavity, thereby facilitating the rehabilitation training of the patient.

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.

In one aspect of the present application, a shell-shaped tooth repositioner is provided, it comprises: N successive shell-shaped tooth repositioners corresponding to N successive steps, respectively, where each of the N shell-shaped tooth repositioners is for repositioning teeth from an initial tooth arrangement of a corresponding step to a target tooth arrangement of the corresponding step, where a first bite plate is provided on a lingual side of a portion corresponding to a first tooth of each of the N shell-shaped tooth repositioners, for opening bite of anterior teeth, where relative positions between the first bite plates on the N shell-shaped tooth repositioners and the first tooth are such that each of the N shell-shaped tooth repositioners is able to open bite of the anterior teeth to an extent that is substantially consistent with a target extent, where N is a natural number greater than 3.

The invention discloses a multifunctional individualized buccal device for radiotherapy of head and neck tumors. The multifunctional individualized buccal device comprises a bottom plate, a lower bite plate and an upper bite plate, a lower bite plate is arranged at the upper end of the baseplate; the front end of the lower bite plate is slidably connected with an upper bite plate; arc-shaped frames are symmetrically arranged on two sides of the bottom plate; lifting grooves are formed in the front ends of the arc-shaped frames on the two sides and slidably connected with lower biting plates; the rear end of the lifting groove on one side is provided with a limiting groove slidably connected with a slider. Sliding sleeves are symmetrically arranged on the two sides of the lower bite plate and slidably connected with the upper bite plate, rotating bases are arranged on the inner sides of the sliding sleeves, and lifting columns are arranged on the outer sides and slidably connected with lifting grooves. The rotating seats are fixedly connected with rotating shafts; the rotating shafts are movably connected with cheek plates; sliding rods are symmetrically arranged on two sides of the lower bite plate and are slidably connected with sliding sleeves; a hole in the middle of the sliding rod on one side is in threaded connection with an expanding screw; the front end of the distraction screw rod is rotationally connected with the sliding sleeve; the adjustable cheek plates can support and fix the cheeks on the two sides according to needs, and the soft tissues of the cheeks are expanded towards the two sides.