96 results about "Upper teeth" patented technology

The invention relates to the technical field of tooth occlusal force measurement, in particular to a tooth occlusal force measurement system and method. According to the technical scheme, a plurality of oral impression connection supporting assemblies are arranged, and the supporting assemblies are used for bearing the plurality of oral impressions to enable the oral impressions to be in preset spatial positions and guiding upper teeth to be vertically occluded and lower teeth to be occluded at different depths in a chewing posture when a user occludes each oral impression; performing three-dimensional scanning on all the occluded oral impression through a scanning assembly on the supporting assembly, and outputting scanning data to the outside; and generating an occlusal force cloud picture of the user under different occlusal depths based on the scanning data through a processing terminal connected with the scanning component. According to the technical scheme, the lower teeth perform occlusion with corresponding depths on different oral cavity impressions based on the natural chewing posture, the occlusion contact forms of the upper and lower teeth of the user under different occlusion depths can be recorded, and the occlusal force distribution measurement of the user under the natural occlusion behavior under different occlusion depths is realized.

To provide oral appliances that can be used to treat sleep apnea syndrome (SAS) ranging from mild to severe. [Solution] One embodiment of an oral appliance for sleep apnea is an oral appliance that is fitted into the user's oral cavity. The oral appliance comprises an upper jaw portion, a lower jaw portion, and a drive unit. The upper jaw portion has a shape that mimics the user's upper teeth and contacts the upper teeth. The lower jaw portion has a shape that mimics the user's lower teeth and contacts the lower teeth. The drive unit connects the upper jaw portion and the lower jaw portion so as to be able to change the relative position of the lower jaw portion with respect to the upper jaw portion, and drives the lower jaw portion. The drive unit has a control circuit that determines whether the user is in a state of apnea based on sensor information obtained from a sensor that detects the user's apnea state, and if the user is in a state of apnea, drives the lower jaw portion toward the user's forward position, and if the user is not in a state of apnea, drives the lower jaw portion to return to the user's resting position.

The application discloses an integrated auxiliary mouth gag for orthodontics, which comprises a left handle and a right handle, the left handle and the right handle are sleeved on the outside of a hinged sleeve, and can rotate relative to each other, the front end of the left handle and the right handle are fixedly connected with a front opening rod, the front opening rod is in a U shape, a connecting rod is arranged between the left handle and the right handle, the connecting rod is controlled through a locking assembly, a side opening rod is arranged at the position of the hinged sleeve, and the side opening rod is in a U shape. The mouth gag is provided with two front opening rods for supporting upper teeth and lower teeth, and is also provided with a side opening rod for pulling the corners of the mouth on the side, so that the mouth is better exposed to the doctor, the mouth gag is placed on one side of the mouth for use, and does not affect the treatment of the doctor, and in addition, the side opening rod of the mouth gag can be detached and separated from the main body of the mouth gag, is more flexible, and reduces operation complexity.

The utility model relates to the field of adhesive tape machines, in particular to an adhesive tape machine which comprises an adhesive tape cabin, a driving mechanism comprises a side end supporting plate and a longitudinal mounting plate, an upper tooth pressing plate is arranged above the inner side of the longitudinal mounting plate, and adhesive tape pressing lower teeth are arranged below the upper tooth pressing plate and located on the inner side of the longitudinal mounting plate. Limiting sliding grooves are formed in the positions, located on the inner side wall of the longitudinal installation plate, of the outer side ends of the upper pressing tooth plate and the rubber pressing lower teeth, a lower pressing tooth plate is installed on the position, located on the inner side of the longitudinal installation plate, below the rubber pressing lower teeth, an arc-shaped swing frame is arranged on the inner side of the side end supporting plate, and linkage plates are connected between the arc-shaped swing frame and the upper pressing tooth plate and between the arc-shaped swing frame and the rubber pressing lower teeth. A push plate is installed at the lower end of the arc-shaped swing frame. After an upper pressing tooth plate is matched with a rubber pressing lower tooth to fold a conveyed rubber belt, the rubber belt is driven by a push plate to move back and forth in a limiting sliding groove, the rubber belt is integrally occluded and flattened under the action of a lower pressing tooth plate, and subsequent drawing and pulling can be facilitated by folding the end part of the rubber belt at a cut-off position.

The utility model relates to the technical field of dies, and particularly discloses a shark-shaped bubble machine die. Wherein the front mold core; the rear mold core is provided with a first mold core and a second mold core which are used for forming the inner side part of the shark tooth part; the tooth side rib position insert is arranged on the rear mold core, and a slope used for demolding is arranged on the side wall of the tooth side rib position insert; the tooth core pulling structure comprises a first tooth forming sliding block matched with the first mold core, a first guide structure arranged on the first tooth forming sliding block, a second tooth forming sliding block matched with the second mold core and a second guide structure arranged on the second tooth forming sliding block; each of the first tooth forming sliding block and the second tooth forming sliding block comprises an upper tooth forming part for forming the front side part of the upper tooth of the shark and a lower tooth forming part for forming the front side part of the lower tooth of the shark. The forming device is good in forming effect and low in production cost.

The dental assembly comprises a first tooth socket and a second tooth socket which correspond to maxillary teeth and mandibular teeth respectively, and a plurality of retention structures, the first tooth socket is provided with a first buccal surface and a first lingual surface which are oppositely arranged, and the second tooth socket is provided with a second buccal surface and a second lingual surface which are oppositely arranged; the retention structures are connected with the first buccal surface and the second buccal surface, or the retention structures are connected with the first lingual surface and the second lingual surface, the dental assembly comprises a first half jaw and a second half jaw which are positioned on two sides of a dental midline, and the plurality of retention structures comprise a first retention structure and a second retention structure which are positioned on the first half jaw. The first retention structure is closer to the tooth midline than the second retention structure. According to the invention, relative rotation and relative movement of the first tooth socket and the second tooth socket are limited through cooperation of the first retention structure and the second retention structure, so that the relative position between the first tooth socket and the second tooth socket can be effectively controlled, and the correction effect can be effectively improved, such as in an application scene of jaw position adjustment.

The utility model relates to the technical field of pull binding tape sewing, and discloses a pull binding tape auxiliary sewing device which comprises a needle plate, a presser foot and a needle threading die which are matched with each other, a plurality of groups of teeth are arranged at the top of the needle threading die, a group of teeth in the middle are ground to be flat and form a clamping groove matched with the thickness of a binding tape, the needle plate is provided with a binding tape groove, and the needle plate is provided with a clamping groove matched with the thickness of the binding tape. A left gauge plate and a right gauge plate which are used for limiting movement of the binding tape are arranged on the two sides of the binding tape groove respectively, and the needle plate is further provided with an upper tooth groove and a lower tooth groove which are used for the teeth to penetrate through. According to the utility model, the binding tape is positioned by the binding tape groove on the needle plate, the left and right gauge plates and the clamping groove on the needle plate die, the upper tooth groove and the lower tooth groove guide the trend of cloth and the binding tape, and the clamping groove enables the raised teeth on the needle plate to be rubbed down, so that the thickness of the binding tape can be matched during sewing, and the sewing is not blocked by the raised teeth to cause left-right swing; the left and right positions avoid the displacement of the binding tape in the sewing process, so that the binding tape can be accurately sewn.

The utility model provides a container cover and a liquid heating container, and the container cover comprises a cover body which is provided with a water outlet channel and is also provided with an external tooth part and a chute; the water sealing assembly is mounted in the cover body in a sliding manner; and the switch assembly is installed on the cover body and used for driving the water sealing assembly to slide in the cover body so that the water sealing assembly can open or close the water outlet channel. The switch assembly comprises a limiting piece, the limiting piece is provided with an upper tooth part and a lower tooth part, and the upper tooth part is used for being in sliding fit with the outer tooth part so that the limiting piece can rotate relative to the cover body; the lower tooth part is used for being in sliding fit with the sliding groove, the sliding groove comprises a stop groove, and when the limiting piece rotates till the lower tooth part is clamped with the stop groove, the water sealing assembly can open the water outlet channel; and when the limiting piece rotates to the lower tooth part and is released from the locking groove, the water sealing assembly can close the water outlet channel. The structure of the container cover can save the number of parts of the container cover, so that the manufacturing cost of the container cover is reduced, and the assembling efficiency of the container cover is improved.

The utility model relates to the technical field of rehabilitation medical instruments, and discloses a dysphagia training aid which comprises a connecting column and a cooling rod, a fixing seat is arranged on the right side wall of the connecting column, and two supporting assemblies which are symmetrically distributed up and down are arranged in the fixing seat. And the right side walls of the two supporting assemblies extend to the right side of the fixing base, a connecting groove is formed in the fixing base, and a first limiting clamp is arranged on the left side wall of the connecting column. According to the dysphagia training device, by arranging the supporting assembly, firstly, a patient places the upper teeth on the top of an upper supporting plate and then places the lower teeth on the lower portion of a lower supporting plate, and at the moment, two threaded shafts are rotated, so that the upper supporting plate and the lower supporting plate move oppositely, and the upper teeth and the lower teeth are opened and supported; the cooling rod is prevented from being bitten and damaged, the practicability of the device is improved, and the device is convenient for a patient to use.

The utility model relates to the technical field of dentistry. The utility model relates to a muscle agonist for linked correction of upper and lower teeth. The muscle agonist comprises an upper invisible tooth socket and a lower invisible tooth socket, wherein the upper invisible tooth socket is sleeved outside upper teeth; the lower invisible tooth socket is sleeved outside lower teeth; the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket; the occlusal surface at the molar position of the lower invisible tooth socket is connected or detachably connected with the occlusal surface at the molar position of the upper invisible tooth socket through a V-shaped bent connecting strip; an angle forming plate is clamped between the upper invisible tooth socket and the lower invisible tooth socket, and the angle forming plate is positioned on the occlusal surface of at least one of the upper invisible tooth socket and the lower invisible tooth socket. According to the utility model, by optimizing the structure of the muscle agonist, the upper invisible tooth socket can be conveniently matched with upper teeth, and after the upper invisible tooth socket is matched with lower teeth, the incisor part of the lower invisible tooth socket is detachably connected with the incisor part of the upper invisible tooth socket, so that the alignment of an upper jaw and a lower jaw is realized, and the correction of dentition deformity of relative protuberance of the upper jaw and retroduction of the lower jaw is realized.

An ear plug includes an elongated body sized and shaped to be partially inserted into an ear canal of a wearer, in which the body includes a negative Poisson's ratio (NPR) polymer foam material having a Poisson's ratio of between 0 and −1. A mouth guard includes an arc-shaped element sized to be received into a mouth of a wearer. The arc-shaped element has an outer wall, an inner wall, and a biting wall connecting the outer wall and the inner wall. The outer wall, the inner wall, and the biting wall define a channel that is sized to receive upper teeth of the wearer or lower teeth of the wearer. The outer wall, the biting wall, or both includes a negative Poisson's ratio (NPR) material having a Poisson's ratio between 0 and −1.

To provide an oral cavity model capable of reproducing the state of upper and lower teeth and occlusion of a patient. [Solution] The oral cavity model 10 is three-dimensionally shaped for each patient and has an upper jaw section 20 with a plurality of upper teeth sections 21 that mimic all of the patient's upper teeth and an upper gum section 22 that mimics the upper gums, a lower jaw section 30 with a plurality of lower teeth sections 31 that mimic all of the patient's lower teeth and a lower gum section 32 that mimics the lower gums, and a connecting member 40 that connects the upper jaw section and the lower jaw section in an openable and closable manner.

The utility model relates to a sponge cushion and a supporting cushion of a zipper-like structure. The sponge mat with the zipper-like structure comprises an upper layer and a lower layer, a plurality of upper teeth are arranged at the bottom of the upper layer, a plurality of lower teeth are arranged at the top of the lower layer, the upper teeth are meshed with the lower teeth, the density of the lower layer is larger than or equal to 25 kg / m < 3 >, and the difference value between the density of the lower layer and the density of the upper layer is 2-5 kg / m < 3 >. The sponge mat comprises the upper layer and the lower layer, the upper teeth are additionally arranged at the bottom of the upper layer, the lower teeth are additionally arranged at the top of the lower layer, the upper teeth are meshed with the lower teeth, the density of the lower layer is larger than or equal to 25 kg / m < 3 >, and the difference value between the density of the lower layer and the density of the upper layer is 2-5 kg / m < 3 >, so that a differential density structure of the upper layer and the lower layer can be formed; therefore, a progressive supporting system is formed, and the problems that in the prior art, due to'pressure fault 'generated by discontinuous mechanical transition between layers, shoulders, buttocks and other parts are subjected to sunken compression, but supporting suspension occurs to the waist, and the risk of stress unbalance of the spine is aggravated are solved.

The utility model discloses a pressure sore prevention tracheal catheter which comprises a tracheal catheter body, a fixator, a fixing piece and a pressure reduction protective sleeve, an air bag is arranged on the tracheal catheter body, an inflation tube is integrally connected to the middle of the bottom face of the tracheal catheter body and used for inflating the air bag, and the fixator is suitable for being supported between upper teeth and lower teeth of a patient. The fixing device is used for opening the mouth of a patient, a limiting groove is formed in the outer surface of the fixing device in the circumferential direction so as to limit upper teeth and lower teeth of the patient, a through hole is formed in the fixing device, the tracheal catheter is arranged in the through hole in a penetrating mode, and the fixing piece is arranged on the front side of the fixing device. The fixing device is used for fixing the tracheal catheter in the fixing device, and the pressure reduction protection sleeve is arranged on the outer surface of the tracheal catheter and the outer surface of the inflation tube in a sleeving mode and used for relieving pressure on the oral mucosa of a patient. The functionality of the catheter is guaranteed, the safety experience of a patient is emphasized, and discomfort and complications caused by intubation are reduced.

The invention belongs to the field of machining, and relates to a compression type locknut which comprises a main nut and an auxiliary nut, a cone is arranged on the outer side of the main nut, external threads are arranged on the cone, a taper hole is formed in the inner side of the auxiliary nut, and internal threads are arranged on the auxiliary nut; firstly tightening the main nut and then tightening the auxiliary nut; when the auxiliary nut is tightened, the cone thread of the main nut and the taper hole thread of the auxiliary nut are screwed in in a matched mode, the taper thread deviates forwards in the axial direction relative to the internal thread of the nut till the contact face of the internal thread of the auxiliary nut and the bolt is changed from the lower tooth face to the upper tooth face, and the main nut still keeps combination of the original lower tooth face. Therefore, a compression force is generated between the main nut and the auxiliary nut, the compression force is independent of the main nut and the auxiliary nut, the fastening state of the nut can be effectively kept during vibration, the friction force of threads is ensured to be unchanged, and the anti-loosening effect is achieved. The machining precision is low, special equipment is not needed, and the cost can be effectively reduced.

The application provides a high-position traction extraoral arch appliance, which comprises an upper dental case, a traction mechanism and a headgear; the upper dental case is matched with upper teeth; the traction mechanism comprises an extraoral arch, a connecting piece and an adjusting mechanism; one end of the extraoral arch is installed on the upper dental case, the other end of the extraoral arch is connected with one end of the connecting piece, and the angle between the extraoral arch and the connecting piece can be adjusted through the adjusting mechanism; the headgear can be worn on the head, and the end of the connecting piece away from the extraoral arch is installed on the headgear; in the application, when the angle of the upper jaw changes, the angle between the extraoral arch and the connecting piece is adjusted through the adjusting mechanism, so as to adjust the angle of the headgear to the upper dental case, and the traction mechanism can be used to traction the upper jaw at the best angle; and the upper jaw and the upper dental case are used for correction at the same time, so that the correction effect can be greatly improved.

The utility model relates to the technical field of oral medicine, in particular to a comprehensive tooth adjusting and grinding training model which comprises an upper jaw and a lower jaw, the upper jaw comprises an upper tooth socket, upper teeth are installed on the upper tooth socket, the lower jaw comprises a lower tooth socket, and lower teeth are installed on the lower tooth socket. Tooth socket pits which are consistent with the tooth roots of the corresponding teeth in shape and size are formed in the corresponding tooth positions of the upper tooth socket and the lower tooth socket, and a through hole through which the upper tooth and the lower tooth can be conveniently detached is formed in the bottom of each tooth socket pit.

This invention belongs to the field of anti-snoring technology, specifically a silicone anti-snoring device. It comprises an integrally molded silicone body consisting of an occlusal pad, an upper labial shield, a tongue induction screen, and a lower labial shield. Both ends of the upper and lower labial shields extend to the end face of the occlusal pad via buccal screens. A connecting portion exists between the occlusal pad and the tongue induction screen. This connecting portion is smooth and without protrusions in the Z-axis, and the corner surface of the occlusal pad away from the connecting portion is smooth. The smooth and non-protruding connecting portion in the Z-axis eliminates the palatal base of the maxillary teeth, making the tongue more easily lifted by the tongue induction screen. The tongue induction screen pushes the tongue from the floor of the mouth to the palatal side of the upper teeth, opening the airway and achieving buccal and lingual muscle balance. Patients can choose one, two, or three stages of mandibular protraction treatment based on their snoring symptom relief and temporomandibular joint symptoms. By protruding the mandible, the airway is further opened.

The utility model relates to the technical field of medical instruments, in particular to an anti-opening sample tube which comprises a tube body and a tube cover in threaded connection with the tube body, an annular block is formed on the outer side of the tube body, and a sleeve which covers the annular block and can also extend into the tube cover is connected to the outer side of the tube body in a sleeved mode. The elastic part is located in the sleeve and located above the ring block, a plurality of guide blocks which are all connected with the ring block in a sliding mode are formed on the inner side of the sleeve, a plurality of upper teeth which extend upwards are formed on the top of the sleeve, and a plurality of lower teeth which can be meshed with the upper teeth are formed in the tube cover. According to the anti-opening sample tube, the tube cover and the upper portion of the tube body are screwed tightly, when the tube cover rotates clockwise, the upper teeth of the tube cover push the lower teeth, so that the sleeve downwards extrudes the elastic part until the tube cover is screwed to the limit, and under the action of the elastic part, the sleeve can be pushed to eject upwards, so that the upper teeth and the lower teeth are meshed; therefore, the effect of locking the pipe cover can be achieved through meshing, and loosening or mistaken opening is prevented.

The invention discloses a quick-release fixing assembly. The quick-release fixing assembly comprises a supporting frame. The first plate and the second plate are stacked in the axial direction; the upper tooth limiting block and the lower tooth limiting block are axially contained in the cavity, a plurality of upper tooth tips extending downwards in the axial direction are arranged at the lower end of the upper tooth limiting block, and a plurality of lower tooth tips extending upwards in the axial direction are arranged at the upper end of the lower tooth limiting block; the piston axially penetrates through the upper tooth limiting block and the lower tooth limiting block; the piston is provided with a rod part axially extending and a pushing part annularly distributed on the rod part; the limiting ball is located between the upper tooth limiting block and the lower tooth limiting block; the elastic piece acts on the pushing part; at least two of the multiple upper grooves are different in depth, so that the second plate is switched between the locking state and the unlocking state. The upper tooth limiting block and the lower tooth limiting block which are matched with each other are arranged in the cavity of the supporting frame, and the piston is switched between different axial positions, so that rapid fixing and releasing of the second plate are completed, and assembling operation is simplified.

The utility model relates to the technical field of medical instruments, in particular to a rehabilitation device for treating dysphagia, which comprises a staple food tube, an adjusting rod is in threaded connection with one side of the staple food tube, a piston block is rotatably connected with one side of the adjusting rod, a sleeve is fixedly connected with one side of the staple food tube, and a tooth socket is elastically connected with one side of the sleeve. One side of the staple food pipe is in threaded connection with a liquid outlet, one side of the staple food pipe is fixedly connected with a storage box, and one side of the storage box is fixedly connected with a motor. Compared with the prior art, the utility model has the advantages that firstly, ground and crushed food is placed in the storage box, then the motor is started to drive the stirring rod to move, then the upper tooth sleeve is sleeved on the teeth of a patient, the teeth are occluded, and the occlusion of a user is trained through the compression pressure of the spring; then the food flows into the staple food pipe through the liquid outlet pipe by opening the adjusting valve, and then the food flows into the mouth of the patient through the liquid outlet by rotating the adjusting rod to drive the piston.

The utility model relates to the field of gasket production and processing technology discloses self -locking stainless steel gasket from locking type stainless steel gasket, including upper gasket and lower gasket, the similar side of upper gasket and lower gasket is provided with upper tooth, the surface of the other side of lower gasket is provided with lower tooth, the surface of one side of upper gasket is provided with antiskid groove and lug, the inner wall center of upper gasket and lower gasket all is provided with stainless steel matrix, and both sides of each stainless steel matrix all are provided with composite coating, the composite coating of lower gasket inner wall is opened has the sealing groove, and the inner wall of sealing groove is provided with sealing ring. In the utility model, through the cooperation between upper tooth and lower tooth parts, the core self -locking force is formed, and the frictional resistance between equipment and connecting piece and nut is increased, realizes double anti -looseness, can prevent bolt loosening, promotes the connection stability.

The invention relates to the technical field of oral treatment assistance, and particularly discloses an oral periodontal disease treatment assisting tool which comprises a supporting frame assembly, and the supporting frame assembly is provided with a moving assembly capable of being driven by a power source; the upper tooth supporting sleeve and the lower tooth supporting sleeve are rotationally connected with the supporting frame assembly, and the lower tooth supporting sleeve is driven by the moving assembly to rotate so as to achieve opening and closing of the oral cavity; the saliva suction tank comprises a saliva suction pipe; wherein the moving assembly and the saliva suction tank are arranged in a linkage mode so that negative pressure can be synchronously generated in the saliva suction tank in the process that the moving assembly drives the lower tooth supporting sleeve to conduct mouth opening movement, the lip supporting assembly is arranged, the lip supporting assembly can be conveniently driven through a second motor, the lips of a patient can be automatically lifted up and put down, the operation is convenient, and the working efficiency is improved. Manual operation of an assistant is not needed, meanwhile, the stability of lip traction is guaranteed, and a stable and clear operation visual field is provided for dentists.

In one implementation, method includes receiving, by a computing system, a digital representation of the patient's jaw movement, receiving a digital model of at least a portion of the patient's upper and lower teeth, receiving user input indicating selection of at least a first tooth in the digital model as moveable, at least a second tooth as fixed, and at least a third tooth as ignored, moving the at least portion of the upper teeth and the lower teeth along movement pathways indicated by the digital representation of jaw movement, and automatically adjusting a position of the selected first tooth based on detecting the position of the selected at least first tooth as colliding or interfering with one or more other teeth represented by the digital model along one of the movement pathways.

A mandible displacement adjusting device includes an upper braces and a lower braces, wherein the upper braces and the lower braces have an upper teeth accommodation space and a lower teeth accommodation space, the upper teeth accommodation space and the lower teeth accommodation space are made based on the tooth shape, and fits on the upper and lower dental arches of the human body respectively, and the side walls of the upper braces and lower braces extend out a first positioning part and a second positioning part corresponding to the upper molar area and the lower molar area. When the user wear the upper braces and the lower braces, the first positioning part and the second positioning part would be driven to fit together, and maintain a movable displacement space, so that when the mandible of the human body is moved forward and fixed, it will not cause the mandible of the human body due to tightening, neither cause the discomfort at the condyle, while avoiding the back of the tongue slumping down and blocking the breathing passage.

A mandible adjustment device comprises an upper teeth brace and a lower teeth brace wherein the upper teeth brace and the lower teeth brace have an upper teeth accommodation space and a lower teeth accommodation space, respectively: the upper teeth accommodation space and the lower teeth accommodation space are developed according to a user's dental pattern for matching a human being's maxillary dental arch and mandible dental arch, respectively; the upper teeth brace and the lower teeth brace laterally extend a mucosa protection device opposite to an upper molar area and a positioning part opposite to a lower molar area, respectively. The upper teeth brace and the lower teeth brace, both of which have been installed, drive the positioning part and the mucosa protection device to combine each other and keep a flexible displacement space for neither discomfort at a condyle of the mandible.

To provide a convenient dental device for patients who require the use of tongue position correction devices and other intraoral appliances. [Solution] The dental instrument 1 comprises an oral treatment device 10 that is detachably attached to the patient's upper teeth and is used to perform a predetermined procedure such as a retainer or night guard in the oral cavity, and a tongue position regulating device 50 which has a support 51 connected to the oral treatment device 10 and a contact body 52 that is supported by the support 51 and contacts the tongue body or tongue root of the patient's tongue T, and is used to regulate the tongue position, which is a procedure different from the predetermined procedure.

The application provides a novel robot base, which comprises a shell, a moving assembly, a supporting assembly and a driving assembly, the supporting assembly is provided with a supporting column, a tooth column part and a pressing part, the tooth column part comprises an upper tooth column, a lower tooth column and a stopper, the tooth groove shape formed by the combination of the upper tooth column and the stopper can be correspondingly engaged with the tooth groove shape of the lower tooth column, the upper tooth column and the lower tooth column can be relatively moved with the stopper, and the lower tooth column is elastically connected with the supporting column through a second spring; the upper tooth column pushes the lower tooth column to rotate and move, so that the stopper and the lower tooth column are engaged, and the stopper locks the lower tooth column. The moving assembly in contact with the ground is lifted by the supporting assembly, so that the moving assembly is separated from the ground, the robot is prevented from being stopped on a slope, the second motor needs to be locked or controlled for a long time to output a locked-rotor torque, and the service life of the second motor is shortened due to the pressure of the robot itself for a long time.

The invention relates to the technical field of tongue depressors, in particular to a head and neck tumor radiotherapy tongue depressor which comprises a lower clamping strip and a fixing mechanism installed on the lower clamping strip, a driving mechanism is installed on the fixing mechanism, a tongue depressing mechanism is installed on the inner side of the fixing mechanism, and two limiting mechanisms are oppositely installed between the fixing mechanism and the tongue depressing mechanism. A medical worker can make a clamping groove in a lower clamping strip abut against the lower teeth or gum of a patient, make a clamping groove in an upper clamping strip be aligned with the upper teeth of the patient, open a one-way valve and press an air bag repeatedly so that air can enter a driving piece, the air pushes a sliding rod to ascend, and the upper clamping strip abuts against the upper teeth of the patient; the ascending length of the sliding rod can be conveniently adjusted according to the comfort level of a patient, the oral cavity of the patient with the upper jaw and the lower jaw opened by different sizes can be expanded, and the comfort level during treatment is improved.