332 results about "Lower tooth" patented technology

The invention relates to the technical field of special-shaped steel pipe machining, in particular to a special-shaped steel pipe welding device which comprises a welding module fixedly installed on a bottom plate, the welding module comprises a fixing frame and a power box which are fixedly installed on the bottom plate, and a second electric push rod is installed at the top of the fixing frame and fixedly connected with the top of an upper cover through a hanging rod. A rotatable upper tooth part is installed in the upper cover, a lower cover matched with the upper cover is installed on the power box, a rotatable lower tooth part with the same structure as the upper tooth part is installed on the lower cover, electromagnets used for locking the corresponding upper tooth part and the lower tooth part are installed on the upper cover and the lower cover correspondingly, and a linear moving pair is installed on the upper tooth part through a connecting block. An extension plate is installed on a sliding block of the linear moving pair, a welding machine is installed at the end, away from the sliding block, of the extension plate through an electric rotary table, and a driving motor for driving the upper tooth part and the lower tooth part is installed in the power box. The device is high in automation degree and can adapt to special-shaped steel pipes with various sections.

The invention relates to the technical field of gear machining, in particular to a chamfering mechanism for precision gear machining, which comprises a floating unit, a chamfering unit and an adjusting unit, the floating unit is fixedly mounted through a fixing support, the chamfering unit is fixedly arranged on the surface of the floating unit, and the adjusting unit is fixedly arranged on the surface of the floating unit. Through the two chamfering tool bits which are oppositely arranged up and down, synchronous chamfering machining can be conducted on the upper tooth edge and the lower tooth edge of the gear, the chamfering efficiency of the single gear is improved, meanwhile, the axis of each chamfering tool bit is parallel to the axis of the gear, and it can be guaranteed that the tooth edge angle of the gear is always consistent; the angle of the upper path guide rail and the angle of the lower path guide rail are set through the adjusting unit, so that the gear chamfering mechanism can be used for chamfering straight-tooth gears and different sharp-tooth gears, the overall use range is wide, and functionality is high.

The invention discloses a bite block for tracheal intubation, and belongs to the technical field of medical instruments. The overall shape of the bottom plate is of an oval structure, and a through groove is formed in the middle of the bottom plate. A bite block support capable of supporting the upper teeth and the lower teeth of the patient is inserted into the through groove; one side of the bottom plate is provided with a clamping groove for placing an air pipe insertion pipe; a clamping groove is formed in the bottom plate, a trachea cannula fixator capable of fixing the placed trachea cannula is arranged at the position of the clamping groove in the bottom plate, and the clamping groove in the bottom plate extends to the outer side area of the bottom plate, so that two protruding parts are formed on the side, provided with the clamping groove, of the bottom plate. The two top plates can be expanded and adjusted through cooperation of the adjusting pipe, the clamping ring, the guide groove and the guide rod, the supporting amplitude in the mouth of a patient can be adjusted, the problems encountered in real medical care can be solved, in the operation process, a series of operation adjustment of lifting of the top plates can be achieved only by repeatedly rotating the adjusting pipe, and the operation efficiency is improved. The operation is simple, and the tendon tissue around the jaw bone of the patient can be moved anytime and anywhere so that the patient can feel uncomfortable due to a fixed posture for a long time.

The utility model provides a bite block device for nerve electrophysiology monitoring in an operation, which comprises a lower bite block and an upper bite block, a channel groove for installing a trachea channel is arranged in the lower bite block, and lining plates are oppositely arranged on two sides of the channel groove in the lower bite block; the lower surface of the lower bite block is provided with a lower tooth groove, and the upper surface of the upper bite block is provided with an upper tooth groove. Through the arrangement of the base plate, the upper tooth cushion and the lower tooth cushion can be in full contact with molar teeth in the cavity, so that the pressure borne by incisor teeth is reduced, and the incisor teeth of a patient are prevented from being damaged; the trachea channel is arranged in the middle of the bite block, the inner lining plate is arranged on the outer side of the trachea channel, under protection of the inner lining plate, the trachea can be prevented from being bitten by a patient to be flat, normal use of the trachea is guaranteed, the trachea channel has a certain length and is arranged in the middle of the bite block, and after the whole bite block is arranged in the oral cavity of the patient, the inner trachea channel can press the tongue. The tongue is prevented from entering the space between the upper teeth and the lower teeth and is prevented from being bitten.

The disclosed technology provides for setting up teeth, such as dentures and dental appliances, based on motion data. A method can include 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.

The invention relates to an artificial intelligence technology-based digital form false tooth restoration generation method, which comprises the following steps of: performing 3D scanning on the oral cavity of a patient to obtain a three-dimensional digital impression of upper and lower jaw teeth, appointing the position of a preparation body, performing local cutting by taking the preparation body as a center, and obtaining a three-dimensional digital impression of the upper and lower jaw teeth; the cut area comprises a preparation body, adjacent teeth and three-dimensional impression information of jaw teeth; inputting the cut impression information into a deep neural network model to generate a restoration digital form matched with the preparation body; in the model training process, impression information of a cut part is used as model input, and a three-dimensional digital form of a repaired false tooth prosthesis is used as a learning target; and measuring the difference between the output of the network model and impression information by defining an energy function. Compared with the prior art, the method has the advantages that the digital denture prosthesis with highly accurate model natural tooth morphological characteristics can be designed and produced, and the efficiency and the accuracy are improved.

A mouthpiece toothbrush that includes a carrier, one or more brushes, and an actuator. The carrier is configured to be secured between upper teeth and lower teeth of a user. The one or more brushes are movably coupled to the carrier such that the one or more brushes contact the upper teeth, the lower teeth, or both. The actuator is configured to move the one or more brushes with respect to the carrier such that the one or more brushes move along the upper teeth, the lower teeth, or both.

The invention discloses a vaginal dilator with a light source, which relates to the technical field of medical instruments and is characterized by comprising a dilation structure, a light source system, an adjusting structure and a handle. The expansion structure is formed by hinging upper and lower tooth parts, and the surface of the expansion structure is coated with a silica gel layer to ensure comfort and biocompatibility; an observation window is arranged at the front end of the upper tooth part; a light guide column is integrated in the lower tooth part. The light source system comprises an LED module and a turning structure, uniform floodlight source distribution and accurate point light source illumination are achieved through microprism texture processing and light guide fibers, and the irradiation angle can be adjusted to meet different inspection requirements. And the adjusting structure comprises a fine adjustment knob and an angle adjusting knob, so that accurate control of the expansion angle and flexible adjustment of the light source angle can be realized. The problems that in the prior art, the light source angle cannot be adjusted, and the dilation angle is not finely adjusted are solved, the examination accuracy and the comfort of a patient are improved, and the device is suitable for gynecological examination and conventional treatment.

The invention provides an adjustable snore preventing device and a manufacturing method thereof, and relates to the technical field of snore preventing devices, the adjustable snore preventing device comprises an upper jaw base and a lower jaw base, the upper jaw base and the lower jaw base can be arranged on the outer sides of upper teeth and lower teeth in a sleeving mode respectively, and a lower jaw limiting plate is arranged at the front end of the lower jaw base; the front end of the upper jaw base is connected with a first upper jaw limiting plate through a first adjusting mechanism, the first upper jaw limiting plate is used for being matched with the lower jaw limiting plate in a limiting mode, the rear end of the upper jaw base is connected with a second upper jaw limiting plate through a second adjusting mechanism, and the second upper jaw limiting plate is used for making contact with the rear end of the lower jaw base. The first adjusting mechanism and the second adjusting mechanism can adjust the first upper jaw limiting plate front and back and adjust the second upper jaw limiting plate up and down respectively; the snore-preventing device solves the problems that in the prior art, a snore-preventing device cannot be adjusted, the application range is limited, and individual differences of wearers are difficult to deal with.

A computer-implemented method involving obtaining digital representations of a patient's teeth through facial imaging and intraoral scanning. The first segmentation involves obtaining digital representations of teeth from facial images and storing them as a first digital file. The second segmentation involves obtaining digital representations of upper and / or lower teeth from intraoral scans and storing them as a second digital file. These files are aligned and overlaid to create an overlay image that can be modified by a user. The modification is applied to the overlay image while maintaining the coordinates of the modified tooth in both the first and second digital files. This method allows for more efficient and accurate digital representation of a patient's teeth, which can be used for various dental procedures.

The utility model provides a simple column type jaw movement jaw frame which comprises an upper jaw support used for being connected with an upper tooth jaw model, an upper supporting column is arranged on the upper jaw support, and the upper supporting column extends by a preset length in the vertical direction; the lower jaw support is used for being connected with a lower tooth jaw model, a lower supporting column is arranged on the lower jaw support, and the lower supporting column extends by a preset length in the vertical direction; the end, away from the upper jaw support, of the upper supporting column and the end, away from the lower jaw support, of the lower supporting column are provided with separable butt joint structures. The separable butt joint structure comprises an inclined convex face and an inclined concave face which are matched with each other, and the inclined convex face can slide along the inclined concave face. The problem that in the prior art, when an upper tooth jaw model and a lower tooth jaw model conduct jaw movement, an upper column type structure support and a lower column type structure support interfere with each other, and consequently use is inconvenient is solved.

The present invention relates to a cutter head for an intimate trimmer, comprising a pair of cooperating cutter blades each having at least one row of comb-like cutting teeth for long hair cutting, said cutter blades including a lower cutter blade and an upper cutter blade which is closer to a skin contact surface than said lower cutter blade and is movable in a cutting direction along a cutting surface defined between said cooperating cutter blades. The cutting teeth of the upper, movable cutter blade have tooth tips with obtuse tooth tip angles of more than 100° or more than 110° defined between a lower tooth side facing said cutting surface and a lower front side portion extending from said lower tooth side to a forward end point defining a maximum longitudinal tooth extension.

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 utility model relates to the technical field of medical auxiliary instruments, in particular to an oral cavity mouth gag capable of being provided with a tongue depressor. The tongue depressor mounting seat comprises a connecting seat and a fixing steel plate, the connecting seat is fixed on the connecting shaft of the mouth gag body, one end of the fixing steel plate is fixed on the connecting seat, the other end of the fixing steel plate extends to the opening and closing end of the corresponding mouth gag body, an inserting groove is formed in the lower surface of the fixing steel plate, and the inserting groove extends in the extending direction of the fixing steel plate; the slot forms a notch at the end part of the fixed steel plate; and the tail part of the tongue depressor is inserted into the slot. The opening and closing ends of the mouth gag are respectively supported between the upper teeth and the lower teeth of the oral cavity to open the oral cavity, and the bent tongue depressor extends into the oral cavity to press the tongue, so that a doctor does not need to operate the mouth gag with one hand and use the independent tongue depressor with the other hand, and the workload of the doctor is effectively reduced; compared with manual fixation, the tongue depressor is more stable after being fixed.

The utility model relates to the field of respiratory trainers, and particularly discloses a mouthpiece for a respiratory trainers, which comprises a connecting pipe, the right side of the connecting pipe is provided with a mouthpiece, and the front side and the rear side of the outer wall of the mouthpiece are both provided with limiting grooves. The front side and the rear side of the outer wall of the mouthpiece are each fixedly connected with two bosses located on the left side and the right side of the limiting groove, the four bosses on the left-right opposite sides of every two bosses are each provided with a plurality of grooves, the extension pipe is connected into the connecting pipe in a threaded mode, the extension pipe is located in the blocking groove, and meanwhile the extension pipe abuts against the baffle ring. Then, the mouthpiece is placed in the mouth, the upper teeth and the lower teeth are made to bite in the limiting grooves respectively, meanwhile, the two sets of bosses are located on the inner side and the outer side of the upper gum and the lower gum, then the gum parts of a user can be limited, and the effect of stable bite of the mouthpiece is achieved.

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 present invention relates to a cutter head for a private part trimmer, the cutter head comprising a pair of cooperating cutter blades, each cutter blade having at least one row of comb-shaped cutting teeth for long hair cutting, the cutter blades comprising a lower cutter blade and an upper cutter blade, the upper cutter blade is closer to the skin contact surface than the lower cutter blade and is movable in a cutting direction along a cutting surface defined between the mating cutter blades. The cutting teeth of the movable upper cutter blade have a tooth tip having a cog angle greater than 100 degrees or greater than 110 degrees defined between a lower tooth side facing the cutting surface and a lower front side portion extending from the lower tooth side to a front end point defining a maximum longitudinal tooth extension.

The utility model relates to the technical field of watch production, in particular to a lower tooth mold which comprises a bottom plate, a switch fixedly connected to the side wall of the bottom plate, square iron fixedly connected to the top of the bottom plate, a plate B fixedly connected to the top of the square iron, a plate A lapped to the top of the plate B, and a hot runner mold plate fixedly connected to the top of the plate A. The top of the hot runner mold plate is fixedly connected with a panel, the inner side wall of the plate B is fixedly connected with a rear mold core, the inner side wall of the plate A is fixedly connected with a front mold core, the rear mold core is matched with the front mold core, mounting holes are symmetrically formed in the top of the rear mold core in a penetrating mode, and the inner side walls of the mounting holes are rotationally connected with driving assemblies. According to the watch tooth forming mold, the concentricity of the front mold core and the rear mold core can be ensured when the front mold core and the rear mold core are clamped through the arranged limiting assembly, so that the precision degree of watch tooth manufacturing is ensured, produced tooth finished products can be rapidly ejected out from the interior of the rear mold core through the arranged driving assembly, and the production efficiency is improved. And therefore, the processing efficiency during product production is improved.

The utility model discloses a full -wrap formula toothpaste, including backing layer, the upper toothpaste is connected with in the upper part of one side middle part of backing layer, the lower toothpaste is provided with below upper toothpaste, upper toothpaste and lower tooth paste outside all are provided with a plurality of extension pastes, upper toothpaste, lower toothpaste and one side of extension pastes all are provided with plastic film layer, one side of plastic film layer is provided with elastic gel layer, is provided with the adhesive on plastic film layer. Advantageous effects lie in: the utility model discloses through setting extension pastes, adhesive and protection pastes, can make protection pastes connect with plastic film layer through adhesive, and when the user connects upper toothpaste, lower toothpaste and extension pastes, the user separates protection pastes, then makes upper toothpaste, lower toothpaste and extension pastes interconnect through adhesive, can all be wrapped to user's teeth, and then carries out the whitening protection to the teeth, and the convenient use improves practicality.

The utility model belongs to the technical field of trachea cannula nursing, and particularly relates to an oral trachea cannula fixing device convenient for oral nursing. According to the technology, a horizontally-arranged fixing pipe is included, the outer side of the fixing pipe is sleeved with a freely-rotating vertical plate, the vertical plate is of an oval structure, tooth pads are arranged on the upper side and the lower side of the fixing pipe and fixed to the left side wall of the vertical plate, and fixing assemblies for fixing the fixing pipe in the mouth of a patient are arranged at the front end and the rear end of the vertical plate. The trachea cannula is fixed in the fixing tube, the trachea cannula is protected through the fixing tube, upper and lower teeth of a patient are manufactured through the two tooth pads, the vertical plate is fixed to the outer side of the oral cavity of the patient under the action of the fixing assembly, the vertical plate is rotated by 90 degrees, and the front end and the rear end of the long radius of the vertical plate are rotated to the horizontal state to abut against the upper and lower teeth of the patient. The upper end and the lower end of the short radius are rotated to a vertical state to expose the oral cavity of the patient, so that a doctor can conveniently nurse the oral cavity of the patient.

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 invention relates to the technical field of medical instruments, in particular to a multi-channel oropharyngeal ventilation device for the anesthesiology department, the multi-channel oropharyngeal ventilation device for the anesthesiology department comprises a ventilation pipe, a functional pipe and a mounting plate, two through holes are symmetrically formed in the side face of the mounting plate, and the ventilation pipe and the functional pipe are arranged in parallel and movably connected to the inner walls of the through holes of the mounting plate respectively; the device further comprises a guide plate fixedly connected to the middle of the mounting plate, occlusion blocks are symmetrically connected to the two sides of the guide plate in a sliding mode, the occlusion blocks are used for being occluded and limited between the upper teeth and the lower teeth of a patient, and the ends, facing ventilation, of the occlusion blocks are arc-shaped end faces. Through the vent pipe and the functional pipe which are arranged in parallel, ventilation support and clinical drainage, dosing and other operations in an anesthesia state are achieved respectively, repeated intubation is avoided, the locking assembly is matched to automatically lock the vent pipe and the functional pipe at the target depth after the device is in place, a catheter is effectively prevented from sliding or dislocation in an operation, and the operation efficiency is improved. And the accuracy and the safety of medical operation are ensured.

The utility model aims at providing a metal pile nail removing device, and relates to the technical field of medical instruments, by adjusting inner rods at the two ends of a supporting column of an opening assembly, supporting plates abut against the upper teeth and the lower teeth of a patient, the oral cavity of the patient is opened, and metal pile nails are convenient to remove. A control panel is pressed downwards to rotate to drive a gear to rotate, a rack is controlled to slide back and forth in a clamp body, a clamping plate is driven to slide in the radial direction of a nail taking head, the two sides of an L-shaped clamping block make contact with the surface of a metal pile nail, rotation of the control panel is limited by limiting stretching of an arc-shaped telescopic plate, locking is achieved, and the situation that due to hand looseness, the metal pile nail falls off is avoided; the suction pump and the collection box are arranged in the pincer body, the liquid suction pipe is arranged on the inner wall of the nail taking head and communicated with the suction pump, body fluid on a metal pile nail is sucked into the collection box through the liquid suction pipe, and the problem of slipping caused by the influence of the body fluid when the metal pile nail is clamped is effectively solved.

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 provides a mandibular retraction appliance traction device, which comprises an appliance main body fixed on an upper jaw and four groups of orthodontic bands, the four groups of orthodontic bands are respectively fixed on an upper molar and a lower molar which are symmetrically arranged, the orthodontic bands and the appliance main body are provided with mounting sleeves, and the mounting sleeves are sleeved on the orthodontic bands and the appliance main body. Detachable traction hooks are arranged on the mounting sleeve, the opening directions of the traction hooks arranged on the orthodontic belt ring and the traction hooks arranged on the appliance main body are opposite, elastic rings are arranged on two sides of the appliance main body, and the elastic rings are arranged on three groups of traction hooks in a sleeving manner. According to the device, the elastic ring is matched with the traction hook, so that the upper and lower teeth of a child patient are actively occluded, and the lower jaw of the child patient can be positioned at a protraction position, thereby effectively avoiding the situation that the child patient cannot actively occlude in a sleep state, and leading the lower jaw forwards, so that the tooth correction effect is improved.

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.

An orthodontic aligner includes an aligner body configured for receiving upper teeth or lower teeth. The aligner body has a facial surface, a lingual surface, a gingival edge, and an incisal edge. A hook is integrally formed on either the facial surface or the lingual surface of the aligner body. The hook is configured so that an elastic band can be removably attached thereto. The hook is positioned between the gingival edge and the incisal edge of the aligner body. The hook protrudes at an angle relative to the surface of the aligner body. The angle may be between 20 and 60 degrees. The aligner body and the hook are formed simultaneously during manufacturing.