127 results about "Lower tooth" patented technology

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.

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 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 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 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.

This utility model discloses a medical tooth wax anti-sticking cutting device, relating to the technical field of tooth wax production equipment. Its specific structure includes: a base frame; a base plate mounted on the base frame; base frame rollers mounted on the bottom of the base frame; a guide rail assembly mounted on the base plate; a material tray assembly mounted on the guide rail assembly; a drive unit mounted on the base plate, with its output end connected to the material tray assembly; and a lifting and cutting assembly mounted on the base plate. The material tray assembly includes: a tray; multiple tooth wax limiting plates spaced apart on the tray, distributed along the length of the tray; and multiple anti-stick pads spaced apart on the tray, with any anti-stick pad located between any two adjacent tooth wax limiting plates. This utility model solves the technical problem of low tooth wax cutting efficiency in the prior art.

This invention discloses a continuous induction hardening device for sprockets, belonging to the field of hardening technology. It includes a hardening frame filled with coolant; a hardening section installed inside the hardening frame for induction heating of the sprocket; and a loading section installed at the bottom of the hardening frame for picking up and feeding the sprocket. In this device, the induction coil is curved to match the arc-shaped tooth profile of the sprocket. The upper and lower effective heating sections correspond to the upper and lower tooth roots, respectively. The heat source preferentially acts on the thicker part of the tooth root, ensuring sufficient heat input. Simultaneously, a rotary motor drives the sprocket to rotate. For sprockets with greater thickness, a side coil can be added to assist in heating the tooth sides, avoiding the problem of overheating in the main heating zone and insufficient heating of the side walls. This improves upon existing circular induction coils where the tooth tip heating rate is much faster than the tooth root during hardening, effectively reducing the risk of hardening cracks caused by the significant difference in heating rates and improving the quality of the finished sprocket.

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.

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.

We provide a toothbrush tool that allows for easy and effective cleaning of the backs of both upper and lower teeth. [Solution] A toothbrush body comprising a handle portion having an upper grip portion and a lower grip portion on its front and back surfaces at the rear, and a brush portion having multiple bundles of bristles, wherein the handle portion has an extended arm portion that bends upward at a right angle to the front tip portion and is in a vertical position, the arm portion has the brush portion at its tip portion, and the brush portion has multiple bundles of bristles on the surface portion on the handle portion side that face the handle portion and are parallel to the handle portion with bristle tips, characterized in that it is a toothbrush for cleaning the backs of the upper and lower teeth.

The invention provides a dental film positioner which comprises a positioning assembly, the positioning assembly comprises a lens ring, a fixed block, an n-shaped supporting plate, an L-shaped clamping plate, a movable block, two fixed rods, two protruding limiting blocks, two rotation limiting mechanisms, a clamping fixing plate and a second rod body, the fixed block is arranged on the upper surface of the lens ring, and the movable block is arranged on the lower surface of the lens ring. The fixing block and the lens ring are integrally formed, and an operation through groove is formed in one side of the fixing block; a dental film is fixed through an L-shaped clamping plate and a clamping fixing plate, the position of an n-shaped supporting plate is changed by rotating a movable block, and the position of the movable block is fixed through cooperation of a fixing rod, a protruding limiting block and a clamping groove; and then the positions of the L-shaped clamping plate and the clamping fixing plate are adjusted by operating the rotating limiting mechanism, so that the upper and lower teeth of the left and right oral cavities are conveniently shot, the positioner does not need to be replaced, the use cost is reduced, and the operation is relatively convenient.

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.

A manufacturing method of a horizontal rotary edge single chain scraper conveyor interval tooth wear-resistant sprocket, comprising the following steps: designing and calculating various important parameters of the sprocket; machining the sprocket body according to the obtained various important parameters of the sprocket; machining the movable lining plate; assembling and fixing the machined sprocket body and the movable lining plate through bolts; and finishing and heat treating the assembled sprocket assembly. The interval tooth wear-resistant sprocket manufactured by the method has a pitch at the sprocket chain nest which is 3 times the pitch of the round link chain, the interval tooth sprocket can be matched with the conventional round link chain, a variable pitch chain does not need to be designed separately, and the universality of the interval tooth sprocket is improved; the sprocket can provide a larger space to avoid interference with the guide scraper; the upper and lower tooth chain nests of the interval tooth sprocket and the upper surface of the lower tooth are subjected to local induction quenching treatment, and the movable lining plate is arranged on the upper surface of the lower tooth to enhance the wear resistance. The application also provides a horizontal rotary edge single chain scraper conveyor interval tooth wear-resistant sprocket.

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.

The utility model provides a children's bite block with induction lamp, including: the silica gel case, the top and bottom of silica gel case are both provided with the groove, the inside surface of two groove is provided with a plurality of rack. According to the children tooth cushion with the induction lamp, the silica gel sleeve, the pressing part, the light-transmitting part, the transparent frame, the illuminating lamp, the pressing block, the pressing switch and other structures are matched with one another, and when the children tooth cushion is used, the transparent frame sleeved with the silica gel sleeve is placed into the oral cavity of a child; the upper teeth and the lower teeth of the child are engaged in the inner side faces of grooves formed in the upper portion and the lower portion of the silicon rubber case, the pressing part is extruded, and therefore the pressing block extrudes the pressing switch, the illuminating lamp can be automatically turned on, and then light of the illuminating lamp penetrates through the transparent frame and the light-transmitting part to be irradiated into the oral cavity of the child; in this way, the interior of the oral cavity of the child can be illuminated, and medical staff can treat and nurse the oral cavity of the child conveniently.

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 invention relates to the technical field of medical apparatus and instruments, in particular to an anti-backflow sputum collecting device which comprises a collecting barrel, a barrel cover is connected to the top end wall of the collecting barrel through threads, and an air pump communicated with the collecting barrel is mounted on the outer wall of the top of the barrel cover. By means of the fixing mechanism, when sputum suction operation is conducted, a sputum suction pipe is inserted into the throat from the oral cavity of a patient, the patient holds a limiting plate on the pipe support, the limiting plate abuts against the interior of a vestibular sulcus between the lip and teeth, meanwhile, the lower teeth of the patient abut against the lower biting block, and sputum suction is conducted. The supporting frame abuts against the face of the patient, the shaking amplitude of the pipeline support can be reduced, and the situation that in the prior art, when the head of the patient moves or the hands of medical staff are not stable, the sputum suction pipe is likely to shake, and the sputum suction pipe cannot be fixed in the oral cavity of the patient is avoided. Therefore, the sputum suction operation cannot be carried out smoothly.

This product is a lip piece for nasal breathing during sleep. Traditionally, mouthpieces are worn between the upper and lower teeth inside the mouth, but this lip piece is placed between the upper and lower gums and lips, covering the entire lip, and has a slightly elongated ring shape. It utilizes the principle that even ordinary people can achieve nasal and diaphragmatic breathing by opening their mouths wide like singers. One piece can be fitted to set two sizes, slightly elongated vertically and slightly horizontally. This allows for adjustments to the size of the person's mouth and jaw closure, adjustment of the amount of air, and multi-purpose use such as daytime fitting practice or nighttime sleep use. The material is synthetic resin, and you can choose between a harder (plastic) and a softer (elastomer) version. When this product is worn on the lips, the larynx opens, ensuring an open airway during sleep, allowing for smooth nasal breathing, and preventing snoring and sleep apnea. Furthermore, since it prevents mouth breathing even when the mouth is open, it can prevent various problems associated with mouth breathing. It can be used by a wide range of ages, from infants with underdeveloped lower jaws who grind their teeth, to adults with teeth clenching, dry mouth, temporomandibular joint disorders, and elderly people at risk of aspiration, and is harmless. Once the discomfort of wearing it is overcome, it promotes restful sleep with light and safe nasal breathing. Other benefits include improved blood flow to the muscles around the mouth, while at the same time creating a slight tension in the lips, which is good for blood flow to the brain. The lips relax and the salivary glands work, so saliva is produced, but the structure prevents saliva from spilling out of the mouth. The base of the tongue is more easily moved forward, so the epiglottis (the lid for swallowing) moves. It is also expected to help prevent silent aspiration pneumonia.