20 results about "Lower incisor" patented technology

The utility model discloses a trachea cannula fixator for respiratory medicine, which belongs to the technical field of trachea cannula fixators and comprises a fixing plate and a socketed pipe positioned in the middle of the fixing plate, two tooth placing blocks are movably arranged on the fixing plate, and the bottom of the socketed pipe is flush with the bottom surfaces of the tooth placing blocks. The two tooth placing blocks are located on the two sides of the sleeving pipe, and the section of each tooth placing block is of a U-shaped structure; due to the fact that the tooth placing block is movably arranged on the fixing plate, when the trachea cannula needs to be fixed, the fixing plate is placed at the mouth of a patient, the trachea cannula is placed in the sleeving pipe, and upper and lower incisor teeth of the patient are placed in the tooth placing block, the oral cavity of the patient cannot be completely closed during treatment, the teeth cannot bite the trachea cannula, and the probability of danger is reduced.

The utility model relates to a rabbit head fixing device with an anti-suffocation function, which belongs to the technical field of rabbit head fixing in experimental operations, and comprises a mask, an upper block body arranged at the upper part and a lower block body arranged at the lower part, the upper block body is provided with an upper tooth socket used for sleeving the upper incisor of a rabbit, and the lower block body is provided with a lower tooth socket used for sleeving the lower incisor of the rabbit. The lower block body is provided with a lower pressing groove used for sleeving the lower incisor of the rabbit. The fixing band is connected to the mask and is used for detachably and fixedly connecting the mask to the test bed; the mask is provided with a through hole, the breather pipe is inserted and fixed in the through hole, and the breather pipe is used for being inserted into the mouth of a rabbit and communicated with the air pipe of the rabbit. By means of the structure, the rabbit head fixing device enables the head of a rabbit to be stably fixed to a test bed, stability and accuracy of an experiment are guaranteed, suffocation of the rabbit in the experiment process can be avoided, the rabbit head fixing device is easy and convenient to wear on the head of the rabbit, the operation can be completed by a single person, and damage to the rabbit due to the fixing mode of the rabbit head is smaller; and the rabbit feels more comfortable.

The invention discloses an appliance for adjusting a jaw position relation based on simulated tooth tips and a preparation method, and relates to the technical field of medical instruments. The appliance comprises a simulated tooth tip assembly fixed on a tooth occlusal surface, and the simulated tooth tip assembly comprises a plurality of simulated tooth tips arranged on teeth in a back tooth area. Each simulation tooth tip comprises a guide surface arranged in the front area of a simulation tooth tip body, a bearing surface arranged in the rear area of the simulation tooth tip body and a compensation surface matched with an occlusal surface, the guide surfaces guide jaw teeth, so that the upper jaw and the lower jaw tend to be a repeatable stable jaw position, the influence of the simulation tooth tips on a wearer in the wearing process is relatively small, and the simulation tooth tips are more stable. In addition, the simulation tooth tips are arranged in the rear tooth area, the mechanical effect of the simulation tooth tips cannot affect the inferior incisor teeth, and the risk of lip inclination of the lower anterior teeth is reduced.

This invention relates to a mandibular premolar guiding device for reducing labial inclination of the lower anterior teeth. The device includes an upper molar band, a lower molar band, a premolar guide, a push plate, and an implant. The upper and lower molar bands are fixed to the upper and lower molars, respectively. The premolar guide is located on the buccal side of the upper molar band, and the push plate is fixed on the buccal side of the lower molar band. The front end of the premolar guide bends downward to form a pusher portion. During occlusion, the pusher portion pushes against the push plate to achieve mandibular premolar guidance. The buccal side of the lower molar band also has a buccal tube. The lower incisor has a bracket. The buccal tube and the bracket are connected by a lower archwire. The lower archwire has a lower traction hook corresponding to the lower incisor. The implant is located between the lower molar and the lower premolar. The implant and the lower traction hook are connected by a traction member. This device can simultaneously achieve mandibular premolar guidance and reduce labial inclination of the lower anterior teeth.

The utility model relates to the technical field of medical instruments, and discloses a medical bite block for bite, which comprises an occluder body, and a protective sleeve is sleeved in the oral cavity of the occluder body; the tooth clamping groove is used for protecting the upper incisor and the lower incisor; the width of the tooth clamping groove can be adjusted; the tooth clamping groove comprises a front baffle plate, a rear baffle plate and a connecting part, and the connecting part is used for adjusting the distance between the front baffle plate and the rear baffle plate; the bottom of the front baffle is connected to the front end of the connecting part, and the bottom of the rear baffle is connected to the rear end of the connecting part; and the connecting part is connected to the outer surface of the protective sleeve. According to the medical bite block, damage to teeth and gingiva can be prevented, the width of the tooth clamping groove can be adjusted according to conditions of incisor teeth, up-down and front-back movement of the teeth on the medical bite block is limited, and the medical bite block is prevented from falling off from an oral cavity; the examination or treatment time is shortened, the gastroscopy or treatment effect is improved, the pain of a patient is relieved, and the safety is improved.

The utility model discloses a laboratory mouse mouth gag, which belongs to the technical field of animal medical experiment auxiliary instruments and comprises a V-shaped elastic piece, the V-shaped elastic piece comprises an elastic part and two connecting rods respectively positioned at two ends of the elastic part, and one ends of the two connecting rods far away from the elastic part are provided with an upper incisor fixer and a lower incisor fixer. The upper incisor fixer inwards rotates by 20-30 degrees by taking the axis of the connected connecting rod as the axial direction, and the lower incisor fixer inwards rotates by 20-30 degrees by taking the axis of the connected connecting rod as the axial direction. The upper and lower incisor connecting rods are connected with the length-adjustable sliding rod, and the length of the far end can be adjusted according to experiment requirements. According to the laboratory mouse mouth gag, an operator can operate the laboratory mouse mouth gag with one hand, the other hand of the operator can assist in fixing a laboratory mouse or conducting experimental operation, one person can complete the operation of opening the oral cavity of the mouse, and the laboratory mouse mouth gag is large in elasticity and can effectively prevent the oral cavity of an experimental part from being closed. An experiment oral cavity is always opened, so that an operator can conveniently carry out an experiment.

The present invention relates to the technical field of star soil excavation robots, and more specifically, to a mole-like biting star soil excavation robot. It comprises a head mechanism, a body mechanism, and a walking mechanism arranged on both sides of the body mechanism; the head mechanism comprises a head shell, an upper jaw, a lower jaw, a transmission turntable, an upper incisor connecting rod, a lower incisor connecting rod, and a driving mechanism, one end of the upper incisor connecting rod is hinged to the outer periphery of the transmission turntable; one end of the lower incisor connecting rod is hinged to the outer periphery of the transmission turntable; the output end of the driving mechanism is connected to the transmission turntable to drive the upper jaw and the lower jaw to rotate so that the upper incisors and the lower incisors bite and break the soil. By setting the head mechanism as a transmission turntable and a driving mechanism, the present invention can simultaneously control the movement of the upper incisors and the lower incisors with only one driving component, i.e., the driving mechanism, to achieve excavation of star soil, with a simple driving structure and a simple control method.

The invention relates to a main cutting edge of a forage grass chopping cutter with a bionic micro-nano structure, and belongs to the technical field of agricultural machinery. A cutting edge of a main body part of the cutting edge and a transverse appearance contour line of an auxiliary halfpace are obtained by bionic optimization of an inferior incisor tooth curve of a civetto in nature; and the cutting edge convex teeth and the cutting edge concave teeth which are built along the tooth direction according to a periodic curve between the auxiliary halfpace plane I and the lower surface of the cutting edge jointly form a functional cutting part. According to the cutting edge, through the synergistic effect of the curve halfpace structure and the periodic cutting part, the cutting resistance can be effectively reduced through the aggregation effect of the curve halfpace during operation, the cutting efficiency is improved, and the cutting stability of materials is guaranteed. Compared with a forage grass chopping cutter without an auxiliary cutting edge, the forage grass chopping cutter has the remarkable advantages of being small in cutting resistance, high in efficiency and more stable.

The utility model belongs to the technical field of trachea cannula fixers, particularly relates to a trachea cannula fixer, and aims to solve the problems that an existing trachea cannula fixing method is generally characterized in that a bite block is placed between upper and lower incisor teeth of a patient after successful cannula is determined, the trachea cannula and the bite block are bound and fixed side by side by adhesive tape, the fixing effect is poor without the trachea cannula, and the trachea cannula fixing effect is poor. In order to solve the problems in the prior art that the use requirements cannot be met, the following scheme is provided: the device comprises a fixing pipe, the fixing pipe is of a V-shaped structure, the front end of the fixing pipe is provided with an arc-shaped surface, the front end of the fixing pipe is provided with an intubation outlet, and the rear side of the fixing pipe is provided with an intubation inlet. The air pipe fixing device is simple in structure, an air pipe can be conveniently inserted into the fixing pipe, the air pipe can be fixed through the two clamping plates, air pipes of different sizes can be fixed, the angle of the clamping plates can be adjusted, the clamping plates have reset torsion through cooperation of the torsion springs, and the mobility of the air pipe is improved.

The utility model discloses a novel anaesthetic mask for rats, which relates to the technical field of animal anaesthetic masks and comprises an air inlet pipe, one end of the air inlet pipe is fixedly connected with a fixing ring, the outside of the fixing ring is fixedly connected with a communicating pipe, one end of the communicating pipe is fixedly connected with a ventilating balloon, and the other end of the communicating pipe is fixedly connected with an air outlet pipe. A plurality of ventilation holes are formed in the outer surface of the ventilation balloon, and the ventilation balloon is arranged in the oral cavity of the rat. When a rat needs to be anesthetized, firstly, the head of the rat penetrates through the sleeve opening and enters the soft mask, then the ventilation ball is arranged in the oral cavity of the rat, the lower incisor of the rat is clamped in the clamping opening formed in the middle of the fixing ring, and the soft mask and the rat are fixed through the effect of the binding belt. Then anesthetic gas can be introduced through the air inlet pipe and directly enters the oral cavity of the rat through the air inlet pipe, the fixing ring, the communicating pipe, the ventilating ball and the ventilating hole, and the problem that the anesthetic effect is affected due to anesthetic gas leakage is solved.

The invention belongs to the technical field of orthodontics, and discloses a tooth replacement stage occlusal position maintaining retainer which comprises a base plate arranged on the front portion of the hard palate. The upper jaw first molar occlusal pads are respectively arranged on two sides of the base plate, are respectively positioned on back tooth retreat positions on two sides of the upper jaw, and are connected with back teeth through retention devices; and an occlusal position maintaining part is formed in the upper and lower incisor regions, is connected with the base plate, and is matched with the upper jaw first molar occlusal pad to stabilize the lower jaw of the patient. The device is arranged on the upper jaw palate mucosa, the occlusal pad is formed on the occlusal surface covered by the first molar of the upper jaw, and the occlusal position maintaining part is formed in the upper and lower incisor regions, so that the effect of leading the lower jaw in the earlier stage can be stabilized, the replacement process of the deciduous molar in the premolar region is not influenced, and the transverse development of the upper and lower dental arches is not limited.

The utility model discloses a mouth gag for rat and rabbit experiments, which belongs to the technical field of mouth gags and comprises a mouth gag for opening and closing operation, a sleeve for sleeving upper and lower front teeth of rats and rabbits and a locking mechanism for limiting and locking the mouth gag, the mouth gag comprises a left mouth gag and a right mouth gag, according to the device, when opening supporting operation needs to be carried out on a mouse and a rabbit in the experiment process, the two sleeves are directly arranged on upper and lower front teeth of the mouse and the rabbit in a sleeving mode, then the tail ends of the left opening piece and the right opening piece are forcibly closed inwards, and the left opening piece and the right opening piece are locked through the locking mechanism. The left opening piece and the right opening piece are opened, so that the mouse and rabbit type opening is conveniently opened, the tail ends of the left opening piece and the right opening piece can be locked through the locking mechanism after the mouse and rabbit type opening is opened, the mouth is always in a supported opening state after the mouth is opened, and the follow-up operation of workers is facilitated.

The utility model belongs to the field of radiotherapy buccal devices, and particularly relates to a medical tumor radiotherapy buccal device. The device comprises two supporting tables which are symmetrically arranged up and down at intervals, a plurality of telescopic rods are fixed between the two supporting tables, mounting grooves are formed in the sides, away from each other, of the two supporting tables, tooth sockets are detachably mounted in the mounting grooves, and positioning grooves are formed in the side walls, facing upper and lower front teeth, of the two tooth sockets correspondingly; a supporting plate is vertically fixed to one supporting table, a mounting opening is formed in the side wall, facing the interior of the oral cavity, of the supporting plate, a pressing plate is horizontally fixed to the mounting opening, the pressing plate is sleeved with an air bag, and the opening end of the air bag is detachably fixed to the mounting opening. The side, away from the oral cavity, of the supporting plate is connected with an air pipe used for being connected with an external air injection device and transmitting air to the air bag, the supporting plate is provided with a through hole communicating with the mounting opening and the air pipe, and the air pipe is provided with a blocking assembly. The fixing effect is good, damage to the inner wall of the oral cavity is avoided, and different patients can be adapted.

The utility model provides an anti-molar tooth socket which comprises a first limiting part for limiting incisor teeth and second limiting parts which are respectively connected to two ends of the first limiting part and are used for preventing molar teeth in a posterior molar region, the first limiting part comprises a fixing block, a first clamping groove located in the upper side of the fixing block and used for being connected with upper incisor teeth, and a second clamping groove located in the lower side of the fixing block and used for being connected with lower incisor teeth. According to the molar prevention tooth socket, the rear molar area is connected to the second limiting part, the upper incisor is connected into the first clamping groove, and the lower incisor is connected into the second clamping groove, so that when teeth are ground at night, the upper incisor is limited by the first clamping groove, and the lower incisor is limited by the second clamping groove; therefore, the movement amplitude of the posterior molar region when the second limiting part is rubbed can be reduced, and the tooth socket has a better anti-molar effect on the teeth.

The invention relates to the technical field of manufacturing of oral stents for radiotherapy, and particularly discloses a method for manufacturing an oral stent for radiotherapy based on three-dimensional image data of a tongue cancer patient and a 3D printing technology, and the method comprises the steps: manufacturing a non-individualized open stent through the 3D printing technology; selecting a non-individualized opening stent with a corresponding size, placing the non-individualized opening stent between upper and lower incisors and canine teeth of the patient, and obtaining an opening state CT image of the patient; simulating a three-dimensional model of the individualized opening support according to the CT image of the opening state of the patient, and manufacturing the individualized opening support of the patient through a 3D printing technology; the method comprises the following steps: enabling a patient to wear an individualized opening bracket, obtaining a thin-layer image, sketching an irregular tongue depressor and a tongue surrounding gap filling model which are attached to the upper surface of a tongue in a coronal plane, a lost plane and a cross section of the thin-layer image, and converting the tongue depressor and the tongue surrounding gap filling model into a first three-dimensional model; and merging the individualized open stent three-dimensional model and the first three-dimensional model to obtain a merged model, and performing 3D printing to obtain the individualized oral stent.

The auxiliary guide plate assembly comprises a drilling guide plate, an osteotomy guide plate and a positioning guide plate, the top of the drilling guide plate is matched with the neck of a lower anterior tooth, the bottom of the drilling guide plate is matched with the lower edge of a mandible, and a fixing hole is formed in the drilling guide plate; the osteotomy guide plate is in an isosceles trapezoid shape, and the bottom edge of the osteotomy guide plate is matched with the lower edge of the mandible. The positioning guide plate is in a step shape and comprises an upper fixing part, a middle connecting part and a lower fixing part, and the two ends of the middle connecting part are connected with the upper fixing part and the lower fixing part respectively. Compared with the prior art, the utility model has the advantages that: the utility model is improved in a way that the lower incisor neck and the lower jawbone lower edge are taken as upper and lower edge fixed points, the drilling guide plate is prepared, the drilling position is firstly positioned, and then the osteotomy guide plate is fixed by two holes in the lower row to form the osteotomy island fixed on the lower jawbone surface instead of an osteotomy bridge in the prior art, so that the pendulum saw operation is convenient; and displacement is not easy to occur. The guide plate is shortened, so that the guide plate can be conveniently placed, and chin nerve injury is avoided.

The utility model discloses a bite block device which comprises a bite block and an outer fixing piece, the bite block comprises a bite block body and a plurality of inner fixing wings, the inner fixing wings extend from the outer surface of the bite block body, and molar fixing grooves matched with upper molar teeth and / or lower molar teeth are formed between the inner fixing wings and the bite block body; one end of the outer fixing piece is connected with the bite block body, and the other end of the outer fixing piece is provided with a mouth corner fixing part. According to the bite block device, the bite block body can be placed between the molars, the bite block body is further fixed between the molars through the inner fixing wings, the bite block is stably positioned at the corner of the mouth through the outer fixing piece, and therefore the space of the incisor is not occupied, and meanwhile the upper incisor and the lower incisor are reliably prevented from being closed.

The invention provides a device for fixing the head of a laboratory mouse and exposing the oral cavity of the laboratory mouse, relates to the technical field of special appliances for the laboratory mouse, and solves the limitation problems that an existing device is poor in adaptability, insufficient in exposure and easy to slip, needs extra manpower and the like. When a mouse lies on the operation bottom plate of the device, the upper tooth drag hook hooks the upper jaw incisor of the mouse, the cheek drag hook hooks the left cheek and the right cheek of the mouse, and the lower tooth drag hook hooks the lower jaw incisor of the mouse, so that the head of the mouse is fixed, and the oral cavity of the mouse is exposed; the sides, far away from the head of the mouse, of the upper tooth drag hook and the cheek drag hook are correspondingly and detachably connected to the bottom plate fixing piece in the corresponding direction on the operation bottom plate; one side, far away from the head of the mouse, of the lower tooth drag hook passes through the upper part of the body of the mouse and then is detachably connected to the bottom plate fixing piece in the corresponding direction on the operation bottom plate. According to the invention, only one experimenter is needed to stably fix the head of the mouse and expose the oral cavity, and no assistant is needed in the subsequent experiment process.

The utility model provides a double-jaw dental arch linkage appliance. The appliance comprises a maxillary tooth correction assembly and a mandibular tooth correction assembly, the maxillary tooth correction assembly comprises an expander and two groups of upper molar fixing parts symmetrically arranged on two sides of the expander, and a first traction hook is arranged on the tongue side of an upper molar band on the outermost side, far away from upper incisors, of each group of upper molar fixing parts; a first buccal tube with a ring is arranged on the buccal side; the mandibular tooth correction assembly comprises two groups of symmetrically arranged lower molar fixing pieces and a mandibular tooth arch wire connected between the two groups of lower molar fixing pieces, and a second band buccal tube is arranged on the cheek side of the outermost lower molar band, far away from the lower incisors, of each group of lower molar fixing pieces; and two boot-shaped curves are symmetrically bent on the cheek side of the mandibular dental arch wire corresponding to the positions of mandibular canine teeth. According to the orthodontic device, the upper jaw dental arch can move forwards, the lower jaw dental arch can move backwards, the jaw position can be adjusted, the original mesial dislocation molar relation is adjusted to the neutral, remote and middle molar relation, and the orthodontic device is used for orthodontic treatment aiming at osseous reverse inhale.

The utility model discloses a jaw position guide calibration ruler which comprises a jaw position guide calibration ruler body, the jaw position guide calibration ruler body is of a sheet-shaped structure extending in the length direction, and an upper incisor tooth contact face suitable for being in contact with upper jaw incisor teeth is formed on the upper surface of the jaw position guide calibration ruler body. A lower incisor tooth contact surface suitable for being in contact with lower incisor teeth is formed on the lower surface of the jaw position guide calibration ruler body, a plurality of upper incisor tooth positioning protrusions are arranged on the upper incisor tooth contact surface at intervals in the length direction, and a plurality of lower incisor tooth positioning protrusions are arranged on the lower incisor tooth contact surface at intervals in the length direction; the upper incisor tooth positioning protrusion and the lower incisor tooth positioning protrusion are symmetrically arranged relative to the central axis, extending in the length direction, of the jaw position guide calibration ruler body. Operation can be simplified, different patients can be adapted, and comfort of the patients is improved.