7 results about "Lower incisor" patented technology

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 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 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 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.