96 results about "Canine tooth" patented technology

Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.

For use with a head-worn computer, such as Google's Glass device, a user-generated tooth-tapping based input is used to control various and select computer operations during its use. The user simply opens and closes their jaw slightly so that they tap their right side pair of canine teeth, their left side pair of canine teeth, or all their teeth together to generate a sound and a vibration. This sound and vibration generated by a single tooth tap or any combination thereof is detected by at least one microphone located on the head-worn computer, and according to other embodiments of this invention two or more microphones and / or vibration-detection sensors. The computer receives the tapping sound signals from the microphone and uses controlling circuitry and / an algorithm to determine the exact tap-sequence and time between taps to establish a “command signature”, specific to each particular tap-sequence. From this, the computer compares the command signature with a corresponding command or action stored in the onboard memory and then performs that command or action, as required. The user can effectively and discretely control many operations of the head-worn computer merely through tooth tapping.

A fish allogenous frozen-sperm induced gynogenesis method comprises a frozen storage method of the allogenous fish sperm, a genetic inactivation method, an induced method for the gynogenesis diploid fry and an identification method for the gynogenesis fry. The present invention establishes the method adopting the frozen-sperm of the sea bass to induce the egg gynogenesis of a plurality of sea fishes for the first time, which selects the cold-shock starting time, cold-shock temperature and the cold-shock durance time that are separately suitable for fish eggs of the strip-spotted flounder, the turbot and the canine-tooth paralichthys olivaceus to establish a micro-satellite marking identification method of the gynogenesis fry. The percentage rate adopting the present invention to acquire the gynogenesis fry of the strip-spotted flounder, the turbot and the canine-tooth paralichthys olivaceus is 7.8 percentages to 40.7 percentages, 26 percentages to 34 percentages and 10 percentages to 25 percentages respectively. The established method of the present invention is characterized in advancing, high efficiency, accuracy and reliability, which has an important application value in fish gender controlling and the production of the all-female fries and has a broad popularization and application prospect on fish cultivation and fish breeding.

The invention provides a technique for quenching along the tooth space of a large tooth ring with hardened tooth surfaces on a medium-frequency basis, particularly for quenching and tempering the tooth surfaces along the tooth space on a medium-frequency induction basis. The technique comprises the following steps: 1), carrying out the tool preparation and on-site installation before quenching and tempering; 2), manufacturing medium-frequency copying inductors heating-quenching along the tooth space and taking the shape similar to the profile of the tooth space, and quenching and back-cooling the tooth surfaces in a synchronous manner; 3), quenching at intervals of 3 tooth spaces, wherein, one round of the rotation of the parts, that is, 54 teeth, constitutes a working cycle; 4) testing the hardness of a first quenching tooth surface every cycle; and 5), carrying out the tempering heat treatment in a half-tooth ring manner after the surface is quenched. The quenching level of the tooth surfaces of the large tooth ring with the hardened tooth surfaces reaches HRC40-45; the depth of effective hardening layers is larger than or equal to 4mm; the accuracy of the tooth wheel reaches the 988GE level; the tooth ring has the advantages of light and handy structure, large size and service life as long as two times of the ordinary tooth ring with the same specification; and the technique remarkably reduces the weight of the equipment, improves the reliability thereof, and improves the running efficiency thereof.

An multipurpose mouthpiece assembly is disclosed for use in diagnosing and treating a variety of termporomandibular disorders. The assembly can include both a maxillary appliance and a mandibular appliance that are optionally configurable to function as a discluder, for diagnosing and treating wearers suffering from bruxism, tension headaches, and common migraine headaches, by preventing contact between opposing canine and posterior teeth and thereby reducing the intensity of clenching of the wearer's temporalis muscles. Alternatively, the two appliances are optionally configurable for use as a mandibular advancement device, for diagnosing and treating wearers suffering from obstructive sleep apnea by preventing excessive retrusion of the wearer's mandible. Alternatively, either the maxillary appliance or the mandibular appliance can be used individually to protect the teeth from nocturnal asymptomatic teeth grinding. In all cases, the appliance(s) can be readily adjusted to accommodate wearers whose maxillary and mandibular arches have a variety of sizes and shapes.

An intraoral discluder for preventing chronic tension headaches, common migraine headaches, and temporomandibular disorders that are caused or perpetuated by chronic activity of the temporalis muscle. The discluder includes a trough, contoured to encompass at least one maxillary or mandibular incisor, from which extends a protruding platform, for engagement by the opposing incisors. The trough can be retained on the teeth by any adaptable material than can flow around the teeth and then maintain its shape. Once in place in the wearer's mouth, one or two opposing incisors will come into contact with the platform prior to the upper and lower posterior and / or canine teeth coming into contact, regardless of the position of the mandible, thereby reducing the intensity of the activity of the temporalis muscle. In addition, a special post on the discluder's platform is engageable directly with one or more opposing incisors, to act as a stop and thereby inhibit excessive retrusive movement of the mandible and urge the mandible toward a more protrusive position. This can reduce the intensity of undesired clenching, and it can enhance the size of the wearer's pharyngeal airspace, thereby reducing the incidence and severity of snoring.

The invention provides a novel oral cavity orthodontic appliance, wherein the appliance comprises a tooth socket body, and a orthodontic bench is arranged on the tooth socket. The orthodontic bench is arranged on a lingual side of incisors or a lingual sides of incisors and canine teeth of the tooth socket body, and comprises a contact surface and a holding surface, wherein one end of the contact surface is connected with the tooth socket body, the other end of the contact surface is connected with the holding surface, and the orthodontic bench is a plat bench or a sloping bench, when the orthodontic bench is a plat bench, the contact surface matches with a occlusalf surface of maxillary-mandibular teeth, when the orthodontic bench is a sloping bench, the contact surface is in parallel with a lingual side of the a occlusalf surface of maxillary-mandibular teeth, or the contact surface and the a occlusalf surface of maxillary-mandibular teeth form an included angle. According to the invention, an ordinary tooth socket and a flat bite plate or an inclined bite plate are integrated into one body to replace the clasp and the flat bite plate or the inclined bite plate with adjacent hook-type retention. The appliance provided in the invention enlarges indication scope of orthodontic invisable aligner technique, and the appliance can be applied in a bracket treatment system. The appliance has characteristics of comfortable wear, transparentness and beautiful look, and is made of an elastic polymer material. The appliance can give continuous elastic force to the tooth that needs to be intruded or led, so that the orthodontic effect is better.

An electrospinning device is described for producing nanofibrous porous structures. The device comprises three or more neighbouring outlets (11) separated from one another by a distance of at least 4 cm and positioned in a first plane (12). The device also comprises a second surface (13) for receiving output from the outlets. A relative movement between the three or more neighbouring outlets (11) and the second surface (13) can be applied in a first direction and second direction, the second direction being substantially perpendicular to the first direction. The second surface (13) thereby is facing the first plane wherein the outlets are positioned. The device furthermore comprises a voltage source (9) adapted to apply a potential difference between the first surface and the second surface. It furthermore may comprise a recipient for containing a solution or melt to be electrospun from the outlets and comprises a providing means for providing (10) the solution or melt to the outlets. The present invention in one aspect also relates to a teeth whitening system for whitening teeth. The system is based on a nano-fibrous structure for applying to the teeth and also comprises a teeth whitening moiety comprising a bleaching agent. The use of the nano-fibrous structure allows the use of a low viscosity teeth whitening moiety, a good fit of the structure over the teeth, thus allowing to treat the tips of the canine teeth and sticking the device to the teeth whereby the preferred shape of the device when in use can be maintained. The present invention also relates to a corresponding nano-fibrous structure and a method for bleaching teeth.

A lingual bracket for orthodontic treatments in the anterior and canine tooth area comprises a slot directed in parallel to the base plate of the bracket, said slot being aligned in a manner that the slot opening points towards the chewing plane. The slot preferably has a depth that is lower than its width. As an element for securing an arch wire in the slot, said slot is preferably covered by a closing spring, which I stably held on the bracket frame in the opening and closing position. An arch wire inserted into the slot is pressed by the closing spring against the slot bottom and generates the forces on the bracket that are required for the tooth position correction. The use of safety lugs for the closing spring can be renounced, which reduces the height of the bracket.

A problem to be solved by the present invention is to provide a cheek enhancement piece which can be used casually and low-priced with a cosmetic consciousness similarly to false claws, false eyelashes, and the like, and moreover, adjustable by a person to be fit to own oral vestibule. The present invention provides A cheek enhancement piece, which is characterized by being composed of synthetic resin having flexibility, rubber elasticity, and shape retaining properties at normal temperature, and at the same time, being not deformed by human body temperatures, and capable of being freely formed at heating time, and provided with a length from a person's left molar tooth position reaching to the right molar tooth position and a vertical dimension (width) lower than the height of the gum in the oral vestibule, wherein, in the oral vestibule, at the positional portion opposed by the gum and the cheek mucous membrane and the positional portion opposed by the gum of the front teeth place and the lip mucous membrane, those portions are projected to the cheek mucous membrane side and the lip mucous membrane side, thereby making a lengthwise dimension (thickness) large, and at the same time, at the positional portion opposed by the gum at the canine tooth place and the lip mucous membrane, the lengthwise dimension is reduced, and further, the unevenness and contour in the entirety are made continuous by a smooth curve and formed.

The invention provides a shell-shaped dental instrument for correcting occlusal interference. The shell-shaped dental instrument takes the shape of an integral shell, and comprises a cavity, wherein the cavity is used for accommodating multiple teeth of a first tooth row; jaw pillows are formed in a convex manner in the opposite jaw direction in an area between canine teeth and molar teeth; the jaw pillows are used for opening the first tooth row and an opposite jaw tooth row to a sufficient extent, and then front teeth of the opposite jaw tooth row can be relieved from hindering adjustment of front teeth of the first tooth row; the cavity takes a geometrical shape for repositioning the multiple teeth to second arrangement from first arrangement; and the positions of the front teeth of the second arrangement are different from that of the first arrangement.

This invention comprises an orthodontic dental distractor for rapid orthodontic tooth movement, particularly into a fresh extraction socket. The rapid movement can occur from the effect of distraction osteogenesis.The device can include four components: a molar tooth band with buccal tube, a canine tooth band with buccal tube, a threaded screw, and a screw retaining clip. The threaded screw is engaged internally to the molar band tube which is threaded internally. The screw head bears externally on the anterior (mesial) end of the clip, and the clip bears externally on the canine band tube so that when the screw is turned the canine tooth moves distally toward the molar tooth. Thus the movement of a tooth can be controlled to proceed at a rapid and prescribed rate.

The invention relates to a lingual bracket for correcting the position of teeth, comprising a bracket base, which can be secured on the lingual side to a front or canine tooth, and comprising a bracket body, the bracket having a slot, which extends in the mesial-distal direction, delimited on the lingual side as well as on the gingival and occlusal sides, and which is intended for accommodating an archwire. In order to develop the bracket in such a way that an archwire can be easily inserted into the slot, by which even relatively small directional forces may be reproducibly exerted on the tooth and the risk of root resorption can be kept low, the slot is delimited on the gingival side by the bracket base and on the occlusal and lingual sides by the bracket body. Furthermore, a bracket system comprising a front or canine tooth bracket of this type and comprising a side tooth bracket is provided.

The invention provides a dental retainer 100, suitable for use in retaining a user's teeth (not shown) in position, said dental retainer 100 comprising a curved labial bow member 110 suitable for abutment against the labial side of a row of teeth of a user, said bow member 110 being composed of a fiber reinforced matrix of a suitable thermoplastic material. The bow member 110 is configured and dimensioned to extend operationally from a first end 112a to a second end 112b along the labial side of a user's teeth from at least a pre-molar to a pre-molar on an opposed side of a user's mouth. The dental retainer 100 further comprises a pair of support members 120 which are connected to the ends 112a &b of the labial bow member 110 at their anterior ends 124a &b respectively. Preferably, the support members 120 are removably connected to the labial bow member 110 by means of a connector 130. The bow member 110 and the support member 120 are mounted to a user's teeth operationally by means of a mounting device, such as an Adam's clasp 142, cross over members 146 connected to a base plate 144, or a loop member 148 suitable for extending around a user's back molar to a base plate 144. The dental retainer 100 further includes a canine stabilization component 150 for stabilising the dental retainer against a user's canine teeth.

The invention provides a ligula habit appliance. A main body material is a latex component, and is in an adjustable metallic framework structure. The appliance comprises a lip bumper, a drag hook, a palate bead and an occlusal pad, wherein an metallic framework of which the deformation can be adjusted is added to inside of a latex main body of the lip bumper, so that adjustment according to different soft tissue conditions of different patients is facilitated, and lip and cheek frenum and mucosa are prevented from being oppressed; a metal ring retractor extends out of an incisor teeth position in an upper jaw of the outer side of the lip bumper, and can penetrate through an index finger, so that training of lip muscle functions is facilitated; the palate bead is located on the inner side of the appliance; an ellipsoid of which the diameter is 5*10mm is arranged on the position corresponding to incisive papilla of the upper jaw, and is suitable for training the tongue muscle position; and the occlusal pad is made of a simple latex material, and comprises canine teeth, lateral teeth and incisor teeth on the left side and the right side; second molar teeth, which extend to a posterior area, of the occlusal pad are adopted as a special design for open-bite patents.

A mouthguard includes two sections, a vertical component and a horizontal component. The foam is molded into a configuration such that the vertical component curves around the anterior section of the maxillary dental arch to the lateral aspects, just beyond the canine teeth. At the mouth temperature of 98.6 degrees F., the vertical component is held perfectly between the upper lip and teeth by the general pressure of lip musculature. There is a V-shaped notch in the midline of the vertical section to accommodate the maxillary labial frenum. The horizontal component provides a bite platform and a slit is located along the midline forming two rearwardly extending tabs to facilitate the curvature of the bite platform. Accommodative curvature of the vertical section is provided by spaces between the horizontal component and the ends of the vertical component forming deflectable wings in these regions.

The invention discloses a method for teeth model parameterization. The method comprises the steps of calculating geometric center points of all teeth; fitting an upper jaw dentofacial plane and a lower jaw dentofacial plane, and calculating an upper jaw dental arch curve and a lower jaw dental arch curve; determining tip points of canine teeth of the upper jaw and the lower jaw; determining far-near-middle points, near-middle points and far-middle points of the teeth; determining a teeth coordinate system according to the tip points, the far-near-middle points, the near-middle points and the far-middle points; calculating FA points, central points and cutting edge points of the teeth, and the near-far-middle cheek points of accessional teeth; performing lip cheek-direction adjustment, tongue jaw-direction adjustment, single-tooth characteristic point adjustment and original tooth die long-axis adjustment; arranging the teeth at a single jaw according to a tooth position number sequencefrom incisor teeth along a dental arch through using the middle line of the dental arch as a reference; calculating a collision value between the single tooth and the adjacent tooth with a relativelysmall tooth position number, and moving a near-middle edge point according to the collision value. The method of the invention effectively improves accuracy and rationality of the parameters after teeth model parameterization.

The invention relates to an anterior tooth such as an incisor tooth or canine tooth built up in layers, with a cutting-edge material (30) at least partially covering a dentine material (28). At its occlusal end (38), the dentine material has projections (42) and / or irregularities (42, 46 and 48), which extend in the occlusal direction and correspond to 0.05 to 0.4 times the total length of a tooth.

The invention provides a locking differential and an automobile. The locking differential comprises a differential left shell, a differential right shell and a differential lock and is provided with a left half shaft and a right half shaft connected with the automobile, both the left half shaft and the right half shaft are connected with half shaft gears, a pin is arranged in the differential, a bevel planet gear is fixed by the pin, the differential lock comprises an inner canine tooth ring, an outer canine tooth ring and a hydraulic actuator, the inner canine tooth ring is connected with the left half shaft, a canine tooth groove is formed in the inner canine tooth ring, the outer canine tooth ring sleeves the inner canine tooth ring and axially slides on the inner canine tooth ring, canine teeth are arranged on the outer canine tooth ring, the outer canine tooth ring is circumferentially connected with the differential left shell, a first spring ring is arranged between the outer canine tooth ring and the inner canine tooth ring, the hydraulic actuator is fixed on the inner canine tooth ring, and an oil cavity is formed in the hydraulic actuator and communicated with an oil supply device. When the automobile slides or falls into a mud pit, the hydraulic actuator pushes the outer canine tooth ring to axially move, so that the first spring ring is compressed, the canine teeth are meshed with the canine tooth groove, power is directly transmitted to the left half shaft through the inner canine tooth ring, the differential loses a differential function, output torque is improved, sliding is prevented, and normal running of the automobile is ensured.

A mouthguard includes two sections, a vertical component and a horizontal component. The foam is molded into a configuration such that the vertical component curves around the anterior section of the maxillary dental arch to the lateral aspects, just beyond the canine teeth. At the mouth temperature of 98.6 degrees F., the vertical component is held perfectly between the upper lip and teeth by the general pressure of lip musculature. There is a V-shaped notch in the midline of the vertical section to accommodate the maxillary labial frenum. The horizontal component provides a bite platform and a slit is located along the midline forming two rearwardly extending tabs to facilitate the curvature of the bite platform. Accommodative curvature of the vertical section is provided by spaces between the horizontal component and the ends of the vertical component forming deflectable wings in these regions.

A depressing upper anterior teeth brace is characterized by comprising micro-implant anchorage nails and a brace. The micro-implant anchorage nails are divided into two groups; a first group is arranged on the cheek side and muco-gingival junction between a second premolar tooth and a first grinding tooth of the upper jaw, the angle between the first group and the teeth axis is 45 degrees; the second group is arranged on muco-gingival junction between the lateral incisor and the canine teeth of the upper jaw, the angle between the second group and the teeth axis is 45 degrees; multiple gaps are formed in bone cortex between the left second premolar teeth and the right second premolar teeth of the upper jaw in advance; the size of the first group of micro-implant anchorage nails is larger than that of the second group; the brace comprises a draw hook and a gap closing arch wire; one end of the draw hook is arranged on the gap closing arch wire, and the other end is connected to the micro-implant anchorage nails through a rubber band or an extension spring. During the upper anterior teeth rectification process, the brace can accelerate the tooth moving speed, at the same time, the distance for adduction-depressing upper anterior teeth is largely increased, the large irreversible damage to tooth roots is avoided, and the curative effect is largely improved.

The present invention relates to oral orthodontic technology, and is especially one kind of guide rod type orthodontic appliance for upper jaw embedded canine teeth. The orthodontic appliance includes a plastic palatal arch support, a fixing block, a guide rod, and an extraction device. The present invention aims at providing one kind of guide rod type orthodontic appliance for upper jaw embedded canine teeth with 3D adjustable orthodontic force, no use of dentition as anchorage and less irritation on upper lip mucous membrane. The present invention has the advantages of small orthodontic force, less blocking interference of adjacent teeth, reduced teeth moving resistance, less irritation on mucous membrane, etc.

The present invention provides an improved method and apparatus for use in diagnosing temporomandibular disorders. The apparatus includes separate maxillary and mandibular appliances, which are sized and configured to fit over and be retained on a subject's incisors. The two appliances both include generally flat, T-shaped platforms that face each other in a confronting relationship for all possible mandibular movements, including excursive movement and protrusive / retrusive movement. When properly fitted on the subject's opposing incisors, the two appliances effectively prevent contact between the subject's opposing upper and lower teeth, including the posterior and canine teeth, and thereby reduce the intensity of clenching of the temporalis muscles. The apparatus thereby can be used to provide an inexpensive way for determining whether an intraoral discluder of this kind will be effective in relieving tension headaches, common migraine headaches, or other temporomandibular disorders.

The invention provides a rainwater flow guiding pipe with silencing pipe walls and buffering canine-tooth-shaped protrusions on the inner wall. The portion between the two layers of pipe walls is divided into a plurality of closed small spaces which are filled with energy absorbing balls capable of eliminating noise. The canine-tooth-type staggered protrusions are arranged on the inner side of the inner pipe wall in the radial direction. After rainwater is washed down, the rainwater flows along a circumflex-shaped path formed by the staggered protrusions, rainwater washing speed is greatly decreased, sound generated when the rainwater impacts the pipe walls is also greatly reduced, and the effect of eliminating noise is achieved; the height of the protrusions becomes smaller accordingly, there is a large enough space in the flow guiding pipe on the premise that it is guaranteed that noise is lowered, and the utilizing rate is increased; wavy protrusions are arranged on the upper surfaces of the protrusion at the uppermost ends, the water flow speed can be further decreased during rainwater washing, and the effect of further eliminating noise is achieved; the outer surfaces of the protrusions are wrapped in PVC membranes, during rainwater washing, water flow can be buffered, and the effect of eliminating noise is further achieved.

The invention relates to a functional retainer, in particular to an occlusion functional retainer. The functional retainer comprises an upper jaw part and a lower jaw part, wherein the upper jaw part comprises arrow clasps fixed on molars on left and right sides, single-wall clasps fixed on bicuspids on left and right sides, and occlusal pads for connecting the arrow clasps with the single-wall clasps; the lower jaw part comprises interproximal hooks fixed on incisor teeth and canine teeth, arrow clasps fixed on canine teeth on left and right sides, and occlusal pads for connecting the arrow clasps with the interproximal hooks; the upper jaw part and the lower jaw part further comprise guide bevels respectively; the guide bevels are positioned on inner sides of the canine teeth; angles between the guide bevels and occlusal surfaces are 40-60 degrees; an inclination direction is opposite to a deviation mandibular direction. As proved by practice, the occlusion functional retainer provided by the invention can establish new occlusal balance of masticatory muscles rapidly, and has very good clinical application effect and high popularization value.

The invention provides an expansion type muscular activator for correcting class-II malocclusion. The muscular activator comprises a denture, and is characterized in that the denture is formed by a left denture and a right denture, and comprises an upper anterior tooth plastic cap and a lower anterior tooth plastic cap which are worn in the anterior tooth region, a palate denture, a vertical wing plate and an interocclusal part, wherein the palate denture is positioned at the oral palatal shelf part and the vertical wing plate is positioned on the tongue side of the lower dentition when the activator is worn; the interocclusal part is positioned between the backteeth occlusal surfaces of the upper jaw and the lower jaw; and the distal of the denture reaches the distal of the first molar of the upper jaw and the distal of the first molar of the under jaw. The expansion type muscular activator also comprises a screw and two draw hooks, the left denture and the right denture are connected by virtue of the screw; and the draw hooks correspond with mesial of canine teeth on two sides of the upper jaw. The expansion type muscular activator is reasonable in design, low in cost and convenient to wear, and is suitable for patients with early class-II high-angle malocclusion, especially cases of incompetent lips.

The invention provides a device for closing a tooth-extraction gap of an upper jaw, and relates to the field of clinics of orthodontics. According to the device for closing the tooth-extraction gap of the upper jaw, extracted teeth are left-side and right-side first premolar teeth of the upper jaw. The device for closing the tooth-extraction gap of the upper jaw comprises a bracket, buccal tubes, an arch wire, first draw hooks and second draw hooks, wherein the bracket is used for connecting left-side and right-side second premolar teeth of the upper jaw and the first premolar teeth into a whole; the buccal tubes are attached to the buccal side surfaces of the left-side and right-side second premolar teeth of the upper jaw; the arch wire is used for connecting incisor teeth and canine teeth of the upper jaw into a whole; the first draw hooks are bonded with the labial side surfaces of left-side and right-side canine teeth of the upper jaw; the second draw hooks are bonded with the buccal side surfaces of the left-side and right-side first premolar teeth of the upper jaw; a tension spring is arranged between the first draw hook and the second draw hook on the same side; two ends of the arch wire are inserted into the buccal tubes respectively. The device provided by the invention is applicable to the carrying out of gap closure 3 days after the first premolar teeth of the upper jaw are extracted, is simple in structure, and can be used for closing the gap within a shorter time and shortening an orthodontic course of treatment.

The invention discloses a canine tooth spliced type multi-union ecological purification pond which comprises a purification pond, a plurality of porous purification bricks, aquatic plants and a plurality of baffle strips, wherein the water inlet of the purification pond is communicated with a canal; the plurality of the baffle strips are arranged at the bottom of the purification pond; the bottomof the purification pond is partitioned into a plurality of long-stripy zones by the plurality of the baffle strips; the aquatic plants and the porous purification bricks are fixed at intervals amongthe plurality of the baffle strips; a plurality of porous purification bricks are arranged at intervals between adjacent baffle strips; two adjacent rows of the porous purification bricks are arrangedin a staggered manner. By adopting the purification pond, three water purification means of plant absorption, microorganism degradation and photocatalysis removal are integrated, a complementary purification mode can be achieved, concentrations of various pollutants in water bodies can be effectively reduced, and the water purification efficiency can be thus improved; the porous purification bricks are arranged in a canine tooth staggered arrangement mode, and water flows along a curve in the purification pond, so that not only is the water retention time of sewage in the purification pond prolonged, but also the water through quantity of the porous purification bricks is increased, and the water purification efficiency can be greatly improved.

The invention provides an ox-head fixator and a use method of the ox-head fixator. In the prior art, when oral examination or drenching operation is carried out on domestic animals, especially, the animals including sheep, dogs and oxen or the animals with developed canine teeth, the animals have great strength, and thus the oral cavities of the animals can not be manually opened. The ox-head fixator comprises a short handle, a head ring and a mouth ring, wherein the head ring (3) is an oval split ring, adjustment sheets (6) are respectively welded to two sides of the opening part, holes for an adjusting bolt (4) to pass through are formed in the adjustment sheets, the adjusting bolt is fastened by adopting an adjusting nut (5), the opposite side of the opening part is welded to the head part of the short handle (8), ear rings (2) are respectively welded to the middle parts of the two sides of the opening part and the welded part, reinforcing beams (7) are respectively welded to the opposite sides of the ear rings, and the reinforcing beams are respectively connected to the mouth ring (9) having the shape being consistent with that of the head ring but having the smaller size. The invention relates to the field of livestock medical treatment, and in particular relates to the ox-head fixator and the use method of the ox-head fixator.