144results about "Veterinary mouth openers" patented technology

An animal restraining device and method provide dual capability for restraining an animal and administering medications. A first embodiment provides an administration tube connected to a body with handles which can be grasped by user to position the device either for restraining or administering medications. A second embodiment is a continuous hook-shaped member having a hollow passageway in order to introduce medications. The second embodiment is reversible to place either end of the device in the animal's mouth for restraining or administering medications, depending upon the size of the particular animal. The method of restraint includes positioning the device in the animal's mouth and applying a force to elicit a natural response by the animal which causes the animal to pause or remain motionless for a period of time while a caregiver may treat or examine the animal.

The invention discloses a drenching device for livestock. The drenching device structurally comprises a piston push rod, a scale disc, an efficient drenching device body, a drenching hose, a medicinestorage tank, a holding handle, a drenching cylinder, a fixing mechanism, a rotary button adjusting mechanism, an idler wheel drive mechanism, a power transmission mechanism, a lever pushing mechanism, an oral cavity strutting mechanism and an anti-backflow device. According to the drenching device for the livestock, the opening angle of the oral cavity strutting mechanism can be adjusted according to the sizes of oral cavities of the livestock, thus the oral cavities of the livestock are clamped, and the livestock are prevented from biting the device and biting off the drenching hose; when medicine liquor is drawn, the medicine liquor can be prevented from backflow, and the drenching device is convenient to use by workers.

The invention discloses a two-piece type mouth opener for a tracheal cannula for animals. The two-piece type mouth opener comprises a first opening plate, a second opening plate, an adjusting nut and an adjusting supporting rod, wherein two long sides are turned towards the same side to form first side baffles, and oppositely arranged hinged parts are installed at the same ends of the two first side baffles; the second opening plate is installed on one side of the first opening plate with the first side baffles, the two sides of one end of the second opening plate are connected with the corresponding hinged parts respectively, and the second opening plate rotates relative to the first opening plate so as to adjust the size of a channel formed between the first opening plate and the second opening plate. The plate surface of any one of the first opening plate and the second opening plate is provided with a through hole, and the adjusting nut is connected with the through hole. The adjusting supporting rod penetrates the through hole and is in screw thread fit with the adjusting nut, and one end of the adjusting supporting rod abuts against and is connected with the opening plate which is not provided with the through hole. The two-piece type mouth opener can replace a manual rope loop ligature traction method used currently, the oral cavity of an experiment pig can be kept in an open state without the matching by multiple people, and the opening angle can be adjusted randomly.

A speculum useable for large mammals, such as cetaceans, has (a) a handle with a proximate end and a distal end; (b) a pair of expandable jaws attached to the distal end of the handle, the pair of jaws being adapted to effectively and humanly opening the mouth of a large cetacean; and (c) a jaw actuator for expanding the jaws.

The invention discloses a mouth dilator for animal tests, which comprises two plates. The plates are pivoted to a shaft and form a support part of the dilator, on one side of the shaft. The front ends of the support parts of the plates are provided with comb teeth. Each comb tooth is provided with a projection. At least one first comb tooth and the plate thereon are integrally formed, and the rest second comb teeth and the plate thereon are in rotatable arrangement. Meanwhile, the projections on the comb teeth of the plates are opposite. The amount of required comb teeth on the support parts of the mouth dilator for animal tests can be effectively adjusted according to the different sizes of animal mouths. The mouth dilator for animal tests is unique in design and good in supporting effect; through the use of the mouth dilator for animal tests, the problem of manually opening the animal mouths can be effectively solved.

The present invention provides a collection assembly for obtaining a sample from within the mouth of an animal. The collection assembly comprises a collection wand, having a scoop-shaped collecting end, and, optionally, an oral speculum. Also provided are methods of using the collection assembly to obtain an oral sample from the mouth of an animal without causing significant discomfort to the animal.

The invention discloses a rat mouth gag which comprises a base, a forward mouth gag, a lateral mouth gag and a rat fixing plate. The base is a rectangular groove body, the opener bases are symmetrically arranged on the left side and the right side of the top surface of the base, and the opener bases are also symmetrically arranged on the upper side and the lower side of the top surface of the base; the forward mouth opener and the lateral mouth opener are mounted on mouth opener bases on the upper side and the lower side of the base, one end of the forward mouth opener and one end of the lateral mouth opener penetrate through the through hole I, and the other end of the forward mouth opener and the other end of the lateral mouth opener are mounted in the through hole II through a rotating shaft I; the rat fixing plate is obliquely arranged in the middle of the base, the chest fixing belt and the leg fixing belt are arranged on the top face, the supporting rod is arranged on the bottom face, one end of the supporting rod is connected with the rat fixing plate, and the other end of the supporting rod is connected with the base. According to the rat mouth gag, on one hand, anterior teeth, posterior teeth, upper jaw and lower jaw of a rat can be opened in four directions at the same time, the opening distance in each direction can be independently adjusted, and on the other hand, the position of the rat and the positioning of the mouth gag can be achieved.

A speculum tool that adds a lower strap at a point that does not interfere with the with the movement of the jaws of the speculum. The lower strap provides a low point of attachment for the tool. Until now, equine speculums were tethered by the upper strap, with the tether secured onto an immobile structure, such as a wall of a barn. The rear strap would then be looping behind the ears of the patient and back to the opposite side of the speculum's upper jaw. In this way the upper strap provided an overhead attachment that elevated the animal's head during procedure, while the ear strap provided a lower attachment to keep the speculum from slipping off the head and to keep the upper strap from raising the head of an animal too high. The present invention adds additional low point attachment to an already improved rear strap for additional tethering security and as an additional factor in minimizing the risks of harming eyesight and spinal cords of equine patients.

The invention relates to a ruminant rumen fluid collecting device, and aims to solve the technical problems that a collecting tube is easily blocked by rumen content when ruminant rumen fluid is extracted by inserting the tube from an oral cavity, the rumen fluid is polluted as a traditional rumen fluid collection device is provided with a manual negative-pressure pump and the rumen fluid is filtered, and activities of rumen microorganisms are affected in the prior art. The ruminant rumen fluid collecting device comprises a circulating water vacuum pump, an exhaust tube, a collecting bottle lower portion, a filtering plate, a fixing plate, a collecting bottle upper portion, a collecting tube, a steel tube, an opener, a fixing belt and a nylon filter screen, an extraction opening of the circulating water vacuum pump is communicated with the collecting bottle lower portion through the exhaust tube, the collecting bottle lower portion is connected with the collecting bottle upper portion in a threaded manner, the collecting bottle upper portion is communicated with one end of the collecting tube, the other end of the collecting tube is communicated with the steel tube, one end of the steel tube far away from the collecting tube is hemispherical, and collecting holes are uniformly formed in the outer wall of the collecting tube. The device is used for rapidly extracting ruminant rumen fluid.

The invention relates to a medical instrument, in particular to a pika experiment animal shape of the tips mouth gag, which is characterized in that the instrument is provided with an upper jaw support frame (1) and a lower jaw support fame (2); an opening is formed between the upper jaw support frame (1) and the lower jaw support frame (2); the two ends of the upper jaw support frame (1) and the lower jaw support frame (2) are provided with an adjusting screw (3); being matched with the adjusting screw (3), the upper jaw support frame (1) or the lower jaw support frame (2) is provided with a thread (4); the upper jaw support frame (1) and the lower jaw support frame (2) respectively take on an arch shape or an M shape and are symmetrically arranged; the upper jaw support frame (1) and the lower jaw support frame (2) are made of rubber, plastic or stainless steel material. The instrument fully uses the features of fore-tooth of the pika experiment animal and can quickly the open oral cavity of animals by simple operations to ensure that the opening position of the animas is kept and difficult to drop off, thus improving the safety, accuracy and repetitiveness of the animal experiment.

The invention discloses a special examination system for animal husbandry and veterinary science. The special examination system comprises a base, wherein two sides of the bottom of the base are fixedly connected with rollers through supports; a vertical plate is fixedly connected with the bottom of the base; an electric clamp rod is fixedly connected with the left side of the vertical plate; a scale body is fixedly connected with the top of the base; a display screen is fixedly mounted on the front surface of the scale body; a controller is fixedly connected with the right side of the scale body; weighing sensors are fixedly connected with two sides of the top of the scale body; a tray is fixedly connected with the tops of the weighing sensors; a hydraulic ejector rod is fixedly connected with the center of the top of the tray. According to the special examination system, the head of an animal can be fixed on a flat plate through matching with a first thread bushing, a first cross bar and a second cross bar extend into the oral cavity of the animal, a pressing sleeve can be driven to move upwards by rotating a second bolt, then the first cross bar is driven to move upwards, so that the mouth of the animal is opened, and a veterinarian can check the oral cavity of the animal conveniently.

The invention provides a drenching mouth opening device for domestic pig breeding, and discloses a mouth opening device which is used for supporting and expanding the oral cavities of domestic pigs, pressing downwards and fixing the tongue roots and facilitating drenching. The device is characterized in that one end of a lower fixed arm is arranged at one end of a lower supporting arm, the lower fixed arm is of an arc structure, one end of a lower clamping arm is arranged at one end of the lower supporting arm through a connecting shaft, and the lower clamping arm and the lower fixed arm forma U shape; one end of a transmission arm is arranged at one end of the lower clamping arm, one end of a driving rod is hinged to the other end of the transmission arm, and a hinge hole in one end of the driving rod is a kidney-shaped hole; the middle of the driving rod is hinged to the lower supporting arm through a rotating shaft, the driving rod and the lower supporting arm form an X shape, theother end of the driving rod is connected with the lower supporting rod through a compression spring, and the other end of the lower fixed arm is connected with the other end of the lower clamping armthrough a telescopic rubber tube; a tongue depressor is arranged on the telescopic rubber tube, and rubber pads are arranged on the outer edge of the other end of the lower fixed arm and the outer edge of the other edge of the lower clamping arm respectively.

An expansion device for dog vocal cord excision comprises a pair of support pliers, an expansion device which is arranged at the handle ends of the support pliers and a clamp (5) which is connected with the support pliers in a sliding manner, wherein a chute and a sliding block are respectively arranged on the joint shafts of the support pliers and the clamp (5). Consequently, the expansion device is more convenient and quicker to operate, so the hurt to a pet dog is reduced.

The invention discloses a drencher used for veterinary, and relates to the technical field of veterinary appliances. The drencher includes a support plate, a support frame is fixedly arranged on the support plate, a compression cylinder is vertically fixed on the support frame, A stirring device communicated with the compression cylinder through a suction pipe is vertically fixed on the right sideof the compression cylinder, An upper tapping of that rotary shaft is provide with an external thread II and an external thread I with opposite screw directions, the bottom of the screw sleeve blockII and the screw sleeve block I are vertically fix with an expansion plate, a liquid discharge pipe extends downward between the two expansion plates, and a spray head is installed at the low end of the liquid discharge pipe; The drencher allows rotary stirring of the liquid medicine to be fed by a stirring device, The medicine liquid is uniformly mixed to ensure the full exertion of the medicineeffect, and the expansion effect on the mouth part of the livestock is realized through the back movement of the two expansion plates, so that the medicine sprayed out by the spray head can enter themouth of the livestock accurately, a good medicine injection operation is realized, and the medicine feeding quality is improved, the operation is simple and convenient, and the medicine injection efficiency is high.

The invention belongs to the technical field of medical experimental animal equipment and particularly relates to a rat oral cavity experiment operating platform and a use method thereof. The rat oralcavity experiment operating platform comprises a platform body, a support frame, a first fixing component, a second fixing component and an oral cavity fixing part, wherein the support frame comprises a cross beam as well as a first longitudinal beam and a second longitudinal beam which are used for supporting the cross beam; the cross beam is supported by the top end of the first longitudinal beam and the top end of the second longitudinal beam together; the first fixing component comprises a first connecting column and a second connecting column; the second fixing component comprises a third connecting column and a fourth connecting column; the oral cavity fixing component comprises an upper tooth fixing part and a lower tooth fixing part; the upper tooth fixing part is connected with one end in the length direction of the platform body and is near to the first fixing component, the distance between the upper tooth fixing part and one end in the length direction of the platform bodyis adjustable; the lower tooth fixing part is connected with the cross beam, and the distance between the lower tooth fixing part and the cross beam is adjustable. The rat oral cavity experiment operating platform can effectively open the oral cavity of a rat and is simple in installation and convenient in operation.

The invention discloses an experimental device for mouse tracheal intubation, including a fixing bracket, limb fixing members and a head fixing member arranged on the fixing bracket, and a light source device, the fixing frame is provided with an adjustable bracket for mounting the light source device, the adjustable bracket is used for adjusting the light source device to the position of the mouse neck, A support frame include a placing surface inclined with respect to that ground surface, A limb fasten and a head fastener are arrange on that placement surface, the head fixing member is an elastic rope, the elastic rope is used for fixing the mouse maxillary incisor, and a tongue clamper is also arranged on the fixing frame. The tongue clamper is provided with an elastic connecting rope,and the other end of the connecting rope is connected with the fixing frame. The tongue clamper is used for clamping the mouse tongue. The device provided by the invention can better fix the mouse, play an auxiliary effect, and quickly expose the mouse glottis.

The invention discloses a drenching device for animal husbandry and veterinary medicines. The device comprises a pressing plate, a piston rod, a drenching shell, a piston, an injection pipe and an a liquid inlet pipe; the piston is slidably arranged inside the drenching shell and is fixedly provided with the pressing plate through the piston rod; the liquid inlet pipe passes through the drenchingshell and is located on one side of the bottom of the drenching shell; and the injection pipe penetrates through the bottom of the drenching shell and a through hole is formed at the bottom of the drenching shell. Through match of a plurality of rotating rods, the mouth of an animal is opened and liquid medicines can smoothly flow into the body of the animal; and through arrangement of a buckle structure, the quantity of the liquid medicines is the same during each time of drenching.

The invention belongs to the technical field of animal husbandry and veterinary medicine feeding, and particularly relates to an anti-bite animal husbandry and veterinary medicine feeding device. The anti-bite animal husbandry and veterinary medicine feeding device comprises a frame body; auxiliary rods are rotationally connected to the two ends of the frame body; connecting rods are rotationally connected to the ends, away from the frame body, of the auxiliary rods; main rods are arranged on one sides of the auxiliary rods; baffles are connected to the front ends of the connecting rods; an electric push rod is installed at the rear end of the frame body; the two sides of the front end of the electric push rod are rotationally connected with supporting rods, and the ends, away from the electric push rod, of the supporting rods are rotationally connected with the middle of the main rod; a fixing frame is installed at the bottom end of the frame body; a shell is arranged below the fixing frame; a base is fixed to the bottom end of the shell; a medicine barrel is placed at the top end of the base, and a water fetching device is installed at the top end of the medicine barrel; the top end of the medicine barrel is connected with a hose; and a plug nozzle is installed at the end, away from the medicine barrel, of the hose. The problems that an existing medicine feeding device does not well protect a veterinarian when the veterinarian feeds medicine, consequently, the veterinarian is prone to being bitten by animal husbandry, and the safety of the veterinarian is affected are solved.

The invention provides an animal tooth brush. The animal tooth brush comprises a tooth brush handle. The animal tooth brush can brush the teeth of an animal, the problem is solved that currently, in the process of brushing the teeth of the small animal, the mouth of the animal is difficult to open, and moreover, by spraying a tranquilizer, the problem is solved that after the mouth of the small animal is opened, the small animal does not cooperate in the tooth brushing process. By means of the device, through a rotary brush head and a cleanser which is sprayed, the teeth are strongly cleaned,and thus, the cleaning effect is improved; the device achieves multiple functions by using a single motor through mechanical transmission fit, the cost of the device is reduced, and the energy consumption is reduced.

The invention relates to a sampling device, in particular to an animal oral cavity liquid sampling device for animal epidemic disease prevention and control. The invention provides an animal oral cavity liquid sampling device for animal epidemic disease prevention and control, which can enable the sampling work to be smoothly carried out. An animal oral cavity liquid sampling device for animal epidemic disease prevention and control comprises a bottom plate, and tires capable of moving are rotationally arranged at the four corners of the bottom of the bottom plate; the guardrails capable of preventing animals from running about are arranged on the two sides of the top of the bottom plate. The device has the beneficial effects that a first twisting block is rotated to drive a bevel gear to rotate, the bevel gear drives a two-way spiral shaft to rotate, first moving rods on the two sides move towards the inner side, and meanwhile clamping blocks are driven to move towards the inner side, so that the clamping blocks clamp the head of an animal, the head of the animal can be clamped, and the phenomenon that the head of the animal is damaged during sampling is avoided. And the animals run around.

The invention discloses a veterinary animal oral inspection device, comprising a fixed cylinder, a sliding column is arranged on the left side of the fixed cylinder, the right end of the sliding column penetrates the fixed cylinder and extends to the outside of which is fixedly connected with a first support plate, The top and the bottom of the sliding column located inside the fixed cylinder are fixedly connected with first limiting blocks. The present invention solves common animal problems by setting the first fixing plate, the first rotating shaft, the connecting plate, the second fixing plate, the second rotating shaft, the fixing block, the sliding groove, the sliding block, the powerful spring, the threaded rod and the threaded hole. Oral inspection devices often do not have the function of adjusting the support radius, so as to avoid the situation that the support radius is too large to cause pain to the animals, and the support radius is too small to achieve the purpose of inspection. There is no need to customize inspection devices that adapt to different oral sizes of different animals. It saves time and labor, saves a lot of materials, is convenient to use, and fully satisfies veterinarians' inspection of animal oral cavity.

A improved equine dental speculum includes upper and lower frames pivotably connected to one another, upper and lower jaw and teeth engagement bars mounted on respective ones of the upper and lower frames which fit in the horse's mouth, frame spacing bars extending between and connecting the frame and the frame spacing securement devices which each include a slide stop assembly movably mounted on the frame arm which includes a movably mounted carriage and a stop bar adjustably mounted thereon, the stop bar having a frame arm slot extending transversely therethrough and having dimensions slightly larger than the cross-sectional dimensions of the frame arm and through which the frame arm extends to releasably frictionally engage the frame arm so that the upper and lower frames will open along with the horse's mouth yet prevent the horse from closing its mouth until the stop bar is released.

The invention discloses a veterinary support device for the oral cavity. The veterinary support device comprises a lip-shaped support body, wherein the lip-shaped support body comprises an upper surface, a lower surface, a front plane and a rear plane; an operation opening penetrating through the front plane and the rear plane is formed in the middle of the lip-shaped support body; the upper surface and the lower surface are in contact with animal teeth and are coated with elastic material layers; lugs are symmetrically arranged on the left side and the right side of the lip-shaped support body; an annular nose loop which sleeves below the eyes and above the nose of an animal face is also arranged on the veterinary support device; the annular nose loop is respectively connected with the two lugs through two connecting ropes; neck ropes fixed to the neck of an animal are also connected onto the annular nose loop. According to the device disclosed by the invention, the mouth of the animal is enabled to be firmly kept in an open state; the safety and the convenience for use are realized; the injury to the teeth of the animal is avoided.

The invention belongs to the technical field of medical devices, in particular to a livestock oral cavity spreader for veterinary. The livestock oral cavity spreader for veterinary comprises a controlbox and a support plate, wherein two columns are fixedly connected between the control box and the support plate; the inside of the control box is provided with a control cavity, and the opposite side walls of the control cavity are provided with sliding grooves; a slide rod is fixed in the sliding groove, and sliding block is sleeved on the sliding rod; a servo motor is arranged at the bottom end of the control cavity; a screw rod is fixedly connected at the end of the output shaft of the servo motor; a moving block is sleeved on the screw rod, and two ends of the moving block are fixedly connected with two sliding blocks, and the upper end of the moving block is fixedly connected with a telescopic rod. The invention has novel structure, and through a simple mechanism, the livestock oralcavity spreader for veterinary can carry out distraction function on different sizes of oral cavity conveniently.

The invention belongs to the field of veterinary instruments, and particularly relates to an animal oral cavity diagnosis and treatment stent. The animal oral cavity diagnosis and treatment stent comprises a stent body, and is characterized in that the stent body comprises an upper supporting frame, an oral cavity limiting frame and a lower supporting frame which are connected from top to bottom. The animal oral cavity diagnosis and treatment stent is specially designed according to the anatomical structure features of the stomatognathic system of an animal, the size of the animal oral cavity diagnosis and treatment stent can be adjusted according to the three-dimensional diameter of the orofacial structure of the animal, a veterinarian can carry out throat examination, oral cavity examination, oral cavity nursing, dental treatment (such as root canal treatment and tooth body filling) and other veterinary care on the animal conveniently, and the stent can achieve the functions of protecting soft tissue, expanding the operative view field and isolating saliva contamination when used in the veterinary treatment process; furthermore, the stent is exquisite in design structure, convenient to disassemble and assemble, convenient to carry and easy to use and popularize.

The invention provides a drencher having a function of biting, for veterinarian diagnosis and treatment. The drencher comprises a biting piece pull rope and a moving groove, wherein a transparent baffle is mounted on the top surface of a bottom plate; a rotating platform adopting a circular structure and a medicine cylinder adopting a column cylinder cavity structure are also mounted on the top surface of the bottom plate; the medicine cylinder is located on the outer side of the rotating platform; a handle is mounted on the rear end surface of the bottom plate; two spring steel hanging framesare mounted on the top surface adjacent to the front side, of the bottom plate; a row of spring seats are mounted on the front end surface of the bottom plate; the moving groove is formed in the middle position of the transparent baffle; a biting piece is stuffed to the mouth of an animal, and the mouth of the animal can be held by labor; and different from other biting substances, the biting piece has the advantages that a plurality of circular steel sleeves are mounted on the biting piece of the structure, a fine liquid injecting pipe on the front side of the drencher can be selectively injected to the steel sleeves, and medicines are injected to the oral cavity of the animal, so that the medicine injecting process is more stable.

The invention discloses a tree shrew oral cavity expander for experiments, and mainly relates to the technical field of tree shrew experimental equipment. The tree shrew oral cavity expander comprisesa body sleeve, an elastic band and an adjustable opening supporting device, the adjustable opening supporting device comprises a supporting plate and an adjuster; an observation opening is formed inthe center of the supporting plate; the supporting plate comprises an upper supporting plate and a lower supporting plate, and the upper supporting plate and the lower supporting plate are rotationally connected through a rotating shaft; the adjuster comprises a fixed rod cylinder hinged to the tail end of the lower supporting plate and an adjusting rod cylinder hinged to the tail end of the uppersupporting plate. The tree shrew oral cavity expander has the beneficial effects that the tree shrew oral cavity expander is invented based on a new opening supporting device technology, has a betterfixing effect, is easy, convenient and efficient to use, and can adjust the supporting height according to the oral cavity size and experiment requirements; moreover, the mouth opening amplitude of animals can be slightly adjusted, and the animals can slightly adjust the mouth opening amplitude to improve the comfort level. Furthermore, the tree shrew oral cavity expander is not only suitable fortree shrews, but also suitable for all small experimental animals.

The invention relates to the technical field of animal husbandry, and discloses a device for solving the problems that livestock and poultry easily bite fingers and cannot be fed quantitatively duringfeeding. The device comprises a base, the left end of the base is movably connected with a bite rod, and the bite rod is used for automatically opening the mouths of the livestock and poultry duringfeeding; through cooperative use of a first gear, a rotating disc, a rotating rod and a limiting sleeve, the mouths of the livestock and poultry are automatically pried up during feeding, the mouths of the livestock and poultry do not need to be manually opened, and therefore the device is more intelligent; meanwhile, the livestock and poultry are prevented from biting the fingers, and therefore the device is safer; and through cooperative use of an injection pipe, a push rod and a liquid storage box, automatic feeding is achieved, quantitative injection is guaranteed every time feeding is conducted, and the situation that the treatment effect is affected due to the fact that the injection amount is insufficient or excessive is avoided; and through cooperative use of a limiting rod, a large gear and a small gear, the two steps of quantitative feeding and automatic livestock and poultry mouth prying are linked, so that the linkage performance of the whole device is improved, and operation is simpler.

Apparatus for spacing apart the jaws of an animal, such as a canine, in a fixed relationship during the performance of a medical or dental procedure. The apparatus includes a bite member for spacing apart the teeth of an animal, a strap adapted to be wound around the snout of the animal for confining the snout and a strap connector with the strap connector having one end thereof adapted for attachment to the strap and another end for holding the jaws in relatively tight engagement against the bite member after the strap is wound around the snout.

The invention discloses a rodent mouth opening and oral surgery auxiliary device. The device comprises an upper jaw frame and a lower jaw frame, left and right buccal mucosa support frames are connected between the upper and lower jaw frames, the upper and lower jaw frames and the two buccal mucosa support frames are connected through four first connecting pieces, and the distance between the upper and lower jaw frames and the distance between the two buccal mucosa support frames can be adjusted. By means of the mouth opening device, the interior structure of the oral cavity of a rodent can beeffectively exposed, and it is ensured that the operation on the oral cavity of the rodent is safely, efficiently and accurately carried out.