77 results about "Bite block" patented technology

The utility model relates to the technical field of veterinary medicine feeding, and discloses an anti-bite animal husbandry veterinary medicine feeding device which comprises a bite assembly, the bite assembly comprises a bite block, a bite elastic column is arranged in the bite block, and an extending pipe is arranged in the bite block in a penetrating mode. The needle tube assembly comprises a needle tube body, a piston rod cover piece used for pushing liquid medicine is arranged on the needle tube body, one end, close to the piston rod cover piece, of the needle tube body is fixedly connected with a clamping plate, and one end, far away from the piston rod cover piece, of the needle tube body is in threaded connection with an installation nut. According to the utility model, through the arrangement of the occlusion assembly, the occlusion block can be placed in the mouth of an animal to be bitten by the animal, so that the needle tube body is prevented from being bitten and damaged, and medicine feeding can be carried out smoothly; through the arrangement of the needle tube assembly and the placing assembly, the piston rod can be automatically pushed, manual pushing of the piston rod is not needed, labor and time are saved in use, various kinds of liquid medicine can be contained, and use is convenient and practical.

The utility model relates to an anti-bite device for an oral thermometer, which relates to the technical field of medical instruments and is used for solving the problem that in the prior art, a patient may unconsciously bite the thermometer, so that the risk that the thermometer is damaged is greatly increased. And the broken or damaged part of the thermometer may seriously threaten the oral cavity of the patient and even the whole digestive system to cause body injury. Comprising an upper meshing block and a lower meshing block, the upper meshing block and the lower meshing block are detachably connected, an inclined fixing through hole is formed between the upper meshing block and the lower meshing block, the fixing through hole is used for installing a thermometer, and the thermometer is detachable. Occlusion grooves are formed in one sides, in contact with teeth, of the upper occlusion block and the lower occlusion block.

The invention relates to the technical field of medical instruments, in particular to a multi-channel oropharyngeal ventilation device for the anesthesiology department, the multi-channel oropharyngeal ventilation device for the anesthesiology department comprises a ventilation pipe, a functional pipe and a mounting plate, two through holes are symmetrically formed in the side face of the mounting plate, and the ventilation pipe and the functional pipe are arranged in parallel and movably connected to the inner walls of the through holes of the mounting plate respectively; the device further comprises a guide plate fixedly connected to the middle of the mounting plate, occlusion blocks are symmetrically connected to the two sides of the guide plate in a sliding mode, the occlusion blocks are used for being occluded and limited between the upper teeth and the lower teeth of a patient, and the ends, facing ventilation, of the occlusion blocks are arc-shaped end faces. Through the vent pipe and the functional pipe which are arranged in parallel, ventilation support and clinical drainage, dosing and other operations in an anesthesia state are achieved respectively, repeated intubation is avoided, the locking assembly is matched to automatically lock the vent pipe and the functional pipe at the target depth after the device is in place, a catheter is effectively prevented from sliding or dislocation in an operation, and the operation efficiency is improved. And the accuracy and the safety of medical operation are ensured.

The utility model belongs to the technical field of artificial airway equipment, and particularly relates to a trachea cannula with a tooth cushion. The trachea cannula with the bite block comprises a body tube, the bite block is arranged on the outer wall of the body tube, the section of the bite block is oval, a plurality of first fixing teeth are arranged on the front face of the bite block, and a plurality of second fixing teeth are arranged on the back face of the bite block.

The utility model discloses an adjustable orthodontic mouth gag, the adjustable orthodontic mouth gag includes: mounting seat, slide subassembly and rotatory subassembly, mounting seat is placed in the oral cavity, slide subassembly includes slide cylinder and U-shaped top frame, the number of slide subassembly is two, and the slide cylinder is equipped with the U-shaped top frame. The sliding barrels of the two sliding assemblies are slidably installed in the first channel and the second channel correspondingly, the ends, away from the containing cavity, of the sliding barrels extend out of the first channel or the second channel, the U-shaped top frame is installed at the ends, away from the containing cavity, of the sliding barrels, and internal threads are arranged on the inner circumferential walls of the sliding barrels. The number of the threaded rods is two, the two threaded rods are in threaded fit with the two sliding barrels respectively, the transmission assembly is in transmission connection between the threaded rods and the connecting rod, and the end, away from the transmission assembly, of the connecting rod is suitable for extending out of the oral cavity. According to the adjustable orthodontic mouth gag, the stability is good, the operation of a doctor can be facilitated, and the operation convenience is improved.

The utility model relates to the technical field of medical instruments, and discloses an oropharyngeal airway device based on a bite block, which comprises the bite block, a through hole is arranged on the bite block, an oropharyngeal airway is arranged in the through hole, the oropharyngeal airway comprises a duck tongue opening and a pipeline connected with the duck tongue opening, a breather pipe is arranged on the inner wall of the pipeline, and a clenching part is arranged on the outer wall of the through hole. And a silica gel layer is arranged on the surface of the oropharynx airway. And a flexible bulge is arranged on the clenching part. According to the overall design of the oropharyngeal airway device, the physiological characteristics and clinical requirements of a patient are fully considered, and the rehabilitation process of the patient is promoted in the modes of reducing discomfort, improving the ventilation efficiency and the like. Meanwhile, soft material selection is also beneficial for preventing complications, such as pharyngeal edema, ulcer and the like, possibly caused by long-term use of the oropharyngeal airway. The device can ensure normal breathing of a patient, improves the comfort of the patient, and is suitable for patients needing airway support, such as painless gastrointestinal endoscopy patients.

The utility model relates to medical instrument technical field, specifically disclose a mouthpiece with adjustable caliber and have buffer function for gastroscope, including connecting plate, upper arc piece, lower arc piece, upper silica gel pad, lower silica gel pad, upper drawstring and lower drawstring, the first end of upper arc piece and lower arc piece is respectively hinged in the upper and lower sides of connecting plate, the length of the section of lower arc piece away from connecting plate is greater than the length of the section of upper arc piece away from connecting plate, the opposite side of upper arc piece and lower arc piece is connected with upper silica gel pad and lower silica gel pad respectively, the opposite side of upper arc piece and lower arc piece and close one end of connecting plate is connected with upper drawstring and lower drawstring respectively, the upper and lower sides of connecting plate are provided with the upper fixed hole and lower fixed hole respectively, the position between upper arc piece and lower arc piece on connecting plate is equipped with mirror body through hole, the utility model can prop open the mouth of patient, avoid damaging patient's teeth.

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

The utility model relates to medical instrument technical field, propose a kind of oral cavity saliva suction pipe with fixed function, including saliva suction pipe body, the one end of saliva suction pipe body is the same as gingival separator like sickle shape, the outside wall of saliva suction pipe body is provided with occlusal block, the side of occlusal block is provided with guide pipe, and saliva suction pipe body is inserted in occlusal block and guide pipe, the left and right sides of occlusal block are both fixedly installed with H-shaped casing, the upper and lower sides of occlusal block are both provided with occlusal plate, the side of two occlusal plates is all rectangular fixedly installed with four fixed columns, and fixed column and H-shaped casing are inserted between, the side of fixed column is sequentially provided with multiple insertion holes from top to bottom, one of H-shaped casing is provided with a pair of locking components, by the one end of saliva suction pipe body is set to sickle shape, to make the working end of saliva suction pipe body have a little angle, to further when extracting embedded tooth, can be used to fix incised gingival, assist doctor treatment, saliva can also continue to be sucked.

The oral cavity opening size adjusting device comprises a fixing frame and a measuring assembly, rotating seats are rotationally clamped to the two ends of the fixing frame correspondingly, through holes are formed in the rotating seats, a sliding rod and a threaded rod are slidably clamped in the two through holes correspondingly, and fixing blocks are fixedly connected to the bottom ends of the sliding rod and the threaded rod through longitudinal rods correspondingly; the measuring assembly comprises a guide rail connected between the two fixing blocks, a moving seat is slidably clamped on the outer side of the guide rail, and a pair of pneumatic rods are rotatably connected to one side, close to the guide rail, of the moving seat; the external shape of teeth of a patient can be measured by the measuring assembly and synchronized to the soft strip clamped in the shaping clamp, then the occlusion block is arranged in the extension direction of the soft strip and clamped to teeth of the lower jaw of the patient, and finally, the occlusion block is pulled through the fixing block so as to be matched with the fixing frame to open the oral cavity of the patient for auxiliary fixing.

The application relates to the technical field of dental instruments, in particular to an intelligent bite pad integrated with an opening device and a rubber dam clamp, which comprises a rubber dam clamp, the rubber dam clamp comprises two clamping arms and an elastic arc bow, the two clamping arms are connected through the arc bow, a first bite part is arranged on one side of the clamping arms close to the arc bow, a connecting shell is fixedly arranged on the top of the first bite part, a connecting port is arranged on the side, away from the first bite part, of the connecting shell, a second bite part is movably arranged on the connecting shell, an adjusting assembly for adjusting the distance between the first bite part and the second bite part is arranged in the connecting port, and bite grooves are arranged on the sides, away from each other, of the first bite part and the second bite part. During oral treatment, the rubber dam cloth is used to separate the diseased tooth from other oral structures, the diseased tooth is isolated, the patient bites the first bite part and the second bite part, the oral cavity of the patient is supported, and the comfort of the patient is improved.

The invention relates to the technical field of medical apparatus and instruments, and discloses an oral cavity catheter with distraction and negative pressure suction functions and a preparation process, the oral cavity catheter comprises an occlusion block, a negative pressure box, a protection blade assembly, a cheek protection part, a water outlet pipe, an atomization nozzle and a water inlet assembly; a plurality of connecting grooves are formed in the outer side of the occlusion block, detachable occlusion plates are arranged in the connecting grooves, elastic pieces are fixedly connected to the outer sides of the detachable occlusion plates, and the outer sides of the elastic pieces abut against the outer side of the occlusion block; one end of the meshing block is fixedly connected with the negative pressure box, and a negative pressure suction head assembly is connected to the inner side of the negative pressure box in an embedded mode. The end, opposite to the negative pressure box, of the meshing block is fixedly connected with the protection blade assembly. The oral cavity catheter with the distraction and negative pressure suction functions and the preparation process have the advantages that the position of the biteplate body can be adjusted to meet the oral cavity sizes of different patients, meanwhile, normal saline can be injected into the oral cavity regularly, and the oral mucosa of the patients is prevented from being dry.

The application discloses an intelligent device and alarm device for preventing accidental disconnection of a tracheal catheter, and relates to the technical field of medical devices.The device comprises a tracheal body, a bite block is arranged on one side of the tracheal body, and a placing groove is formed in the two sides of the bite block; the tracheal body is arranged in any one of the placing grooves; a fastening structure is arranged in the placing groove; the fastening structure comprises a fastening belt, which can fix the tracheal body; an alarm is arranged on the bite block, and the alarm can alarm when the tracheal body is disconnected; the fastening structure can be inflated immediately through the air bag ring when an abnormal axial tension is monitored, and the increasing resistance can be provided in the process of pulling out the catheter; the tactile feedback can often interrupt the unconscious behavior chain of the patient, the tracheal body can be prevented from moving out of the bite block, and the purpose of preventing the catheter from being disconnected is achieved.

The utility model discloses a silica gel bite-proof bite pad capable of fixing a trachea cannula. The silica gel bite-proof bite pad comprises a bite pad body made of silica gel, a plurality of suction holes are formed in the outer sides of the two ends of the bite block body, a suction cavity channel is formed in the bite block body, all the suction holes are communicated with the suction cavity channel, the suction cavity channel is communicated and connected with a suction pipe used for being connected with external negative pressure equipment, and a through hole penetrating through the front side and the rear side of the bite block body is formed in the bite block body. And a short tube capable of hooping the trachea cannula is coaxially sleeved in the through hole. The utility model has the advantages that the oral secretion can be effectively discharged, and the suffocation risk is reduced.

The utility model discloses an individualized tissue compensation device which comprises a support and a water bag detachably installed on the support, the support comprises a matching block, a one-way valve pipe, a deformable occlusion block and a tongue pressing block, the one-way valve pipe penetrates through the matching block, the deformable occlusion block and the tongue pressing block, and the one-way valve pipe penetrates through the other matching block, the deformable occlusion block and the tongue pressing block. The deformable occlusion block is clamped between the matching block and the tongue pressing block, the water bag is arranged at the end of the one-way valve pipe in a sleeving mode, and the water bag and the tongue pressing block are located on the same side. The support is placed in hot water, the deformable occlusion block can be softened, then the support is placed in the middle of the oral cavity of a patient, the tongue depressor presses the tongue, the patient occludes the deformable occlusion block, tooth marks are bitten out, and the deformable occlusion block is taken out and cooled for standby application, so that the individualized function is achieved. In addition, by arranging the water bag, tissue compensation can be formed by injecting water into the water bag and filling the oral cavity through expansion of the water bag, the normal tissue exposure dose is reduced, and the target area surface dose is increased.

The utility model discloses an oral care device capable of spraying oral care solution, which belongs to the technical field of medical instruments and comprises a biting block, a suction structure, a control structure and a cleaning structure. And a first through hole and a second through hole are formed in the biting block. The suction structure is installed at the first through hole, and the cleaning structure is installed at the second through hole. The control structure comprises an extrusion block, a push block and a control rod. And the control rod is rotationally matched with the biting block. And the push block is in sliding connection with the biting block and is in threaded connection with the control rod. The extrusion block is in sliding connection with the biting block in the radial direction of the first through hole, and the extrusion block and the control rod are matched through an inclined face so that the extrusion block can be pushed into the first through hole through the push block when the control rod rotates in the first direction. According to the oral care device capable of spraying the oral care solution, effective suction of sewage in the oral cavity and spraying of the oral care solution are achieved, the oral cleaning effect is improved, the suction action of the suction structure can be controlled by rotating the control rod, and operation is easy, convenient and reliable.

An oxygen mask may include a convex shell having an upper portion and a lower portion and defining a chamber, a rim at least partially around the chamber, a nasal access port in the upper portion, and an oral access port in the lower portion. The nasal access port that is penetratable and / or puncturable to provide access to the chamber, and the oral access port may include a bite block defining a lumen and a valve in the lumen. The oxygen mask may include an inlet into the chamber, an outlet from the chamber, and a sampling port in communication with the chamber. The oxygen mask may include at least one fold or crease configured to allow the bite block to tilt relative to the horizontal axis and / or to translate along the vertical axis.

1. Name of the product in this design: Braces Storage Box. 2. Purpose of this design: To store accessories such as invisible braces, retainers, orthodontic peripherals, removal devices, and bite blocks. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to the technical field of medical auxiliary instruments, in particular to an orthodontic mouth gag which comprises an upper supporting block, a lower supporting block, a connecting piece, a bottom plate, a fixing ring, a piston cylinder, a piston rod, a suction pipe, a limiting ring, a first one-way valve and the like. One side of the upper supporting block and one side of the lower supporting block are jointly connected with the connecting piece in a sliding mode, the upper supporting block is fixedly connected with the limiting ring, the upper supporting block and the lower supporting block are provided with adjusting mechanisms used for adjusting the distance, the bottom plate is arranged on the side close to the upper supporting block and the side close to the lower supporting block, and the limiting ring is fixedly connected with the bottom plate. The top of the bottom plate is fixedly connected with the fixing plate. The piston rod is driven by the air cylinder, the pull cylinder and other parts to do piston motion in the piston barrel, continuous extraction and discharge of oral cavity effusion are achieved in cooperation with the one-way conduction effect of the first one-way valve and the second one-way valve, the effusion is prevented from interfering with the surgical field, meanwhile, the suction pipe is positioned through the limiting ring, the stability of effusion extraction is guaranteed, and the operation efficiency is improved. And the convenience of orthodontic operation is improved.

A method of fabricating an orthodontic aligner may include forming a mold for an orthodontic aligner. The mold may include tooth receiving cavities shaped to move teeth of a patient form a first orientation towards a second orientation and a receptacle shaped to receive a base of a mold for an occlusal block. The method may include inserting a mold for an occlusal block into the receptacle, the mold for the occlusal block including a base for insertion into the receptable and a block support structure coupled to the base. The method may also include over molding a sheet of aligner material over the mold for the orthodontic aligner and the mold for the occlusal block and removing the sheet of aligner material from the mold for the orthodontic aligner while retaining the block support structure in the orthodontic aligner.

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 bite block for an edentulous patient, and relates to the technical field of bite blocks, the bite block comprises a bite block body, the outer wall of the bite block body is symmetrically provided with separation blades, the bite block body is detachably provided with two silica gel protective pads through a dismounting mechanism, the two silica gel protective pads are symmetrically arranged, and the silica gel protective pads are detachably connected with the separation blades. The two silica gel protective pads are in contact with the upper gum and the lower gum respectively, the silica gel protective pads are arranged, abrasion to the gum of a patient caused by a hard plastic material is reduced through the silica gel protective pads, protection to the gum of an edentulous patient is improved, the silica gel protective pads can be replaced, and the sanitation degree of the device in the using process is improved.

The bite tissue compensation device for radiotherapy comprises a bite support and a compensation structure, the bite support comprises a bite part and an inner extension support, the bite part comprises a bite area located at the end, the bite area is used for being matched with teeth in the oral cavity, the inner extension support extends towards the interior of the oral cavity from the bite part, and the inner extension support comprises an adapter plate; the compensation structure comprises a compensation area used for being attached to a tumor area in the oral cavity and further comprises an adapter cavity used for containing the adapter plate so as to fix the compensation structure and the inner extending support. The invention also provides a preparation method of the bite tissue compensation device for radiotherapy. According to the device and the method, the consistency and the accuracy of each radiotherapy treatment process can be ensured, personalized treatment requirements of patients can be quickly met, and a better treatment effect can be achieved.

This utility model relates to the field of veterinary medication administration technology and discloses a medication administration device for animal husbandry and veterinary medicine. The device includes a syringe body, with a connecting ring and a bite block connected to the output end of the syringe body. A connection port is formed on the side of the bite block near the syringe body, and a medication administration port is formed through the connection port on the side away from the syringe body. The outer wall of the connecting ring is slidably connected to the inner wall of the connection port. Movable openings are formed on both sides of the inner wall of the connection port, and limiting components are connected to the inner walls of both movable openings. The adjacent ends of the two limiting components are located inside the connection port and abut against the connecting ring located inside the connection port. A communicating alignment opening is formed between the connection port and the medication administration port. This medication administration device for animal husbandry and veterinary medicine, by setting a connecting ring and a bite block at the output end of the syringe body, allows the bite block to be inserted into the animal's mouth when administering medication. Even if the animal bites the bite block or even breaks it, the medication inside the syringe body will not leak.

The utility model discloses a tongue-biting-preventing mask, and relates to the technical field of clinical nursing. Comprising a face patch part, a nostril part is arranged in the face patch part, a pair of earhole parts is arranged in the face patch part, a first connecting band and a second connecting band are arranged on one side of the face patch part, a third connecting band and a fourth connecting band are arranged on the other side of the face patch part, the first connecting band is matched with the third connecting band in length, and the fourth connecting band is matched with the third connecting band in length. The second connecting band and the fourth connecting band have inclination angles and are matched in length, hook-and-loop fasteners are arranged on the upper wall faces of the first connecting band and the second connecting band, and hook-and-loop fasteners are arranged on the lower wall faces of the third connecting band and the fourth connecting band. A connecting structure of the bite block and the mask is designed, the device is fixed on the head of a patient and is convenient to adjust, a gap is reserved at the nasal cavity, breathing of the patient is not affected, the effect of preventing the patient from biting the tongue is achieved, and meanwhile the problem of labor of handheld nursing of a specially-assigned person is solved.

The utility model relates to an oral cavity ventilation tooth cushion for preventing tooth loosening, which comprises two connecting plates, rubber occlusion blocks are arranged at the tops and the bottoms of the two connecting plates, a catheter fixing assembly is arranged between the opposite sides of the two rubber occlusion blocks, the catheter fixing assembly comprises a lower arc-shaped plate, and an upper arc-shaped plate is arranged on the lower arc-shaped plate. And a lower arc-shaped plate is fixedly mounted at the top of the rubber occlusion block at the bottom, and an upper arc-shaped plate is arranged at the bottom of the rubber occlusion block at the top. According to the oral cavity ventilation bite block capable of preventing the teeth from loosening, the catheter fixing assembly is arranged, the distance between a lower arc-shaped plate and an upper arc-shaped plate can be adjusted, so that the bite block can meet the fixing requirements of ventilation pipelines or other pipelines with different thicknesses, and the height of the upper arc-shaped plate can be easily adjusted through an adjusting device; by means of the design, not only is the universality of the device improved, but also great convenience is brought to medical staff in actual operation.

The invention relates to an anti-tilt mouth gag supporting device for pediatric surgery, which comprises a base, a supporting tube fixedly erected on the base, a supporting frame slidably arranged on the supporting tube and an adjusting screw rod mounted on the base, the adjusting screw rod is in threaded transmission with the supporting frame, and a through groove allowing a mouth gag connector to be inserted is formed in the tail end of the supporting frame; a fitting cambered surface is formed on the lower surface of the base, a pair of clamping assemblies are symmetrically arranged on the two sides of the base, and each clamping assembly comprises a first clamping rod and a second clamping rod which are connected to the side edge of the base through a rotating shaft; and first torsional springs are arranged on the rotating shafts. The fitting cambered surface of the base is matched with the thoracoabdominal curved surface of a patient, so that preliminary stable positioning is realized; the first clamping rod and the second clamping rod on the two sides of the base are driven by the first torsional spring to be tightly attached to the side portion of the sternum and the area in front of the armpit of a patient, symmetrical multi-point clamping auxiliary fixing is formed, the base is stably placed on the soft supporting face, and the situation that the whole device is prone to inclining in the surgical operation is effectively avoided.

An endoscope bite block includes a body having a bite barrier portion located between upper and lower teeth of a patient when the bite block is in an assembled position, the body having a channel therethrough for insertion of an endoscope, the channel extending between an opening at a first end of the body and an opening at a second end of the body, at the assembly position of the occlusion block, the first end is positioned behind the teeth of the patient, and the second end is positioned in front of the teeth of the patient; and a holding device configurable between an assembly position or configuration that facilitates assembly of the bite block to the assembly position and a holding position or configuration that facilitates holding of the bite block in the assembly position.

The invention discloses a multifunctional gastrointestinal endoscope mouthpiece which comprises a mouthpiece body and a mask, the mouthpiece body is composed of a breather pipe and a tongue depressor, memory metal is arranged in the tongue depressor, and the tongue depressor can bend and press the tongue under the action of oral temperature, so that the root of the tongue is prevented from falling backwards, and the airway is kept smooth. The mouthpiece can be used in cooperation with a mask, the mask is provided with a catheter connector and an exhaust port, auxiliary oxygen supply and gas exhaust are supported, and the inspection safety and comfort are improved. The mouth biting device is reasonable in structure, high in adaptability and suitable for various clinical scenes, and the problems that a traditional mouth biting device is single in function, unsmooth in ventilation and the like are effectively solved.

On one hand, the utility model provides a dental instrument which comprises a U-shaped base plate, U-shaped grooves capable of containing an upper jaw dentition and a lower jaw dentition are formed in the upper side and the lower side of the U-shaped base plate respectively, elastically-compressible occlusion blocks of a lattice structure are arranged at the positions, corresponding to teeth to be depressed, in the grooves, and under the action of occlusal force of a patient, the teeth to be depressed can be depressed. The occlusion block can be elastically compressed to generate rebound force capable of depressing the tooth to be depressed, the lattice structure can be elastically compressed in the direction of the pressure, and the geometric shape of the lattice structure in the direction perpendicular to the pressure is basically kept unchanged.