51 results about "Impacted tooth" patented technology

A self-adjusting apparatus for moving an impacted tooth, wherein said apparatus is comprised a locking mechanism, an archwire disposed within said locking mechanism, and a ligature movably connected to said locking mechanism.

The invention belongs to the field of machinery, is especially suitable for the field of excavating, and specifically relates to a step-tooth excavating method of reciprocating impact excavators, and a step-tooth reciprocating impact excavator used for realizing the step-tooth excavating method. The step-tooth reciprocating impact excavator comprises a machine body, a travelling mechanism, an impact blanking mechanism and the like; the impact blanking mechanism is arranged on the machine body; and the travelling mechanism is arranged on the lower part of the machine body. The impact blanking mechanism comprises a step-tooth impact-cutting device, an impact power box, a power impact part, an impact guiding element and the like; step teeth are formed by adjacent impact teeth arranged on the step-tooth impact-cutting device. The step-tooth impact-cutting device is driven by the power impact part, material to be excavated is impacted to be step shaped so as to obtain two or more opposite free faces, and pressure stress and/or structural strength relative to original material is reduced greatly. When the impact teeth is used for excavating for another time, the two or the more opposite free faces are used for reducing impact resistance greatly; generation of oversized material blocks, which fall because of excavating, is avoided; impaction efficiency is increased, and equipment depreciation is reduced.

The invention discloses a composite drill bit. The composite drill bit comprises a drill bit body, a cutter wing, a tooth palm and a tooth wheel, the cutter wing and the drill bit are fixedly connected or integrally formed, cutting teeth are arranged on the cutter wing, the tooth wheel is rotatably connected with the tooth palm through a shaft, teeth are arranged on the tooth wheel, the compositedrill bit is characterized in that an impact unit is arranged on the composite drill bit, and the impact unit is composed of a rolling body, a transmission device and an impact device; the rolling body can rotate along self axis; and the impact device is composed of an impact rod and at least one impact tooth. According to the composite drill bit, the rock breaking efficiency is improved, meanwhile the drilling cost is saved, and the circumferential vibration of the composite drill bit can further be reduced.

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 invention relates to application of an allograft acellular dermal matrix in oral diseases, in particular to application of the allograft acellular dermal matrix in the repairing of cleft lip and/or alveolar cleft, cleft palate and oral mucous membrane defect, the repairing of periodontal defect and gingival recession, the repairing of nasal mucosa, tooth implantation, the repairing of furcation involvement and the prevention of complications such as dry socket after impacted tooth extraction, and belongs to the technical field of biological medical material tissue engineering. The allograft acellular dermal matrix is a product improved by a process, the mechanical performance of the product is suitable for surgery, and the sewing strength of the product is 16-18N; the allograft acellular dermal matrix is free of immunological rejection, capable of fast inducing tissue regeneration, soft in texture after implantation, free of contour feeling and good in in-vivo compatibility and hasa stable stent and template effect.

The invention provides a traction device bonded to impacted teeth. A ceramic bottom plate can be bonded onto the impacted teeth, a stainless steel plate is arranged on the ceramic bottom plate, a stainless steel ball is sunken in a concave ball groove of the stainless steel plate and can make rotary motion in the concave ball groove, a stainless steel rod is arranged at the top of the stainless steel ball, and an external thread is arranged on the upper half part of the stainless steel rod. A length adjusting unit comprises a stainless steel adjusting rod, the top of the stainless steel adjusting rod is inwards provided with an internal thread, the internal thread of the stainless steel adjusting rod is in matched connection with the external thread of the stainless steel rod, and a stainless steel ring is arranged at the bottom end of the stainless steel adjusting rod and connected with a fixed orthodontic appliance through an elastic chain or an auxiliary arch. The stainless steel adjusting rod can play a role in fixing and adjusting the length of the traction device so as to meet the requirement for traction of the impacted teeth at different depths. The traction device is smallin size, stimulation to surrounding tissue is little, and the comfort of a patient is good. Manufacturing is simple and standardized, and batch production is easy.

The invention belongs to the field of machinery and particularly relates to a method for rapidly assembling and disassembling a reciprocating impact tooth to a through hole tooth base and an impacting device with the through hole tooth base with the reciprocating impact tooth capable of being rapidly assembled and disassembled. The device comprises an insertion through hole reciprocating impact tooth, a reciprocating impact tooth through hole base, an insertion through hole reciprocating impact tooth handle, and the like. The insertion through hole reciprocating impact tooth handle is arranged in the reciprocating impact tooth through hole base, and is retained in a manner that the insertion through hole reciprocating impact tooth handle is retained against the reciprocating impact tooth through hole base via a tapered surface. A rotation-stopping device and the like are also arranged. The method and the device achieve rapid disassembly of the insertion through hole reciprocating impact tooth. The method and the device are practical and efficient, and expand the applications of a reciprocatingly impacting mining machine.

A reciprocating-impact excavating part for use in an excavating machine and having wear-resistant guiding sleeves that are easy to process/assemble/disassemble and are fastened by elongated threaded rods. Wear-resistant guiding sleeves (4) are arranged between impact guiding members (1) and an enclosure (8) and/or arranged between the impact guiding members (1) and rolling friction bodies (7). Impact heads (9) are arranged at one ends or either ends of the impact guiding members (1). Impacting teeth (12) are arranged on impacting teeth bases (11). When guiding threaded rods (13) are separated from the impact guiding members (1), the guiding threaded rods (13) are run through guiding threaded-rod holes (15) to be mated with guiding nuts (14) to fasten the impacting teeth bases (11), the wear-resistant guiding sleeves (4), the impact guiding members (1), and a guiding rod connector (2) into a single-body reciprocating impact frame (16). Alternatively, when the guiding threaded rods (13) and the impact guiding members (1) are a single body, the guiding threaded rod (13) are mated with the guiding nuts (14) to fasten the impacting teeth bases (11), the wear-resistant guiding sleeves (4), and the guiding rod connector (2) into the single-body reciprocating impact frame (16). The wear-resistant guiding sleeves (4) are driven by the guiding rod connector (2) and supported by the rolling friction bodies (7) to make reciprocating movements, thus increasing the practicability and service life of equipment.

The invention is an orthodontic bondable offset tooth eyelet which is attached to the lingual surface of an impacted tooth placing an orthodontic force attaching eyelet on an unattachable labial or buccal surface, the labial placement assures the tooth will arrive in its final position rotationally correct.

The invention relates to the technical field of medical treatment, in particular to a titanium alloy embedded tooth individual traction accessory printed through a three-dimensional technology. According to the titanium alloy embedded tooth individual traction accessory printed through the three-dimensional technology, according to the best traction pulling path for an impacted tooth, an adhesionpart and the traction direction of the traction accessory are designed, and the best specific part of a main traction accessory body and the best position of a traction hook are determined. Based on atitanium alloy material, according to the best design scheme for the traction accessory device, the main traction accessory body and the traction hook which completely fit the corresponding tooth surface are printed, wherein the main traction accessory body and the traction hook are integrally formed. The main traction accessory body and the traction hook can completely fit the tooth surface, andafter adhesion, the main traction accessory body and the traction hook cannot easily fall; compared with traditional stainless steel, the titanium alloy material is significantly excellent, the phenomenon of the soft and sclerous tissue inflammatory reaction cannot easily occur; the integrated structure is firmer, and the phenomenon of fracturing cannot easily occur.

The invention relates to an impacted tooth traction apparatus. The traction apparatus comprises a bottom plate, a fixed block, a connecting rod and a traction ring, wherein the bottom plate is used for connecting with an impacted tooth, the fixed block is fixedly arranged on one end of the bottom plate, one end of the connecting rod is connected with the fixed block, the other end of the connecting rod is provided with threads, and is connected with the traction ring through the threads, the traction ring is rotated, and the traction ring moves along the connecting rod toward or away from thebottom plate. The traction apparatus has a simple structure, a high bonding success rate, and is convenient for the strength traction of the impacted tooth in the three dimensional direction by usingan arch-wire or a rubber chain.

A compound tooth-shaped conical broken grinding head with point press teeth and long strip sieve pores consists of an inner cone sleeve connected on a main shaft through keys, an upper inner cone lining board, a lower inner cone lining board, an outer cone sleeve, an upper outer cone lining board and a lower outer cone lining board, wherein a point press lug boss on an impact face of an impact tooth of the upper inner cone lining board and the point press teeth on the upper outer cone lining board efficiently carry out point press, splitting and breaking on big-lump materials; and the long strip sieve pores on the lower inner cone lining board and lower outer cone lining board discharge a material of which the grain size meets the standard, prevent repeated fragmentation and reduce the consumption of a grinding material so as to achieve the aims of energy conservation and consumption reduction. The split type lining boards are easy to mount and repair.

The invention provides a PDC drilling head with a dynamic stress interference principle. The PDC drilling head comprises a drilling head body and at least two cutter wings, wherein the cutter wings and the drilling head body are fixedly connected or are molded integrally, the drilling head is provided with mixed cutting units composed of PDC teeth and impact teeth, the PDC teeth and the impact teeth in the mixed cutting units are arranged on two adjacent cutter wings correspondingly, the impact teeth can generate impact motions, in the mixed cutting units, the positional relation between the PDC teeth and the impact teeth is constructed to be in the peripheral direction formed by drilling head rotating, the PDC teeth are arranged behind the impact teeth, furthermore, the range of the distance D between the PDC teeth and the impact teeth is that the D is larger than or equal to d and less than or equal to 4d, and the d is the diameter of the PDC teeth. By means of the PDC drilling headwith the dynamic stress interference principle, the problems of the poor cutting tooth intrusion ability, the low rock breaking efficiency and the short drilling head working life in hard formation drilling of the drilling head can be solved.

The invention relates to a mouth distraction device for impacted tooth extraction, and the device comprises a breathable pad, u-shaped rods, a movable plate, a rubber support plate, a first spring, a driving mechanism and a clamping mechanism; one side of the breathable pad is symmetrically and fixedly connected with the u-shaped rods, the movable plate is symmetrically and slidably sleeved between the two u-shaped rods, and the first spring is symmetrically wound between one side of the movable plate and one side of each u-shaped rod in the circumferential direction. The breathable pad is moved to make contact with the face of a patient, the rubber supporting plate corresponds to the lips, the driving mechanism is pulled to operate, the driving mechanism operates to drive the rubber supporting plate to move outwards and open to support the lips, in this way, the patient does not need to open the mouth all the time, mouth ache is avoided, and it can be avoided that the mouth is slowly closed to affect extraction of impacted teeth.

The invention discloses a boning and tooth separation device for impacted tooth extraction. The device consists of a first mounting seat, a driving component and a drill bit. The first mounting seat is positioned and installed on teeth beside an impacted tooth fixedly, the driving component is connected to a controller, the controller controls the driving component for driving the multiangular adjustment rotation of the drill bit, and the first mounting seat is equipped with a fourth mounting seat for installing a microendoscope. With the cooperation of the microendoscope, a computer controlsthe controller so that the position of the drill bit can be adjusted according to the position of the impacted tooth, excessive destruction of soft and hard tissues can be avoided, and the minimal invasion purpose can be achieved. The drill bit moves flexibly, is front and back, left and right, up and down adjustable relative to the tooth arrangement direction, so that the drill bit can align to the impacted tooth more accurately, at the same time, the direction of the drill bit can be rotated and adjusted to enable the drill bit to perform cutting accurately, thus assisting a doctor in completing impacted tooth extraction quickly and efficiently.

The invention relates to a special dental elevator for pulling out a maxillary high embedded impacted tooth, and relates to the field of alveolar surgery auxiliary instruments. The dental elevator comprises a body, and the body comprises an elevator handle, an elevator rod and an elevator blade which are sequentially connected. The elevator rod comprises a body, a first bent part and a second bentpart which are sequentially connected, wherein the body is connected with the elevator handle, the elevator blade is connected with the second bent part, and the body comprises a first end and a second end which are opposite to each other. The first bent part is bent to the first end, and the first angle between the first bent part and the axis of the elevator handle is 145-155 degrees. The second bent part is bent to the second end, and the second angle between the second bent part and the axis of the elevator handle is 25-35 degrees. When an alveolar surgery doctor uses the dental elevatorto pull out the maxillary high embedded impacted tooth, blocking of adjacent teeth on the impacted tooth is ingeniously avoided during maxillary wisdom teeth pulling due to the design of the first angle and the second angle, the elevator blade can be wedged into the mesial part of the tooth, the mouth corner of a patient is not excessively pulled, and the dental elevator is more comfortable and safer to use.

The invention provides a grinding and removing structure and a hard tissue grinding and removing drill, the grinding and removing structure comprises a grinding and removing part and a positioning part, the grinding and removing part is used for grinding and removing an acted object, and the positioning part is arranged at the bottom of the grinding and removing structure and used for positioning the grinding and removing part on the acted object to prevent slipping. Therefore, in a dental operation, the grinding part can be driven to rotate so as to grind hard tissues, and the operation mode that in the prior art, the tooth main body is directly cut through a dental bur, and then each divided part is straightened out through a dental elevator is changed; the invention solves the problems that an existing dental bur is not easy to position during use, a gap formed by cutting is small, and the existing dental bur is easily clamped into hard tissue and even broken, is beneficial to improving the operation efficiency of a dental surgery, and reduces damage to non-grinding parts such as oral soft tissue; the invention is particularly suitable for impacted tooth extraction operation, the efficiency of tooth extraction operation is guaranteed, the operation is easier, and the risk of operative complications is reduced.