241results about "Nerve needles" patented technology

The invention discloses a portable root canal cleaning device and a use method thereof. The portable root canal cleaning device comprises a first tube, a first piston movably arranged in the first tube, a first needle connected to the bottom of the first tube, a second tube, a second piston movably arranged in the second tube and a second needle connected to the bottom of the second tube. The device further comprises a pulling rope, one end of the pulling rope is connected to the first piston, the other end of the pulling rope is connected to the second piston, the pulling rope movably penetrates through a middle guide piece, and the middle guide piece is located above the upper limit of the stroke of the first piston and the upper limit of the stroke of the second piston. The first piston and the second piston can be linked through the traction rope, so that an additional positive pressure or negative pressure device is not needed to drive flushing fluid to flow in the flushing and swinging washing process, the cost of equipment is effectively reduced, and the equipment is more convenient to carry, transport, replace and maintain.

An endodontic microcannula system for evacuation of root canal contents from a root canal of a patient. The system includes a microcannula for insertion into the root canal, a handpiece for vibrating the microcannula while it is disposed within the root canal, and an irrigation fluid reservoir for supplying irrigation fluid to the root canal, an a vacuum source for drawing the fluid and root canal debris into the microcannula and out of the root canal.

Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and / or by additional irrigation.

Disclosed are an oral hygiene device and an oral hygiene device system, and a method of using the same. The oral hygiene device includes a housing, a battery, a control chip, a light source, and a light guide needle. Battery, control chip and light source are encapsulated in housing to form the oral hygiene device. The housing includes a connector, and light source is positioned in the center of connector. The light source is electrically connected to control chip and battery. The light guide needle is mounted on a head of the housing using a mortise-tenon structure. The light guide needle includes a mounting joint, and is in mortise-tenon connection and in interference fit with the connector through the mounting joint. The oral hygiene device has less damage to teeth or healthy tissue in the oral cavity, and has a good disinfection effect on bacteria in oral cavity.

An apparatus for treating a tooth or gum tissue is disclosed. The apparatus can include a tooth cap for supporting a treatment device during a treatment procedure. The tooth cap can comprise a platform to support the treatment device. The platform can include an access port to provide a portion of the treatment device with access to a treatment region of the tooth or gum tissue. The tooth cap can also include a wall coupled with and angled relative to the platform, the wall configured to be attached to the tooth or gum tissue during treatment.

Systems and methods for using a liquid jet apparatus for dental treatments are disclosed. In one implementation, the liquid jet apparatus may include a handpiece configured to deliver a high velocity liquid jet to a desired location in the mouth of a patient. The handpiece may include a positioning member having a channel through or along which the jet can propagate. The positioning member may have a distal end portion configured to be at least partially disposed in a pulp cavity, canal space, or opening in the tooth under treatment. During operation, the jet may impact an impingement surface of the distal end portion of the positioning member and be deflected as a spray through one or more openings in the distal end portion. The liquid jet apparatus may be used for root canal treatments.

Examples of apparatus, methods, and compositions for endodontic treatments are described. The apparatus can include a fluid platform configured to substantially retain fluid in a tooth chamber during treatment. The fluid platform can help maintain fluid circulation in the tooth chamber as fluid flows into and out of the tooth chamber. The apparatus can also include a pressure wave generator configured to generate acoustic waves that can be used for cleaning root canals and tooth surfaces in the tooth chamber. Examples of pressure wave generators include a liquid jet, an electromagnetic energy delivery device, and an ultrasonic device. The fluid can include antiseptic or antibacterial solutions to assist in tooth cleaning. The fluid may be degassed to have a reduced dissolved gas content (compared to non-degassed fluids used in endodontic treatments), which may improve the effectiveness of the pressure wave generation or the cleaning.

Aspects of the present disclosure relate to systems, devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display. Aspects of the present disclosure relate to systems, devices and methods for displaying, placing, fitting, sizing, selecting, aligning, moving a virtual implant on a physical anatomic structure of a patient and, optionally, modifying or changing the displaying, placing, fitting, sizing, selecting, aligning, moving, for example based on kinematic information.

A root canal cleaning device according to one embodiment of the present invention comprises: an acoustic pressure generating unit that operates in response to the electric input; a handpiece housing that accommodates the acoustic pressure generating unit; a coolant passage formed inside the handpiece housing; a coolant inlet that communicates with the coolant passage formed inside the handpiece housing; and a cleaning solution nozzle formed in the handpiece housing, wherein an ultrasonic acoustic pressure applied to a coolant is transmitted to a cleaning solution by the acoustic pressure generating unit, and vapor bubbles are generated in the cleaning solution by the transmitted ultrasonic acoustic pressure, and target contaminants inside the tooth including the root canal is removed by the action of the vapor bubbles and the cleaning solution on a tooth being treated. The cleaning solution includes a degassed liquid.

A signal supply unit (11) in a root canal treatment system (1) can supply a wetness detection signal for detecting the wetness of a root apex (2a1) to a root canal electrode (31) and a counter electrode (32). The root canal treatment system (1) includes: an operation unit (13) that is operated to switch between a state in which the signal supply unit (11) supplies an apical position detection signal and a state in which the signal supply unit (11) supplies the wetness detection signal; and a display unit (14) and a sound output unit (15) as notification units for notifying the electrical conduction state of the root canal electrode (31) and the counter electrode (32) which have been supplied with the wetness detection signal.

A needle assembly for an endodontic apparatus, comprising: a head for removably coupling the needle assembly to a handpiece; and a needle extending from the head at a proximal end to a distal tip, a lumen of the needle extending to an opening at the tip to deliver fluid into a root canal, wherein the needle tip is positionable within a portion of the root canal; and the lumen has a diameter to enable fluid to be delivered at a delivery pressure in excess of a threshold cavitation pressure, wherein delivery of fluid through the needle at a delivery pressure in excess of a threshold cavitation pressure into the root canal generates a backflow in the root canal that facilitates forming of a cloud of inertial cavitation within the fluid in the root canal forward of the needle tip.

Method for electronically indicating a concentration of an irrigation solution in a root canal (RC) of a tooth (T), using a device able to be electrically connected to an endodontic instrument engaged in the canal and to a labial electrode, and including a screen to display the progression of the instrument in said canal relatively to a critical apical point of reference such as the cemento-dentinal junction (CDJ), said device being furthermore able to measure, in the vicinity of said point of reference, by conductimetry, a concentration of an electrolyte irrigation solution injected into the root canal.

A vibration-side housing is attached to a tip of a handle-side housing, and a motor in which a plate cam is attached to a rotating shaft is housed. A vibration tube mounting opening opens at distal end part of the vibration-side housing, and a vibration tube is mounted thereon. The vibration tube is provided to vibrate in a forward-backward direction while urged in the plate cam direction via a spring with respect to the vibration-side housing. The vibration tube contacts with the plate cam via a roller at a rear end part. A reamer mounting opening opens at a tip of the vibration tube, and receives and tightly holds an insertion part of the reamer. The reamer including the bendable needle part is attachable / detachable to the vibration-side housing.

The oral cavity washing needle comprises a nickel-titanium alloy tube body, the nickel-titanium alloy tube body is of a drawing forming structure, the outer diameter of the nickel-titanium alloy tube body ranges from 0.20 mm to 3.5 mm, and the inner diameter of the nickel-titanium alloy tube body ranges from 0.1 mm to 3.3 mm; the length of the nickel-titanium alloy pipe body ranges from 10 mm to 70 mm. A notch is formed in one end of the nickel-titanium alloy pipe body, the notch is communicated with an inner hole of the nickel-titanium alloy pipe body, the notch penetrates through the end portion of one end of the nickel-titanium alloy pipe body, and a stamping needle wall is formed on the residual wall of the nickel-titanium alloy pipe body at the position of the notch. And the end part of the stamping needle wall is warped towards the notch to form a guide wall. The oral cavity flushing needle is made of the nickel-titanium alloy pipe, is not prone to being bent and broken when bent, and can reduce the risk of breakage. The end of the stamping needle wall is warped towards the notch to form a guide wall, and the flushing opening defined by the formed guide wall can reduce damage to the root tip area in a lateral water outlet mode.

In some embodiments, the distal end of an endodontic brush unevenly (e.g., not along a line perpendicular to the axis of the brush). Optionally, the uneven strands will contact the walls of a channel more evenly and / or will have an increased stirring effect than an evenly cut end may be cut using an abrasive cutter (e.g., a grinding wheel) and / or a laser and / or an electrical discharge machining (EDM) cutter. Optionally, a grinding wheel will rotate opposite the winding of the wire. Optionally, a rounded end may be formed on the wire. In some embodiment, a coupling between an endodontic brush and a handpiece is configured to be held rotationally to the handpiece by friction and / or locked longitudinally into the handpiece by an interference element. In some embodiments, an edge of the brush is roughened. Optionally, the brush may be bent and / or eccentric.

The utility model discloses a device for taking out filler in a root canal, and relates to the technical field of oral medical instruments, the device comprises a clamping body and a sleeve, the clamping body comprises a clamping rod and at least three clamping claws, and the clamping rod is provided with a first through hole extending in the direction of the center line of the clamping rod; one end of each clamping jaw is fixedly connected with one end of the clamping rod, and the other end of each clamping jaw can extend in the direction away from the other end of the clamping rod and away from the center line of the clamping rod. The clamping rod is sleeved with the sleeve, and the sleeve and the clamping rod can move in the direction of the center line of the clamping rod. The sleeve can extrude the clamping jaws by moving in the direction close to the clamping jaws, the clamping jaws are in a closed state, and the clamping jaws can reset to be in an open state when being disengaged from the sleeve. The utility model has the advantages of higher safety, better taking-out effect, simple structure and convenience in application.

The invention discloses a root canal oscillation negative pressure flushing system and method, and belongs to the technical field of medical instruments. According to the technical scheme, the negative-pressure washing system for root canal oscillation washing comprises a main machine module, a handle module, a negative-pressure washing needle head and a sewage collecting module; the negative pressure flushing needle head is of a dual-channel coaxial structure of a liquid supply channel and a negative pressure back suction channel, the negative pressure flushing needle head is rigidly connected with the handle module, and a vibration conduction assembly is arranged in the handle module; through the integrated design and the dual-channel coaxial structure, the operation process is simplified, the leakage risk is reduced, and it is ensured that liquid supply and negative pressure are synchronous; the liquid medicine is activated in combination with the vibration conduction assembly, the cleaning efficiency is improved, and the device has the advantages of being convenient to operate, reducing leakage risks, ensuring synchronization of liquid supply and negative pressure and improving the cleaning efficiency.

A method of endodontic therapy with improved disinfection and ablation characteristics may feature the use of an alcohol or polyol-based indocyanine green (ICG) solution with a laser system that emits a wavelength within the maximal absorption range of ICG. By matching the dye and laser output, radiant energy use is maximized for efficient ablation and disinfection of treated tissues. Also, the use of an alcohol or polyol as a solvent for the ICG solution increases the inherent disinfection qualities of the solution itself. In one embodiment, the prepared canal is flooded with the ICG solution and the laser activates with the laser fiber inserted into the solution. In an alternate embodiment, the solution is mostly removed prior to activation of the laser, but only after necrotic tissue has been stained.

An apparatus for heating and agitating an irrigant inside a tooth's root canal includes a first portion and a second portion. The first portion is sized and configured to extend into the tooth's root canal via a hole in the tooth's dentin, and is operable to heat and physically agitate an irrigant disposed in a tooth's root canal. The second portion is sized and configured to move the first portion while the first portion extends into the tooth's root canal, and is operable to move the first portion in response to a driving force that the second portion receives. With the ability of the device's first portion to heat and agitate an antiseptic irrigant disposed inside a tooth's inner chamber, one can use the activator to simultaneously heat and agitate the irrigant.

The utility model discloses a portable examination device for the department of stomatology, which comprises a probe handle, an integrated wire arranged in the probe handle, a wire holder A arranged at one end of the integrated wire and connected with the end part of a bent screw tube of the probe handle, and a disc seat of a probe in threaded connection with the end part of the bent screw tube, the integrated line is communicated with a light transmitting bundle in the probe needle tube and a transmission cable, the transmission cable is connected with the output end of an image sensor, and the input end of the image sensor is located behind an optical lens at the opening of the needle tube; the other end of the integrated wire is connected with the end of an outer cable through an external base, the end of the outer cable is in threaded connection with the bottom of the probe handle, and the other end of the outer cable is connected with an external light source and a displayer. The probe in the device can extend into a dental pulp cavity, the position and the shape of a root canal are displayed on the display by being connected with the outer cable, a dentist can conveniently carry out corresponding treatment, and compared with a traditional oral cavity optical lens, the device has the advantages of being small in size and low in cost.

The invention provides an ultrasonic cleaning device in a root canal. The ultrasonic cleaning device comprises a flushing module, an ultrasonic transducer, an ultrasonic handle and a water supply module, the flushing module comprises a flushing pipe, a liquid inlet pipe and a fixing handle, a liquid inlet of the flushing pipe is communicated with the liquid inlet pipe, a lateral opening is formed in the front end of the flushing pipe, and the flushing pipe is fixedly connected with the fixing handle; the ultrasonic transducer is connected with the fixed handle, the ultrasonic transducer is connected with the ultrasonic handle, the ultrasonic handle is provided with a control circuit board and a power supply, and the power supply and the control circuit board are electrically connected with the ultrasonic transducer; the water supply module comprises a water storage tank and a water pump, and the water storage tank is connected with the liquid inlet pipe through the water pump. By the adoption of the technical scheme, ultrasonic vibration in the root canal can be achieved, flushing in the root canal can be conducted, the cavitation effect occurs after liquid flows out of the pipeline under the ultrasonic effect, and the cleaning effect of the liquid on the interior of the root canal is improved.

In the tray, a tray body is of a resin structure attached to the interior of the oral cavity, the tray body comprises an upper surface, a tongue side A close to the tongue and a cheek side B close to the cheek, and the tongue side A and the cheek side B extend downwards from the two sides of the upper surface; the plurality of resin filling holes are formed in the tray main body in a penetrating manner and are used for injecting cured resin so as to fix the relative position between the tray main body and teeth; the positioning module comprises a plurality of positioning grooves for matching and aligning scanning data inside and outside the oral cavity and at least one scanning rod mounting hole for connecting a scanning rod; and the handheld part is arranged on the upper surface of the tray main body.

The present disclosure relates to the technical field of medical appliances, and provides a dental handpiece and a head thereof, and a root canal preparation machine. The head of the dental handpiece comprises a head housing; a movement cavity is provided in the head housing; a rotatable movement and a driving gear are provided in the movement cavity; the driving gear is sleeved on one end of the movement, and the movement can move along the axial direction of the driving gear; a reciprocating driving mechanism is further provided in the movement cavity, and the reciprocating driving mechanism is used for driving the movement to perform reciprocating movement along its own axis. Thus, when the dental handpiece of the present disclosure is used for root canal treatment, a root canal file is driven to perform reciprocating movement along its own axis by means of the reciprocating driving mechanism, and manual lifting is no longer required, thereby improving the treatment efficiency of root canal enlargement, reducing the requirements for the patient's cavity space, also facilitating the operation of root canal enlargement treatment, and improving the patient's experience of treatment.

This invention provides a pulse therapy system capable of rapidly controlling the output of pulsed current. [Solution] The pulse therapy system 1A comprises an intra-root canal electrode 30A placed on the affected area of ​​the subject, a counter electrode 40 placed on the subject's body, a pulse current generation unit 12 that generates a pulse current from a DC power supply unit 11 and supplies it to the intra-root canal electrode 30A and the counter electrode 40, a power supply current monitoring unit 14 that monitors the current value of the current supplied to the pulse current generation unit 12, and a control unit 15 that changes the output of the pulse current by controlling the pulse current generation unit 12 based on the current value.

A dental treatment apparatus according to the present invention includes a drive unit that includes a micromotor, a motor driver, and the like, a controller, and a root canal length measurement circuit. The controller controls the cutting tool to be held at a head forward driven in a direction of cutting of an object to be cut. The controller also controls the cutting tool to be reverse driven in a direction reverse to forward rotation drive when the cutting tool is forward driven and the root canal length measurement circuit detects a tip end of the cutting tool reaching a reference position. The controller further carries out a fail-safe control when the cutting tool is reverse driven and the root canal length measurement circuit detects movement of the tip end of the cutting tool toward a root apex position.

The invention relates to the field of dental pulp surgical instruments, and discloses a device for quickly cleaning diseased tissues around apical periodont.The device comprises a guide head, a scraping rod, scraping thorns, an adjusting rod, a main handle, an adjusting knob and an annular clamping groove; the guide head is fixed to the top end of the adjusting rod, the elastic scraping rods are evenly distributed along the circumference of the conical bottom of the guide head, the scraping thorns and the scraping rods are integrally formed, the scraping thorns are in a barb shape and evenly distributed in the length direction of the scraping rods, and the two ends of the scraping rods are connected with the conical bottom of the guide head and an annular clamping groove in the front end of the main handle respectively. And the adjusting knob is sleeved outside the main handle and is in threaded engagement with the adjusting rod. A linkage adjusting structure of the adjusting knob, the adjusting rod and the scraping rod and an elastic material are adopted, and the device can be contracted, unfolded and bent, so that the device is matched with a periapical bone cavity structure, periapical lesion tissues are thoroughly scraped and cleaned, the problems that a manual curette is poor in bone cavity adaptability and has a blind area are solved, the scraping efficiency is high, operation is standardized and safe, bone tissue damage is avoided, and the device is suitable for popularization and application. The cleaning effect is good and the view is clear.

The utility model relates to the technical field of deciduous tooth root canal treatment, in particular to a flushing auxiliary instrument for deciduous tooth root canal treatment, which comprises an injection needle body, a cylinder is arranged at the mounting end of the injection needle body, external threads are arranged on the outer surface of the cylinder, and a plug is arranged in the cylinder. The interior of the plug is of a hollow structure and is installed on the inner wall of the injection needle body in a communicated mode, the injection end of the injection needle body is arranged to be an oval pointed end, a plurality of flushing holes are evenly formed in the outer side wall of the oval pointed end, and the installation end of the injection needle body is installed on an externally-connected injector body. According to the utility model, the resistance mood of children can be avoided, a threaded retention syringe or a pluggable retention syringe can be selected according to clinical practice, and meanwhile, the bending angle of the syringe needle body can be adjusted according to different orientations of the root canals of the deciduous molar teeth for pre-bending, so that the flushing efficiency of the root canals in different orientations under non-direct vision is improved.

The invention provides a pulse micro-jet device based on a piezoelectric actuator and a pulse micro-jet forming method. The pulse micro-jet device comprises a pulse micro-jet module. The pulse micro-jet module comprises a jet nozzle, the front end of the jet nozzle is connected with a capillary tube, and a liquid outlet hole is formed in the side wall of the capillary tube; a liquid cavity communicated with the capillary tube is formed in the jet flow nozzle, a liquid injection opening is formed in the side wall of the liquid cavity, and an extrusion piece is arranged at the rear end of the liquid cavity. The extrusion sheet is limited in the liquid cavity through the pressing ring; the extrusion sheet is connected with the cavity push rod, and the gland is located at the tail end of the cavity push rod; the tail end of the cavity push rod is connected with the output end of the piezoelectric actuator; the pressing ring is connected with the gland through an elastic fixing component. According to the technical scheme, the generated pulse microjet can effectively remove dirt in the root canal, the cleaning efficiency of root canal flushing is improved, the treatment time is shortened, and meanwhile the discomfort of a patient in the treatment process is reduced.

The present invention relates to a device for driving an endodontic file head of an endodontic device and for operating a remote pump, the device comprising:a gear for the connection with the endodontic file head;a drive shaft for rotating the gear and for rotating at least one magnet;a first cylindrical element surrounding the drive shaft;a rotatable magnet holding means surrounding the first cylindrical element;at least one magnet fixed in the rotatable magnet holding means;a coil surrounding the rotatable magnet holding means;a second cylindrical element surrounding the coil;a central processing unit;an inner encoder on the central processing unit for measuring the velocity of the drive shaft;a transmitter;an antenna for sending a signal to a remote pump; andat least one sleeve interlinked with the drive shaft for moving the drive shaft by a motorized power handle.