157results about "Nerve needles" patented technology

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.

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.

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.

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.

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.

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.

The utility model belongs to the technical field of dental instruments, and relates to a root canal washing device which comprises an internal assembly, an integrally-designed shell and a shell end sealing structure arranged on the shell. The shell is further provided with a mounting cavity for mounting the internal assembly, at least part of the internal assembly is detachably connected with the shell, and the shell end sealing structure is detachably connected with an opening of the mounting cavity; a traditional upper shell and lower shell splicing structure is arranged into the integrated shell, the situation of offset between the upper shell and the lower shell can be avoided, meanwhile, at least part of the internal assembly is detachably connected with the shell, the internal assembly is conveniently inserted into the installation cavity and taken out, and disassembly and assembly are easy.

INSTRUMENTED ENDODONTIC FILE FOR DETERMINING ANATOMICAL DATA The present invention relates to a device for endodontic treatment of a root canal (11), comprising: - an instrumented file (20) including a passive zone (22) and an active zone (21), the active zone (21) being configured to provide position data by electromagnetic or optical radiation, - acquisition means (30) including a sensor (31), and configured to acquire position data within a system defined by the root canal (11) and the acquisition means (30), and - a treatment unit (40) connected to the acquisition means (30), and the treatment unit (40) is configured to process the position data of the active zone (21) within the system, in order to determine an anatomical datum of the root canal (11). Abstract figure: Fig. 4

A wall portion of a dental handpiece accommodates a cam pin 111 with a cam hole 21 or a cam groove 211 designed so that the size of the cam hole 21 or the cam groove 211 is larger than the size of the cam pin 111 in each of the axial direction and the circumferential direction of a vibration cylinder 20. Therefore, a rotating member 110 is rotationally driven, and a vibrating force acts on the vibration cylinder 20 in the axial direction through the cam pin 111. In this manner, the vibration cylinder 20 vibrates or reciprocates in the axial direction with respect to a second cylindrical member 12, and vibrates or reciprocates in the circumferential direction. In addition, a needle portion 42 protruding from a through-hole 202 of the vibration cylinder 20 vibrates while being bent.

The utility model provides a dental pulp root canal auxiliary positioning device which comprises a handle, a mounting box, a triangular block, a supporting plate and a butt joint shaft, the lower end of the handle is sleeved with a roller bearing, the outer ring of the roller bearing is fixedly connected with an anti-skid sleeve, guide grooves are formed in the front side and the rear side of the right end of the mounting box respectively, and a rotating shaft is mounted at the lower end in the mounting box; the annular side face of the rotating shaft is fixedly sleeved with a plurality of second rolling wheels, a notch column is movably connected to the upper portion of the installation box in an inserted mode, a first rolling wheel is rotatably installed at the lower end of the notch column, a circular ring is fixedly connected to the side face of the notch column in a sleeved mode, and a spring is installed on the side of the upper portion of the circular ring and connected with the notch column in a sleeved mode. The handle placing device is reasonable in structure, good in practicability, convenient to use and suitable for popularization and application, the handle is limited by utilizing the telescopic characteristic of the spring, and the stability of the handle during placing is greatly improved.

The utility model discloses a dental blowing drying device, relates to dental tool technical field, wherein the dental blowing drying device comprises a gun body and a needle body structure, the gun body comprises a support body and a gun head, the gun head is installed on the support body, one end of the gun head far away from the support body is provided with an external thread, and the needle body structure is detachably installed on the gun head. According to the technical scheme, the external threads are arranged at the end, away from the supporting body, of the gun head of the gun body, the needle body structure is additionally arranged, the needle body structure is detachably installed on the gun head, and the needle body structure is arranged in a hollow mode; the needle body structure comprises a sleeving part and a needle head, and the needle head is connected with the sleeving part; the inner diameter of the sleeving part is gradually increased in the direction from the tail end of the needle head to the top end of the gun head, an internal thread is arranged in the sleeving part, the sleeving part is in threaded connection with the gun head so that the needle head can be installed on the gun head, the outer diameter of the needle head is smaller than or equal to 0.5 mm, and then the needle body structure can stretch into a root canal of a tooth and blow-dry the tooth.

The invention provides an auxiliary positioning device for an oral dental pulp root canal, and relates to the technical field of root canal treatment equipment. Comprising a positioning platform and a positioning frame, and the positioning platform is arranged on the positioning frame; a positioning clamp is arranged on the positioning platform, a positioning sleeve is connected to the positioning clamp through an induction line, and an inductance device is arranged on the positioning sleeve; displacement assemblies are arranged at the tail ends of the positioning clamps; the displacement assembly comprises an outer pipe and an inner pipe, and one end of the outer pipe is sleeved with one end of the inner pipe. A first motor is arranged in the outer pipe, a driving screw rod is arranged on an output shaft of the first motor, and threads are arranged on the inner side of the inner pipe and are in threaded connection with the driving screw rod; a limiting groove is formed in the inner side of the outer pipe, and a limiting protrusion matched with the limiting groove is arranged on the outer side of the inner pipe. Compared with the prior art, the device is convenient to use and adjust, accurate in positioning and capable of effectively avoiding blocking the surgical field.

To provide an endodontic brush.SOLUTION: A distal end of an endodontic brush that is non-uniform, not along a line perpendicular to the axis of the brush. Optionally, the non-uniform strands contact the walls of the channel more uniformly and / or have an enhanced stirring effect compared to a uniformly cut end which may be cut using an abrasive cutter and / or a laser and / or an electrical discharge machining cutter. Optionally, the grinding wheel rotates counter to the windings of the wire. Optionally, a rounded end can be formed on the wire. In some embodiments, the coupling means between the endodontic brush and the handpiece is configured to be rotationally held to the handpiece by friction and / or longitudinally locked into the handpiece by an interference element. In some embodiments, the edge of the brush is roughened. Optionally, the brush may be bent and / or eccentric.SELECTED DRAWING: Figure 17

The utility model relates to the field of medical instruments. The tooth pulp aspirator comprises a shell, a sealing cover used for sealing the device is arranged above the shell, an aspirator is fixed on one side of the interior of the shell, an air bin is fixedly arranged on one side of the aspirator, a storage bin is installed on one side of the aspirator and the air bin, and a conversion bin is installed on the face, close to the aspirator and the air bin, of the outer side of the shell. A conversion disc is rotationally installed in the conversion bin, a bent channel is formed in the conversion disc, a communication groove is formed in the face, making contact with the suction device and the air bin, of the side face of the shell, and an installation groove is formed in the face, close to the conversion bin, of the communication groove. And switching between extraction and blowing cleaning can be flexibly adjusted in the working process.

Ultrasonic dental instruments, inserts, and insert assemblies are provided which include an acoustic transformer and a tip that, in combination, are configured to operate at an operational frequency different from the frequency of resonance of the transducer that drives the combination. As a result, the ultrasonic dental instruments, inserts, and insert assemblies provide improved performance durability by providing improved output stroke ranges over nominal wear lengths between, for example, 2 mm and 3 mm, which results in more durable performance over a longer service life.

A dental apparatus (1) and method, such as an endodontic apparatus and method, is disclosed. The apparatus includes a source (12) of fluid, a pump (14) for delivering fluid from the source (12) under pressure, and a handpiece (20) in fluid communication with the pump (14). The handpiece (20) includes a needle (30) extending from a proximal rear end of the handpiece to a distal forward tip from the handpiece, the needle lumen extending to an opening in the tip for delivering fluid received from the pump to a tooth. The needle dimensions and fluid delivery pressure are selected such that a cloud of inertial cavitation is formed in front of the tip of the needle by the flow of fluid through the needle.