Ultrasonic Patents (Class 433/119)
  • Publication number: 20040126736
    Abstract: An insert for an ultrasonic dental unit is provided. The insert includes a transducer for generating ultrasonic vibrations, and a tip for applying the ultrasonic vibrations at a location inside the mouth of a patient. A connecting body is disposed between and attached to the transducer and the tip. The connecting body transmits the ultrasonic vibrations from the transducer to the tip. A retaining ring is snapped onto the connecting body. A hand grip is fitted at least partially over the connecting body and the retaining ring.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 1, 2004
    Inventors: Benjamin Atkin, Haim Levy
  • Publication number: 20040126738
    Abstract: An ultrasonic dental insert for an ultrasonic dental tool is provided. The ultrasonic dental insert includes a transducer, a connecting body, a hand grip, at least one O-ring and a removable tip. The transducer generates ultrasonic vibrations. The connecting body has a proximal end attached to the transducer and a distal end. The distal end has an engagement portion formed thereon. The hand grip envelopes at least a portion of the connecting body. At least one O-ring is for shock absorption, and is mounted between the connecting body and the hand grip and around the engagement portion. The removable tip engages the engagement portion.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 1, 2004
    Inventors: Benjamin Atkin, Haim Levy
  • Publication number: 20040126737
    Abstract: An ultrasonic dental handpiece for holding a transducer is provided. The transducer converts electrical energy into ultrasonic vibrations. The dental handpiece includes a body, a rotator head, and a retainer ring. The body rotatably receives the transducer. The rotator head engages the transducer for rotation thereof. The retainer ring is fixedly coupled to one of the body and the rotator head and rotatably coupled to the other of the body and the rotator head, such that the rotator head is rotatably coupled to the body.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 1, 2004
    Inventors: Benjamin Atkin, Haim Levy
  • Patent number: 6752629
    Abstract: An air-driven dental instrument (10) includes a replaceable vibrator module (16) detachably accommodated in an axial lodgment defined by an elongated outer casing (14) comprised of a frontal cap (22A) and a main body (26A) coupled with each other. When the cap (22A) is coupled, the module (16) is axially positioned against the cap (22A) by a positioning sleeve (90A) and is rotationally locked against the sleeve (90A) by a hexagonal formation (128) engaging into cutouts (136) formed on a housing (134). When the cap (22A) is disconnected from the main body (26A), the module (16) is retained by the housing (134) but is partly exposed therefrom. This permits a user to grip the module to thereby facilitate replacement of the module (16).
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: June 22, 2004
    Assignee: Micron Co., Ltd.
    Inventors: Eiji Suzuki, Yutaka Kadota
  • Patent number: 6726531
    Abstract: A tool for abrading a workpiece to smooth the surface thereof. In one embodiment, the tool is an ultrasonic tip (12) having plural grooves (16) formed in a smooth surface (14) thereof. Each groove (16) includes an abrasive material (24) coating the depression thereof. Rough surface areas of a workpiece projecting into the groove (16) are abraded to thereby result in a smooth workpiece surface. Once the surface roughness of the workpiece has been removed, the smooth areas (14) of the ultrasonic tip (12) are engaged, thereby preventing further abrasion of the workpiece.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: April 27, 2004
    Inventor: Stephen K. Harrel
  • Patent number: 6722882
    Abstract: An ultrasonic dental instrument or tip is disclosed for performing endodontic procedures. The instrument has a hub adapted to be operatively coupled to the output of an ultrasonic handpiece and a shank portion extending from the hub. A first portion of the shank extends in a generally axial direction from the hub and tip portion extends from the first portion. The shank has a bend therein between the first portion and the tip portion ranging between about 90° and about 140°. One embodiment of the tip has an enlarged, bulbous free end, with the latter having an end face cross sectional area larger than the cross sectional area of the tip portion proximate the enlarged free end. The enlarged free end has an abrasive coating thereon so that upon activation of the instrument by the transducer, the tip portion and the enlarged free end vibrates in a plane including the shank and tip portions.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: April 20, 2004
    Assignee: Earth City Technologies, Inc.
    Inventor: L. Stephen Buchanan
  • Patent number: 6716028
    Abstract: An ultrasonic insert carries a rotary bearing adjacent to the transducer. The bearing slidably engages an ultrasonic handpiece. When seated in the handpiece, the insert is substantially decoupled, on a rotary axis, from the handpiece. A rotary force need only be applied to the insert to rotate it in the handpiece. Alternately, an adaptor can be inserted into the handpiece. The adaptor slidably receives a conventional ultrasonic insert. The conventional insert can be easily rotated with a force applied only thereto, relative to the handpiece.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 6, 2004
    Assignee: Hu-Friedy Mfg. Co., Inc.
    Inventors: Anisur Mithu Rahman, Shu Chen, Patricia H. Parker
  • Publication number: 20040063064
    Abstract: An ultrasonic dental scaler automatically supplies a frequency to match a handpiece connecting thereto. A handpiece connector includes one or more passive elements, which affect the resonant frequency produced by the generator. Multiple handpieces, each operating at a different resonant frequency, may thus be used with the same ultrasonic generator. The ultrasonic dental scaler also supports two footswitches. One footswitch includes a foot-controlled power level adjuster. When connected, the footswitch automatically disables the manual power adjuster. Another on-off footswitch includes no power adjustment mechanism. When connected, the manual power adjustment feature of the generator is maintained. Orders for different handpiece frequencies and footswitch types can thus be filled with an inventory of one generator model.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventor: James Feine
  • Publication number: 20040038175
    Abstract: A dental tool for use with an ultrasonic transducer, the tool comprises a substantially elongate tool defined by a shaft having a proximal end with a coupling attachment at the proximal end for attachment to an ultrasonic transducer, and a distal end having a tip configured for performing a dental procedure, and a fluid passage extending from the proximal end to a port configured and positioned to direct fluid onto the tip.
    Type: Application
    Filed: August 26, 2003
    Publication date: February 26, 2004
    Applicant: Dentsply International, Inc.
    Inventor: Teresa R. Hickok
  • Publication number: 20040023187
    Abstract: A dental tool for use with an ultrasonic transducer, includes an elongated unitary shaft member having a longitudinal axis, a proximal end and a distal end having an outer surface having a surface area configuration taken from the group consisting of cylindrical, spherical, teardrop, bell and conical, an attachment member at the proximal end to enable detachable attachment to an ultrasonic transducer; and a cutting surface at the distal end defined by a plurality of grooves on the outer surface forming cutting edges. The cutting surface is formed by running threads around the shank of the tool in one or both directions.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 5, 2004
    Inventor: Teresa R. Hickok
  • Publication number: 20030219697
    Abstract: The invention is an improved endodontic adapter for a sonic scaler consisting of a talon having a threaded end for insertion into the handle of the sonic scaler. A pair of downwardly pointed barbs protrudes radially from the side of the adapter for receiving an elastic ligature, which firmly holds the dental instrument such as file to the talon. The opposite end of the talon has a tapered shaft that receives an aperture drilled into the side of the dental instrument. The ligature is simply wrapped around the dental instrument on opposite sides of the talon and then the ends are wrapped around the downwardly pointing barbs.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: Kenneth G. Hudak, D.D.S.
  • Patent number: 6619957
    Abstract: The invention provides an ultrasonic scaler, comprising: a scaler tip, actuator material, a coil, a hand-piece housing, and an air driven electrical current generator. The actuator material, the coil and the air driven electrical current generator are enclosed by the hand-piece housing. The scaler tip is connected to the actuator material. Preferably the actuator material is [Tb0.30Dy0.70Fe1.92]. The invention provides an ultrasonic scaler including a scaler tip, actuator material, a coil, a hand-piece housing, and a frequency control circuit. The actuator material, the coil and the frequency control circuit are enclosed by the hand-piece housing. The scaler tip is connected to the actuator material.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: September 16, 2003
    Assignee: Dentsply Research & Development Corp.
    Inventors: James G. Mosch, Allen G. Hoube, Peter H. Werner, Robert F. Hecht
  • Patent number: 6616450
    Abstract: The invention relates to a medical or dental-medical treatment instrument (1) having a grip sleeve (11), an oscillatory rod (13) which extends longitudinally in the grip sleeve (11) and is mounted therein in a radially or also axially elastically yielding manner, and an oscillation generator (31) for transmitting oscillations to the oscillatory rod (13). In order to attain a compact construction, the oscillatory rod (13) is of a base part and an attachment part which is fixed on the base part.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: September 9, 2003
    Assignee: Kaltenbach & Voigt GmbH & Co.
    Inventors: Walter Mössle, Bernhard Schilling, Gerd Löhn
  • Publication number: 20030157458
    Abstract: An ultrasonic dental instrument or tip is disclosed for performing endodontic procedures. The instrument has a hub adapted to be operatively coupled to the output of an ultrasonic handpiece and a shank portion extending from the hub. A first portion of the shank extends in a generally axial direction from the hub and tip portion extends from the first portion. The shank has a bend therein between the first portion and the tip portion ranging between about 90° and about 140°. One embodiment of the tip has a n enlarged, bulbous free end, with the latter having an end face cross sectional area larger than the cross sectional area of the tip portion proximate the enlarged free end. The enlarged free end has an abrasive coating thereon so that upon activation of the instrument by the transducer, the tip portion and the enlarged free end vibrates in a plane including the shank and tip portions.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 21, 2003
    Inventor: L. Stephen Buchanan
  • Publication number: 20030124485
    Abstract: This invention provides a device for removing a broken piece left in the root canal of a tooth comprising a handle to be held by the operator, a portion for fastening the broken piece, and operating means for operating the fastening portion.
    Type: Application
    Filed: September 17, 2002
    Publication date: July 3, 2003
    Inventor: Yoshitsugu Teraushi
  • Publication number: 20030108844
    Abstract: An ultrasonic insert carries a rotary bearing adjacent to the transducer. The bearing slidably engages an ultrasonic handpiece. When seated in the handpiece, the insert is substantially decoupled, on a rotary axis, from the handpiece. A rotary force need only be applied to the insert to rotate it in the handpiece. Alternately, an adaptor can be inserted into the handpiece. The adaptor slidably receives a conventional ultrasonic insert. The conventional insert can be easily rotated with a force applied only thereto, relative to the handpiece.
    Type: Application
    Filed: January 17, 2003
    Publication date: June 12, 2003
    Inventors: Anisur Mithu Rahman, Shu Chen, Patricia H. Parker
  • Publication number: 20030099917
    Abstract: Electrically-powered, hand-held, piezoelectric, dental scaler apparatus for its manufacture and use, wherein the apparatus includes a handle assembly having an elongated shaft passing through a bore within an inertial resistant mass, and one or more piezoelectric ceramic discs juxtaposed between the elongated shaft and the inertial resistant mass.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 29, 2003
    Applicant: Aseptico, Incorporated, a Division of North Pacific Dental
    Inventor: Jan Wietecha
  • Publication number: 20030096213
    Abstract: A dental tool for use with an ultrasonic transducer, the tool being substantially elongated and defined by a shaft having a proximal end with a coupling attachment at the proximal end for attachment to an ultrasonic transducer, and a distal end having a tip configured for performing excavation, finishing, removal and a dental polishing procedures, and a fluid passage extending from the proximal end to the distal end and exiting at a port at or proximate the tip.
    Type: Application
    Filed: November 20, 2001
    Publication date: May 22, 2003
    Inventors: Teresa R. Hickok, Clifford J. Ruddle
  • Publication number: 20030073055
    Abstract: A two-part, modular dental handpiece cable connector system that provides a convenient method for fast field replacement of worn or defective handpiece cables without disassembling the dental device. The two parts include a female connector element that mounts within the device housing and a male connector element to attach the cable. The female connector is further defined into two categories: snap-in mounting for enclosed, confined space cabinets and threaded panel mounting for universal attachment.
    Type: Application
    Filed: October 17, 2002
    Publication date: April 17, 2003
    Inventors: David Pollock, Matthew Barto
  • Patent number: 6514077
    Abstract: A method for dental plaque removal intended for consumer use comprises filling the mouth with a physiologically acceptable cleaning solution, solvent, or wash, holding such solution in the mouth under voluntary muscular control, thereafter inserting through the lips an elongate acoustically excitable probe forming, under muscular control, a seal with the lips. The probe is energized and a sonic or ultrasonic cleaning action in the mouth removes incipient plaque deposits from the teeth, without the necessity of visiting each tooth individually with a manual or partially automatic mechanical cleaning implement, such as a toothbrush. In an alternative embodiment, fluid fill is provided through a channel in the probe and filling of the mouth is accomplished following insertion. The method may be used in a more general sense to acoustically clean articles in a flexible portable enclosure by means of a portable probe or tool.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: February 4, 2003
    Inventor: Peter J. Wilk
  • Publication number: 20030022129
    Abstract: An ultrasonic insert insertable into a handpiece for carrying out a dental treatment is easily rotatable by a practitioner with only two fingers. The body of the insert is clamped via a torque lock element which carries a plurality of radially extending barbs which lock a handle thereto. The handle is locked to the torque lock element and is not movable relative thereto either axially or rotatably.
    Type: Application
    Filed: March 4, 2002
    Publication date: January 30, 2003
    Inventors: Anisur Mithu Rahman, Shu Chen, Patricia H. Parker
  • Patent number: 6503081
    Abstract: The present invention relates to a microprocessor-controlled ultrasonic control apparatus used to sweep a range of operating frequencies and to identify, store and tune to the resonant frequency of a magnetostrictively driven handpiece. This allows the user to change tip systems as desired and the device is not limited to a preset or switch selectable frequency. The unit automatically finds and adjusts to the frequency which corresponds to the resonant acoustic frequency of the magnetostrictive coil insert tip system.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: January 7, 2003
    Inventor: James Feine
  • Publication number: 20030003418
    Abstract: A handpiece (3a, 3b) includes an ultrasonic vibrator (21A) driven by an ultrasonic oscillator (40A) for vibration at an ultrasonic frequency in the range of 20 to 100 kHz, a low-frequency vibrator (21B) driven by a low-frequency oscillator (40B) for vibration at a low frequency, and a contact blade (10) connected to both the vibrators. Only the ultrasonic vibrator (21A) is driven for vibration and the contact blade (1) is brought into contact with an affected part for the mechanical anesthetization of the affected part. When the low-frequency vibrator (21B) is driven together with the ultrasonic vibrator (21A), low-frequency vibrations effective in separating the affected part, such as an affected tooth, are applied to the affected part in the mechanically anesthetized condition. The ultrasonic vibration of the ultrasonic vibrator (21A) does not stop and hence an operation, such as a tooth-extracting operation, is not interrupted even if the operator exerts large force on the contact blade (10).
    Type: Application
    Filed: July 10, 2002
    Publication date: January 2, 2003
    Inventor: Masaru Kumabe
  • Patent number: 6494714
    Abstract: The invention provides a method of making a transducer activated tool tip, comprising, providing a substantially linear tip body having a fluid inlet end and a fluid outlet end. The tip body has an inlet end and a subgingival outlet end. The tip body is bent in a first direction. In the tip body is formed a fluid passageway internal to the tip. The tip body is bent in a second direction, which is opposite to the first direction.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: December 17, 2002
    Assignee: Dentsply Research & Development Corp.
    Inventor: Leonard Copeland
  • Publication number: 20020168611
    Abstract: A dental tool for use with an ultrasonic transducer, includes a substantially elongate shaft having a proximal end with a coupling attachment at the proximal end for attachment to an ultrasonic handpiece or transducer, and a distal end having a tip configured as a cutting blade having an elongated substantially straight cutting edge, where, upon energization of the transducer, the cutting blade vibrates in a direction substantially coplanar to its cutting edge.
    Type: Application
    Filed: May 9, 2001
    Publication date: November 14, 2002
    Inventor: Syngcuk Kim
  • Publication number: 20020127512
    Abstract: An adapter for use with a piezoelectric and/or magnetostrictive ultrasonic unit can be coupled between the handpiece and the cable. The adapter includes a symmetrically oriented flow path with offset ends to mate with the handpiece and the cable respectively. The adapter also includes a rotary electrical connection facilitating the transfer of energy from the cable to the handpiece while the handpiece is being rotated. The rotary connection of the adapter can be integrated into either of the handpiece or the cable termination.
    Type: Application
    Filed: February 21, 2002
    Publication date: September 12, 2002
    Inventors: Shu Chen, Richard H. Paschke, Anisur M. Rahman, David W. Tipton
  • Publication number: 20020106608
    Abstract: A dental prophylaxis device (10) has a drive unit (11) a removable connecting cable (12) and a removable handpiece (13) which can be employed with an air polishing insert (15) or alternatively, an ultrasonic scaling insert (14). By removing the handpiece (13) from its insert (14, 15) and it cable (12), handpiece 13 can be sterilized in a conventional manner.
    Type: Application
    Filed: November 5, 2001
    Publication date: August 8, 2002
    Inventors: David Pollock, Matthew Barto
  • Publication number: 20020072034
    Abstract: A dental tool for use with an ultrasonic transducer, includes a substantially elongate shaft having a proximal end with a coupling attachment at the proximal end for attachment to an ultrasonic transducer, and a distal end having a tip configured as a cutting blade having an elongated substantially straight cutting edge.
    Type: Application
    Filed: December 7, 2000
    Publication date: June 13, 2002
    Inventors: Teresa R. Hickok, Syngcuk Kim
  • Publication number: 20020072035
    Abstract: A dental tool for use with an ultrasonic transducer, the tool comprises a substantially elongate tool defined by a shaft having a proximal end with a coupling attachment at the proximal end for attachment to an ultrasonic transducer, and a distal end having a tip configured for performing a dental procedure, and a fluid passage extending from the proximal end to a port configured and positioned to direct fluid onto the tip.
    Type: Application
    Filed: February 4, 2002
    Publication date: June 13, 2002
    Applicant: DENTSPLY International Inc.
    Inventor: Teresa R. Hickok
  • Patent number: 6386866
    Abstract: A method of lighting a scaling tip including providing a light source electrically connected to a secondary coil, and providing a scaling tip having an arm extending into a primary coil and adapted to be ultrasonically vibrated by the primary coil.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Dentsply Research & Development Corp.
    Inventors: Robert F. Hecht, Horacio R. Cabana, Peter H Werner
  • Publication number: 20020031744
    Abstract: The invention relates to a medical or dental-medical treatment instrument (1) having a grip sleeve (11), an oscillatory rod (13) which extends longitudinally in the grip sleeve (11) and is mounted therein in a radially or also axially elastically yielding manner, and an oscillation generator (31) for transmitting oscillations to the oscillatory rod (13). In order to attain a compact construction, the oscillatory rod (13) is of a base part and an attachment part which is fixed on the base part.
    Type: Application
    Filed: August 8, 2001
    Publication date: March 14, 2002
    Inventors: Walter Mossle, Bernhard Schilling, Gerd Lohn
  • Publication number: 20020028421
    Abstract: The invention relates to a medical or dental-medical treatment instrument (1) having a rod-like handpiece (2) with the forward end region of which a tool (3) can be releasably coupled by means of a tool coupling (4), and the rearward end region of which can be releaseably coupled with a connection part (6) by means of a handpiece coupling (5), preferably a plug-in/turn coupling, the handpiece having: a grip sleeve (11) which forms an outer body of the handpiece (2), an oscillatory rod (13) which extends longitudinally in the grip sleeve (11) and is mounted therein radially or also axially elastically yieldingly, an in particular pneumatic oscillation generator (31) for transmitting oscillations to the oscillatory rod (13), and a sleeve (14) surrounding the oscillation generator (31). For reducing noise emissions, the sleeve (14) is of elastically compressible or sound-absorbing material.
    Type: Application
    Filed: August 8, 2001
    Publication date: March 7, 2002
    Inventors: Bernhard Schilling, Gerd Lohn, Bernd Gugel, Walter Mossle
  • Patent number: 6328566
    Abstract: A color coding system and method for visually identifying and distinguishing ultrasonic dental tool inserts. The invention employs a color-coded removable cap that is used to secure a handgrip, which can also be color-coded, to the insert. The caps and/or handgrips of different inserts thus have different colors to visually distinguish one insert or type of insert from another.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: December 11, 2001
    Inventor: James Feine
  • Patent number: 6312256
    Abstract: A dental instrument adapted to be fixed to a hand piece suitable for communicating ultrasound waves to the dental instrument, includes at least one arm ending in an active extremity that has two longitudinal concavities in opposing surfaces.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: November 6, 2001
    Assignee: Satelec SA
    Inventors: Francis Dieras, Edmond-Pierre Benque
  • Patent number: 6312255
    Abstract: The invention is an improved endodontic adapter for a sonic scaler consisting of a talon having a threaded end for insertion into the handle of the sonic scaler. A pair of downwardly pointed barbs protrude radially from the side of the adapter for receiving an elastic ligature which firmly holds the dental instrument such as file to the talon. The opposite end of the talon has a tapered shaft that receives an aperture drilled into the side of the dental instrument. The ligature is simply wrapped around the dental instrument on opposite sides of the talon and then the ends are wrapped around the downwardly pointing barbs.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: November 6, 2001
    Inventor: Kenneth Hudak
  • Patent number: 6273717
    Abstract: A dental instrument for sonic or ultrasonic treatment comprises a shank (1) to which a treatment section (2) is joined. The shank (1) and treatment section.(2) are made of matrix-bonded carbon fibers. The instrument can be machined out of a woven carbon fiber fabric or can be a compression molding or an injection molding. The mechanical properties of the instrument can be adjusted by varying the length of the carbon fibers.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: August 14, 2001
    Assignee: Durr Dental GmbH & Co. KG
    Inventors: Rainer Hahn, Uwe Grotz
  • Patent number: 6267594
    Abstract: The invention relates to a medical or dental-medical instrument (1) for the material-removing working of body tissue or a substitute material, having an elongate handpiece (2), a holding device (4) arranged in the forward end region of the handpiece (2), and a tool (5) having a tool shaft (5a) and a tool body (5b) connected therewith, which is releasably connected with the handpiece (2) by means of the holding device (4), there being arranged in the handpiece (2) a vibration drive (6) for the tool (5), which transfers to the tool (5) high frequency oscillating movements, back and forth in at least one plane or orbital or three-dimensional, the tool body (5b) having an abrasive working surface (5c), the tool body (5b) being formed by means of a lamina (B), and the working surface (5c) being arranged at a narrow edge (21) of the lamina (B).
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: July 31, 2001
    Assignee: Kaltenbach & Voigt GmbH & Co.
    Inventor: Burkhard Hugo
  • Patent number: 6241520
    Abstract: An automatic drive circuit for an ultrasonic probe, such as a dental scaler insert, is operative with a probe which includes a magnetostrictive unit and a vibratory element to be set into vibration by the magnetostrictive unit upon energization of the magnetostrictive unit with an alternating magnetic field. An energizing coil is enclosed within a handle having a compartment for receiving the probe. The coil is located within the handle adjacent to the probe-receiving compartment for applying the alternating magnetic field to the magnetostrictive unit upon insertion of the probe into the handle and upon energizing the coil by the drive circuit. An oscillator of the drive circuit is coupled to the coil for applying an oscillatory current to the coil. The drive circuit includes a frequency sensor for sensing a frequency of the oscillatory current, the sensor outputting a signal designating a magnitude of the frequency.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: June 5, 2001
    Assignee: Coltene/Whaledent
    Inventors: Igor Y. Gofman, Steven Abdelgader, Joseph G. Colombo
  • Patent number: 6227853
    Abstract: A magnetic coupling system comprising a magnetic assembly for removably combing a base structure and a tool insert is described. This arrangement allows energy from a transducer located in the base structure to be transmitted through the magnetic assembly to the tool insert. In one embodiment, the magnetic assembly comprises one or more magnetic inserts located between the base structure and tool insert and a permanent magnet or an electromagnet located proximate to the one or more magnetic inserts. The permanent magnet can be axially polarized, radially polarized or polarized at any intermediate angle. In one embodiment, the two components being coupled are a wave guide in direct contact with an ultrasonic motor and a dental scaling tool. In this embodiment, vibrational motion is transferred from the acoustic extension to the tool insert.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: May 8, 2001
    Assignee: Edge Technologies, Inc.
    Inventors: Thomas T. Hansen, Billy R. Flowers
  • Patent number: 6190167
    Abstract: An ultrasonic dental scaler for use with a dental scaler insert having a resonant frequency associated therewith includes a handpiece adapted for removably receiving the dental scaler insert, an energizing coil mounted on the handpiece, whereby the energizing coil substantially surrounds the dental scaler insert. The ultrasonic dental scaler includes a selectively tunable oscillator circuit coupled to the energizing coil and which generates a control signal having an oscillation frequency associated therewith for vibrating the dental scaler insert in response thereto. Specifically, the selectively tunable oscillator circuit includes an automatic tuner for automatically altering the oscillation frequency associated with the control signal to be substantially equivalent to the resonant frequency associated with the dental scaler insert in response to the control signal being fed back thereto.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: February 20, 2001
    Assignee: Parkell, Inc.
    Inventor: Michael C. Sharp
  • Patent number: 6186789
    Abstract: A dental tool having a processing section at one end which includes a longitudinally extending lateral face and a transversely extending front face having an abrasive working face located at a distance from the lateral face so as to permit forming a precise marginal edge around a tooth to permit precise positioning of a crown while avoiding deleterious working of the tooth region nearest the stump on which the crown is to be mounted.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: February 13, 2001
    Assignee: Kaltenbach & Voigt GmbH
    Inventors: Burkhard Hugo, Walter Mössle
  • Patent number: 6164968
    Abstract: A three-part ultrasonic dental insert and replacement system used in a handpiece having an induction coil disposed about a well and operably connected to power supply. The three parts include a magnetostrictive element, a velocity transducer and a tip. The magnetostrictive element has a crown at one end which is releasably attached to a distal end of the velocity transducer. The tip is releasably attached to a proximal end of the velocity transducer. The insert can comprise a set of interchangeable tips wherein the velocity transducer and the tips are ultrasonically operable with the coil and the magnetostrictive element. The three-part replacement system comprises a set of the magnetostrictive coils and a set of the velocity transducer elements, as well as the interchangeable tips. The velocity transducer and tip sets include a plurality of transducer-tip combinations ultrasonically operable at the ultrasonic frequencies of the magnetostrictive elements.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: December 26, 2000
    Inventor: James Feine
  • Patent number: 6139320
    Abstract: For ultrasonic preparation of hard or soft tissues or of tissue replacement material a apparatus is proposed comprising a hand piece (10), which includes an ultrasonic vibration generator (16), an ultrasonics deflecting head (28) as well as a tool (36) carried by the output member of the deflecting head. An abrasive treatment medium (48) is supplied to the working region defined between the tool (36) and the material (66) to be prepared. Thus even in places, which are difficult to access, cavities can be produced in dental or bone tissue in a gentle and precise manner.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: October 31, 2000
    Inventor: Rainer Hahn
  • Patent number: 6086369
    Abstract: An ultrasonic dental scaler insert includes a tool coupled to a connecting body which is mechanically coupled to a transducer. When the insert is placed within an ultrasonic dental scaler device handpiece, the transducer produces ultrasonic vibrations which are transmitted to the tool via the connecting body. In order to reduce the noise generated by the operating scaler insert, the connecting body includes an elastomeric material which surrounds a portion of the connecting body. Additionally, a sleeve is provided which surrounds a portion of the connecting body providing a place to grasp the scaler insert during operation. The sleeve includes a bellows section which provides vibrational damping for the insert. Furthermore, the connecting body includes a vibration dampening bushing at an end adjacent the working tool.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: July 11, 2000
    Assignee: Parkell Products, Inc.
    Inventors: Michael C. Sharp, David Wuchinich
  • Patent number: 6062858
    Abstract: In the case of a medical or dental handpiece with a tool for the processing of body tissue or of a substitute material by machining, wherein the tool comprises an, in particular, elongated processing section extending from a base part connected to the handpiece by a detachable connecting device, the processing section having at least one abrasive working face extending in its longitudinal direction and/or transverse thereto, the handpiece has an oscillating drive for the tool, in particular for a frequency in the ultrasonic range, an articulation is assigned to the connecting device, and the axis of the articulation extends approximately in the longitudinal direction of the longitudinal axis of the processing section, approximately at a right angle thereto or in an angular range lying in between.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: May 16, 2000
    Assignee: Kaltenbach & Voigt GmbH
    Inventors: Burkhard Hugo, Walter Mossle
  • Patent number: 6039565
    Abstract: A combined laser and ultrasonic device includes a combination laser and ultrasonic source, a control console and a combined laser and ultrasonic delivery handpiece. The system has three modes of operation: 1) laser energy only, 2) ultrasonic energy only and 3) combined laser and ultrasonic energy. All three modes of operation are controlled by a single foot-operated activation switch, which will operate the laser source, the ultrasonic source or both, depending on which mode the device is operating in according to a mode switch on the control console. The combined laser and ultrasonic delivery handpiece includes an ultrasonic transducer coupled to an ultrasonic vibrating tip, which is mounted in close proximity to a laser delivery wave guide, such as a flexible optical fiber. The combined laser and ultrasonic device can be used to perform a variety of surgical procedures, including an improved method of a laser excisional new attachment procedure (Laser E.N.A.P.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: March 21, 2000
    Inventors: Marilyn M. Chou, Herrick Tam, King J. J. Yu, Ken T. Yu
  • Patent number: 6022217
    Abstract: System for the removal of a defect in a tooth (71), consisting of an oscillatingly movable tool (3) having working surfaces (56) for an abrasive making of a cavity (K) in the tooth, a filling material for filing the cavity (K), an insert (91, 91A) which can be placed into the cavity (K), which with regard to its surface region surrounded by the cross-sectional walls (KW) of the cavity (K) is pre-fabricated adapted to the dimension and shape, and a binding material (92), which hardens or cures, for bonding the insert (91, 91A) with the walls (KW) of the cavity (K).
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: February 8, 2000
    Assignee: Kaltenbach & Voigt GmbH & Co.
    Inventor: Burkhard Hugo
  • Patent number: 6019775
    Abstract: An ultrasonic operation apparatus performs a treatment through the utilization of an ultrasonic oscillation and comprises a handpiece serving as a surgical tool and an apparatus body including a power source unit for supplying electric power to the handpiece. The handpiece is exchangeably attachable to, and detachable from, the apparatus body. The handpiece comprises an ultrasonic oscillation element for generating an ultrasonic oscillation, a probe for transmitting the ultrasonic oscillation which is generated from the ultrasonic oscillation element to a region of interest of a human being and a signal generating unit for generating a signal corresponding to a resonant frequency inherent in the ultrasonic oscillation element and hence the probe.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: February 1, 2000
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Tomohisa Sakurai
  • Patent number: 5980251
    Abstract: A magnetostrictive transducer including a plurality of magnetostrictive laminates each having a first end and a second end. The first and second ends of the laminates include openings. The laminates are arranged in a stacked configuration and bonded together by solder at the first and second ends. At the first and second ends the solder extends through the openings of the laminates forming a solder bar therein. The solder bars bond the laminates together with increased mechanical strength and also provide increased electrical contact between the laminates.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: November 9, 1999
    Assignee: Coltene/Whaledent, Inc.
    Inventors: John Sullivan, Steven Abdelqader
  • Patent number: RE36699
    Abstract: An electric device which removes supragingival and sub-gingival plaque and undesirable debris from the interproximal surfaces between teeth is described. This device utilizes a combination of sonic energy and dental floss which is secured between two tines, the tines being part of a flexible fork which is removable from a powered handle which contains batteries and an electric motor. The electric motor, which is coupled to an eccentrically mounted disc on an output shaft, revolves at sonic frequencies which in turn generates sonic energy that is transmitted to the flexible fork which holds the floss. The sonic energy is synchronized and in tune with the natural resonance frequencies of the fork thereby stimulating the resonance action of oscillating vertical and/or elliptical movement of the fork which in turn imparts cleaning energy to and enhances the cleaning properties of the floss.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: May 16, 2000
    Inventor: Ronald K. Murayama