Hand-held Tool Or Handpiece Patents (Class 433/114)
  • Patent number: 10398452
    Abstract: A powered surgical device for cutting or drilling having a mechanical cutting or drilling assembly, a fluid inlet, and a vacuum source port for connecting to a vacuum source. The vacuum source port is disposed in fluid communication with the fluid inlet. The surgical device is configured and arranged to cause an aerosol generated by the mechanical cutting or drilling assembly to be suctioned into the fluid inlet when the vacuum source port is connected to a vacuum source.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: September 3, 2019
    Inventors: Christopher A. Palmerton, Samantha Bonano, Daniel R. Palmerton, Gregory Pepe, Anthony Lizauckas, III, Kyrylo Shvetsov
  • Patent number: 10159542
    Abstract: Methods and systems for tracking a dental tool within an oral cavity for taking and/or updating of a dental impression are described. In some embodiments, a marker, optionally a magnetic marker, is coupled to position movements of a rotatable dental tool. In some embodiments, detected movements of the marker are used, optionally in combination with other tracking data, to map contours which a portion of the rotatable dental tool follows during interaction with a dental surface. Optionally, the interaction occurs during grinding, drilling, and/or other procedures; which may be preparatory, for example, to the manufacture and/or fitting of a dental prosthetic.
    Type: Grant
    Filed: May 1, 2016
    Date of Patent: December 25, 2018
    Assignee: DENTLYTEC G.P.L. LTD.
    Inventors: Benny Pesach, Georgy Melamed, Blanc Zach Lehr, Ygael Grad, Amitai Reuvenny
  • Patent number: 9949803
    Abstract: Medical or dental instruments having a lighting device, manufacturing methods for such instruments and various lighting devices having an optical semiconductor element are described. The lighting devices have, for example, a body, at least one radiation-emitting surface on a radiation-emitting end of the body and at least one fluid channel which is provided in the body and connects at least one opening which is provided on the radiation-emitting end to one or more fluid sources for dispensing fluid. The lighting devices have, for example, a hollow metallic sleeve, a transparent window for emission of electromagnetic radiation and a socket on which at least one optical semiconductor element is arranged. The socket is made of a ceramic, glass ceramic or glass material, and is connected to the hollow metallic sleeve by a material comprising metal and glass.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: April 24, 2018
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventors: Christoph Heinrich, Thomas Jindra
  • Patent number: 9383018
    Abstract: A cartridge seal for sealing a space between a housing and a rotatable shaft includes a rotary sealing member having an inner surface defining a bore for receiving the shaft and a circular outer flange extending radially outwardly from and circumferentially about a central axis, the outer flange having a radial sealing surface. A static seal assembly is disposed about the rotary member and includes an annular casing coupleable with the housing and an annular static sealing member disposed within the casing and having a radial sealing surface engageable with the rotary member sealing surface to form a sealing interface. A biasing member axially biases at least a portion of the static sealing member toward the rotary member flange. An annular collar is disposed within the casing and axially retains the rotary member within the casing such that the seal assembly is mountable on a shaft as a single unit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 5, 2016
    Inventors: Tyler James Ryther, Raymond Lee Chaplin
  • Patent number: 9259519
    Abstract: Embodiments of the invention are directed to a medical device with a handpiece that provides enhanced comfort of use, maneuverability, and for a variety of hand-held options to the user. Embodiments of the invention include handpieces that include a grip panel comprised of a friction-enhancing material to facilitate gripping of the handpiece by an operator. In addition, embodiments of the invention include handpieces having a generally symmetrical configuration in order to facilitate grasping by an operator's left or right hand.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: February 16, 2016
    Assignee: Allegiance Corporation
    Inventors: Adam S. Fedenia, Peter L. Visconti, Michael J. Milella, Jr.
  • Publication number: 20150125815
    Abstract: Surgical system, in particular a dental system including a surgical instrument, in particular a dental instrument and a device for controlling the electronic instrument. The device for controlling the electronic instrument includes a first electronic module. The instrument includes a rotary motor for driving the tool and a second electronic module. The rotary motor of the instrument is electrically powered by the first electronic module of the control device through the first electrical conductors dedicated to supply the rotary motor. The instrument is powered and/or electrically controlled by the first electronic module of the control device only through the second electrical conductors distinct from the first electrical conductors. The system also includes a management module of the second electrical conductors for sending on the second electrical conductors a number of signals larger to a number of second electrical conductors.
    Type: Application
    Filed: June 6, 2013
    Publication date: May 7, 2015
    Inventor: Jean-Pierre Voillat
  • Patent number: 8961177
    Abstract: A medical or dental handpiece which has an outer sleeve, a tool-holding sleeve for holding a treatment tool, wherein the tool-holding sleeve has a central axis about which the tool-holding sleeve can be rotated and wherein the tool-holding sleeve can be induced to a stroke motion by a driveshaft of the handpiece, and an adjusting device, which is designed to secure the tool-holding sleeve selectively in a rotational position or to allow a free rotatability of the tool-holding sleeve, wherein the adjusting device has a fixation element, which secures or releases the tool-holding sleeve and at least one adjusting element, which is at least operatively connected to the fixation element, wherein the adjusting element is movable substantially in parallel with the central axis of the tool-holding sleeve.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: February 24, 2015
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventor: Josef Schwarzbraun
  • Patent number: 8936465
    Abstract: A method and device for programming a cordless handpiece used for root canal treatment and having a first memory and a tool holder for a treatment tool are described. The method includes providing a first data volume having a plurality of data sets in a second memory separate from the first memory, each of the data sets comprising at least one parameter assigned to the cordless handpiece and/or to the operable tool, selecting at least some of the data sets from the first data volume in the second memory, transmitting the selected data sets from the second memory to the first memory of the handpiece, and selecting a data set from the updated first memory for operation of the handpiece.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: January 20, 2015
    Assignee: W&H Dentalwerk Bürmoss GmbH
    Inventors: Gerald Helfenbein, Stefan Putz, Rainer Schröck
  • Patent number: 8931960
    Abstract: A bearing assembly (20) for use in a medical, surgical, or dental handpiece (10) that enables spindle rotation for a supported rotary tool (36) at high speeds. The bearing assembly (28) incorporates annular gap shields (50, 54) at each axial end to prevent contaminate ingress and to retain lubricating grease within the bearing assembly (28) to avoid re-lubricated after each use or sterilization cycle.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: January 13, 2015
    Assignee: The Timken Company
    Inventors: Frank J. Damato, Joseph P. Greathouse, Paul J. Carabello, Ryan D. Evans, Martin S. Galehouse, Steven R. Morel, John A. Zannotti
  • Publication number: 20140329197
    Abstract: An implant system can include a first rotatable flexible shaft comprising a biocompatible material and configured to be used as an implant for placement in the human body, the implant including an implant driving element positioned at a proximal end; a second rotatable flexible shaft including a cutting drill positioned at a distal end and a drill driving element positioned at a proximal end; and a surgical tool capable of being connected, in the alternative, to the drill driving element for forming a recessed surgical site and to the implant driving element for placing the implant in the recessed surgical site.
    Type: Application
    Filed: May 6, 2014
    Publication date: November 6, 2014
    Applicant: Zimmer Dental, Inc.
    Inventors: Jeffrey Bassett, Michael Scott Collins
  • Patent number: 8870569
    Abstract: The medical or dental handpiece comprises a rotary part and at least one roller bearing which is provided for bearing support of the rotary part. The roller bearing has a bearing inner ring and a bearing outer ring, each having a raceway for the at least one rolling element arranged therebetween. The rotary part is mounted on at least one bearing ring on the side having the raceway for the at least one rolling element.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: October 28, 2014
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventors: Andreas Rudholzer, Stefan Rusch, Gernot Ploy, Gerhard Hochradi
  • Patent number: 8845197
    Abstract: The present invention relates to dental machining apparatus (1) for blanks (3) comprising a tool spindle (2) having an axis of rotation (2.8) and mounted in a bearing housing (1.2) disposed on the machine housing side. A force sensor (5) is also provided, which is disposed between the tool spindle (2) and the bearing housing (1.2) for the purpose of detecting the machining force acting on the tool spindle (2), wherein the tool spindle (2) can be supported against the bearing housing (1.2) directly or indirectly via the force sensor (5).
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 30, 2014
    Assignee: Sirona Dental Systems GmbH
    Inventor: Thomas Hasenzahl
  • Publication number: 20140212833
    Abstract: A coupling device for detachably connecting a medical or dental instrument to a drive unit or a supply hose for transfer of at least one of data, energy, a driving movement and a working medium between the drive unit or the supply hose and the instrument comprises a first coupling element and a second coupling element. One of the coupling elements comprises a coupling recess and the other comprises a coupling protrusion insertible therein. One of the coupling elements comprises a positioning element and the other comprises an indentation into which the positioning element can be inserted to position the coupling elements in a defined angular position about a shared axis. One of the coupling elements comprises a memory unit for storage of data and the other comprises a transfer unit, so that data can be transferred from the memory unit by the transfer unit to the other coupling element.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: W&H Dentalwerk Bürmoos GmbH
    Inventors: Michael Mangelberger, Christof Baier, Wolfgang Tannebaum
  • Patent number: 8734153
    Abstract: An intelligent dental handpiece control system is disclosed. The handpiece includes a sensor which detects a vibration, sound, force or torque frequency/time signal produced by the handpiece in use and signal processor which produces or determines secondary signal characteristics such as the handpiece torque, force or angular velocity. A controller analyzes the secondary signal characteristics and produces a control signal which controls or stops the angular velocity of the dental handpiece in order to avoid overdrilling of healthy tooth material or damaging the nerves in the jaw during dental implant operations. The controller may also provide a warning signal to the user and/or control the angular velocity of the handpiece.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 27, 2014
    Assignee: Simon Fraser University
    Inventors: Siamak Arzanpour, Vahid Zakeri
  • Publication number: 20140030673
    Abstract: A dental handpiece capable of withstanding a higher torque load includes a driving source which rotates a first rotating shaft 3 which is supported rotatably in a rear casing 2R, which transmits rotation to a second rotating shaft 9 which is supported rotatably in a front casing 2F. First and second bearings 12,14 are disposed at a predetermined interval in a jacket 8 fixed in the front casing 2F to rotatably support the second rotating shaft 9, and a third bearing 13 is disposed between the first and second bearings 12,14. The third bearing 13 reduces the whirling of the second rotating shaft 9, thereby preventing the wearing and chipping of the teeth of gears caused by a shift of meshing positions between a first gear 5 and a second gear 10 and a shift of meshing positions between a third gear 11 and a fourth gear 73.
    Type: Application
    Filed: November 17, 2011
    Publication date: January 30, 2014
    Applicant: NAKANISHI INC.
    Inventors: Masanori Mizunuma, Takao Kimura, Keita Yokochi
  • Patent number: 8597022
    Abstract: A dental tool including a dental prophy angle and a dental prophy angle adapter is provided. A dental prophy angle includes a housing and a rotor. The dental prophy angle adapter can include a drive shaft with a tip. The drive shaft of the adapter can be coupled to a gear at the same end of the tip with the rotor of the prophy angle being configured to receive the tip. Further, a slidable sleeve can extend over a portion of the drift shaft so that the slidable sleeve becomes automatically retracted upon engaging a shoulder of the housing resulting in the gear of the drive shaft being positioned beyond the end of the slidable sleeve.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: December 3, 2013
    Assignee: Angstrom Manufacturing, Inc.
    Inventors: Chris J. Carron, David G. Grither
  • Patent number: 8597388
    Abstract: In one embodiment, a system for making a dental restoration is provided. The system includes a machine unit for processing a dental material to form the dental restoration, and a control unit for controlling the operation of the machine unit. An air channel for discharging a process-originated material from the machine unit provides an air connection between the machine unit and the control unit. Certain embodiments of invention are advantageous in that they help to increase the reliability of the machining operation.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: December 3, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Michael K. Schaaf, Christian A. Richter, Sebastian Guggenmos, Günter Hertlein, Erich Sendelbach
  • Patent number: 8333588
    Abstract: There is disclosed a medical or dental hand-piece element comprising a coupling mechanism for a detachable connection of the hand-piece element to a drive unit, a tool receptacle that is or can be connected to the hand-piece element, and a drive element for transmitting a driving movement from the drive unit to the tool receptacle so that the tool receptacle can be set into a working movement, wherein the drive element comprises at least one rotatable shaft, and a generator for converting mechanical energy into electric energy, wherein the generator can be driven by the at least one rotatable shaft of the drive element.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: December 18, 2012
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventors: Stefan Putz, Stephan Rauchenzauner, Norbert Schatz, Karl Schmiedlechner, Hannes Wagner
  • Publication number: 20120107762
    Abstract: A method and corresponding system for operating a dental handpiece, wherein the handpiece comprises a motor for driving a tool. the method comprises (a) sequentially capturing values of a physical parameter, which—at least approximately—represent the power or energy fed to the motor, (b) forming an integration value by integrating the values captured in (a), and (c) automatically reducing a power or energy fed to the motor if the integration value formed in (b) exceeds an upper threshold value. The integration value formed in (b) represents a measure of the power integrated over time and can thus be used at least approximately as a measure of the temperature of the instrument. The automatic reduction in the power or energy fed to the motor performed in (c) can therefore effectively act against a further increase in temperature or allow cooling if the temperature of the instrument exceeds an upper threshold value.
    Type: Application
    Filed: July 1, 2010
    Publication date: May 3, 2012
    Inventors: Johannes Sauter, Hans Heckenberger, Bernd Gugel
  • Publication number: 20120077147
    Abstract: The present invention relates to an instrument used to insert microimplants and more particularly, to a microimplant insertion wrench that has a head on the instrument that allows the head to swivel and rotate upon the handle. The end of the head of the instrument comprises a receptacle that receives and retains a microimplant. The head of the implant wrench can be fixed into a predetermined angulation with the aid of a set screw. Microimplants can be inserted by a counter clockwise rotation of the knurled knob on the head of the instrument, and implants can be removed by clockwise rotation of the knurled knob on the head of the implant wrench.
    Type: Application
    Filed: September 29, 2011
    Publication date: March 29, 2012
    Inventor: John T. Kalange
  • Patent number: 8137102
    Abstract: A fluid-operated medical or dental handheld element is disclosed, having a connecting device for connecting the handheld element to a fluid source so that a first impeller can be induced to rotate by a fluid stream to cause a tool to execute a driving motion, a fluid conducting device arranged between the connecting device and the first impeller for conveying a fluid stream away from or toward the first impeller, and a generator for generating electric power. The generator includes a second rotatable impeller that can be driven by at least a substream of the fluid stream conveyable in the first fluid conducting device. One result is more constant generation and output of power by the generator independent of the rotational speed of the first impeller, thereby insuring a more constant power supply to a power consuming device connected to the generator.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: March 20, 2012
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventors: Stephan Rauchenzauner, Karl Schmiedlechner
  • Patent number: 8118594
    Abstract: A dental handpiece (1) includes mechanical components, in particular, a tool-holder assembly for the attachment and for the rotational driving of a dental instrument about a drive axis (6) and an assembly for the transmission of such movement. The mechanical components are mounted in the interior of a body (2) having a head (4) and a handle (3). The mechanical components of the handle and the head of the handpiece are electrically connected by an elastic and electrically conducting connecting device.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: February 21, 2012
    Assignee: Micro-Mega International Manufactures
    Inventors: Jacques Pernot, Jean-Claude Boinot
  • Patent number: 8109762
    Abstract: A dental handpiece carries a drill and drives it in relative motion in a direction of penetration. The handpiece includes a body with a proximal end and a distal end, a removable head connected to the body's distal end, able to hold the drill, abutment means fixed on the dental handpiece by fixation means and able to limit the depth of penetration of the drill in the body of a patient. The abutment means, protruding from the dental handpiece, are fixed and locked on the dental handpiece by locking means which are actuated by the simple movement of joining the head to the body.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: February 7, 2012
    Assignee: Anthogyr
    Inventor: Hervé Richard
  • Publication number: 20110256502
    Abstract: A dental wrench device to loosen and extract teeth, comprising a handle with a fixed tapered jaw. A moveable jaw is also coupled to the handle. The tapered jaw is positioned along the root of a tooth selected to be extracted. The moveable jaw has a blunt contoured shape configured to grasp the gum and bone on the opposite side of the selected tooth at a level below the crown of the tooth. The device is applied and tightened around the selected tooth by turning a thumbscrew, or other jaw movement interface, that moves the moveable jaw end closer to the fixed tapered jaw end until the tooth is tightly gripped by the device. Once the wrench is locked into position, force may then be applied to extract the tooth. The device may also incorporate an optional force feedback gauge to warn the operator when excessive force is being applied.
    Type: Application
    Filed: September 3, 2010
    Publication date: October 20, 2011
    Inventor: Howard Ian Katz
  • Publication number: 20110183284
    Abstract: A dental clinical apparatus having a function which conventional instruments for dental treatment have not had and having a novel constitution. The dental clinical apparatus includes a syringe which has a fluid jetting system for dental treatment and a plasma jet applying means for producing a plasma jet from the end by allowing a low-frequency high-voltage power supply to apply a low-frequency high voltage between electrodes on the outer peripheral surface of a rare gas tube through which a rare gas having a low dielectric breakdown voltage under the atmospheric pressure is flowed, and thereby causing electrical discharge.
    Type: Application
    Filed: July 17, 2009
    Publication date: July 28, 2011
    Inventors: Michizo Yamanaka, Tsuneo Kawahara, Katsuhisa Kitano, Satoshi Ikawa
  • Publication number: 20110177472
    Abstract: Disclosed is a trephine drill for an implant. The trephine drill for the implant includes: a perforating body which comprises a first end part provided with a cutter for perforating the alveolar bone and a second end part formed with a through hole; and a rod body which couples with the perforating body to move close to and apart from the first end part of the perforating body toward the through hole of the perforating body and adjusts a perforation depth when perforating the alveolar bone. With this, not only an alveolar bone is precisely perforated at a preset depth, but also an alveolar bone piece, generated when perforating the alveolar bone, is easily removed from inside of a perforating body.
    Type: Application
    Filed: July 6, 2009
    Publication date: July 21, 2011
    Inventor: Samuel Soonho Lee
  • Publication number: 20110065060
    Abstract: The present invention provides methods for moving a tooth to a desired position within a patient's mouth using orthodontics including perforating tissue in the oral cavity sufficient to induce an inflammatory response. The perforations may be made in any area of the maxilla or mandible, and any number of perforations may be made that are preferably 0.5 to 1.5 mm diameter, and preferably 1 to 3 mm deep. The invention also provides a device that may be used in conjunction with slow-speed rotary instruments or with manual drivers for providing the perforations. The device has a drill that makes the perforations and a stop that prevents the drill from penetrating the jaw bone beyond a predetermined depth. The invention also provides a kit that supplies the professional with the necessary components in a sealed container to carry out the osteoperforations. The kit may include hand held and rotatory perforating devices, anesthetic, and a soft tissue punch.
    Type: Application
    Filed: August 11, 2010
    Publication date: March 17, 2011
    Inventors: Cristina C. Teixeira, Mani Alikhani
  • Publication number: 20110059418
    Abstract: A bearing assembly (20) for use in a medical, surgical, or dental handpiece (10) that enables spindle rotation for a supported rotary tool (36) at high speeds. The bearing assembly (28) incorporates annular gap shields (50, 54) at each axial end to prevent contaminate ingress and to retain lubricating grease within the bearing assembly (28) to avoid re-lubricated after each use or sterilization cycle.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 10, 2011
    Inventors: Frank J. Damato, Joseph P. Greathouse, Paul J. Carabello, Ryan D. Evans, Martin S. Galehouse, Steven R. Morel, John A. Zannotti
  • Publication number: 20100266983
    Abstract: A screw tap type device for loosening or extracting a wisdom tooth is provided. The device comprises a screw tap with a plurality of longitudinal cavities in the external screw thread, creating cutting teeth which create a strong frictional grip with a rough dentine wall of a previously drilled tapered tunnel of a wisdom tooth. A user can then twist the device to exert axial bodily dislocating force for easy loosening or extraction of the wisdom tooth.
    Type: Application
    Filed: March 29, 2010
    Publication date: October 21, 2010
    Inventors: Tze Chuen Ng, Sui Man Ko
  • Publication number: 20100196844
    Abstract: A drill for sinus membrane lift includes a contact surface for coming in face contact with sinus membrane, the contact surface having a curved periphery, and a bone-maintaining area connected to the contact surface for storing and discharging drilled bone fragments. The bone-maintaining area includes a first inside wall and a second inside wall connected to the first inside wall, the first inside wall oriented in a drilling direction, and the second inside wall opposite the first inside wall. The first inside wall has a drilling surface and is formed higher than the second inside wall so that the drilling surface is exposed in the drilling direction. The front end of the head comes into face contact with the sinus membrane at a wide area to prevent the sinus membrane from being torn or damaged even if the head completely penetrates the maxilla and contacts the sinus membrane.
    Type: Application
    Filed: July 21, 2008
    Publication date: August 5, 2010
    Inventor: Young Ku Heo
  • Publication number: 20100136503
    Abstract: The medical or dental handpiece comprises a rotary part and at least one roller bearing which is provided for bearing support of the rotary part. The roller bearing has a bearing inner ring and a bearing outer ring, each having a raceway for the at least one rolling element arranged therebetween. The rotary part is mounted on at least one bearing ring on the side having the raceway for the at least one rolling element.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 3, 2010
    Inventors: Andreas Rudholzer, Stefan Rusch, Gernot Ploy, Gerhard Hochradi
  • Publication number: 20100112515
    Abstract: A dental handpiece having an embossed non-slip grip positively wrapping about the periphery of the handpiece body at a predetermined location for gripping with the fingers.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventor: Chun-Leon CHEN
  • Publication number: 20100112514
    Abstract: A wireless dental handpiece includes a handpiece body that houses a rechargeable battery and a charging loop, and a charging socket that provides a power supply to the charging loop to charge the rechargeable battery upon insertion of the rear end of the handpiece body into the charging socket so that the dentist can use the dental handpiece conveniently, avoiding cable tangling.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventor: Chun-Leon Chen
  • Patent number: 7686614
    Abstract: A dental handpiece includes a body having a first portion and a second portion, the first and second portions disposed at an ergonomic angle to each other. A drive gear extends from the second portion toward the first portion. The drive gear has a first axis of rotation and rotatably drives at least one driven gear having a second axis of rotation. The at least one driven gear is operatively connected to a bur disposed in the first portion to rotatably drive the bur about a third axis of rotation. The drive gear and the at least one driven gear do not include a taper gear or a face gear.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: March 30, 2010
    Assignee: Dentsply International Inc.
    Inventor: Zdzislaw W. Korytkowski
  • Publication number: 20100047738
    Abstract: A device for forming a bone bed for dental implants having a head composed of crystal of partially stabilized zirconium dioxide with a nanostructure having a crystallographic axis that coincides with the axis of the bone bed forming device. The head has cutting elements formed as a rotatable plate. The plate has two broad facets formed by circular arcs that are convex relative to the axis of bone bed forming device. Transition from one of the convex circular arc to another convex circular arc is smoothed by circular arcs that are concave relative to the axis of bone bed forming device. Grooves form first and second cutting members with narrow facets of the plate. The head has an end part shaped as a truncated sphere possessing a recess formed by two planes arranged at an angle of 90° relative to each other and passing through the truncated sphere center and two points belonging to two diagonally arranged plate ribs.
    Type: Application
    Filed: September 23, 2009
    Publication date: February 25, 2010
    Inventors: Mikhail A. Borik, Vladimir P. Voitsitskiy, Maria A. Vishniakova, Elena E. Lomonova, Viacheslav V. Osiko, Lev V. Chilikin
  • Publication number: 20100035203
    Abstract: In a dental treatment instrument with an elongate grip sleeve, a drive unit arranged in the grip sleeve, and a coupling device which is located at the front end of the grip sleeve and with which a movement generated by the drive unit is transferred to a treatment tool to be connected releasably to the treatment instrument, the coupling device is designed like a sleeve and has a first section for receiving a tapering peg-like coupling area of the tool shaft, and a second section which also interacts with the tool shaft to provide a securing means acting in the axial direction, wherein the length of the first section of the coupling device is at least as great as the length of the second section.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 11, 2010
    Inventor: Walter Moessle
  • Patent number: 7575432
    Abstract: The invention concerns a handpiece for a surgical or dental tool (3), which can be inserted in the head of the handpiece (1) through an insertion hole (14) into a tool holder (2) and is rotationally supported by means of two axially separated bearings (12, 13), with positive torque transmission (8) to the tool (3) by the drive (9) installed in the handpiece, such that the tool possibly has a longitudinal bore (6) for supplying cooling liquid to the work site, and the handpiece (1) possibly has a short, fixed feed tube (7), which extends into the longitudinal bore and is sealed from the tool (3). To increase the torque that can be transmitted, the invention is characterized by the fact that the torque transmission (8) occurs in the region of the bearing (13) that is adjacent to the insertion hole (14). The invention also concerns the development of suitable tools.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: August 18, 2009
    Assignee: W & H Dentalwerk Bürmoos GmbH
    Inventor: Gerald Helfenbein
  • Patent number: 7556498
    Abstract: Medical, in particular dental, contra-angle handpieces for driving a dental instrument connected to the contra-angle handpiece with shafts arranged in the contra-angle handpiece for the transmission of the drive movement to the instrument. In order to achieve a reduction of sound emission and a reduction of the manufacturing and assembly costs while still incorporating the curvature of the outer sleeve of the contra-angle handpiece and the advantages which this entails, the contra-angle handpiece is equipped with a single-piece shaft which is essentially centered at the proximal end and the distal end of the outer sleeve, but runs eccentrically in a section of the outer sleeve between the proximal end and the distal end. The curvature of the outer sleeve of the contra-angle handpiece is in the range of about 8° to about 16°, and in some implementations, in the range of about 10° to about 14°.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: July 7, 2009
    Assignee: W&H Dentalwerk Bümoos GmbH
    Inventor: Norbert Schatz
  • Patent number: 7488173
    Abstract: A hand held instrument for carrying out some function on a work piece. The instrument is a handpiece that is held by the user and includes a working element at the distal end of the handpiece for working on the work piece. There is a source of power that activates the working element by providing power thereto in various forms. There is also a pressure sensor that senses the pressure between the working element and the handpiece. In one embodiment that pressure sensor senses a predetermined pressure in order to couple the power source to the working element for activating the working element. In another embodiment, the pressure sensor senses a reduction in pressure between the working element and the handpiece to illuminate an indicator light.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: February 10, 2009
    Inventor: Antoine Bochi
  • Patent number: 7448870
    Abstract: The handpiece includes at the front a collet arranged for strongly gripping the shank of a removable tool housed in guide bores. The collet includes two or several arms attached to an annular part of the collet to grip the tool shank. Preferably, the collet arms are levers each having a support surface which is far from the jaw and on which a gripping mechanism exerts a force which is multiplied by the lever. The gripping mechanism includes a sliding sleeve having an inner conical surface which produces the force on the collet levers via balls. This arrangement enables a smaller gripping spring to be used, or such spring to be omitted. The balls of the releasing mechanism are guided in helical slots having a flexible lateral strip which holds the gripping mechanism in position via a snap fit.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: November 11, 2008
    Assignee: Bien-Air Holding S.A.
    Inventor: Luc Maître
  • Publication number: 20080261170
    Abstract: A medical or dental handheld element has a rotatably arranged rotary part, at least one roller bearing for bearing support of the rotatably arranged rotary part, the roller bearing having at least one rotatable roller bearing part that is co-rotational with the rotary part and at least one stationary roller bearing part that is stationary in relation to the rotary part, and an anti-twist device or anti-rotation element provided to restrict the stationary roller bearing part from rotating. The anti-twist device comprises a polygonal, generally arc-shaped, open metallic anti-twist device. A handheld element with this anti-twist device is less sensitive to the effects of sterilization or cleaning processes. Also disclosed is a method for manufacturing such a handheld element.
    Type: Application
    Filed: April 22, 2008
    Publication date: October 23, 2008
    Inventor: Gernot Ploy
  • Publication number: 20080227054
    Abstract: An angled dental shaft receptacle is provided for operating rotating instruments with an angled shaft. The angled shaft receptacle has a driver pin, and the driver pin is connected to the angled shaft of the instrument by a planar contact during operation. The rotating instrument is preferably a dental instrument.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Inventor: Jan-Dirk REIMERS
  • Patent number: 7416410
    Abstract: The invention relates to a medical or dental medical handpiece (3) having an elongate shaft (13), which has in its front end region a tool holder (5) having a lateral insertion opening (5a) for a tool (6), and having a rearward and a forward shaft section (13a, 13b) which include an obtuse angle (W2) which is open to the side away from the insertion opening (5a), wherein in the shaft sections (13a, 13b) there is rotatably mounted in each case a drive shaft section (53a, 53c), which stand in driving connection with one another by means of gears meshing with one another, and wherein the forward shaft section (13b) stands in driving connection with the tool holder (5) by means of gears (58, 59) meshing with one another.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: August 26, 2008
    Assignee: Kaltenbach & Voigt GmbH & Co. KG
    Inventor: Bernhard Kuhn
  • Publication number: 20080131835
    Abstract: There is disclosed a medical handpiece, in particular a dental handpiece, having a lighting device which comprises at least one optical semiconductor element, whereby the at least one optical semiconductor element is arranged at least partially in the interior of the handpiece and is detachably connected to the handpiece. On account of this design, it is possible for the user to easily connect the handpiece to an optical semiconductor element that is needed for a certain treatment and has, for example, a certain desired power level and/or emits a desired wavelength. The handpiece may thus be used for different applications without requiring any additional components such as switches, etc., that take up space. The outside dimensions of the handpiece remain substantially unchanged in comparison with known handpieces.
    Type: Application
    Filed: November 27, 2007
    Publication date: June 5, 2008
    Inventors: Norbert Schatz, Karl Schmiedlechner
  • Publication number: 20080026342
    Abstract: The stomatological tip comprises a head accommodating a turbine with a means for holding a stomatological instrument and at least one hole for gas admission to the turbine, a tip body having a socket for the head to receive, a gas admission duct communicating with a gas supply line. The socket for the hole is capable of providing a complete revolution of the head, while the means for holding a stomatological instrument appears as a collet holder having a control push-button. The tip is furnished with a valve, an intermediate duct provided in the head, an additional duct provided in the tip body and having its outlet communicating with the inlet of the intermediate duct, the clamping blades of the collet holder are accommodated inside the head and the control push-button is accommodated inside the head so as to perform reciprocating motion and have effect on the clamping blades of the collet holder.
    Type: Application
    Filed: December 17, 2003
    Publication date: January 31, 2008
    Inventor: Yury Mikhailovich Rogovsky
  • Publication number: 20080014550
    Abstract: Operation of a handpiece is sensed, such as by detecting temperature and/or vibration associated with one or more of the bearing rings supporting the turbine in the handpiece. When operation exceeds a threshold, a visual or audible indication is provided, and power to the turbine may be interrupted. The sensor(s) may be built into the handpiece, or be part of a removable girdle placed on the handpiece. Typically, the handpiece is used for dental or medical applications.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 17, 2008
    Applicant: Henry Schein, Inc.
    Inventors: Anthony Michael Alyn Jones, O. Napoleon Monroe
  • Publication number: 20070287127
    Abstract: A retention system connects a dental instrument to a dental component and maintains contact between them during installation of the latter in the oral cavity. The instrument includes a shaft having a shaped driver bit at one end. The dental component includes a head configured to be engaged by the driver bit, a shank that extending outwardly away from the head and a plurality of threads thereon. In a first embodiment, the system includes a clip that is frictionally engaged with the shaft of the instrument and snap fitted to the head of the dental component. In a second embodiment, the system includes a vacuum source operationally connected to a passageway in the dental instrument. A vacuum is generated at the driver bit tip which retains the dental component on the instrument.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 13, 2007
    Inventors: Allan Schaffran, Andy Doug-Lun Wong, Robert G. Dickie
  • Patent number: 7214060
    Abstract: At the front, a handpiece (1) has a clamp (10) fitted to tightly grip the shank of a removable tool housed in guide holes (23, 25). The clamp has two or more levers (26) attached to an annular section (22) of the clamp by elastic joints (27), each of which has a gripping jaw (20) to grip the tool shank. On each lever, the gripping jaw (20) is located much closer to the joint (27) than to a supporting surface, on which a tightening mechanism (17) exerts a centripetal force so that the lever multiplies this force. The tightening mechanism preferably has a sliding sleeve (40) having a conical inside surface (44), which produces the force at the levers of the clamp by means of balls (45) housed in the holes of a hollow rotatable shaft (11).
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: May 8, 2007
    Assignee: Bien-Air Holding S.A.
    Inventor: Luc Maître
  • Patent number: 7179087
    Abstract: The invention relates to a medical or dental-medical treatment which at its rearward end has a coupling element for coupling on to a matching coupling element of a flexible supply line, and in its forward region has a holder device for a tool, the handpiece being of a rearward and a forward handpiece section which are connected with one another by means of a plug-in connection and are fixed on one another by means of a latching device which has a latching arm extending approximately axis-parallel and which is transversely elastically bendable, which latching arm is arranged on the one plug-in connection part and is latched in its free end region with a latching element arranged on the other plug-in connection part . For the purpose of improving the connection between the rearward and the forward handpiece section the latching device at the same time axially fixes an insert part of the handpiece, which insert part sits in a plug-in recess of the one and/or of the other plug-in connection part.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: February 20, 2007
    Assignee: Kaltenbach & Voigt GmbH & Co. KG
    Inventor: Bernhard Kuhn
  • Patent number: 7156659
    Abstract: A driven appliance, such as a contra-angle handpiece for surgical instruments, in particular for dental surgery, includes a handle, a neck and a head for receiving an instrument. The handle and the neck of the contra-angle handpiece each receive a drive shaft, respectively, an input shaft and an output shaft, which are linked to each other by a gear train. The input shaft and the output shaft are slidingly mounted in their respective bodies, which forms a sheath for the two shafts. The shafts are maintained and supported on stops arranged on the corresponding sheathes through a single elastic element which is housed in the bend linking the handle to the neck.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: January 2, 2007
    Assignee: Micro-Mega International Manufactures
    Inventor: Jacques Pernot