Class / Patent application number | Description | Number of patent applications / Date published |
433126000 | Having means facilitating assembly or disassembly of tool or handpiece | 22 |
20090047625 | Unitized modular ultrasonic handpiece cable connector - 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. | 02-19-2009 |
20090087814 | DENTAL HANDPIECE FOR ROOT CANAL TREATMENT AND METHOD - A dental handpiece for root canal treatment comprises an outer sleeve, a connecting device for connecting the handpiece to a control and analyzing unit, a measurement circuit having a power source and to a drive unit, an electrically conducting tool receptacle and an electrically conducting driving device, wherein the tool receptacle and the driving device are mechanically and electrically connected together so that a driving motion generated by the drive unit can be transmitted via the driving device to the tool receptacle and electrical measurement signals can be transmitted between the driving device and the tool receptacle. A first connection is provided for transmitting the driving motion. A second electrically conducting connection, which may comprise sliding contacts, is provided for transmitting the electrical measurement signals. With separate connections, an improved signal transmission and in particular a low loss of measurement signals of the root canal length measurement during the signal transmission are achieved. | 04-02-2009 |
20090220911 | Adjustable dental tool drive arrangement - The invention relates to an improved dental tool drive arrangement for a hand-piece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation. | 09-03-2009 |
20090269717 | Angles hose connection for dental handpiece - A dental handpiece having a distal end including an attachment for assembly of a removable workpiece and a handpiece body intermediate a proximal end and the distal end. The handpiece extends in a substantially axial direction. A coupler is included having a cylinder portion and a supply-end portion, the cylinder portion being assembled into the handpiece extending in the axial direction toward the distal end. The cylinder portion includes at least one seal that interfaces with an interior of the body so as to isolate a portion of the body interior into at least one distinct chamber. The supply-end portion of the coupler extends from the proximal end of the handpiece body at an angle from the axis. The supply-end portion also includes a plurality of outlets, the at least one distinct chamber in fluid communication with one of the outlets of the plurality of outlets. | 10-29-2009 |
20110081624 | CORDLESS DENTAL HANDPIECE, SYSTEM INCLUDING A CORDLESS DENTAL HANDPIECE, AND METHOD OF CONNECTING A CORDLESS DENTAL HANDPIECE - A cordless dental handpiece, a system including a cordless dental handpiece, and a method of connecting a cordless dental handpiece are disclosed. The cordless dental handpiece includes a first module and a second module. The second module is configured to detachably engage the first module. The second module includes a battery compartment. | 04-07-2011 |
20110250561 | DENTAL DRILL FOR FLAPLESS IMPLANT SURGERY - A dental drill is intended for performing flapless implant surgery by being mounted on a drill device. The dental drill comprises a drill body and a mounting portion for mounting the drill body to a drill device. The drill body comprises: a cutting part for providing a side blade having a certain length from the cutting edge, and a body portion with limited cutting ability. Tooth bone can be easily removed because of the cutting part at the end portion of the drill body. Also, gums can be protected because the body portion is not only formed with the cutting part integrally, but the side blade either does not exist or is removed. | 10-13-2011 |
20110269101 | Electric Motor Arrangement for use in a Medical, in Particular in a Dental Handpiece and Dental Handpiece Part - The invention relates to an electric-motor arrangement for a medical, in particular dental, hand piece which has a motor housing ( | 11-03-2011 |
20110281232 | MEDICAL OR DENTAL HANDPIECE - A medical or dental handpiece comprises a grip sleeve, a handpiece head, an engagement element and a retaining member. The handpiece head comprises a head housing and a hollow connecting sleeve extending from the head housing for connecting the handpiece head to the grip sleeve. The engagement element has a first end positionable to extend through the grip sleeve and a second end engageable within an opening in the handpiece head. The retaining member is spaced proximally from the handpiece head. The first end of the engagement element is connectable with the retaining member to secure the second end of the engagement element against the handpiece head and to retain the grip sleeve around the engagement element and against the handpiece head. | 11-17-2011 |
433127000 | Means to releaseably grip tool | 14 |
20090075232 | COUPLING SYSTEM FOR HAND INSTRUMENTS FOR DENTAL OR SURGICAL USE - A coupling system for shafts of the lower gripper mechanism and the upper motor mechanism of an instrument includes: —a hollow shaft whose upper end can couple to the lower end of the motor mechanism shaft and whose lower end can slide around the upper end of the gripper mechanism shaft; a movable pin connecting the lower end of the hollow shaft with the upper end of the gripper mechanism shaft; a spring; two diametrically opposed oblong windows serving to limit the path of the pin such that, for the hollow shaft and the gripper mechanism shaft, a first relative position wherein they are separated maximally and a second relative position wherein they are approached maximally are defined; and a holder whose length is such that, only in the second position, it allows the pin to appear allowing connection separation of the coupling system and the gripper mechanism, respectively. | 03-19-2009 |
20100221679 | Adjustable tool drive arrangement - The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation. | 09-02-2010 |
20110129795 | DEVICE FOR THE AXIAL RETENTION OF A DENTAL INSTRUMENT EXTREMITY HAVING AN AXIS CROSSED BY AT LEAST ONE LOCKING PIN - The invention relates to a device for axial retention of a dental instrument shank and for transmitting the rotational driving of the instrument. The device is arranged in a head of a contra-angle or handpiece. The shank has an annular groove in which at least one stud is able to engage radially, and a flat permitting rotational driving of the shank. The rotational movement is communicated by an output pinion of a mechanical transmission assembly coupled to a drive motor and arranged in a sleeve joined to the head of the contra-angle. The device is formed by a shaft traversed axially by the instrument shank, at least one elastic lever, and at least one pin. There is cooperation of the pin or pins with the flat provided on the instrument shank. | 06-02-2011 |
20110171595 | DENTAL BUR - The invention relates to an improved bur for use in handpieces having a rotatable chuck with a tool bore for receiving the bur, a friction grip member for frictionally retaining the bur in the chuck and a torque lock seat of non-circular cross-section and permitting length adjustment of the bur in the drive head by concentrically supporting the bur in the drive head at any position from a fully inserted position to a maximum retracted position. The bur includes a tool body having an axis of rotation, a working end for projecting from the handpiece and a driven end for insertion into the tool bore of the chuck. The driven end is a generally cylindrical shaft with a preselected outer circumference for fittingly engaging in the tool bore for concentric rotation of the driven end with the chuck. The shaft including a torque lock portion for fittingly and non-rotatably engaging the torque lock seat of the chuck. The torque lock portion has at least two flat surfaces circumferentially spaced apart by intermediate cylindrical mantle portions, for providing the locking portion with a cross-section including alternating circular and straight sections and fitting into the non-circular cross-section of the torque lock seat to prevent rotation of the torque lock portion in the torque lock seat. The circular sections have the same diameter as the outer diameter of the cylindrical shaft. A total area of the flat surfaces covers at least 0.001956 square inches and the circular sections extend over at least 30% of the outer circumference of the driven end. This maintains efficient torque transfer between the chuck and the tool and ensures concentricity of the bur in the handpiece to prevent undue vibration of the bur in the handpiece. | 07-14-2011 |
20120189979 | CHUCK MECHANISM FOR DENTAL HANDPIECE AND DENTAL HANDPIECE USING THE MECHANISM - A chuck mechanism for a dental handpiece and a dental handpiece with the chuck mechanism are disclosed. The chuck mechanism holds the columnar rotary tool for dental care rotatably with an annular rotor of the dental handpiece and the columnar rotor tool is concentrically detachable to the annular rotor which is rotatably attached to a head part of the dental handpiece. The chuck mechanism is characterized by an annular chucking member which comprises a cylindrical base part into which the annular rotor is integrally fitted and an elastic chucking piece having a chucking pawl for engaging with a locking groove formed at a base end of the rotary tool. The chuck mechanism enables the rotary tool to be easily removed from the annular rotor by elastically deforming the elastic chucking piece against elastic force of the elastic chucking piece to disengage the chucking pawl from the locking groove. | 07-26-2012 |
20120244495 | Clamping Device For A Dental Tool in A Dental Turbine Handpiece - A clamping device for a dental tool in a dental turbine handpiece having at least one clamping lever that is supported in a fulcrum and that extends along the axis of a tool shank to be clamped, wherein the clamping lever is designed and arranged such that the tool shank can be clamped using the clamping lever and that on rotation of the clamping device, through the effect of the centrifugal force, the clamping lever is radially deflected about the virtual fulcrum, so as to increase the clamping force acting on the tool shank. | 09-27-2012 |
20130029288 | POSITIVE DRIVE CHUCK AND BUR ARRANGEMENT FOR A DENTAL HANDPIECE - A chuck assembly for a dental handpiece includes a hollow cylindrical tube portion having a first internal bore, and a chuck portion having a second bore. The chuck portion is supported within the first bore co-rotational with the tube portion about a common axis. The chuck portion has an annular body portion defining the second bore for supporting a cylindrical tool therein. A drive element comprising a drive pin inserted in a first end of the tube portion traverses the first internal bore at a first end of the tube portion. The drive pin cooperates with a distal end of a rotary tool insertable into the second bore to transfer torque to the tool. The tool has an elongated body portion having a driven portion and a working portion. The driven portion includes a shank portion with channels for receiving the drive pin. | 01-31-2013 |
20140154642 | CONCENTRICITY-OPTIMIZED TOOL CLAMPING SYSTEM FOR DENTAL ANGLED HANDPIECES AND DENTAL TURBINES - A damping device for a dental tool in a dental turbine handpiece having at least one clamping lever. The clamping lever permits a tool shank to be clamped. | 06-05-2014 |
20140199654 | MEDICAL OR DENTAL HANDPIECE - 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. | 07-17-2014 |
20140356810 | POSITIVE DRIVE CHUCK AND BUR ARRANGEMENT FOR A DENTAL HANDPIECE - A chuck assembly for a dental handpiece includes a hollow cylindrical tube portion having a first internal bore, and a chuck portion having a second bore. The chuck portion is supported within the first bore co-rotational with the tube portion about a common axis. The chuck portion has an annular body portion defining the second bore for supporting a cylindrical tool therein. A drive element comprising a drive pin inserted in a first end of the tube portion traverses the first internal bore at a first end of the tube portion. The drive pin cooperates with a distal end of a rotary tool insertable into the second bore to transfer torque to the tool. The tool has an elongated body portion having a driven portion and a working portion. The driven portion includes a shank portion with channels for receiving the drive pin. | 12-04-2014 |
20150374385 | HAND PIECE FOR DENTAL OR SURGICAL APPLICATIONS - A handpiece for dental or surgical applications has a chuck for rotatably clamping a tool such as a bur, the chuck being drivingly connectable to a drive mechanism such as to rotate the tool about a rotation axis thereof, a push button operatively connected to the chuck, configured to release the tool from the chuck upon depressing the push button, a spherical element, preferably a ball, fitted within or mounted at the push button, arranged and configured such that, when the push button is depressed, the spherical element enters into contact with the chuck, the spherical element being of a material with a high hardness on the Vickers scale of >2000. | 12-31-2015 |
20160074134 | DENTAL HAND INSTRUMENT AND HEAD HOUSING THEREFOR - In the case of a dental hand instrument having a grip sleeve and also a head housing arranged at the front end of the grip sleeve for receiving or holding a treatment instrument, the head housing has a substantially cylindrical hollow space which is connected by way of at least one connecting bore to a connection region pointing to the grip sleeve, wherein the connecting bore is coupled, at its end facing the grip sleeve, to a media line extending through the grip sleeve, and wherein the inner wall region of the head housing enclosing the hollow space has a recess into which the connecting bore opens. | 03-17-2016 |
433128000 | Comprising locking means extending into groove or recess | 2 |
20090142730 | Device for holding a dental instrument - The invention relates to a device for holding a dental instrument in the head of a contra-angle, an instrument of the type comprising, in its upper part which is inserted into the head of the contra-angle, a lateral flat for rotating it and an annular groove for axially retaining it, characterized in that the shank receiving the handle of the instrument, comprises a transverse cutback ( | 06-04-2009 |
20090325123 | Bur for Adjustable Tool Drive Arrangement - The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation. | 12-31-2009 |