Abstract: A system for driving an electric handpiece in response to a pneumatic control signal may provide for fast interchange of handpieces, self-calibration and wide dynamic range of operation with precise speed control. The system may be incorporated into virtually any dental treatment center using traditional pneumatic drive handpieces, and a conversion kit may facilitate such conversion. The system may provide not only for controlling the speed and torque of a tool coupled to an electric drive handpiece responsive to a pneumatic control signal, it may also provide for coupling cooling air and treatment media, such as air and/or water to the handpiece. Coupling of a handpiece to an operating base of the system, including coupling of media lines and electrical connections may be made with a simple press and twist action using quick connection structure.

Abstract: A system for driving an electric handpiece in response to a pneumatic control signal may provide for fast interchange of handpieces, self-calibration and wide dynamic range of operation with precise speed control. The system may be incorporated into virtually any dental treatment center using traditional pneumatic drive handpieces, and a conversion kit may facilitate such conversion. The system may provide not only for controlling the speed and torque of a tool coupled to an electric drive handpiece responsive to a pneumatic control signal, it may also provide for coupling cooling air and treatment media, such as air and/or water to the handpiece. Coupling of a handpiece to an operating base of the system, including coupling of media lines and electrical connections may be made with a simple press and twist action using quick connection structure.

Abstract: A system for driving an electric handpiece in response to a pneumatic control signal may provide for fast interchange of handpieces, self-calibration and wide dynamic range of operation with precise speed control. The system may be incorporated into virtually any dental treatment center using traditional pneumatic drive handpieces, and a conversion kit may facilitate such conversion. The system may provide not only for controlling the speed and torque of a tool coupled to an electric drive handpiece responsive to a pneumatic control signal, it may also provide for coupling cooling air and treatment media, such as air and/or water to the handpiece. Coupling of a handpiece to an operating base of the system, including coupling of media lines and electrical connections may be made with a simple press and twist action using quick connection structure.

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.

Abstract: Functional handpiece having an elongate handpiece body which has at its rearward end a connection element for connection with a flexible supply line, and has at its forward end a light emission element of a light permeable material for the illumination of the treatment site, and has in the light emission element an outlet opening for a medium such as water or air or spray, the light emission element forming a forward region of the functional handpiece and being releasably connected with the remaining region of the functional handpiece, and the light emission element having a plug-in fitting for the light emission element.

Abstract: Functional handpiece 1 having an elongate handpiece body which has at its rearward end a connection element for connection with a flexible supply line, and has at its forward end a light emission element of a light permeable material for the illumination of the treatment site, and has in the light emission element an outlet opening for a medium such as water or air or spray, the light emission element forming a forward region of the functional handpiece and being releasably connected with the remaining region of the functional handpiece, and the light emission element having a plug-in fitting for the light emission element.

Abstract: A device for regulated heating of media in a dental handpiece has at least one media line which can be opened via a switch, a heating element associated with the media line, a temperature sensor detecting the temperature of the medium and a regulation circuit which is connected with the temperature sensor and controls the heating element in dependence upon the sensor signals. After actuation of the switch the heating element is operated for a short period of time at a predetermined heating power independent of the output signal of the regulation circuit, in order to heat the medium as rapidly as possible to the required temperature.

Abstract: The invention relates to a medical or dental-medical instrument (2) having a memory element (10p) for identification and/or operational parameter data. IN order to extend the range of possible applications of the instrument, the memory element (10p) is constituted for the overwriting of the data by other data.

Abstract: The invention relates to a medical or dental-medical handpiece having a rotary part, in particular a turbine rotor. In order to improve the handpiece with regard to small construction, running noise and economical construction, there is provided a roller bearing for the purpose of mounting the rotary part, having at least two roller body rows arranged next to one another.

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.

Abstract: The invention relates to a cannula for a medical or dental-medical handpiece for spraying a flow medium which contains abrasively effective particles, having a cannula shaft which is in substance straight, and a sideways directed outlet nozzle in the forward end region of the cannula shaft, wherein in the cannula shaft a first channel section of a delivery line extends axially forwardly, from which there extends a second channel section sideways to the outlet nozzle. In order to increase the working life, in the region of the apex of the angle included by the channel sections there is arranged an impact wall lying axially opposite to the first channel section and/or the channel sections are surrounded by a protective wall at least over a part of their length, wherein the impact wall and/or the protective wall are of a material that is more wear resistant or harder than the material of the cannula shaft.

Abstract: The invention relates to a cannula for a medical or dental-medical handpiece for spraying a flow medium which contains abrasively effective particles, having a cannula shaft which is in substance straight, and a sideways directed outlet nozzle in the forward end region of the cannula shaft, wherein in the cannula shaft a first channel section of a delivery line extends axially forwardly, from which there extends a second channel section sideways to the outlet nozzle. In order to increase the working life, in the region of the apex of the angle included by the channel sections there is arranged an impact wall lying axially opposite to the first channel section, and/or the channel sections are surrounded by a protective wall at least over a part of their length, wherein the impact wall and/or the protective wall are of a material that is more wear resistant or harder than the material of the cannula shaft.