Abstract: In the case of a treatment device, in particular a dental treatment instrument, having a tool, such as a dental drill, driven by a drive unit, and a conduit for delivery of a cooling medium to a treatment site worked by the tool, the quantity of the cooling medium delivered to the treatment site is dependent upon the removal power of the tool or upon the torque exercised by the tool.

Abstract: In a medicinal or dental hand instrument (1) comprising a hand piece (2) and a handle (6) arranged on the hand piece (2), an outlet opening (5), arranged on the front side of the handle (6), for the outlet of an abrasive therapeutic agent and a transport fluid, and a coupling terminal (4) for coupling the hand instrument (1) to a supply line for at least one transport fluid, in particular water and/or air, wherein the coupling terminal (4) is a coupling component (14b) of a coupling (13), the coupling component (14b) is arranged on an insert piece (20) which can be plugged into a plug-in socket or plug-in recess (19) and in its end zone, facing away from the flow, has one or more coaxially or paraxially disposed, sealed pipe socket couplings (10), which each connect a feed line (9, 11) for the transport fluid to an ongoing feed line (21, 22).

Abstract: A medical or dental-medical treatment chair has a backrest and a head support. The head support is pivotally connected with the backrest by means of a joint device having a first joint, and being fixable in a respective pivot position by means of a fixing device. For improving the support function, the fixing device has a piston cylinder with two working chambers. The piston cylinder is connected with joint parts of the first joint. The working chambers are connected with one another by means of a connection line in which a valve is disposed that can be selectively opened and closed. An actuating member is provided for the selective opening and closing of the valve.

Abstract: In a medicinal or dental hand instrument (1) comprising a hand piece (2) and a handle (6) arranged on the hand piece (2), an outlet opening (5), arranged on the front side of the handle (6), for the outlet of an abrasive therapeutic agent and a transport fluid, and a coupling terminal (4) for coupling the hand instrument (1) to a supply line for at least one transport fluid, in particular water and/or air, wherein the coupling terminal (4) is a coupling component (14b) of a coupling (13), the coupling component (14b) is arranged on an insert piece (20) which can be plugged into a plug-in socket or plug-in recess (19) and in its end zone, facing away from the flow, has one or more coaxially or paraxially disposed, sealed pipe socket couplings (10), which each connect a feed line (9, 11) for the transport fluid to an ongoing feed line (21, 22).

Abstract: Pulsed light source for the removal of biological tissue. The pulsed light source incorporates light means as well as a controller which controls the light means in such a way that the light means generate on the one hand ablation pulses (BA) with an irradiancy sufficient for the ablation of tissue and on the other hand a coagulation radiation (BK) with an irradiance sufficient simply for a heating of tissue, but not for an ablation of tissue. The controller controls the light means in such a way that the light means generate the coagulation radiation (BK) independently in time of the ablation pulses (BA).

Abstract: 3D tooth measurement by means of an optical probe wherein a prior matting treatment of the tooth to be measured can be dispensed with. The consequential reflection-dependent measuring errors are compensated by an error correction method.

Abstract: An optical oral or mouth probe which is utilized for the three-dimensional measurement or surveying of teeth possesses a highly-resoluting two-dimensional point-by-point freely-programmable projection unit, which generates a digitalized projection pattern from a computer in accordance with a programmed mathematical or graphical method, deposits the pattern in an image storage and is then brought into display through addressing of an LCD matrix plate, and with the aid of a focusing optic is then projected onto the surface which is to be surveyed or measured.

Abstract: In a machining device for machining precision, in particular dental, workpieces in a machining chamber surrounded by a housing, having an inspection window with two gripping holes arranged to the two sides of the inspection window, the machining chamber is preferably connected or connectable to a suction device and arranged in the machining chamber is at least one blasting nozzle for blasting and/or a demolding tool for demolding and/or an air nozzle for blowing off the workpiece.

Abstract: A device for heating flowing media in a handpiece, particularly air or water for use in dentistry procedures, includes a structural unit for controllably heating a flowing medium disposed in a housing in a sealed manner such that an annular flow passage is formed between an interior wall of the housing and the structural unit. The structural unit includes a PTC resistor having end faces disposed between and in thermal and electrical contact with a pair of porous sintered metal heat exchanger elements at a non-zero angle to the direction of medium flow. Connectors on the opposing ends of the unit contact the sintered heat exchanger elements to flow connect the structural unit in a medium flow line and to electrically connect the PTC resistor to a heating control circuit.

Abstract: A dental spray handpiece, consisting of a gripping sleeve possessing a connection for media at one end thereof and a media discharge at its other end, and in which sleeve there are arranged media conduits leading from the media connection to the media discharge. A tubular member or cannula for further conducting the media egressing from the media discharge is arranged at the media-discharging end of the gripping sleeve, the cannula including forwarding passageways for the advancing of the media, and which communicate with the surroundings through discharge orifices at the free end of the cannula.

Abstract: A rod-shaped light conductor for medical purposes, for example, which is employed in the dental medicine. The light conductor is protected against thermal stresses through the intermediary of a special surface coating, as a result of which there is prevented any deterioration in the discharge of light from the end surfaces of the light conductor.

Abstract: An artificial denture-skull for dental teaching and practice purposes, consisting of a model of an upper jaw or maxilla equipped with teeth and with a model of a lower jaw or mandible equipped with teeth, the last of which is pivotally connected with the upper jaw model through two jaw linkages which are arranged at both sides of the jaw models whereby for fixing the denture-skull in an open position, a downwardly extending latching device is provided on the upper jaw model and which able to be brought into engagement with the lower jaw model. For the most possibly complete simulation of the human head, the denture-skull is also connectable with a cranial cavity-forming skull portion, as well as with a pocket-shaped covering which possesses an oral aperture.

Abstract: An equipment stand, in particular for dental implements, which consists of a carrier possessing holders for the dental implements or instruments. A stand which extends in a vertical direction, concurrently forms the carrier possessing the implement holders, so as to thereby eliminate a separate component as a carrier in the form of a cross-bar, and consequently avoids a complex construction. Furthermore, through a superimposed arrangement of the implement holders there is afforded a good overview of the implements which are located in the holders.

Abstract: A clamping arrangement, especially for the clamping or gripping engagement of dental implements, consisting of a receiving sleeve which is rotatably supported in a handpiece and is connected with a rotary drive, which includes at least one rod-shaped elongated clamping element exerting a radially inwardly directed pressure against the shaft of the implement which is inserted into the receiving sleeve because of contact against an inclined track oriented perpendicular to the longitudinal axis of the clamping arrangement. The handpiece can pertain to a straight handpiece or to an angled handpiece (elbow) with an angled headpiece.

Abstract: A work position or station including a suctioning device incorporating a suctioning opening for the aspiration of suctionable material which is produced during the processing of workpieces, and a protective plate which guides the suctionable material into the suctioning opening. The protective plate concurrently screens the working personnel carrying out the processing, in particular the head of the person, against the incident suctionable material. The protective plate which is carried by a special mounting support can be moved upwardly prior to the implementing of work without the formation of suctionable material, upwardly away from the suctioning opening in a simple manner into a non-hindering inoperative position.

Abstract: A tartar-removing dental handpiece, consisting of an elongated gripping sleeve on which there is arranged a vibration generator, which is connected to a vibratable tartar-removing instrument arranged at one end of the gripping sleeve for transmitting vibrations thereto. The gripping sleeve incorporates at least one medium supply conduit which is connected through a coupling member located at the end of the gripping sleeve distant from the instrument to a connecting conduit leading to a medium source.

Abstract: A tartar-removing dental handpiece, constituted of an elongated gripping sleeve having a vibration generator arranged therein which is connected with a vibratable tartar-removing instrument located at one end of the gripping sleeve for transmission of vibrations. The gripping sleeve includes supply media conduits of which one is an energy infeed conduit leading to the vibration generator, and which are connected through the intermediary of a coupling member, which is arranged at the end of the gripping sleeve remote from the instrument, to connecting conduits leading to a medium source.

Abstract: A clamping arrangement for the clamping engagement of implements, especially dental instruments, consisting of a mounting sleeve which is rotatably supported within a handpiece, and which is connected with a rotary drive, and which possesses clamping elements acting in a radially inward direction against the shank of the instrument which is inserted into the mounting sleeve. The handpiece can relate to a straight handpiece or an angled handpiece with an angle headpiece.

Abstract: A foot-actuated control arrangement, in particular for dental apparatuses, including an actuating element acting on a switch or control element, and which is equipped with a treadle. The actuating element is displaceable towards both sides from an initial position in one plane, is displaceable along a pivoted path about a stationary position, and can be restrained through at least one setting or control element in the mentioned initial position along the pivoted path and, subsequent to a displacement from this position, can be automatically returned thereto.