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 handpiece. In order to improve the operability of the handpiece and/or the practicability of the treatment, and in particular to simplify that, the handpiece has a display for the showing of a work-relevant data of images.

Abstract: Functional handpiece 1 having an elongate handpiece body 2 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 3 of a light permeable material for the illumination of the treatment site, and has in the light emission element 3 an outlet opening 15 for a medium such as water or air or spray, the light emission element 3 forming a forward region of the functional handpiece 1 and being releasably connected with the remaining region of the functional handpiece 1, and the light emission element 3 having a plug-in fitting 3a for the light emission element 3.

Abstract: A device for regulated heating of media in a dental handpiece (1) has at least one media line (10) which can be opened via a switch (32), a heating element (12, 31) associated with the media line (10), a temperature sensor (13, 34) detecting the temperature of the medium and a regulation circuit (33) which is connected with the temperature sensor (13, 34) and controls the heating element (12, 31) in dependence upon the sensor signals. After an actuation of the switch. (32) the heating element (12, 31) is operated for a short period of time at a predetermined heating power independent of the output signal of the regulation circuit (33), in order to heat the medium as rapidly as possible to the required temperature.

Abstract: The invention relates to a medical or dental-medical apparatus (1), having a delivery line (31) for a liquid and having a screw bushing (17) onto which a container (14) for the liquid can be screwed, the delivery line (31) extending from the interior of the container (14) to the outside and penetrating the screw bushing (17), a compressed gas line (39) penetrating the screw bushing (17) from the outside inwardly, and the compressed gas line (39) being closable and openable by means of a valve (41). In order to simplify the operating effort, the screw bushing (17) is rotatably mounted in a rotary bearing (26) and stands in working connection with a switch cam (44) which, in a rotary position of the screw bushing (17) which is rotated in the screwing-on direction (45), opens the previously closed valve (41).