Medical, in particular dental handpiece

摘要

The dental handpiece (1) has a focal distance portion (3) that is connected movably in rotation, for driving a tool. A rotation speed measurement device (4) measures the rotation speed of the focal distance portion and to produce to electrical rotation speed measurement signal. An electrical power supplyable illumination device (2) deliveries the radiation such at visible light, on a treatment site. A common electric line (6) transmits the electrical power to the illumination device and the rotation speed measurement signal of the rotation speed measurement device. Independent claims are included for the following: (1) a dental treatment apparatus; (2) a method for operating dental handpiece; and (3) a method involves for operating dental treatment apparatus.