Electric motor for driving a medical, in particular dental instrument

摘要

The motor (1) has a housing (2) for receiving a rotor unit, which is rotatably mounted in a stator packet (3''') accommodated in the housing. A part of a stator sheet (5''') of the stator packet includes a cooling lamella (9') with an opening (11) for forming coolant line sections (12'', 13'''). A cooling medium for cooling the motor flows through the coolant line sections. A medium line (6) is partially arranged in the cooling line sections so that the stator packet and the medium line are simultaneously cooled by the cooling medium. Independent claims are also included for the following: (1) a medical drive unit (2) a medical hand or angular piece.