Patent ID: 8029510

Claim:
Surgical machine comprising: a housing, a surgical drive disposed in the housing, a push-button unit with at least one actuating member mounted on the housing for movement in a direction of actuation for prescribing a rotational speed and/or a direction of rotation of the surgical machine, a field generating unit for generating a magnetic field, at least one actuating sensor coupled with the field generating unit for generating an actuation signal in response to a movement and/or a position of the actuating member, the generated actuation signal being correlated with a field strength and/or a change in the field generated by the field generating unit, which occurs as a result of a movement of the actuating member, a field changing member for generating a change in the field acting at a location of the actuating sensor and generated by the field generating unit, which occurs as a result of a movement and/or a changed position of the actuating member, wherein: the drive and the housing are directly or indirectly connectable in a detachable manner, and the actuating sensor and the field generating unit are fixedly disposed relative to each other.