ABSTANDSSICHERUNG FUER OPERATIONSMIKROSKOP MIT ELEKTROMOTORISCHEM STATIV.

摘要

A spacing safety mechanism for operation microscopes with electromotive stands is described, in which ultrasonic transmitter and an ultrasonic receiver are arranged in the vicinity of the operation microscope. When the travel time of the ultrasonic signals reflected by the body of the patient is less than a predeterminable value, the voltage supply of the motor for the downward movement of the operation microscope is interrupted.