Medical device with a motor adjustable part.

摘要

The invention relates to a medical appliance, in particular a shockwave head of a lithotrite, having an adjustably mounted appliance part, in particular an ultrasound system. The intention is to ensure that the force exerted on the patient by the adjustable appliance part (6) does not exceed a predetermined value. To this end, the adjustable appliance part (6) is connected to a nut (10) which runs on a spindle (8) driven to rotate by a motor. The thread pitch is so selected that the nut (10), when a predetermined axial force on the spindle (8) is exceeded, is adjusted counter to the direction of adjustment predetermined by the spindle (8).