Patent ID: 9125984
Filing Date: 2015-09-08
Classification: A61M

Abstract:
1. Injection system for injecting liquids within a strong magnetic field, an alternating magnetic field and/or a high-frequency electric field, for use with a medical technical system, comprising: a) a room which is shielded from electromagnetic fields by means of a shield, b) an injection device, by means of which liquid to be injected can be dispensed to a patient, c) a drive device of the injection device, by means of which at least one conveying element can be displaced for injection purposes, wherein the drive device comprises a pressure transducer comprising a piston/cylinder unit with a first working chamber and a second working chamber which are separated from one another by a movable piston; d) a control and monitoring unit which is arranged outside the shielded room, e) a hydraulic drive device comprising at least one hydraulic line of which is guided out of the room to a pressure generating unit in the form of a hydraulic pump, and f) a distance sensor arranged in the shielded room and located in a region of one of the working chambers of the pressure transducer, by means of which a position of the piston of the associated pressure transducer can be directly detected.