Roche Diagnostics International Ag

Roche Diagnostics Gmbh

Forschungszentrum Julich Gmbh

F. Hoffmann-la Roche Ag

Thomas Von Büren

Urban Schnell

Stefan Troller

Jean-Noel Fehr

Jean-Noël Fehr

Marc Mattmüller

Jean-Christophe Roulet

A medical infusion system with pulse width modulation and a safety circuit and a method thereof are disclosed. Embodiments of the system include a switching device and a pump motor, wherein the pump motor and the switching device are connected in series and constitute a power supply circuit to be connected to a power supply. Embodiments of the system further includes a control signal generator configured to generate a control signal e.g. PWM, and which is connected to input of the safety circuit. Output of the safety circuit is connected to a control input of the switching device such that the pump motor will not operate if there is no control signal applied to the input of the safety circuit.

Medical infusion system with pulse width modulation and safety circuit

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Bern, Switzerland

Thomas Von Büren