Device and a method for equalizing a patient's potential with respect to medical equipment

A device for equalizing a patient's potential with respect to medical equipment, comprising:

• at least two measuring electrodes and one reference electrode which are adapted to be applied to the patient;
• a drive-signal generation circuit having a plurality of inputs and an output, wherein said output is connected to the reference electrode;
• a control circuit which has supplied thereto measuring signals from said measuring electrodes and which examines whether said measuring signals lie within a predetermined range;
• said control circuit supplying only those measuring signals to the plurality of inputs of the drive-signal generation circuit which lie within a predetermined range;
• and
• said control circuit applying a reference potential to one of said plurality of inputs of the drive-signal generation circuit if the measuring signals do not lie within said predetermined range.

A method for equalizing a patient's potential with respect to medical equipment, comprising the following steps:

• applying a measuring electrode and a reference electrode to the patient;
• examining whether a measuring signal supplied by the measuring electrode lies within a predetermined range;
• producing a drive signal, which is supplied to the reference electrode, on the basis of the measuring signal, if said measuring signal lies within said predetermined range;
• and
• applying a reference potential to the reference electrode, if said measuring signal does not lie within said predetermined range.

A method for equalizing a patient's potential with respect to medical equipment, comprising the following steps:

• applying at least two measuring electrodes and a reference electrode to the patient;
• examining whether measuring signals supplied by the measuring electrodes lie within a predetermined range;
• producing a drive signal, which is supplied to the reference electrode, only on the basis of the measuring signals which lie within said predetermined range;
• and
• applying a reference potential to the reference electrode, if the measuring signals do not lie within said predetermined range.