| CPC G01R 31/52 (2020.01) [A61B 5/6858 (2013.01); G01K 3/005 (2013.01); H02H 3/087 (2013.01); H02H 5/04 (2013.01); A61B 2560/0276 (2013.01)] | 15 Claims |
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1. A system for amplifying signals sensed from each of a plurality of electrodes mounted on a distal end of a catheter, the system comprising:
an amplifier circuit comprising a plurality of amplifiers, each amplifier coupled to an electrode of the plurality of electrodes and configured for amplifying signals sensed from the electrode with which it is coupled; and
a safety apparatus configured for detecting at the coupling between the plurality electrodes and the amplifier circuit, direct current (DC) leakage from the amplifier circuit, the safety apparatus comprising:
a switch for controlling the flow of power from a power source to the amplifier circuit, the switch comprising a first setting, where power is delivered from the power source to the amplifier circuit, and a second setting, where the power from the power source to the amplifier circuit is cut off;
a direct current (DC) monitor in communication with the amplifier circuit, for monitoring DC signals from the amplifier circuit; and
a controller in communication with the DC monitor and the switch, the controller for controlling switching of the switch between the first setting and the second setting, in response to the controller determining whether the detected DC signals from the DC monitor have at least met a threshold DC signal.
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