Pulsed field ablation system and leakage protection thereof

Abstract

One aspect provides a pulsed field ablation system including a bridge circuit configured to deliver bipolar and biphasic voltage pulses to a catheter. A leakage fault protection circuit is electrically coupled to the bridge circuit and includes a first comparator. An electronic processor is electrically coupled to the bridge circuit and the leakage fault protection circuit. The electronic processor is configured to determine a first offset threshold value to correct a first offset referenced at the first comparator and set a first threshold parameter of the first comparator based on the first offset threshold value and a leakage current parameter of the pulsed field ablation system. The electronic processor is also configured to determine a leakage fault when a detection parameter corresponding to the leakage fault satisfies the first threshold parameter at the first comparator.

Dependencies are inferred from the claim text.