AU AU2026206236B1

MULTIMODAL BIOPHYSICAL SENSING SYSTEM, CATHETER ASSEMBLIES, AND METHODS FOR VERIFYING CATHETER-TISSUE SEAL

Abstract

A multimodal biophysical sensing system comprising: an elongate device having at least one electrode disposed on a distal portion thereof; an electrical stimulator configured to deliver a charge-controlled pulse to the at least one electrode to charge an electrochemical double layer at an electrode-interface; sensing circuitry configured to measure a time- domain potential decay of the electrode-interface during a specified sensing window following the pulse; an impedance measurement module configured to determine an electrical access impedance of the electrode; and a processor configured to execute a fusion operation that classifies a tissue contact state by cross-referencing the measured potential decay against the measured electrical access impedance. ul u l u l

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