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Abstract

A method for delivering energy to tissue having a necrotic threshold may generally comprise inserting an electrode array comprising a plurality of electrodes into the tissue, inserting a central electrode into the tissue, positioning a ground pad proximal to the tissue, applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating in the tissue, applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation, and applying a ground potential to the ground pad. Electrical ablation devices and systems and methods of using the same are also described herein.

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First Claim