ELECTRICAL ABLATION DEVICES AND METHODS

摘要

An ablation device may generally comprise a first electrode, a plurality of second electrodes, and a grounding pad. Each of the plurality of second electrodes may comprise a first conductive section, a second conductive section, and a non-conductive section between the first conductive section and the second conductive section. The first electrode and each of the plurality of second electrodes may be coupled to an energy source delivering a series of electrical pulses to tissue to induce cell necrosis by irreversible electroporation.

主权项

1. An ablation apparatus, comprising:
a first electrode having a first diameter; a plurality of second electrodes, each of the plurality of second electrodes having a second diameter, and wherein each of the plurality of second electrodes comprises:
a proximal end;a distal end;a first conductive portion intermediate the proximal end and the distal end;a non-conductive portion intermediate the first conductive portion and the distal end; anda second conductive portion at the distal end; a grounding pad comprising a non-conductive outer region and a conductive inner region; and an energy source coupled to the first electrode and the plurality of second electrodes, wherein the energy source is configured to deliver a series of electrical pulses to tissue to induce cell necrosis by irreversible electroporation; and wherein the first diameter is greater than the second diameter.