Fluid-assisted medical devices and systems

An electrosurgical device comprising: a distal portion having a bipolar electrode configuration; a first electrode tip spaced about a second electrode tip, the first tip electrode serves as a first pole of the bipolar electrode configuration and the second electrode tip serves as a second pole of the bipolar electrode configuration; the first electrode tip assembled adjacent a distal end of a first trunk and the second electrode tip assembled adjacent a distal end of a second trunk; a first fluid passage in fluid communication with a first opening fluid outlet and a second fluid passage in fluid communication with a second opening fluid outlet: the first opening fluid outlet adjacent the first electrode tip and the second fluid outlet opening adjacent the second electrode tip; the first electrode tip comprises an electrically conductive spherical distal end surface; and the second electrode tip comprises an electrically conductive spherical distal end surface; wherein: the first and second electrode tips configured to slide over a tissue surface and rotate as the electrodes move across the tissue surface in the presence of a fluid supplied from the outlet openings of fluid and an electric current supplied from the electrode tips.