Patent ID: 9271784
Filing Date: 2016-03-01
CPC Classification: A61B

Claim Text:
1. An electrosurgical wand comprising: an elongate shaft that defines a handle end and a distal end; a connector comprising a first and second electrical pins; an insulative sheath having a distal end that defines a first and second plurality of discharge apertures on the distal end of the elongate shaft, the first and second plurality of discharge apertures fluidly coupled to a first fluid conduit, and the first fluid conduit within the elongate shaft; a first active electrode of conductive material disposed on the distal end of the elongate shaft, the first active electrode having a distal surface and a thickness, and wherein the distal surface comprises at least one inverted cusp portion, defined by two smooth curved surfaces and a line of intersection spaced proximally from the distal surface; and wherein the first active electrode is electrically coupled to the first electrical pin; a first return electrode of conductive material, the first return electrode comprising an a distally extending tab arranged on a first side of the shaft and having a shape selected so that the spacing between a distal edge of the tab and the distal surface of the active electrode is near-uniform along the length of the edge of the tab, the first return electrode electrically coupled to the second electrical pin; and at least one aspiration aperture on a second side of the elongate shaft fluidly coupled to a second fluid conduit, the second fluid conduit within the elongate shaft.