Electrosurgical devices with wire electrode

摘要

The invention provides an electrosurgical device and methods of use thereof. In one embodiment, the device may comprise a handle, a shaft distal to the handle, a first electrode tip and a second electrode tip adjacent a distal end of the shaft, with the first electrode tip spaced from the second electrode tip and wherein the first electrode tip comprises a first U-shaped electrode and the second electrode tip comprises a second U-shaped electrode, and at least one fluid outlet. In another embodiment, the device may comprise a handle, a shaft distal to the handle, and a first electrode and a second electrode adjacent a distal end of the shaft with the first electrode coplanar with the second electrode and comprising a wire electrode having a U-shape which surrounds a perimeter of the second electrode and is spaced from the second electrode by an aperture.

主权项

1. An electrosurgical device having less than three electrodes, the device comprising:
a handle; a shaft distal to the handle having a longitudinal axis and a distal end; a first electrode and a second electrode adjacent the distal end of the shaft, each electrode having a proximal portion, the first electrode coplanar with the second electrode and comprising a wire electrode having a U-shape which surrounds a perimeter of the second electrode and is spaced from the second electrode by an aperture, and wherein the U-shape of the first electrode is substantially situated in a plane that is substantially parallel with the longitudinal axis of the shaft;
at least one fluid outlet, wherein the at least one fluid outlet is s aced from said first electrode; andwherein the proximal portions of the first and second electrodes are fixed relative to the distal end of the shaft.