Bipolar cutting end effector

摘要

An electrosurgical instrument for cutting tissue includes a blade assembly. The blade assembly includes a first electrode having a first pre-selected shape and a first distal edge, and a second electrode disposed in spaced relation relative to the first electrode. The second electrode includes a second pre-selected shape and a second distal edge, where the first distal edge and the second distal edge form an electrically conductive tissue cutting surface extending along the distal end of the instrument. The tissue cutting surface is adapted to connect to a source of electrosurgical energy such that the tissue cutting surface is capable of conducting electrosurgical energy through tissue adjacent thereto to effectively cut tissue.

主权项

1. An electrosurgical instrument comprising:
a blade assembly including:
a first electrode having a first pre-selected shape including a first opening defined therein, the first electrode having a first distal edge; anda second electrode disposed in spaced relation relative to the first electrode, the second electrode having a second pre-selected shape including a second opening defined therein, the second electrode having a second distal edge, an entirety of the second distal edge being disposed radially inward of the first distal edge, a proximal-most portion of the first electrode being disposed proximally of an entirety of the second electrode, the first and second electrodes being adapted to connect to an electrosurgical energy source; wherein the first distal edge and the second distal edge together form an electrically conductive tissue cutting surface at a distal end of the blade assembly, the tissue cutting surface being capable of conducting electrosurgical energy through tissue adjacent thereto to effectively cut tissue.