Electrosurgical devices with directional radiation pattern

摘要

A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue.

主权项

1. A method of directing energy to a target volume of tissue, the method comprising:
providing a device including an elongated body member having a body wall defining a chamber therein, an outer jacket formed of an electrically conductive material, an antenna assembly disposed in the chamber, and an outer sleeve associated with the elongated body member, the outer sleeve configured to move rotatably or slideably along an outside of the antenna assembly; positioning the device relative to the target volume of tissue; transmitting the energy from an energy source to the antenna assembly; and causing the energy to radiate through an opening in the body wall in a broadside radiation pattern to the target volume of tissue.