Patent ID: 8109927
Filing Date: 2012-02-07
Classification: A61B

Abstract:
1. A tissue ablation system comprising: a base containing a plurality of threaded apertures; a plurality of sleeves disposed in the threaded apertures, the plurality of sleeves having an external threaded surface and an electrically conductive inner threaded surface; a plurality of needle electrodes disposed within the plurality of sleeves and extending from the base, the plurality of needle electrodes having an external threaded surface configured to interface with the electrically conductive inner threaded surface of the plurality of sleeves and being adjustable to adjust a distance of the needle electrodes with respect to the base, the plurality of needle electrodes comprising a lumen contained therein, an entry port at a proximal end of the lumen and an exit port at a distal end of the lumen; a source of liquid medium in fluid communication with the needle electrode lumens; and an electrical interface coupled to the plurality of needle electrodes via traces extending along a surface of the base and connecting to the electrically conductive inner threaded surface.