A surgical needle assembly (30) for penetrating soft and hard tissues of a patient includes a handle assembly (80) removably coupled to the needle assembly (30). The needle assembly (30) is electrically coupled to an electrical signal source. The surgical tool (20) includes an electrically conductive portion in communication with an un-insulated distal end of the needle assembly (30), and an insulated portion extending from the distal end to the handle assembly (80).
