STRUCTURE OF MINIATURE INVASICE MULTI-POLE PLASMA GENERATION ELECTRODE FOR THE ABLATION OF HERNIATED NUCLEUS PULPOSUS

摘要

PURPOSE: A minimum invasive plasma-generating electrode structure for extrication nucleus pulposus decomposition is provided to increase an electric field by reducing distance between electrodes through discharge. CONSTITUTION: A plasma electrode is formed into a rod shape. One or more electrode combination units are formed on a dielectric. A back electrode combination unit is formed on the rear side of the dielectric. A back electrode(15) comprises an electrode penetration unit(16). Both ends of the back electrode are projected and one end is inserted into the back electrode combination unit. A back electrode protrusion is formed on the back electrode. A plasma generating electrode passes through the electrode penetration unit. The plasma generating electrode is composed of tungsten.