Patent ID: 7416552
Filing Date: 2008-08-26
Classification: A61B

Abstract:
1. A multipolar, multi-lumen, virtual-electrode catheter for treatment of tissue, the catheter comprising (a) a catheter body having (b) a first exit feature extending through said first sidewall of said catheter body, wherein said first exit feature thereby fluidly couples said first internal lumen to said outer surface of said catheter body; (c) a second exit feature extending through said second sidewall of said catheter body, wherein said second exit feature thereby fluidly couples said second internal lumen to said outer surface of said catheter body; (d) a first internal electrode residing within at least a distal portion of said first internal lumen and adapted to deliver treatment energy to the tissue via said conductive fluid and said first exit feature; (e) a second internal electrode residing within at least a distal portion of said second internal lumen and adapted to deliver treatment energy to the tissue via said conductive fluid and said second exit feature; and (f) at least one surface electrode mounted on said outer surface of said catheter body adjacent to said first and second exit features.