The invention provides a medical device that includes a housing, a tubular member extending from the distal end of the housing, a first arm extending from the distal end of the tubular member, the first arm including a first electrode, a second arm extending from the distal end of the tubular member,...http://www.google.co.uk/patents/US7651494?utm_source=gb-gplus-sharePatent US7651494 - Fluid-assisted medical device
