A cell necrosis apparatus has a flexible introducer including a lumen and a distal end sufficiently sharp to penetrate tissue. An energy delivery device is positionable in the introducer as the introducer is advanced through tissue. The energy delivery device includes a first RF electrode with a tissue...http://www.google.com.au/patents/US6652516?utm_source=gb-gplus-sharePatent US6652516 - Cell necrosis apparatus