An infusion array ablation apparatus includes an elongated delivery device having a lumen and an infusion array positionable in the lumen. The infusion array includes an RF electrode and at least a first and a second infusion member. Each infusion member has a tissue piercing distal portion and an infusion...http://www.google.co.uk/patents/US6641580?utm_source=gb-gplus-sharePatent US6641580 - Infusion array ablation apparatus
