An ablation device for treating atherosclerotic tissues of a patient, the ablation device comprising a catheter shaft and an inner catheter, the inner catheter having a deployable electrode means, wherein the deployable electrode means comprises a plurality of preshaped expandable metallic basket members...http://www.google.co.uk/patents/US6036689?utm_source=gb-gplus-sharePatent US6036689 - Ablation device for treating atherosclerotic tissues