A steerable catheter suitable for radiofrequency ablation of cardiac tissue comprises a catheter shaft with a deflectable tip at the distal end of the shaft. The tip is deflected by means of a shapable handle coupled to pull wires fastened to the distal end of the deflectable tip. A core wire extends...http://www.google.com.au/patents/US5397304?utm_source=gb-gplus-sharePatent US5397304 - Shapable handle for steerable electrode catheter