Patent ID: 6430426
Filing Date: 2002-08-06
Classification: A61B,A61N

Abstract:
A recording and ablation catheter system for mapping electrical activity and creating ablation lesions in a cardiac chamber of interest comprising:(a) a hollow outer catheter or sheath; (b) a recording and ablation device operable within said outer catheter or sheath and extendable to protrude from an opening in said outer catheter or sheath, said recording and ablation device being axially adjustable relative to said sheath and having a distal tip; (c) wherein said recording and ablation device is selected from guide-mounted flexible inner catheters, flexible inner catheters with one or more attached shape control elements and adjustable length deployable ribbon loop devices; (d) wherein said recording and ablation device comprises a plurality of serially spaced, electrically isolated, separately connected, selectively energizable electrodes in one combination forming a continuous array; (e) a circuit system enabling separate signal reception for mapping and separate, selective energization to accomplish ablation of a desired shape; and (f) wherein said recording and ablation system further comprises a guide member and a guide member eye that slideably threads over said guide member for navigating said recording and ablation device within a vascular or cardiac chamber, said recording and ablation device being axially adjustable relative to said guide member to produce a desired shape to address an inner surface of a chamber of interest.