LASSO NAV Duo Loop eco Catheters, Catalog No. D-1354-01, D-1354-02, D-1354-03, D-1354-04, D-1354-05, D-1354-06. || LASSO NAV DUO LOOP eco Catheter is indicated for multiple electrode electrophysiological mapping of the cardiac structures of the heart, i.e. recording or stimulation only. The catheter is designed to obtain electrograms in the atrial regions of the heart. LASSO NAV DUO LOOP eco Catheter provides location information when used with compatible CARTO 3 EP Navigation Systems.