A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/04 (2006.01) A61B 5/042 (2006.01) A61B 18/12 (2006.01) A61B 17/39 (1995.01)
Patent
CA 2149311
2149311 9410904 PCTABS00032 An ablation catheter has an ablation electrode (12) at a distal end coupled to an ablation power source (18) through a low impedance coupling (16). The ablation electrode also functions as a sensing electrode, for monitoring the endocardial signal and preferably also tissue impedance during the ablation procedure, and is coupled to an electrode monitor through a high impedance coupling (24). A timing element (34) operates a plurality of switches (20, 26, 32) to selectively isolate, dampen, or interconnect various signal paths during plural repetitive non-overlapping ablation and quiescent intervals which alternate at a rate substantially above a Nyquist sampling rate. RF energy is delivered to the ablation site during the ablation intervals. The local endocardial signal is measured during the quiescent intervals.
American Cardiac Ablation Co. Inc.
Riches Mckenzie & Herbert Llp
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