Apparatus and method for monitoring endocardial signal during ab

Details Apparatus and method for monitoring endocardial signal during ab Apparatus and method for monitoring endocardial signal during ab

1992-11-13

1994-10-25

Cohen, Lee S.

Surgery

Truss

Pad

128702, 607 9, A61B 504

Patent

active

053579569

ABSTRACT:
An ablation catheter has an ablation electrode at a distal end coupled to an ablation power source through a low impedance coupling. 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. A timing element operates a plurality of switches 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.

REFERENCES:
patent: 3960141 (1976-06-01), Bolduc
patent: 4416276 (1983-11-01), Newton et al.
patent: 4641649 (1987-02-01), Walinsky et al.
patent: 4660571 (1987-04-01), Hess et al.
patent: 4785815 (1988-11-01), Cohen
patent: 4805621 (1989-02-01), Heinze et al.
patent: 4869248 (1989-09-01), Narula
patent: 4896671 (1990-01-01), Cunningham et al.
patent: 4945912 (1990-08-01), Langberg
patent: 4966597 (1990-10-01), Cosman
patent: 5156151 (1992-10-01), Imran
patent: 5239999 (1993-08-01), Imran
Nardella, Paul C., "Radio Frequency Energy and Impedance Feedback", SPIE vol. 1068 Catheter-Based Sensing and Imaging Technology (1989).

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