Method and apparatus for spatially specific electrophysiological

Details Method and apparatus for spatially specific electrophysiological Method and apparatus for spatially specific electrophysiological

1995-05-25

1996-12-03

Sykes, Angela D.

Surgery

Truss

Pad

607122, A61B 504

Patent

active

055797644

ABSTRACT:
Orthogonal sensors, which are comprised of two or more electrodes and generally disposed circumferentially on the catheter at given longitudinal point along the catheter, receive signals which are differenced within a differential amplifier to produce a signal indicative only of the localized biopotential heart activity at a predetermined point in the myocardium. The orthogonal sensors are disposed in an ablative tip of the catheter to allow sensing of the localized cardiac activity which is adjacent to or in contact with the ablative tip during extirpation procedure or during the delivery of radio frequency energy during ablation. Sensing of the localized cardiac activity occurs simultaneously either with the ablation so that detailed and accurate electrocardiograms of the very tissue being ablated can be recorded.

REFERENCES:
patent: 4945912 (1990-08-01), Langberg
patent: 5228442 (1993-07-01), Imran
patent: 5450846 (1995-09-01), Goldreyer

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