Title:
【発明の名称】アブレーション中に心臓内の信号を監視するための装置および方法
Document Type and Number:
Japanese Patent JPH08505294
Kind Code:
A
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.
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Inventors:
Nadera, Paul Sea.
Application Number:
JP51214494A
Publication Date:
June 11, 1996
Filing Date:
November 01, 1993
Export Citation:
Assignee:
American Cardiac Ablation Company, Inc.
International Classes:
A61B5/296; A61B18/12; (IPC1-7): A61B17/39; A61B5/0402; A61B5/0408; A61B5/0478; A61B5/0492
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)