An intravenous electrophysiological catheter with discriminable electrodes for multiple electrode discrimination and orientation in two-dimensional visualization

摘要

An electrophysiological catheter having a balloon having a membrane is disclosed.An electrode may be disposed on the film.Each electrode may include a radiation impermeable marker.These markers may have different forms, e.g., alphanumeric or polygons, to facilitate the visualization of the electrodes using bistable images and enable the selection of appropriate electrodes to be energized during tissue ablation.The subject matter of the present invention allows for proper orientation of electrodes on the balloon under a two-dimensional imaging system.This allows the operator or the doctor to determine whether a particular electrode is adjacent or continuous to the posterior surface of the left atrium, or by ablation such a posterior surface with shorter duration or lower power and reducing the possibility of damaging adjacent anatomical structures Effective transmural lesion can be formed in the posterior wall of the left atrium.