Endocardial mapping and ablation system utilizing separately con

Details Endocardial mapping and ablation system utilizing separately con Endocardial mapping and ablation system utilizing separately con

1993-09-14

1995-04-25

Pfaffle, Krista M.

Surgery

Truss

Pad

12866003, 12866206, 607122, 607123, A61B 504, A61N 105

Patent

active

054090008

ABSTRACT:
Endocardial mapping and ablation system for introduction into a chamber of the heart formed by a wall and having a passage leading thereto comprising a catheter probe having a distal extremity adapted to be positioned in the chamber of the heart. The catheter probe is comprised of a plurality of flexible longitudinally extending circumferentially spaced-apart arms adapted to be disposed within the chamber of the heart. Electrodes are carried by the arms and are adapted to be moved into engagement with the wall of the heart. Markers visibly ultrasonically are carried by the arms for encoding the arms so that the one arm can be distinguished from another. An ablation catheter is carried by and is slidably mounted in the catheter probe and has a distal extremity movable into the chamber of the heart while the catheter probe is disposed therein. The ablation catheter has control means whereby the distal extremity can be moved independently of movement of the catheter probe while the distal extremity of the catheter probe is in the chamber of the heart. An ablation electrode is carried by the distal extremity of the ablation catheter. Ultrasonic viewing means is carried by the distal extremity of the ablation catheter. The distal extremity of the ablation catheter is movable into positions to view ultrasonically the markers carried by the arms of the catheter probe so that the arms can be identified and the spacing of the arms can be ascertained.

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