Atrial ablation catheter and method of use
AssigneeMedtronic Ablation Frontiers LLC
InventorsChristopher G. Kunis, Thomas M. Castellano, Marshall L. Sherman, Randell L. Werneth
Life of this patent
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Abstract
An atrial ablation catheter and methods for its use. The endocardial catheter includes an electrode array particularly adapted to locate and ablate foci of arrhythmia which are required for sustained atrial fibrillation is provided. The array is easily deployed and retracted from the catheter, and presents a distally oriented electrode array that can be pressed against the wall of the atrium.
Claims17
An ablation catheter adapted to ablate atrial wall tissue, comprising:
- an inner catheter tube;
- an outer catheter tube slidably mounted on the inner catheter tube;
- an electrode array having at least two resilient arms coupled to the inner catheter tube, each of the at least two resilient arms having a delivery configuration and an expanded configuration and comprising a distal arm section, a proximal arm section, and a bend section disposed between the distal arm section and the proximal arm section;
- and
- a plurality of electrodes coupled to the distal arm section of each of the at least two resilient arms, wherein each of the resilient arms is disposed within the outer catheter tube in the delivery configuration and each of the resilient arms is withdrawn from the outer catheter tube in the expanded configuration to form a planar array of substantially triangular faces oriented parallel to a longitudinal axis of the catheter.
An ablation catheter adapted to ablate atrial wall tissue, comprising:
- an inner catheter tube;
- an outer catheter tube slidably mounted on the inner catheter tube;
- an electrode array having at least two resilient arms coupled to the inner catheter tube, each of the at least two resilient arms having a delivery configuration and an expanded configuration and comprising a distal arm section, a proximal arm section, and a bend section disposed between the distal arm section and the proximal arm section;
- and
- a plurality of electrodes coupled to the distal arm section of the at least two resilient arms, wherein each of the resilient arms is disposed within the outer catheter tube in the delivery configuration and each of the resilient arms self-expands in the expanded configuration responsive to withdrawal of the outer catheter tube to form a planar array of triangular faces.
An ablation catheter adapted to ablate atrial wall tissue, comprising:
- an inner catheter tube;
- an outer catheter tube slidably mounted on the inner catheter tube;
- an electrode array having at least two resilient arms coupled to the inner catheter tube, each of the at least two resilient arms having a delivery configuration and an expanded configuration and comprising a distal arm section, a proximal arm section, and a bend section disposed between the distal arm section and the proximal arm section;
- and
- a plurality of electrodes coupled to the distal arm section of each of the at least two resilient arms, wherein each of the resilient arms is disposed within the outer catheter tube in the delivery configuration and each of the resilient arms is withdrawn from the outer catheter tube in the expanded configuration;
- in the expanded configuration, the distal arm sections extend radially outward from the inner catheter tube and resiliently form a plane substantially perpendicular to a longitudinal axis of the catheter.
Dependencies are inferred from the claim text.