Dual-Purpose Lasso Catheter with Irrigation
AssigneeBiosense Webster, Inc.
InventorsAssaf Govari, Athanassios Papaioannou, Christopher Beeckler
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Abstract
Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping of the heart has an array of raised, perforated electrodes, which are in fluid communication with an irrigating lumen. There are position sensors on a distal loop section and on a proximal base section of the catheter. The electrodes are sensing electrodes that may be adapted for pacing or ablation. The raised electrodes securely contact cardiac tissue, forming electrical connections having little resistance.
Claims33
A catheter, comprising:
- an insertion tube having a distal end;
- and
- a resilient distal section fixed to the distal end of the insertion tube, the distal section having an outer surface and an inner irrigating lumen and comprises a plurality of electrodes that bulge above the outer surface, the electrodes having a plurality of perforations formed therethrough, the outer surface being in fluid communication with the irrigating lumen via the perforations.
A method for locating an arrhythmogenic area in a heart of a living subject, comprising the steps of:
- inserting a catheter into a chamber of the heart, the catheter comprising an insertion tube having a distal end and a resilient distal section that has an outer surface and an inner irrigating lumen and is fixed to the distal end of the insertion tube and further comprises a plurality of electrodes that bulge above the outer surface, the electrodes having a plurality of perforations formed therethrough, the outer surface being in fluid communication with the irrigating lumen via the perforations;
- locating the catheter in proximity to a target in the chamber;
- analyzing electrical signals received from the target via the catheter to make a determination that the electrical signals are indicative of abnormal electrical conduction within the heart;
- and
- responsively to the determination conducting energy into the heart to thereby affect the abnormal electrical conduction.
Dependencies are inferred from the claim text.