DUAL-PURPOSE LASSO CATHETER WITH IRRIGATION USING CIRCUMFERENTIALLY ARRANGED RING BUMP ELECTRODES
First Claim
1. 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 ring electrodes that bulge above the outer surface and are circumferentially arranged around the entire circumference of the outer surface, each ring electrode defining a cavity thereunder, the ring electrodes having a plurality of perforations formed therethrough, the outer surface having at least one breach hole therein positioned beneath each ring electrode and in fluid communication with the irrigating lumen, the cavity and the perforations of each ring electrode for dispensing irrigating fluid from the resilient distal section through each ring electrode.
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Accused Products
Abstract
Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping and ablation of the heart has an array of raised, circumferential ring bump electrodes wherein each circumferential electrode has multiple perforations, which are in fluid communication with a cavity or chamber formed under the surface of the circumferential ring. The cavity is formed 360° around the outer surface or loop lumen of the lasso segment of the catheter which is in fluid communication with a breach hole (or holes) drilled through loop lumen and in fluid communication with an irrigating lumen. Each circumferential ring has a breach hole (or holes) that range from smaller to larger from the proximal end of the loop segment to the distal end of the loop segment in one embodiment.
168 Citations
20 Claims
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1. A catheter, comprising:
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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 ring electrodes that bulge above the outer surface and are circumferentially arranged around the entire circumference of the outer surface, each ring electrode defining a cavity thereunder, the ring electrodes having a plurality of perforations formed therethrough, the outer surface having at least one breach hole therein positioned beneath each ring electrode and in fluid communication with the irrigating lumen, the cavity and the perforations of each ring electrode for dispensing irrigating fluid from the resilient distal section through each ring electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification