Granted Patent B2

US 12,383,333 · App. 17/738,388 · Granted Aug 12, 2025

Inventors: Carlo Pappone (Cernusco Lombardone, IT); Alan de la Rama (Cerritos, CA); Gabriele Giuseppe Vicedomini (Brisighella, IT); Cary Hata (Irvine, CA); Tho Hoang Nguyen (Huntington Beach, CA); Peter Chen (Irvine, CA)

Assignee: St. Jude Medical, Cardiology Division, Inc.

A61B18/1492A61B5/287A61B2018/00351A61B2018/00791A61B2018/00797A61B2018/00839A61B2018/1467A61B2218/002

Abstract

Claims (21)

1. A mapping and ablation catheter comprising:

a catheter shaft comprising a proximal end and a distal end;

a flexible framework coupled to the distal end of the catheter shaft at a proximal connector, wherein the flexible framework comprises six longitudinal arms extending distally from the proximal connector and arranged in a planar array, wherein each of the six longitudinally extending arms converge at a distal portion of the flexible framework to form three loops;

a plurality of ring electrodes disposed on the flexible framework and configured to monitor mapping signals produced by a heart tissue, wherein the plurality of ring electrodes comprise greater than 32 ring electrodes disposed on the flexible framework;

at least one additional electrode disposed on the distal end of the catheter shaft;

a plurality of ablation electrodes disposed on the flexible framework, wherein the plurality of ablation electrodes are disposed at least one of longitudinally adjacent and transversely adjacent to one or more of the plurality of ring mapping electrodes in an alternating pattern; and

an irrigation channel extending through the catheter shaft and an irrigation port disposed at the proximal connector at the distal end of the catheter shaft and in fluid communication with the irrigation channel, wherein a shape of the irrigation port is planar having a greater width than a height and configured to expel a fan shaped flow of fluid over the plurality of ring electrodes disposed on the flexible framework of three loops.

2. The mapping and ablation catheter of claim 1 , wherein the at least one additional electrode comprises one or more ring electrodes.

3. The mapping and ablation catheter of claim 1 , wherein a plane defined by a distal opening of the irrigation port is parallel with a plane defined by the planar array of the flexible framework.

4. The mapping and ablation catheter of claim 1 , wherein the irrigation channel comprises a first irrigation lumen and a second irrigation lumen and the planar irrigation port comprises a first planar irrigation port in fluid communication with the first irrigation lumen and a second planar irrigation port in fluid communication with the second irrigation lumen, wherein the first and second irrigation ports are configured to expel fluid over each side of the flexible framework.

5. The mapping and ablation catheter of claim 1 , wherein the plurality of ring mapping electrodes and the plurality of ablation electrodes are disposed on each of the six longitudinally extending arms in a longitudinally alternating pattern.

6. The mapping and ablation catheter of claim 1 , wherein the plurality of ring electrodes are configured to receive a plurality of mapping signals during a defined time.

7. The mapping and ablation catheter of claim 1 , wherein the plurality of ring mapping electrodes and the plurality of ablation electrodes are disposed on each of the six longitudinally extending arms in a transversely alternating pattern.

8. A mapping and ablation catheter system comprising:

the mapping catheter of claim 1 ; and

an energy source in communication with the plurality of ablation electrodes.

9. The mapping and ablation catheter system of claim 8 , wherein the energy source is a radiofrequency (RF) generator configured to deliver RF energy to tissue via the plurality of ablation electrodes.

10. A mapping and ablation catheter system comprising:

the mapping catheter of claim 1 , and

a controller operably coupled with the plurality of ring electrodes and configured to determine whether any of the plurality of mapping signals exhibit a particular electrical pattern.

11. The mapping and ablation catheter system of claim 10 , wherein controller is configured to apply a filter to one or more of the plurality of mapping signals in order to determine whether any of the plurality of mapping signals exhibit the particular electrical pattern.

Continuity (3)

References Cited (362)