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AssigneeCRC EP, Inc.
InventorsDorin PANESCU, Cary HATA, Alan DE LA RAMA, Henning EBERT, Steffen HOLZINGER
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The invention relates to an ablation catheter for treatment of a patient's tissue, for example for a PVI procedure on a patient's heart, comprising an elongated catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft with a plurality of electrodes accommodated along the ablation portion, wherein the ablation portion comprises at least two loop sections forming a three-dimensional spiral. In order to increase safety of ablation treatment, spare adjacent tissue (e.g. nerves, vessels, esophagus) and shorten ablation time, a pitch, or clearance of two neighboring loop sections is greater than an ionization threshold of the medium around the distal section, for example blood or gases resulted from electrolysis. The invention further relates to an operation method of such ablation catheter.
An ablation catheter for treatment of patient tissue by delivery of high-voltage pulses comprising:
A method to operate an ablation catheter for treatment of patient tissue as for a PVI procedure on a patient's heart, comprising an elongated catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft with a plurality of electrodes accommodated along the ablation portion, wherein the ablation portion comprises at least two loop sections forming a three-dimensional spiral, wherein the plurality of electrodes is energized with high-voltage charge-balanced pulsed electric fields which are delivered in a monopolar arrangement or in a bipolar arrangement or in a combination of a monopolar arrangement and a bipolar arrangement.
Dependencies are inferred from the claim text.