Catheter having cooled multiple-needle electrode

Details Catheter having cooled multiple-needle electrode Catheter having cooled multiple-needle electrode

1997-05-15

1998-08-11

Peffley, Michael

Surgery

Instruments

Electrical application

607122, 607101, A61B 1739

Patent

active

057921407

ABSTRACT:
An improved ablation catheter with at least one multiple-needle electrode can be used in ablating the arrhythmogenic region instead of an arrhythmogenic point of a patient. This catheter is particularly useful for treating the patient with atrial fibrillation (AFib) indications. A catheter suitable for radiofrequency ablation of cardiac tissues comprises a delivery catheter and an inner catheter having a distal section, a distal end, a proximal end and at least one lumen extending therebetween. The ablation catheter has a temperature sensor and a close-loop temperature control. The ablation catheter having at least one multiple-needle electrode is inserted into the chambers of the heart to create a plurality of deep, large, and contiguous lesions by applying radiofrequency energy and cooled fluid to said electrode.

REFERENCES:
patent: 5423811 (1995-06-01), Imran et al.
patent: 5437662 (1995-08-01), Nardella
patent: 5462521 (1995-10-01), Brucker et al.
patent: 5545161 (1996-08-01), Imran

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