Multi-loop mapping catheter

Abstract

A catheter to detect a plurality of physiological signal from within a patient's heart is disclosed. The catheter includes an elongated shaft having a distal region. A location sensor is coupled to the distal region. First and second sensing electrode arrays with electrodes are coupled to the distal region. The first sensing electrode array includes a first spline formed as first non-planar loop in an expanded configuration wherein first and second ends are coupled to the distal region of the shaft and a first intermediate portion extends from the distal region. The second sensing electrode array includes a second spline formed as second non-planar loop in the expanded configuration wherein third and fourth ends are coupled to the distal region of the shaft and a second intermediate portion extends from the distal region. The first intermediate portion does not contact the second intermediate portion in the expanded configuration.

Images