Methods for locating and ablating accessory pathways in the hear

Details Methods for locating and ablating accessory pathways in the hear Methods for locating and ablating accessory pathways in the hear

1996-11-06

1997-10-07

Jastrzab, Jeffrey R.

Surgery

Truss

Pad

607101, 607122, 607148, 606 41, A61B 504, A61N 106

Patent

active

056736959

ABSTRACT:
Systems and methods sense electrical events about a selected annulus region of the heart to identify the location of an accessory pathway. The systems and methods establish a contact site between heart tissue along the selected annulus and a multi-electrode array having a generally circular shape that conforms to the circumferential geometry of the selected annulus region. The systems and methods maintain the site of contact between the electrode array and heart tissue, while conveying signals representing electrical events sensed by bipolar pairs of the electrodes in the selected annulus region. The systems and methods display the signals as graphic information that represents the time differences between the atrial and ventricular electrogram complexes sensed by bipolar pairs of the electrodes on the selected annulus region. The bipolar pair of electrodes displaying the least time separation between the atrial and ventricular complexes identifies the region of the accessory pathway. With this information, the systems and methods convey energy to one or more of the electrodes of the selected pair to ablate tissue in the selected annulus region.

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