Patent ID: 8644902
Filing Date: 2014-02-04
Classification: A61B,F04C,Y10T

Abstract:
1. A method for sensing multiple local electric voltages from endocardial surface of a heart, comprising: providing a system for sensing multiple local electric voltages from endocardial surface of a heart, comprising: delivering the system to the heart; sliding the basket assembly beyond the distal end of the second elongate tubular member, whereby the splines radially expand into the radially expanded non-spherical shape to dispose the basket assembly within an atrium of the heart; contacting proximal atrial tissue with the exposed electrodes disposed on the proximal spline portions; detecting multiple local electric voltages with the exposed electrodes contacting the proximal atrial tissue from endocardial surface thereat; contacting other atrial tissue with the exposed electrodes disposed on the medial spline portions and the distal spline portions; and detecting multiple local electric voltages with the exposed electrodes disposed on the medial spline portions and the distal spline portions contacting the other atrial tissue from endocardial surface thereat; wherein the multiple local electric voltages form an electrocardiogram having a P wave, a QRS complex and a T wave.