Patent ID: 8396549
Filing Date: 2013-03-12
Classification: A61N

Abstract:
1. A method for pacing a left ventricle of a heart having an apex wall with an outer surface, comprising the steps of: providing a lead having a first electrode and a second electrode on a distal portion; inserting the distal portion of the lead into the apex wall such that the distal portion extends into the apex wall of a left ventricle of a heart; the first electrode being beneath the outer surface of the left ventricle and in proximity to a base of a first left ventricular papillary muscle; the second electrode being beneath the outer surface of the left ventricle and in proximity to a base of a second left ventricular papillary muscle; and producing activation in the apex of the left ventricle by delivering a pacing pulse via the first electrode in close proximity to the first papillary muscle so as to activate the first papillary muscle and delivering another pacing pulse via the second electrode in close proximity to the second papillary muscle so as to separately activate the second papillary muscle, the pacing pulses being delivered to the first and second electrodes with a timing relationship that causes closure of a mitral valve prior to a main left ventricular contraction.