Patent ID: 7996072

Claim:
An implantable cardiac device, comprising: a housing having a first face opposing a second face, and an edge extending from a perimeter of the first face to a perimeter of the second face; a pulse generator comprising a controller provided in the housing; and a plurality of electrodes coupled to the pulse generator and arranged in a spaced relationship on the housing, the plurality of electrodes comprising at least three electrodes positioned on the edge of the housing and wrapping over a portion of the first and second faces of the housing; the controller configured to measure a plurality of signals using a plurality of electrode combinations and to automatically select a particular electrode combination of the plurality of electrode combinations that provides for improved cardiac signal sensing relative to other ones of the plurality of electrode combinations based on the measured signals, and controller selection of the particular electrode combination provides for sensing a cardiac signal having an amplitude or signal-to-noise ratio that exceeds a predetermined threshold.