Patent ID: 8634919
Filing Date: 2014-01-21
Classification: A61N

Abstract:
1. An intra-cardiac implantable medical device (IIMD), comprising: a housing configured to be implanted entirely within a coronary sinus (CS) of the heart, the housing including opposed proximal and distal ends, the housing configured to be positioned at a first implant location within the CS such that the proximal end is directed toward an ostium (OS) and the distal end is directed toward vessels branching from the CS; a first intra-cardiac device extension (ICDE) having a first extension body that is electrically and physically attached to the proximal end of the housing, the first extension body including a first transition segment and a first active segment, the first transition segment adapted to extend along the CS toward the OS; a first electrode provided on the first active segment and configured to be positioned at a first activation site proximate to a first chamber of interest when the first extension body is in a fully deployed state; a second ICDE having a second extension body that is electrically and physically attached to the distal end of the housing, the second extension body including a second transition segment and a second active segment, the second transition segment adapted to extend along the CS away from the OS toward a vessel of interest; a second electrode provided on the second active segment and configured to be positioned at a second activation site proximate to a second chamber of interest when the second extension body is in a fully deployed state; and a controller, within the housing, configured to cause stimulus pulses to be delivered, in synchronous manner, through the first and second electrodes to the first and second activation sites, respectively.