Selective treatment of endocardial/myocardial boundary

The present invention relates generally to interventional devices for medical procedures. More particularly, the invention relates to selective treatment of ischemic or infarcted myocardium, with mechanical and electromagnetic energy functional devices, for simulating extension of the boundary between myocardial and endocardial layers within the heart. The invention is particularly adapted for simulating extension of the endocardial layer into the myocardium and for treating hibernating tissue zones. A method for treating myocardium using at least one mechanical or electromagnetic energy functional device for forming a network of branched, interconnecting passages in a boundary between endocardium and myocardium, thereby enhancing blood flow into the treated zone, and a device for selectively treating ischemic myocardium tissue comprising a tube having proximal end and distal end, and at least one hollow lumen and defining an axis, at least two mechanical or electromagnetic energy functional devices disposed within the tube, the at least two mechanical or electromagnetic energy functional devices each having a distal end disposed adjacent the distal end of the central tube, and a deflecting member adjacent the distal portion of the central tube for deflecting the distal end of each of the at least two mechanical or electromagnetic energy functional devices away from the axis, for enabling treatment of selective areas of ischemic or hibernating myocardium tissue.