MECHANICAL MYOCARDIAL RESTRAINT DEVICE

摘要

A transvenously deployed myocardial restraint device provides mechanical restraint of a dilated left ventricle and improves heart function. The device includes a delivery wire with a restraining coil that is straightened for percutaneous delivery to the heart and recoiled once positioned in a pericardial space adjacent a ventricular heart wall. Alternatively, a balloon on the end of the delivery wire is delivered similarly to the coil and is then inflated in the pericardial space to restrain the dilated portion of the left ventricle. A trailing end of the coil forms a tether that is anchored to the left ventricular free wall and to the ventricular septum by an intraventricular septal anchor and connected by the tether through the ventricular septum using the same delivery system.

主权项

1. A myocardial restraint device comprising:
a restraining wire that is adapted for transvenous delivery to the left ventricle of the heart and then into pericardial space adjacent to an external left ventricular heartwall, a trailing end of said wire forming a tether; an anchor that holds said restraining wire taut against said external left ventricular heart wall when a force is applied to a proximal end of the restraining wire; an intraventricular septal anchor that anchors the tether to the ventricular septum; and a locking mechanism that locks the anchor to the tether, wherein a distance between the ventricular septum and the ventricular heart wall where the restraining wire is positioned is shortened by tightening the tether connecting the restraining wire to the septal anchor.