Patent ID: 6350252
Filing Date: 2002-02-26
Classification: A61B,A61M

Abstract:
A device for occluding a patient's aorta, the device comprising:a cannula having a lumen extending through at least a portion of the cannula; a source of oxygenated blood coupled to the lumen which provides bypass support for the patient; an occluding member provided on the cannula and movable between a collapsed orientation and an expanded orientation, the occluding member being sized and configured to occlude a patient's aorta when in said expanded orientation; wherein the occluding member comprises a non-inflatable structure which moves mechanically from one of said collapsed and expanded orientations to the other of said orientations, the non-inflatable structure having an exterior that is at least substantially impervious to fluid to prevent fluid flow through a patient's aorta when the occluding member is positioned in the aorta in said expanded orientation, the occluding member being generally cylindrically-shaped when in said collapsed orientation and generally bell-shaped when in said expanded orientation; wherein the non-inflatable structure includes a plurality of individual support elements which move relative to each other as the occluding member moves between said collapsed and expanded orientations; and an actuator for moving the occluding member from one of said collapsed and expanded orientations to the other of said orientations; wherein substantially the entire occluding member is disposed inside the lumen of the cannula when the occluding member is in said collapsed orientation, and substantially the entire occluding member is disposed outside of the lumen of the cannula when the occluding member is in said expanded orientation.