Patent ID: 6582388
Filing Date: 2003-06-24
Classification: A61B

Abstract:
A medical device assembly for aspirating a volume of venous blood from at least one of a superior or inferior vena cava adjacent to a heart while substantially isolating a right ventricle of the heart from the vena cavae, the heart including the right ventricle, a right atrium, and a sinus venarum through which the vena cavae communicate with the right atrium, the assembly comprising:an elongate body with a proximal end portion, a distal end portion, and a flow lumen that extends between a distal flow port located along the distal end portion and a proximal flow port located along the proximal end portion, the distal end portion being adapted for retrograde percutaneous transluminal delivery into a region of the vena cavae adjacent to the sinus venarum such that the distal flow port is positioned within the superior vena cava, and the proximal flow port being adapted to couple to an inlet port of a cardiopulmonary bypass pump; an external valve which is located along the distal end portion proximally of the distal flow port and which is adjustable from a closed position, which is adapted to allow a volume of venous blood to flow from the superior vena cavae, through the sinus venarum into the right atrium, and into the right ventricle, to an open position, which is adapted to substantially isolate the right ventricle from the superior and inferior vena cavae without circumferentially engaging an interior surface of either of the superior or inferior vena cavae; and an external valve actuator with a proximal end portion and a distal end portion that is coupled to the external valve, and which is adapted to selectively adjust the external valve between said open and closed positions.