Cardiac bypass catheter system and method of use

A medical device assembly for selectively shunting antegrade blood flow from an aortic root in an aorta of an animal and into a proximal region of the aorta which is located proximally of the aortic root, the aorta further including an aortic wall, comprising:

• an elongate body with a proximal end portion, a distal end portion, and a flow lumen which extends between a distal flow port located along the distal end portion of the elongate body and an intermediate flow port located along the distal end portion of the elongate body proximally of the distal flow port such that the intermediate flow port is adapted to be positioned within the proximal region of the aorta when the distal flow port is positioned within the aortic root;
• an external shunt valve which is located along the elongate body between the proximal and distal flow ports, which includes an anchor and a funnel, and which is adjustable between an open position and a shunting position;
• an actuator with a proximal end portion and a distal end portion that is coupled to the external shunt valve, and which is adapted to selectively adjust the external shunt valve between the open and shunting positions such that in the open position the anchor and funnel are adapted to allow passage of the antegrade blood flow through an exterior space between the distal end portion of the elongate body and the aortic wall, and wherein in the shunting position the anchor is adapted to radially engage the aortic wall such that the distal end portion of the elongate body is secured at a predetermined location along the aorta, and the funnel is adapted to substantially shunt the antegrade blood flow from the aortic root, into the flow lumen through the distal flow port, out of the flow lumen through the intermediate flow port, and into the proximal region of the aorta while substantially isolating the antegrade blood flow from the exterior space;
• said elongate body further comprising a proximal flow port located along the proximal end portion of said elongate body where said flow lumen communicates exteriorly of said elongate body;
• a cannula member having a distal end, a proximate end, and an axis of elongation slidably carried at least in part within said flow lumen where said distal end is selectively positionable within said flow lumen;
• an expandable valve member carried by said cannula member adjacent said distal end of said cannula member and so adapted to permit selective adjustment between respective open and closed positions whereby adjusting said expandable valve to the closed position when said expandable valve is positioned within said flow lumen between the distal end of said elongate member and said intermediate flow port, said intermediate flow port and said proximate flow port are in fluid communication and isolated from said distal flow port;
• and
• whereby adjusting said expandable valve to the closed position where said expandable valve is positioned within said flow lumen between said proximate flow port and said intermediate port, said intermediate port and said distal flow port are in fluid communication and isolated from said proximal flow port.

A medical device assembly for selectively shunting a volume of blood from an aortic root of an aorta in an animal and into the proximal region of the aorta, the aorta further including an aortic wall, comprising:

• an elongate body with a proximal end portion, a distal end portion, and a flow lumen which extends between a distal flow port located along the distal end portion and an intermediate flow port located along the distal end portion proximally of said distal flow port;
• a cannula member having a distal end and an axis of elongation slidably carried at least in part within said flow lumen where said distal end of said cannula member is selectively positionable within said flow lumen;
• an expandable valve member carried by said cannula member selectively positionable within said flow lumen and so adapted to permit selective adjustment between respective open and closed positions,
• an expandable valve actuator coupled to said expandable valve member so constructed and adapted to selectively permit adjustment of said expandable valve member between the open and closed positions;
• such that when said expandable valve member is positioned within said flow lumen between said intermediate flow port and said proximal port and said expandable valve member is adjusted to the closed position;
• said distal flow port is in fluid communication with said intermediate port isolating said proximal port from fluid flow through said flow lumen, and where said expandable valve member is positioned between said intermediate port and said distal port, said intermediate and proximate port are in fluid communication when said expandable valve is adjusted to the closed position and said distal port is isolated from fluid flow within said flow lumen.