Patent ID: 7264607
Filing Date: 2007-09-04
Classification: A61M

Abstract:
1. A circuit for extracorporeal blood circulation comprising: a blood withdrawal line for taking blood from a patient, having: a blood return line for returning treated blood to the patient, having: at least one arterial chamber arranged on the blood withdrawal line between said pump portion and said second outlet end of the withdrawal line, and configured to contain a first blood storage volume; at least one venous chamber arranged on the blood return line and configured to contain a second blood storage volume, said at least one arterial chamber and said at least one venous chamber being solidly joined one to the other into an integrated structure including a stiff material, said integrated structure having an arterial inlet connection and an arterial outlet connection in fluid connection with the arterial chamber, and a venous inlet connection and a venous outlet connection in fluid connection with the venous chamber, said integrated structure being equipped inside with at least a first duct connecting a first of said arterial inlet connection, arterial outlet connection, venous inlet connection, or venous outlet connections to a first of said arterial and venous chambers, at least a part of said first duct passing through at least a part of a central portion of the integrated structure in which the arterial and venous chambers are placed one beside the other, said first duct having at least a length extending mainly in a vertical direction with reference to an operating configuration of the circuit, and arranged between the arterial and venous chambers, said integrated structure being further equipped inside with at least a second duct which puts into fluid connection a second of said arterial inlet connection, arterial outlet connection, venous inlet connection, or venous outlet connections with the first of said arterial and venous chambers, at least a part of a pathway followed by said second duct is parallel to at least a part of a pathway followed by said first duct, said integrated structure having at least a pair of pump portion connections connected to two opposite ends of a pump portion of the blood return line, said pair of pump portion connections being configured to be coupled with a pump, said integrated structure being further equipped inside with a first connection cavity, putting into fluid communication at least one of said pair of pump portion connections with the venous chamber, and a second connection cavity, putting into fluid communication at least one of said pump portion connections with the venous outlet connection attached to the integrated structure; and, a second venous chamber arranged on said blood return line downstream from said first of said arterial and venous chambers; a second arterial chamber arranged on said blood withdrawal line upstream from the pump portion on the withdrawal line; said second arterial and venous chambers being solidly joined with one another to form a box-shaped structure, said box-shaped structure being separate from said integrated structure.