Compact integrated blood pump oxygenator or gas transfer device with hydrogel impeller packing material and rollover impeller outlet

摘要

An integrated blood pump oxygenator comprises an impeller housing supporting an impeller with an annular hydrogel impeller packing material adjacent the bearings and around the shaft of the impeller. The oxygenator including a rollover outlet in the form of an annular chamber extending around a center pump housing member; and further including an annular chamber within an annular array of hollow fiber membranes in fluid communication with the annular chamber extending from the impeller around the center pump housing; wherein the annular chamber provides substantially perpendicular radial outward cross flow across the membranes.