Patent ID: 8961791
Filing Date: 2015-02-24
Classification: A61B,A61M

Abstract:
1. A molecular exchange device comprising: an outer tube extending from a proximal end to a distal end of the device; an inner tube defining at least one fluid passageway, the inner tube positioned concentrically within the outer tube and the area between the inner and the outer tube defining at least one fluid passageway; and a projection positioned within the area between the inner and the outer tube, wherein the projection prevents displacement of the inner tube with respect to the outer tube; wherein at least a portion of the outer tube comprises a porous membrane that allows molecules in an external fluid to migrate across the porous membrane into the fluid passageway between the inner and outer tubes and molecules in a fluid within the fluid passageway between the inner and outer tubes to migrate across the porous membrane into an external fluid; wherein the inner tube has a circumference and the projection is a porous mesh positioned around the circumference of the inner tube; wherein the projection extends from the inner tube.