Patent ID: 9389023
Filing Date: 2016-07-12
CPC Classification: A61M,B01D,B29C,B29L,F28D,Y10T

Claim Text:
1. An extracorporeal blood circuit apparatus for performing heat exchange comprising: a housing defining: a blood flow path from a blood inlet to a blood outlet, and a heat exchange fluid pathway from a heat exchange inlet to a heat exchange outlet; a capillary tube bundle disposed within the housing and including: a core defining a cylindrical outer surface having a central axis, a first core end, a second core end opposite the first core end, and a length between the core ends in a direction of the central axis, a plurality of fluid impermeable capillary tubes disposed about the outer surface to define a plurality of capillary layers, wherein: the capillary tubes of each layer are substantially circumferentially aligned relative to the central axis and each successive layer is radially outward of an immediately preceding layer, each of the capillary tubes is non-parallel with the central axis, traversing a majority of the core length from a first open end adjacent the first core end to a second open end adjacent the second core end, each of the capillary tubes spirals partially about the central axis in extension from the corresponding first open end to the corresponding second open end by less than 360°, and an orientation of the capillary tubes in a first one of the layers differs from an orientation of the capillary tubes in a second one of the layers; a first band disposed about the first open end of each of the capillary tubes, the first open ends being fluidly open to one of the blood inlet and the heat exchange inlet; and a second band disposed about the second open end of each of the capillary tubes, the second open ends being fluidly open to one of the blood outlet and the heat exchange outlet.