Patent ID: 8865067

Claim:
A combination oxygenator and arterial filter device for treating blood in an extracorporeal blood circuit, the device comprising: a housing; an oxygenator maintained within the housing and including a plurality of hollow microporous fibers helically wound about an internal core to define an oxygenator bundle forming an oxygenator exterior face; and a depth filter disposed directly over the oxygenator exterior face, the depth filter including a plurality of filaments arranged to define a first filter layer of level wound filaments directly abutting the oxygenator exterior face and a second filter layer of level wound filaments directly abutting the first filter layer opposite the oxygenator exterior face; wherein a structure of the oxygenator bundle differs from a structure of the depth filter by at least one characteristic selected from the group consisting of: materials of the fibers and filaments, construction of the fibers and the filaments, and minimum gap spacings between axially adjacent ones of the fibers and axially adjacent ones of the filaments.