Patent ID: 9522362
Filing Date: 2016-12-20
CPC Classification: A61M,B01D,B32B,Y10T

Claim Text:
1. A method of making a filter arrangement configured to be positioned in a housing of an oxygenator, comprising: rolling a sheet of filter material into a rolled cylindrical filter member; joining opposite edges of the sheet material together at a joint after rolling the sheet of filter material into the cylindrical filter member; and after the sheet of filter material has been rolled into the rolled cylindrical filter member, placing the rolled cylindrical filter member over an outer periphery of a hollow fiber membrane bundle to closely contact the outer periphery of the hollow fiber membrane bundle, wherein the hollow fiber membrane bundle is comprised of a plurality of integrated hollow fiber membranes that are formed of polymer material and are transmissive to gas, wherein the sheet of filter material is formed by crossing a warp thread and a weft thread with each other such that, when the cylindrical filter member is formed, the warp threads or the weft threads are inclined at an angle other than zero degrees relative to a plane that is perpendicular to a longitudinal axis of the cylindrical filter member, and wherein the joint extends in a direction substantially parallel to the warp thread or the weft thread.