发明名称 |
Filter member and oxygenator using same |
摘要 |
A filter member used in an oxygenator is constructed to provide improved contact with a hollow fiber membrane bundle and to capture bubbles contained in blood. The filter member possesses elasticity at least in the circumferential direction to allow the inner circumference of the filter member to be increased from a natural non-expanded state prior to placement on the hollow fiber membrane bundle to an expanded state in which the inner circumference of the filter member is increased when placed on the hollow fiber membrane bundle. The filter member is constructed to satisfy the condition 0.5≦L2/L1<1, wherein L1 represents the outer circumference of the hollow fiber membrane bundle and L2 represents the inner circumference of the filter member in the natural non-expanded state. |
申请公布号 |
US9522362(B2) |
申请公布日期 |
2016.12.20 |
申请号 |
US201514926446 |
申请日期 |
2015.10.29 |
申请人 |
TERUMO KABUSHIKI KAISHA |
发明人 |
Mizoguchi Kazuhiro;Kato Eiji |
分类号 |
A61M1/16;B01D63/02;A61M1/36;A61M1/34;B32B37/12;B32B37/14;B01D63/04 |
主分类号 |
A61M1/16 |
代理机构 |
Buchanan Ingersoll & Rooney PC |
代理人 |
Buchanan Ingersoll & Rooney PC |
主权项 |
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. |
地址 |
Shibuya-Ku, Tokyo JP |