US 12,115,499 B2
Oxygenator and method for manufacturing the same
Ryuji Hiraguchi, Elkton, MD (US)
Assigned to Terumo Kabushiki Kaisha, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 20, 2020, as Appl. No. 16/933,230.
Application 16/933,230 is a continuation of application No. PCT/JP2018/003720, filed on Feb. 5, 2018.
Application 16/933,230 is a continuation of application No. PCT/JP2019/003958, filed on Feb. 5, 2019.
Prior Publication US 2020/0345919 A1, Nov. 5, 2020
Int. Cl. B01D 63/02 (2006.01); A61M 1/16 (2006.01); A61M 1/36 (2006.01); B01D 65/00 (2006.01); B01D 69/08 (2006.01)
CPC B01D 63/02 (2013.01) [A61M 1/1625 (2014.02); A61M 1/1629 (2014.02); A61M 1/1698 (2013.01); A61M 1/3623 (2022.05); B01D 65/003 (2013.01); B01D 69/08 (2013.01); A61M 2207/10 (2013.01); B01D 2313/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An oxygenator, comprising:
a housing comprising a core, an outer housing cylinder, and first and second cover members attached to end portions of the core and the outer housing cylinder;
an inner wound cylinder unit configured as one of a heat exchange unit or a gas exchange unit by winding a first hollow fiber membrane;
an outer wound cylinder unit configured as the other of the heat exchange unit or the gas exchange unit by winding a second hollow fiber membrane, wherein the inner and outer wound cylinders are accommodated in the housing overlapping each other in a radial direction so that a blood flow path is formed on an outer side of the first hollow fiber membrane and an outer side of the second hollow fiber membrane; and
a cylindrical intermediate spacer arranged between the inner wound cylinder unit and the outer wound cylinder unit;
wherein the housing includes a pair of partition sections extending axially from the first and second cover members that partitions each of spaces on both sides in an axial direction from the inner wound cylinder unit and the outer wound cylinder unit into a heat medium flow path and a gas flow path, and wherein the partition sections are each inserted between end portions of the inner wound cylinder unit and the outer wound cylinder unit;
wherein at least one end portion of the intermediate spacer is located at a region that does not overlap the partition section in a radial direction in end portions of the inner wound cylinder unit and the outer wound cylinder unit; and
wherein the intermediate spacer is configured to independently support the outer wound cylinder unit in a state in which a gap is formed between an inner peripheral surface of the intermediate spacer and an outer peripheral surface of the inner wound cylinder unit.