US 2020/0345919 A1Published application

Oxygenator and method for manufacturing the same

AssigneeTerumo Kabushiki Kaisha

InventorRyuji Hiraguchi

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Abstract

In manufacturing an oxygenator (10), an intermediate spacer (18) is arranged between an inner cylinder unit (13) configured by winding a first hollow fiber membrane (14a) and an outer cylinder unit (15) configured by winding a second hollow fiber membrane (16a) so that a first gap (100a) is formed between one end portions of the inner cylinder unit (13) and the outer cylinder unit (15), and a first partition section (62a) is inserted into the first gap (100a). A first end portion (18a) of the intermediate spacer (18) is located at a region which does not overlap the first partition section (62a) in a radial direction. The intermediate spacer (18) independently supports the outer cylinder unit (15) in a state in which a gap (Sa) is formed between an inner peripheral surface of the intermediate spacer (18) and an outer peripheral surface of the inner cylinder unit (13).

Claims15

Dependent claims

An oxygenator, comprising:

a housing;
an inner cylinder unit configured as one of a heat exchange unit or a gas exchange unit by winding a first hollow fiber membrane;
an outer 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 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 cylinder unit and the outer cylinder unit;
wherein the housing includes a pair of partition sections that partitions each of spaces on both sides in an axial direction from the inner cylinder unit and the outer 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 cylinder unit and the outer 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 cylinder unit and the outer cylinder unit;
and
wherein the intermediate spacer is configured to independently support the outer 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 cylinder unit.

6 more elements

A method for manufacturing an oxygenator including an inner cylinder unit configured as one of a heat exchange unit or a gas exchange unit and an outer cylinder unit configured as the other of the heat exchange unit or the gas exchange unit that are disposed to overlap each other in a radial direction, the method comprising the steps of:

a first winding step of forming the inner cylindrical unit by winding a first hollow fiber membrane on an outer surface of a core;
an arrangement step of arranging a cylindrical intermediate spacer on an outer surface of the inner cylindrical unit;
a second winding step of forming the outer cylindrical unit by winding a second hollow fiber membrane around an outer surface of the intermediate spacer;
an outer cylinder disposition step of disposing an outer cylinder so as to cover an outer surface of the outer cylindrical unit;
a cutting step comprised of cutting both end portions of the inner cylindrical unit and the outer cylindrical unit;
a sealing step of sealing outer sides of the first hollow fiber membrane and the second hollow fiber membrane at both end portions of the inner cylinder unit and the outer cylinder unit with a sealing member;
and
a mounting step of mounting cover members on both end portions of the core and the outer cylinder and forming a heat medium flow path and a gas flow path in the respective cover members;
wherein the intermediate spacer is configured to independently support the outer 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 cylinder unit;
wherein the intermediate spacer is arranged on an outer surface of the first cylindrical unit so that a gap is formed at least between one end portions of the inner cylinder unit and the outer cylinder unit or between the other end portions of the inner cylinder unit and the outer cylinder unit when performing the mounting step in the arrangement step;
and
wherein a partition section of the cover member is inserted into the gap formed by the intermediate spacer in the mounting step.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/933,230Filed 20 Jul 2020
Priority: 5 Feb 2018
Published: 5 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B01D 63/02
Apparatus in general for separation processes using semi-permeable membranes: hollow fibre modules
A61M 1/1625
Disposition or location of membranes relative to fluids: dialyser of the outside perfusion type, i.e. blood flow outside hollow membrane fibres or…
A61M 1/1629
Constructional aspects thereof: with integral heat exchanger
A61M 1/1698
With membranes: blood oxygenators with or without heat-exchangers