Oxygenator and method for manufacturing oxygenator
AssigneeTerumo Kabushiki Kaisha
InventorYoji Iwase
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Abstract
An oxygenator (10) has a hollow fiber module (19), a cylindrical outer tube (22) that accommodates the hollow fiber module (19), and a sealing structure (82a, 82b) that seals a gap between an outer peripheral portion of the hollow fiber module (19) and an inner peripheral portion of the outer tube (22). The sealing structure (82a, 82b) includes an anchor structure (84a, 84b) that is formed on the outer tube (22) on an inner peripheral side near the end defining a groove recessed in an axial direction of the outer tube (22), a cutout portion (88) formed by cutting out the anchor structure (84a, 84b) on the inner peripheral side, and a sealing material (86a, 86b) with which the anchor structure (84a, 84b) and the gap are filled.
Claims14
An oxygenator comprising:
- a hollow fiber module having a plurality of hollow fiber membranes in a cylindrical arrangement;
- an outer tube that is cylindrical and that accommodates the hollow fiber module with a gap between the outer tube and hollow fiber module, wherein a sealing structure is provided at an end of the outer tube which comprises an anchor structure having a groove in the outer tube disposed along an inner peripheral side of the outer tube;
- and
- a sealing material disposed in the gap and in the anchor structure, wherein the sealing material is introduced as a liquid in a flow into the groove and then cures in the groove;
- wherein the groove is recessed in an axial direction of the outer tube so that the sealing material and anchor structure are interlocking;
- and
- wherein the groove further defines a cutout portion formed by cutting out the groove of the anchor structure on the inner peripheral side, and wherein the cutout portion is disposed at a region other than a region where the flow of sealing material is introduced.
A method for manufacturing an oxygenator that includes a hollow fiber module having a plurality of hollow fiber membranes in a cylindrical arrangement, an outer tube that is cylindrical and that accommodates the hollow fiber module with a gap between the outer tube and the hollow fiber module, and a sealing structure at an end of the outer tube which comprises an anchor structure having a groove recessed in an axial direction of the outer tube, wherein the groove defines a cutout portion formed by cutting out the groove of the anchor structure on the inner peripheral side, the method comprising the steps of:
- accommodating the hollow fiber module into the outer tube;
- and
- filling the groove and the gap between the outer tube and the hollow fiber module with a sealing material introduced at a introduction region while applying a centrifugal force in the axial direction of the outer tube so that the sealing material flows from the introduction region to the cutout portion.
A method for manufacturing an oxygenator comprising the steps of:
- forming a hollow fiber module having a plurality of hollow fiber membranes in a cylindrical arrangement;
- forming an outer tube that is cylindrical, wherein the outer tube defines a sealing structure at an end of the outer tube which comprises an anchor structure having a groove recessed in an axial direction of the outer tube, wherein the groove defines a cutout portion formed by cutting out the groove of the anchor structure on the inner peripheral side;
- accommodating the hollow fiber module into the outer tube with a gap between the outer tube and hollow fiber module;
- and
- filling the groove and the gap between the outer tube and the hollow fiber module with a sealing material introduced at a introduction region while applying a centrifugal force in the axial direction of the outer tube so that the sealing material flows from the introduction region to the cutout portion.
Dependencies are inferred from the claim text.