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US 12,697,590 B2Granted
Diffusion device
AssigneeGambro Lundia AB
InventorsJoachim Loercher, Ralf Flieg, Torsten Knoer, Steffen Wagner, Christof Beck, Markus Loeffler
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Abstract
The present disclosure relates to a diffusion device, such as a blood oxygenator or gas exchanger, and a process for its production. The diffusion device is used in the removal of carbon dioxide from blood.
Claims7
A diffusion device comprising
- a tubular housing;
- a plurality of semi-permeable hollow fiber membranes arranged within the housing on a cylindrical core, the cylindrical core extending along a longitudinal axis of the tubular housing;
- end walls comprised of a polyurethane resin separating a flow space formed by a plurality of lumens of the hollow fiber membranes from a flow space on the outside of the hollow fiber membranes, the end walls adhering to an inner wall of the tubular housing;
- and
- end caps sealing a first mouth and a second mouth of the housing,
- characterized in that the cylindrical core has features which improve the adhesion of the end walls to the cylindrical core, namely, that the outer surface of the cylindrical core features a plurality of elongated noses which are parallel to the longitudinal axis of the cylindrical core and are located on the outer surface of the cylindrical core in a section of the cylindrical core where the end wall contacts the cylindrical core,
- wherein at least one circumferential ridge connecting the elongated noses is provided on the outer surface of the cylindrical core.
4 more elements
Dependencies are inferred from the claim text.