Back to results
US 8,795,220 B2Granted
Blood processing unit with circumferential blood flow
AssigneesPolitecnico Di Milano, Sorin Group Italia S.r.l.
InventorsStefano Reggiani, Gianfranco Beniamino Fiore, Alberto Giri, Alberto Redaelli, Claudio Silvestri, Gabriele Tommasi
Life of this patent
Estimating the term…
Abstract
A blood processing apparatus may include a heat exchanger and a gas exchanger. At least one of the heat exchanger and the gas exchanger may be configured to provide a circumferential blood flow through the heat exchanger and/or gas exchanger.
Claims13
A blood processing apparatus comprising:
- a housing having a blood inlet and a blood outlet, the blood inlet extending into an interior of the housing;
- a core arranged coaxially within the housing, the core having a core interior in fluid communication with the blood inlet, the core including an outer surface and only a single elongate core aperture formed within the outer surface and extending generally parallel to a core longitudinal axis, the elongate core aperture configured to permit blood to exit from the core interior such that all blood exiting the core interior exits through the elongate core aperture;
- heat exchanger hollow fibers disposed about the core such that a heat exchanger fluid may flow through the heat exchanger hollow fibers and blood passing from the elongate core aperture may flow across the heat exchanger hollow fibers;
- a cylindrical shell arranged coaxially about the heat exchanger hollow fibers, the cylindrical shell including an elongate shell aperture configured to permit blood to exit from the cylindrical shell such that all blood exiting the cylindrical shell exits through the elongate shell aperture;
- and
- gas exchanger hollow fibers disposed about the inner cylindrical shell such that gases may flow through the gas exchange hollow fibers and blood passing from the elongate shell aperture may flow across the gas exchanger hollow fibers and towards the blood outlet;
- wherein the shell aperture is disposed at a location substantially diametrically opposite the location of the core aperture, such that blood flows across the heat exchanger hollow fibers is substantially circumferential
- wherein the blood outlet is disposed at a location diametrically opposite the location of the shell aperture, such that blood passing from the shell aperture to the blood outlet is substantially circumferential.
5 more elements
A blood processing apparatus comprising:
- an outer housing having a blood inlet and a blood outlet;
- a heat exchanger core arranged within the housing and having a core interior in fluid communication with the blood inlet, the heat exchanger core including an outer surface and only a single elongate core channel formed through the outer surface such that blood may exit from the core interior with a generally circumferential flow configuration such that all blood exiting the heat exchanger core interior exits through the elongate core channel;
- heat exchanger hollow fibers disposed about the heat exchanger core such that a heat exchanger fluid may flow through the heat exchanger hollow fibers and blood exiting from the core channel may flow across the heat exchanger hollow fibers;
- a cylindrical shell arranged coaxially about the heat exchanger hollow fibers, the cylindrical shell including an elongate shell channel formed within an inner surface of the shell, at a circumferential location generally opposite a location of the elongate core channel, and a radially disposed shell aperture disposed near an end opposite the blood outlet, wherein the elongate shell channel and the shell aperture are in fluid communication, such that blood passing over the heat exchanger hollow fibers flows into the elongate shell channel and exits the cylindrical shell through the shell aperture such that all blood exiting the cylindrical shell exits through the radial shell aperture;
- gas exchanger hollow fibers disposed about the cylindrical shell such that gases may flow through the gas exchange hollow fibers and blood passing from the cylindrical shell may flow across the gas exchanger hollow fibers towards the blood outlet in a longitudinal flow path.
2 more elements
Dependencies are inferred from the claim text.