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US 9,162,022 B2Granted
Oxygenator with integrated arterial filter including filter frame
AssigneesPolitecnico Di Milano, Sorin Group Italia S.r.l.
InventorsStefano Reggiani, Claudio Silvestri, Alberto Giri, Alberto Redaelli, Gianfranco Beniamino Fiore
Life of this patent
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Abstract
An oxygenator combines, in a single structure, a heat exchanger, a gas exchanger, an arterial filter, and a filter frame. Such an oxygenator permits fewer fluid connections and thus may simplify an extracorporeal blood circuit, including a heart-lung machine and a blood reservoir, in which it is used. In some embodiments, the oxygenator may be configured to include multiple purge ports for purging bubbles both before and after filtering the blood.
Claims12
A blood processing apparatus comprising:
- an apparatus housing having a blood inlet and a blood outlet, the blood inlet extending into an interior of the apparatus housing;
- a heat exchanger disposed about the blood inlet and in fluid communication therewith;
- a gas exchanger disposed about the heat exchanger and in fluid communication therewith;
- a filter housing coupled about the apparatus housing and defining a filter volume between the apparatus housing and the filter housing, the filter volume in fluid communication with the gas exchanger via one or more openings formed within the apparatus housing such that blood exiting the gas exchanger can pass into the filter volume;
- and
- a filter frame disposed within the filter housing, the filter frame having one or more ribs and a filter net disposed on the filter frame, the one or more ribs aligned with at least a portion of the one or more openings so as to reduce blood velocity through at least a portion of the filter net;
- wherein the filter frame has a first annular frame ring having a first diameter and a second annular frame ring having a second diameter greater than the first diameter.
4 more elements
Dependencies are inferred from the claim text.