BLOOD OXYGENATOR
First Claim
1. An oxygenator comprising:
- a first polymer layer comprising a first plurality of gas channels and a first plurality of fluid channels;
a second polymer layer comprising a second plurality of gas channels and a second plurality of fluid channels, each of the second plurality of gas channels overlapping one of the first plurality of fluid channels and each of the second plurality of fluid channels overlapping one of the first plurality of gas channels;
a third polymer layer comprising a third plurality of gas channels and a third plurality of fluid channels, each of the third plurality of gas channels overlapping one of the second plurality of fluid channels and each of the third plurality of fluid channels overlapping one of the second plurality of gas channels; and
a plurality of gas vias defined in the second polymer layer, each of the plurality of gas vias coupling one of the first plurality of gas channels to one of the third plurality of gas channels.
1 Assignment
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Accused Products
Abstract
The present disclosure describes a blood oxygenator that includes a checkerboard layout of fluid (e.g., blood) and gas (e.g., oxygen) channels. When viewed as a cross-section through each of the channels of the oxygenator, the checkerboard configuration includes alternating gas and fluid channels in both the x-axis (e.g., in-plane) and in the y-axis (e.g., out-of-plane) directions. The oxygenator described herein reduces manufacturing complexity by using first, second, and third polymer layers that include asymmetrical channel designs. The channel designs include “open” gas channels, which are exposed to the ambient atmosphere. The oxygenator is placed within a pressure vessel to drive gas into each of the open gas channels, which in some implementations, negates the need for a gas manifold.
7 Citations
28 Claims
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1. An oxygenator comprising:
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a first polymer layer comprising a first plurality of gas channels and a first plurality of fluid channels; a second polymer layer comprising a second plurality of gas channels and a second plurality of fluid channels, each of the second plurality of gas channels overlapping one of the first plurality of fluid channels and each of the second plurality of fluid channels overlapping one of the first plurality of gas channels; a third polymer layer comprising a third plurality of gas channels and a third plurality of fluid channels, each of the third plurality of gas channels overlapping one of the second plurality of fluid channels and each of the third plurality of fluid channels overlapping one of the second plurality of gas channels; and a plurality of gas vias defined in the second polymer layer, each of the plurality of gas vias coupling one of the first plurality of gas channels to one of the third plurality of gas channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of manufacturing an oxygenator, the method comprising:
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defining a first plurality of gas channels and a first plurality of fluid channels in a first polymer layer; defining a second plurality of gas channels, a second plurality of fluid channels, and a plurality of gas vias in a second polymer layer; defining a third plurality of gas channels and a third plurality of fluid channels in a third polymer layer; rotating the second polymer layer with respect to the first and third polymer layers; aligning each of the plurality of gas vias with an inlet of each of the first plurality of gas channels and with an inlet of each of the third plurality of gas channels; coupling the first polymer layer the second polymer layer; and coupling the third polymer layer to the second polymer layer. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification