Gas exchanger and artificial lung

  • US 9,138,522 B2
  • Filed: 07/15/2014
  • Issued: 09/22/2015
  • Est. Priority Date: 07/16/2013
  • Status: Active Grant
First Claim
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1. A gas exchange unit for processing blood that includes blood cells and plasma, the gas exchange unit comprising:

  • a substrate having a first side and a second side;

    a plurality of nanotubes disposed on the second side of the substrate with spaces between the nanotubes, wherein the nanotubes are disposed on the substrate in a configuration that leaves a plurality of blood flow channels that are surrounded by the nanotubes, each of the channels having an inflow end and an outflow end, wherein each of the channels is wide enough for the blood to flow through, and wherein the nanotubes are spaced close enough to each other to retain the plasma within the channels when the blood is flowing through the channels, and wherein the substrate has a plurality of perforations that extend between the first side of the substrate and the second side of the substrate, each of the perforations being aligned with a respective one of the channels;

    a blood inlet configured to supply blood to the first side of the substrate, wherein the blood inlet is in fluid communication with the perforations such that blood that arrives via the blood inlet will flow through the perforations and continue on through the channels;

    a blood outlet configured to accept blood that arrives from the outflow end of the channels; and

    a housing configured to house the substrate and the array of nanotubes, the housing having a gas inlet configured to route a gas into the spaces between the nanotubes and a gas outlet configured to route the gas away from the spaces between the nanotubes.

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