Oxygenator of a hollow fiber membrane type
AssigneeToyo Boseki Kabushiki Kaisha
InventorsYuta Kawakatsu, Hidenori Tanaka, Susumu Kashiwabara
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Abstract
The invention provides an oxygenator of a hollow fiber membrane type where a plurality of hollow fiber membranes are received in a housing, wherein at least a part of the regions of the hollow fiber membranes to contact blood during use is coated with a water-insoluble (meth)acrylate copolymer in which a hydrophobic (meth)acrylate is copolymerized with a hydrophilic (meth)acrylate at a molar ratio of (50 to 90):(50 to 10).
Claims20
An oxygenator comprising a plurality of hollow fiber membranes positioned in a housing, wherein at least a part of the hollow fibers membranes to contact blood during use is coated with a (meth)acrylate copolymer formed by the copolymerization of a hydrophobic (meth)acrylate with a hydrophilic (meth)acrylate at a molar ratio of (50 to 90):(50 to 10), wherein the (meth)acrylate copolymer is water-insoluble to the extent that, when 1% by weight of the (meth)acrylate copolymer is allowed to stand for 30 days in 99% by weight of a physiological saline solution of 37° C., the (meth)acrylate copolymer is not reduced in weight by more than 1%.
Dependencies are inferred from the claim text.