Patent ID: 6689278
Filing Date: 2004-02-10
Classification: A61M,B01D,C02F

Abstract:
A combined hydrophobic-hydrophilic filter for fluids, which comprises:an encasement having an inlet and an outlet; one or more hydrophilic filters; one or more hydrophobic filters arranged in fluid communication and serially with said hydrophilic filters; and a spacer located between said hydrophilic filter or filters and said hydrophobic filter or filters, wherein the dimensions of said filter or filters and said spacer perpendicular to the intended direction of fluid flow decrease the farther such filter or filters and said spacer are located downstream with respect to the intended direction of fluid flow to a sufficient extent that, as the stream of fluid expands perpendicularly to its intended direction of flow, the possibility of the fluid contacting any solid element other than a filter is increased.