Patent ID: 8524090
Filing Date: 2013-09-03
Classification: A61M

Abstract:
1. A blood processing filter for removing undesirable components from blood, comprising; a flexible container, which has a blood inlet port and a blood outlet port; and a sheet-like filter element inside the flexible container for removing undesirable components from blood passing through the container, wherein the blood inlet port is separated from the blood outlet port by the sheet-like filter element, the sheet-like filter element comprising, a first filter element for removing aggregate from blood, a second filter element downstream of the first filter element to remove leukocytes, and a third filter element downstream of the second filter element adjacent to the blood outlet port and that allows passage of blood constituents, wherein said third filter element has having a Gas permeability per 1 cm thickness of 3-40 cc/cm2/sec and a thickness of 0.04-0.25 cm, and wherein said third filter element has a Gas permeability per 1 cm thickness which increases away from said second filter element towards said blood outlet port.