Disclosed are a device, a system, and a method for obtaining more than one target fluid component using a back-flushable filter device with a filter and at least one dispersing plate. The filter device includes a housing, a porous fibrous leukocyte removal filter located inside the housing, and a firstly perforated dispersing plate located inside the housing.필터 및 적어도 하나의 분산판을 포함하는 백플러쉬 가능한(back-flushable) 필터 장치를 사용하여 1종 이상의 목적하는 유체 성분을 수득하는 장치, 시스템, 및 방법이 개시된다.