1. A blood container system (10a, 10b, 10c) comprising: a first bag (54) for reserving whole blood or a blood component; a filter (56) having a filter medium (57) for removing desired cells from a blood component obtained by centrifuging the liquid contained in the first bag (54); the second bag (58) to reserve the blood component obtained after removing the specified cells with a filter (56); the first tube (60) for connecting the first bag (54) to the inlet of the filter ( 56); a second tube (62) for connecting the second bag (58) to one filter pipe (56) and a cassette (50a, 50b, 50c) having a plate section (100) for holding part of the first tube (60) and part of the second tube (62), while the cartridge (50a, 50b, 50c) includes a mount (142) for holding the filter (56), as well as a hinge section (140), with which the mount (142) is connected to the plate section (100) with the possibility of tilt. 2. The system (10a, 10b, 10c) according to claim 1, in which the hinge section (140) is tilted so as to take on various states, including an unfolded state, in which the mount (142) or filter (56) are located essentially in on the same plane as the plate section (100), as well as the inclined state in which the mount (142) or filter (56) are inclined substantially perpendicular to the plate section (100) .3. The system (10a, 10b, 10c) according to claim 2, in which the hinge section (140) has a stopper (148) by which the angle of inclination of the mount (142) or filter (56) relative to the plate section (100) is essentially limited to a right angle. 4. The system (10a, 10b, 10c) according to claim 2, in which the filter (56) is in the form of a plate with a first surface and a second surface with an opposite1. Контейнерная система (10a, 10b, 10c) для крови, содержащая:первый мешок (54) для резервирования цельной крови или компонента крови;фильтр (56), имеющий фильтрующую среду (57) для удаления заданных клеток из компонента крови, полученного путем центрифугирования