Filter apparatus and method of separating micro-tissues of an organism using said filter apparatus

摘要

A filter apparatus (1B) is formed by a housing (2), a filter member (5) disposed in the housing (2), flow-passage maintaining members (6a and 6b) disposed on the two sides of the filter member (5), screw thread portions (32) and thread grooves (44) which are a porosity changing unit. The housing (2) is formed by a first housing member (3) having a first port (31) and a second housing member (4) having a second port (41). The filter member (5) is formed by stacking a plurality of porous polymer sheets (51). It is preferable that the porous polymer sheets (51) have gradient of physical or chemical characteristic in a direction of stacking. By operating the porosity changing means, the filter member (5) is set to a compressive state or a non-compressive state. In the compressive state, a first porosity capable of capturing the objective cells is set. In the non-compressive state, a second porosity which is higher than the first porosity is set.