FILTRATION FILTER

摘要

Provided is a filtration filter capable of mitigating the stress applied to a filter and suppressing damage to the filter. This filtration filter for separating a substance to be filtered in a liquid is equipped with: a porous membrane comprising a membrane section that has a plurality of through-holes, and an end section adjacent to the membrane section; and a support section for supporting the end section in a manner such that the end section of the porous membrane moves in the thickness direction of the porous membrane, and the membrane section itself moves in the direction opposite the direction in which the end section moves. Such a configuration makes it possible for this filtration filter to mitigate the stress applied to the membrane section by allowing the membrane section to bend as a result of movement of the end section of the porous membrane in the thickness direction.