Artificial dialysis device

Abstract

A filter CFfor filtering dialysis fluid comprises the following: a housinginside of which a filter materialis accommodated and which is vertically long; an introduction portthat is disposed in the lower part of the housing and that introduces dialysis fluid from an upstream-side flow path; a filtered fluid lead-out portthrough which filtered dialysis fluid, which has passed through the filter material, is lead out from the upper part of the housing to a downstream-side flow path; and an unfiltered fluid lead-out portthrough which unfiltered fluid is lead out from the upper part of the housing to a waste fluid flow path. When removing the filter from a dialysis fluid circuit, fluid is suctioned from the inside of the housing via the upstream-side flow path by using fluid suction meansA, and a gas is caused to flow into the housing from at least either one of the waste fluid flow path and the downstream-side flow path by using gas inflow means. The fluid may be suctioned from the downstream-side flow path and the gas may be caused to flow in from the upstream-side flow path, or the fluid may be suctioned from the waste fluid flow path and the gas may be caused to flow in from the downstream-side flow path. Residual fluid in the filter can be reduced.