PROBLEM TO BE SOLVED: To provide a three-way passage port and a dialyzer which allow favorable washing.SOLUTION: A fluid replacement port 11 including an inlet passage C1, an outlet passage C2, and a branch passage C3 as well, includes a regulation member 35 that partitions at least a part of a connecting area R for connecting the inlet passage C1 and the outlet passage C2, and guides at least part of liquid from the inlet passage C1 to the outlet passage C2, to a detour C4 passing through the inside of the branch passage C3.COPYRIGHT: (C)2013,JPO&INPIT【課題】洗浄を良好に行うことができる三方流路ポート及び透析装置を提供する。【解決手段】補液ポート11は、入口流路C1と出口流路C2との他に分岐流路C3を有し、入口流路C1と出口流路C2とを連絡する連絡領域Rの少なくも一部を仕切り、入口流路C1から出口流路C2に至る液体の少なくとも一部を、分岐流路C3内を通る迂回路C4に導く規制部材35を備える。【選択図】図3
