PROBLEM TO BE SOLVED: To provide a blood flow adjustment device that is implanted in a body and can easily open and close an internal shunt.SOLUTION: A blood flow adjustment device 10 comprises: a first member 21 including a magnetic substance 25 a second member 22 arranged so that an internal shunt 90 can be pinched between the second member 22 and the first member 21, and including a magnet 31 a guide member 23 that positions the magnetic substance 25 opposite to the magnetic 31 and supports the second member 22 movably in a direction that brings the second member 22 closer to or away from the first member 21 and a magnetic member 50 that applies a magnetic force stronger than that of the magnet 31 to the magnetic substance 25 and moves the second member 22 in a direction that separates the second member 22 away from the first member 21.COPYRIGHT: (C)2016,JPO&INPIT【課題】体内に埋め込まれて内シャントを容易に開閉可能な血流量調節装置を提供する。【解決手段】血流量調節装置10は、磁性体25を有する第1部材21と、第1部材21との間に内シャント90を挟持可能に配置されており、磁石31を有する第2部材22と、磁性体25及び磁石31を対向させて、第2部材22を第1部材21に対して接離する方向に移動可能に支持するガイド部材23と、磁石31より大きな磁力を磁性体25へ作用させて第2部材22を第1部材21から離間する方向に移動させる磁力部材50と、を具備する。【選択図】図3