FLOW CHANNEL DEVICE

To provide a flow channel device capable of increasing a capacity of a flow channel per unit volume of a flow channel structure even when the arrangement of confluent flow channels connected to confluent parts is restricted due to the arrangement of the plurality of confluent parts in the flow channel structure.SOLUTION: A flow channel structure 2 of a flow channel device 1 is such that: first flow channel confluent flow channels 30 of a plurality of first flow channels 21 include the plurality of first flow channel confluent flow channels 30 aligned along a second substrate surface 18a of each second substrate 18; first flow channel confluent parts 28 of the plurality of first flow channels 21 comprise a plurality of first flow channel confluent part open holes 28b penetrating into each first substrate 16; and second flow channel first introduction paths 32 and second flow channel second introduction paths 34 of a plurality of second flow channels 22 are aligned along the second substrate surface 18a of the second substrate 18, and are arranged in an area where the first channel confluent flow channels 30 do not exist when viewed in a direction along a lamination direction of the first substrate 16 and the second substrate 18.SELECTED DRAWING: Figure 3 【課題】流路構造体内における複数の合流部の配置によりそれらの合流部に繋がる合流流路の配置が制約を受ける場合であっても、流路構造体の単位体積当たりにおける流路の容量を増やすことが可能な流路装置を提供する。【解決手段】流路装置１の流路構造体２では、複数の第１流路２１の第１流路合流流路３０は、各第２基板１８の第２基板表面１８ａに沿って配列された複数の第１流路合流流路３０を含み、複数の第１流路２１の第１流路合流部２８は、各第１基板１６を貫通する複数の第１流路合流部貫通孔２８ｂからなり、複数の第２流路２２の第２流路第１導入路３２及び第２流路第２導入路３４は、各第２基板１８の第２基板表面１８ａに沿って配列されるとともに、第１基板１６と第２基板１８との積層方向に沿う方向から見て第１流路合流流路３０が存在しない領域に配置されている。【選択図】図３