Abstract: A fluid device includes a substrate and a gas-liquid separating filter, the substrate has a flow path through which a solution flows, a reservoir, in which the solution is accommodated, connected to the flow path, an injection hole configured to connect the reservoir to the outside, and an air introduction hole branched off from the injection hole and connected to the outside, and the gas-liquid separating filter is disposed in a path of the air introduction hole, allows passage of a gas flowing through the air introduction hole, and prevents passage of a liquid flowing through the air introduction hole.

Abstract: The present invention aims at providing a fluidic device that can hold a large amount of solutions in a reservoir without depending on an attitude. The reservoir includes a meandering flow path including: a plurality of first flow paths that extend linearly along a first direction and that are arranged to be spaced in a second direction crossing the first direction; and a second flow path that extends linearly along the second direction such that a connection between first end sides of the adjacent first flow paths and a connection between second end sides of the adjacent first flow paths are alternately switched along the second direction for each first flow path, wherein the meandering flow path meanders along the second direction.

Abstract: An object of the present invention is to provide a flow path device capable of suppressing an occurrence of air bubbles when a solution is introduced into a flow path. A fluidic device has a pair of substrates which are stacked in a thickness direction, one substrate including a flow path formed by being covered with the other substrate. The flow path includes a merging/branching portion which is surrounded by a contour which is configured to match each line segment connecting together apex positions of an equilateral triangle as viewed in the thickness direction or a contour parallel to each line segment and in which solution merges or branches. A valve which is configured to regulate flow of a fluid in the flow path is provided in at least two of the apex positions.

Abstract: An object of the present invention is to provide a fluidic device in which a solution can be introduced into a flow path and be quantified while preventing air bubbles from being generated. A pair of substrates are provided which are stacked in a thickness direction and in which one substrate includes a flow path constituted by being covered by another substrate. The flow path includes a quantification part that is able to quantify a solution to a predetermined amount. The quantification part includes: a pair of merging/branching portions each of which is surrounded by a contour that matches each of line segments connecting apex positions of an equilateral triangle in a view of the thickness direction or a contour parallel to each of the line segments and at which merging or branching of the solution is performed; and a connection portion that connects the pair of merging/branching portions via one of the apex positions of the equilateral triangle of the merging/branching portion.

Abstract: A fluid device includes a substrate which has a pair of substrate plates stacked in a thickness direction thereof, wherein the substrate is provided with a flow path which is formed by covering a groove portion provided in one substrate plate of the pair of substrate plates with the other substrate plate, wherein the flow path includes a merging portion, and a supply flow path, a discharge flow path, and a branch flow path which extend radially from the merging portion, wherein a discharge valve is provided between the merging portion and the discharge flow path, wherein a branch valve is provided between the merging portion and the branch flow path, wherein the merging portion is filled with a solution by causing the solution to flow from the supply flow path toward the discharge flow path in a state in which the branch valve is closed, and wherein in the merging portion, a dimension of a region adjacent to the discharge valve in the thickness direction is smaller than a dimension of a region adjacent to the

Abstract: A fluid device includes a substrate and a gas-liquid separating filter, the substrate has a flow path through which a solution flows, a reservoir, in which the solution is accommodated, connected to the flow path, an injection hole configured to connect the reservoir to the outside, and an air introduction hole branched off from the injection hole and connected to the outside, and the gas-liquid separating filter is disposed in a path of the air introduction hole, allows passage of a gas flowing through the air introduction hole, and prevents passage of a liquid flowing through the air introduction hole.

Abstract: The present invention aims at providing a fluidic device that can hold a large amount of solutions in a reservoir without depending on an attitude. The reservoir includes a meandering flow path including: a plurality of first flow paths that extend linearly along a first direction and that are arranged to be spaced in a second direction crossing the first direction; and a second flow path that extends linearly along the second direction such that a connection between first end sides of the adjacent first flow paths and a connection between second end sides of the adjacent first flow paths are alternately switched along the second direction for each first flow path, wherein the meandering flow path meanders along the second direction.

Abstract: A fluidic device that can feed a fluid along a flow path without causing a leakage of gas is provided. The fluidic device includes: a first substrate and a second substrate which are bonded to each other at a bonding surface and at least one of which includes a flow path that is open on the bonding surface; and three or more valve portions that are disposed at a position facing the flow path and that are configured to adjust a flow of a fluid in the flow path by deformation. The first substrate includes a through-hole penetrating the first substrate at positions facing the valve portions. The valve portions are disposed on the same circumference centered on an axis extending in a normal direction of the bonding surface.

Abstract: A fluid device includes a base material including a flow path through which a solution flows and a first facing surface, a treatment substrate including a second facing surface which faces the first facing surface and in which a treatment unit which comes in contact with the solution and treats the solution is provided, and a sealing portion sandwiched between the first facing surface and the second facing surface, in which a treatment space surrounding the treatment unit with the sealing portion when viewed from a plate thickness direction and connected to the flow path is provided between the treatment substrate and the base material.

Abstract: A method of manufacturing a fluidic device includes molding either one of the base member and the valve part with a first mold; and molding the other one of the base member and the valve part with a second mold with respect to the molded base member or the molded valve part.

Abstract: A fluidic device includes a flow path through which a solution is introduced, and a reservoir in which the solution is accommodated and configured to supply the solution to the flow path. The reservoir has a length in a direction in which the solution flows toward the flow path, which is larger than a width perpendicular to the length.

Abstract: A fluid device includes a flow path through which a liquid flows, and a tank connected to the flow path and in which the liquid is accommodated. The tank includes an exhaust port through which a gas is discharged, a gas-liquid separation filter that suppresses outflow of the liquid from the exhaust port, and an absorber disposed in the tank and that absorbs the liquid.