Patent ID: 7810784

Claim:
A roller clamp comprising: a tube installation part having a bottom part that extends from one side to the other, and a pair of side wall parts on which guide grooves are formed on opposing surfaces that extend upward from either edge part in the length direction of the bottom part in such a way that their heights vary as they extend from one side to the other side; a flow rate regulating roller having a center axis part, which is placed across said pair of side wall parts while being movably supported by said guide grooves at both edge parts; a roller part, which is provided at the center of said center axis part in the axial direction so that it presses a tube for fluid flow provided at said tube installation part against said bottom part so as to regulate the flow rate of the fluid that flows within said tube as it moves along said guide grooves around said center axis part; and a tube winding shaft part for winding said tube providing at a part a prescribed distance from the region where said flow rate regulating roller moves, at said tube installation part, along the length direction of said bottom part, wherein said tube winding shaft part can rotate.