Patent ID: 8201466

Claim:
A device for use in a multi-channel pipetting system, the device comprising: a body; a plurality of modules mounted to the body, wherein each of the plurality of modules includes an orifice connecting to an intake chamber; a plurality of pistons mounted to a piston holder for simultaneous movement of the plurality of pistons in a first direction, wherein a piston of the plurality of pistons extends into the intake chamber of a module of the plurality of modules for movement in the first direction; and a guidance assembly comprising a first rotating element; a second rotating element; a shaft connecting the first rotating element to the second rotating element, the shaft extending in a second direction, wherein the second direction is orthogonal to the first direction; a first track extending parallel to the first direction; and a second track extending parallel to the first direction, wherein the first rotating element is mounted to roll along the first track and the second rotating element is mounted to roll along the second track, wherein the first rotating element and the second rotating element are configured to roll simultaneously with movement of the plurality of pistons in the first direction.