Patent ID: 7356995

Claim:
A device for controlling the flow of fluid comprising: a Peltier heat pump having a cold face, a cradle having a channel, said channel being capable of receiving a fluidic conduit, said cradle being in thermal communication with said cold face of said Peltier heat pump, said fluidic conduit capable of transporting one or more fluids, freezing the fluids contained therein at a low temperature to restrict flow and thawing fluids contained therein to allow flow; a heat element, proximal to said cradle, for applying heat to said fluidic conduit; wherein said Peltier heat pump is maintained at a substantially constant temperature, such that when said heat element applies no heat to said fluidic conduit, said fluidic conduit is held at a low temperature closed state, and when said heat element applies heat to said fluidic conduit, said fluidic conduit is held at a high temperature open state.