Patent ID: 7766883

Claim:
A system for mixing and delivering fluids, comprising: at least two fluid sources; a pump having an inlet and an outlet; a joining fluid path connecting the at least two fluid sources to the inlet of the pump, the joining fluid path comprising a first fluid line in fluid connection with the first fluid source, a second fluid line in fluid connection with the second fluid source, and a joining connector adapted to join the first fluid line and the second fluid line, the joining connector having an outlet in fluid connection with the pump inlet; and a valve device operably associated with the joining fluid path upstream of the pump, the valve device comprising a base and a valve actuator, the base having two spaced apart, upstanding sidewalls and an upstanding dividing portion positioned in an area defined between the pair of sidewalls, the pair of sidewalls and the dividing portion cooperating to define a pair of channels adapted to accommodate, respectively, the first and second fluid lines, the valve actuator comprising a pinch block having a first leg at least partially disposed in a first channel of the pair of channels and a second leg at least partially disposed in a second channel of the pair of channels, the first leg of the pinch block positioned to engage the first fluid line and the second leg of the pinch block positioned to engage the second fluid line, the valve actuator adapted to partially compress one or both of the respective first and second fluid lines to thereby restrict fluid flow and effect proportional mixing of the two fluids downstream of the valve device; wherein an incremental positional change in the position of the valve actuator provides a substantially linear change in the fluid mixture ratio of the at least two fluids delivered to a patient.