Patent ID: 7670315

Claim:
An injector for injecting a fluid into a patient, comprising: (a) a first pressurizing mechanism adapted to operatively connect with a first syringe to pressurize a fluid therein; (b) a second pressurizing mechanism adapted to operatively connect with a second syringe to pressurize a fluid therein; (c) a single drive; and (d) a transmission to control how power from the single drive is distributed to the first pressurizing mechanism of the first syringe and to the second pressurizing mechanism of the second syringe to control injection of fluid from the first syringe and from the second syringe, the transmission having a first one way clutch gear and a second one way clutch gear spaced from each other on and in operative connection with a drive shaft that is in operative connection with the single drive such that (I) the first one way clutch gear is driven by the drive shaft upon rotation of the drive shaft in a first direction and slipping upon rotation of the drive shaft in a second direction opposite the first direction and (II) the second one way clutch gear is driven by the drive shaft upon rotation of the drive shaft in the second direction and slipping upon rotation of the drive shaft in the first direction; wherein the first one way clutch gear and the second one way clutch gear are linearly movable on the drive shaft.