Patent ID: 7824374

Claim:
A contrast media injector, comprising: a plunger drive designed to couple to a plunger of a syringe mounted to the injector; a plunger drive motor designed to advance and retract the plunger drive to thereby move the plunger of the syringe toward and away from a nozzle of the syringe; a display designed to produce display screens; a keypad coupled to the circuitry and comprising a plurality of keys; circuitry designed to control the plunger drive motor, generate display screens for production on the display, and receive operator input via the keypad, wherein the circuitry assigns different functions to a first key of the keypad during different operations of the circuitry such that a first region of the display includes: identification of a first function available from the first key of the keypad during a first operation of the circuitry; and identification of a second different function available from the first key of the keypad during a second different operation of the circuitry.