Patent ID: 6520928
Filing Date: 2003-02-18
Classification: A61M

Abstract:
A medical liquid injection system, comprising:a hand-held injection device having a motor, a cartridge case for holding a medical liquid cartridge, a needle, and means, connected to said motor, for expelling liquid from said cartridge through said needle; a foot-operable pedal connected to said injection device for controlling the operation of said motor; a control unit connected to said foot-operable pedal for selecting or programming injection procedures; said injection system having a preparation mode for calibration of said cartridge, an introduction mode for advancing said needle to a desired location, an aspiration mode for detecting and preventing intravenous injection of the medical liquid, and an injection mode for delivering the medical liquid to the desired location; said preparation, introduction, aspiration, and injection modes being independently selectable by depressing said foot-operated pedal in discrete directions. operable during a continuous depression of said foot-operable pedal in a predetermined direction and ceasing upon release of said foot-operable pedal.