Drug injection device and method

Abstract

A drug injection device includes a drug injector configured to electrochemically drive an electroosmotic pump to suck a drug from a drug storage and discharge an sucked drug to an injection target, and a controller configured to output, to the drug injector, a control signal corresponding to an injection sequence for defining an operation of the electroosmotic pump, wherein the injection sequence includes a pulse block that defines one of a voltage pulse and a current pulse to be applied to the electroosmotic pump, the pulse block defines a pair of pulse signals including a forward pulse and a reverse pulse that are applied to the electroosmotic pump to alternately generate negative pressure and positive pressure, and the electroosmotic pump sucks and discharges a drug by alternately generating the negative pressure and the positive pressure in the pulse block.

Dependencies are inferred from the claim text.