Patent ID: 7896018

Claim:
A method for controlling the flow of a fluid from an implantable drug pump device, the method comprising: storing a therapeutic solution in a reservoir of the implantable drug pump device; operating a valve component of the implantable drug pump device to control fluid flow from the reservoir and out from the implantable drug pump, wherein valve component comprises (i) two or more opposing armatures within an interior chamber of the valve component of the implantable drug pump device; (ii) one or more springs placed between the armatures, wherein the springs force the armatures against an armature's associated valve seat, wherein during operation the drug pump device induces a magnetic field with at least one coil, the magnetic field motivating the armatures to move along a common axis in opposite directions against the force of the one or more springs providing a path for fluid flow; and reversing, periodically, the direction of current flow through the at least one coil to form a degaussing field.