Technologies for needles with microchannels

An apparatus comprising:

• a base having a first impermeable surface and an opposing second surface;
• a plurality of shafts consisting of silica or plastic and projecting from the second surface of the base to a tip, each of said shafts defining a primary channel interior to each shaft and extending from a proximal end toward a distal end, wherein the proximal end of the primary channel is in fluid communication with said first surface and the distal end of the primary channel terminates within the interior of the shaft defining a primary channel floor, wherein each of said shafts further define one or more microchannels, wherein each of the one or more microchannels extend from the primary channel through the shaft wall to place the primary channel in fluid communication with the exterior surface of the shaft, wherein the major axis of each of the microchannels form an angle relative to the major axis of the primary channel, said primary channel and microchannels formed for receiving a liquid solution comprising a drug;
• and
• a first electrode positioned for contact with said liquid solution in the primary channel and a second electrode is positioned adjacent to said shafts, wherein when said first electrode, connected to one side of a voltage source, is placed in contact with the liquid solution introduced into the primary channel and microchannels of each of the shafts, and said second electrode, connected to the other side of said voltage source, are electrically connected, an electric field is created, localized to said microchannels formed in each of the plurality of shafts.