Device for percutaneous delivery of therapeutic agents, and a method for its use

A device for percutaneous delivery of therapeutic agents, the device comprising:

• a head mounted on a body, said head comprising at least one projection;
• a first wheel having an axis of rotation, a first axial surface of the first wheel comprising a central cavity that engages with said projection such that the first axial surface of the first wheel is rotably mounted on the head, a second axial surface of the first wheel, an outer surface, and a plurality of needles disposed upon the outer surface, each needle having a tip projecting away from the axis of rotation of the wheel;
• a second wheel having an axis of rotation, a first axial surface of the second wheel coupled to the second axial surface of the first wheel, a second axial surface of the second wheel, an outer surface, and a plurality of needles disposed upon the outer surface, each needle having a tip projecting away from the axis of rotation;
• a reservoir mounted on the body, wherein the reservoir is contained in a tube having a bottom end near to the wheel and a top end, wherein an opening is in the bottom end of the tube;
• and
• a plunger within the tube, and an actuator button set through the tip end of the tube and mechanically linked to the plunger, such that depression of the actuator button causes the plunger to force the fluid out through the opening.