Patent ID: 7470250

Claim:
An apparatus for automatic insertion of a medicine peg into the skin comprising: a barrel wherein a medicine peg is stored, and a plunger structured for movement within the barrel, the plunger being structured to drive the peg into the skin, wherein the plunger is, at least in part, flexible and wherein the plunger is structured to drive the peg by moving from a first resting non-rectilinear constellation before administration of the peg, to a second rectilinear constellation upon administration of the peg, and then to a third resting non-rectilinear position that is substantially symmetrical about the longitudinal axis of the rectilinear constellation with the first resting non-rectilinear position, and wherein movement to the third resting non-rectilinear position retracts the plunger from at least part of the barrel.