{HEAD ~ The invention} is directed to {TAIL ~ a device} for delivering an active agent formulation for a predetermined administration period 
is directed to
{ HEAD ~ The invention } is directed to { TAIL ~ a device } for delivering an active agent formulation for a predetermined administration period
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH