In one embodiment, the implantable drug pump includes {HEAD ~ a housing} having at least one inlet port and {TAIL ~ an outlet port} formed therein 
having
In one embodiment , the implantable drug pump includes { HEAD ~ a housing } having at least one inlet port and { TAIL ~ an outlet port } formed therein
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH