Patent ID: 8470353

Claim:
An osmotic delivery system flow modulator, comprising: an outer shell constructed and arranged for positioning in an opening of a reservoir of an osmotic delivery system, wherein the outer shell comprises an inner surface and the outer shell is made of a non-metallic, non-reactive polymer material; an inner core inserted in the outer shell, wherein the inner core comprises an outer surface and the inner core is made of a non-metallic, non-reactive polymer material; and an internal fluid channel comprising a spiral shape defined between the outer shell and the inner core, wherein the fluid channel is (i) formed on the outer surface of the inner core that mates with the inner surface of the outer shell, (ii) formed on the inner surface of the outer shell that mates with the outer surface of the inner core, or (iii) formed on the outer surface of the inner core that mates with the inner surface of the outer shell and formed on the inner surface of the outer shell that mates with the outer surface of the inner core.