Patent ID: 6835194
Filing Date: 2004-12-28
Classification: A61F,A61K,A61M,A61P,Y02A

Abstract:
A controlled drug delivery device, adapted for whole implantation in a subject, the device comprising:a housing defining a reservoir, the reservoir containing a formulation comprising a drug selected from the group consisting of fentanyl or a fentanyl congener, wherein the drug is present in an amount sufficient for treatment of pain in a subject for a period of at least about 3 days; a pump operatively connected to the housing; and a thermal expansion element comprising an inlet, a thermal expansion channel adapted to contain a volume of formulation associated with thermal expansion, and an outlet; wherein in use, the inlet, thermal expansion channel, and outlet define a flow pathway from the reservoir and out of the device such that actuation of the pump effects movement of formulation through the flow pathway.