Patent ID: 7163688
Filing Date: 2007-01-16
Classification: A61K

Abstract:
1. A delivery system for controlled delivery of a beneficial agent, the system comprising: an implantable capsule having a beneficial agent delivery end and a fluid uptake end, wherein the implantable capsule comprises one or a plurality of inwardly protruding ridges circumferentially arrayed near the fluid uptake end of the implantable capsule to securingly grip an outer surface of a membrane material; a beneficial agent reservoir positioned within the implantable capsule for delivery of the beneficial agent at a predetermined delivery rate; the membrane material received entirely within the fluid uptake end of the implantable capsule and providing a fluid permeable barrier between an interior and an exterior of the implantable capsule; and a membrane material-retaining means for preventing the membrane material from being ejected out of the fluid uptake end of the implantable capsule; wherein the membrane material-retaining means is positioned at the fluid uptake end of the implantable capsule and includes at least one opening for allowing passage of fluid.