Abstract: The invention relates generally to implantable drug delivery devices. Devices having a single drug chamber configuration, a divided drug chamber configuration and a compact dual-drug configuration are described. The devices have features to prevent clogging of the dispensing catheter and the creation of a local vacuum caused by the dispensing of the drug fluid. Also provided are features of a failsafe refilling process, automatic refill notification, and performance verification process. The divided drug chamber configuration enables frequent or continuous minute doses. A dual-drug chamber configuration uses self-locking refill containers to prevent mismatching between refill containers and drug chambers.

Abstract: The present invention is directed to methods of preparing nanoparticles of aqueous-insoluble compounds, particularly aqueous-insoluble bioactive (drug) compounds, and to compositions and medicaments obtained by these methods. These methods, compositions, and other inventive aspects of the present invention are based particularly on the use of bile acid compound(s) to prepare nanoparticles of aqueous-insoluble compounds.