Inventors:
Peter X. Ma - Ann Arbor MI, US
Xiaohua Liu - Ann Arbor MI, US
Laurie McCauley - Ann Arbor MI, US
International Classification:
A61F 2/02, A61K 39/00, A61K 38/02, A61K 31/7052, B29C 33/40
US Classification:
424426, 4241841, 514 2, 514 44, 264221
Abstract:
A delivery device includes a hollow container, and a plurality of biodegradable and/or erodible polymeric layers established in the container. A layer including a predetermined substance is established between each of the plurality of polymeric layers, whereby degradation of the polymeric layer and release of the predetermined substance occur intermittently. Methods for forming the device are also disclosed herein.