| 摘要 |
<p>The present invention is concerned with a system for spatially and temporally programmable delivery of an active agent. When administered orally, the system can be retained in the gastric region for a prolonged period of time. It comprises of a core, one or more layers coated over the core and a preformed hollow space. The invention also concerns with a process for preparation of the system and a method for treating/preventing diseases, by administering to a subject in need thereof, the system of the invention.</p> |
