| 摘要 |
An osmotic system is disclosed comprising a wall 12, 23 formed in at least a part of a semipermeable material that surrounds a compartment 14. The compartment contains a first osmotic composition 15, 16, 17 comprising a beneficial agent 15, and a second and different osmotic composition 18, 19. A passageway 13 in the wall connects the first composition with the exterior of the system. <IMAGE> |
