| 摘要 |
1517879 Osmotically driven fluid dispensers ALZA CORP 20 Sept 1976 38897/76 Heading A5B [Also in Divisions B1 and F1] An osmotically driven fluid dispenser 11 comprises a flexible inner bag 14 closed at one end and open at the other end and adapted to contain the fluid e.g. a drug composition 17, a plug 15 fitted into the open end of the bag 14 and having a port through which the fluid may be charged into the bag 14, an intermediate layer 13 of an osmotically effective solute composition covering the exterior of the bag 14, and an outer shape-retaining semipermeable membrane 12 covering the intermediate layer 13, the layer 13 only covering sufficient of the bag 14 to leave a band 22 adjacent the open end of the bag that is not covered by the layer 13 but seals directly with the membrane 12, and a conduit 24 fitting snugly through the port and extending into the interior of the bag 14 after the fluid 17 is charged into the bag to provide an outlet for dispensing the fluid 17. |
