| 摘要 |
The active ingredient depot, in one embodiment, is a closed double-walled tube having at least one pressure-sensitive outlet at one end in the form of one of a membrane, a diaphragm and a valve; and an active substance embedded therein. In another embodiment, the active ingredient depot, is an encapsulation, such as an ice cube, having a outer surrounding wall and an inner dissolvable wall defining a cavity in which an active substance is disposed. |
