Iontophoretic delivery device and method of hydrating same
US5320598A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | May 12, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/044
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dry-state iontophoretic drug delivery device (10, 70, 80) is provided. The device has drug and electrolyte reservoirs (15, 16) which are initially in a non-hydrated condition. A liquid-containing pouch (21, 22) is provided. In certain embodiments the liquid is contained in breakable capsules within the pouch. Water or other liquid can be released from the capsules in the pouch by squeezing or flexing the pouches (21,22). Alternatively, the liquid can be released from the pouches (21,22) using pouch piercing pins (36,37). The liquid released from the pouches (21,22) hydrates the drug and electrolyte reservoirs (15, 16) and activates the device. In another embodiment, the device (20, 20a) has liquid-containing gel layers (31,32) which are initially separated from their respective electrode assemblies (8, 9). Liquid-wicking pathways (27,28) are provided to carry the liquid from the gel layers (31,32) to the drug and electrolyte layers (15, 16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.