Transdermal drug delivery device
US4781924A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Nov 9, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/7084
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A diffusional drug delivery device is described which can provide for stability of the adhesive and system components, elimination of the initial burst of drug and hence irritation, and to provide for delayed onset of therapeutic effect along with delivery of a therapeutic agent at an optimum rate. The therapeutic agent in a first form which is suitable for storage, and the anhydrous activating means are inert when in an anhydrous environment. Moisture activates the system whereby the activating means provides an acidic or basic solution and the first form of the therapeutic agent is converted to a second form which is suitable for absorption through the skin or mucosa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.