Diffusion matrix for transdermal drug administration and transdermal drug delivery devices including same
US4911916A · kind A · utility
59Cited by
22References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Apr 8, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/7092
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A solid state, resilient laminated composite for administering a drug transdermally consisting of a top layer of a resilient elastomer; a middle diffusion matrix layer composed of a polyurethane macroporous foam framework in whose pores are embedded a viscoelastic blend of a medical grade polysiloxane adhesive, drug, and optionally a percutaneous absorption enhancer, and a basal surface layer of the medical grade polysiloxane adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.