Transdermal system for simultaneous delivery of a number of active principles
US5919477A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Jun 11, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P5/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A novel system for percutaneously delivering at least two active principles, consisting of at least two juxtaposed devices. The system includes (i) a first device containing a mixture of all the active principles in which at least one first active principle (A) is present in an amount enabling the effective therapeutic dose to be delivered, and at least one second active principle (B) is present in an amount smaller than the amount needed to deliver the effective therapeutic dose; and (ii) one or more additional devices each containing a single active principle (B) selected from those in the first device and provided in an amount smaller than the amount needed to deliver the effective therapeutic dose, said additional device(s) being designed to top up the amount of each of the active principles (B) in the system until the effective therapeutic dose is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.