Transdermal systems for the delivery of ionic agents directly to open wounds and surgically repaired incisions
US7904146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2007 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Dec 18, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0448
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A transdermal system for the delivery of an anesthetic or other active therapeutic agent directly to a selected site of injured skin tissue by iontophoresis is disclosed, which utilizes a transdermal skin-worn patch including a donor electrode chamber containing a donor electrode and an amount of an active agent in a form suitable for transdermal delivery in electrical communication with the donor electrode and a return electrode. The patch also contains a source of electric current connected in a circuit with the donor and return electrode, a current regulating device is optionally provided in the circuit for controlling the electrical output of the patch and at least the donor electrode chamber includes a provision for absorbing a quantity of fluid associated with weepage from adjacent injured skin tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.