Iontophoretic treatment system
US6600950B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 16, 1995 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Nov 16, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0448
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for applying iontophoretic treatment to a biological subject wherein electrical treatment current between a pair of electrodes is periodically reversed at very low frequencies, substantially in the range of approximately 0.0027 Hz to approximately 10 Hz, to mitigate tissue damage, enable long term dosimetry with single and multiple drugs of any polarity and at higher concentrations, and eliminate the need for buffering agents and the like, all in a relatively simple, economical and compact physical packaging configuration. The system delivers treatment substances with large and/or small molecular size and weight and can be adjusted to control pH at the delivery site. A method of lowering resistance and enhancing permeability at the delivery site, as well as increasing drug concentrations and delivery rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.