Method and apparatus for producing homogenous cavitation to enhance transdermal transport
US6620123B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jul 26, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to apparatus and methods for producing homogenous cavitation. An ultrasound souce comprising an ultrasound transmitting element having an axis and a cross-section along the axis is disclosed The ultrasound transmitting element also has a first axial end and a second axial end operable to produce ultrasonic waves. The cross-section has an area having a maximum value at the first axial end and a minimum value at the second axial end. A method for producing homogenous cavitation at an area of skin comprises creating a volume of fluid having a uniformly dispersed concentration of cavitation nuclei adjacent the area of skin. Ultrasound is then applied to the volume of fluid and causes cavitation at the cavitation nuclei.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.