Title:
METHOD AND APPARATUS FOR PRODUCING HOMOGENOUS CAVITATION TO ENHANCE TRANSDERMAL TRANSPORT
Document Type and Number:
WIPO Patent Application WO2000035351
Kind Code:
A9
Abstract:
The present invention is directed to apparatus, and methods for producing homogenous cavitation. An ultrasound souce comprising an ultrasound transmitting element (20) having an axis (5), and a cross section along the axis is disclosed. The ultrasound transmitting element also has a first axial end (1), and a second axial end (2) 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.
Inventors:
MITRAGOTRI SAMIR S (US)
KOST JOSEPH (US)
KELLOGG SCOTT C (US)
WARNER NICK (US)
KOST JOSEPH (US)
KELLOGG SCOTT C (US)
WARNER NICK (US)
Application Number:
PCT/US1999/030067
Publication Date:
May 10, 2001
Filing Date:
December 17, 1999
Export Citation:
Assignee:
SONTRA MEDICAL INC (US)
MITRAGOTRI SAMIR S (US)
KOST JOSEPH (US)
KELLOGG SCOTT C (US)
WARNER NICK (US)
MITRAGOTRI SAMIR S (US)
KOST JOSEPH (US)
KELLOGG SCOTT C (US)
WARNER NICK (US)
International Classes:
A61B18/00; A61M1/36; A61M35/00; A61M37/00; A61B17/22; (IPC1-7): A61B17/00
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