Surgery – Instruments – Light application
Patent
1995-05-15
1998-09-29
Bahr, Jennifer
Surgery
Instruments
Light application
606 2, 606 20, 128898, A61N 506
Patent
active
058140409
ABSTRACT:
Dynamically cooling the epidermis of a port wine stain patient undergoing laser therapy permits maximization of the thermal damage to the port wine stain while at the same time minimizing nonspecific injury to the normal overlying epidermis. A cryogenic spurt is applied to the skin surface for a predetermined short period of time in the order of tens of milliseconds so that the cooling remains localized in epidermis while leaving the temperature of deeper port wine stain vessels substantially unchanged. The result is that epidermal denaturation and necrosis which normally occurs in uncooled laser irradiated skin sites does not occur and that clinically significant blanching of the port wine stains at the dynamically cooled sites establishes that selective laser photothermolysis of the port wine stain blood vessels is achieved. In addition, dynamic epidermal cooling reduces patient discomfort normally associated with flashlamp-pumped pulsed dye laser therapy.
REFERENCES:
patent: 3630203 (1971-12-01), Sellinger
patent: 4376376 (1983-03-01), Gregory
patent: 4733660 (1988-03-01), Itzkan
patent: 5057104 (1991-10-01), Chess
patent: 5098428 (1992-03-01), Sandlin et al.
patent: 5344418 (1994-09-01), Ghaffari
Encyclopedia of Medical Devices & Instrumentation vol. 2; pp. 893-908, 1988.
Chilling Port Wine Stains Improves the Response to Argon Laser Therapy, B.A. Gilchrest, M.D. et al., pp. 278-283, Plastic and Reconstructive Surgery, Feb. 1982.
Evaluation of Cooling Techniques for the Protection of the Epidermis during ND-YAG Laser Irradiation of the Skin, A. J. Welch, PhD. et al., pp. 196-204, Neodymium-YAG Laser in Medicine, Stephen N. Jaffe editor 1983.
Milner Thomas E.
Nelson J. Stuart
Svaasand Lars O.
Bahr Jennifer
Dawes Daniel L.
Peffley Michael
The Regents of the University of California
LandOfFree
Apparatus and method for dynamic cooling of biological tissues f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for dynamic cooling of biological tissues f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for dynamic cooling of biological tissues f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-682332