David E Mcdaniel

US Patent:

6632218, Oct 14, 2003

Filed:

Oct 21, 1999

Appl. No.:

09/425156

Inventors:

Horace W. Furumoto - Wellesley MA
George Cho - Hopkinton MA
David H. McDaniel - Virginia Beach VA
Eric Koschmann - Hudson NH
Antonio G. Rizzo - Nashua NH

Assignee:

Cynosure, Inc. - Chelmsford MA

International Classification:

A61B 1818

US Classification:

606 9, 606 3, 128898, 607 88, 607 89

Abstract:

A long pulse alexandrite laser hair removal system is disclosed using light pulses of greater than 1 msec and fluences between 10 and 50 J/cm. The use of an alexandrite laser allows good penetration while still achieving an acceptable combination of hemoglobin and melanin absorption. The use an index-matching application on the skin sections to be treated is also described. This substance will be absorbed into the epidermal layer to provide better coupling of the laser light into the skin. Also, and most advantageously, it will reduce reflections at the epidermal-dermal junction, which can lead to the damage of the skin. Also a topical thermal or photochromic indicator is suggested since skin irradiation in the near-infrared generally does not produce any characteristic skin color change as is found when using pulsed dye lasers, for example.

US Patent:

58430725, Dec 1, 1998

Filed:

Nov 7, 1996

Appl. No.:

8/745133

Inventors:

Horace W. Furumoto - Wellesley MA
George Cho - Hopkinton MA
David H. McDaniel - Virginia Beach VA

Assignee:

Cynosure, Inc. - Chelmsford MA

International Classification:

A61B 1736

US Classification:

606 9

Abstract:

A combined sclerotherapy and light treatment method is described for the treatment of unwanted veins such as varicose and telangiectatic leg veins. Substantially increased success, in the range of 90-100%, has been achieved by implementing a dwell time of between 12 hours and 6 months between the light-based therapy and the sclerotherapy. Near infra-red wavelength light is preferably used in the light therapy due to its better depths of penetration through the skin to deeper lying, larger vessels such as varicose veins.

US Patent:

58714790, Feb 16, 1999

Filed:

Nov 7, 1996

Appl. No.:

8/744344

Inventors:

Horace W. Furumoto - Wellesley MA
George Cho - Hopkinton MA
David H. McDaniel - Virginia Beach VA
Eric Koschmann - Hudson NH
Antonio G. Rizzo - Nashua NH

Assignee:

Cynosure, Inc. - Chelmsford MA

International Classification:

A61N 506

US Classification:

606 9

Abstract:

A long pulse alexandrite laser hair removal system is disclosed using light pulses of greater than 1 msec and fluences between 10 and 50 J/cm. sup. 2. The use of an alexandrite laser allows good penetration while still achieving an acceptable combination of hemoglobin and melanin absorption. The use an index-matching application on the skin sections to be treated is also described. This substance will be absorbed into the epidermal layer to provide better coupling of the laser light into the skin. Also, and most advantageously, it will reduce reflections at the epidermal-dermal junction, which can lead to the damage of the skin. Also a topical thermal or photochromic indicator is suggested since skin irradiation in the near-infrared generally does not produce any characteristic skin color change as is found when using pulsed dye lasers, for example.