Surgery – Instruments – Light application
Reexamination Certificate
2011-05-10
2011-05-10
Farah, Ahmed M (Department: 3769)
Surgery
Instruments
Light application
C606S003000, C606S010000, C606S017000, C607S088000, C607S089000
Reexamination Certificate
active
07938821
ABSTRACT:
A fractional treatment system can be configured with a laser wavelength that is selected such that absorption of the laser wavelength within the tissue increases as the tissue is heated by the laser (e.g., 1390-1425 nm). Desirably, the laser wavelength is primarily absorbed within a treated region of skin by water and has a thermally adjusted absorption coefficient within the range of about 8 cm−1to about 30 cm−1. An adjustable mechanism can be used to adjust the beam shape, beam numerical aperture, beam focus depth, and/or beam size to affect the treatment depth and or the character of the resulting lesions. The system may be designed to be switchable between a treatment mode that is semi-ablative and a treatment mode that is not semi-ablative. Adjustment of these parameters can improve the efficiency and efficacy of treatment. Illustrative examples of adjustable mechanisms include a set of spacers of different lengths, a rotatable turret with lens elements of different focal distances, an optical zoom lens, and a mechanical adjustment apparatus for adjusting the spacing between two optical lens elements.
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Chan Kin F.
DeBenedictis Leonard C.
Dewey David
Frangineas George
Farah Ahmed M
Reliant Technologies, Inc.
Wood Herron & Evans LLP
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