Surgery – Instruments – Light application
Reexamination Certificate
2011-01-04
2011-01-04
Farah, Ahmed M (Department: 3769)
Surgery
Instruments
Light application
C606S010000, C606S012000, C607S088000, C607S089000
Reexamination Certificate
active
07862555
ABSTRACT:
In a fractional treatment system, 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. 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. In one aspect, the fractional treatment is configured with a laser wavelength that is selected such that absorption of the laser wavelength within the tissue decreases as the tissue is heated by the laser (e.g., 1480-1640 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 7 cm−1to about 26 cm−1.
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Chan Kin F.
DeBenedictis Leonard C.
Dewey David
Frangineas George
Farah Ahmed M
Reliant Technologies
Wood Herron & Evans LLP
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