Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...
Reexamination Certificate
2007-05-22
2007-05-22
Kim, Vickie (Department: 1618)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Radical -xh acid, or anhydride, acid halide or salt thereof...
C514S563000, C514S538000, C514S183000, C504S130000, C504S147000, C424S450000
Reexamination Certificate
active
10709121
ABSTRACT:
Methods for preventing damage to epithelial tissue during PDT induced using a photosensitizing agent or pre-photosensitizing agent are provided. The methods of the present invention utilize spatial confinement to control photoactivation of the photoactive species to protect the epithelial tissue. In one embodiment, epithelial tissue surrounding a targeted treatment site can be protecting by decreasing the oxygen-content in the tissue, thereby preventing the conversion of the photosensitizer into the phototoxic species in the epithelial tissue.
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Anderson Richard Rox
Battle Eliot F.
Joe Edwin K.
Ortel Bernhard
Kim Vickie
Nutter & McClennen & Fish LLP
The General Hospital Corporation
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