Appeal No. 2003-1374
Application No. 09/591,947
a balloon associated with said distal region of said catheter,
said balloon having a membrane, said membrane being at least
translucent to the light produced by said semiconductor light
sources, whereby light radiated away from said semiconductor body
in said distal region can pass through said membrane of said
balloon;
a balloon inflation lumen extending from said proximal region
of said catheter to said balloon;
whereby inflation of said balloon tends to flatten folds in
the wall of said vas, and energization of said semiconductor light
sources allows light to reach said wall of said vas, and, in the
presence of a photosensitive substance in said wall of said vas,
said light reaching said wall of said vas results in fluorescence
of said photosensitive substance;
said catheter further comprising:
a fluorescence light pickup and transmission arrangement at
least partially located in said distal region, for receiving said
fluorescence light, and for carrying a signal responsive to said
fluorescence light to said proximal region, and for making said
signal responsive to said fluorescence light available at said
proximal region of said catheter.
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