A probe, which includes a plurality of first optical fibers and a plurality of second optical fibers that are tied as a composite bundle at a distal end side with forming a center channel through which a treatment instrument can be drawn. The first optical fibers are tied as a first branch bundle at...http://www.google.es/patents/US6936004?utm_source=gb-gplus-sharePatente US6936004 - Probe and fluorescent diagnostic system
