| http://www.w3.org/ns/prov#value | - A method for treatment of lesions or obstructions in tissue of a body vessel or cavity comprising the steps of:providing a plurality of optical fibers in which the distal end of the catheter is enclosed by an optical shield transparent to optical light radiation and wherein the proximal end of the catheter and optical fibers may be coupled to a laser or other light source; inserting said catheter
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