Light generating devices for illuminating portions of vascular tissue, to render photodynamic therapy. In one embodiment, a light source array preferably including a plurality of light emitting diodes, a focusing lens, and a light diffusing element are included in a distal end of a catheter. A balloon...http://www.google.es/patents/US7252677?utm_source=gb-gplus-sharePatente US7252677 - Light generating device to intravascular use
