Disclosed is a sealed radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between...http://www.google.fr/patents/US20030163017?utm_source=gb-gplus-shareBrevet US20030163017 - Multi layer radiation delivery balloon
