A brachytherapy device for the provision of brachytherapy is disclosed. The brachytherapy device has at least one source lumen located outside a movable surface of the device. The source lumen may be secured to the movable outer surface in a manner whereby relative movement of the source lumen relative...http://www.google.fr/patents/US7497820?utm_source=gb-gplus-shareBrevet US7497820 - Expandable brachytherapy device