A ligating band dispenser includes a cylindrical inner sleeve and at least a partially encompassing balloon, where the inner sleeve supports one or more expanded ligating bands external to the balloon. This ligating band dispenser allows the introduction of a pressurized fluid between the inner sleeve...http://www.google.es/patents/US6280452?utm_source=gb-gplus-sharePatente US6280452 - Balloon actuated ligating band dispenser
