ST-2 Soehendra Tannenbaum® Biliary Stent. Explore our new generation of Blue Rhino® G2-Multi sets and trays with and without with Medtronic's Shiley™ flexible adult tracheostomy tubes. Previous versions of the Ciaglia Blue Rhino sets and trays with Shiley PERC6 and PERC8 tracheostomy tubes are no longer available..