They ended up producing a flexible catheter tube that goes a bit of the way up the nostrils, then a guide wire is inserted into the targeted sinus. (In live patients this is done via an endoscope and fluoroscope.) A balloon catheter is advanced over the guide wire and positioned against the blocked ostium.
Meanwhile at Imperial College in London, Varnavas Serhides designed a plane that has no tail by taking advantage of advanced "fly-by-wire" controls and eliminating the need for a horizontal stabilizer and vertical tail, which also reduces drag.