A surgical device for insertion into a living being to support the larynx comprised of an elongated tubular member having a closed, crowed upper end. The device is comprised of a resilient biocompatible polymer material and includes an elongated, narrow aperture through the crowned upper end forming...http://www.google.de/patents/US4794924?utm_source=gb-gplus-sharePatent US4794924 - Laryngeal stent
