Fig. 2
From: Clinical outcomes of transoral videolaryngoscopic surgery for hypopharyngeal and supraglottic cancer
Configurations of TOVS. a Curved rigid pharyngolaryngeal blade. b Distending laryngoscope. c Distending diverticuloscope combined with a rigid endoscope. d FK-WO retractor system and its set of various blades. e Schematic appearance of the TOVS setting. f General scene of the TOVS setting in an operation room. A surgeon at the patient’s head performs surgery by direct bimanual handling of the straight-form surgical instruments and devices while viewing the monitor