Natural Orifice Endoscopic SurgeryLaparoscopyEndoscopesEndoscopyCuldoscopyAbdominal CavityUmbilicusLaparoscopesAppendectomyCholecystectomy, LaparoscopicSuture TechniquesVideo-Assisted SurgeryNeuroendoscopyAnastomotic LeakPneumoperitoneum, ArtificialEquipment DesignSurgical InstrumentsSurgical Procedures, Minimally InvasiveBasal Ganglia HemorrhageVaginaAngiofibromaGynecologic Surgical ProceduresRoboticsFeasibility StudiesOtorhinolaryngologic Surgical Procedures