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According to CDSCO guidelines, Flexible fibreoptic nasopharyngo laryngoscope falls under Risk Class B under ENT Devices category of Medical Devices. Intended use - Flexible endoscope intended for the visual examination and treatment of the nasal passages, including the sinus openings, the pharyngeal end of the auditory tube, the larynx, and the vocal cords.. This article will give you complete information about manufacturing Flexible fibreoptic nasopharyngo laryngoscope