A surgical item consisting of a hollow cylinder which may have features for anchoring, positioning, and is designed for irrigating, intubating, or inoculating. It is inserted into a natural opening of the human body for diagnostic exploration, observation, therapeutic administration of medication, or to facilitate the escape of fluids from cavities. For items having anchoring or positioning features designed for insertion through incisions, see CATHETER (2), (as modified). For items having anchoring or positioning features designed for insertion through incisions or wounds, see DRAIN, SURGICAL.
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