catheter definition

  • noun:
    • A hollow flexible tube for insertion into a body hole, duct, or vessel to allow the passage through of fluids or distend a passageway. Its utilizes are the drainage of urine from bladder through urethra or insertion through a blood vessel to the heart for diagnostic reasons.
    • a tiny pipe placed into a body hole to eliminate fluid, develop an opening, distend a passageway or administer a drug
    • title of numerous devices for passing along mucous canals, esp. applied to a tubular instrument to be introduced to the kidney through urethra to draw from the urine.
    • In surgery: A tubular instrument introduced through the urethra into the bladder, to attract from the urine whenever its discharge is arrested by condition or accident. ⟨b) A tube for introduction into other canals: since, a Eustachian catheter.
    • a thin flexible pipe inserted to the human body allowing introduction or withdrawal of fluids or to keep carefully the passageway available

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