Cannula vs. Catheter

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Main Difference

The main difference between Cannula and Catheter is that the Cannula is a tube that can be inserted into the body, e.g. for the delivery or removal of fluid or for the gathering of samples and Catheter is a medical device

  • Cannula (noun)

    A tube inserted in the body to drain or inject fluid.

  • Cannula (noun)

    A hose or tube that connects directly to an oxygen (O2) bottle/source from the user's nose, commonly used by aircraft pilots or others needing direct oxygen breathing apparatus.

  • Catheter (noun)

    A small inserted into a drug, opening, remove fluid.

  • Cannula (noun)

    A small tube of metal, wood, or India rubber, used for various purposes, esp. for injecting or withdrawing fluids. It is usually associated with a trocar.

  • Catheter (noun)

    The name of various instruments for passing along mucous canals, esp. applied to a tubular instrument to be introduced into the bladder through the urethra to draw off the urine.

Webster Dictionary
  • Cannula (noun)

    a small flexible tube inserted into a body cavity for draining off fluid or introducing medication

  • Catheter (noun)

    a thin flexible tube inserted into the body to permit introduction or withdrawal of fluids or to keep the passageway open

Princeton's WordNet

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