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Cannula vs. Catheter

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Cannulanoun

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

Catheternoun

(medicine) A small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.

Cannulanoun

(aviation) 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.

Catheternoun

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.

Cannulanoun

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.

Catheternoun

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

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Cannulanoun

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

Catheter

In medicine, a catheter is a thin tube made from medical grade materials serving a broad range of functions. Catheters are medical devices that can be inserted in the body to treat diseases or perform a surgical procedure.

Cannula

A cannula (; Latin meaning 'little reed'; plural cannulae or cannulas) is a tube that can be inserted into the body, often for the delivery or removal of fluid or for the gathering of samples. In simple terms, a cannula can surround the inner or outer surfaces of a trocar needle thus extending the effective needle length by at least half the length of the original needle.

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