Cannula vs. Trocar

Cannulanoun

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

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.

Cannulanoun

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

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.

Trocarnoun

A pointed hollow cylindrical device used to make small incisions and surgically insert cannulas, etc., into body cavities, or to aspirate fluids.

Trocarnoun

A stylet, usually with a triangular point, used for exploring tissues or for inserting drainage tubes, as in dropsy.

Trocarnoun

a surgical instrument with a three-sided cutting point enclosed in a tube, used for withdrawing fluid from a body cavity.

Trocar

A trocar (or trochar) is a medical or veterinary device that is made up of an awl (which may be a metal or plastic sharpened or non-bladed tip), a cannula (essentially a hollow tube), and a seal. Trocars are placed through the abdomen during laparoscopic surgery.