trocar /tro·car/ (tro´kahr) a sharp-pointed instrument equipped with a cannula, used to puncture the wall of a body cavity and withdraw fluid.
Trocar
trocar
trocar
tro·car (tr  kär )n. A sharp-pointed surgical instrument, used with a cannula to puncture a body cavity for fluid aspiration. |
Trocar
A sharp pointed tube through which a needle can be inserted.
Mentioned in: Joint Biopsy
trocar
[trō′kär]
Etymology: Fr, trois, three, carres, sides
a sharp, pointed rod that fits inside a tube. It is used to pierce the skin and the wall of a cavity or canal in the body to aspirate fluids, to instill a medication or solution, or to guide the placement of a soft catheter. The trocar is usually removed, and the catheter, tube, or instrument is left in place. See also cannula.
trocar
a sharp-pointed, needle-like instrument equipped with a cannula; used to puncture the wall of a body cavity and withdraw fluid or gas. An especially large bore trocar and cannula, 1.0 to 1.5 cm diameter, is used in the treatment of bloat in cattle.
bleeding trocar
a large bore, about 10 gauge, needle with a ferruled hub for the attachment of rubber tubing.
Duchenne's trocar
a trocar for obtaining specimens of deep-seated tissues.
trocar
Laparoscopic surgery A blunt needle-shaped instrument used to withdraw fluid from a body cavity, or perform a 'centesis'. See Saber BT™blunt-tip surgical.
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