The trocar is a sharp-pointed instrument incased in a cannula or sheath, which leaves the sharp point of the trocar free.
If puncture with the trocar or aspiration be practised, shall all the fluid be withdrawn at once?
There is a stop-cock between the trocar and syringe, and another at right angles to the syringe.
The operation is performed with a combined instrument called the trocar and cannula.
The name Karkin was said by Arroyo de la Cuesta to signify "trocar," or "to trade."
I then introduced a trocar and canula, and drew off fifty ounces of pus, slightly tinged with blood.
As the trocar is withdrawn, the canula should be pushed still further in.
The best instruments are the trocar and canula, but in the absence of these a pocket knife and goose quill may be made to answer.
It consists of a powerful syringe, which fits accurately to the trocar with which the puncture is made.
An overfull bladder has been mistaken for an ovarian cyst and been punctured with a trocar before the mistake was discovered.
trocar tro·car (trō'kär')
A sharp-pointed surgical instrument, used with a cannula to puncture a body cavity for fluid aspiration.