trocar
Jump to navigation
Jump to search
Introduction
An instrument for withdrawing fluid from a cavity, or for use in paracentesis. It consists of a metal tube (cannula) into which fits an obturator with a sharp 3 corner tip which is withdrawn after the instrument has penetrated the cavity. The trocar is often applied to the obturator itself, with the entire instrument being designated an obturator + cannula.
More general terms
References
- ↑ Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999