trochar
/ˈtroʊkɑr/
noun
- A sharp, pointed surgical instrument used with a tube (cannula) to pierce a body cavity and drain fluid or insert other instruments.
- The medical student practiced using a trochar on a training model.
- The surgeon used a trochar to drain the fluid from the patient's abdomen.
- Before the laparoscopy, the doctor inserted a trochar through a small incision.