trocar
Pronunciation: TROH-car
Pointed surgical instrument used to create access ports during laparoscopic procedures.
Full Definition
A trocar is a sharp, pointed surgical instrument consisting of a pointed stylet inside a cannula, used to create pneumoperitoneum and establish access ports during minimally invasive surgery. In acute care surgery, trocars are essential for laparoscopic procedures, allowing insertion of cameras and instruments while maintaining insufflation. Different sizes (5mm, 12mm, 15mm) accommodate various instruments, and placement requires careful attention to anatomical landmarks to avoid vascular and bowel injury. Modern trocars may feature safety shields, optical tips, or bladeless designs to reduce complications. Proper documentation includes trocar size, location, and any complications during insertion.
Usage
Usage note: Specify size and insertion technique. Distinguish from cannula (the tube portion).
In Context
- "A 12mm umbilical trocar was placed using the Hasson open technique." — Operative report
- "Additional 5mm trocars were inserted under direct visualization." — Laparoscopic procedure note