trocar
Pronunciation: troh-kar
A surgical instrument consisting of a sharp pointed rod and cannula used to create port sites for laparoscopic bariatric surgery.
Full Definition
A trocar is an essential instrument in laparoscopic bariatric surgery, consisting of a sharp obturator within a hollow cannula that creates access ports for the insertion of laparoscopic instruments and cameras. Typical bariatric procedures require 4-6 trocars of varying sizes (5-15mm diameter) strategically placed across the abdomen. The trocar technique has evolved to include bladeless trocars, optical trocars for safer initial entry, and specialized trocars for specific instruments. Proper trocar placement is crucial for optimal surgical visualization and instrument triangulation, directly impacting operative efficiency and patient safety.
Usage
Usage note: Specify trocar size in millimeters when documenting surgical technique.
In Context
- "A 12mm trocar was placed at the umbilicus for camera insertion during laparoscopic sleeve gastrectomy." — Operative report
- "Trocar site hernias are a potential long-term complication of laparoscopic bariatric surgery." — Complication review