triangulation
Optimal positioning of laparoscopic instruments and camera to create ideal angles for tissue manipulation and visualization.
Full Definition
Triangulation in minimally invasive surgery refers to the strategic placement of trocars and instruments to create optimal working angles between the camera and operative instruments. Proper triangulation typically involves positioning the camera centrally with working instruments placed 60-90 degrees apart, allowing the surgeon to manipulate tissue effectively while maintaining clear visualization. Poor triangulation can result in awkward instrument angles, reduced dexterity, and increased risk of injury to surrounding structures.
Usage
Usage note: Refers specifically to instrument positioning, not mathematical triangulation.
In Context
- "Proper triangulation was established with the camera port at the umbilicus and working ports positioned laterally." — Operative report
- "The resident struggled with suturing due to poor triangulation of the instruments." — Training evaluation