Types of Trocars

Trocars are either disposable or reusable and are available in various sizes (2, 5, 10, 12, and 15 mm). The obturator tip may be bladed or blunt; bladed trocars are available with or without (usually reusable trocars) a safety shield. The larger (10, 12, 15 mm) trocars have a valve and reducer system at the proximal end to allow instruments of various sizes to be passed without causing an air leak. The blunt-tip trocars may be associated with a lower incidence of injury to abdominal wall vessels and intraperitoneal structures, and are the preferred trocars at the author's institute. Longer trocars are also available for use in the morbidly obese population.

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