Fig. 3From: Negative pressure irrigation and endoscopic necrosectomy through man-made sinus tract in infected necrotizing pancreatitis: a technical reporta Samples of “drainage system” (pig-tail catheter and double catheterization cannula within the same necrosis cavity for continuous irrigation); b A patient with multiple drainage catheters and double catheterization cannulas, namely, multiple “drainage systems”. The black arrows indicate pig-tail catheters and the white arrows indicate double catheterization cannulasBack to article page