Percutaneous cannula-over-needle placement facilitates controlled, minimally invasive catheter introduction. For emergency drainage of nephrostomies and abscesses. Soft, flexible, kink resistant, radiopaque polyurethane catheter. Side holes positioned within catheter pigtail for effective drainage. Locking string system to secure pigtail/catheter in place. Includes cannula, direct puncture needle, pigtail catheter, collection line and 600cc collection bag.