Pigtail Drainage Catheter or called PTCD Set(Percutaneous Transhepatic Cholangial Drainage), PCN set(Percutaneous Nephrostomy), the catheter is made of polyurethane material, and catheter body is radio-opaque, can be visualized by X-ray, with hydrophilic coating for easy insertion. It is widely used in nephrostomy, abscess, and other multipurpose drainage, such as urinomas,ascites,hematomas,seromas,bilomas,pleuracentesis, locally medicine delivery and so on.